Two years' practice shows that the upgraded drum locking device of a piercercan fully meet the requirements of a twice piercing process and is worth wide application.
经两年多的实际使用证明，改进的穿孔机转鼓器完全能满足二次穿孔工艺要求，具有一定的推广价值。
2
It can be used not only for pass design and off line analysis but also for guiding in the adjustment of piercer.