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Study of the Productivity and Surface Quality of Hybrid EDM

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Abstract

The development of new, advanced engineering materials and the need for precise prototypes and low-volume production have made the electric discharge machining (EDM), an important manufacturing process to meet such demands. It is capable of machining geometrically complex and hard material components, that are precise and difficult-to-machine such as heat treated tool steels, composites, super alloys, ceramics, carbides etc. Conversely the low MRR limits its productivity. Abrasive water jet machine (AJM) tools are quick to setup and offer quick turn-around on the machine and could make parts out of virtually any material. They do not heat the material hence no heat affected zone and can make any intricate shape easily. The main advantages are flexibility, low heat production and ability to machine hard and brittle materials. Main disadvantages comprise the process produces a tapered cut and health hazards due to dry abrasives. To overcome the limitations and exploit the best of each of above processes; an attempt has been made to hybridize the processes of AJM and EDM. The appropriate abrasives routed with compressed air through the hollow electrode to construct the hybrid process i.e., abrasive jet electric discharge machining (AJEDM), the high speed abrasives could impinge on the machined surface to remove the recast layer caused by EDM process. The main process parameters were varied to explore their effects and experimental results show that AJEDM enhances the machining efficiency with better surface finish hence can fit the requirements of modern manufacturing applications.

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Authors and Affiliations

  1. AISSMS College of Engineering, 1, Kennedy Road, Pune, 411001, Maharashtra, India

    Sandeepkumar Haribhau Wankhade

  2. SGGS Institute of Engineering and Technology, Vishnupuri, Nanded, 431606, Maharashtra, India

    Sunil Bansilal Sharma

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  1. Sandeepkumar Haribhau Wankhade
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  2. Sunil Bansilal Sharma
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Correspondence to Sandeepkumar Haribhau Wankhade.

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Wankhade, S.H., Sharma, S.B. Study of the Productivity and Surface Quality of Hybrid EDM. J. Inst. Eng. India Ser. C 97, 71–76 (2016). https://doi.org/10.1007/s40032-015-0188-7

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  • DOI: https://doi.org/10.1007/s40032-015-0188-7

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