Repair welding method for magnesium alloy casting oil way
A magnesium alloy and oil circuit technology, applied in welding equipment, welding accessories, arc welding equipment, etc., can solve the problems of scrap castings, difficult to remove gaskets, loss of waste products, etc., to save castings, easy to remove, and small thermal expansion coefficient. Effect
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[0032] The oil passage of the rear casing of a helicopter transmission system, the material grade is ZM6, has a blow hole defect after casting, the diameter of the oil passage at the defect is Φ12mm, and the length is 100mm. Repair welding is required to achieve the purpose of repair. Its specific implementation process is as follows:
[0033] (1) Process the graphite to make it consistent with the shape and size of the oil passage at the defect, that is, the graphite has a diameter of Φ12mm and a length of 100mm;
[0034] (2) Clean up the defects in the oil circuit until the defects are completely removed;
[0035] (3) Process the groove at the defect, and the angle at the groove is 50°;
[0036] (4) Put the processed graphite into the place to be welded, so that the graphite and the oil passage wall are attached;
[0037] (5) Adjust the position of the casting so that the weld is horizontal to facilitate repair welding;
[0038] (6) Clean up the welding wire, the materia...
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