热轧管坯钢表面裂纹原因分析

Reason Analysis on the Surface Cracks of Hot-rolled Tube Billet

通过棒材表面酸洗、氮氧分析、扫描电镜能谱仪和金相显微镜等手段，对特钢新区所生产MSL-1热扎管坯钢的表面裂纹进行观察、检验，研究了棒材在生产过程中产生表面裂纹的原因，并采取了相应措施.

By bars＂ surface pickling, nitrogen/oxygen analysis, scanning electron microscopy and metallographic microscope etc. , the observation and inspection about the surface cracks of hot-rolled tube billet MSL-1 produced in the new district of special steel plant were carried out, the reasons leading the surface cracks of bars in the production process were analyzed, and the corresponding measures were taken.