半液体金属模压是在摩擦压机上进行,它能直接利用热模锻所用的有飞边或无飞边锻模来压制毛胚。模压的工艺过程:用定量浇勺把熔化的金属注入敞开的模中,金属在模腔内停留相当时间直至表面出现收缩孔或收缩裂痕后,立即开动压机放下上模,对处于半液体状态的金属加压,金属在这瞬时的冲击力下成型,并借此力消除一般铸造方面所难避免的气孔和疏松等缺陷,又因压力有细化晶粒的作用,所以毛胚的机械性能大大提高,甚至达到模锻件 Semi-liquid metal molding is carried out on the friction press, it can directly use the hot forging used flash or no flash forging dies to suppress the embryo. Molding process: with quantitative pouring spoon molten metal into the open mold, the metal in the mold cavity to stay for a considerable time until the surface contraction holes or shrink cracks, immediately start the press down the upper mold, in a semi-liquid state Of the metal pressure, the metal in the instant impact under the shape, and to eliminate the general foundry casting holes and porosity and other defects are avoided, and because of the pressure of grain refinement, so the mechanical properties of the blank Greatly improved, even forging pieces