An induction heating system for workpieces is provided with a flexible conductor channel coil apparatus for induction heating that can be adjustably opened or closed based on workpiece size. A power supply provides power with controllable voltage and/or current and frequency to the coil apparatus. A cooling fluid supply provides cooling fluid that circulates through the turns of the coil apparatus.
An induction heating system for workpieces is provided with a flexible conductor channel coil apparatus for induction heating that can be adjustably opened or closed based on workpiece size. A power supply provides power with controllable voltage and/or current and frequency to the coil apparatus. A cooling fluid supply provides cooling fluid that circulates through the turns of the coil apparatus.
F27D 11/06 - Induction heating, i.e. in which the material being heated, or its container or elements embodied therein, form the secondary of a transformer
F28D 7/16 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
H01F 29/12 - Variable transformers or inductances not covered by group with core, coil, winding, or shield movable to offset variation of voltage or phase shift, e.g. induction regulators having movable coil, winding, or part thereofVariable transformers or inductances not covered by group with core, coil, winding, or shield movable to offset variation of voltage or phase shift, e.g. induction regulators having movable shield
H05B 6/06 - Control, e.g. of temperature, of power
H05B 6/10 - Induction heating apparatus, other than furnaces, for specific applications
C21D 9/08 - Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articlesFurnaces therefor for tubular bodies or pipes
3.
ACTIVE RECTIFIER WITH CURRENT SOURCE INVERTER AND VOLTAGE SOURCE INVERTER POWER SYSTEMS FOR INDUCTION HEATING AND MELTING APPLICATIONS
An induction heating or melting system and a power conversion system thereof has an induction heating coil, an active rectifier having rectifier transistors, a DC link circuit coupled to an output of the active rectifier, an inverter having inverter transistors and an input coupled to the DC link circuit, a resonant tank circuit coupled to an output of the inverter and having the induction heating coil, a rectifier controller configured to control the rectifier transistors at a generally constant angle between triggering of the rectifier transistors relative to an AC input phase voltage using sinusoidal pulse width modulation (SPWM) with modulation index (MI) control to control a system output power, an inverter controller, and an input filter coupled to an input of the active rectifier.
H05B 6/08 - Control, e.g. of temperature, of power using compensating or balancing arrangements
H02M 7/219 - Conversion of AC power input into DC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only in a bridge configuration
H02M 7/48 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
H02M 7/5387 - Conversion of DC power input into AC power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
An intensive quenching (IQ) apparatus and method of quenching heated parts is provided. The IQ apparatus includes a chute for placing parts into a tank including liquid quenchant. The parts fall through the quenchant in the chute and are received by a conveyor belt. The parts are then transported on the conveyor through an inner channel of a conduit. An agitation rate of the quenchant in the inner channel is increased by an agitator.
B65G 49/04 - Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid the workpieces being immersed and withdrawn by movement in a vertical direction
Induction heating systems and methods, in which a DC magnetic field is applied to a magnetic workpiece while one or more induction heating coils are energized with AC current for an induction heating process. The heat treatment of the workpiece can be tailored to a achieve a desired thermal profile by controlling the workpiece permeability through the strength of the applied DC magnetic field in combination with control of the induction coil frequency, and the system can be adapted to different workpieces and target thermal profiles by controlling the relative permeability of the workpiece through DC magnetic field strength adjustment or setting and induction heating power, frequency and processing time.
An induction heating or melting system and a power conversion system thereof has an induction heating coil, an active rectifier having rectifier transistors, a DC link circuit coupled to an output of the active rectifier, an inverter having inverter transistors and an input coupled to the DC link circuit, a resonant tank circuit coupled to an output of the inverter and having the induction heating coil, a rectifier controller configured to control the rectifier transistors at a generally constant angle between triggering of the rectifier transistors relative to an AC input phase voltage using sinusoidal pulse width modulation (SPWM) with modulation index (MI) control to control a system output power, an inverter controller, and an input filter coupled to an input of the active rectifier.
H02M 5/42 - Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC by static converters
H02M 1/08 - Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
H02M 5/458 - Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC by static converters using discharge tubes or semiconductor devices to convert the intermediate DC into AC using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
An induction heating apparatus and method of use wherein the apparatus includes two poles, each pole comprising a pair of spaced apart coils wherein at least one of a spacing between the poles and the pole pitch is adjustable to control the power density transferred to a workpiece across its width. In some embodiments, movable flux shields are also adjusted to control power density transferred along edge portions of the workpiece.
An induction heating or melting system and a power conversion system thereof has an induction heating coil, an active rectifier having rectifier transistors, a DC link circuit coupled to an output of the active rectifier, an inverter having inverter transistors and an input coupled to the DC link circuit, a resonant tank circuit coupled to an output of the inverter and having the induction heating coil, a rectifier controller configured to control the rectifier transistors at a generally constant angle between triggering of the rectifier transistors relative to an AC input phase voltage using sinusoidal pulse width modulation (SPWM) with modulation index (MI) control to control a system output power, an inverter controller, and an input filter coupled to an input of the active rectifier.
An induction heating apparatus and method of use wherein the apparatus includes two poles, each pole comprising a pair of spaced apart coils wherein at least one of a spacing between the poles and the pole pitch is adjustable to control the power density transferred to a workpiece across its width. In some embodiments, movable flux shields are also adjusted to control power density transferred along edge portions of the workpiece.
An induction heating apparatus and method of use wherein the apparatus includes two poles, each pole comprising a pair of spaced apart coils wherein at least one of a spacing between the poles and the pole pitch is adjustable to control the power density transferred to a workpiece across its width. In some embodiments, movable flux shields are also adjusted to control power density transferred along edge portions of the workpiece.
An intensive quenching (IQ) apparatus and method of quenching heated parts is provided. The IQ apparatus includes a chute for placing parts into a tank including liquid quenchant. The parts fall through the quenchant in the chute and are received by a conveyor belt. The parts are then transported on the conveyor through an inner channel of a conduit. An agitation rate of the quenchant in the inner channel is increased by an agitator.
B65G 47/18 - Arrangements or applications of hoppers or chutes
B65G 49/04 - Conveying systems characterised by their application for specified purposes not otherwise provided for for conveying workpieces through baths of liquid the workpieces being immersed and withdrawn by movement in a vertical direction
Methods and controllers to operate a wind turbine system, including generating control signals to operate a boost converter and an inverter according to a setpoint, increasing the setpoint, sampling a feedback value after increasing the setpoint, further increasing the setpoint in response to the feedback value indicating that the output power delivered is increasing following an increase in the setpoint, decreasing the setpoint in response to the feedback value indicating that the output power is not increasing following the increase in the setpoint, or that the output power delivered is greater than a demanded output power value following a decrease in the setpoint, and increasing the setpoint in response to the feedback value indicating that the output power is less than the demanded output power value following the decrease in the setpoint.
H02M 5/40 - Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into DC
G06F 1/26 - Power supply means, e.g. regulation thereof
H02J 3/00 - Circuit arrangements for ac mains or ac distribution networks
H02M 7/00 - Conversion of AC power input into DC power outputConversion of DC power input into AC power output
Induction heating apparatus and methods are presented for pipe end heating using a solenoid coil to heat a controlled length of a pipe workpiece by adjusting the relative positions of the solenoid coil with a flux diverter positioned relative to the pipe end to divert flux from the coil to control inductive heating of the pipe workpiece end.
Induction heating apparatus and methods are disclosed for selective workpiece heating such as strip heating, in which DC windings around one or more laminations proximate to a workpiece edge are selectively energized using DC electrical power for controlled partial or full saturation of the one laminations to control edge overheating in a transverse flux induction heating system, in which certain implementations further employ a copper shield between the induction heating coil and the strip workpiece proximate the edge of the workpiece to control the edge heating effect.
Induction heating apparatus and methods are disclosed for selective workpiece heating such as strip heating, in which DC windings around one or more laminations proximate to a workpiece edge are selectively energized using DC electrical power for controlled partial or full saturation of the one laminations to control edge overheating in a transverse flux induction heating system, in which certain implementations further employ a copper shield between the induction heating coil and the strip workpiece proximate the edge of the workpiece to control the edge heating effect.
Electrical induction heating apparatus for the induction heating or melting of metal, and electronic parts thereof, namely, controllers, power supplies, inductors, converters, inverters, and transformers
Electrical induction heating apparatus for the induction heating or melting of metal, and electronic parts thereof, namely, controllers, power supplies, inductors, converters, inverters, and transformers
The present invention relates to an apparatus, system and method for heat treating metal parts that are stacked together and moved through an induction heating system and quench system. The present invention is specifically directed to an Induction Thermo Magnetic Processing (ITMP) apparatus, method and system which uses a magnetic field processing with induction high-frequency heat treatment to process metal components so as to inductively hardening materials.
09 - Scientific and electric apparatus and instruments
11 - Environmental control apparatus
Goods & Services
(1) Electronic induction melting furnaces and parts thereof; and solid state electronic power converters for induction heating and melting.
(2) Electrical induction heating apparatus for the induction heating or melting of metal, and electronic parts thereof, namely, electronic controllers, power supplies, converters, inverters, and transformers.
09 - Scientific and electric apparatus and instruments
11 - Environmental control apparatus
Goods & Services
(1) Electrical induction heating apparatus for the induction heating or melting of metal, and electronic parts thereof, namely, controllers, power supplies, converters, inverters, and transformers
(2) Electronic induction melting furnaces and parts thereof; and solid state electronic power converters for induction heating and melting.
09 - Scientific and electric apparatus and instruments
Goods & Services
Tube and rod bending machines and presses; tube and rod
fabricating machines; tube and rod end finishing machines;
tube and rod deburring machines. Electronically operated angle-of-bend selector used with
tube and rod bending machines and presses.
09 - Scientific and electric apparatus and instruments
Goods & Services
(1) Metal tube and rod bending machines and presses; metal tube and rod fabricating machines; metal tube and rod end finishing machines; metal tube and rod deburring machines; computer controls for the operation of machine tools, namely electronically operated angle-of-bend selector used with metal tube and rod bending machines and presses.
24.
Process and method for hot changing a VIM induction furnace
An apparatus, method and process directed to enabling a VIM induction furnace to be removed from a vacuum chamber while the induction furnace is still in a heated state without damaging the induction furnace. The induction furnace can include a power port that can be easily switched to an auxiliary cooling source to enable the induction furnace to be removed from the vacuum chamber while the induction furnace is still in a heated state.
H05B 6/06 - Control, e.g. of temperature, of power
F27D 9/00 - Cooling of furnaces or of charges therein
F27B 17/00 - Furnaces of a kind not covered by any of groups
F27D 11/06 - Induction heating, i.e. in which the material being heated, or its container or elements embodied therein, form the secondary of a transformer
F27B 14/06 - Crucible or pot furnacesTank furnaces heated electrically, e.g. induction crucible furnaces, with or without any other source of heat
25.
Crucible and dual frequency control method for semi-liquid metal processing
A semi-liquid metal processing apparatus and method are presented in which a semi-liquid metal and/or semi-solid metal is introduced into a crucible and his electromagnetically stirred at a first frequency while cooling, and thereafter sidewalls of a metal charge formed of the semi-liquid metal and/or semi-solid metal are partially melted prior to tilting the crucible for removal of the metal charge.
C22B 9/00 - General processes of refining or remelting of metalsApparatus for electroslag or arc remelting of metals
F27D 11/06 - Induction heating, i.e. in which the material being heated, or its container or elements embodied therein, form the secondary of a transformer
B22D 1/00 - Treatment of fused masses in the ladle or the supply runners before casting
F27B 14/06 - Crucible or pot furnacesTank furnaces heated electrically, e.g. induction crucible furnaces, with or without any other source of heat
F27B 14/20 - Arrangement of controlling, monitoring, alarm or like devices
09 - Scientific and electric apparatus and instruments
Goods & Services
tube and rod bending machines and presses; tube and rod fabricating machines; tube and rod end finishing machines; tube and rod deburring machines Computer controls for the operation of machine tools, namely, electronically operated angle-of-bend control selector used with tube and rod bending machines and presses
09 - Scientific and electric apparatus and instruments
Goods & Services
Computer controls for the operation of machine tools, namely, electronically operated angle-of-bend control selector used with tube and rod bending machines and presses
28.
Three-phase line reactor with skew yoke core design
A line reactor is presented having a skewed core structure with three horizontally non-coplanar vertical legs and top and bottom laminated, interleaved yoke structures with corresponding horizontally non-coplanar yoke ends.
An apparatus, method and process directed to enabling a VIM induction furnace to be removed from a vacuum chamber while the induction furnace is still in a heated state without damaging the induction furnace. The induction furnace can include a power port that can be easily switched to an auxiliary cooling source to enable the induction furnace to be removed from the vacuum chamber while the induction furnace is still in a heated state.
A semi-liquid metal processing and sensing device comprising a crucible that is at least partially encircled by at least one induction coil. The one or more induction coils can be water cooled. The one or more induction coils can be designed to generate a variable power and/or variable frequency magnetic field which can be modulated to control the cooling of a molten metal charge in the crucible from the liquidus temperature to a selected heat content, resistivity and/or viscosity. The magnetic field can be designed to induce toroidal agitation of the metal charge in the crucible. The semi-liquid condition is sensed and can be actively controlled by the induction power supply via real time or non-real time analysis of electrical feedback signals that are obtained from the induction coil.
Improved induction heating methods are presented for induction hardening undercut fillets of crankshafts or other workpiece recesses or undercuts in which an active turn is energized to induce current in a passive turn translated toward a workpiece undercut for heating the undercut.
Electrical induction heating apparatus for the induction heating or melting of metal, and electronic parts thereof, namely, controllers, power supplies, converters, inverters, and transformers
33.
Semi-liquid metal processing and sensing device and method of using same
A semi-liquid metal processing and sensing device comprising a crucible that is at least partially encircled by at least one induction coil. The one or more induction coils can be water cooled. The one or more induction coils can be designed to generate a variable power and/or variable frequency magnetic field which can be modulated to control the cooling of a molten metal charge in the crucible from the liquidus temperature to a selected heat content, resistivity and/or viscosity. The magnetic field can be designed to induce toroidal agitation of the metal charge in the crucible. The semi-liquid condition is sensed and can be actively controlled by the induction power supply via real time or non-real time analysis of electrical feedback signals that are obtained from the induction coil.
An apparatus and method of manufacturing a crystal grower is disclosed. The crystal growing apparatus includes a receptacle constructed to receive a material selected to grow a crystal and an induction heater constructed to heat the material, with the induction heater comprising a Litz coil and a hose constructed to receive the Litz coil therein. The hose further comprises an inner liner formed of an electrically non-conductive material, a reinforcement layer surrounding the inner liner to provide structural reinforcement thereto, and an outer liner applied about the reinforcement layer to form an exterior of the hose.
A system and method for producing locally austempered ductile iron includes a computer program for closely controlling the heating and cooling of an iron part or workpiece. The process allows for the austempering of a relatively low cost iron workpiece to produce significantly higher quality end products. The locally austempered regions may be formed to a substantial controlled depth.
An induction furnace includes a melting induction coil for inductively heating a pair of susceptors for melting particulate material falling freely in a free fall zone between the susceptors. A feeder having a rotatable hollow shaft with fingers extending therefrom breaks up the material, which falls onto a vibrating dispersion plate and then into the free fall zone. A preheating induction coil inductively heats a susceptor which radiates heat to particulate material moving over the dispersion plate. An adjustable gap between the feeder and dispersion plate controls material flow. A funnel collects falling molten material and directs it through a nozzle into a mold. Induction coils control melting within the funnel. One induction coil heats the nozzle and may be controlled to allow the nozzle to cool sufficiently to form a solid plug in the nozzle whereby molten material pools above the plug.
Improved induction coil apparatus and methods are presented for induction hardening undercut fillets of crankshafts or other workpiece recesses in which an active turn is energized for heating a journal area in the workpiece recess and one or more passive turns are translated toward undercut fillets once the coil assembly is moved toward the recess with coupling portions of the passive and active turns coupling energy from the active turn to the passive turn(s) for heating the undercut fillets.
Systems and methods are presented for producing shot from molten material, in which two or more sprays of inert gas, such as an upper or primary spray followed by one or more lower or secondary sprays, are used to break apart large molten droplets into shot as the molten material is dropped from a crucible orifice. The upper or primary gas feed in one application acts to initially break the stream or droplets into initial droplets of a lesser size or to flatten the droplets, with the second spray then breaking up the intermediate droplets into yet smaller shot particles to be cooled and collected.
B22F 9/08 - Making metallic powder or suspensions thereofApparatus or devices specially adapted therefor using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
An induction heating apparatus that can operate at current frequencies of greater than 60 Hz and at least 1 kW. The induction heating apparatus includes a high frequency power supply, a superconductive induction coil, and a fluid cooling system. A fluid cooling system is designed to cause a cooling fluid to flow at least partially about and/or through the superconductive induction coil.
H01L 39/02 - Devices using superconductivity or hyperconductivity; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof - Details
H01B 12/00 - Superconductive or hyperconductive conductors, cables or transmission lines
An apparatus to feed elongated metallic workpieces to a manufacturing process including a storage hopper configured to hold a plurality of workpieces that are randomly oriented and a movement device having a workpiece support that is automatically engageable with a workpiece.
B65G 47/14 - Devices for feeding articles or materials to conveyors for feeding articles from disorderly-arranged article piles or from loose assemblages of articles arranging or orientating the articles by mechanical or pneumatic means during feeding
B25J 15/06 - Gripping heads with vacuum or magnetic holding means
42.
SEMI-LIQUID METAL PROCESSING AND SENSING DEVICE AND METHOD OF USING SAME
A semi-liquid metal processing and sensing de\ice comprising a crucible that is at least partially encircled by at least one induction coil. The one or more induction coils can be water cooled. The one or more induction coils can be designed to generate a \ariable power and or variable frequency magnetic field which can be modulated to control the cooling of a molten metal charge in the crucible from the liquidus temperature to a selected heat content, resistivity and/ or viscosity. The magnetic field can be designed to induce toroidal agitation of the metal charge in the crucible. The semi-liquid condition is sensed and can be actively controlled by the induction power supply via real time or non-real time analysis of electrical feedback signals that are obtained from the induction coil.
A semi-liquid metal processing and sensing de\ice comprising a crucible that is at least partially encircled by at least one induction coil. The one or more induction coils can be water cooled. The one or more induction coils can be designed to generate a \ariable power and or variable frequency magnetic field which can be modulated to control the cooling of a molten metal charge in the crucible from the liquidus temperature to a selected heat content, resistivity and/ or viscosity. The magnetic field can be designed to induce toroidal agitation of the metal charge in the crucible. The semi-liquid condition is sensed and can be actively controlled by the induction power supply via real time or non-real time analysis of electrical feedback signals that are obtained from the induction coil.
An apparatus and method for hardening the concentric main bearing surfaces and orbital pin bearing surfaces of a crankshaft for an internal combustion engine. The apparatus includes an inductor that is connected to a high frequency power source with a power controller to cause the power source to direct a given power to the inductor at given rotational heating positions of the crankshaft. A master controller creates output signals to control the power controller. The apparatus and method includes a first multi-surface hardening station with inductors for all of the main bearing surfaces, a second multi-surface hardening station with inductors for some of the orbital pins and a third multi-surface hardening station with inductors for the remaining orbital pins. Total indicator run out (TIR) is measured after the first station to adjust the heating process in the third station to produce a straight crankshaft.
Systems and methods are presented for automated induction hardening of crankshaft bearings while controlling the crankshaft TIR, in which one or more first bearings are hardened by induction heating and quenching, followed by measurement of the crankshaft TIR. The measured TIR is then evaluated and one or more second bearings are hardened using a second induction heating power profile and a second quench flow profile, at least one of which is selectively adjusted according to the measured crankshaft TIR. In this manner, the hardening of the second bearing(s) can counteract any bending or warpage caused by the first hardening process to control the resulting final TIR of the crankshaft.
A coreless induction furnace includes a crucible for holding a material to be heated. An induction coil is wound about the crucible. A frame supporting the crucible and the induction coil is wound about the crucible. An induction coil loading arrangement includes at least one clamping assembly for providing a leveraged axial force to an upper side of the induction coil.
A pusher plate for use in a pusher furnace includes a shaped guidance groove in its lower surface which preferably has a bow-tie shape with a narrower central section and wider ends proximate the leading and trailing faces of the plate. The groove receives therein a guide rail which is disposed intermediate a pair of slide rails upon which the plate slides. The shape of the groove allows the plate a small amount of lateral rotation to minimize jamming during travel. Adjacent plates pivot upon contact with each other to automatically adjust their orientation during travel through the furnace. The leading and trailing faces of the plates thus contact one another over a larger surface area to reduce damage to the plates by reducing the pressure therebetween.
A compression system for an inductively heated pusher furnace controls movement of susceptors during thermal contraction thereof. The system includes a plurality of furnace sections each having a susceptor wherein each susceptor abuts an adjacent susceptor and wherein the susceptors include first and last susceptors. A compression plate abuts the first susceptor to apply force thereon toward the last susceptor to keep the susceptors in abutment with each other during contraction of the susceptors during cooling thereof. An actuator for moving the compression plate is preferably automatically controlled by a computerized control system. The susceptors together form a tunnel through which pusher plates travel and have overlapping joints which seal against the escape of gasses and allow for a degree of susceptor contraction without forming a gap therebetween even in the absence of compression of the susceptors.
A pusher furnace includes a pusher assembly having first and second coordinated pushers for pushing load supports with loads to be heated thereon to provide continuous downstream movement of the load supports through a furnace section. A removal assembly includes a first removal mechanism which removes the load supports from the furnace section and a second removal mechanism which removes the loads from the first removal mechanism to facilitate the continuous downstream movement. The first removal mechanism preferably includes a parallelogram-type four-bar linkage for lifting the load supports and lowering them onto the second removal mechanism. Entry and exit plenums are connected to respective ends of the furnace section to provide a controlled atmosphere within the furnace section. The pusher and removal assemblies are timed with opening and closing of various gates of the plenums to maintain the controlled atmosphere.
A pusher furnace includes furnace sections having respective susceptors, a slide rail extending through the furnace sections for sliding pusher plates thereon and an alignment assembly for aligning the susceptors and slide rails of adjacent furnace sections. A support structure spaces the susceptors from insulation therebelow to protect the insulation from degradation from contact with the susceptors. The susceptors are slidably mounted on the support structure to accommodate thermal expansion and shrinkage of the susceptor. The upstream end of the slide rails have beveled upper edges to help prevent the pusher plates from catching thereon. The upstream ends are also laterally tapered to reduce the degree of force encountered should a pusher plate catch thereon. Adjacent insulation members have expansion joints filled with a refractory felt. The susceptors slidably and sealingly engage exhaust ports to allow for thermal expansion and shrinkage of the susceptor without damaging the exhaust port.
F27B 9/02 - Furnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity of multiple-track typeFurnaces through which the charge is moved mechanically, e.g. of tunnel type Similar furnaces in which the charge moves by gravity of multiple-chamber typeCombinations of furnaces
51.
INDUCTION COIL HAVING INTERNAL AND EXTERNAL FARADIC RINGS
An induction furnace includes a pair of induction coils with a pair of faraday rings disposed between the induction coils to substantially prevent mutual inductance between the first and second induction coils. The induction coils preferably have a different size circumference and may be coplanar. The prevention of mutual inductance provided by the faraday rings is particularly useful for a pusher furnace in which adjacent furnace sections are heated to different and rather specific temperatures.
A compression system for an inductively heated pusher furnace controls movement of susceptors during thermal contraction thereof. The system includes a plurality of furnace sections each having a susceptor wherein each susceptor abuts an adjacent susceptor and wherein the susceptors include first and last susceptors. A compression plate abuts the first susceptor to apply force thereon toward the last susceptor to keep the susceptors in abutment with each other during contraction of the susceptors during cooling thereof. An actuator for moving the compression plate is preferably automatically controlled by a computerized control system. The susceptors together form a tunnel through which pusher plates travel and have overlapping joints which seal against the escape of gasses and allow for a degree of susceptor contraction without forming a gap therebetween even in the absence of compression of the susceptors.
H05B 6/10 - Induction heating apparatus, other than furnaces, for specific applications
F27B 9/14 - 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 path of the charge during treatmentFurnaces 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
53.
Guidance system for pusher plate for use in pusher furnaces
A pusher plate for use in a pusher furnace includes a shaped guidance groove in its lower surface which preferably has a bow-tie shape with a narrower central section and wider ends proximate the leading and trailing faces of the plate. The groove receives therein a guide rail which is disposed intermediate a pair of slide rails upon which the plate slides. The shape of the groove allows the plate a small amount of lateral rotation to minimize jamming during travel. Adjacent plates pivot upon contact with each other to automatically adjust their orientation during travel through the furnace. The leading and trailing faces of the plates thus contact one another over a larger surface area to reduce damage to the plates by reducing the pressure therebetween.
A pusher furnace includes furnace sections having respective susceptors, a slide rail extending through the furnace sections for sliding pusher plates thereon and an alignment assembly for aligning the susceptors and slide rails of adjacent furnace sections. A support structure spaces the susceptors from insulation therebelow to protect the insulation from degradation from contact with the susceptors. The susceptors are slidably mounted on the support structure to accommodate thermal expansion and shrinkage of the susceptor. The upstream end of the slide rails have beveled upper edges to help prevent the pusher plates from catching thereon. The upstream ends are also laterally tapered to reduce the degree of force encountered should a pusher plate catch thereon. Adjacent insulation members have expansion joints filled with a refractory felt. The susceptors slidably and sealingly engage exhaust ports to allow for thermal expansion and shrinkage of the susceptor without damaging the exhaust port.
F27B 9/18 - 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 path of the charge during treatmentFurnaces 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 circular or arcuate path under the action of scrapers or pushers
A casting system includes a filtration assembly including a filter vessel housing spaced filters pre-heated to a temperature approximating a pouring temperature of molten material to be filtered to prevent breakage of the filter due to thermal shock from contact with the molten material. Preferably, an induction coil is used to inductively heat a susceptor adjacent the filter vessel or inductively heat filters which themselves serve as susceptors. Typically, the filter vessel is disposed below a pouring vessel and above a mold, pour cup and any sprue system used and is heated independently from the same. The filters are heated during pouring to facilitate flow of the molten material therethrough whereby very fine filters may be used. Spacing of the filters enhances flow control and allows a head of molten material to form whereby dross floats to the top of the head to prevent its entry into the mold.
A continuous- or intermittent-melt induction furnace useful for heating and/or melting semi-conductor or other materials includes an induction coil, a susceptor switchable between open and closed electric circuit modes, and a crucible. The susceptor is inductively or resistively heated in the closed circuit mode and transfers heat to material in the melting cavity to make it susceptible to inductive heating. The susceptor is then switched to the open circuit mode and the susceptible material is directly inductively heated to melt remaining solid material. A cone-shaped flow guide in the melting cavity improves molten material flow to improve the ability to draw small-particle material into the melt and increase crucible life due to improved heat uniformity. A trap passage communicating with the melting cavity and an exit opening in the crucible allows the flow of material through the exit opening to be controlled by pressure differentials on either side of the trap passage.
42 - Scientific, technological and industrial services, research and design
Goods & Services
Induction heating devices, inductors, inductor heating elements for induction heating devices, and heat treatment systems using induction heating devices. Design of induction heaters, inductors, power supplies and systems using the same.
42 - Scientific, technological and industrial services, research and design
Goods & Services
Induction heating devices, inductors, inductor heating elements for induction heating devices, and heat treatment systems using induction heating devices. Design of induction heaters, inductors, power supplies and systems using the same.
Machines and machine tools; motors and engines (except for land vehicles); machine coupling and transmission components (except for land vehicles); agricultural implements other than hand-operated; incubators for eggs, including machines for machinery tubular metal and plastic products, namely, cut off, splitting, phasing, chamfering, reaming, turning, profiling, and threading machines; machines for couplings and protectors on threaded pipes, drifting machines and parts thereof; mechanical transfer tables for moving tubular and bar products, namely, walking beams, kicker plates, and powered v rolls; machines for machining couplings, namely, cut off, finishing, boring, and tapping machines, and special machinery, namely, contour boring, ordnance finishing, threading, facing, boring, drilling and tapping machines; tooling for all of the foregoing and other machines, namely, tool heads, carbide cutting tools and thread chasers, die heads and chucks.
Electrical induction heating apparatus for heating or melting metal workpieces, namely, induction heaters for heating or melting metal workpieces and inductors for heating or melting metal workpieces in an induction heater
An induction heat treating process with a remote sensor for monitoring the duration of energization of an induction heating coil each time the induction heating coil is consecutively cycled. An identifying tag is preferably attached to, embedded within the induction heating, coil or within, the surrounding area of the induction coil and transmits a signal to a remote counting sensor that .is preferably triggered by and responds to the change in voltage generated as the coil is energized. Alternative means of measuring a cycle may be implemented. The output data from the sensor provides useful information for determining the lifespan of an induction heating coil. Predicting the lifespan of a coil optimizes production by anticipating failure and. replacement of a coil during a predetermined down time, limiting on-site inventory, and revolutionizing, the billing cycle based on a per cycle cost while decreasing overall production costs and improving inductor coil quality.
An apparatus and method of manufacturing a crystal grower is disclosed. The crystal grower includes a reservoir constructed to receive a crystal growing material therein. An induction heater having a coil of woven strands of wire is disposed proximate the reservoir and heats the crystal growing material.
C30B 15/02 - Single-crystal growth by pulling from a melt, e.g. Czochralski method adding crystallising materials or reactants forming it in situ to the melt
09 - Scientific and electric apparatus and instruments
11 - Environmental control apparatus
Goods & Services
electrical power supplies for induction furnaces channel induction furnaces; electric induction heating and melting furnaces; electrical furnaces for casting metals; and induction heating equipment, namely heating coils and crucibles
Machines for machinery tubular metal and plastic products, namely, cut off, splitting, phasing, chamfering, reaming, turning, profiling, and threading machines; machines for couplings and protectors on threaded pipes, drifting machines and parts thereof; mechanical transfer tables for moving tubular and bar products, namely, walking beams, kicker plates, and powered v rolls; machines for machining couplings, namely, cut off, finishing, boring, and tapping machines, and special machinery, namely, contour boring, ordnance finishing, threading, facing, boring, drilling, and tapping machines; tooling for all of the foregoing and other machines, namely, tool heads, carbide cutting tools and thread chasers, die heads and chucks
Heating and melting equipment, namely, furnaces for use in induction heating and melting for casting metals, heat treating metals, mass heating metals, induction reheating metals, induction strip heating metals, induction heating and melting for holding furnaces, induction tube and bar heating, induction coreless furnaces, induction channel furnaces; induction heating furnaces for forgings
09 - Scientific and electric apparatus and instruments
11 - Environmental control apparatus
Goods & Services
(1) Electrical power supplies for induction furnaces; channel induction furnaces; electrical induction heating and melting furnaces; electrical furnaces for casting metals; and induction heating equipment, namely, heating coils and crucibles.
09 - Scientific and electric apparatus and instruments
11 - Environmental control apparatus
Goods & Services
(1) Electrical power supplies for induction furnaces; channel induction furnaces; electric induction heating and melting furnaces; electrical furnaces for casting metals; and induction heating equipment, namely, heating coils and crucibles.
09 - Scientific and electric apparatus and instruments
11 - Environmental control apparatus
Goods & Services
electrical power supplies for induction furnaces channel induction furnaces; electrical induction heating and melting furnaces; electrical furnaces for casting metals; and induction heating equipment, namely, heating coils and crucibles
09 - Scientific and electric apparatus and instruments
11 - Environmental control apparatus
Goods & Services
Electrical power supplies for induction furnaces. Channel induction furnaces; electric induction heating and melting furnaces; electrical furnaces for casting metals; induction heating equipment, namely heating coils and crucibles.
09 - Scientific and electric apparatus and instruments
11 - Environmental control apparatus
16 - Paper, cardboard and goods made from these materials
Goods & Services
Training material, namely prerecorded video tapes. Electrical induction heat treating equipment for inductively heating the surface zones of articles to hardening temperature and thereafter cooling these zones. Training material, namely notebooks.
09 - Scientific and electric apparatus and instruments
11 - Environmental control apparatus
Goods & Services
Electrical power supplies for induction furnaces. Channel induction furnaces; electric induction heating and melting furnaces; electrical furnaces for casting metais; induction heating equipment, namely heating coils and crucibles.
09 - Scientific and electric apparatus and instruments
11 - Environmental control apparatus
Goods & Services
electronic power supplies, converters, controllers and transformers; corona treaters for applying an electrostatic charge to plastic films, papers, layflat tubing and metal foils and components thereof; namely, corona treater stations, electrodes, and di-electrically covered rollers; and electronic cap sealers for providing tamper-proof seals on plastic or glass containers electronic induction melting furnaces and parts thereof; and solid state electronic power converters for induction heating and melting
MACHINES TO COMMINUTE TURNINGS AND CHIPS OF METAL RESULTING FROM MACHINING, AND MACHINES TO REMOVE THE CUTTING OILS THEREFROM BY CENTRIFUGE IN PREPARATION OF THE METAL TURNINGS AND CHIPS FOR REMELTING
09 - Scientific and electric apparatus and instruments
Goods & Services
Power Supplies for Industrial Installations in High Frequency Induction Heating Applications for the Forging and Processing of Materials, Structural Parts Therefor
09 - Scientific and electric apparatus and instruments
11 - Environmental control apparatus
Goods & Services
[ELECTRONIC POWER SUPPLIES, CONVERTERS, CONTROLLERS AND TRANSFORMERS; CORONA TREATERS FOR APPLYING AN ELECTROSTATIC CHARGE TO PLASTIC FILMS, PAPERS, LAYFLAT TUBING AND METAL FOILS AND COMPONENTS THEREOF-NAMELY, CORONA TREATER STATIONS, ELECTRODES, AND DIELECTRICALLY COVERED ROLLERS; AND ELECTRONIC CAP SEALERS FOR PROVIDING TAMPERPROOF SEALS ON PLASTIC OR GLASS CONTAINERS] ELECTRONIC INDUCTION MELTING FURNACES AND PARTS THEREOF; AND SOLID STATE ELECTRONIC POWER CONVERTERS FOR INDUCTION HEATING AND MELTING
06 - Common metals and ores; objects made of metal
17 - Rubber and plastic; packing and insulating materials
19 - Non-metallic building materials
09 - Scientific and electric apparatus and instruments
11 - Environmental control apparatus
Goods & Services
[HEAT REFRACTORY MATERIALS FOR MAKING FURNACE LININGS] INDUCTION HEATING TRANSFORMERS AND ACCESSORIES THEREFOR ELECTRIC INDUCTION HEATING AND MELTING FURNACES, ELECTRIC FURNACES FOR CASTING METALS, INDUCTION HEATING EQUIPMENT-NAMELY, HEATING COILS AND CRUCIBLES
09 - Scientific and electric apparatus and instruments
Goods & Services
INDUCTIVE AND DIELECTRIC HEATING APPARATUS IN WHICH CURRENT FOR HARDENING, ANNEALING, BRAZING, HEATING FOR FORGING, MELTING AND DRYING ARTICLES, AND PARTS OF ARTICLES IS DERIVED FROM ELECTRONIC TUBES, THE TUBES COMPRISING A PART OF THE APPARATUS
09 - Scientific and electric apparatus and instruments
11 - Environmental control apparatus
16 - Paper, cardboard and goods made from these materials
Goods & Services
(1) Electrical induction heat treating equipment for inductively heating the surface zones of articles to hardening temperature and thereafter cooling these zones.
09 - Scientific and electric apparatus and instruments
Goods & Services
Electrical Induction Heat Treating Equipment for Inductively Heating the Surface Zones of Articles to Hardening Temperature and Thereafter Cooling These Zones
