CarbTool has been an effective tool for the simulation of both gas and low pressure carburizing (LPC) processes by industry. However, in some cases the LPC model prediction does not agree very well with the experimental results. The average carbon flux was initially used as the boundary condition which was calculated from experimental data. This boundary condition is modified to improve the LPC process simulation. An improvement using a carbon potential for LPC process is proposed. Both carbon potential and mass transfer coefficient will be calculated. Data will be used to optimize the modeling of the CarbTool. Experimental verification will also be discussed.
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