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Vpliv dezoksidantov na vsebnost kisika v čistem varu in izkoristek Cr iz plašča pri elektroobločnem varjenju
Kejžar, Rajko
Zakonitosti poteka reakcij med varjenjem z visokolegiranimi oplaščenimi elektrodami (Pr 18/8) so ugotovljene na osnovi matematične obdelave rezultatov raziskav. Pri visoko legiranih elektrodah ...(legiranje vara s kromom iz plašča) pride do omejitev uporabnosti teh elektrod zaradi visokih minimalnih izkoristkov varjenja. Prenos kisika iz plinske faze v talino žlindre in vara je pri elektrodah, ki so oblikovane na nelegirano žico "EO", nekoliko višji kot pri elektrodah, ki so oblikovane na legirani žici "EPP Cr 6 in PR 18/8" (razlike v odtaljevanju). Razlike v porazdelitvi kroma med žlindro in varom pa so kljub razlikam v načinu legiranja vara s kromom neznatne. Vsebnosti kisika v čistih varih, ki so zavarjeni z visoko legiranimi elektrodami, so nad 500 ppm.
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