发明名称 |
Method for producing steel component |
摘要 |
A method for producing a steel component by performing the treatments of the following sequentially steps 1 and 2 to a steel material containing, by mass %, C: 0.15 to 0.25%, Si: 0.01 to 0.10%, Mn: 0.50 to 0.80%, S: 0.003 to 0.030%, Cr: 0.80 to 1.20%, Mo: 0.30 to 0.45%, Al: 0.015 to 0.050%, and N: 0.010 to 0.025%, wherein Cr/Mn is 1.3 to 2.4, the balance being Fe and impurities, and contents of P and O among the impurities are P: not more than 0.010%, and O: not more than 0.0020%:
step 1: a treatment which holds the steel material at a temperature of 850 to 1000° C. in a carburizing atmosphere or carbonitriding atmosphere, andstep 2: a treatment which quenches the carburized or carbonitrided steel material, by using quenching oil having a temperature of 40 to 80° C. and a kinetic viscosity of 20 to 25 mm2/s at 40° C. |
申请公布号 |
US9410232(B2) |
申请公布日期 |
2016.08.09 |
申请号 |
US201214352829 |
申请日期 |
2012.10.31 |
申请人 |
NIPPON STEEL & SUMITOMO METAL CORPORATION;HONDA MOTOR CO., LTD. |
发明人 |
Horimoto Masayuki;Imataka Hideki;Nakaoka Masaomi;Ninomiya Akihito;Okada Yoshinari |
分类号 |
C23C8/22;C23C8/32;C23C8/80;C21D9/28;C21D9/32;C21D1/06;C21D1/58;C22C38/00;C22C38/22;C22C38/26;C21D9/30;C22C38/02;C22C38/04;C22C38/06;F16H55/34;F16H55/06 |
主分类号 |
C23C8/22 |
代理机构 |
Clark & Brody |
代理人 |
Clark & Brody |
主权项 |
1. A method for producing a steel component by performing the treatments of the following sequentially steps 1 and 2 to a steel material containing, by mass %,
C: 0.15 to 0.25%, Si: 0.01 to 0.10%, Mn: 0.50 to 0.80%, S: 0.003 to 0.030%, Cr: 0.80 to 1.20%, Mo: 0.30 to 0.45%, Al: 0.015 to 0.050%, and N: 0.010 to 0.025%, wherein fn represented by Formula (1) shown below is 1.3 to 2.4, the balance being Fe and impurities, and contents of P and O among the impurities are P: not more than 0.010%, and O: not more than 0.0020%: step 1: a treatment which holds the steel material at a temperature of 850 to 1000° C. in a carburizing atmosphere or carbonitriding atmosphere, and step 2: a treatment which quenches the carburized or carbonitrided steel material, by using quenching oil having a temperature of 40 to 80° C. and a kinetic viscosity of 20 to 25 mm2/s at 40° C.;
fn=Cr/Mn (1) where, Cr and Mn in Formula (1) represent the content of each element in mass %. |
地址 |
Tokyo JP |