摘要
对S55C钢进行了不同工艺的球化退火处理,研究了所获得的组织和硬度。结果表明,S55C钢经740℃保温5 h,以≤20℃/h的冷速缓冷至700℃保温5 h,再以≤40℃/h的冷速缓冷至680℃保温5 h后空冷,得到的组织为球状珠光体,珠光体球化率≥90%,硬度值165 HBW,符合客户使用要求。
Different spheroidizing annealing processes of the S55 C steel were carried out and the microstructure and hardness were studied.The results show that after holding at 740℃ for 5 h,slowly cooling to 700℃ for 5 h at a cooling rate of ≤20℃/h,and then slowly cooling to 680℃ for 5 h at a cooling rate of ≤40℃/h,and then air cooling,the microstructure of the S55 C steel is spherical pearlite,the spheroidization rate is ≥90%,and the hardness value is 165 HBW,which meet the requirements of the customer.
作者
史啸峰
柳萍
李波
郑文超
李博鹏
裴丹丹
鲁强
Shi Xiaofeng;Liu Ping;Li Bo;Zheng Wenchao;Li Bopeng;Pei Dandan;Lu Qiang(Hubei Key Laboratory of High Quality Special Steel,Daye Special Steel Co.,Ltd.,Huangshi Hubei 435001,China)
出处
《金属热处理》
CAS
CSCD
北大核心
2021年第5期193-195,共3页
Heat Treatment of Metals
关键词
S55C钢
球化退火
球化率
S55C steel
spheroidizing annealing
spheroidization rate
