摘要
本文介绍了涂层组合材料穿孔顶头,它使塌鼻、粘钢、开裂等现象得到了改善。同时指明,为延长这种顶头的使用寿命,穿孔时冷却水必须保持一定的压力。
Plug nose-caving,sticking and cracking are improved through the use of the coated plug made of compound materials described in the paper but certain pressure of cooling water must be kept during piercing in order to make the plug service longer.
出处
《钢管》
CAS
1989年第6期17-18,共2页
Steel Pipe
