STUDY ON FLUX-CORED WIRE FOR ELECTRIC ARC SPRAYING AND PROPERTIES OF COATING

摘要

According to the characteristics of electric arc spraying technology and abrasion f boiler piping, a flux-cored wire SMD 45 for electric arc spraying is developed. The experimental results show that the surface hardness of the coating reaches 60～65 HR and the adhesive strength between the coating and base is 23～28 MPa. The wearability of the coating sprayed by the wire is 5 times than that of ordinary steel pipe. Applying the wire to the heated surface, the life of the economizer pipe is doubly increased. No local desquamation, rust and abrasion an e examined during more than one year's service.