J4酸洗板表面线裂缺陷原因分析与控制措施

摘要

Aiming at J4 pickled sheet surface crack failure and through metallographic analysis, SEM detection and energy spectrum analysis, failure cause has been found, which was incomplete reparation and grinding of continuous casting blank failure.By means of data statistical analysis, parameters have been optimized, such as Cr and Ni equiva-lence ratio, pouring temperature and pulling rate, these measures have decreased failure scale and improved economic benefit.%针对J4酸洗板线裂缺陷，通过金相分析、扫描电镜检测和能谱分析，找出了产生缺陷的原因是连铸坯缺陷修磨不彻底。通过数据统计分析的手段优化了铬镍当量比、浇注温度、拉速等参数，降低了缺陷比例，提高了经济效益。