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如何提高结构件在粉末冶金制品中的比例呢?关键之一是首先设法提高粉末冶金制品的强度。借鉴国外经验,母合金技术就是近年来为满足粉末冶金制品的高强度要求,扩大合金化途径而发展起来的一项新技术。它是把合金化的元素预先制成母合金,然后以这种合金的形式,而不是个别元素的形式加到粉末冶金铁基制品中的一项技术,它具有提高制品强度,节省稀贵金属(仅加入4％左右的MCM或MVM母合金便能达到Fe—Ni-Cu—C系中加入近10％Ni、Cu合金元素所获得的机械性能),等优点。而且可扩大合金化元素的范围,不受合金元素易氧化,易挥发等各种条件的限制。如Cr、Mn、Mo等元素因它们与氧亲合力大或因易挥发、熔点高等原因,故较难进行合金化,但
How to improve the proportion of structural parts in powder metallurgy products? One of the keys is to first try to improve the strength of the powder metallurgy products. Drawing on foreign experience, the mother alloy technology is a new technology developed in recent years to meet the high strength requirements of powder metallurgy products and expand the alloying approach. It is a technology that pre-alloyed alloying elements into a parent alloy and then added to the powder metallurgy iron based articles in the form of this alloy, rather than individual elements, which has the effect of increasing the strength of the product, saving valuable metals Addition of only about 4% of MCM or MVM master alloy can achieve the Fe-Ni-Cu-C system by adding nearly 10% of Ni, Cu alloy elements obtained mechanical properties), and so on. But also to expand the scope of alloying elements, free from alloying elements easily oxidized, volatile and other conditions. Such as Cr, Mn, Mo and other elements due to their affinity with oxygen or due to volatile, high melting point, it is more difficult alloying, but