... spray welding. Advantages:1. Stable flame combustion, unlike to be annealed and broad adjustment range for flame power;2 ... alloy powder: nickel base self-fluxing alloy, cobalt base self-fluxing alloy, iron base self-fluxing alloy, copper base self-fluxing alloy ... of one-step spray welding: small input thermal quantity to base, small base deformation, quick spray welding speed, high powder utilization ...