一、干袋式等静压方法的提出和特点成型是粉末冶金基本工序之一。最常采用和最重要的成型方法仍然是钢模压制法。但是钢模压制法也有着它的限制:例如不能压制某些特别细长的薄壁管件和某些异型另件;当另件1/d 较大时,密度沿长度分布明显不均匀等等。这些限制就导致了等静压制的产生。 First, the dry bag isostatic pressing method proposed and characteristics Molding is one of the basic processes of powder metallurgy. The most commonly used and most important forming method is still the steel stamping method. However, the steel stamping method also has its limitations: for example, can not suppress some particularly slender thin-walled tube and some shaped pieces; when the other piece 1 / d is large, the density distribution is not uniform along the length and so on. These restrictions lead to the formation of isostatic pressing.