摘要
介绍了锻造后GGr15钢的一套完整热处理工艺方案,其工艺过程为：1）预先热处理,780℃球化退火0.5h,炉冷至659℃后出炉空冷,710℃等温退火710℃,保温2h,空冷;2）最终热处理,840℃淬火0.5h,出炉,机油冷却,油温30~60℃,150℃回火2h,空冷,120℃补充回火3h,空冷。对热处理后试验用钢的硬度以及显微组织进行分析可知,其硬度〉63HRC,达到了使用要求。
The paper introduced a set of heat treatment process on the structure and hardness of GGr15 steel after forging.The process is that first pre-heat treating including sorbide heat treatment process in air-cooling solution treatment on780℃for 0.5hafter cooling for 659℃,isothermal anneal in air-cooling solution treatment on 710℃for 2h.,and then eventually treating including quenching about oil-cooling（oil temperature is 30~60℃）solution on 840℃for 0.5haged condition.tempering in air-cooling solution treatment on 150 ℃ for 2h,at last,additional tempering is air-cooling solution treatment on 120℃for 3h.The hardness of stainless steels was markedly increased after heat treatment process.The hardness of the GGr15 bearing steel reached above 63 HRC,which met the requirements of usage.
出处
《新技术新工艺》
2014年第9期65-68,共4页
New Technology & New Process
