W12Mo2cr4VRE高速钢是重庆大学试制成功一种新型高速钢,其典型化学成分(%)为:C～0.94,W～11.51、Cr～4.02、Mo～1.98、V～1.80、RE～0.12,用于切削工具性能良好。我厂采用这种钢使用如下的工艺: 由于钢中含稀土元素,热塑性较好,锻造时能承受较大的变形量,不易开裂,由于含碳量较高又含多量的Mo,所以锻造温度稍窄。锻造工艺参数选择为,加热温度儿20～1160℃,开锻温度不低于1070℃,停锻温度900～950℃,平整温度不低于850℃。锻后经坑中缓冷并及时退火。退火工艺退火温度860～870℃、保温 W12Mo2cr4VRE high speed steel is a new type of high speed steel successfully developed by Chongqing University. Its typical chemical composition (%) is C ~ 0.94, W ~ 11.51, Cr ~ 4.02, Mo ~ 1.98, V ~ 1.80 and RE ~ 0.12 for cutting Good tool performance. I plant the use of this steel using the following process: As the steel containing rare earth elements, thermoplastic better, forging can withstand greater deformation, not easy to crack, due to the high carbon content but also contains a large amount of Mo, forging temperature Slightly narrow. Forging process parameters selected, the heating temperature of 20 ~ 1160 ℃, open forging temperature of not less than 1070 ℃, stop forging temperature of 900 ~ 950 ℃, the formation temperature of not less than 850 ℃. Forged by the pit slow cooling and annealing in time. Annealing annealing temperature 860 ~ 870 ℃, insulation