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近来,在制造簡单形状和复杂形状零件方面,液体金属模鍛的应用日益广泛,这是由于: (1)得到的毛坯几何尺寸接近成品; (2)节約金属,有时可节約80％(和挤压棒材經切削加工的方法比較); (3)減少机械加工量。工作是在普通压力机上进行的,液体模鍛小型零件的毛坯重量在0.5公斤以下。液体模鍛的实质是,一定量的液体金属注入模內(图1),然后在金属液面上用压力机冲头施加压力,直到結品終了。結果就能获得組織致密、形状正确和精度較高的毛坯。
Recently, liquid metal forging has been used more and more widely in the manufacture of simple and complex shaped parts due to: (1) the resulting rough geometries are close to the finished product; (2) metal saving, sometimes saving up to 80% (Compared with the method of cutting extruded bars); (3) to reduce the amount of machining. Work is carried out on a common press, the weight of the liquid die forging small parts of 0.5 kg or less. The essence of liquid forging is that a certain amount of liquid metal is injected into the mold (Figure 1) and the pressure is applied to the metal surface by the press punch until the end of the product is completed. As a result, it is possible to obtain rough, well-formed and high precision blanks.