现代合金钢大方坯连铸机设计特点及生产实践

doi:10.13228/j.boyuan.issn0449-749x.20180177

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Abstract Capital Engineering and Research Incorporation Limited devotes itself to the independent design and independent innovation of the localization bloom caster. For a long time，breakthroughs have been made in the research of key technologies for improving the quality of bloom. The core technology and the key equipment of the 6-strand bloom caster which independently designed by Capital Engineering and Research Incorporation Limited Company were introduced. The design features of key technologies to ensure the quality of the bloom were systematically described. The application of the electromagnetic stirring，the soft reduction and the hard reduction in the improvement of the inner quality of the bloom were expatiated respectively. The practical metallurgical effect of the typical high carbon grinding ball steel was introduced in detail，and the development trend of continuous casting technologies for the bloom production was pointed out. Production practices showed that： at a given speed，ensuring the reasonable position of the final stirring，the reasonable soft reduction and the reasonable hard reduction，the optimized stirring and reduction process parameters could significantly reduce the center segregation and "V" segregation of high carbon steel，improve the center shrinkage and eliminate the center porosity. During the 310 mm×360 mm typical steel BU（w（C）＝1%） casting process，at the speed of 0.5 m/min，the carbon segregation index along the thickness direction was between 0.93-1.08，and the carbon segregation index along the longitudinal direction was between 0.95-1.09. According to the industry standard （YB/T 4002—2013），the center shrinkage no less than grade 1.

Key words： bloom caster grinding ball steel electromagnetic stirring soft reduction hard reduction

Received: 03 May 2018 Published: 24 December 2018

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	Articles by authors
	WU Guo-Qiang
	QIU Meng-Gang
	DAI Zong-Ling
	CHEN Wei-Jiang
	ZHANG Wen-Yong

Cite this article:

WU Guo-Qiang,QIU Meng-Gang,DAI Zong-Ling等. Design features and production practice of modern alloy steel bloom caster[J]. Iron and Steel, 2018, 53(12): 54-61.

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http://www.chinamet.cn/Jweb_gt/EN/10.13228/j.boyuan.issn0449-749x.20180177 OR http://www.chinamet.cn/Jweb_gt/EN/Y2018/V53/I12/54

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