转炉—大方坯连铸流程试制高铬管坯钢

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Trial Production of High Chromium Tube Steel by Convert-bloom Continuous Casting Process

1. Pangang Group Research Institute Co., Ltd., Chengdu 611731, Sichuan, China;
2. School of Metallurgy and Energy Engineering, Kunming University of science and Technology, Kunming 650093, Yunnan, China;
3. Panzhihua Steel & Vanadium Co., Ltd., Pangang Group, Panzhihua 617022, Sichuan, China

摘要: 针对L80-3Cr高铬管坯钢的成分特点及质量需求,通过采用合理的合金化制度、过程温度制度及连铸关键工艺技术,打通了半钢炼钢条件下LD-LF-RH-Bloom生产该钢种的工艺流程,达到了经济生产的目的。工业试验表明,冶炼过程Cr的平均收得率达98.2%,成品Cr成分控制稳定;圆钢w_T[O]含量为10×10^-6~16×10^-6,平均13.5×10^-6,夹杂物各项评级均 ≤ 1.0级,表面及内部质量良好。
- 高铬钢 /
- 转炉 /
- 半钢炼钢 /
- 大方坯连铸 /
- 铬 /
- 收得率
Abstract: In consideration of the composition characteristics and quality requirements of L80-3Cr high chromium steel,the rational alloying system,temperature system and key technologies of continuous casting process are employed in the development of a full-line operation of LD-LF-RH-Bloom continuous casting on steelmaking with semi-steel,which suggests an economic production of the steel has been realized.The industrial tests show that the average recovery rate of Cr in smelting process is 98.2%,and Cr content in final products is consistent.The T[O] content of rolled products is ranged from 10×10^-6 to 16×10^-6 with an average content of 13.5×10^-6.Various inclusions of the products are no more than 1.0 level.The rolled products have good surface quality and internal quality.
- high chromium steel /
- converter /
- steelmaking with semi-steel /
- bloom continuous casting /
- chromium /
- recovery rate

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