高疲劳性能水浴制绳钢丝拉拔性能研究  

Study on drawing performance of high fatigue performance water bath steel wire for rope

作　　者：蒋婷慧 刘红芳 谢学锋 Jiang Tinghui;Liu Hongfang;Xie Xuefeng(Fasten Hopesun Group Co.,Ltd.,Jiangyin 214433,China)

机构地区：[1]法尔胜泓昇集团有限公司科技中心,江苏江阴214433 [2]法尔胜泓昇集团有限公司技术质量中心,江苏江阴214433

出　　处：《金属制品》2021年第4期5-10,共6页Metal Products

基　　金：江苏省科技成果转化专项资金项目,项目编号:BA2020023;江苏省高性能金属线材制品关键技术重点实验室项目,项目编号:BM2016023。

摘　　要：将5.5 mm72A盘条拉拔至0.90 mm,进行水浴淬火+热镀锌处理后,再经过水箱拉拔Ф0.14 mm的制绳钢丝。Ф0.90 mm水浴淬火钢丝具有良好的拉拔性能,内部组织在小应变量情况下,变化不明显;当应变量累计达到0.713时,组织发生了明显变化,索氏体团由不规则形状开始沿着拉拔方向变成细长状;当应变量达到2.562时,索氏体组织沿着拉拔方向呈纤维状。Ф0.14 mm制绳钢丝宏观力学性能达到了铅浴淬火钢丝的水平,疲劳断口呈正常的韧窝断口,疲劳裂纹扩展区约占断口面积的50%。水浴淬火小规格钢丝拉拔高疲劳钢丝绳所需的制绳钢丝符合要求,可以推广应用。Diameter 5.5 mm 72A wire rod was drawn to 0.90 mm,after water bath quenching and hot galvanizing,diameter 0.14 mm steel wire for rope was drawn by water tank wire drawing machine.Diameter 0.90 mm water bath quenching steel wire has good drawing property,change of its internal structure is not obvious under condition of small strain.When cumulative strain reaches 0.713,the structure changes obviously,sorbite cluster starts from irregular shape and becomes elongated along drawing direction,when strain reaches 2.562,the microstructure of sorbite became fiber shape along drawing direction.The macro mechanical properties of diameter 0.14 mm steel wire for rope reaches level of lead bath quenching steel wire.The fatigue fracture is normal dimple fracture,fatigue crack propagation area accounts for about 50%of fracture area.The steel wire for rope needed for drawing high fatigue wire rope with water bath quenching small diameter steel wire can meet requirements and be popularized.

关 键 词：水浴淬火 压缩率 高疲劳 力学性能 索氏体 

分 类 号：TG356.45[金属学及工艺—金属压力加工]