在设计压铸型过程中,较为典型的分型面排气系统有图1所所示几种。图1中A、B两种,虽然排气较为顺利,但由于排气道直接伸向压铸型边缘,很容易造成金属液随气流排出,发生喷溅现象。C所示的排气系统,虽然可阻止金属液的喷溅,但常常会阻碍型腔内气体的排出,使铸件产生气孔。 In the design of die-casting process, the typical parting surface exhaust system shown in Figure 1 shows several. Figure 1 A, B two, although the exhaust is relatively smooth, but as the exhaust extends directly to the die-casting edge, it is easy to cause the metal liquid discharge with the air flow splashed. Exhaust system shown in Figure C, although the liquid metal to prevent splashing, but often impede the cavity of the gas discharge, the casting porosity.