圆钢剪切缺陷原因分析及改进措施

Analysis of Cutting Defects of Round Steel and Improvement Measures

韶钢中棒产线主要生产D20~80 mm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.文章系统地对缺陷产生原因进行了分析,重点研究Cr Mo系列圆钢剪切后开裂的原因,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,目前已满足客户质量的要求.

The round bar products with the sizes of D20 - 80 mm are mainly produced by the medium-size bar rolling mill, when the bars are cut, they are easy to cause some defects such as burrs,tear, center pits, flattening, and cutting cracks. In this paper,we will systematically analyze the causes of defects and mainly study the cutting defects on steels of CrMo series. Finally, according to the different defects, the relevant preventive measures are formulated which achieved remarkable resuits. Through continuous improvement of cutting process, the quality is being improved step by step which can meet the quality requirements of all customers.