毛主席教导我们:“马克思主义的哲学认为十分重要的问题,不在于懂得了客观世界的规律性,因而能够解释世界,而在于拿了这种对于客观规律性的认识去能动地改造世界。”我国焊接工人在生产中不断摸索各种情况下变形的规律,创造出很多防止焊接变形的方法。现将部分实例,简介如下,供参考。反变形法预先把焊件作出能基本上抵消(补偿)焊后弯曲变形的反变形来达到防止焊后变形的目的。这种方法叫做反变形法。图1是 V型坡口单面对焊的变形情况。当采用反变形后,基本上消除了变形(图1b)。工字梁 Chairman Mao taught us: “The Marxist philosophy holds that the very important issue lies not in understanding the laws of the objective world, and therefore in explaining the world, but in taking such an understanding of the objective laws to move the world in an active manner.” China’s welding workers in the production of continuous exploration of the law of deformation under various conditions, to create a lot of ways to prevent welding deformation. Now some examples, the following is for reference. Anti-deformation method pre-made to make welding can be basically offset (compensation) anti-deformation after bending deformation to achieve the purpose of preventing deformation after welding. This method is called anti-deformation method. Figure 1 is a V-groove single-sided butt welding deformation. When using anti-deformation, the deformation is basically eliminated (Figure 1b). I-beam