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采用中压压铸法与局部加压复合工艺，适当地选择充填速率，并通过热流设计而形成强化定向凝固的模具温度场，便可获得优质少无孔洞的压铸件．
Medium-pressure die-casting method and partial pressure compounding process are adopted, the filling rate is selected properly, and the mold temperature field for strengthening directional solidification is formed through the heat flow design so as to obtain the die-casting with good quality and no holes.