Electrical discharge turning by assistance of external magnetic field, part I: Study of MRR and dimensional accuracy
| Autor: | Reza Teimouri, Aydin Jadidi, Reza Bagherian Azhiri |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
MRR
0209 industrial biotechnology Work (thermodynamics) Materials science lcsh:T Process (computing) Mechanical engineering Dimensional accuracy Rotational speed 02 engineering and technology Edge (geometry) lcsh:Technology Industrial and Manufacturing Engineering Magnetic field Surface integrity 020303 mechanical engineering & transports 020901 industrial engineering & automation Electrical discharge machining 0203 mechanical engineering Machining Mechanics of Materials General Materials Science Electric discharge |
| Zdroj: | International Journal of Lightweight Materials and Manufacture, Vol 3, Iss 3, Pp 265-276 (2020) |
| ISSN: | 2588-8404 |
| Popis: | Hybrid machining process is increasing its importance toward processing of advanced materials with complex geometries. Electrical discharge machining is a type of non-conventional machining process that is extensively used for creating micro and macro features in hard material. The process has capability to be used for flat samples and round bars that former application is more common. In the present study an experimental work has been made to produce sharp edge grooves in round bard made of AISI D2 by electrical discharge turning process. To do so, an external magnetic flux density has been applied around machining gap to enhance the performance measures. Series of experiments have been carried out in order to find effect of magnetic flux density (0, 0.2 and 0.4T), discharge current (5, 10, 15A), pulse on time (600, 800 and 1000μs), and work rotational speed (50, 150 and 250RPM) on material removal rate (MRR) and overcut (OC). Finally optimization has been carried out in different machining modes to find how the optimum value of magnetic field is varied in roughing and finishing. Results indicated that irrespective to the machining regime, application of high intensity magnetic field (i.e. 0.4T) is dominant in increasing the machining rate as well as enhancing the dimensional accuracy. Therefore, the method can be useful for performing the electrical discharge turning process. |
| Databáze: | OpenAIRE |
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