Patent ID: 9718145
Date: 2017-08-01
CPC Classifications: B21B,B23K,B32B,C22C,C22F

Claim:
1. A method of producing an aluminum clad member by superposing at least one Al skin member formed of aluminum or an aluminum alloy on one or both of opposite major surfaces of an Al core member formed of aluminum or an aluminum alloy, to form a stack, and subjecting the stack to a hot rolling process, to join together said Al core member and said at least one Al skin member and integrate those members into a one-piece body, wherein: said stack comprises a joining assistance member disposed at a joint interface between said Al core member and said at least one Al skin member, said joining assistance member being formed by crossing Al wires of aluminum or an aluminum alloy with each other in longitudinal and lateral directions to form a grid, and having a structure in which thick portions having a thickness of 0.2-3.2 mm are formed at intersections of said Al wires and arranged in the longitudinal and lateral directions so as to be spaced apart from each other by a distance of 0.2-13 mm; said hot rolling process is performed with respect to said stack in a state wherein prior to said hot rolling process said Al core member, said joining assistance member and said at least one Al skin member are partially fixed together at a portion of a perimeter of said stack, or those members are not fixed together, and said joint interface that is to be subjected to said hot rolling process is communicated with an ambient air.