发明名称 |
Bearing race member and method of fabrication |
摘要 |
A bearing race member composed of steel containing 0.60 to 0.85% carbon by weight, 0.5 to 1.0% by weight in a single content or total contents of Si and Al, and 13 ppm or less oxygen, wherein said bearing race member is quenched and subsequently tempered to contain 15% or less retained austenite therein. Even though basically made of structural carbon steel, the bearing race member has a long life equal to that of high-carbon chromium bearing steel and is superior in dimensional stability and crack fatigue strength.
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申请公布号 |
US4992111(A) |
申请公布日期 |
1991.02.12 |
申请号 |
US19890391147 |
申请日期 |
1989.08.08 |
申请人 |
N.T.N. CORPORATION |
发明人 |
YAMADA, HIROSHI;NAKAJIMA, HIROKAZU;TSUSHIMA, NORIYUKI;HAMAOKA, HIROTSUGU |
分类号 |
C21D9/40;C22C38/00;C22C38/06;F16C33/62 |
主分类号 |
C21D9/40 |
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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