Electrical Discharge Machining (EDM) of Reaction Bonded Silicon Carbide (RB-SiC)

Abd Wahab, Muhammad Hishamuddin (2014) Electrical Discharge Machining (EDM) of Reaction Bonded Silicon Carbide (RB-SiC). Project Report. Universiti Teknikal Malaysia Melaka, Melaka, Malaysia. (Submitted)

	Text (24 Pages) Electrical discharge machining EDM of reaction bonded silicon carnide RB Sic.pdf - Submitted Version Download (1MB)
	Text (Full Text) Electrical Discharge Machining (EDM) of Reaction Bonded Silicon Carbide (RB-SiC).pdf - Submitted Version Restricted to Repository staff only Download (1MB)

Abstract

Electrical discharge machining (EDM) is a non-traditional manufacturing machining process where the material removal of the workpiece is done by achieving the high frequency of sparks between the wokpiece and the electrode which immersed in the dielectric fluid. This machining usually used to machine harder materials with higher dimension accuracy, making micro holes and deep holes. The objectives of this study are to compare the effect of addition of micro and nano carbon powder on RB-SiC by using EDM die sinking and to study the effects of the powders on material removal rate (MRR), tool wear ratio (TWR), surface roughness (Ra) and spark gap. Concentrations of powder and size of particles are used as the variable parameters in this process. In this study, EDM machine model SODICK AQ35L is used. MRR and TWR are calculated before and after machining while spark gap and surface roughness are calculated after machining. Correlation method has been applied to this project. Based on the four characteristics, nano carbon (40 nm) powder shows good results compared to the micro carbon powder (200-300 μm). At this point, small particles gave large effects to the results. In addition, by adding carbon powders, the results have been improved compared when no adding carbon powder.

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