Nano and Micromachining

Davim, J. Paulo; Jackson, Mark J.

doi:10.1002/9780470611807

Cited by 26 publications

(1 citation statement)

References 99 publications

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“…12 The material removal rate (MRR) is enhanced by incorporating hard materials such as graphite and tungsten carbide as reinforcement in pure copper through the powder metallurgy route. 13 The machining characteristics (MRR) can be influenced by the EDM cutting conditions using a pure copper electrode; optimum machining conditions are required for increased tool life by controlling tool wear rate (TWR) 14 and surface finish, 15 and optimum parameters are established by response surface methodology (RSM). 16 Predominately, RSM can be employed for multi-objectives scenarios.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the performance of recycled copper swarf tool electrode processed through bound powder extrusion for micromachining

Srinivasan

Mohan

Raghuraman

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part L:

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This experimental study used recycled copper chips as a base material for electrode manufacturing through the additive manufacturing route utilizing the bound powder extrusion (BPE) process. Initially, the copper chips were collected from a conventional machining centre. Then, the chip size was reduced by the two-step milling process (ball-to-powder ratio, 2:1) to attain the micro-sized fine particles around 44 μm, which is the prerequisite for preparing the base material for the BPE process. Subsequently, the input parameters were optimized to a layer thickness of 0.125 mm, nozzle diameter of 1 mm, and printing speed of 20 mm/s by the Box-Behnken design approach and attained a maximum relative density of 98.57%. Finally, the BPE-recycled copper tool electrode was manufactured in 0° and 90° orientations. Further, the electrical conductivity of the tool, material removal rate, tool wear rate, and surface roughness of the machined surface of manufactured components were evaluated and compared for BPE-90°, BPE-0°, and conventional tools. The result shows that the BPE-90° tool electrode performs better than BPE-0° and conventional tools.

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