摘要
制定了TBM(隧道掘进机)刀圈用DC53钢的热处理工艺:550℃×30 min、850℃×30 min预热→970/1000/1030/1060/1090℃×20 min淬火(60℃油淬)→550℃×1 h×2次回火。对比分析了不同温度淬火后的金相组织、晶粒度、硬度以及回火后的冲击韧度。结果表明,在1000~1030℃淬火,淬火马氏体组织较好,质量较高,综合力学性能最佳。结果能为DC53钢刀圈淬火工艺的优化提供参考。
The heat treatment process of DC53 steel for TBM （tunnel boring machine） cutter ring was constituted. It was preheating of 550 ℃ ×30 min/850 ℃ ×30 min---,quenching （60℃ oil quenching） of 970/1000/1030/1060/1090 ℃ ×20 min---- tempering of 550℃×1 h×2 times. The microstructure, the grain size and the hardness after quenching at different temperatures and the impact toughness after tempering were contrasted and analyzed. The results show that when quenching temperature is 1000-1030℃, the quenched martensite microstructure is better, the quality is higher, and the comprehensive mechanical properties are the best. The results can provide a reference for the optimization of quenching process of DC53 steel cutter rings.
作者
陈欢
张银霞
郜伟
王栋
刘治华
CHEN Huan ZHANG Yinxia GAO Wei WANG Dong LIU Zhihua(Henan Key Engineering Laboratory of Anti-fatigue Manufacturing Technology, Zhengzhou University, Zhengzhou 450001, China Zhumadian CIMC Huajun Vehicle Co., Ltd., Zhumadian 463000, China)
出处
《热加工工艺》
CSCD
北大核心
2017年第20期208-210,213,共4页
Hot Working Technology
基金
国家863计划项目(2012AA041801)
河南省重点科技攻关项目(152102210045)
河南省教育厅科学技术研究重点项目(14A460001)
关键词
TBM
刀圈
DC53钢
淬火
TBM （tunnel boring machine）
cutter rings
DC53 steel
quenching
