发明名称 |
Flat wire manufacturing method of manufacturing flat wire for ring gear |
摘要 |
A round steel rod having a carbon content between 0.30 and 0.60% is processed by a cold working process to form a flat wire for forming a ring gear. The cold working process forms a semifinished flat wire by at least one cold rolling or cold roller drawing step and at least one two-way or four-way rolling step. The semifinished flat wire is processed by die drawing using a drawing die to obtain a finished flat wire in a last stage of the cold working process. The cold working process reduces the round steel rod at a total area reduction of 65% or below.
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申请公布号 |
US8448488(B2) |
申请公布日期 |
2013.05.28 |
申请号 |
US20070755520 |
申请日期 |
2007.05.30 |
申请人 |
KUSHIDA HITOSHI;ISHIGAMI OSAMU;OKOCHI NORIO;MIYAZAKI SHOJI;KOBE STEEL, LTD. |
发明人 |
KUSHIDA HITOSHI;ISHIGAMI OSAMU;OKOCHI NORIO;MIYAZAKI SHOJI |
分类号 |
B21B23/00;B21C1/04;B21F99/00 |
主分类号 |
B21B23/00 |
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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