Die forging is playing a more and more role in modern manufacturing industry,improvement of the existing die forging technology has a very important significance.This article introduces and compared the traditional open die forging and closed die forging,according to defects and deficiencies of the traditional closed die forging and the open die forging,two kinds of new die forging technology are put forward.The two die forging processes comprehensive the advantages of open die forging and closed die forgin...