Abstract
In this work, influence of machining parameters of the electro discharge machining (EDM) and Abrasive-water jet machining (AWJM) processes on the material removal rate, tool wear rate and surface roughness of the composites were investigated. Titanium nitride and tantalum carbide particles reinforced vitallium composite material was synthesized by stir casting method. The machining characteristics were analyzed through Taguchi and ANOVA methods. The Taguchi optimization technique was used to find the optimal level of parameters while the percentage of contribution for each input parameter on the responses was computed by ANOVA. Scanning electron microscope (SEM) was employed to examine the surface morphology.
Highlights
The vitallium metal matrix is mainly used in medical applications like making of artificial joints, dental and surgical appliances
The results revealed that higher abrasive flow rate, lower traverse rate, and higher water jet pressure in obtaining the higher material removal rate and lower surface roughness[5] Yue et al.[6] optimized the machining parameters in the abrasive water jet turning of alumina ceramic based on the response surface methodology
Current was found to be dominant factor followed by pulse on time and voltage on the tool wear rate (TWR) while pulse on time was found to be dominant factor followed by current and voltage on the surface roughness of the composites
Summary
The vitallium metal matrix is mainly used in medical applications like making of artificial joints, dental and surgical appliances. It was reported that the grit size was the most significant influence factor on surface roughness during abrasive water jet machining of graphite[22] High hardness material such as tungsten carbide, stellite, nimonic, inconel and metal matrix composites can be successfully machined by EDM with a tolerances range of +/- 0.005. The process makes use of the impact of a water jet and abrasives for improving the machinability of the materials such as titanium alloys, ceramics and metal–matrix composites. The effect of machining parameters of the electro discharge machining (EDM) and Abrasive-water jet machining (AWJM) processes on the material removal rate , tool wear rate and surface roughness of the machined surfaces of the vitallium composite material. This molten metal was poured into the die and the required shape and size of specimens (Figure 1) were obtained
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