Dynamic Soft Reduction Technology for 360mm×450mm Bloom Caster

Chen Yong; Xiao Mingfu; Wu Guorong

Volume 31 Issue 1

Jan. 2010

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Chen Yong, Xiao Mingfu, Wu Guorong. Dynamic Soft Reduction Technology for 360mm×450mm Bloom Caster[J]. IRON STEEL VANADIUM TITANIUM, 2010, 31(1): 62-68.

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Chen Yong, Xiao Mingfu, Wu Guorong. Dynamic Soft Reduction Technology for 360mm×450mm Bloom Caster[J]. IRON STEEL VANADIUM TITANIUM, 2010, 31(1): 62-68.

Chen Yong, Xiao Mingfu, Wu Guorong. Dynamic Soft Reduction Technology for 360mm×450mm Bloom Caster[J]. IRON STEEL VANADIUM TITANIUM, 2010, 31(1): 62-68.

Citation:

Chen Yong, Xiao Mingfu, Wu Guorong. Dynamic Soft Reduction Technology for 360mm×450mm Bloom Caster[J]. IRON STEEL VANADIUM TITANIUM, 2010, 31(1): 62-68.

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Dynamic Soft Reduction Technology for 360mm×450mm Bloom Caster

1. Pangang Group Research Institute Co., Ltd., Chengdu 611731, Sichuan, China;
2. Vanadium Recovery & Steelmaking Plant, Panzhihua Steel & Vanadium Co., Ltd., Panzhihua 617062, Sichuan, China

Received Date: 2009-01-23

Abstract

Abstract

The dynamic soft reduction technology for 360 mm×450 mm bloom caster and its application results at PISCO (Panzhihua Iron & Steel Co.) were presented.Experiment for contrasting process with or without soft reduction for bloom was investigated, in order to analyze the influence of the soft reduction on internal quality of bloom, such as center looseness and central segregation.The operation shows that after applying the soft reduction to bloom of alloy steel, the ratio of center looseness which is ≤ 1.0 increases from 66.67% to 85.71%, central segregation which is ≤ 1.0 is increases from 94.44% to 100%, central shrinkage cavity which is free increases from 88.89% to 96.42%, and central segregation index of carbon decreases from mean value of 1.15 to 1.05.These results have provided important technology supports for PISCO to optimize the steel product structure, and to improve the production of high quality, property, and value added products.
- bloom continuous casting,
- dynamic soft reduction,
- alloy steel,
- certer looseness,
- central segregation,
- central shrinkage cavity

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