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Extensive studies have shown pulse energy as a determinant of fatigue limits in wire-cut EDM, yet the individual effect of energy input characteristics remain ambiguous. Current research aims to understand how the discharge energy in the form of thermal load interacts with the material and leads to surface modifications. Experimental investigations and crater simulations prove that pulse duration is decisive for surface integrity. To improve the functional performance of steel and cemented carbide tools cut by Wire EDM, the insight of applying high peak current over the shortest possible duration has profound implications for process optimisation and future generator technologies.
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Maradia et al. (2020) studied this question.
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