Electromagnetic stirring auxiliary argon arc welding repairing method for cast magnesium alloy aviation component
A technology of casting magnesium alloy and electromagnetic stirring, which is applied in the direction of arc welding equipment, manufacturing tools, welding equipment, etc., and can solve the problems of delaying the maintenance cycle of the whole machine, welding pores and cracks on the surface of the weld, and scrapping
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[0025] Example one
[0026] For a certain type of aircraft cast magnesium alloy propeller hub fairing fixing bracket, it was found that surface cracks or even penetrating cracks appeared on the side of the mounting bolt holes during the renovation, and the nearby corrosion was serious. Aiming at the crack corrosion defect, electromagnetic stirring assisted argon arc welding was carried out to repair its defects. The implementation steps are as follows:
[0027] 1. Confirmation of cracks and corrosion of the fixed bracket of the hub fairing
[0028] A certain type of aircraft hub fairing fixing bracket is made of ZM5 magnesium alloy. When the fixing bracket was overhauled, it was found that two mounting bolt holes had cracks, 1 was a surface crack, 1 was a through crack, and the edges of the two holes A full circle of corrosion pits appeared.
[0029] 2. Repair process and inspection
[0030] (1) Choose Φ1.5mm ZM5 magnesium alloy welding wire as the repair material of the component;
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