基于组织和结构调控9CrV钢大尺寸活塞性能的优化

王磊, 张博, 张宝燕, 刘杨, 宋秀, 李永胜

Properties Optimization of 9CrV Steel for Large Piston Based on Microstructure and Structure Control

WANG Lei, ZHANG Bo, ZHANG Baoyan, LIU Yang, SONG Xiu, LI Yongsheng

表2 9CrV钢的热处理参数

Table 2 Heat treatment parameters for the 9CrV steel

No. Quenching temperature / ℃ Quenching heating and holding time / h Salt bath temperature / ℃ Salt bath insulation time / h Tempering heating temperature / ℃ Tempering holding time / h Secondary tempering heating temperature / ℃ Secondary tempering holding time / h 1# 850 5 230 4 230 4 - - 2# 800 5 230 4 400 4 - - 3# 800 5 230 4 230 4 400 4