P20大型锻造预硬模块热处理工艺改进  

Improvement of Heat Treatment Process for P20 Large-scale Forging Prehardening Module

作　　者：李进 王佳友 Li Jin;Wang Jiayou

机构地区：[1]大冶特殊钢有限公司,湖北435001

出　　处：《大型铸锻件》2020年第6期37-39,共3页Heavy Casting and Forging

摘　　要：P20大型锻造预硬模块随着厚度尺寸增加,淬火开裂风险增高且心部硬度偏低不均匀。改进P20热处理工艺,采用锻后水雾冷代替淬火可以避免淬火开裂,同时能保证模块表面及心部硬度均匀一致,还能节约生产成本及周期。With the increase of the thickness of P20 large forging pre-hardening module,the risk of quenching cracking increases and the hardness of the core is low and uneven.By improving P20 heat treatment process and adopting water mist cooling after forging which replaces quenching can avoid quenching cracking,and ensure uniform hardness of module surface and core,and save production cost and cycle time.

关 键 词：P20锻造模块 淬火开裂 锻后热处理 水雾冷却 

分 类 号：TG156[金属学及工艺—热处理]