15NiMoSiCr10钢在柴油机渗碳针阀体上的应用研究  

Application Research of 15NiMoSiCr10 Steel on Carburizing Needle Valve Nozzle of a Diesel Engine

作　　者：杨欢 冉启燕 王波 包涛 林文源 周桂锋 余法松 YANG Huan;RAN Qiyan;WANG Bo;BAO Tao;LIN Wenyuan;ZHOU Guifeng;YU Fasong(Key Equipment Technology Center,CNOOC EnerTech Equipment Technology Co.,Ltd.,Shenzhen Co.,Shenzhen 518054,China;Production Department,CNOOC China Ltd.,Shenzhen,Shenzhen 518054,China;Lufeng Oilfield Operation,CNOOC China Ltd.,Shenzhen,Shenzhen 518054,China;Technical Center,Chongqing Hongjiang Machinery Co.,Ltd.,Chongqing 402160,China;National Engineering Laboratory for Marine Power System,Chongqing Hongjiang Machinery Co.,Ltd.,Chongqing 402160,China)

机构地区：[1]中海油能源发展装备技术有限公司深圳分公司关键设备技术中心,广东深圳518054 [2]中海石油(中国)有限公司深圳分公司生产作业部,广东深圳518054 [3]中海石油(中国)有限公司深圳分公司陆丰油田作业区,广东深圳518054 [4]重庆红江机械有限责任公司技术中心,重庆402160 [5]重庆红江机械有限责任公司船舶与海洋工程动力系统国家工程实验室,重庆402160

出　　处：《铸造技术》2020年第4期319-323,共5页Foundry Technology

摘　　要：15NiMoSiCr10是引进用于生产柴油机渗碳针阀体的新钢种。对该钢的化学成分、金相组织以及力学性能等进行了检测分析,探讨了其最佳热处理工艺,并对比研究了15NiMoSiCr10与传统的18CrNi8钢的抗回火稳定性。结果表明,当回火温度为300℃时,15NiMoSiCr10针阀体的座面硬度可达715 HV1(61 HRC),具有高抗回火稳定性,且金相组织良好;15NiMoSiCr10可以满足新型高端柴油机对针阀体材料的使用要求,为针阀体选材开辟了新的方向。The 15NiMoSiCr10 was a new steel used for producing diesel engine carburizing needle valve nozzle.The chemical composition,microstructure and mechanical properties of the steel were tested and analyzed.The optimum heat treatment process was discussed and the tempering stability of 15NiMoSiCr10 and traditional 18CrNi8 steel was compared.The results show that when the tempering temperature is 300℃,the surface hardness of 15NiMoSiCr10 needle valve can reach 715 HV1(61 HRC)with high tempering resistance and good microstructure.15NiMoSiCr10 can meet the requirements of new high-end diesel engine for the use of needle valve material,the needle valve nozzle material open up a new direction.

关 键 词：柴油机 15NiMoSiCr10钢 高抗回火稳定性 渗碳针阀体 

分 类 号：TG142[一般工业技术—材料科学与工程]