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公开(公告)号：US20070289350A1
公开(公告)日：2007-12-20
申请号：US11755520
申请日：2007-05-30
申请人： Hitoshi Kushida , Osamu Ishigami , Norio Okochi , Shoji Miyazaki
发明人： Hitoshi Kushida , Osamu Ishigami , Norio Okochi , Shoji Miyazaki
CPC分类号： B21C1/00
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.
摘要翻译： 碳含量为0.30〜0.60％的圆钢棒通过冷加工加工，形成用于形成齿圈的扁线。 冷加工过程通过至少一个冷轧或冷轧辊拉伸步骤和至少一个双向或四向轧制步骤形成半成品扁线。 半成品扁线通过拉丝模具进行模拉加工，在冷加工工序的最后阶段得到成品扁线。 冷加工过程减少了总面积减少65％或以下的圆钢棒。
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公开(公告)号：US08448488B2
公开(公告)日：2013-05-28
申请号：US11755520
申请日：2007-05-30
申请人： Hitoshi Kushida , Osamu Ishigami , Norio Okochi , Shoji Miyazaki
发明人： Hitoshi Kushida , Osamu Ishigami , Norio Okochi , Shoji Miyazaki
CPC分类号： B21C1/00
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.
摘要翻译： 碳含量为0.30〜0.60％的圆钢棒通过冷加工加工，形成用于形成齿圈的扁线。 冷加工过程通过至少一个冷轧或冷轧辊拉伸步骤和至少一个双向或四向轧制步骤形成半成品扁线。 半成品扁线通过拉丝模具进行模拉加工，在冷加工工序的最后阶段得到成品扁线。 冷加工过程减少了总面积减少65％或以下的圆钢棒。
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