Determination of Reduction Parameters of Soft Reduction in High Carbon Steel Continuous Casting Blooms
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摘要: 轻压下技术作为改善铸坯偏析的有效措施之一,被广泛应用于高碳钢方坯连铸中,其压下参数的选取对于轻压下技术至关重要。通过理论分析并结合其他厂的生产经验,认为压下位置在中心固相率为0.2～0.8、总压下量为4～8 mm时,轻压下效果最佳。合理地应用轻压下技术,可以有效地减轻铸坯的V型偏析、降低中心碳偏析并改善铸坯的宏观组织。Abstract: Soft reduction technology that is known to be one of the effective ways to minimize segregation is used widely in high carbon steel continuous casting blooms.Determination of reduction parameters is very im- portant to the soft reduction technology.Based on the theoretical analysis and the product experience of some plants,it will be found that an optimum soft reduction zone is solid fraction ranged from 0.2 to 0.8 and the to- tal reduction amount ranged from 4 mm to 8 mm.Optimum application of the soft reduction process will lessen V shape segregation and the center carbon segregation of the bloom and also make a remarkable improvement in the macrostructure of it.
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Key words:
- high carbon steel /
- soft reduction /
- V shape segregation /
- center carbon segregation
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