METHOD OF WELD JOINT ALLOYING AT ARC WELDING IN ATMOSPHERE OF CARBON DIOXIDE

摘要

FIELD: process engineering.SUBSTANCE: invention may be used in reconditioning by welding or surfacing on machine parts made of high-alloy steels in atmosphere of carbon dioxide. Alloying film-like elements are pre-applied on part surface at would be weld joint by spark surface processing using high-alloyed electrode wire. Low-alloyed consumable wire is fed in welding area to fire electric arc between wire and part being reconditioned at simultaneous feed of carbon dioxide in said area. Note here that molten pool is made from high-alloyed elements.EFFECT: weld joint metal strength increased to magnitudes required for reconditioning by transfer of alloying elements in weld joint.1 tbl, 7 ex