铅浴淬火工艺对70钢丝组织和性能的影响  

Effect of Patenting Process on Structure and Properties of 70 Steel Wire

作　　者：董述峰[1] 赵刚[1] 叶传龙[1] 鲍思前[1] 刘建兵 李俊弘 刘小平 

机构地区：[1]武汉科技大学材料与冶金学院,武汉430081 [2]湖南湘潭钢铁公司钢丝绳厂,湘潭411101

出　　处：《特殊钢》2011年第2期60-62,共3页Special Steel

摘　　要：研究了900℃均热+500℃铅浴54 s空冷处理对70钢(0.67%～0.75%C)Φ5.5 mm热轧钢丝经38.9%压缩率拉拔的冷拔钢丝组织和性能的影响。结果表明,500℃铅浴等温处理,该钢过冷奥氏体转变的孕育和转变时间最短,该钢丝抗拉强度提高了21.4%,伸长率提高9.5%,为随后通过细拉工艺进一步提高钢丝的综合力学性能建立了基础。Effect of 900 ℃ soaking ＋ 500 ℃ patenting for 54 s, air cooling treatment on structure and properties of cold drawn wire of 70 steel （0. 67% -0. 75% C） with 38.9% reduction from qb5.5 mm hot rolled wire has been studied. Results show that with 500 ℃ patenting treatment the inoculation and transformation time of under-cooling austenite of the steel is shortest, the tensile strength and elongation of steel wire increase respectively by 21.4% and by 9.5% to establish the foundation for further increasing the comprehensive mechanical properties of steel wire by finishing fine drawing process.

关 键 词：70钢丝 铅浴淬火 组织 性能 

分 类 号：TG162.85[金属学及工艺—热处理]