Effect of microalloy and rolling process on internal quality and austenitic grain size of 80MnCr high carbon grind-ing ball steel for large size rolling ball by Ti and Al cost-effective micro-alloying elements with large reduction in rough roll-ing stage and slow cooling after rolling.The results show that increasing reduction in rough rolling stage and optimizing slow cooling process after rolling have a better effect on macrostructure and quality rate of ultrasonic testing,especially quality rate of ultrasonic testing,the quality rate is increased from 90.5％ to 100％. The austenitic grain size is further refined by microalloy of Ti and Al with large reduction in rough rolling stage,and the austenitic grain size grade is refined from 6 to 7.
关键词
高碳磨球钢80MnCr/轧制工艺/奥氏体晶粒度/微合金化
Key words
high carbon grinding ball steel 80MnCr/rolling process/austenitic grain size/microalloy
维普
万方数据