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采用金相、电镜、力学和化学分析以及相关的工艺技术,系统地分析了“Z”型型钢出现的表面裂纹缺陷。结果表明,型钢腿部边缘裂纹起源于连铸坯角部裂纹。
The surface crack defects appeared in “Z” steel were analyzed systematically by means of metallographic, electron microscope, mechanical and chemical analysis and related technology. The results show that the edge of the profile crack originated in the corner crack.