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粉末冶金热锻是六十年代迅速发展起来的一项新工艺。它是采用普通粉末冶金方法,将金属或合金粉末制成一定尺寸、形状和重量的预成形坯,经过烧结,然后加热锻造(简称烧结锻造)或者不经烧结而直接加热锻造(简称粉末锻造)成产品形状。粉末冶金热锻工艺吸取了锻造工艺的特点,通过加热锻造的途径,大大捉高了粉末冶金制品的密度,从而使粉末冶金制品的性能提高到接近甚至超过同类锻钢的水平,从根本上克服了普通粉末冶金制品由于存在大量的孔隙而满足不了高强度零件性能要求的缺陷。然而,
Powder metallurgy hot forging is the rapid development of a new technology in the sixties. It is the use of ordinary powder metallurgy method, the metal or alloy powder into a certain size, shape and weight of the preform, after sintering, and then heated forging (referred to as sintering forging) or direct heating forging without sintering (referred to as powder forging) Into the product shape. Powder metallurgy hot forging process to learn the characteristics of the forging process, by forging way, greatly enhance the density of powder metallurgy products, so that the performance of the powder metallurgy products close to or even exceed the level of the same type of forged steel, fundamentally overcome Ordinary powder metallurgy products due to the existence of a large number of pores and can not meet the performance requirements of high-strength parts of the defect. however,