大规格圆钢质量分析和控制

ANALYSIS AND CONTROL OF QUALITY FOR ROUND STEEL IN LARGE SECTION SIZE

针对湘钢棒材厂生产大规格圆钢出现的表面质量问题,重点介绍了在成品轧机后采用U形辊道和立活套替换棍道;冷床输入辊道采用镶WT合金套;增设高压水除鳞装置;中间轧件尺寸精度控制等措施,成功的解决了大规格圆钢表面擦伤、"麻面"、尺寸超差等表面质量问题,产品质量显著提高。

With reference to the surface problems that occur to the round bars in large section size during the rolling operation, the article describes the alternative changing of U-shaped roller way and vertical loop roller way after finishing mill. The ingoing roller way of cooling bed here is equipped with circles mounted inside WT alloy loop and added a high pressure water descaler; and actions has been taken for the precisely control of intermediate stocks, which diminishes the problems involved in scratches and tiny pits and out-of-tolerance on the surface of large section sized stocks. Therefore, the high quality of the products will be improved remarkably.