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介绍了汽车起重机固定支腿箱制造过程中防止焊接变形的措施。通过槽形工件预留焊接收缩变形尺寸,加装固定板固定槽形,在工艺要求范围内选用适当的电压、电流和焊接速度,所有焊缝都采用对称施焊法,对接纵焊缝处采用多层多道焊等科学防范措施,减少焊接变形及残余应力,提高构件的尺寸精度及使用可靠性,为企业降低成本,提高产品质量的同时创造最大的效益。
The measures to prevent the welding deformation during the manufacturing process of the truck crane fixed leg box are introduced. The welding shrinkage deformation dimension is reserved by the grooved workpiece and the fixed groove shape is fixed. The appropriate voltage, current and welding speed are selected within the process requirements. All welds adopt symmetrical welding method, Multi-layer multi-pass welding and other scientific preventive measures to reduce welding deformation and residual stress, improve the dimensional accuracy of components and the use of reliability, reduce costs for enterprises to improve product quality and create maximum efficiency.