圆钢剪切缺陷原因分析及改进措施

ANALYSIS ON SHEAR DEFECT OF ROUND STEEL AND ITS IMPROVEMENT MEASURES

宝钢特钢韶关公司中棒生产线主要生产φ20~φ80mm规格圆钢，圆钢在剪切时容易造成端部毛刺、崩口、中心凹坑、压扁、剪切裂纹等质量缺陷。系统地对缺陷产生原因进行了分析，重点研究CrMo系列圆钢剪切后开裂的原因分析，最终根据不同缺陷针对性地制定了相关的预防措施，并取得了显著的效果。通过不断完善剪切工艺，质量逐步提升，目前已满足所有客户质量要求。

Shaoguan Baosteel Special Steel Co. Ltd. middle production line is mainly used for produce φ20~φ80mm round steel products, when the products is shearing,it is likely to cause burrs,tear,Center pits,flattening,shear crack and other defects. In this paper, we will systematically analyze the causes of defects and mainly studies shear defect of CrMo series steel. Finally, according to the different defects, the relevant preventive measures are formulated and has achieved remarkable results. Through continuous improvement of shear process, the quality step by step improvement, has met the quality requirements of all customers.