-
公开(公告)号:US6093263A
公开(公告)日:2000-07-25
申请号:US104224
申请日:1998-06-25
申请人: Keizo Kobayashi , Kazunori Ishikawa , Kazuhisa Ozaki , Toshihiro Tomino , Mikio Iwase , Hiroshi Kato , Tatsuo Tozuka , Atsushi Tabata , Kagenori Fukumura , Yasuo Hojo , Shoichi Sayo , Hideki Miyata
发明人: Keizo Kobayashi , Kazunori Ishikawa , Kazuhisa Ozaki , Toshihiro Tomino , Mikio Iwase , Hiroshi Kato , Tatsuo Tozuka , Atsushi Tabata , Kagenori Fukumura , Yasuo Hojo , Shoichi Sayo , Hideki Miyata
摘要: A gear having high pitching resistance, sufficient surface hardness, sufficient hardened depth, high abrasion resistance, high breakage resistance, high fatigue resistance, and low gear noises. A material equivalent to JIS-SCM420 is soft nitrided for two hours in a mixture gas containing 45 to 65 volume % of residual NH.sub.3 at a gas temperature of 530 to 565.degree. C., thus producing a compound layer having a hardness equal to or higher than that of the material plus Hv 50 and a thickness of 200 .mu.m or more.
摘要翻译: 具有高俯仰阻力,足够的表面硬度,足够的硬化深度,高耐磨性,高耐断裂性,高抗疲劳性和低齿轮噪声的齿轮。 将等价于JIS-SCM420的材料在530〜565℃的气体温度下,在含有45〜65体积%残留NH 3的混合气体中软氮化2小时,由此生成硬度等于或等于 比材料加上Hv 50,厚度200μm以上。