重轨钢浇次第一炉钢冶金质量的研究

特殊钢 ›› 2010, Vol. 31 ›› Issue (2): 33-34.

重轨钢浇次第一炉钢冶金质量的研究

李峰

包头钢铁集团公司技术中心，包头014010

出版日期:2010-04-01 发布日期:2022-11-16
作者简介:李峰(1971-),男，博士，高级工程师，炼钢工艺研究。

A Study on Metallurgical Quality of First Heat of Heavy Rail Steels during Casting

Li Feng

Technology Center Baotou Iron and Steel Group, Baotou 014010

Published:2010-04-01 Online:2022-11-16

摘要/Abstract

摘要： 对100 t LD-LF-VD-280 mm×380 mm连铸坯流程生产的U71Mn和U75V重轨钢第一炉钢的冶金质量进行了研究。统计结果表明,虽然第一炉钢过热度(21～38℃)较高,但第一炉钢中后半炉的最大氢、氧含量较前半炉分别降低0.2×10^-6和5×10^-6,夹杂物亦降低0.5级,后半炉钢的冶金质量可以满足重轨钢的要求,因此可将后半炉钢由原来的吊车轨改为重轨,该工艺实施后每年重轨钢可增产6万t以上。

关键词: 重轨钢连铸, 第一炉, 冶金质量

Abstract: A study on Metallurgical quality of first heat U71Mn and U75V heavy rail steel produced by 100 t LD-LF- VD-280 mm x 380 mm casting bloom flow sheet has been carried out. Statistic results show that although the overheating extent (21 ~38℃) of first heat liquid is higher, the max hydrogen content, oxygen content in end-half heat of first heat decrease respectively by 0. 2 x 10^-6 and 5 x 10^-6 as compared that in beginning-half heat and the max rating of inclusions also decrease by 0. 5. The metallurgical quality of end-half heat meets the requirements of heavy rail steel, therefore it is available that the end-half heat of first heat liquid can be cast for heavy rail instead of crane rail. As the process is put into practice, the amount of heavy rail steel shall increase more than 60 000 t per year.

Key words: Heavy Rail Steel Casting, First Heat, Metallurgical Quality

李峰. 重轨钢浇次第一炉钢冶金质量的研究[J]. 特殊钢, 2010, 31(2): 33-34.

Li Feng. A Study on Metallurgical Quality of First Heat of Heavy Rail Steels during Casting[J]. Special Steel, 2010, 31(2): 33-34.