发明名称 |
Sintered gear |
摘要 |
Disclosed is a sintered gear composed of a sintered alloy having a metal matrix and pores. The tooth surface (2, 3, 4) of the tooth and the bottom land (5) have a densified layer (11) in which the porosity is reduced to 10% or less from the sintered alloy. The densified layer at the tooth surface is formed with a thickness of 300 to 1,000 microns, and the densified layer at the bottom land is formed with a thickness of 10 to 300 microns. The boundary surface of the densified layer is continuous from the tooth surface side to the bottom land side so as not to have a substantial level difference.
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申请公布号 |
US7556864(B2) |
申请公布日期 |
2009.07.07 |
申请号 |
US20050529866 |
申请日期 |
2005.03.30 |
申请人 |
HITACHI POWDERED METALS CO., LTD.;HONDA GIKEN KOGYO KABUSHIKI KAISHA |
发明人 |
YAMANISHI YUJI;SATO RYOJI;ISHII KEI;ARAKAWA TOMOAKI;YAMADA JYUN-ICHI;TSUTSUI TADAYUKI;FUJIWARA AKIRA |
分类号 |
B22F5/08;F16H55/06;B32B3/02;B32B5/14;B32B5/32;F16H55/02;F16H55/14;F16H55/16;F16H55/30 |
主分类号 |
B22F5/08 |
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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