Development of Ultra-Low Oxygen Automobile Gear Steel  

作　　者：CHEN Tian-ming1, YANG Su-bo1, ZHAO Ke-wen1,2, WANG Xin-hua2, ZENG Jian-hua1, CHEN Yong1, CHEN Liang1, PAN Hong1 (1. PanGang Group Research Institute Co., Ltd., Chengdu 611731, Sichuan, China 2. Metallurgy and Ecological Engineering School, University of Science and Technology Beijing, Beijing 100083, China) 

出　　处：《Journal of Iron and Steel Research International》2011年第S2期406-410,共5页

摘　　要：In view of process conditions of Vanadium Recovery and Steelmaking Plant, PanGang Group Panzhihua steel and Vanadium Co.,Ltd., and on the basis of making choice of a reasonable deoxidization process, some measures have been taken to the development of automobile gear steel (20CrMoH) such as the pre-refining technology during converter tapping, "white slag" refining in LF, RH Vacuum treatment, and even protective casting technology. Also different and suitable models of argon blowing from bottom of ladle were adopted in the platform after converter, LF refining and calcium treatment. Test results show that the high cleanness 20CrMoH gear steel slab with T[O] ≤15×10-6(The average T[O] is 11.8×10-6) could be obtained through all these measures.In view of process conditions of Vanadium Recovery and Steelmaking Plant, PanGang Group Panzhihua steel and Vanadium Co.,Ltd., and on the basis of making choice of a reasonable deoxidization process, some measures have been taken to the development of automobile gear steel (20CrMoH) such as the pre-refining technology during converter tapping, "white slag" refining in LF, RH Vacuum treatment, and even protective casting technology. Also different and suitable models of argon blowing from bottom of ladle were adopted in the platform after converter, LF refining and calcium treatment. Test results show that the high cleanness 20CrMoH gear steel slab with T[O] ≤15×10-6(The average T[O] is 11.8×10-6) could be obtained through all these measures.

关 键 词：automobile gear steel CONVERTER bloom continuous casting deoxidizing composition of ladle slag 

分 类 号：TF762[冶金工程—钢铁冶金]