TPWJ, 2018, #7, 30-32 pages
Calculation of penetration zone dimensions in surfacing of rolls for billet continuous casting machines
Journal The Paton Welding Journal
Publisher International Association «Welding»
ISSN 0957-798X (print)
Issue #7, 2018 (July)
V.N. Matvienko, L.K. Leshchinsky and V.A. Mazur
State Higher Education Institute Pryazovsky State Technical University
7 Universitetskaya Str., 87500, Mariupol, Ukraine. E-mail: firstname.lastname@example.org
It is shown that in surfacing rolls of billet continuous casting machines (BCCM) the dimensions of the penetration zone are affected by chemical composition and thermophysical properties of the material of the roll or deposited sublayer. The calculated values of the cross-sectional area, penetration depth and volume of molten metal are presented. They were obtained by numerical modeling on the basis of solving the nonlinear three-dimensional differential equation of thermal conductivity, taking into account the approximated temperature dependence of thermal conductivity coefficient. It was established by calculation and confirmed by experiment that the dimensions of penetration zone increase at submerged-arc surfacing with strip electrode of a sublayer of martensitic-ferritic high-chromium steel and to a higher extent at surfacing of a sublayer of chromium-nickel steel as compared to surfacing of the roll material or of a sublayer of low-carbon low-alloyed steel. 10 Ref., 3 Tables, 3 Figures.
roll of a billet continuous casting machine, base metal, submerged-arc surfacing, strip electrode, penetration zone, dimensions, numerical modeling, deposited layer, sublayer, chemical composition, thermophysical characteristics, thermal conductivity coefficient
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