预应力钢绞线用SWRH82B盘条拉拔断裂原因分析  

Cause analysis of drawing fracture of SWRH82B wire rod for prestressed steel strand

作　　者：严士兴 徐亮 Yan Shixing;Xu Liang(Jiangyin Fasten Iron and Steel Products Co.,Ltd.,Jiangyin 214445,China)

机构地区：[1]江阴法尔胜钢铁制品有限公司,江苏江阴214445

出　　处：《金属制品》2021年第5期31-34,共4页Metal Products

摘　　要：SWRH82B盘条从13.0 mm拉拔至5.06 mm出现杯锥状断裂。对断裂试样进行化学成分及断口组织形貌检测分析。研究结果表明,断裂源都在钢丝心部产生,并且心部大部分有异常组织,主要为网状渗碳体或条带状马氏体组织,该异常组织是造成钢丝拉拔过程中杯锥状断裂的主要原因。Cup-cone fracture occurred in drawing process of SWRH82B wire rod from 13.0 mm to 5.06 mm.The chemical composition and fracture morphology of fracture sample were tested and analyzed.Results show that the fracture source is produced in core of steel wire,and most of core has abnormal structure.The main structure is net cementite or strip martensite,the abnormal structure is main cause of cup-cone fracture in process of wire drawing.

关 键 词：SWRH82B 盘条 钢绞线 网状渗碳体 杯锥状断裂 异常组织 

分 类 号：TG356[金属学及工艺—金属压力加工]