工程机械用15B36Cr圆钢的生产实践

Production Practice of 15B36Cr Round Steel for Construction Machinery

介绍了链轨节用钢15B36Cr的生产工艺流程,通过合理的成分设计、冶炼工艺控制、轧制加热和冷却工艺控制,成功试制出链轨节用钢15B36Cr。通过对产品理化性能指标检测分析表明,夹杂物、脱碳层、低倍组织、化学成分、末端淬透性和晶粒度等指标均满足客户协议要求。其中非金属夹杂物级别均≤1.5级,末端淬透性J1.5 mm位置硬度值为50~56 HRC,J12 mm位置硬度值为40~52 HRC,J15 mm位置硬度值≥30 HRC,抗拉强度为980~1053 MPa,屈服强度为950~1030 MPa,用户使用反馈良好。

The production process of 15B36Cr steel for chain rail link is introduced.Through reasonable composition design,smelting process control,rolling heating and cooling process control,15B36Cr steel for chain rail link issuccessfully trial produced.The product quality analysis shows that the chemical composition,inclusion,decarburized layer,macrostructure,end hardenability value and grain size meet the requirements of the customer agreement.Among them,non-metallic inclusions are≤1.5,hardenability is 50~56 HRC at J1.5 mm,40~52 HRC at J12 mm,≥30 HRC at J15 mm,tensile strength is 980~1053 MPa,yield strength is 950~1030 MPa,and user feedback is good.