Design of Experiment for Analyzing Factors Affecting to Diameters of the Hole on SKD11 in the EDM Process

Abstract

The purpose of this research was to study the influence of parameters on the Electrical Discharge Machine (EDM) process on the diameter of tool steel (SKD11). Factors studied were Peak Current, High Voltage, Pulse Time-ON, Pulse Time-OFF, and Servo Sens. the experiment used was fraction factorial experiment 2k-p at a significant level 0.05 AB@The research found that the best optimize parameter to erode the hole diameter of the workpiece is Peak Current 3A, High voltage 4V, Pulse Time-On 10 &mgr;s, Pulse Time-Off 35 &mgr;s and Servo Sens 6 m/s. After adjusting the parameters obtained from the experiment 5 times, have observed the average workpiece diameter of the hole is 6.4585 mm which corresponds to the mathematic equation predict value Y = 6.4588 mm. diff about 0.0003 mm. as to be reliable and practical.