大规格圆钢质量分析和控制

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。

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

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.