Effect of magnetic field intensity on deposition of copper tool in electro discharge deposition

• Published in: Journal of micromechanics and microengineering 2020-01, Vol.30 (1), p.15007
• Main Authors: Muralidharan, B, Singh, Praveen, Chelladurai, H
• Format: Article
• Language: English
• Subjects: additive manufacturing; electric discharge machine; electro discharge deposition (EDD); simulation
• ISSN: 0960-1317; 1361-6439
• DOI: 10.1088/1361-6439/ab5424

The fabrication of micro products is gradually expanding due to their need in micro feature-based frameworks, which require a multitude of functions to be integrated. Electro discharge deposition (EDD) is an emerging additive manufacturing process to create micro products. In the present paper, simulation of an EDD process has been investigated in the presence and absence of maximum magnetic flux density. In the first stage of simulation, a thermo-physical model has been developed to find the melt volume in single pulse discharge. In the second stage, initially the optimum orientation and location of the magnet to be placed around the EDD plasma are identified, and subsequently, in the presence of maximum magnetic flux density, heavy species transport is used to study the impact of the process on the height and weight of deposition. Experiments are carried out to validate the simulation results. From the results obtained it is observed that the height of deposition is increased by 23.5% in the presence of the magnetic field.