喷射成形技术在高合金工模具钢中的应用  

Application of spray forming technique in high alloy tool and mould steel

作　　者：史海生[1] 颜飞[2] 樊俊飞[1] 乐海荣[1] 金冰忠[1] 彭勇[1] 

机构地区：[1]宝山钢铁股份有限公司宝钢研究院,上海201900 [2]上海交通大学国家教育部高温材料与测试重点实验室,上海200030

出　　处：《粉末冶金材料科学与工程》2008年第3期165-170,共6页Materials Science and Engineering of Powder Metallurgy

摘　　要：采用喷射成形技术制备了几种高合金工模具钢,并与其它工艺生产的同成分钢种作了比较。喷射成形工模具钢具有均匀细化的等轴晶组织,经过热加工和球化退火处理,可以获得与粉末冶金工模具钢相似的球化组织和硬度值,从而为顺利地进行后续淬、回火热处理创造条件。利用喷射成形技术制备高合金工模具钢具有明显优势,它既能有效解决成分偏析、组织不均匀性、网状碳化物等问题,又能明显简化生产工艺,降低生产成本和能源消耗等,具有明显的潜在市场竞争力。Several tool and mould steels were produced by spray forming technique. Its microstructure and hardness have been compared to the same composition steels obtained by other techniques. The as-sprayed tool and mould steel had the finer microstructure of uniform and equiaxial grains, while after hot rolling and spheroidized annealing, they obtained an excellent spheroidized microstructure that is favorable to subsequent quenching and tempering treatment. The spheroidized microstructure and level of annealed hardness of the spray formed steels are almost the same as expensive imported powder metallurgy steels. Compared to the powder metallurgy technique, using the spray forming technique to produce the high alloy tool and mould steel not only has obvious advantages in resolving effectively the composition segregation, heterogeneity of the microstructure, and network carbides, etc., but also potential market competitiveness in simplifying working process, lowering production costs, and reducing consumption of energy sources.

关 键 词：喷射成形 工模具钢 组织 显微硬度 

分 类 号：TF124.39[冶金工程—粉末冶金]