830后壳体外廓大小相当于倒扣的洗脸盆,内腔为双层腔式结构,盆缘即为法兰盘。采用消失模工艺生产[1,2]。从铸件图可以看到(见图1),中部轴承座旁有一主油道通往外部,油道靠外部的一段是直管,可以铸死用机加工钻出,由于直管铸死后就变成盲孔;油 830 shell size is equivalent to the size of the inverted washbasin, lumen for the double cavity structure, basin edge is the flange. The use of EPC technology production [1,2]. Can be seen from the castings (see Figure 1), the central bearing block next to a main oil passage leading to the outside, the outer part of the oil passage is a straight pipe, you can die by machining with the drilling, as straight pipe after casting Into a blind hole; oil