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Non-Newtonian fluid based contactless sub-aperture polishing
CIRP Annals ( IF 3.2 ) Pub Date : 2020-01-01 , DOI: 10.1016/j.cirp.2020.04.093
Wu-Le Zhu , Anthony Beaucamp

Abstract Compliant polishing (e.g. bonnet polishing) is widely used to finish freeform surfaces. However, direct pad/surface contact often causes scratches or embedding of abrasives, especially on metal moulds. Here, the use of non-Newtonian fluid (polymer and starch) to enable contactless polishing without need for a polishing pad is reported. Modelling and analysis are conducted to reveal the influence of fluid rheology on the material removal mechanism. Using #6000 grit alumina, Gaussian shaped removal footprints can be obtained, with a completely scratch-free roughness of 3.9 nm Ra on Nickel, in contrast with 70.3 nm Ra obtained by general water based bonnet polishing.

中文翻译:

基于非牛顿流体的非接触式亚孔径抛光

摘要 顺从抛光(例如阀盖抛光)广泛用于精加工自由曲面。然而,直接垫/表面接触通常会导致划痕或嵌入磨料,尤其是在金属模具上。在这里,报道了使用非牛顿流体(聚合物和淀粉)来实现非接触式抛光而无需抛光垫。进行建模和分析以揭示流体流变学对材料去除机制的影响。使用#6000 粒度氧化铝,可以获得高斯形状的去除足迹,在镍上完全无划痕的粗糙度为 3.9 nm Ra,而通过一般的水基阀盖抛光获得的粗糙度为 70.3 nm。
更新日期:2020-01-01
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