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二、关于焊接次序問題 焊接次序对变形有很大的影响;因为先焊的焊縫所引起的收縮力要比后焊的焊縫的收縮力要大一些。我們在选择焊接次序时应遵守下列原則:1)刚度逐步形成,2)避免在刚性外形下焊接。当然选择焊接次序不能脫离結构的技术要求。現在我們來研究一下几种常見的例子。 (1)焊接工字梁的焊接次序:焊接工字梁的焊接次序首先要决定两个
Second, the order of the welding sequence The welding sequence has a great impact on the deformation; because the first weld caused by the contraction of the weld than the weld after the contraction force to be larger. We should follow the following principles in selecting welding sequence: 1) Stiffness is gradually formed; 2) Avoid welding under rigid profile. Of course, choose the welding sequence can not be separated from the structure of the technical requirements. Now let’s look at a few common examples. (1) welding I-beam welding order: Welding I-beam welding order must first determine the two