| 发明名称 |
Aluminum alloy material for shutter of recording medium cassette, process for producing the same, and aluminum alloy shutter made of the same |
| 摘要 |
An aluminum alloy material for the shutter of flat recording medium cassettes. The shutter is light in weight and smoothly slidable, has good corrosion resistance and durability, and protects itself against staining with fingerprints. The aluminum alloy contains 3.0-6.0% Mg (by weight) and one or more than one optional elements of Mn</=1.5%, Cr</=0.3%, Cu</=0.5%, and Ti</=0.1%, with the balance being aluminum and inevitable impurities, and has a tensile strength of 310-410 MPa and a yield strength of 250-370 MPa. The aluminum alloy material is formed from a rolled sheet of said aluminum alloy by coating the sheet with a plastic film not thicker than 5 mu m. The rolled sheet undergoes intermediate annealing at higher than the recrystallization temperature, final cold rolling, and stabilizing heat treatment.
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| 申请公布号 |
US5512111(A) |
申请公布日期 |
1996.04.30 |
| 申请号 |
US19940227551 |
申请日期 |
1994.04.14 |
| 申请人 |
SUMITOMO LIGHT METAL INDUSTRIES, LTD. |
发明人 |
TAHARA, SHOZO;KIMURA, TAIZO;MIYAZAKI, HIROKI;HANAKI, KAZUHIRO |
| 分类号 |
B32B15/08;C22C21/06;C22F1/047;C23C22/24;G11B23/02;G11B23/03;G11B23/033;(IPC1-7):C22C21/06 |
主分类号 |
B32B15/08 |
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