Abstract
This present study deals about the effect of adding wheat husk biomass converted biosilica into the deionized dielectric medium and its machining effects on high performance engineering alloy Ti-6Al-4 V in electro discharge machining process. The biosilica particles were prepared from wheat husk via thermo-chemical method followed using silane treatment. The activated dielectric was prepared via shear stirring by adding considerable amount (0.25, 0.5 and 1.0wt.%) of biosilica particles. The machining characteristics such as material removal rate (MRR), tool wear rate (TWR), surface roughness (Ra) and microstructure were investigated. According to the results the silane treated biosilica of 1.0wt.% in deionized water gives improved MRR with controlled TWR and surface roughness whereas the as-received biosilica in deionized water produced lesser MRR with high surface roughness and tool wear. However beyond 1.0wt.% of biosilica in water may produce undesirable effects on the machining characteristics. The SEM microscopic images revealed smoothly machined surfaces with no heat affected zones for silane treated biosilica-water dielectric. These machining characteristics improved powder activated dielectric fluids are highly recommended when EDM process of hard alloys and plain metals.
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Suresh, K., Karuppasamy, K., Palani, S. et al. Effect of Silane Treated Wheat Husk Biosilica (WHB) Deionized Water Dielectric on EDM Drilling of Ti-6Al-4 V Alloy. Silicon 14, 9143–9151 (2022). https://doi.org/10.1007/s12633-021-01526-1
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DOI: https://doi.org/10.1007/s12633-021-01526-1