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CN-121986005-A - Method for producing an aluminum alloy cladding material for pressure forming, and pressure formed product

CN121986005ACN 121986005 ACN121986005 ACN 121986005ACN-121986005-A

Abstract

A method for producing an aluminum alloy clad material for press molding, the aluminum alloy clad material including a core material and first and second clad materials joined to both sides of the core material to sandwich the core material, the method including the steps of A preparing a 5000-series or 6000-series first aluminum alloy using scrap of an aluminum window frame containing Si, fe, cu and Mg as additive elements, B preparing a second aluminum alloy in which at least Si and Mg contents are smaller than those in the first aluminum alloy, C forming a plate for the core material using the first aluminum alloy, D forming a plate for the first clad material and a plate for the second clad material using the second aluminum alloy independently of each other, and E rolling in a state in which the plate for the first clad material and the plate for the second clad material are provided to sandwich the plate for the core material.

Inventors

  • Takemura satori
  • Cheng Tianshe

Assignees

  • 株式会社UACJ

Dates

Publication Date
20260505
Application Date
20240925
Priority Date
20231010

Claims (15)

  1. 1. A method of producing an aluminum alloy clad material for press molding, the aluminum alloy clad material including a core material, a first clad material, and a second clad material, the first clad material and the second clad material being joined to both sides of the core material to sandwich the core material, the method comprising: step A, preparing 5000 series or 6000 series first aluminum alloy by using scrap of an aluminum window frame containing Si, fe, cu and Mg as additive elements; step B, preparing a second aluminum alloy, wherein the content of at least Si and Mg is smaller than that of Si and Mg in the first aluminum alloy; step C, forming a plate for the core material by using the first aluminum alloy; step D, forming a plate for the first cladding material and a plate for the second cladding material independently of each other using the second aluminum alloy, and And E, rolling in a state that the plate for the first coating material and the plate for the second coating material are arranged to sandwich the plate for the core material.
  2. 2. The production method according to claim 1, wherein the waste of the aluminum window frame contains 0.44 mass% or more and 0.56 mass% or less of Si, 0.17 mass% or more and 0.30 mass% or less of Fe, 0.01 mass% or more and 0.05 mass% or less of Cu, and 0.21 mass% or more and 0.56 mass% or less of Mg.
  3. 3. The production method according to claim 1 or 2, wherein the first aluminum alloy contains 10 mass% or more of the scrap.
  4. 4. The production method according to claim 1 or 2, wherein the first aluminum alloy contains 50 mass% or more of the scrap.
  5. 5. The production method according to claim 1 or 2, wherein the step a includes a step of adding any of the additive elements and/or primary aluminum such that the first aluminum alloy is a 5000-series aluminum alloy, and the 5000-series aluminum alloy contains 0.4 mass% or more of Si, 0.1 mass% or more of Fe, 0.01 mass% or more of Cu, and 2.1 mass% or more of Mg, the balance being aluminum and unavoidable impurities.
  6. 6. The production method according to claim 5, wherein the step A includes a step of adding any of the additive elements and/or the raw aluminum such that the first aluminum alloy contains 0.8 mass% or less of Si, 0.4 mass% or less of Fe, 0.1 mass% or less of Cu, and 2.7 mass% or less of Mg.
  7. 7. The production method according to claim 1 or 2, wherein the step a includes a step of adding any of the additive elements and/or primary aluminum such that the first aluminum alloy is a 6000-series aluminum alloy, and the 6000-series aluminum alloy contains 0.4 mass% or more of Si, 0.1 mass% or more of Fe, 0.01 mass% or more of Cu, and 0.4 mass% or more of Mg, the balance being aluminum and unavoidable impurities.
  8. 8. The production method according to claim 7, wherein the step A includes a step of adding any of the additive elements and/or the raw aluminum such that the first aluminum alloy contains 0.8 mass% or less of Si, 0.4 mass% or less of Fe, 0.1 mass% or less of Cu, and 0.6 mass% or less of Mg.
  9. 9. The production method according to claim 1 or 2, wherein the sheet for the first cladding material and the sheet for the second cladding material are formed by dividing one sheet for cladding material formed using the second aluminum alloy.
  10. 10. An aluminum alloy cladding material for press forming, comprising: Core material, and A first cladding material and a second cladding material bonded to both sides of the core material to sandwich the core material, wherein The core material is formed of a 5000 series aluminum alloy, and the 5000 series aluminum alloy contains 0.4 mass% or more of Si, 0.1 mass% or more of Fe, 0.01 mass% or more of Cu, and 2.1 mass% or more of Mg, the balance being aluminum and unavoidable impurities, and The first cladding material and the second cladding material are each independently formed from an aluminum alloy having a content of at least Si and Mg that is less than the content of Si and Mg in the core material.
  11. 11. The cladding material according to claim 10, wherein the aluminum alloy of the core material contains 0.8 mass% or less of Si, 0.4 mass% or less of Fe, 0.1 mass% or less of Cu, and 2.7 mass% or less of Mg.
  12. 12. An aluminum alloy cladding material for press forming, comprising: Core material, and A first cladding material and a second cladding material bonded to both sides of the core material to sandwich the core material, wherein The core material is formed of a 6000-series aluminum alloy, and the 6000-series aluminum alloy contains 0.4 mass% or more of Si, 0.1 mass% or more of Fe, 0.01 mass% or more of Cu, and 0.4 mass% or more of Mg, the balance being aluminum and unavoidable impurities, and The first cladding material and the second cladding material are each independently formed from an aluminum alloy having a content of at least Si and Mg that is less than the content of Si and Mg in the core material.
  13. 13. The cladding material according to claim 12, wherein the aluminum alloy of the core material contains 0.8 mass% or less of Si, 0.4 mass% or less of Fe, 0.1 mass% or less of Cu, and 0.6 mass% or less of Mg.
  14. 14. A press-molded product produced using the aluminum alloy cladding material for press molding according to any one of claims 10 to 13.
  15. 15. The production method according to claim 1, wherein the waste of the pressure-formed product according to claim 14 is used instead of the waste of the aluminum window frame.

Description

Method for producing an aluminum alloy cladding material for pressure forming, and pressure formed product Technical Field The present invention relates to a method for producing an aluminum alloy clad material for press molding, and a press molded product, and more particularly, to a method for producing an aluminum alloy clad material for press molding, which has more excellent recovery efficiency than in the prior art, an aluminum alloy clad material for press molding produced by such a production method, and a press molded product produced using such an aluminum alloy clad material for press molding. Background In recent years, demand for resource recovery has been increasing in various fields. Since the aluminum alloy produced by reducing bauxite is produced by consuming a large amount of electric power, recovery is required from the viewpoints of saving resources, reducing costs, and the like. For example, patent document 1 discloses a recycling method comprising a step of melting recycled aluminum alloy into liquid metal, a step of adding magnesium, silicon or copper as an alloying element to the liquid metal to form a modified liquid metal, a step of casting the modified liquid metal, and a step of rolling the cast alloy, wherein the modified liquid metal contains 50% or more of the recycled aluminum alloy. According to the recycling method described in patent document 1, a metal product having high strength and high formability can be cast from scrap of aluminum alloy. Citation list Patent literature Patent document 1, JP2020-514556A (JP 7163304B) Disclosure of Invention Technical problem The present inventors have studied improvement of recovery efficiency by limiting scrap of an aluminum alloy material to be recovered and limiting an aluminum alloy material produced by recovery. When the same kind of material is simply recycled repeatedly, there is a problem in that the impurity concentration increases, and when the material is recycled to the same alloy composition repeatedly, the amount of raw aluminum to be added increases, and the recycling efficiency decreases. The object of the present invention is to provide a method for producing an aluminum alloy clad material for press forming, which can improve recovery efficiency. Another object of the present invention is to provide an aluminum alloy cladding material for press molding which can be produced by such a production method, and a press molded product produced using such an aluminum alloy cladding material for press molding. Solution to the problem According to an embodiment of the invention, a solution described in the following is provided. [ Item 1] A method for producing an aluminum alloy clad material for press molding, the aluminum alloy clad material including a core material and first and second clad materials joined to both sides of the core material to sandwich the core material, the method comprising: step A, preparing 5000 series or 6000 series first aluminum alloy by using scrap of an aluminum window frame containing Si, fe, cu and Mg as additive elements; Step B, preparing a second aluminum alloy, wherein the content of at least Si and Mg is smaller than that of the first aluminum alloy; step C, forming a plate for the core material by using a first aluminum alloy; Step D, forming a plate for the first cladding material and a plate for the second cladding material independently of each other using a second aluminum alloy, and And E, rolling in a state that the plate for the first coating material and the plate for the second coating material are arranged to sandwich the plate for the core material. The additive element contained in the second aluminum alloy may further include at least one element selected from the group consisting of Fe, cu, mn, zn, cr and Ti, in addition to Si and Mg. Mn, zn, cr and Ti contribute to the hue and/or material strength after the aluminum oxidation treatment. [ Item 2] The production method according to item 1, wherein the waste of the aluminum window frame contains 0.44 mass% or more and 0.56 mass% or less of Si, 0.17 mass% or more and 0.30 mass% or less of Fe, 0.01 mass% or more and 0.05 mass% or less of Cu, and 0.21 mass% or more and 0.56 mass% or less of Mg. [ Item 3] The production method according to item 1 or item 2, wherein the first aluminum alloy contains 10 mass% or more of scrap. [ Item 4] The production method according to item 1 or item 2, wherein the first aluminum alloy contains 50 mass% or more scrap. [ Item 5] The production method according to any one of items 1 to 4, wherein step A includes a step of adding any additive element and/or primary aluminum so that the first aluminum alloy is a 5000 series aluminum alloy containing Si of 0.4 mass% or more, fe of 0.1 mass% or more, cu of 0.01 mass% or more, and Mg of 2.1 mass% or more, the balance being aluminum and unavoidable impurities. [ Item 6] The production method according to item 5, wherein step A includes a step of adding