提高C118冷作模具钢等向性的工艺研究  

PROCESS STUDY ON IMPROVING THE ISOTROPIC PERFORMANCE OF C118 COLD WORKING DIE STEEL

作　　者：米永旺 牛旭斐 张占普 冯英育 Mi Yongwang Niu Xufei Zhang Zhanpu Feng Yingyu(HeYe Special Steel Co. , LTD. , Shi/iazhuang Hebei , 052165 Hebei Engineering and Research Center for HSS Technology, Shijiazhuang, Hebei, 052165)

机构地区：[1]河冶科技股份有限公司,河北石家庄052165 [2]河北省高速工具钢工程技术研究中心,河北石家庄052165

出　　处：《河北冶金》2017年第9期1-4,共4页Hebei Metallurgy

摘　　要：对比分析两种生产工艺生产的模具钢C118的组织性能,确定了C118钢适宜的高温均质化温度为1 220℃,多向锻造是提高锻圆各向等向性的关键技术。采用高温均质化和多向锻造工艺后,模具钢C118冲击韧性横纵比由先前传统工艺的21.8%提升至68%,等向性能明显提高。Through the comparison and analysis of the microstructure and properties of C118 produced by two production processes,the suitable temperature of C118 steel high-temperature homogenization is determined as 1 220 ℃,and the multiaxial forging is the key technology to improve the isotropy on forging circle. The horizontal-to-vertical ratio of impact toughness of C118 steel is increased from 21. 8% with the traditional process to 68% with above process,and the isotropic performance is obviously improved.

关 键 词：C118模具钢 高温均质化 多向锻造 冲击韧性 等向性 

分 类 号：TG142.1[一般工业技术—材料科学与工程]