Abstract
Many works have been done on the carburizing or decarburizing phenomena in the cupola operation. But still many problems are remained unsolved to get complete quality control of cast iron in the operation. In this report, for a part of the methods of quality control, the carburizing abilities of various carburizing agents are studied and discussed. In order to clarify the quality of the carburizing agents, the problems on ash viscosities in high temperature and kinds of carburizing agents are studied in the first step. As the results of this investigation, following equations were obtained for and viscosities and various kinds of carburizing agents.
C = αlogS+β
Where C = Carbon pick up (%)
S = Na2O/SiO2+Al2O3
α, β = Constants given by carburizing agents
C = alogT+b
Where C = carbon pick up (%)
T = reaction time (mn)
a, b = constants given by carburizing agents
