Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
  • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
  • B23K20/22—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded
  • B23K20/227—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded with ferrous layer
  • B23K20/2275—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating taking account of the properties of the materials to be welded with ferrous layer the other layer being aluminium
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B15/00—Layered products comprising a layer of metal
  • B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
  • B32B15/016—Layered products comprising a layer of metal all layers being exclusively metallic all layers being formed of aluminium or aluminium alloys
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S428/00—Stock material or miscellaneous articles
  • Y10S428/922—Static electricity metal bleed-off metallic stock
  • Y10S428/9265—Special properties
  • Y10S428/927—Decorative informative
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/12—All metal or with adjacent metals
  • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
  • Y10T428/12535—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
  • Y10T428/12583—Component contains compound of adjacent metal
  • Y10T428/1259—Oxide
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/12—All metal or with adjacent metals
  • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
  • Y10T428/12736—Al-base component
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/12—All metal or with adjacent metals
  • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
  • Y10T428/12736—Al-base component
  • Y10T428/12764—Next to Al-base component

Definitions

• This invention relates to the manufacture of decorative products of aluminum and alloys of aluminum.
• tint of the oxide layer of an anodized aluminum or alloy of aluminum depends somewhat on the chemical composition of the metal at the surface.
• This property has been used in the manufacture of decorative products having an oxide layer of various colors by anodizing the parts in which the chemical composition at the surface varies locally, depending somewhat upon the design.
• the welding seams appear as different colors from that of the sheet.
• a sheet of aluminum alloy is plated with a layer of another alloy of aluminum. Thereafter, the external layer is locally heated in order to cause diffusion of the two alloys into one another with the formation of zones having different chemical compositions which develop different colors upon anodization.
• the colors of the final outside layer, as well as other properties of the sheet, such as mechanical resistance, stability for stamping, etc. depend primarily on the chemical composition of the composite, this may result in conflict between the desired colors and the desired properties of the final product.
• lt is an object of this invention to produce and to provide a method for producing composite sheets having surface designs of local chemical heterogeneities whereby the inconveniences heretofore described can be overcome for producing colors which differ in the surface of the metal.
• a composite sheet known as a covering sheet, which is relatively thin and has on the surface zones of various chemical compositions corresponding to the tints desired in the final oxide layer.
• the sheet is joined, as by welding or by hot rolling, with the heterogeneous phase outermost onto a relatively thick plate, hereinafter referred to as the support plate, the chemical composition of the support plate corresponding to the mechanical or physical properties desired for the final product and in which the ratio of thickness between the support and the cover sheet is at least equal to 5.
• the assembly comprising the support plate and cover sheet joined one to the other, is then rolled to the desired final thickness, which should be at most equal to H15 and preferably in the range of l/30 to H500 of the initial thickness.
• an elongate strip formed of the composite sheet which has designs on the surface in the form of elongated veins, of which the chemical compositions can vary progressively from one vein to the other and which are capable of producing, by anodization, a decorative design with tint variations in which the overall appearance is reproduced throughout the length of the strip.
• the mechanical properties of the composite will correspond to those of a simple sheet formed solely of the support plate.
• the composite sheet can, for example, be subjected to a mechani cal forming treatment and/or to a heat treatment which may be adapted to impart high mechanical characteristics.
• the cover sheet is selected to have a thickness within the range of a few millimeters to several tens of millimeters, such as up to millimeters, before application while the support has a thickness which may be within the range of 6 to 20 times the thickness of the cover sheet.
• cover sheet For manufacturing the cover sheet, use is made of a sheet having a thickness of 20 millimeters, a length of 3 meters and a width of 1.5 meters, formed of an A-Ml alloy containing approximately 1.2 percent by weight manganese and 98.8 percent by weight of aluminum with the usual impurities.
• A-Ml alloy containing approximately 1.2 percent by weight manganese and 98.8 percent by weight of aluminum with the usual impurities.
• One face of the sheet is plated beforehand with a layer having a thickness of 2 millimeters of A-Sl2 alloy containing about 12 percent by weight silicon and 88 percent by weight aluminum, plus impurities.
• the surface layer of A-Sl2 alloy and the underlying layer of A-Ml alloy are locally melted in accordance with a design in the form of zig-zag lines, as by the use of a torch or an arc welding head of the known TlG type.
• the two alloys A-Sl2 and A-Ml become partially intermixed in a more or less regular manner.
• the two alloys A-Sl2 and A-Ml mutually diffuse in the solid state one into another.
• This cover sheet is then plated by hot rolling onto a support having a thickness of 200 millimeters, a length of 3 meters and a width of 1.5 meters.
• the support consists of A-MIG alloy containing about 1.3 percent by weight manganese, 1.1 percent by weight magnesium and 97.6 percent by weight aluminum plus impurities.
• the cover sheet is positioned with the surface of A-S l 2 facing outwardly.
• the assembly comprising the support and cover sheet is rolled to a thickness of about 4 millimeters.
• the original motif of heterogeneities in the cover sheet will be extended more than 50-fold.
• the composite strip having a thickness of 4 millimeters, is subjected to surface pickling to a depth of about 2/l00 millimeters, followed by anodization in an aqueous sulphuric acid solution, in accordance with known procedures.
• the anodized strip has a deep grey surface decorated with more or less elongated light veins, suggesting the appearance of the surface of certain natural rocks.
• the composite product of this invention can he employed in such fields as architecture, furniture, household articles, automobile bodies and various articles for decorative and/or structural purposes.
• a process for manufacturing composite sheets including a face sheet of aluminum or an alloy of aluminum having on the surface local chemical heterogeneities capable of causing variation in tint in response to anodization comprising positioning a relatively thin composite sheet having local surface heterogeneities of a composition corresponding to the tints desired for the final anodized oxide layer to cover the entire surface of a relatively thick support plate consisting of a metal having the mechanical and/or physical properties desired for the final product, the ratio between the thickness of the support and the composite sheet being at least equal to 5, rolling the composite sheet and support for reduction in combined thickness by an amount at least equal to l/l5 of the initial thickness.
• a decorative product obtained by anodizing the composite sheet ma nufactufed the process of claim 1.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Laminated Bodies (AREA)
• Metal Rolling (AREA)
• Pressure Welding/Diffusion-Bonding (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=9032481

Family Applications (1)

Country Status (10)

Cited By (8)

Citations (5)

• 1969
  • 1969-04-16 FR FR6911760A patent/FR2040876A5/fr not_active Expired
• 1970
  • 1970-04-13 US US028061A patent/US3865560A/en not_active Expired - Lifetime
  • 1970-04-14 GB GB1766270A patent/GB1311970A/en not_active Expired
  • 1970-04-15 AT AT342770A patent/AT298952B/de not_active IP Right Cessation
  • 1970-04-15 ES ES378612A patent/ES378612A1/es not_active Expired
  • 1970-04-15 NL NL7005389A patent/NL7005389A/xx unknown
  • 1970-04-15 CA CA080,239A patent/CA948359A/en not_active Expired
  • 1970-04-15 NO NO01410/70A patent/NO126781B/no unknown
  • 1970-04-15 BE BE748975D patent/BE748975A/xx unknown
  • 1970-04-16 CH CH569870A patent/CH513990A/fr not_active IP Right Cessation

Patent Citations (5)

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