Repairing the composite metal layer of bearing bush of large rotating equipment by online repair welding is a least costly repair method. However

the welding can only be carried out in horizontal position because of the heavy bearing

the difficulty of adjusting the bearing Angle

the low melting point of composite metal and the easy flow of liquid. These difficulties limit the implementation of online repair work and form the difficult problem of repairing bearing bush defects. For repair welding only horizontal position welding

as well as the bearing rotation fixed is difficult

the professional equipment for adjusting the bearing bush welding and repair posture has been innovated

and the tools for reducing the adverse factors of the formation of wear-resistant alloy liquid welds have been developed. For poor fusion of dissimilar metal welding between bearing base metal and wear-resistant layer alloy

using the shallow penetration

easy operating method of fusion. This series of improvement measures can effectively overcome the difficulties through practice

so that online comprehensive high quality and efficient welding repair damaged wear-resistant alloy layer work can be implemented smoothly.