公开(公告)号：US20120211122A1

公开(公告)日：2012-08-23

申请号：US13415198

申请日：2012-03-08

申请人： Naoyuki SANO ,  Masayuki HORIMOTO ,  Yoshinari OKADA ,  Masaki AMANO ,  Akihito NINOMIYA

发明人： Naoyuki SANO ,  Masayuki HORIMOTO ,  Yoshinari OKADA ,  Masaki AMANO ,  Akihito NINOMIYA

IPC分类号： C23C8/32 ,  C23C8/80

CPC分类号： C23C8/02 ,  C21D1/25 ,  C21D1/74 ,  C21D7/06 ,  C21D9/32 ,  C22C38/02 ,  C22C38/04 ,  C22C38/18 ,  C23C8/22 ,  C23C8/32 ,  C23C8/80

摘要： A method for producing a carbonitrided member comprising the steps of carburizing a steel part having a composition of, by mass percent, C: 0.10 to 0.35%, Si: 0.15 to 1.0%, Mn: 0.30 to 1.0%, Cr: 0.40 to 2.0%, S: 0.05% or less with the balance being Fe and impurities in a carburizing atmosphere of 900 to 950° C. The carburized steel part is carbonitrided in a carbonitriding atmosphere with the temperature of 800 to 900° C. and the nitrogen potential of 0.2 to 0.6%. The carbonitrided steel part is qhenched and then shot peened. The shot peening treatment may be further performed while heating to a temperature not higher than 350° C. or immediately after heating to a temperature not higher than 350° C. After quenching, the shot peening treatment may be further performed after tempering in the temperature range exceeding 250° C. and not higher than 350° C.

摘要翻译： 碳氮共渗构件的制造方法，其特征在于，将以质量％计含有C：0.10〜0.35％，Si：0.15〜1.0％，Mn：0.30〜1.0％，Cr：0.40〜2.0 ％，S：0.05％以下，余量为渗碳气氛中的Fe和杂质为900〜950℃。渗碳钢部分在碳氮共渗气氛中碳氮共混，温度为800〜900℃，氮势 为0.2〜0.6％。 将碳氮共渗钢部分进行复层，然后喷丸硬化。 可以在加热至不高于350℃的温度或加热至不高于350℃的温度之后进一步进行喷丸硬化处理。淬火后，可以在温度回火之后进一步进行喷丸硬化处理 范围超过250℃，不高于350℃