一、铝——硅共晶活塞液态模锻工艺概述液态模锻是把一定量的液态金属直接浇入凹模,随即将上模压下使组成封闭的模腔,在液态金属将凝而未凝时,用液压机对它施加压力,直到全部金属凝固为止。由于金属是在较高压力作用下凝固结晶的,形成的晶粒不断被压碎而细化,从而把铸造的大树枝晶变为细小的等轴晶粒。在随后的冷却收缩中,仍继续受到压缩。因此, First, the aluminum-silicon eutectic piston liquid forging process Overview Liquid forging is a certain amount of liquid metal directly into the die, then the upper die is pressed to form a closed cavity, the liquid metal will not condensate coagulation When it is pressured with a hydraulic press until all the metal has solidified. As the metal is solidified and crystallized under higher pressure, the formed grains are continuously crushed and refined to transform the cast large dendrite into fine equiaxed grains. In the subsequent cooling contraction, still continue to be compressed. therefore,