The invention concerns a method to make an aluminium alloy sheet product wherein successively, a slab is cast of an aluminium alloy comprising, by weight % Mn: 0.9-1.2, Fe: 0.5-0.8, Si: 0.05-0.25, Cu: 0.06-0.20, Ti: ≤0.1, and by ppm, Mg: <100, Zn: <100, B: <200, Sn: <100, Bi: <100, Cr: ≤100, other impurities <500 each and <1500 total, remainder aluminium, the slab is homogenized at a temperature of at least 610° C. and preferably of at least 615° C., the homogenized slab is hot rolled and cold rolled into a sheet, which is optionally thermally treated and/or tension leveled. The aluminium alloy sheet product of the invention are useful in particular to make parallelepiped battery housing.
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
H01M 50/103 - Primary casingsJackets or wrappings characterised by their shape or physical structure prismatic or rectangular
2.
DURABLE ALUMINIUM ALLOY SHEET FOR DECORATIVE APPLICATIONS
The invention relates to improved sheets for decorative and formable parts made of an aluminium alloy which comprises, in wt. %, Mg: 0.8-1.3, Mn: 0.8-1.2, Cu: 0.05-0.30, Cr: 0.05-0.30, Fe: ≤0.4, Si: ≤0.3, Zn: ≤0.25, Ti: ≤0.15, impurities<0.05 each and <0.15 total, remainder aluminium. The method to make a sheet according to the invention comprises casting a slab with a composition according to the invention, homogenizing, hot and cold rolling the slab, annealing and tension leveling. The sheet according to the invention are particularly useful to make a coated decorative part preferably a decorative part for an automobile, or a household appliance or a medical device.
C22C 21/06 - Alloys based on aluminium with magnesium as the next major constituent
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
3.
ALUMINUM ALLOY PLATE SHEET FOR PARALLELEPIPED BATTERY HOUSING
The invention concerns a method to make an aluminium alloy sheet product wherein successively, a slab is cast of an aluminium alloy comprising, by weight % Mn: 0.9 –1.2, Fe: 0.5 – 0.8, Si: 0.05 – 0.25, Cu: 0.06 – 0.20, Ti: ≤ 0.1, and by ppm, Mg: < 100, Zn: < 100, B: < 200, Sn: < 100, Bi: < 100, Cr: ≤ 100, other impurities < 500 each and < 1500 total, remainder aluminium, the slab is homogenized at a temperature of at least 610 °C and preferably of at least 615 °C, the homogenized slab is hot rolled and cold rolled into a sheet, which is optionally thermally treated and/or tension leveled. The aluminium alloy sheet product of the invention are useful in particular to make parallelepiped battery housing.
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
B21B 3/00 - Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences
B22D 11/00 - Continuous casting of metals, i.e. casting in indefinite lengths
C21D 1/02 - Hardening articles or materials formed by forging or rolling, with no further heating beyond that required for the formation
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
5.
Method for manufacturing long metal stopper caps comprising a skirt having a constant thickness
The invention relates to a rolled aluminum-based alloy product for cosmetic packaging comprising, (in weight %): Mn 1.0-1.5, Mg 0.2-0.6, Si 0.2-0.6, Fe 0.1-0.7, Cu 0.05-0.3, Cr 0-0.1, Zn 0-0.3, Ti 0-0.15, other elements ≤0.05 each and ≤0.15 total, remainder Al, wherein the fraction of Al(Fe,Mn)Si phase is at least 50%. The invention also related to a process for the manufacture of a rolled aluminum-based alloy product comprising the steps of: a) casting an ingot with a composition according to the invention; b) homogenizing the ingot at a temperature of at least 480° C.; c) hot rolling said homogenized ingot to a hot-rolled intermediate product; d) cold rolling said hot-rolled intermediate product to a cold-rolled intermediate product; e) recrystallization annealing of the cold-rolled intermediate product; f) cold rolling the annealed cold-rolled intermediate product to a cold-rolled product at final thickness; g) recovery annealing the cold-rolled product at final thickness. The products of the invention are particularly useful for cosmetic packaging, preferably for containers such as bottles, cups, tubes, holders, with a matt surface aspect.
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
C21D 8/02 - Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
7.
DURABLE ALUMINIUM ALLOY SHEET FOR DECORATIVE APPLICATIONS
The invention relates to improved sheets for decorative and formable parts made of an aluminium alloy which comprises, in wt.%, Mg : 0.8 – 1.3, Mn : 0.8 – 1.2, Cu: 0.05 –0.30, Cr : 0.05 – 0.30, Fe : ≤ 0.4, Si : ≤ 0.3, Zn : ≤ 0.25, Ti : ≤ 0.15, impurities < 0.05 each and < 0.15 total, remainder aluminium. The method to make a sheet according to the invention comprises casting a slab with a composition according to the invention, homogenizing, hot and cold rolling the slab, annealing and tension leveling. The sheet according to the invention are particularly useful to make a coated decorative part preferably a decorative part for an automobile, or a household appliance or a medical device.
C22C 21/06 - Alloys based on aluminium with magnesium as the next major constituent
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
8.
THIN METAL SHEET MADE FROM ALUMINIUM ALLOY WITH HIGH DUCTILITY
The invention relates to thin metal sheets with a substantially recrystallised microstructure, having a composition, in % by weight, of Mg: 0.65 - 0.85, Fe: 0.10 – 0.20, Si: 0.05 - 0.09, Mn: ≤ 0.03, Cu: ≤ 0.05, Cr: ≤ 0.02, Zn: <0.10, Ti: ≤ 0,03, other elements or impurities < 0.05 each and < 0.15 in total, the balance being aluminium. The method for manufacturing the products according to the invention comprises casting an alloy with a composition according to the invention in the form of a rolling plate, reheating the plate, hot-rolling, cold-rolling and annealing. The thin metal sheets according to the invention are particularly used to produce workpieces which have a complex shape and which are shaped in three spatial dimensions, in particular by stamping.
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
9.
ALUMINIUM ALLOY SHEET PRODUCT WITH IMPROVED SURFACE ASPECT
The invention relates to a rolled aluminum-based alloy product for cosmetic packaging comprising, (in weight %) : Mn 1.0 – 1.5, Mg 0.2 – 0.6, Si 0.2 – 0.6, Fe 0.1 – 0.7, Cu 0.05 – 0.3, Cr 0 – 0.1, Zn 0 – 0.3, Ti 0 – 0.15, other elements ≤ 0.05 each and ≤ 0.15 total, remainder Al, wherein the fraction of Al(Fe,Mn)Si phase is at least 50 %. The invention also related to a process for the manufacture of a rolled aluminum-based alloy product comprising the steps of: a) casting an ingot with a composition according to the invention; b) homogenizing the ingot at a temperature of at least 480 °C; c) hot rolling said homogenized ingot to a hot-rolled intermediate product; d) cold rolling said hot-rolled intermediate product to a cold-rolled intermediate product; e) recrystallization annealing of the cold-rolled intermediate product; f) cold rolling the annealed cold-rolled intermediate product to a cold-rolled product at final thickness; g) recovery annealing the cold-rolled product at final thickness. The products of the invention are particularly useful for cosmetic packaging, preferably for containers such as bottles, cups, tubes, holders, with a matt surface aspect.
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
10.
METHOD FOR MANUFACTURING LONG METAL STOPPER CAPS COMPRISING A SKIRT HAVING A CONSTANT THICKNESS
Disclosed is a method for manufacturing metal stopper caps comprising the following sequence of steps: a) providing a strip or sheet made from aluminium alloy coated on both faces with a layer of varnish; b) a first cutting operation in order to obtain discs referred to as blanks; c) a step of stamping the blanks, in one or more passes, in order to form a stamped preform, comprising a head and a skirt; c') at least one drawing step consisting of passing the stamped preform through at least one drawing ring in order to lengthen the metal and make it thinner, so as to form a cap comprising a head preferably having a diameter of between 20 and 40 mm, and more preferably between 25 and 35 mm, a skirt preferably having a length of between 40 and 85 mm, more preferably between 40 and 83 mm, more preferably still between 40 and 80 mm, more preferably still between 40 and 70 mm, and more preferably still between 45 and 65 mm, the top of the cap being on the head side and the bottom of the cap on the side where the skirt ends, the skirt having a constant thickness of between 0.12 and 0.27 mm, and preferably between 0.15 and 0.25 mm, over at least 20% of its length starting from the bottom of the cap (and preferably up to 60% of its length starting from the bottom of the cap), and comprising a continuous and intact layer of varnish along the entire length of the skirt, on both the inside and the outside of the cap; d) an optional step of degreasing the cap; e) an optional step of printing and/or applying finishing varnish for protection and/or decoration.
The present invention is directed to an anodized decorative rolled product made of an aluminum alloy consisting of, in weight %,; Mg : 0 –1.5; Mn : 0 –1.5; With Mg + Mn : 0.5 –3 and wherein either Mn : 0.8 –1.5 or Mg : 0.5 –1.1 and Mn ≤ 0.2; Si : ≤ 0.6; Fe : ≤ 0.8; Ti : ≤ 0.1; Cu : ≤ 0.3; Cr : ≤ 0.1; Zn : ≤ 0.25; Zr : ≤ 0.1; other elements ≤ 0.05 each and ≤ 0.15 in total, remainder aluminium,; wherein the rolled product has a porous anodic oxide film which is colored electrochemically or chemically and wherein the color of the decorative sheet is different if viewed at an incidence angle 0° and at an incidence angle of 45°. The product of the invention is particularly useful for decorative applications such as cosmetic packaging, automotive trims (exterior and interior), interior design, sound system and consumer electronics.
The invention concerns a method for cold rolling bright aluminium rolled products and comprises: (a) Providing a first aluminium alloy rolled product (b) Rolling said first product with a rolling mill (1) having at least one work roll ground to a finish (11), with a roughness Ra less than 1 μm, and using a rolling lubricant (51) from a first container (2) comprising less than 150 mg/L of aluminium debris to obtain a second aluminium rolled product having at least one bright surface, (c) Transferring at least a portion of said rolling lubricant to a second container (3) (d) Filtering the lubricant from said second container (52) by using cross flow filtration (4) through a membrane (41), to obtain a cleaned rolling lubricant (54) comprising less than 10 mg/L and preferably less than 5 mg/L of aluminium debris preferentially having a mean diameter of less than 2 μm, (e) Returning said cleaned rolling lubricant (54) to the first container.
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 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
13.
METHOD FOR MANUFACTURING AN ENGRAVED METAL SHEET FOR A COMPOSITE PRODUCT AND SUCH AN ENGRAVED METAL SHEET
A first subject matter of the invention consists of method for manufacturing an engraved metal sheet having undercuts (2, 2'), said metal sheet (1) being suitable for the mechanical attachment of a thermoplastic polymer (3), characterised in that it comprises: a) a step of mechanical engraving of a metal sheet in which first engraving tool, applied by pressure against a first main surface of the metal sheet, has a pattern in relief to produce an engraved sheet carrying the negative impression (4, 4') of said pattern in relief; b) a step of crushing the metal sheet (1) thus engraved to produce one or more undercuts (2, 2') in said negative impression (4, 4') of said pattern in relief. Another subject matter of the invention is an engraved metal sheet obtainable by the method according to the invention as well as a composite product comprising said engraved metal sheet and a thermoplastic polymer, the engraved metal sheet and (1) the polymer (3) being mechanically fixed to each other.
B44B 5/00 - Machines or apparatus for embossing decorations or marks, e.g. embossing coins
B29C 45/14 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
patents
