10B21冷镦钢线材表面翘皮缺陷成因分析  

Cause of surface peeling defects in 10B21 cold heading steel wire

作　　者：孙江波 刘旋 翟晓毅 孙彩凤 SUN Jiang-bo;LIU Xuan;ZHAI Xiao-yi;SUN Cai-feng(Han-dan Branch of Hebei Iron and Steel Co.,Ltd.,Technology Center,Handan 056015,Hebei,China;North China University of Science and Technology,College of Metallurgy and Energy,Tangshan 063210,Hebei,China)

机构地区：[1]河钢股份有限公司邯郸分公司技术中心,河北邯郸056015 [2]华北理工大学冶金与能源学院,河北唐山063210

出　　处：《连铸》2018年第5期39-43,共5页Continuous Casting

摘　　要：研究了10B21含硼冷镦钢线材表面翘皮缺陷的形成原因,借助光学显微镜及SEM对缺陷横截面的形貌、组织、成分等进行了检测,利用氮氧分析仪对成品线材的气体质量分数进行检验,对缺陷形成机制进行了分析,认为缺陷为连铸方坯表面角部横裂纹在轧制过程中形成的褶皱。通过调整10B21含硼冷镦钢的入炉料结构及对生产过程加强控制,进而控制钢中氮质量分数,可有效的避免线材表面翘皮缺陷的产生。The surface peeling defects of 10 B21 boron-bearing cold heading steel wire were studied.The optical microscope and SEM were used to examine the morphology,structure,and composition of the cross-section ofdefects,and the gas content of the finished wire was examined by a nitrogen oxide analyzer.The formation mechanism of the defect is analyzed,it is considered that the defect is a wrinkle formed during the rolling of the corner cross crack on the continuous casting billet.By adjusting the charging structure of 10 B21 boron-containing cold heading steel and strengthening the control of the production process,then controlling the nitrogen content in the steel,and the occurrence of warpage defects on the wire surface can be effectively avoided.

关 键 词：10B21 气体质量分数 BN 表面缺陷 

分 类 号：TG142.1[一般工业技术—材料科学与工程] TG335[金属学及工艺—金属材料]