Experimental Study on Electrode Wear of Diamond-Nickel Coated Electrode in EDM Small Hole Machining

<table class="table-group" id="tab5"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td class="align_left">Parameter</td><td class="align_center">Description</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td class="align_left">Workpiece</td><td class="align_center">Die steel</td></tr><tr><td class="align_left">Electrode</td><td class="align_center">Copper, brass, molybdenum, copper-tungsten alloy (W70) composite tool</td></tr><tr><td class="align_left">Coating material</td><td class="align_center">Nickel, diamond-nickel coating</td></tr><tr><td class="align_left">Processing polarity</td><td class="align_center">Positive polarity</td></tr><tr><td class="align_left">Processing time</td><td class="align_center">3 min</td></tr><tr><td class="align_left">Pulse on</td><td class="align_center">12.5 <i>μ</i>s</td></tr><tr><td class="align_left">Pulse off</td><td class="align_center">7.5 <i>μ</i>s</td></tr><tr><td class="align_left">Discharge breakdown voltage</td><td class="align_center">45 V</td></tr><tr><td class="align_left">Peak current</td><td class="align_center">0.8 A</td></tr><tr><td class="align_left">Electrode diameter</td><td class="align_center">2 mm</td></tr><tr><td class="align_left">Working medium</td><td class="align_center">Deionized water</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Electrode experimental parameters in EDM.</div>

Advances in Materials Science and Engineering

tab5

Table 5

Table 5: Experimental Study on Electrode Wear of Diamond-Nickel Coated Electrode in EDM Small Hole Machining 