取向硅钢热轧酸洗板水纹印缺陷成因分析及对策  

Cause analysis and countermeasures of hydrographic defects in hot rolled pickling plate of oriented silicon Steel

作　　者：熊智威 杨秀枝[1] 王自荣[1] 邹威 XIONG Zhiwei;YANG Xiuzhi;WANG Zirong;ZOU Wei(Technology Center o£Hunan Hualing Lianyuan Iron&Steel Co.,LTD.,Lianyuan 417000,China;Hunan Lingrui Technology Co.,LTD.,Lianyuan 417000,China)

机构地区：[1]湖南华菱涟源钢铁有限公司技术中心,湖南涟源417000 [2]湖南菱瑞科技有限公司,湖南涟源417000

出　　处：《电工钢》2022年第3期17-21,共5页ELECTRICAL STEEL

摘　　要：针对普通取向硅钢二次酸洗过程中产生的热轧酸洗表面水纹印缺陷,采用缺陷微观特征分析、缺陷区能谱元素分析的方法确定了缺陷类型,并根据生产关联性因素分析,确定了产生原因。结果表明:二次酸洗后表面粗糙度差异是水纹印缺陷产生的直接原因;生产关联性分析发现,一次酸洗后缓蚀剂吸附区氧化铁皮剩余量与酸液中缓蚀剂残留的浓度有关。通过采取排空酸槽和循环罐中残留缓蚀剂的酸液、降低酸洗计划初期酸液温度等措施,使酸洗水纹印的缺陷发生率从18.73%降到0%。In view of the water print defects on the surface of common oriented silicon steel during the secondary pickling process,the defect types were determined by means of the analysis of the microcosmic characteristics of the defects and the elemental analysis of the energy spectrum in the defect area,and the causes were determined according to the analysis of the production correlative factors.The results showed that the roughness difference on the surface after secondary pickling was the direct cause of hydrographic defects.Production correlation analysis showed that the residual amount of iron oxide in the adsorbed area of corrosion inhibitor was related to the concentration of corrosion inhibitor in acid solution.The defect rate of the pickling water imprint was reduced from 18.73% to 0% by draining acid tank and circulating tank and reducing acid temperature at the initial stage of pickling plan.

关 键 词：取向硅钢热轧酸洗板 水纹印缺陷 缓蚀剂 表面粗糙度 

分 类 号：TG142.77[一般工业技术—材料科学与工程] TG335.11[金属学及工艺—金属材料]