Production Practice of Bearing Steel RH Vacuum Refining to Reduce Inclusions
The source of large particle inclusions in bearing steel and its impact on the performance of bearing steel are analyzed.In view of the production process of bearing steel,the impact of RH vacuum treatment time on the oxygen content and the amount of inclusions in steel was studied through field tests.In view of the change of bottom blowing argon flow and vacuum treatment time in the vacuum refining process,the impact on the bearing steel was studied.The influence of particle inclusions has been studied.The results show that the vacuum treatment time is extended to 25 minutes,and the bottom blowing flow is increased to 80-120 m3/h under the conditions of temperature reduction,which can significantly remove the content of large particles in bearing steel and reduce the oxygen content in steel,it is revealed the key impact factors of vacuum refining on the quality improvement of bearing steel.
万方数据
维普
