Development of Ultra-Short Pulse Power Supply Applicable to Micro-ECM

Yong Jun Zhang; Yong Jun Tang; Xiao Kang Liu; Z.N. Guo; F. Li

doi:10.4028/www.scientific.net/MSF.626-627.369

Paper Titles

Prediction of the Residual Stress in Grind-Hardening with Thermal-Mechanical-Phase Transformation Stress Coupled Analysis
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Study on Numerical Controlled Electrochemical Turning
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Experimental Investigation on Metal Coating by Means of ESD
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Influence of Beam Polarizations on Evaporative Laser Cutting Nonmetallic Materials within High Absorptance
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Development of Ultra-Short Pulse Power Supply Applicable to Micro-ECM
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Fabrication of Customized Bio-Electrode for Neural Stimulation Using Rapid Prototyping Technique
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Automated Fabrication of Complex Shape Metallic Parts Using Mold Decomposed Injection Sculpturing
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Effect of Cutting Parameters on Minimum Quantity Lubrication Machining of High Strength Steel
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Prediction on Residual Stress and Fatigue Life of Magnesium Alloy Treated by Laser Shot Peening
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HomeMaterials Science ForumMaterials Science Forum Vols. 626-627Development of Ultra-Short Pulse Power Supply...

Development of Ultra-Short Pulse Power Supply Applicable to Micro-ECM

Abstract:

A nanosecond pulse power supply for micro-ECM (Electrochemical Machining) has been developed, and the minimum pulse on-time is 50 ns. After the influence of ultra-short pulse on micro-ECM was analyzed, complementary chopper circuit was presented to avoid waveform distortion, which can achieve higher pulse frequency. A fast protect circuit was designed, and its response time is less than 5μs, which can avoid damaging workpiece and electrical components by switching off machining voltage and step motor as soon as a short circuit was detected. A series of ECM experiments using the power supply have been carried out, and results of test have proved that high frequency, short pulse width power supply helps to achieve better quality surface, higher machining accuracy.