Modyfikacja struktury i właściwości napoin wykonanych łukiem krytym
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Abstract
W artykule przedstawiono wyniki prób modyfikacji struktury i właściwości napoin wykonanych łukiem krytym spoiwem niskowęglowym przez wprowadzenie do jeziorka ciekłego metalu proszku metalicznego na osnowie niklu wraz ze zmienną zawartością Al2O3 oraz SiC. Określono wpływ parametrów napawania na wymiary geometryczne napoin oraz udział materiału rodzimego w napoinie. Wykonane napoiny proste oraz zakładkowe zostały poddane badaniom nieniszczącym, badaniom metalograficznym, pomiarom twardości, a także badaniom odporności na zużycie ścierne typu metal-minerał.
Modification of structure and properties of padding welds made by submerged arc surfacing
The article presents the results of modification of structure and properties of submerged-arc surfacing padding welds. To modification is by the nickel-base flux with variable Al2O3 and SiC mass fraction addition into the arc weld pool. The process parameters influence on the geometrical dimensions of the padding weld and base material in the padding weld is observed. The simple and overlap padding welds have been non-destructive testing, metallographic examinations, hardness distribution measurements and resistance to abrasive wear of metal-mineral joints investigating.
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