Abstract

Device for inspecting an inner wall surface of a metal tube having a linear drive, an elongated probe holder and an eddy current probe. The eddy current probe is mounted on probe holder and the probe holder is operatively connected to linear drive in such manner that probe holder is movable together with eddy current probe in an axial feed direction through tube to be tested when device is in operation.

IPC Classes  ?

• G01N 27/90 - Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws using eddy currents
• G01N 27/9013 - Arrangements for scanning
• F16L 55/28 - Constructional aspects

Abstract

The aim of the invention is to provide a tube which has a length of over 10 m, is suitable for high-pressure applications at an internal pressure of 2 bar or more, and does not have the disadvantages of tubes that have been produced by means of conventional drawing rolling or cold pilger rolling methods. This aim is achieved by providing a tube in which the wall thickness is equal to or greater than the internal diameter, the axial length is 12 m or more, the tensile strength is Rm 850 N/mm2 or more and the average roughness Ra of the internal wall surface is 0.8 µm or less. The invention also relates to a method for producing such a tube, in which method a blank is formed into a tubular intermediate product in a first forming step after the cold forming process, the tubular intermediate product obtained in this way is annealed, and the annealed tubular intermediate product is formed into a tube in a second forming step after the cold forming process.

IPC Classes  ?

• B21C 1/18 - Metal drawing by machines or apparatus in which the drawing action is effected by means other than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, rods or tubes from stock of limited length
• B21B 21/00 - Pilgrim-step tube-rolling
• B21C 1/22 - Metal drawing by machines or apparatus in which the drawing action is effected by means other than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, rods or tubes specially adapted for making tubular articles
• C21D 9/14 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes wear-resistant or pressure-resistant pipes
• C21D 1/26 - Methods of annealing
• C21D 6/00 - Heat treatment of ferrous alloys
• C21D 7/10 - Modifying the physical properties of iron or steel by deformation by cold working of the whole cross-section, e.g. of concrete reinforcing bars
• C21D 8/10 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies

Abstract

According to the invention, a transport system for a tube, a wire or a metal sheet is provided, comprising: - a transport platform; - a bundle loader, the bundle loader being designed in such a way that a plurality of straight portions of the tube, of the wire or of the metal sheet can be received in the bundle loader; - an isolating device, the isolating device being designed and arranged in such a way that, by means of the isolating device, an isolated portion from the plurality of portions of the tube, of the wire or of the metal sheet can be removed from the bundle loader; - a drive, the drive being designed and arranged in such a way that the isolated portion can be conveyed in a conveying direction by means of the drive; and - a cutting device, the cutting device being designed in such a way that the isolated portion can be cut to a selected length by means of the cutting device. The isolating device, the drive and the cutting device are arranged on the transport platform in such a way that, by means of the drive, the isolated portion can be removed from the isolating device and fed to the cutting device in an automated manner.

IPC Classes  ?

• B21D 43/00 - Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
• B21D 43/28 - Associations of cutting devices therewith
• B23Q 7/04 - Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting by means of grippers
• B23Q 7/14 - Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting co-ordinated in production lines
• B23D 36/00 - Control arrangements specially adapted for machines for shearing or similar cutting, or for sawing, stock while the latter is travelling otherwise than in the direction of the cut

Abstract

An electric heater to heat a flow of a fluid having a jacket block comprising a plurality of longitudinal bores to allow the through-flow of a gas phase medium. An elongate heating element extends through each of the bores and is positionally stabilised within the jacket block via a plurality of stabilising fins that project radially inward to at least partially surround the elongate heating element within each of the bores.

IPC Classes  ?

• F24H 1/14 - Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
• F24H 3/02 - Air heaters with forced circulation
• F24H 3/04 - Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
• F24H 9/00 - FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL - Details
• F24H 9/06 - Arrangement of mountings or supports
• H05B 3/40 - Heating elements having the shape of rods or tubes
• F28F 1/02 - Tubular elements of cross-section which is non-circular
• F28F 1/14 - Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally
• F28F 1/40 - Tubular elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element
• F28F 7/02 - Blocks traversed by passages for heat-exchange media

Abstract

The present invention relates to a pipe structure for high-pressure applications. According to the invention, in order to provide a pipe structure which overcomes at least one of the disadvantages of the pipes known from the prior art, the pipe structure has: a metal inner pipe, the inner pipe having an inner face and an outer face; at least one strand which surrounds the outer face of the inner pipe and has a plurality of yarns, at least one of the yarns containing carbon fibres; and a protective pipe surrounding the strand and the inner pipe.

IPC Classes  ?

• F16L 9/147 - Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and plastics with or without reinforcement
• F16L 9/18 - Double-walled pipes; Multi-channel pipes or pipe assemblies
• F16L 57/02 - Protection of pipes or objects of similar shape against external or internal damage or wear against cracking or buckling

Abstract

The invention relates to a method for producing a rod-shaped element. The aim of the invention is to provide a method by means of which a rod-shaped element can be produced which overcomes at least one of the disadvantages of the rod-shaped elements known from the prior art. This aim is achieved, according to the invention, in that the method comprises the steps of providing a tube made of a metal, wherein the tube has a longitudinal direction; providing at least one strand having a plurality of threads, wherein at least one of the threads has carbon fibers; introducing the at least one strand into the tube such that the at least one strand extends in the longitudinal direction in the tube; and cold forming the tube, together with the at least one strand, by means of a forming tool, such that an outside diameter of the tube before the cold forming is greater than the outside diameter of the tube after the cold forming.

IPC Classes  ?

• B21C 37/04 - Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of rods or wire
• B21C 37/08 - Making tubes with welded or soldered seams
• B21F 19/00 - Metallic coating of wire

Abstract

According to one aspect of the present disclosure, the aim is to create a transport system which makes it possible to transport a pipe of any length and with the required quality to the location of the use of the pipe. The invention therefore relates to a transport system (1, 1', 1") for a pipe (18) with a transport platform (3), a receptacle (14, 14') for the pipe (18), wherein the receptacle (14, 14') is configured in such a manner that the pipe (18) may be received coiled on the receptacle (14, 14'), a drive (20), wherein the drive (20) is configured in such a manner that the pipe (18) may be conveyed by the drive (20) in a transport direction, and a straightening device (24), wherein the straightening device (24) is configured in such a manner that the pipe (18) can be straightened with the straightening device (24), wherein the receptacle (14, 14'), the drive (20) and the straightening device (24) are arranged on the transport platform (3) in such a manner that the pipe (18) may be drawn automatically from the receptacle (14, 14') and fed to the straightening device (24) by the drive (20).

IPC Classes  ?

• B65H 49/38 - Skips, cages, racks, or containers, adapted solely for the transport or storage of bobbins, cops, or the like

Abstract

According to one aspect of the present disclosure, the aim is to create a transport system which makes it possible to transport a wire or sheet of any length and with the required quality to the location of the use of the wire or the sheet. The invention therefore relates to a transport system (1, 1', 1") for a wire (18) or a plate with a transport platform (3), a receptacle (14, 14') for the wire or the sheet, wherein the receptacle (14, 14') is configured in such a manner that the wire (18) or the sheet may be received coiled on the receptacle (14, 14'), a drive (20), wherein the drive (20) is configured in such a manner that the wire (18) or the sheet may be conveyed by the drive (20) in a transport direction, and a straightening device (24), wherein the straightening device (24) is configured in such a manner that the wire (18) or the sheet can be straightened with the straightening device (24), wherein the receptacle (14, 14'), the drive (20) and the straightening device (24) are arranged on the transport platform (3) in such a manner that the wire (18) or the sheet may be drawn automatically from the receptacle (14, 14') and fed to the straightening device (24) by the drive (20).

IPC Classes  ?

• B65H 49/38 - Skips, cages, racks, or containers, adapted solely for the transport or storage of bobbins, cops, or the like

Abstract

The present disclosure relates to a system having an inner structure, wherein the inner structure comprises at least one inner tube made of stainless steel and at least one sensor device with at least one sensor to measure at least one condition of the system. Under an aspect of the present disclosure a system of this type is suggested, wherein the inner structure is coated with at least one layer of at least one plastic material.

IPC Classes  ?

• G01D 11/30 - Supports specially adapted for an instrument; Supports specially adapted for a set of instruments
• G01L 19/14 - Housings
• G01M 5/00 - Investigating the elasticity of structures, e.g. deflection of bridges or aircraft wings
• G01K 1/14 - Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
• F16L 9/02 - Rigid pipes of metal
• H01B 7/04 - Flexible cables, conductors, or cords, e.g. trailing cables
• B21C 37/06 - Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
• E21B 47/01 - Devices for supporting measuring instruments on drill bits, pipes, rods or wirelines; Protecting measuring instruments in boreholes against heat, shock, pressure or the like

Abstract

An electric heater to heat a flow of a fluid having a jacket block comprising a plurality of longitudinal bores to allow the through-flow of a gas phase medium. An elongate heating element extends through each of the bores and is positionally stabilised relative to the jacket block via at least one support member, optionally in the form or an elongate rod to inhibit undesirable independent axial and/or lateral movement of the heating element relative to the jacket block.

IPC Classes  ?

• F24H 3/00 - Air heaters
• H05B 3/42 - Heating elements having the shape of rods or tubes non-flexible
• F24H 1/14 - Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form

Abstract

An electric heater to heat a flow of a fluid having a jacket block comprising a plurality of longitudinal bores to allow the through-flow of a gas phase medium. An elongate heating element extends through each of the bores that together with the jacket block define a heating assembly to heat the gas. The heating assembly is positionally stabilised within the electric heater via at least one brace configured to inhibit undesirable independent axial and/or lateral movement of the heating assembly within the electric heater.

IPC Classes  ?

• F24H 1/10 - Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
• F24H 3/00 - Air heaters
• F24H 9/18 - Arrangement or mounting of grates or heating means
• H05B 3/42 - Heating elements having the shape of rods or tubes non-flexible

Abstract

Pilger rolling mill for working a hollow into a tube has a first roll stand mounted linearly moveable in a direction of motion. Translational motion of the roll stand causes rotational motion of the drive gear due to the cogging of the drive gear with the gear rack and, hence, also rotational motion of the roller arranged on the shaft of the drive gear and rotational motion of the other one of the two rollers in the opposite direction. Roll stand is connected with a crank drive and rotational motion of a motor drive is transformed into an oscillating translational motion of the roll stand by a connecting rod. Gear rack holder allows adjustment of the pilger rolling mill with respect to tube diameters of finished rolled tubes by arranging the first roll stand exchangeable by a second roll stand with a second dimension being different from the first dimension.

IPC Classes  ?

• B21B 21/00 - Pilgrim-step tube-rolling
• B21B 31/02 - Rolling stand frames; Roll mountings
• B21B 31/07 - Adaptation of roll bearings

Abstract

<<<<<<<<<<<<<<< 0.75, which is balanced by Fe and normally occurring impurities.

IPC Classes  ?

• F17C 13/00 - VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES - Details of vessels or of the filling or discharging of vessels
• F17C 5/02 - Methods or apparatus for filling pressure vessels with liquefied, solidified, or compressed gases for filling with liquefied gases

Abstract

The present disclosure relates to a tube made of an austenitic stainless steel comprising, in weight %, C ≤ 0.080, 8.00 ≤ Mn ≤ 10.00, Si ≤ 1.00, P ≤ 0.030, S ≤ 0.030, 19.00 ≤ Cr ≤ 21.50, 5.50 ≤ Ni ≤ 7.50, 0.15 ≤ N ≤ 0.40, Mo ≤ 0.75, Cu ≤ 0.75, which is balanced by Fe and normally occurring impurities. So far tubes made of an austenitic stainless steel comprising this composition of ingredients are welded. A major problem of welded tubes is the risk for cracking, where the weld zone is the preferential location for cracking. This is especially a problem for applications under extreme conditions like in the aircraft or aerospace industry. It is therefore an aspect of the present disclosure to provide a tube made of an austenitic stainless steel comprising the foresaid components which at least overcomes one of the foresaid problems. Furthermore, it is an aspect of the disclosure to provide tubes that have less weight as tube known from the state of the art but increases the security and lead to a higher standard in the aircraft and aerospace industry. At least one of the above aspects is solved by a foresaid tube, wherein that the tube is a seamless tube.

IPC Classes  ?

• C21D 9/08 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
• B21B 21/00 - Pilgrim-step tube-rolling
• C22C 38/00 - Ferrous alloys, e.g. steel alloys
• C22C 38/42 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
• C22C 38/44 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
• C22C 38/58 - Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese
• C21D 8/10 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies

Abstract

The present disclosure relates to a diesel distributor fuel rail for a diesel combustion engine with a diesel distributor conduit and a plurality of injector cups in fluid connection with a diesel distributor conduit. In order to make combustion engines having a smaller cylinder capacity more efficient, it is necessary to enhance fuel pressure in the distributor fuel rail. On the other hand the footprint available for the distributor fuel rail has not changed. According to the present disclosure it is thus suggested to provide at least a section of the distributor conduit by a tube made of an austenitic stainless steel comprising, in weight%, C ≤ 0.080, 8.00 ≤ Mn ≤ 10.00, Si ≤ 1.00, P ≤ 0.030, S ≤ 0.030, 19.00 ≤ Cr ≤ 21.50, 5.50 ≤ Ni ≤ 7.50, 0.15 ≤ N ≤ 0.40, Mo ≤ 0.75, Cu ≤ 0.75, balance Fe and normally occurring impurities.

IPC Classes  ?

• F02M 55/02 - Conduits between injection pumps and injectors

Abstract

The present invention relates to a method for forming a hollow 26 of a ferritic FeCrAI alloy into a tube 2. While tubes made of powder metallurgical, dispersion hardened, ferritic FeCrAI alloys are commercially available, hollows made of FeCrAI alloys so far can hardly be formed into tubes of small dimensions. The major reason for the problems in forming hollows of a ferritic FeCrAI alloy into a finished product is that FeCrAI alloys are brittle. It is therefore an aspect of the present invention to provide a tube 2 made of a ferritic FeCrAI alloy having arbitrary small dimensions. Furthermore, it is an aspect of the present invention to provide a machine 1 and a method for forming a tubular hollow 26 into a finished tube 2 of a ferritic FeCrAI alloy. At least one of the above aspects is addressed by a method for forming a hollow into a tube 2 comprising the steps providing the hollow 26 of a ferritic FeCrAI alloy, heating the hollow 26 to a temperature in a range from 90°C to 150°C, and forming the heated hollow 26 by pilger milling or drawing into the tube.

IPC Classes  ?

• B21B 3/00 - Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences
• B21B 21/00 - Pilgrim-step tube-rolling
• B21C 1/24 - Metal drawing by machines or apparatus in which the drawing action is effected by means other than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, rods or tubes specially adapted for making tubular articles by means of mandrels
• B21C 9/00 - Cooling, heating or lubricating drawing material
• C21D 8/10 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
• C21D 9/08 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes

Abstract

The invention relates to a cold pilger rolling mill (7') for cold-forming a bloom (11) to form a cold-hardened pipe (25), comprising a roll stand (1) having rollers (2) rotatably mounted thereon. In this respect, an object of the invention is to permit the rolling of long blooms that is as efficient as possible, without reducing the quality of the pipes to be produced. According to the invention, in order to achieve this object, the cold pilger rolling mill is to be configured in such a way that the cold pilger rolling mill has an unwinding device (26), wherein the unwinding device is configured and arranged in front of the front mandrel thrust block in the feed direction of the bloom such that a spindle, which can be rotated about an axis perpendicular to the feed direction of the bloom and with the bloom wound on same, can be received thereon, and during an operation of the cold pilger rolling mill, the bloom can be unwound and supplied between the chuck of the front mandrel thrust block and the mandrel bar to the feed clamping slide and the roll stand.

IPC Classes  ?

• B21B 21/00 - Pilgrim-step tube-rolling

Abstract

The invention relates to a cold pilger rolling mill for cold-forming a bloom to form a cold-hardened pipe. In addition to a roll stand (2) which can move back and forth in a direction parallel to a longitudinal axis of the bloom (11) and which has rollers (2, 3) rotatably mounted thereon, a roller mandrel (4) retained by a mandrel bar (8) and at least one feed clamping slide (5) for gradually feeding the bloom in a direction towards the roller mandrel, on which a feed chuck that can be opened and closed in the radial direction is secured for receiving the bloom, the cold pilger rolling mill according to the invention has at least one mandrel thrust block (15) having a chuck for retaining the mandrel bar. A front mandrel thrust block is arranged in front of the feed clamping slide in the feed direction of the bloom, such that the mandrel bar can be held in place by the chuck of the front mandrel thrust block during an operation of the cold pilger rolling mill. The chuck of the front mandrel thrust block can be opened in the radial direction, such that a bloom can be guided through between the chuck and the mandrel bar. The cold pilger rolling mill according to the invention is characterised in that the front mandrel thrust block is at a distance of at least 30 m from the feed chuck, measured with the feed clamping slide at the rear turning point thereof. The distance is also measured between the rear (in the feed direction of the bloom) end of the chuck of the front mandrel thrust block and the front (in the feed direction of the bloom) end of the feed chuck of the feed clamping slide at the rear turning point thereof. Figure 2

IPC Classes  ?

• B21B 21/04 - Pilgrim-step feeding mechanisms
• B21B 25/02 - Guides, supports, or abutments for mandrels, e.g. carriages; Adjusting devices for mandrels

Abstract

The present invention relates to a pilger rolling mill for shaping a bloom into a tube, comprising a first roll stand (1) mounted to be linearly moveable in a movement direction. Two rollers (2, 3) for shaping the bloom into the tube are rotatably mounted on shafts on the roll stand (1) in such a way that one of the rollers (2, 3) is arranged on a shaft with a drive gear (6). The drive gear (6) engages in a stationary rack (5) which is secured on a rack holder (4) so that a translational movement of the roll stand (1) due to the engagement of the drive gear (6) in the rack (5) causes a rotational movement of the drive gear (6) and thus also of the roller (2, 3) arranged on the shaft of the drive gear (6), and also of the other of the two rollers (2, 3) in the opposite direction. The roll stand (1) is connected to a crank drive so that a rotational movement of a drive motor is converted via a push rod into an oscillating translational movement of the roll stand (1) during operation of the pilger rolling mill. In contrast, the rack holder (4) according to the invention enables the provision of a pilger rolling mill that can be adjusted in a simple and cost-effective way to the tube diameter to be produced in the finish-rolled tubes, so that the production of tubes with different diameters is possible in the same pilger rolling mill. For this purpose, the rack (4) is configured in such a way that the first roll stand (1) is interchangeable with a second roll stand with a second dimension that differs from the first dimension. By adjusting the roll stand to the required tube diameter of the finish-rolled tubes, said tubes have dimensions of improved accuracy and precision after their production process.

IPC Classes  ?

• B21B 21/00 - Pilgrim-step tube-rolling

Abstract

The present disclosure relates to a method for manufacturing a tube of metal. Sensors are attached to tubes, which register and signal a damage of the tube. It is detrimental that protection of the sensors at these tubes against environmental influences is complex. In contrast, it is an object of the present disclosure to provide a method for manufacturing a tube, in which the signal line can be protectively mounted. To solve this object, a method for manufacturing a tube of metal is suggested with an outer tube and an inner tube, wherein a groove is drawn in an inner surface of the outer tube or in an outer surface of the inner tube and subsequently the inner tube and the outer tube are drawn together through a drawing die, wherein the inner dimension of the outer tube is reduced such that after the drawing the outer tube is force-fitted onto the inner tube.

IPC Classes  ?

• B21C 37/15 - Making tubes of special shape; Making the fittings
• B21C 37/20 - Making helical or similar guides in or on tubes without removing material, e.g. by drawing same over mandrels, by pushing same through dies
• F16L 9/02 - Rigid pipes of metal
• G01M 3/18 - Investigating fluid tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for valves

Abstract

The invention relates to a sensor for a high-pressure line and to a method for producing same. The aim of the invention is to provide a sensor for a high-pressure line, said sensor being suitable for detecting parameters or properties of a fluid conducted in a high-pressure line, wherein the sensor maintains the high pressure of the fluid. According to the invention, this is achieved by a sensor for a high-pressure line, comprising an outer tube which is made of metal and comprises an outer surface, an inner surface, an outer diameter, and an inner diameter, and an inner tube which is made of metal and comprises an outer surface, an inner surface, an outer diameter, and an inner diameter, said inner tube extending concentrically in the outer tube such that the inner tube and the outer tube together form a tube. The total wall thickness of the tube, measured as half of the difference between the outer diameter of the outer tube and the inner diameter of the inner tube, equals or is greater than the inner diameter of the inner tube. The sensor also comprises at least one groove which extends in the outer surface of the outer tube or in the outer surface of the inner tube in a longitudinal direction of the tube, at least one signal line arranged in the groove, and at least one receiver which is connected to the signal line, said receiver being arranged at least in the groove or in at least one recess which is introduced at least into the outer surface of the inner tube or into the inner surface of the outer tube in addition to the at least one groove. The outer tube sits on the inner tube in a force-fitting manner.

IPC Classes  ?

• G01M 5/00 - Investigating the elasticity of structures, e.g. deflection of bridges or aircraft wings
• F17D 5/02 - Preventing, monitoring, or locating loss
• F17D 5/06 - Preventing, monitoring, or locating loss using electric or acoustic means
• B21C 37/15 - Making tubes of special shape; Making the fittings

Abstract

The invention relates to a method for producing a high-pressure pipe (1). An inner pipe (2) made of metal and an outer pipe (3) made of metal are drawn together through a first drawing die (4a). The outer diameter (D2) of the inner pipe is smaller than the inner diameter (D3) of the outer pipe. By drawing the outer pipe and the inner pipe, which extends in the outer pipe, together through the first drawing die, a very stable force-fitting connection is produced between the inner pipe and the outer pipe. As a result, a pipe is produced with a large wall thickness, by means of which the produced pipe is very robust and pressure-resistant while having a very high quality outer lateral surface and in particular a very high quality inner lateral surface by virtue of the cold forming process. These two properties allow a sufficiently high protection of the pipe to be produced against bursting when pressures in excess of 12,000 bar are applied to the pipe. Accordingly, the method according to the invention is particularly suitable for producing a pipe with a clearly improved dynamic pressure resistance against high pressures by combining a large wall thickness of the pipe to be produced with a high quality inner lateral surface of the pipe to be produced.

IPC Classes  ?

• B21C 37/15 - Making tubes of special shape; Making the fittings
• B21C 1/22 - Metal drawing by machines or apparatus in which the drawing action is effected by means other than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, rods or tubes specially adapted for making tubular articles

Abstract

The invention relates to a device for dripping a flowable product, comprising an outer drum which is arranged on a core in a rotatable manner and which is provided with multiple through-openings on the circumference of the outer drum. The core is equipped with a feed channel which runs in the longitudinal direction of the core and a distributing device which rests against the inner circumference of the outer drum. At least one supply channel is provided between the feed channel and the distributing device when seen over the length of the feed channel, and a blocking element is provided for adjusting a free cross-section of the at least one supply channel.

IPC Classes  ?

• B01J 2/20 - Processes or devices for granulating materials, in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by expressing the material, e.g. through sieves and fragmenting the extruded length

Abstract

A double belt press having a first, lower circulating plastic belt and a second, upper circulating plastic belt. The plastic belts have a first, low flexural strength, and a product gap is formed between facing strands of the plastic belts for forming a plate-like product. A first circulating lower steel belt and a second circulating upper steel belt are provided and have a second flexural strength which is high in comparison to the flexural strength of the plastic belts. A forming section is formed between the facing strands of the steel belts, which forms part of the product gap. The first, lower steel belt runs parallel and bears against a rear face of the first plastic belt in the forming section during operation, and the second upper steel belt runs parallel and bears against a rear face of the second plastic belt in the forming section during operation.

IPC Classes  ?

• B29C 43/48 - Endless belts
• B27N 3/24 - Moulding or pressing characterised by using continuously acting presses having endless belts or chains moved within the compression zone
• B29C 70/50 - Shaping or impregnating by compression for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
• B30B 5/06 - Presses characterised by the use of pressing means other than those mentioned in groups and wherein the pressing means is in the form of an endless band co-operating with another endless band
• B30B 15/34 - Heating or cooling presses or parts thereof
• B29C 43/22 - Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length
• B29C 43/52 - Heating or cooling
• B29K 101/12 - Thermoplastic materials
• B29L 7/00 - Flat articles, e.g. films or sheets

Abstract

2 onto the outer tube wall in order to remove a contaminant from the outer tube wall.

IPC Classes  ?

• B21B 45/02 - Devices for surface treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
• B08B 7/00 - Cleaning by methods not provided for in a single other subclass or a single group in this subclass
• B21B 21/00 - Pilgrim-step tube-rolling
• B21B 38/00 - Methods or devices for measuring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product

Abstract

The invention relates to a method for producing a strand from stainless steel by cold-forming a bloom into the cold-hardened strand and subsequently annealing the strand. The aim of the invention is to provide a corresponding method for producing a strand from stainless steel, said method allowing stainless steel strands to be produced which have both a high tensile strength as well as a high degree of elongation. According to the invention, this is achieved in that the strand is heated to a temperature ranging from 400 °C to 460 °C while the strand is being annealed, and the cold-hardened strand is surrounded by a protective gas atmosphere during the heating process.

IPC Classes  ?

• C21D 8/06 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
• C21D 8/10 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
• C21D 9/08 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
• C21D 9/14 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes wear-resistant or pressure-resistant pipes
• C21D 9/52 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for strips
• C21D 1/25 - Hardening, combined with annealing between 300 °C and 600 °C, i.e. heat refining ("Vergüten")

Abstract

2 onto the inner tube wall to remove the contaminant therefrom.

IPC Classes  ?

• B21B 45/02 - Devices for surface treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
• B65H 19/30 - Lifting, transporting, or removing the web roll; Inserting core
• B21B 21/00 - Pilgrim-step tube-rolling
• B21B 37/74 - Temperature control, e.g. by cooling or heating the rolls or the product

Abstract

The invention relates to a device (10) and to a method for pastillating a flowable product, in particular a melt, comprising a circulating belt (18) and a drop former (14), wherein the drop former deposits product drops (20) on an upper run of the belt, wherein the product drops solidify into pastilles on the upper run of the belt in the course of the transport and wherein means (32, 38) for wetting the belt by means of a liquid parting agent are provided upstream of the region in which the product drops are deposited on the belt, wherein the parting agent prevents or reduces the adhesion of the product drops to the belt, and wherein a proportional metering pump (54) is provided in order to continuously mix the parting agent from at least two liquid components during the operation of the device.

IPC Classes  ?

• B01J 2/26 - Processes or devices for granulating materials, in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic on endless conveyor belts
• B29B 9/10 - Making granules by moulding the material, i.e. treating it in the molten state

Abstract

The invention relates to a device for cooling a fluid that solidifies in a predefined temperature range, in particular a melt, comprising a cooling chamber for a cooling medium to be accommodated therein or to flow therethrough, at least one conduit for the fluid, which is at least partly arranged inside the cooling chamber, and at least one heating device arranged inside the conduit.

IPC Classes  ?

• C01B 17/02 - Preparation of sulfur; Purification

Abstract

The invention relates to a method for producing l-menthol in solid form, characterised by the following steps: providing a menthol melt; supplying the melt to a drop former having a rotating, perforated outer drum and a fixed row of nozzles on the inner side of the outer drum; depositing menthol melt, generated by the drop former, on a circulating cooling band; hardening the menthol melt to form l-menthol pastilles during transportation on the cooling band; and removing the pastilles in the region of a diverting drum for the cooling band.

IPC Classes  ?

• B01J 2/26 - Processes or devices for granulating materials, in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic on endless conveyor belts
• C07C 29/76 - Separation; Purification; Stabilisation; Use of additives by physical treatment
• C07C 35/12 - Menthol

Abstract

The present invention relates to a process for producing a high-grade steel tube comprising the steps of providing a tubular blank of an austenitic high-grade steel, wherein the high-grade steel comprises carbon in a proportion of no more than 0.02% by weight, manganese in a proportion of no more than 1.0% by weight, phosphorus in a proportion of no more than 0.03% by weight, sulphur in a proportion of no more than 0.015% by weight, silicon in a proportion of no more than 0.8% by weight, nickel in a proportion of 17.5% by weight to 18.5% by weight, chromium in a proportion of 19.5% by weight to 20.5% by weight, molybdenum in a proportion of 6.0% by weight to 6.5% by weight, nitrogen in a proportion of 0.18% by weight to 0.25% by weight and also copper in a proportion of 0.5% by weight to 1.0% by weight, with a remainder of iron and unavoidable impurities, and cold-forming the blank into a tube. In order to provide a corresponding process for producing a tube from an austenitic high-grade steel that allows the high-grade steel tube to be stranded in a later processing step and at the same time allows the tube to be transported to a location at which this processing step is performed, it is proposed according to the invention that the process additionally comprises the steps of coiling the tube and annealing the coiled tube after the cold-forming at a temperature in a range from 1100°C to 1200°C.

IPC Classes  ?

• C21D 8/10 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of tubular bodies
• C21D 9/08 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
• B21C 47/02 - Winding-up or coiling
• B23K 31/02 - Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by any single one of main groups relating to soldering or welding

Abstract

Heating element for heating gases to high temperatures, comprising at least one tube (1) arranged for the flow of gas to be heated and an electrical heating wire in the tube, which is designed for the transfer of heat to the gas flowing past the heating wire. A process heater and a corresponding heating element are provided, which permit a generation of gas temperatures up to 1000 °C or above and nevertheless have a relatively long life, which usually is at least 10 times as long as the life span of conventional heating coils when generating gas temperatures up to 1000 °C. According to the invention, it is proposed that the heating wire is formed as a heating rod (2) extending along the tube axis, whose maximum clear distance to the inner wall of the tube does not exceed a value of 10 mm over at least 80% of the circumference and/or at least 80% of the overlapping length of the tube and the heating rod.

IPC Classes  ?

• H05B 3/48 - Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
• F24H 3/00 - Air heaters

Abstract

The present invention relates to a roll straightening machine (1) for straightening an elongated string member, having at least one first straightening roll (24, 25), which is rotatably mounted around a first rotation axis (43) and motor-driven, and at least one second straightening roll (29), which is rotatably mounted around a second rotation axis (45) and motor-driven, wherein the first and second rotation axis (43, 44) are oblique with respect to a longitudinal axis of an elongated string member to be received in the roll straightening machine (1), and wherein the first and the second rotation axis (43, 44) are oblique with respect to one another. In order to provide a roll straightening machine that can be set up flexibly for different requirement profiles, it is proposed according to the invention that the first rotation axis (43) is mounted on a first holding means (17), the second rotation axis (44) is mounted on a second holding means (17), and wherein the first and the second holding means (17) are supported by a frame (2) in a removable manner which is adapted to receive a variable number of holding means (17) with straightening rolls (24, 25, 29).

IPC Classes  ?

• B21D 3/04 - Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts by rollers arranged on axes skew to the path of the work

Abstract

The present invention relates to an annealing furnace (1) for annealing a strand (2) of steel comprising a first heating apparatus (9) for heating the strand (2) during the operation of the annealing furnace (1), comprising a transport device (4, 5, 6, 7) for the strand (2), which is designed to advance the strand (2) in a direction of transport (3) through the annealing furnace (1) during the operation of the annealing furnace (1). The annealing furnace (1) further comprises a first cooling device (13) for cooling the outer surface (17) of the strand (2) with a gas guide (16) in the direction of transport (3) behind the first heater (9), wherein the gas guide (16) is arranged in such a manner that a gas flows along the outer surface (17) of the strand (2) during the operation of the annealing furnace (1) for cooling the strand (2).

IPC Classes  ?

• C21D 9/08 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
• C21D 9/573 - Continuous furnaces for strip or wire with cooling

Abstract

The invention relates to a dryer for flat materials, in particular panels, films or foils, in which a porous, gas-permeable metal plate is provided for arrangement at a distance from the flat material to be dried, means for conveying a gaseous fluid through the metal plate being provided, and the metal plate being made of a metal foam.

IPC Classes  ?

• F26B 13/10 - Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
• F26B 21/00 - Arrangements for supplying or controlling air or gases for drying solid materials or objects

Abstract

The invention relates to an apparatus for treating sheet-like material, in particular panels, film or foil, wherein the apparatus has at least one bar-like or rod-like strip arranged transversely to the longitudinal direction of the sheet-like material, wherein the sheet-like material is moved longitudinally past the strip, wherein the strip consists of porous, fluid-permeable metal foam, at least over a part of its outer surface which is directed towards the sheet-like material, and wherein means are provided for feeding a treatment fluid through the metal foam in the direction of the sheet-like material.

IPC Classes  ?

• F26B 13/10 - Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
• F26B 21/00 - Arrangements for supplying or controlling air or gases for drying solid materials or objects

Abstract

A cold pilger rolling mill with a pair of rolls (2, 3) which are rotatably attached to a roll stand (1), with a crank drive (10) on a driveshaft, which is rotatably mounted around a rotation axis (18), with a counterweight (9) attached to the crank drive (10) at a radial distance from the rotation axis (18), and with a push rod (6) with a first (16) and a second end (17), wherein the first end (16) of the push rod (6) is rotatably attached on the crank drive (10) wherein, during the operation of the mill, a rotation of the crank drive (10) is converted into a translation movement of the roll stand (1) between a first (U1) and a second reversal position (U2). Wherein the radial distance of the first end (16) of the push rod (6) from the rotation axis (18) is adjustable, so that the distance between the two reversal positions (U1, U2) of the translation movement of the roll stand (1) is adjustable.

IPC Classes  ?

• B21B 21/00 - Pilgrim-step tube-rolling

Abstract

A cold pilger rolling mill for forming a tube shell (11) to a tube (50) with a pair of rolls (2, 3) that are rotatably attached to a roll stand (1) and with a roll mandrel (4) as a tool, a feed clamping carriage (5) for receiving the tube shell (11) and with a drive (6) for the feed clamping carriage (5) that is arranged in such a manner that it moves the feed clamping carriage (5) in such a manner during the operation of the cold pilger rolling mill that the tube shell (11) moves step-by-step in the direction of the tool (2, 3, 4), wherein the cold pilger rolling mill comprises a control (12) and a sensor (16) for detecting a measure for a force exerted during the operation of the cold pilger rolling mill by the tool (2, 3, 4) onto the tube shell (11), and wherein the control (12) is connected to the drive and the sensor (16), and wherein the control (12) is arranged in such a manner that it regulates during the operation of the cold pilger rolling mill the step length per advance step with which the drive (6) moves the feed clamping carriage (5) to the tool (2, 3, 4) as a function of the measure for the force, which measure is detected by the sensor (16).

IPC Classes  ?

• B21B 21/04 - Pilgrim-step feeding mechanisms
• B21B 37/78 - Control of tube rolling

Abstract

A furnace muffle for an annealing furnace with a base body which is set up so that it delimits a volume to be heated, comprising at least one actuator which is connected to the base body in such a manner that the actuator, during the operation of the furnace muffle, can exert a force on the base body, at least one sensor which is arranged and set up so that it detects a force exerted by the base body during the heating or cooling and/or a change in the length of the base body during the heating or cooling, and a control device connected to the actuator and the sensor, which is set up so that, during the operation of the furnace muffle, it controls the force exerted on the base body as a function of the force or change in length detected by the sensor.

IPC Classes  ?

• F27B 5/10 - Muffles
• F27B 5/18 - Arrangement of controlling, monitoring, alarm or like devices
• F27B 9/08 - Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity electrically heated heated through chamber walls
• F27D 21/04 - Arrangements of indicators or alarms

Abstract

The present invention relates to a conveyor furnace (6) with a muffle (51), which comprises an inlet opening (53) and an outlet opening (54), with a heating device (60) for heating a volume (50) delimited by the muffle (51), and with a closed conveyor belt (57), which is manufactured at least partially from metal, characterized in that the conveyor furnace comprises a heating device (60) which is arranged so that, during the operation of the conveyor furnace, the heating device (60) heats a section (64) of the conveyor belt (57) outside of the muffle (51).

IPC Classes  ?

• F27B 5/04 - Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated adapted for treating the charge in vacuum or special atmosphere
• F27B 9/20 - Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path
• F27B 9/24 - Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the means by which the charge is moved during treatment the charge moving in a substantially straight path being carried by a conveyor
• F27B 9/36 - Arrangements of heating devices

Abstract

The present invention relates to a method for producing a steel tube (1) comprising the manufacturing of a steel tube (1) with an inner tube wall (2), an outer tube wall (3), and a free tube cross section enclosed by the inner tube wall (2), wherein after the manufacturing, the steel tube (1) comprises at least one contaminant on the outer tube wall (3) and entailing, after the manufacturing of the steel tube (1), cleaning of the outer tube wall (3) by applying liquid or solid CO2 onto the outer tube wall (3) in order to remove a contaminant from the outer tube wall (3).

IPC Classes  ?

• B21B 21/00 - Pilgrim-step tube-rolling
• B21B 45/02 - Devices for surface treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning

Abstract

The present invention relates to a method for producing a steel tube (1) comprising the manufacturing of the steel tube (1) with an inner tube wall (2), an outer tube wall, and a free tube cross section (5) enclosed by the inner tube wall (2), wherein after the manufacturing, the steel tube (1) comprises at least one contaminant on the inner tube wall, and entailing, after the manufacturing of the steel tube, cleaning of the inner tube wall. According to the invention, the cleaning of the inner tube wall (2) occurs, with the steps consisting of introducing liquid or solid CO2 into the free tube cross section (5), and of applying the liquid or solid CO2 onto the inner tube wall (2) in order to remove the contaminant from the inner tube wall (2).

IPC Classes  ?

• B21B 45/02 - Devices for surface treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning

Abstract

The present invention relates to a pilger rolling mill with a roll stand 2 that can move linearly back and forth along a movement direction 3 and with a crank drive, whereby the crank drive comprises a crankshaft 4 that is rotatably supported about an axis of rotation 13 and that comprises a crank pin 6 at a radial distance from the axis of rotation 13, and comprises a connecting rod 5 with a first and a second end, whereby the first end of the connecting rod 5 is pivotably fastened to the crank pin 6, and whereby the second end of the connecting rod is pivotably fastened to the roll stand 2, so that during the operation of the pilger rolling mill a rotary movement of the crankshaft is converted into an oscillating movement of the roll stand along the movement direction, and with a compensation shaft 11 that is rotatably supported about an axis of rotation 14, whereby the compensation shaft comprises a distribution of mass that is not rotationally symmetrical relative to its axis of rotation and has a counter-mass 12, whereby the crankshaft and the compensation shaft are connected to one another by a transmission so that a rotation of the crankshaft leads to a rotation of the compensation shaft. The axis of rotation 13 of the crankshaft 4 and the axis of rotation 14 of the compensation shaft 11 are at a distance from each other in a direction vertical to the direction of movement of the roll stand.

IPC Classes  ?

• B21B 21/00 - Pilgrim-step tube-rolling

Abstract

The invention relates to a processing machine (1) for parting off a pipe (22) and for planing its end faces as well as to a method for parting off and planing a pipe (22). The processing machine having a first clamping device for a pipe (22) to be machined, a second clamping device for the pipe (22) to be machined, a tool holder (13) for receiving a parting off tool (14), and a tool holder (15) for receiving a planing tool (16), wherein the first and the second tool holders (13,15) can rotate driven by a motor about an axis of rotation (9), wherein at least the first or the second clamping device can be moved driven by a motor in a direction parallel to the axis of rotation (9) of the first and of the second tool holder (13,15), wherein at least the first tool holder (13) can be advanced driven by a motor in a direction perpendicular to the axis of rotation (9), and wherein the first and the second tool holder (13,15) are set up in such a manner that the tools (14,16) that can be received in the tool holders (13,15) can be made to engage between the first and the second clamping device with the pipe (22) to be machined.

IPC Classes  ?

• B23B 5/16 - Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor for bevelling, chamfering, or deburring the ends of bars or tubes

Abstract

The present invention relates to a processing machine (1) and to a method for planing an end surface (13) of a pipe (14). The known methods for machining the end surfaces of a pipe therefore prove to be disadvantageous since they make the required surface quality available only with great expense. The present invention therefore has the problem of making a processing machine and a method available that make it possible to process the end surface of a finished pipe with improved quality. To this end the invention suggests a processing machine (1) for planing an end surface (13) of a pipe (14) with a clamping device (2) for the pipe to be processed, with a tool holder (3) with a planing tool (4), whereby the tool holder (3) is driven by a motor and can rotate about an axis of rotation (6), whereby the clamping device (2) and the tool holder are driven by a motor and can move toward one another in a direction parallel to the axis of rotation (6) of the tool holder, and whereby the processing machine (1) comprises a cooling device that is arranged in such a manner that it cools the pipe (14) to be processed and/or the planing tool (4) with the aid of liquid and/or solid carbon dioxide during the operation of the device.

IPC Classes  ?

• B23P 25/00 - Auxiliary treatment of workpieces, before or during machining operations, to facilitate the action of the tool or the attainment of a desired final condition of the work, e.g. relief of internal stress
• B23B 5/16 - Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor for bevelling, chamfering, or deburring the ends of bars or tubes
• B23Q 11/10 - Arrangements for cooling or lubricating tools or work
• B23B 13/12 - Accessories, e.g. stops, grippers
• B23C 3/00 - Milling particular work; Special milling operations; Machines therefor
• B23B 1/00 - Methods for turning or working essentially requiring the use of turning-machines; Use of auxiliary equipment in connection with such methods

Abstract

Rolling trains for producing a tube, with a pilger rolling mill for reducing the diameter of a hollow blank to form a tube, are known from the prior art. In this case, the individual working steps of rolling in the pilger rolling mill and, for example, annealing in a furnace after the rolling are performed at separate times, and the finished rolled tubes are initially bundled together, stored as a bundle and annealed in a closed furnace at a much later time. This procedure, referred to as bundle production, means that the production of a tube, from the reducing in the pilger rolling mill to the packaging, takes about two weeks, while the actual processing operations during these two weeks take only about two hours. Against this background, the object of the present invention is to provide a rolling train that operates continuously. To achieve this object, a pilger rolling train for producing a tube is proposed, with a pilger rolling mill for reducing the diameter of a hollow blank to form the tube, a first buffer for a number of tubes, the first buffer having a device for bundling a number of tubes together in a bundle, an annealing furnace for simultaneously annealing a number of tubes, a second buffer for a number of tubes, the second buffer for the tubes having a device for individually separating the number of tubes from a bundle, and a straightening machine for straightening the individually separated tubes one after the other, wherein the devices are arranged in the aforementioned sequence in the direction of flow of the tube and wherein an automated transporting device for the tube is respectively provided between the pilger rolling mill, the first buffer, the annealing furnace, the second buffer and the straightening machine.

IPC Classes  ?

• B21B 21/00 - Pilgrim-step tube-rolling
• B21B 39/00 - Arrangements for moving, supporting, or positioning work, or controlling its movement, combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills

Abstract

A double belt press having a first, lower circulating plastic belt and a second, upper circulating plastic belt. The plastic belts have a first, low flexural strength, and a product gap is formed between facing strands of the plastic belts for forming a plate-like product. A first circulating lower steel belt and a second circulating upper steel belt are provided and have a second flexural strength which is high in comparison to the flexural strength of the plastic belts. A forming section is formed between the facing strands of the steel belts, which forms part of the product gap. The first, lower steel belt runs parallel and bears against a rear face of the first plastic belt in the forming section during operation, and the second upper steel belt runs parallel and bears against a rear face of the second plastic belt in the forming section during operation.

IPC Classes  ?

• B29C 43/48 - Endless belts
• B27N 3/24 - Moulding or pressing characterised by using continuously acting presses having endless belts or chains moved within the compression zone
• B29C 70/50 - Shaping or impregnating by compression for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
• B30B 5/06 - Presses characterised by the use of pressing means other than those mentioned in groups and wherein the pressing means is in the form of an endless band co-operating with another endless band
• B30B 15/34 - Heating or cooling presses or parts thereof
• B29C 43/22 - Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of indefinite length

Abstract

The invention relates to a flat-plate solar collector comprising a base element and a transparent element, a working chamber being provided between the base element and the transparent element, that is at least partially filled with a working fluid that at least partially evaporates when the sun irradiates the flat-plate solar collector. The base element and transparent element are generally plate-shaped, the working chamber is provided with supporting elements that lie on the base element and on the transparent element, and the working chamber is also provided, at least in sections, with a capillary absorber material that absorbs the working fluid in the liquid state and distributes same in the working chamber by means of capillary action. The flat-plate solar collector according to the invention can be used in solar thermal systems according to the heat pipe principle, with combined heat and power generation.

IPC Classes  ?

• F24J 2/20 - the working fluid being conveyed between plates
• B30B 5/06 - Presses characterised by the use of pressing means other than those mentioned in groups and wherein the pressing means is in the form of an endless band co-operating with another endless band
• F24J 2/48 - characterised by the absorber material

Abstract

The invention relates to a method for extracting hydrocarbon compounds, especially crude oil, from underground oil sands deposits, comprising the following steps: at least two parallel boring sections are created in the oil sands deposits; at least some areas of the boring sections are filled with an explosive material; the explosive material is ignited in order to enlarge the boring sections; the combustible material is ignited in at least one of the boring sections in order to convert the hydrocarbon compounds in the oil sands deposit into a liquid and/or gaseous state; the hydrocarbon compounds in a liquid and/or gaseous state are collected; and auxiliary substances such as water and atmospheric oxygen are optionally introduced and removed for desired material conversions for the refining of hydrocarbons.

IPC Classes  ?

• E21B 43/248 - Combustion in situ in association with fracturing processes using explosives
• E21B 43/30 - Specific pattern of wells, e.g. optimizing the spacing of wells

Abstract

An apparatus is disclosed having a plurality of cold rolling installations which each have a roll stand movable along a linear path and having at least one roll which is fixed rotatably to the roll stand, a drive connected to the roll stand and having an electric motor so adapted that the roll stand is drivable in an oscillating movement along the linear path, and a feed clamping saddle for feeding a blank. The apparatus has an electric control having at least two control outputs, wherein each control output is connected to the electric motor of the drive of a roll stand and wherein the control is so adapted that in operation of the apparatus it so controls the electric motors that they drive at least two of the roll stands with an adjustable phase displacement between the oscillating movements of the roll stands.

IPC Classes  ?

• B21B 21/00 - Pilgrim-step tube-rolling
• B21B 37/78 - Control of tube rolling

Abstract

The state of the art discloses cold rolling mills comprising a roll stand, at least one roll rotatably mounted to the roll stand, a feed clamping saddle for feeding a blank, and a first drive for the feed clamping saddle. Those cold rolling mills have ball spindle drives with a high rate of wear as the drive for the feed clamping saddle. In comparison the object of the present invention is to provide a cold rolling mill whose drive for the feed clamping saddle involves no or only very slight wear and which in addition permits a slow movement of the feed clamping saddle. According to the invention that object is attained by a cold rolling mill which has a direct electromechanical linear drive for the feed clamping saddle.

IPC Classes  ?

• B21B 19/06 - Rolling hollow basic material
• B21B 21/04 - Pilgrim-step feeding mechanisms
• B21B 21/06 - Devices for revolving work between the steps
• B21B 21/02 - Rollers therefor
• B21B 37/78 - Control of tube rolling
• B21B 21/00 - Pilgrim-step tube-rolling
• F16D 63/00 - Brakes not otherwise provided for; Brakes combining more than one of the types of groups

Abstract

The invention relates to a double belt press having a first, lower circulating plastic belt (12, 74) and a second, upper circulating plastic belt (14, 75), wherein the plastic belts have a first, low flexural strength, wherein a product gap is formed between the facing strands of the plastic belts for forming a plate-like product, wherein a first circulating lower steel belt (36, 96) and a second circulating upper steel belt (38, 98) are provided, wherein the steel belts have a second flexural strength which is high in comparison to the flexural strength of the plastic belts, wherein a forming section (40, 100) is formed between the facing strands of the steel belts, wherein the forming section forms part of the product gap (24, 78), wherein the first, lower steel belt runs parallel and so as to bear against a rear face, which is averted from the product gap, of the first plastic belt in the forming section during operation, and wherein the second upper steel belt runs parallel and so as to bear against a rear face, which is averted from the product gap, of the second plastic belt in the forming section during operation.

IPC Classes  ?

• B29C 43/48 - Endless belts
• B27N 3/24 - Moulding or pressing characterised by using continuously acting presses having endless belts or chains moved within the compression zone
• B30B 5/06 - Presses characterised by the use of pressing means other than those mentioned in groups and wherein the pressing means is in the form of an endless band co-operating with another endless band

Abstract

The invention relates to a method for producing tablets containing ammonium nitrate, comprising the following steps: dripping a product melt containing ammonium nitrate by means of a drop former having a rotating, pierced drum and a jet strip contacting an inner face of the pierced drum, so that the product melt is pressed through the openings of the pierced drum, placing the product drops on a circulating cooling conveyor, solidifying the product drops by cooling during transport on the cooling conveyor, and removing the solidified product drops from the cooling conveyor.

IPC Classes  ?

• C05C 1/02 - Granulation; Pelletisation; Stabilisation; Colouring
• B01J 2/26 - Processes or devices for granulating materials, in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic on endless conveyor belts

Abstract

The invention relates to a pilger roller system having a roll stand (1), a flywheel (10) on a drive shaft which is rotatably mounted around a rotational axis (18) and a push rod (6) having a first (16) and a second end (17), wherein the first end (16) of the push rod (6) is fastened at a radial distance (7) from the rotational axis (18) on the flywheel (10) and wherein the second end (17) of the push rod (6) is fastened to the roll stand (1) so that a rotational movement of the flywheel (10) is converted to a translational movement of the roller frame (1) in operation of the system, having a drive motor (9) having a motor shaft wherein the motor shaft of the drive motor (9) and the drive shaft are connected to one another such that a rotational movement of the motor shaft leads to a rotational movement of the drive shaft and thus the drive motor (9) drives the flywheel (10). In order to provide a pilger roller system wherein the drive exhibits no or only very little wear for the roller frame and wherein precise movement of the roller frame at a high degree of repetition accuracy is enabled, according to the invention the drive motor (9) is a torque motor.

IPC Classes  ?

• B21B 21/00 - Pilgrim-step tube-rolling

Abstract

A winding device is known from the prior art with which a pipe produced in a roller system can be wound outside of the roller system. The pipe, which has already left the roller system, is then coiled or wound for transport in such a winding device. With respect to said prior art, the invention relates to a device and method enabling the finished, shaped pipe to be brought to a transportable state behind the roll stand while other sections of the pipe are in the loop stage or are just being shaped. The invention thus relates to a winding device (24) for a pipe (23) produced in a roller system having a bending unit (26) for curving the pipe, such that said pipe can be wound in a spiral shape around a first axis and a holding frame (25), wherein the bending device (24) is accommodated on the holding frame (25) in a pivoting manner around a second axis which is substantially perpendicular to the first axis. The invention also relates to a roller system having such a winding device and to a corresponding method.

IPC Classes  ?

• B21C 47/04 - Winding-up or coiling on or in reels or drums, without using a moving guide
• B21B 21/00 - Pilgrim-step tube-rolling

Abstract

Conventional cold-rolling mills comprise a mill stand (1), at least one roll (2, 3) which is rotatably mounted on the mill stand (1), a feed bracing slide (5) for feeding a blank and a first drive for the feed bracing slide. The cold-rolling mills have wear-prone ball screw drives as a drive for the feed bracing slide. The aim of the invention is therefore to provide a cold-rolling mill the feed bracing slide (5) drive of which is subject to no or only little wear and which allows a slow displacement of the feed bracing slide (5). The cold-rolling mill according to the invention has a direct electromechanical linear drive (6) for the feed bracing slide (5).

IPC Classes  ?

• B21B 21/04 - Pilgrim-step feeding mechanisms

Abstract

The aim of the invention is to design a chuck for a cold-pilgering mill, which allows a simple replacement of the chuck jaw carriers and thus a fast and inexpensive adaptation of the cold-pilgering mill to tubes of different diameters and wall thicknesses. According to the invention, a cold-pilgering mill is provided with a chuck (23) which comprises a substantially hollow-cylindrical adapter sleeve (24) having an inner cylindrical surface (31) and a cylinder axis (32), the inner cylindrical surface (31) having at least one clamping section the surface of which forms an angle with the cylinder axis (32) in the axial direction, and at least one first and one second chuck jaw carrier (21). The adapter sleeve (24) has a first slit-shaped opening at a first end so that a chuck jaw carrier (21) can be inserted in the adapter sleeve (24) through the opening in the radial direction. Every chuck jaw carrier (21) has an outer surface which extends substantially parallel to the cylinder axis (32) and a clamping surface (30) which is arranged opposite the outer surface and which extends substantially parallel to the cylinder axis. The outer surface (29) and the clamping surface (30) define a wedge and the adapter sleeve (24) can be displaced parallel to the cylinder axis (32) and relative to the chuck jaw carriers (21) such that the chuck section of the adapter sleeve (24) engages with the outer surface (29) of the chuck jaw carriers (21).

IPC Classes  ?

• B21B 21/04 - Pilgrim-step feeding mechanisms

Abstract

A device for expelling drops of a flowable product. The invention relates to a device for expelling drops of a flowable product, comprising a rotating outer drum and a feed channel for the product to be expelled extending into the outer drum, wherein the outer drum comprises passage openings on the circumference thereof, through which the product to be expelled runs from the feed channel and then exits in droplet shape. According to the invention, at least one outer circumference of the outer drum is provided with a coating that reduces wetting with the product to be tabletted compared to a base material of the outer drum. For example, the invention can be used for tabletting flowable products.

IPC Classes  ?

• B01J 2/20 - Processes or devices for granulating materials, in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by expressing the material, e.g. through sieves and fragmenting the extruded length
• B01J 2/04 - Processes or devices for granulating materials, in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by dividing the liquid material into drops, e.g. by spraying, and solidifying the drops in a gaseous medium
• B01J 2/26 - Processes or devices for granulating materials, in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic on endless conveyor belts

Abstract

1.1. The invention relates to a method for producing tables made of mixtures of a plurality of materials, and method for producing a sulfurous fertilizer. 2.1. The invention relates to a method for producing tablets made of mixtures of a plurality of materials, particularly urea mixtures, having the following steps: - producing a liquid melt of a first material, - adding at least one further material in solid or liquid form to the melt for producing a mixture, - output of drops of the mixture onto a steel belt by means of a drop former having a rotating, perforated outer drum, - solidification of the drops of the mixture on the steel belt into tablets, wherein the at least one additional material is mixed into the liquid melt in liquid form immediately before the drop former or into the liquid melt in solid form upstream of a two-stage heated grinding and mixing unit. 2.2. Use for producing fertilizer, for example.

IPC Classes  ?

• C05C 9/00 - Fertilisers containing urea or urea compounds
• C05C 3/00 - Fertilisers containing other salts of ammonia or ammonia itself, e.g. gas liquor
• C05D 9/00 - Other inorganic fertilisers
• C05D 9/02 - Other inorganic fertilisers containing trace elements
• C05G 5/00 - Fertilisers characterised by their form
• B01J 2/26 - Processes or devices for granulating materials, in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic on endless conveyor belts
• C01B 17/02 - Preparation of sulfur; Purification