Abstract
The results of studies on the influence of the chemical composition of weld metal, weldstandard and new welding consumables for manual arc welding with coated electrodes, TIGwelding consumable electrode doped, automatic submerged arc welding, steel 08H18AN5 onmechanical and corrosion properties of welded joints. It is found that the mechanical properties ofwelded joints does not depend on the method and welding conditions, as conditioned by thechemical composition of the weld metal. The grain size of the HAZ in welding processes has notchanged, the 7th corresponds score as the base metal in a state of delivery. Resistance welded jointsto intergranular corrosion in the initial state after welding is caused by resistance of the weld metal,and, after provoking annealing at 6500С for an hour - resistance of the weld metal and heat affectedzone. The optimum combination of mechanical properties and resistance to intergranular corrosion08H18AN5 steel welded joints is achieved when the content of the weld metal of 17-18 %chromium, 6-7 % nickel, 2-3 % manganese, 0,12-0,15 % nitrogen, carbon 0,05 %.From the standard materials the best results are obtained by the use of wire Sv-01H19N9and Sv-07H20N9G7T with TIG welding electrodes NIAT-1 or CL-11 for manual arc welding, St-07H19N10B wire for automatic welding under flux AN-26.
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