特罗菲莫夫式阀体是机车汽室部分很主要的一个零件,尺寸比较大,形状也比较复杂。这种锻件原先我们采用两体焊接成型(如图1)和整体锻造(如图2)制成;这样很费材料,工时(包括机械加工工时)消耗多,焊条也要消耗很多。我厂工艺技师徐兴海、许德溥两位同志同工人合作研究,采用胎型锻造获得成功。胎型锻造的锻造工时虽然比整体锻造多一些(比两体焊接成型少),但总的加工时数却 Trofimov-style valve body is a very important part of the locomotive chamber, the size is relatively large, the shape is more complicated. Originally, we used two-piece welding (Figure 1) and the overall forging (Figure 2). This made the forging material cost a lot of man-hours (including machining hours) and consumed a lot of electrodes. Our factory technician Xu Xinghai, Xu Depu two comrades work together with the workers, using tire forging success. Although the forging forging tire forging more than the overall forging (less than the two body forming welding), but the total processing time is