发明名称 |
Electrical contact for use in a circuit breaker and a method of manufacturing thereof |
摘要 |
An electrical contact for use in an electrical switching device is provided having low contact resistance, high wear resistance and high anti-weld characteristics. The contact includes a material composition of between 0.2 and 8% by weight Gr, between 10 and 90% by weight W and the remaining mixture consisting of Ag. The contact is manufactured using a process which yields a unique microstructure characterized by not having an interconnected Gr network around the Ag thereby providing a strong Ag to Ag bond. This process includes the steps of adding the appropriate amounts of Ag, W and Gr powder material together, blending together under low shear conditions to provide a homogenous powder mixture while prohibiting the Gr from smearing onto the Ag, pressing the material mixture to form a contact, and then sintering and coining the contact.
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申请公布号 |
US5831186(A) |
申请公布日期 |
1998.11.03 |
申请号 |
US19960626706 |
申请日期 |
1996.04.01 |
申请人 |
SQUARE D COMPANY |
发明人 |
OSWOOD, JON W.;BODIN, JAMES P.;SIEBELS, RANDY L.;WEHR, EUGENE W. |
分类号 |
H01H1/023;H01H1/025;H01H1/027;(IPC1-7):B22F3/12;B22F5/00 |
主分类号 |
H01H1/023 |
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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