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我厂经反复试验,于1977年3月试制成功铸铝电焊条,并用以焊修各种铸铝件。铸铝电焊具有效率高、变形小、焊接质量好、修复成本低等优点。我厂用电焊先后修复518—12型手扶拖拉机水箱、水箱盖、高压泵外壳和各种铸铝胎模等,经水压试验和实际使用,一次修复合格率达90%以上,效果良好。用电焊修复518—12型手扶拖拉机水箱(裂纹长100～150毫米)的费用只有3～5元,为水箱价格的8～12%。现将其焊条蘸制和焊接要点介绍于下。
I plant after repeated tests, in March 1977 successfully trial cast aluminum welding electrodes, and used to repair all kinds of cast aluminum parts. Casting aluminum welding with high efficiency, small deformation, welding quality, low repair costs. Our factory repaired the 518-12 walking tractor water tank, water tank cover, high pressure pump shell and various cast aluminum tire mold successively with electric welding. After the hydrostatic test and actual use, the qualified rate of over 90% can be repaired once, and the effect is good. Electric welding repair 518-12-type tractor water tank (crack length 100 ~ 150 mm) costs only 3 to 5 yuan for the tank price of 8 to 12%. Now its electrode dip and welding points introduced below.