Based on practical process, defection in aluminum tubeneck-spinning is analyzed, and defection sort, cause and prevention method are listed.
结合实际工艺，对铝合金薄壁管缩径旋压的缺陷进行分析，列出了缺陷的种类、产生原因以及预防措施。
2
Carry a small tube of sunscreen or a one-use, wipe sunscreen in your pocket, so that you can reapply it to your face, neck and arms as you run.
在口袋里放一小罐或者是一次性的防晒霜，这样你中途还能给你的暴露部位再抹一次。
3
The working procedure of cutting tube: firstly using driving mechanism to drive cutter blade to cut the necktube, then using fire to heat the cut position to achieve the purpose of cutting necktube.