B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
B32B 15/08 (2006.01) B05D 7/00 (2006.01) C23C 28/00 (2006.01)
Patent
CA 2156477
An aluminum alloy sheet combining excellent press formability and spot weldability is disclosed. A chromate film of about 1.0 to 50.0 mg/m2 expressed in terms of metallic chromium is formed as a first layer on an aluminum alloy sheet, and an organic resin film containing about 60-95 % by weight of organic lubricant and having a thickness of 0.02 to 0.90 µm in terms of dry thickness is formed as a second layer on the chromate film. As the organic lubricant, a high-density polyethylene having a mean molecular weight of about 900 to 15,000 and a density of about 0.93 g/ml or more is preferable. This aluminum alloy sheet can be effectively used for automobile body applications.
Hashiguchi Koichi
Ikeda Rinsei
Matsumoto Yoshihiro
Nabae Motohiro
Nishiyama Naoki
Kawasaki Steel Corporation
Smart & Biggar
The Furukawa Electric Co. Ltd.
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