THERMODYNAMIC FORECASTING OF FORMATION NONMETALLIC OXIDIC INCLUSIONS IN SEAM METAL AT ARC WELDING UNDER HIGHSILICEOUS GUMBOILS CONTENT
DOI:
https://doi.org/10.20535/2305-9001.2016.76.65659Keywords:
Oxidic nonmetallic inclusions, arc welding under gumboil, the content of nonmetallic inclusions in seam metal, thermodynamic model, silicon oxide, manganese oxide, chemical thermodynamics, welding gumboils.Abstract
At arc welding under gumboil are formed nonmetallic inclusions of different morphology, with their variable volume fraction in seam metal. The physical model of formation of nonmetallic oxidic inclusions in seam metal is developed. The thermodynamic model of formation of oxidic nonmetallic inclusions in seam metal at arc welding under gumboil on the basis of the created physical model is offered. The conducted metalgraphic researches on studying of content of nonmetallic inclusions in metal of a seam and their morphology, have shown adequacy to the offered thermodynamic model Purpose. Creation of settlement thermodynamic model of formation of oxidic nonmetallic inclusions in seam metal at arc welding under gumboil of general purpose. Determination of adequacy to the offered model when using gumboils of various slag systems, and at a variable ratio of components as a part of gumboil. Design/methodology/approach formulate the basic principles of application of equilibrium chemical thermodynamics for modeling of process of formation of oxidic nonmetallic inclusions in seam metal; create thermodynamic model of determination of content of oxidic nonmetallic inclusions in seam metal at arc welding under gumboil; conduct pilot studies for an assessment of adequacy to the developed model of formation of oxidic nonmetallic inclusions. Findings. It is offeredthe thermodynamic model of formation of oxidic nonmetallic inclusions in seam metal at arc welding underReferences
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