The conception of deformation angle of helix pre-former is introduced and process parameters are analyzed with math regression method.
以T形焊接接头为算例，结合热弹塑性有限元法和映射应变分量法，研究了角焊缝角变形的产生机制。
Meanwhile, the calculated deformation of the rear fork structure was applied as the welding pre-deformation to the actual production process, in which qualified products were produced.
同时，将计算得到的平叉结构变形量作为焊接预变形量应用于实际工艺中，生产出了合格产品。
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