对汽车槽钢大梁裂纹的补焊方法较多,有半封闭式箱形焊法、断裂处补板法、钻止裂孔热焊法等等。但因以上方法不但工艺复杂、所用材料多,而且由于在焊接过程中增加了焊接应力与焊接变形,使以后的补焊修复工作更难以进行。 There are many ways to make repairs to the cracks in automobile steel girders, such as semi-enclosed box welding, break-up patch method, drilling and hot-drilling method, and so on. However, due to the above method is not only complicated process, the use of more materials, and because of the increase in the welding process of welding stress and welding deformation, making repairs after the repair work more difficult.