| 2002 №04 (03) | 2002 №04 (05) |
The Paton Welding Journal, 2002, #4, 17-20 pages
Peculiarities of carbon oxidation in welding with ilmenite-covered electrodes
N.A. Kalin, N.G. Efimenko
Ukrainian Engineering-Pedagogical Academy, Kharkov, UkraineAbstract
It was established that the process of decarburization of Fe-C alloy, for example, in the form of cast iron, in electrode coatings occurs mainly in the slag phase under the lower part of a growing droplet. Oxygen dissolved in metal and coming from the slag serves as oxidizer of carbon in the melt. It was found that losses of carbon for oxidation in the Fe-C alloy are 1.5 times higher than those of graphite, and the rate of decarburization at the droplet stage is twice as high.
Keywords: carbon, Fe-C alloy, electrode coating, stage of droplet, decarburization, oxidation, carbon losses, micro¬structure, cast iron powder
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