Heat transfer analysis of EDM process on silicon carbide
Faculty of Computing, Health and Science
School of Engineering
Purpose– The purpose of the research is to analyze instability in ED machining of silicon carbide (SiC) due to heat generation in the workpiece body. The results can be used in selecting a convenient machining set up. Design/methodology/approach– Various researches (1978‐2002) have shown the importance of SiC industrial applications in many branches of technology. Instability process in EDM as a very good candidate for SiC machining is still a serious problem. Joule heating generation in SiC body due to its very high electrical resistivity is a very important point, which needs to be considered. From this point of view, the machining set up can be optimized. Findings– The results of this research provide consideration of some factors to prevent against heat loss and voltage drop in SiC body during ED machining process. This leads the process to be more stable. Originality/value – According to the results of this research, Joule heating due to the voltage drop in SiC body is a main factor in ED machining of this material. Therefore, some techniques as voltage injection are recommended.