Kalin N. Increase of quality of metal of a seam at welding by electrodes with a sour covering by application of a pig-iron powder

Object - process deoxidization of metal of a seam by application pig-iron powder in a covering ilmenite of electrodes. The purpose - increase of quality of metal of a seam and welding-technological properties of electrodes with a sour covering. Methods - theoretical settlement and experimental: physics-mechanical, chemical, metal-graphic of research, test stability to cracks, industrial test. The novelty - is established, that for deoxidization of metal of a seam it is more expedient to use carbon in structure of a pig-iron powder. Results: the dependence is established the contents of carbon in metal of a seam from oxidizing abilities of a covering, the process of oxidation is shown to a stage of a drop metal connected by carbon on reduction of the contents not metal inclusions, oxygen and increase mechanical properties metal of a seam. A degree of introduction-technology manufacturing of electrodes with a pig-iron powder is introduced on the state enterprise "A Factory by him Malicheva" industrial test on open Stock Company "The Kharkow tractor factory", open Stock Company "Turboatom", Kharkow. Efficiency 91,5 thousand grn. Sphere of use - mechanical engineering.