The re-bar end used for electroslag welding should be straight, flat and clean free of U-shaped, bruising, concave and convex, bending or distorted deformations.
电渣压力焊焊接使用的钢筋端头应平直、干净，不得有马蹄形、压扁、凸凹不平、弯曲扭曲等严重变形。
A primary formula to calculate the buckling critical load is put forward, when U-shaped bellows only subjected to bending, and will be discussed for the future.
此外，本文提出了在弯矩载荷作用下，U形波纹管膨胀节失稳临界弯矩的初步计算公式。
The die, with the hopper-type automatic feeding device, is used for bending various V-shaped, U-shaped and bow-shaped parts and suitable for mass serial production.
介绍了在通用冲床上使用的漏斗式自动送料弯曲模的结构形式、工作过程和设计要点。
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