Scanning Electronic Microscope(SEM)and EDAX were used to analyze the surface defect of mandril for hot rolling steel tube. Appearance and growth of the surface defect were investigated and discussed.
采用扫描电镜及能谱分析对热轧管用失效芯棒的表面缺陷进行分析，探讨了芯棒表面缺陷的产生原因和长大机理。
Scanning Electronic Microscope(SEM)and EDAX were used to analyze the surface defect of mandril for hot rolling steel tube. Appearance and growth of the surface defect were investigated and discussed.
采用扫描电镜及能谱分析对热轧管用失效芯棒的表面缺陷进行分析，探讨了芯棒表面缺陷的产生原因和长大机理。
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