PRODUCTIVITY AND WORKPIECE SURFACE INTEGRITY WHEN WEDM AEROSPACE ALLOYS USING COATED WIRES

By M. Antar, S. Soo, D. Aspinwall, D. Jones, R. Perez. 2011

143 citations recorded by the source corpus.

Following a brief review of recent minimum damage EDM pulse generator developments, experimental data is presented for workpiece productivity & integrity when WEDM Udimet 720 nickel based superalloy and Ti-6Al-2Sn-4Zr-6Mo titanium alloy, using Cu core coated wires (ZnCu50 and Zn rich brass). Up to a 70% increase in productivity was possible compared to when using uncoated brass wires with the same operating parameters. Surfaces measuring ∼ 0.6 μm Ra, with near neutral residual stresses and almost zero recast were produced following two trim passes. Cross-sectional micrographs of specimens following rough machining (∼180mm2/min) showed the recast to be < 7 μm thick (up to 11 μm for uncoated wire), with comparable results for both alloys. Surface cracking, when evident, was restricted to within the recast layer.

Subfields: Biomedical Engineering, Electrical and Electronic Engineering, Mechanical Engineering

View Paper: https://www.semanticscholar.org/paper/94d06b8f0cd9e97570d000d4407d8cee542849ff

Citations in the corpus

• Turbomachinery component manufacture by application of electrochemical, electro-physical and photonic processes (2014, unknown): “Cylindrical electrodes are used with through flushing capability, material removal occurring via transient arcing through an electrolyte, though not one containing sodium silicate, see schematic in Fig.”
• Wire electro-discharge machining of titanium alloy (2013, unknown): “They focused on aerospace materials [27].”