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1. 发明专利

JP2010001527A Gear component 有权
标题翻译：齿轮组件
公开(公告)号：JP2010001527A
公开(公告)日：2010-01-07
申请号：JP2008161196
申请日：2008-06-20
申请人： Daido Steel Co Ltd , Nissan Motor Co Ltd , 大同特殊鋼株式会社 , 日産自動車株式会社
发明人： IGAWA ERI , MIYAZAKI TAKAHIRO , KOGANEZAWA TAIICHI , KIKUCHI KAZUMASA , IWATA NORIYUKI , ASANO SHUNEI
IPC分类号： C22C38/00 , C21D1/06 , C21D9/32 , C22C38/38 , C22C38/58 , F16H55/06
摘要： PROBLEM TO BE SOLVED: To provide a gear component which combines dedendum strength with tooth flank strength.
SOLUTION: The gear component satisfying the following inequalities (1) and (2) is manufactured by forming case-hardening steel into a prescribed gear shape, then subjecting the steel to carburizing treatment, the case-hardening steel having a composition comprising 0.10 to 0.40% C, ≤1.50% Si, 0.30 to 1.80% Mn, 0.30 to 1.50% Cr, ≤0.80% Mo, ≤0.05% Ti, ≤0.05% Al, ≤0.010% N, ≤0.10% Nb, ≤0.020% P, ≤0.020% S and 0.0005 to 0.0035% B, and the balance Fe with inevitable impurities. Here, the inequality (1) is: the dedendum part: (553.53×S mass%)+(34.36×effective hardened layer depth mm)-(0.16×core part hardness HV)+(123.86×surface layer C concentration%)≤52, and the inequality (2) is: the tooth flank part: (0.001×core part hardness HV)+(0.037×whole hardened layer depth mm)≥0.460.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供将齿根强度与齿面强度组合的齿轮部件。解决方案：通过将表面硬化钢成形为规定的齿轮形状，然后对钢进行渗碳处理来制造满足以下不等式（1）和（2）的齿轮部件，其中组合物包括 0.10〜0.40％C，≤1.50％Si，0.30〜1.80％Mn，0.30〜1.50％Cr，≤0.80％Mo，≤0.05％Ti，≤0.05％Al，≤0.010％N，≤0.10％Nb，≤0.020 ％P，≤0.020％S，0.0005〜0.0035％B，余量为Fe与不可避免的杂质。这里，不等式（1）是：本体部（553.53×S质量％）+（34.36×有效硬化层深度mm） - （0.16×芯部硬度HV）+（123.86×表面层C浓度％）≤ 52，不等式（2）是：齿面部（0.001×芯部硬度HV）+（0.037×整体硬化层深度mm）≥0.460。版权所有（C）2010，JPO＆INPIT

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