The purpose of the research was to study the equal performance remanufacturing technology of the traction motor frame to reduce the whole life cycle cost of the traction motor.Laser cladding technology was used to prepare the cladding layer for the traction motor base of ductile iron.The cladding powder selection and cladding process parameters were optimized according to the quality and mechanical properties of the cladding layer.The effects of cladding powder,laser power,scanning speed and powder feeding rate on the properties of cladding layer were studied,and the cladding layer with defectless surface morphology and superior performance was prepared.The results show that when the nickel-based No.2 powder is cladded with the laser power of 1.2 kW,scanning speed of 6 mm/s and powder feeding rate of 18 g/min or with a laser power of 1.5 kW,a scanning speed of 8 mm/s,and a powder feeding rate of 16 g/min,the strength and toughness of the cladding layer are better than those of the ductile iron matrix,which can effectively avoid the economic loss of overall scrapping after the assembly and processing surface of the traction motor base is worn.
laser claddingtraction motor frameductile ironside shaft powder feeding
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