胶轮车车架是由多种型材组合焊接而成,这种熔化焊接是一个不均匀的加热过程,导致焊后钢结构件产生了较大的残余应力和变形,既影响结构件的外观质量和加工精度,又降低它的承载能力。因 Rubber tire frame is a combination of a variety of profiles welded together, this fusion welding is a non-uniform heating process, resulting in post-weld steel structures have a greater residual stress and deformation, both affect the quality appearance of the structure And processing accuracy, but also reduce its carrying capacity. because