Optimization of Heat Treatment Processes Using Taguchi’s Parameter Design Approach

The utilization of carburizing materials in engineering fields has undergone so many tremendous changes in engineering fields. Gas carburizing is one of the surface engineering techniques widely used in the process of heat treatment in all the engineering industries. Carburizing is a complex process; it involves a number of variables for the success of the carburizing process. Effective quality control is possible through carburizing the components under optimal conditions .The objective of the paper is to obtain an optimal setting of carburizing process parameters (carburizing temperature, soaking time, gas diffusion effect ,furnace air circulation ) resulting in optimal values of the correct depth of the case in the surface of the components. Taguchi method is a powerful design of the experiment (DOE) tool for engineering optimization of a process. Analysis of variance (ANOVA) is used to study the effect of process parameters and establish correlation among the carburizing temperature, soaking time, gas diffusion effect, furnace air circulation.