大规格轴承钢棒材轧制工艺优化  

Large-size Bearing Steel Bar Rolling Process Optimization

作　　者：汪盼盼 唐立志 隋凤利 WANG Panpan;TANG Lizhi;SUI Fengli(Anhui University of Technology,School of Metallurgical Engineering,A nhui,Maanshan 243032,China)

机构地区：[1]安徽工业大学冶金工程学院,安徽马鞍山243032

出　　处：《金属材料与冶金工程》2021年第5期39-44,共6页Metal Materials and Metallurgy Engineering

摘　　要：本文以轴承钢热连轧生产线上GCr15钢的热连轧过程为研究对象,利用有限元仿真模拟软件MSC.MARC构建了坯型断面为250×300的GCr15钢五连轧过程中的三维热力耦合有限元模型。通过控制初轧温度以及初轧速度的变化来研究轧件在热连轧过程中的等效塑性应变以及轧制力的变化规律。模拟结果表明:当轧件的开轧温度为1050℃、初轧速度为0.19 m/s时,轧制坯料的金属流动较为均匀、等效应变分布较为均匀,并且轧制力较小;在此轧制工艺下可以有效改善产品的组织性能,提高成品质量,而且能够延长轧机使用寿命。This paper takes the hot rolling process of Large-size bearing steel GCr15 as the research object,and uses the finite element simulation software MSC.MARC to construct an finite element model based on the three-dimensional thermal-mechanical coupling of the GCr15 steel with a blank section of 250×300 in the five rollings process.By controlling the change of the initial rolling temperature and initial rolling speed,the equivalent plastic strain and the change law of the rolling force of the rolled piece in the hot rolling process are studied.The simulation results show that when initial rolling temperature is 1050℃and the initial rolling speed is 0.19 m/s,the metal flow of the rolled billet is more uniform,the equivalent strain distribution is more uniform,and the rolling force is small.The rolling process can effectively improve the structure and performance of the product,improve the quality of the finished product,and extend the service life of the rolling mill.

关 键 词：大规格轴承钢 热连轧 初轧温度 初轧速度 有限元模型 

分 类 号：TG335.4[金属学及工艺—金属压力加工]