Conclusions
-
1.
Mathematical models reflecting the interrelationship between carbon potential and the gas parameters and temperature of a furnace atmosphere are developed.
-
2.
The error of a model in the form log ϕ aC =f(%CO; %CO2; t; n) does not exceed ±0.02% C in practical ranges of furnace-atmosphere parameters.
-
3.
The models that we developed make it possible to create comparatively simple algorithms to compute the carbon potential for specialized and universal computer units.
Similar content being viewed by others
Literature cited
H. Schenk and H. Kaiser, Archiv Eisenhutten., No. 31, 227 (1960).
B. M. Tomilin, I. A. Mogutnov, and L. A. Shvartsman, Thermodynamics of Carbon-Iron Alloys [in Russian], Metallurgiya, Moscow (1972).
T. Ellis, M. Davidson, and C. Botworth, "Some thermodynamics properties of carbon in austenite," J. Iron Steel Inst.201, 582 (1963).
T. Sobusiak, "Wlyw sklado shemicznego atmosfer na ich wlasnosci naweglajace," Metaloznawstwo Obrobka Sieplna, No. 16 (1975).
I. Wunning, Offenlegungsschrift, 1673 308 (June 16, 1971).
F. Neumann and U. Wyss, "Aufkohlungsvirkung von gasegemischen in sistem H2/CH4/H2O-CO/CO2-N2," Herterei-Techn. Mitt., No. 4, 235–265 (1970).
I. Wunning, "Gasaufkohlungsverfaren," Aichelin Industrie-Offenbau. Haufe-Verlag, No. 20/4 (1969).
N. M. Buslovich, É. Ya. Makhtinger, and L. A. Mikhailov, "Scientific bases for the design of electric gas-carburizing furnaces," in: Proceedings of the All-Union Scientific-Research Institute of Experimental Heat Treatment [in Russian], Energiya, Moscow (1979).
F. D. Richardson and I. H. Jeffes, J. Iron Steel Inst.,160, 261 (1948).
E. Kasprzycka, "Tablice ctalych rownowagi chemiczenej wytranych reakcij w atmosferach gazowych stosowanych w obrobke cieplno-chemieznej," Metaloznawstwo i Obrobka Sieplna, No. 12 (1974).
B. A. Moiseev, Yu. M. Brunzel', and A. A. Shvartsman, "Thermodynamic activity of carbon during restoration carburizing," Metalloved. Term. Obrab. Met., No. 1, 21–26 (1974).
V. L. Melshkin, E. Ya. Surman, and A. A. Brakhman, "Digital program control of a furnace chamber complex for case-hardening," Avtomobil. Prom., No. 6 (1984).
V. L. Meleshkin, "On the use of oxygen-potential regulators in case-hardening practice," Tekh. Avtomobilestr., No. 10 (1981).
V. L. Meleshkin and V. M. Zinchenko, "Automatic regulation of the carbon potential in furnace atmospheres," Metalloved. Term. Obrab. Met., No. 8, 64–67 (1978).
Additional information
Scientific-Research Institute for Automation of Manufacturing Processes in Industry. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 6, pp. 6–11, June, 1986.
Rights and permissions
About this article
Cite this article
Meleshkin, V.L. Problem of developing algorithms for computation of the carbon potential of furnace atmospheres. Met Sci Heat Treat 28, 388–393 (1986). https://doi.org/10.1007/BF00836882
Issue Date:
DOI: https://doi.org/10.1007/BF00836882