本文对扁管压成弯管时容易起褶皱或折断的现象进行了理论上的探讨，并提出了解决这一问题的措施。

In this paper, the phenomenon that flat pipes are easy to be crumpled when they are extruded into bent ones is explored, and some methods are presented to solve this problem.

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在接触式弯管测量机的基础上，采用激光CCD对测量叉进行改进，实现弯管的非接触测量。

Based on the contact type measuring machine for bent tube, the probe, which is improved by using laser and CCD, can be used to achieve the non contact measurement of a bent tube.

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