硬线盘条钢拉拔脆断的原因分析  

Analysis on Brittle Fracture During Drawing of Hard Wire Rod Steel

作　　者：李庆丰[1] 向嵩[1] 杨小弟[1] 王永金[1] 王魏韦[1] 

机构地区：[1]贵州大学材料与冶金学院,贵州贵阳550003

出　　处：《现代机械》2009年第2期82-83,87,共3页Modern Machinery

基　　金：贵州省科学技术基金(20082208);贵州大学SRT计划项目资助

摘　　要：硬线盘条钢是生产高强度、低松弛预应力钢丝、钢绞线的重要原料。本文利用金相显微镜、扫描电子显微镜、电子拉伸试验机对盘条显微组织、夹杂物及力学性能进行了研究。结果表明盘条的力学性能随着珠光体增加和珠光体的片层间距的细化不断提高,盘条钢拉拔脆断的原因是钢中存在的夹杂物含量超标。The hard wire rod steel is the important materials, made into high strength, prestressed steel wire and steel stranded wire. In this paper, the microstructure, inclusions and mechanical properties of wire rod were analyzed with metallographic microscope ,SEM and electronic tensile testing machine. The results showed the mechanical properties were improved with the increase of perlite and the decrease of the perlitic interlameUar spacing. The inclusions lead to brittle fracture during drawing.

关 键 词：珠光体 显微组织 夹杂物 力学性能 

分 类 号：TG241[金属学及工艺—铸造]