Aluminum alloy clad material for molding

Abstract

An aluminum alloy clad material for molding is equipped with: an aluminum alloy core material comprising 0.2-1.5 mass% of Mg, 0.2-2.5 mass% of Si, and 0.2-3.0 mass% of Cu, with the remainder comprising Al and unavoidable impurities; an aluminum alloy coating material that is clad on one or both surfaces of the core material, that has a thickness of 3-30% the total sheet thickness on one surface, and that has a composition comprising 0.2-1.5 mass% of Mg and 0.2-2.0 mass% of Si, with the content of Cu being limited to 0.1 mass% or less and the remainder comprising Al and unavoidable impurities; and an aluminum alloy insert material that is interposed between the core material and the coating material and that has a solidus temperature of at most 590 DEG C.

Description

technical field [0001] The present invention relates to a material or component of various automobiles, ships, aircraft, etc., such as automobile body panels and body panels, or building materials, structural materials, and various mechanical appliances, household electrical appliances or parts thereof, etc. The raw material is an aluminum alloy cladding material for forming processing and coating and firing. Background technique [0002] In the past, cold-rolled steel sheets have been mainly used as body panels for automobiles in many cases, but recently aluminum alloy rolled sheets have been increasingly used from the viewpoint of weight reduction and the like. [0003] However, since the body panels of automobiles are used by press work, excellent formability is required, and since the outer panel and the inner panel are joined and integrated, etc., they are often used with hemming and bending. In formability, it is also required to be excellent in hemming processability...

AI Technical Summary

Problems solved by technology

However, in Al-Mg-Si-based alloys or Al-Mg-Si-Cu-based alloys for automobile body panels, poor adhesion between the core material and the skin material is likely to occur when clad rolling is performed by a conventional method. In addition, it causes various problems such as cladding interface peeling, poor cladding ratio, quality abnormalities called blisters, and decreased productivity of cladding materials, so it is difficult to actually use them on a mass production scale.

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