J5不锈钢热轧卷气孔脱皮缺陷的成因分析及预防措施
Cause Analysis and Preventive Measures of Porosity Peeling Defect of J5 Stainless Steel Hot Rolling Coil

本文介绍了热轧卷气孔脱皮缺陷形貌与产生原因，针对产生原因结合公司生产实际情况对发生的气孔脱皮进行分析，发现冶炼原材料潮湿及钢水浇铸温度偏低是影响气孔脱皮的主要因素，因此，通过对冶炼原材料进行烘烤及提高连铸浇铸温度等措施，气孔脱皮缺陷得到明显的改善，J5热轧卷产生气孔脱皮缺陷由1.06%降至0.1%以下，产品质量得到了显著的提升。
This paper introduces the morphology and causes of porosity peeling defect in hot rolling coil. Based on the practical situation of company, the occurrence of porosity peeling is analyzed. It is found that low wet smelting raw materials and molten steel casting temperature are the main factors influencing the porosity peeling. Therefore, by taking measures such as baking of smelting raw material and increasing the continuous casting temperature, the porosity peeling defects have been significantly improved. The stomatal peeling defect of J5 hot rolled coil was reduced from 1.06% to less than 0.1%, and the product quality was improved significantly.