Surface modification using Electric Discharge Machining (EDM) with powder addition
Powder mixed electrical discharge machining (PMEDM) is one of the recent innovations for the enhancement of the capabilities of EDM process. In this study, the effects of powder addition on the surface modification of mild steel were investigated. Copper tungsten electrode was used in the machini...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Trans Tech Publications Ltd., Switzerland
2011
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/7043/ http://irep.iium.edu.my/7043/ http://irep.iium.edu.my/7043/ http://irep.iium.edu.my/7043/1/Published_Singapore.pdf |
| Summary: | Powder mixed electrical discharge machining (PMEDM) is one of the recent innovations
for the enhancement of the capabilities of EDM process. In this study, the effects of powder
addition on the surface modification of mild steel were investigated. Copper tungsten electrode was
used in the machining. Two different powders namely TiC and Al2O3 were used in the study with
kerosene as the dielectric medium. The powder types and currents were manipulated to study their
effects on the machined surface. The results show that increasing the current leads to increase in
recast layer thickness, and the cracks. The Al2O3 powder gave higher layer thickness than TiC
powder. TiC Powder addition also produced higher hardness, more tool material and carbon
depositions on the work surface than Al2O3 powder. |
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