通过连接头V法生产的各种工艺参数的变化,研究了连接头生产的工艺规范。实验结果表明,真空压力在0.45 MPa左右时,能生产出合格铸件;浇注时的真空压力不能太高和太低,真空压力太高容易造成铸件气蚀缺陷,压力太低浇注时容易塌箱。 Through the change of various process parameters produced by the connector V method, the technical specifications of the connector production are studied. The experimental results show that when the vacuum pressure is about 0.45 MPa, the qualified castings can be produced; the vacuum pressure during casting can not be too high and too low; the vacuum pressure is too high, which easily causes the cavitation defects of castings;