Non-Newtonian fluid based contactless sub-aperture polishing
Non-Newtonian fluid based contactless sub-aperture polishing
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DOI：
10.1016/j.cirp.2020.04.093
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发表时间：
2020-01-01
影响因子：
4.1
通讯作者：
Beaucamp, Anthony
中科院分区：
文献类型：
--
作者：
Zhu, Wu-Le;Beaucamp, Anthony
合规抛光（例如阀盖抛光）广泛用于精加工自由曲面。然而，垫/表面的直接接触通常会导致划痕或磨料嵌入，特别是在金属模具上。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，而不需要抛光垫。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 粒度的氧化铝，可以获得高斯形状的去除足迹，镍上完全无划痕的粗糙度为 3.9 nmRa，而通过一般水基阀盖抛光获得的 70.3 nm Ra 则相反。 (C) 2020 CIRP。由爱思唯尔有限公司出版。保留所有权利。
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 nmRa on Nickel, in contrast with 70.3nm Ra obtained by general water based bonnet polishing. (C) 2020 CIRP. Published by Elsevier Ltd. All rights reserved.