浅谈1#板坯连铸机铸坯质量影响因素和控制措施

Research on the Influence Factors and Control Measures of Slab Quality in Slab Caster No.1

通过连铸坯低倍腐蚀评估铸坯中心偏析、中心疏松等铸坯内部缺陷,反馈铸坯内部质量。从铸机辊缝、动态轻压下、喷嘴、钢水过热度、化学成分等方面研究铸坯内部质量的影响因素和控制措施。工艺优化后连铸低倍合格率上升8.17个百分点,提高了1#连铸机的内部质量。

The internal quality of the slabs is reflected through evaluating the internal defects of the slabs,such as center segregation and center porosity by macro etching. The influence factors and control measures of slab quality were studied in various aspects,such as roll gap,dynamic soft reduction,spray nozzles,overheat of molten steel and chemistry composition. The qualified rate of macro etching increased by 8.17 percent after process optimization,thus the internal quality of the slabs in Slab Caster No.1 was improved.