Abstract：The core process and key equipment of special steel bloom caster in a plant was discussed, the key equipment, technical points and process practice of controlling slab quality were expounded, emphatically described the important role of light and heavy reduction process in improving the internal quality of bloom, and introduced in detail the metallurgical effect of the caster in producing typical high carbon steel. The production practice shown that the central segregation of bearing steel can be significantly reduced, the central porosity can be improved and the central shrinkage can be eliminated by determining the reasonable soft and hard reduction interval and reduction process parameters under the condition of keeping the production drawing speed constant. The typical steel GCr15 produced by bloom caster was poured at a constant casting speed, the carbon segregation index of billet was between 0.97-1.06, the proportion of central porosity not greater than 1.0 is 100%, and there was no central shrinkage defect.
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LI Hao, LI Xin, TAO Cheng-gang, WANG Guo-cai. Design characteristics and production practice of bloom caster for special steel. CONTINUOUS CASTING, 2023, 42(2): 99-105.
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