连铸连轧产品缺陷分析及控制措施

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Defects Analysis and Control Measures of Continuous Casting Product

1. School of Qian'an, North China University of Science & Technology, Tangshan 064400, Hebei, China;
2. Xingtai Iron and Steel Compangy, Xingtai 054027, Hebei, China;
3. College of Metallurgy and Energy, North China University of Science & Technology, Tangshan 063009, Hebei, China

摘要: 针对某钢厂1700线生产初期,产品出现边部裂纹、卷形、边部隆起、氧化铁皮压入等缺陷问题,分析了这些质量缺陷的主要形貌特征及产生的原因。通过对连铸机的结晶器锥度,工作辊间距,层流冷却侧喷及卷曲侧导板机,除鳞系统等设备的调整、优化和改造等措施,有效地降低了缺陷的发生率,提高了产品质量、轧制合格率和成材率,对产品质量控制具有借鉴意义。
- 连铸连轧 /
- 质量缺陷 /
- 边部裂纹 /
- 卷形 /
- 边部隆起 /
- 氧化铁皮压入
Abstract: Quality defects such as edge crack,roll,strip edge uplift,oxide scale indentation usually occurred in the strip produced in a 1700 hot strip line.In order to eliminate these defects,the main morphology characteristics and causes were analyzed.A series of measures had been taken through adjustment,optimization and transformation for the caster mold taper,work roll gap,laminar cooling side spray and curl side guides machine,phosphorus removal systems and so on.All these efforts effectively reduced the incidence of defects and improved product quality and the product yield.
- continuous casting and rolling /
- quality defect /
- edge crack /
- roll /
- strip edge uplift /
- oxide scale indentation