发明名称 |
Multi-layer aluminum alloy brazing sheet |
摘要 |
A composite brazing material is described, composed of a layer (usually an ingot) of high manganese content aluminum alloy (3000 series alloy; the "core") and a layer of high silicon content aluminum alloy (4000 series alloy; the "cladding") with a layer of aluminum alloy having the following composition: -silicon 6.8-8.2 wgt. % -iron up to 0.8 wgt. % -copper up to 0.25 wgt. % -manganese up to 0.10 wgt. % -zinc up to 0.20 wgt. % -other elements up to 0.15 wgt. % -aluminum balance - disposed between the cladding and core layers and in contact with both. Subsequent hot rolling of the multi-layer composite produces a good bond between the core and the cladding through the intermediate layer. The resulting brazing material has the external properties of a simple two-layer composite of core and cladding without the intermediate layer. The three layer composite of the present invention, however, has a much stronger interlayer bond and is not subject to the serious delamination or bond failures of the prior art two-layer materials. Additional composite layers can also be used, with a layer of the intermediate alloy as described herein placed between each successive pair of the 3000 and 4000 series alloy layers. One typical configuration is composed of a 3003 core, clad each side with 4104 alloy sheets and with a 4343 intermediate alloy sheet on either side of the core between the core and each cladding sheet.
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申请公布号 |
US4489140(A) |
申请公布日期 |
1984.12.18 |
申请号 |
US19820391768 |
申请日期 |
1982.06.24 |
申请人 |
ATLANTIC RICHFIELD COMPANY |
发明人 |
PULLIAM, DANIEL L.;EVANS, JOHN A.;WILBUR, DAVID L.;FOX, ROBERT D. |
分类号 |
B32B15/20;B23K35/02;B23K35/28;(IPC1-7):B32B15/20 |
主分类号 |
B32B15/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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