Gas carburizing performed while heating with an internal heat source

Measurement of the mass transfer coefficient at workpiece surfaces in heat treatment furnaces

“…Edenhofer (1995) and Sommer (1987) have calculated the carbon transfer coefficient from the gas composition (CO and H 2 ) according to the carburizing reaction in the H 2 /CH 4 /H 2 O-CO/CO 2 -N 2 system reported by Neumann and Wyss (1970). Several expressions for the mass transfer coefficient have been reported (Collin et al, 1972;Mikhailov, 1978;Chernov et al, 1980;Gyulikhandanov et al, 1981;Sproge and Agren, 1988;Andreev and Chernyakhovskii, 1989;Andryushechkin et al, 1989;Gao et al, 2002;Gupta et al, 2002;Gao et al, 2004), although, * Corresponding author.…”