在自由锻带孔圆盘、套筒、圆环中,第一次冲孔往往依靠操作人员的眼力来定位,经验丰富的高级工有时也会由于种种原因将孔冲偏,为防止锻件报废,就需在以后的锻造过程中采取一系列补救措施。这不仅很费功夫,而且有些很难纠正。 In the free forged perforated disc, sleeve, ring, the first punching often rely on the operator’s eyesight to locate the experienced senior workers sometimes due to various reasons the hole red offset, in order to prevent forgings scrapped, You need to be in the process of forging a series of remedial measures. This is not only laborious but also difficult to correct.