U75VHH热处理钢轨研制  

Development of U75VHH Heat Treated Rails

作　　者：蔡洁[1] 鲁素萍[1] 

机构地区：[1]包头钢铁职业技术学院机械系,内蒙古包头014010

出　　处：《包钢科技》2015年第2期24-27,共4页Science & Technology of Baotou Steel

摘　　要：采用离线热处理方式对包钢生产的U75V钢轨进行热处理试验研究。结果表明,热处理后钢轨抗拉强度≥1 230 MPa,伸长率≥10%,踏面硬度≥370 HB,组织无异常,为细珠光体。钢轨其它各项性能稳定,满足预期技术指标要求。In the paper,the rails manufactured with offline heat treatment by Baotou Steel are studied. The results show that the tensile strength of rails after heat treatment is not less than 1 230 MPa,elongation is not less than 10% and surface hardness is not less than 370 HB as well as the microstructure is normal fine pearlite. The performances are stable,which could meet the expected requirements of technical indicators.

关 键 词：钢轨 热处理 硬度 力学性能 

分 类 号：TG156.99[金属学及工艺—热处理]