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目前,一些先进的汽车修理企业在修理发动机时,越来越广泛地采用铸铁的冷焊工艺、铝件在氩介质中的焊接与堆焊、等离子与气体等离子金属喷镀、粉末焊丝的堆焊等。在修理吉尔—130、吉尔—131和乌拉尔—375汽车的发动机时,在气缸体上经常发现燃烧室壁和气缸套下面配合孔之间的交接处出现裂纹,也有油泵固定板被折断和汽油泵拉杆导向孔部分被碰坏的现象。这些缺陷都可以通过裂纹的补焊或焊辅助零件的方法消除。焊时采用—1和—2型焊条进行直流反极性焊接。
At present, some advanced auto repair enterprises are using the cold welding technology of cast iron, the welding and surfacing of aluminum parts in argon medium, the plasma spraying of plasma and gas, the welding of powder wire Wait. In repairing the engine of Jill-130, Jill-131 and Ural-375, cracks were often found on the cylinder block at the interface between the combustion chamber wall and the mating hole below the liner, and the oil pump mounting plate was broken and the gasoline pump Lever guide hole part is damaged phenomenon. These defects can be cracked by welding or welding parts to help eliminate the method. -1 and -2 welding electrodes are used for DC reverse polarity welding when welding.