摘要
55钢镜板直径大,壁薄,技术要求严格,常规毛坯锻后正回火热处理工艺满足不了硬度及硬度均匀性的要求。通过调整生产工艺流程、调控锻件化学成分、合理优化热处理工艺方案等措施,使镜板在粗加工后正回火工艺达到技术条件要求。
The 55 steel mirror plate has large diameter,thin wall and strict technical requirements. The normalizing and tempering heat treatment process after forging the blank cannot meet the requirements of hardness and its uniformity. By adjusting the production process,regulating the chemical composition of forgings and optimizing the heat treatment process,the normalizing and tempering process of the mirror plate after rough machining can meet the technical requirements.
引文
[1]康大韬、叶国斌.大型锻件材料及热处理[M].北京:龙门书局,1998.