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凸缘件的制造是比较复杂的,尤其是双凸缘件或多凸缘件的锻造将会遇到更多的困难。以前曾采用下述三种凸缘件加工方法:一种是先锻制出带大凸缘一端的锻件,然后通过车削加工车出另一端的凸缘,这种方法需要浪费较多的原材料;另一种是先锻制出工件一端的凸缘,再锻制出另一端的凸缘,这种方法的缺点是在锻件中间部分会发生偏移或错位;第三种是采用焊接法,即先将凸缘工件分成两半锻造成形,然后将两半锻件消
The manufacture of flanges is more complicated, and in particular the forging of double flanges or multiple flanges will encounter more difficulties. In the past, the following three kinds of flange processing methods were adopted: one was forging a forging with a large flange first, and then turning the flange of the other end by turning, which required waste of more raw materials; Another is the first forging the flange at one end of the workpiece, and then forged the other end of the flange, the disadvantage of this method is forgings in the middle part of the offset or dislocation occurs; The third is the use of welding, that is First flange workpiece is divided into two forging shape, and then two forging pieces disappear