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在船舶建造中,焊接已經代替鉚接而成为主要的工艺方法,尤其是熔剂層下自动焊与牛自动焊接、由于具有生产效率高、焊缝質量好、节約焊接材料及电能、改善焊工的劳动条件.对焊接变形影响小等优点,因此必須考虑最大限度的使用这种方法。大家知道,船体的形状是比較复杂的,很多地方具有双重曲度,这些双重曲度不但給推广自动焊接及半自动焊带来了困难,同时由于結构龐大,焊后变形也难以控制。为了使船体形状达到設計要求,通常是在專用胎架上进行装配和焊接,为了有可能使用自动焊和半自动焊,又必須使胎架可以搖
In the shipbuilding, welding has become the main process instead of riveting, in particular the flux layer automatic welding and cattle automatic welding, due to the high production efficiency, weld quality, saving welding materials and electricity, improve the work of the welder Conditions. On the deformation of welding small advantages, it is necessary to consider the maximum use of this method. As we all know, the shape of the hull is more complex, with double curvatures in many places. These double curvatures not only make it difficult to promote automatic welding and semi-automatic welding, but also have difficulties in controlling post-weld deformation due to its large structure. In order to meet the design requirements of the hull shape, usually in the special tire rack assembly and welding, in order to be possible to use automatic welding and semi-automatic welding, but also must make the tire rack can shake