The invention concerns a bottom block (10) for a continuous metal casting mold system (1) comprising a main body (30) comprising a main surface (31) adapted to receive the metal to be casted; and a peripheral ledge (50) defining a closed edge encircling the main surface (31), and protruding from the main surface (31) along a casting direction (Z), the peripheral ledge (50) comprising side walls (51); at least one side wall (51) comprising an enlarged portion (53), said enlarged portion (53) presenting an enlarged width (w53) counted perpendicular to the casting direction (Z) which is strictly superior to a largest width (w51) of the rest of said at least one side wall (51). The invention also concerns a system (1) for casting metal comprising such bottom block (10).
The invention concerns a process for producing a sheet or a plate or a blank, comprising the following successive steps: (a) casting a 6xxx alloy comprising, in wt. %: Si: 1.25-1.45; Fe: ≤0.30; Cu: ≤0.15; Mn: 0.01-0.15; Mg: 0.25-0.40; Cr: 0.03; Ni: ≤0.04; Zn: <0.15; Ti: 0.01-0.10; other elements: <0.05 each and <0.15 in total; rest aluminium; (b) heat treating; (c) hot rolling; (d) cold rolling; (e) optionally inter-annealing between hot rolling and cold rolling and/or during cold rolling and/or after cold rolling; (f) solution heat treating; (g) quenching; (h) optionally pre-aging; (i) shearing without any milling step.
C22C 21/02 - Alloys based on aluminium with silicon as the next major constituent
C22F 1/043 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent
3.
METHOD AND EQUIPMENT FOR COOLING ON A REVERSING HOT ROLLING MILL
The invention relates to a hot reversing mill equipped with one or more cooling systems consisting of bars of nozzles spraying an aluminum blank. It also relates to the hot rolling process associated with this hot reversing mill wherein the cooling system serves at least once making it possible to produce aluminum sheets advantageously. It also relates to the process for rolling an AA6xxx series aluminum alloy wherein a blank is cooled during the hot rolling and a sheet obtained with this process. The invention makes it possible to enhance the productivity of reversing mills by enhancing the metallurgical quality and/or the productivity of the other fabrication steps. The invention is particularly useful for providing superior quality 6xxx alloy sheets intended for the automotive industry.
B21B 1/34 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling bands or sheets of indefinite length in a non-continuous process in reversing mills, e.g. with intermediate storage reels for accumulating work by hot-rolling
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 37/44 - Control of flatness or profile during rolling of strip, sheets or plates using heating, lubricating or water-spray cooling of the product
B21B 37/74 - Temperature control, e.g. by cooling or heating the rolls or the product
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
4.
STRIP MADE OF 6XXX ALLOY AND MANUFACTURING PROCESS
The invention is an aluminum alloy strip having the composition Si: 1.00-1.50% %, Fe: <=0.30%, Mn: <=0.30%, Mg: 0.20%-0.44%, Cu: 0.80%-1.50%, Ti: 0.03%-0.15%, Cr: <=0.10%, Zn: <−0.10%. This strip has formability properties equivalent to that of an AA5182 alloy strip in state 0. This invention further relates to the production of motor vehicle doors, the inner panel of which is made with the strip according to the invention.
C22F 1/043 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent
B22D 11/00 - Continuous casting of metals, i.e. casting in indefinite lengths
B22D 11/041 - Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for vertical casting
C22C 21/02 - Alloys based on aluminium with silicon as the next major constituent
C22F 1/00 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
The invention relates to a method for preparing a liquid metal bath of a metal alloy having a chemical composition comprising at least one first element (X1) and at least one second element (X2), the preparation method comprising a charging step (b) in which all or part of the variable metal waste is introduced continuously into a melting furnace, and is melted to give all or part of a liquid metal bath, and a measurement step (c) in which a composition of said liquid metal bath is measured continuously using a laser-induced plasma atomic emission spectrometry device (3) also called a LIBS device, so as to continuously measure at least a content of said first element (X1) and a content of said second element (X2) in the liquid metal bath.
G01N 21/71 - Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light thermally excited
G01N 33/205 - Metals in liquid state, e.g. molten metals
G01N 21/84 - Systems specially adapted for particular applications
6.
ALUMINUM ALLOY FOR RECYCLING AND MANUFACTURING METHOD
The invention relates to an aluminum alloy having the following composition, in % by weight: Si: about 1.7% – about 7.0%, Fe: about 0.3% – about 0.5%, Cu: about 0.3% – about 1.0%, Mn: about 0.2% – about 0.6%, Mg: about 0.2% – about 0.6%, Zn: about 0.2% – about 0.6%, Ti, Cr, Sn, Pb, Zr, V, Sr, Ni: ≤ about 0.1%, other elements: each ≤ 0.05%, together ≤ 0.15%, remainder: Al. The invention also relates to a rolled product made of alloy according to the invention. The alloy according to the invention is particularly suitable for recycling, preferably comprises at least 20% of post-consumer waste, preferably originating from end-of-life vehicles, more preferably originating from aluminum fragmented by car crushers, Twitch.
C22C 21/02 - Alloys based on aluminium with silicon as the next major constituent
C22F 1/043 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent
7.
SUSTAINABLE REMELTING LINE FOR ALUMINIUM ALLOY SCRAP
The invention relates to a scrap remelting line comprising at least one storage silo configured to store scrap, at least two induction furnaces for remelting the scrap and obtaining the remelted liquid metal, a means for supplying the scrap to the at least two induction furnaces, at least one furnace receiving the liquid metal (6), and a means for transporting the remelted liquid metal (5, 15) to the receiving furnace. The invention also relates to the method for obtaining liquid metal from scrap remelted in induction furnaces.
The invention relates to a method for re-melting coated aluminum alloy scrap comprising a step of supplying shredded coated aluminum alloy scrap, consisting of individual entities; a decoating step, a step of preparing a heel, a step of loading and melting the decoated scrap on the heel. The invention is characterized in that the scrap has a specific geometry wherein at least 50% of the individual entities of the shredded coated scrap has a fold ratio (R) of less than or equal to 0.6, wherein the fold ratio (R) of an individual entity is defined by: fold ratio=R=(unfolded area−folded area)/(unfolded area), wherein the folded area is the maximum area of the orthogonal projection of the individual entity onto a plane and the unfolded area is the total area of the same individual entity after it has been unfolded.
The invention relates to a method for melting an aluminum load, comprising: supplying an aluminum load (11, 12, 13) of which at least 15% by weight is in the form of a sow of essentially cylindrical shape (11) of height h and maximum diameter d; loading said load into a cylindrical induction furnace (10) of height H and maximum internal diameter D in which the height direction of said sow is substantially parallel to the height direction of the furnace; melting said load by induction to obtain a liquid metal bath (2); optionally adjusting content of said liquid metal in which d is in the range from 0.7 D to 0.97 D and preferably in the range from 0.84 D to 0.92 D.
C22B 7/00 - Working-up raw materials other than ores, e.g. scrap, to produce non-ferrous metals or compounds thereof
C22B 9/00 - General processes of refining or remelting of metalsApparatus for electroslag or arc remelting of metals
F27B 14/06 - Crucible or pot furnacesTank furnaces heated electrically, e.g. induction crucible furnaces, with or without any other source of heat
F27B 14/08 - Details specially adapted for crucible, pot or tank furnaces
F27D 3/00 - ChargingDischargingManipulation of charge
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
10.
METHOD FOR SUSTAINABLY RECYCLING ALUMINIUM ALLOY SCRAP
The invention relates to a method for remelting coated aluminium alloy scrap in an induction furnace having a cylindrical crucible, which comprises steps of supplying crushed coated scrap, delacquering, charging, remelting and holding the crushed coated aluminium alloy scrap, such that at least 50% of the individual entities of the crushed coated scrap have a particle size of between 5 and 25 mm, and a flatness of less than or equal to 10 mm, and wherein the induction furnace is inerted during the charging phase, and wherein the inert gas outlet is located in the quarter of the circular section of the furnace containing the delimited zone in which the scrap falls.
CONSTELLIUM ROLLED PRODUCTS SINGEN GMBH & CO. KG (Germany)
Inventor
Guiglionda, Gilles
Arbab, Alireza
Abstract
The invention concerns a 5xxx series aluminium sheet made of an alloy comprising in wt. %: Mg: 2.5-4.0, Mn: 0.7-1.2, Fe: 0.25-0.55, Si: 0.20-0.50, Cu: 0.10-0.25, Cr: up to 0.1, Zn: up to 0.25, Ti: up to 0.1, rest aluminium and unavoidable impurities up to 0.05 each and up to 0.15 in total. The method for producing the 5xxx series aluminium sheet of the invention comprises the steps of casting an ingot with a composition according to the invention, pre-heating the ingot, rough hot rolling on a reversible mill with a rough hot rolling entry temperature of more than 440° C., finish hot rolling the ingot with a hot rolling exit temperature of at least 300° C., cold rolling to obtain a cold rolled sheet. The invention also concerns a can end and a beverage can.
C22C 21/08 - Alloys based on aluminium with magnesium as the next major constituent with silicon
C22F 1/047 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent
12.
Method and equipment for cooling on a reversing hot rolling mill
The invention relates to a hot reversing mill equipped with one or more cooling systems consisting of bars of nozzles spraying an aluminum blank. It also relates to the hot rolling process associated with this hot reversing mill wherein the cooling system serves at least once making it possible to produce aluminum sheets advantageously. It also relates to the process for rolling an AA6xxx series aluminum alloy wherein a blank is cooled during the hot rolling and a sheet obtained with this process. The invention makes it possible to enhance the productivity of reversing mills by enhancing the metallurgical quality and/or the productivity of the other fabrication steps. The invention is particularly useful for providing superior quality 6xxx alloy sheets intended for the automotive industry.
B21B 1/34 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling bands or sheets of indefinite length in a non-continuous process in reversing mills, e.g. with intermediate storage reels for accumulating work by hot-rolling
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 37/44 - Control of flatness or profile during rolling of strip, sheets or plates using heating, lubricating or water-spray cooling of the product
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
B21B 37/74 - Temperature control, e.g. by cooling or heating the rolls or the product
13.
6XXX SERIES ALUMINIUM ALLOY SHEETS OR BLANKS WITH IMPROVED FORMABILITY
The invention concerns a process for producing a sheet or a plate or a blank, comprising the following successive steps: (a) casting a 6xxx alloy comprising, in wt.%: Si: 1.25 - 1.45; Fe: ? 0.30; Cu: ? 0.15; Mn: 0.01 - 0.15; Mg: 0.25 - 0.40; Cr: 0.03; Ni: ? 0.04; Zn: ? 0.15; Ti: 0.01 ? 0.10; other elements: < 0.05 each and < 0.15 in total; rest aluminium; (b) heat treating; (c) hot rolling; (d) cold rolling; (e) optionally inter-annealing between hot rolling and cold rolling and/or during cold rolling and/or after cold rolling; (f) solution heat treating; (g) quenching; (h) optionally pre-aging; (i) shearing without any milling step.
C22C 21/02 - Alloys based on aluminium with silicon as the next major constituent
C22C 21/08 - Alloys based on aluminium with magnesium as the next major constituent with silicon
C22F 1/043 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent
C22F 1/05 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions
14.
6XXX SERIES ALUMINIUM ALLOY SHEETS OR BLANKS WITH IMPROVED FORMABILITY
The invention concerns a process for producing a sheet or a plate or a blank, comprising the following successive steps: (a) casting a 6xxx alloy comprising, in wt.%: Si: 1.25 - 1.45; Fe: ≤ 0.30; Cu: ≤ 0.15; Mn: 0.01 - 0.15; Mg: 0.25 - 0.40; Cr: 0.03; Ni: ≤ 0.04; Zn: ≤ 0.15; Ti: 0.01 – 0.10; other elements: < 0.05 each and < 0.15 in total; rest aluminium; (b) heat treating; (c) hot rolling; (d) cold rolling; (e) optionally inter-annealing between hot rolling and cold rolling and/or during cold rolling and/or after cold rolling; (f) solution heat treating; (g) quenching; (h) optionally pre-aging; (i) shearing without any milling step.
C22C 21/02 - Alloys based on aluminium with silicon as the next major constituent
C22C 21/08 - Alloys based on aluminium with magnesium as the next major constituent with silicon
C22F 1/043 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent
C22F 1/05 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions
15.
STRIP MADE OF 6XXX ALLOY AND MANUFACTURING PROCESS
The invention is an aluminium alloy strip having the composition Si: 1.00 – 1.50%; Fe: < = 0.30%; Mn: < = 0.30%; Mg: 0.20% – 0.44%; Cu: 0.80% – 1.50%; Ti: 0.03% – 0.15%; Cr: < = 0.10%; Zn: < = 0.10%. Said strip has formability properties equivalent to that of an AA5182 alloy strip in state O. The invention further relates to the production of motor vehicle doors, the inner panel of which is made with the strip according to the invention.
C22C 21/14 - Alloys based on aluminium with copper as the next major constituent with silicon
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22F 1/04 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
C22F 1/043 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent
C22F 1/05 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
16.
STRIP MADE OF 6XXX ALLOY AND MANUFACTURING PROCESS
The invention is an aluminium alloy strip having the composition Si: 1.00 ? 1.50%; Fe: < = 0.30%; Mn: < = 0.30%; Mg: 0.20% ? 0.44%; Cu: 0.80% ? 1.50%; Ti: 0.03% ? 0.15%; Cr: < = 0.10%; Zn: < = 0.10%. Said strip has formability properties equivalent to that of an AA5182 alloy strip in state O. The invention further relates to the production of motor vehicle doors, the inner panel of which is made with the strip according to the invention.
C22C 21/14 - Alloys based on aluminium with copper as the next major constituent with silicon
C22C 21/16 - Alloys based on aluminium with copper as the next major constituent with magnesium
C22F 1/04 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
C22F 1/043 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent
C22F 1/05 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys of the Al-Si-Mg type, i.e. containing silicon and magnesium in approximately equal proportions
C22F 1/057 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with copper as the next major constituent
17.
SUSTAINABLE REMELTING LINE FOR ALUMINIUM ALLOY SCRAP
The invention relates to a scrap remelting line comprising at least one storage silo configured to store scrap, at least two induction furnaces for remelting the scrap and obtaining the remelted liquid metal, a means for supplying the scrap to the at least two induction furnaces, at least one furnace receiving the liquid metal (6), and a means for transporting the remelted liquid metal (5, 15) to the receiving furnace. The invention also relates to the method for obtaining liquid metal from scrap remelted in induction furnaces.
The invention relates to the method for melting a charge of aluminium, comprising: procuring a charge (11, 12, 13) of aluminium of which at least 15 wt% is in the form of a bowl (11) of essentially cylindrical shape, of height h and maximum diameter d; loading the charge into a cylindrical induction furnace (10) of height H and of maximum inside diameter D, where the height direction of the bowl is substantially parallel to the height direction of the furnace; melting the charge using induction to obtain a bath of liquid metal (2); and optionally adjusting the composition of the liquid metal where d is in the range 0.7D to 0.97D and preferably in the range 0.84D to 0.92D.
F27D 3/00 - ChargingDischargingManipulation of charge
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
The invention relates to a method for re-melting coated aluminium alloy scrap comprising a step of supplying coated ground aluminium alloy scrap consisting of individual entities; a stripping step; a step of preparing a heel; a step of loading and melting the stripped scrap on the heel. The invention is characterised in that the scrap has a specific geometry, wherein at least 50% of the individual entities of the coated ground scrap has a fold ratio (R) of less than or equal to 0.6, wherein the fold ratio (R) of an individual entity is defined by: fold ratio =R= (unfolded area - folded area)/(unfolded area), wherein the folded area is the maximum area of the orthogonal projection of the individual entity onto a plane and the unfolded area is the total area of the same individual entity after it has been unfolded.
The invention relates to the method for melting a charge of aluminium, comprising: procuring a charge (11, 12, 13) of aluminium of which at least 15 wt% is in the form of a bowl (11) of essentially cylindrical shape, of height h and maximum diameter d; loading the charge into a cylindrical induction furnace (10) of height H and of maximum inside diameter D, where the height direction of the bowl is substantially parallel to the height direction of the furnace; melting the charge using induction to obtain a bath of liquid metal (2); and optionally adjusting the composition of the liquid metal where d is in the range 0.7D to 0.97D and preferably in the range 0.84D to 0.92D.
F27B 14/06 - Crucible or pot furnacesTank furnaces heated electrically, e.g. induction crucible furnaces, with or without any other source of heat
F27B 14/08 - Details specially adapted for crucible, pot or tank furnaces
F27D 3/00 - ChargingDischargingManipulation of charge
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
21.
SUSTAINABLE REMELTING LINE FOR ALUMINIUM ALLOY SCRAP
The invention relates to a scrap remelting line comprising at least one storage silo configured to store scrap, at least two induction furnaces for remelting the scrap and obtaining the remelted liquid metal, a means for supplying the scrap to the at least two induction furnaces, at least one furnace receiving the liquid metal (6), and a means for transporting the remelted liquid metal (5, 15) to the receiving furnace. The invention also relates to the method for obtaining liquid metal from scrap remelted in induction furnaces.
The invention concerns a 5xxx series aluminium sheet made of an alloy comprising in wt.%: Mg: 2.5 – 4.0, Mn: 0.7 – 1.2, Fe: 0.25 – 0.55, Si: 0.20 – 0.50, Cu: 0.10 – 0.25, Cr: up to 0.1, Zn: up to 0.25, Ti: up to 0.1, rest aluminium and unavoidable impurities up to 0.05 each and up to 0.15 in total. The method for producing the 5xxx series aluminium sheet of the invention comprises the steps of casting an ingot with a composition according to the invention, pre-heating the ingot, rough hot rolling on a reversible mill with a rough hot rolling entry temperature of more than 440°C, finish hot rolling the ingot with a hot rolling exit temperature of at least 300°C, cold rolling to obtain a cold rolled sheet. The invention also concerns a can end and a beverage can.
C22C 21/08 - Alloys based on aluminium with magnesium as the next major constituent with silicon
C22F 1/047 - Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent
The invention relates to a beverage can on the basis of an aluminum alloy, preferably for a carbonated drink, comprising:
a body (6) having a cylindrical shape and an outer diameter D1;
a concave dome-shaped bottom (1) having a depth H1 at its center, an outer diameter D3 and a rectilinear part (2) having a height H3;
a convex lower ring (7) having a stand diameter D2 and a flat surface with a width L2;
an outer shoulder (5) of radius R1;
a shime (4) connecting the outer shoulder (5) and the lower ring (7).
The invention relates to a beverage can on the basis of an aluminum alloy, preferably for a carbonated drink, comprising:
a body (6) having a cylindrical shape and an outer diameter D1;
a concave dome-shaped bottom (1) having a depth H1 at its center, an outer diameter D3 and a rectilinear part (2) having a height H3;
a convex lower ring (7) having a stand diameter D2 and a flat surface with a width L2;
an outer shoulder (5) of radius R1;
a shime (4) connecting the outer shoulder (5) and the lower ring (7).
The invention is characterized in that the thickness of the sheet of the dome is from 180 to 230 μm, preferably from 190 to 220 μm;
and in that the outer diameter D3 of the concave dome (1) is from 36 to 44 mm, preferably from 37 to 43 mm;
and in that the width of the lower ring L4 is from 3 to 4.5 mm, preferably from 3.3 to 4 mm;
and in that the lower ring has concave deformations (8) which are distributed at regular intervals along the lower ring (7).
The invention relates to a reversing hot rolling mill equipped with one or more cooling systems consisting of racks of nozzles which spray an aluminium blank. It also relates to the hot rolling method associated with this reversing hot rolling mill in which the cooling system is used at least once, which makes it possible to produce aluminium sheets in an advantageous manner. It also relates to the method for rolling an AA6xxx series aluminium alloy in which a blank is cooled during the hot rolling process, and a thin sheet obtained by this method. The invention makes it possible to improve the productivity of reversing rolling mills by improving the metallurgical quality and/or the productivity of the other transformation steps. The invention is particularly useful for forming high quality 6xxx alloy sheets intended for the motor vehicle industry.
B21B 1/34 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling bands or sheets of indefinite length in a non-continuous process in reversing mills, e.g. with intermediate storage reels for accumulating work by hot-rolling
25.
METHOD AND EQUIPMENT FOR COOLING ON A REVERSING HOT ROLLING MILL
The invention relates to a reversing hot rolling mill equipped with one or more cooling systems consisting of racks of nozzles which spray an aluminium blank. It also relates to the hot rolling method associated with this reversing hot rolling mill in which the cooling system is used at least once, which makes it possible to produce aluminium sheets in an advantageous manner. It also relates to the method for rolling an AA6xxx series aluminium alloy in which a blank is cooled during the hot rolling process, and a thin sheet obtained by this method. The invention makes it possible to improve the productivity of reversing rolling mills by improving the metallurgical quality and/or the productivity of the other transformation steps. The invention is particularly useful for forming high quality 6xxx alloy sheets intended for the motor vehicle industry.
B21B 1/34 - Metal rolling methods or mills for making semi-finished products of solid or profiled cross-sectionSequence of operations in milling trainsLayout of rolling-mill plant, e.g. grouping of standsSuccession of passes or of sectional pass alternations for rolling bands or sheets of indefinite length in a non-continuous process in reversing mills, e.g. with intermediate storage reels for accumulating work by hot-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
B21B 3/00 - Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences
26.
INSTALLATION FOR THE MANUFACTURE OF ALUMINIUM OR ALUMINIUM ALLOY CONTAINERS THAT IS ABLE TO CREATE AXIAL STIFFENING ASYMMETRIES IN THE CONTAINER AFTER HEAT TREATMENT
What is described is an installation for the manufacture of aluminium or aluminium alloy containers (100), preferably designed to contain a beverage, the installation being configured such that each manufactured container (100) is formed in one piece. A forming unit (720) makes it possible to obtain an intermediate container having an axial symmetry. At least one heating unit (740, 780, 820, 860) supplied by the forming unit (720) exerts a heat treatment. A functional unit (880) supplied by the intermediate containers having previously passed through said at least one heating unit (740, 780, 820, 860) makes it possible to deform the container in such a way as to make the connecting wall (103) asymmetrical around the longitudinal axis (X).
B21D 22/04 - Stamping using rigid devices or tools for dimpling
27.
INSTALLATION FOR THE MANUFACTURE OF ALUMINIUM OR ALUMINIUM ALLOY CONTAINERS, PREFERABLY DESIGNED TO CONTAIN A BEVERAGE, THE FORMING UNIT OF WHICH COMPRISES RETRACTABLE FINGERS
What is described is an installation for the manufacture of aluminium or aluminium alloy containers. A punch nose (22) varies between a first configuration in which it delimits a first spatial imprint such that, during the passage of the punch (20) from a retracted position to a first intermediate position, the punch (20) and the die assemblies, including the third die assembly (30), progressively deform by forming the unitary cup (500) in a manner making it possible to temporarily form a preform (100'), a bottom wall (102) and a connecting wall (103) of which have a constant cross section around a longitudinal axis (X), and a second configuration in which it delimits a second spatial imprint such that, in an extended position of the punch (20), the connecting wall (103) of the container (100) obtained by forming between the punch (20) and the third die assembly (30) has a variable cross section around the longitudinal axis (X).
The invention relates to a beverage can on the basis of an aluminum alloy, preferably for a carbonated drink, comprising: a body 5 having a cylindrical shape and an outer diameter D1; - a concave dome-shaped bottom 1 having a depth H1 at its center, an outer diameter D3 and a rectilinear part 2 having a height H3; - a convex lower ring 6 having a bearing diameter D2 and a width L1; - a comb 4 connecting the body 5 and the dome 1. The invention is characterized in that the thickness of the sheet of the dome is from 180 to 230 μm, preferably from 190 to 220 μm; and in that the diameter D2 of the lower ring is from 39 to 47 mm, preferably from 40 to 46 mm; and in that the lower ring comprises concave deformations 9 which are distributed at regular intervals along the ring; and in that the comb 4 comprises, or preferably consists of, a rectilinear portion 7 and a curved portion 8, the curved portion 8 comprising, or preferably consisting of, a succession of three radii, a first radius R1, a second radius R2 and a third radius R3, forming undulations from the body 5 to the rectilinear portion 7.
The invention relates to a beverage can on the basis of an aluminum alloy, preferably for a carbonated drink, comprising: - a body (6) having a cylindrical shape and an outer diameter D1; - a concave dome-shaped bottom (1) having a depth H1 at its center, an outer diameter D3 and a rectilinear part (2) having a height H3; - a convex lower ring (7) having a bearing diameter D2 and a flat surface with a width L2; - an outer shoulder (5) of radius R1; - a comb (4) connecting the outer shoulder (5) and the lower ring (7). The invention is characterized in that the thickness of the sheet of the dome is from 180 to 230 μm, preferably from 190 to 220 μm; and in that the outer diameter D3 of the concave dome (1) is from 36 to 44 mm, preferably from 37 to 43 mm; and in that the width of the lower ring L4 is from 3 to 4.5 mm, preferably from 3.3 to 4 mm; and in that the lower ring has concave deformations (8) which are distributed at regular intervals along the lower ring (7).
patents
