Abstract
Magnesium alloy is considered as difficult-to-machine material due to low melting point which is 650°C and this metal is only stable below its melting point. The spark erosion process is an alternative machining method to process magnesium alloy. However, conventional electro-discharge machining (C-EDM) suffers of inconsistent machined surface quality. The powder mixed electro-discharge machining (PM-EDM) method may lead to improve machined part surface finish. The objective of this chapter is to analyze the surface quality of magnesium alloy processed using C-EDM and PM-EDM method. It is hypothesized that the surface quality of magnesium alloy processed using PM-EDM method will be smoother than C-EDM method. In C-EDM experiments, the factors involve peak current (38, 47, and 55 A), gap voltage (80, 220, and 320 V), pulse on-time (16, 32, and 64 μs), and pulse off-time (128, 256, and 512 μs). In PM-EDM experiments, the factors involve zinc powder concentration (1, 2, and 3 g/l), peak current (38, 47, and 55 A), pulse on-time (16, 32, and 64 μs), and pulse off-time (128, 256, and 512 μs). The lowest surface roughness obtained from C-EDM experiment was 5.926 μm and the lowest surface roughness obtained from PM-EDM experiment was 4.873 μm. Smoother machined surface was obtained from PM-EDM method.
| Original language | English |
|---|---|
| Title of host publication | Conventional and Powder Mixed Electro-Discharge Machining |
| Subtitle of host publication | Biomedical Applications |
| Publisher | CRC Press |
| Pages | 83-99 |
| Number of pages | 17 |
| ISBN (Electronic) | 9781040104620 |
| ISBN (Print) | 9781032452760 |
| DOIs | |
| State | Published - 2 Sep 2024 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2025 selection and editorial matter, Ahmad Majdi Abdul-Rani, Masdi Muhammad, T V V L N Rao, Saeed Rubaiee, Anas Ahmed, and Mohd Danish. All rights reserved.
ASJC Scopus subject areas
- General Engineering
- General Biochemistry, Genetics and Molecular Biology
- General Materials Science
- General Environmental Science