Assessing Viscosity in Hydro-Erosive Grinding Process via Refractometry

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2019-08-22 DOI:10.4271/04-12-03-0012

B. R. Heidemann, Gustavo Scherpinski, Luís Victor Muller Fabris, M. Muller, J. Fabris, Giuseppe Pintaude

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Abstract

The manufacturing of diesel injector nozzles requires precision processing to produce multiple micro-holes. An abrasive fluid containing a mixture of mineral oil and hard particles is used for rounding them, ensuring the hydrodynamics of the injection. As verified in a previous investigation, the viscosity of the fluid undergoes uncontrolled changes during hydro-erosive (HE) grinding. Such undesired viscosity changes are detrimental to the process and difficult to assess. The current investigation aims to study the possibility of using the refractive index of the oils used in the HE grinding for assessing their viscosities. A calibration curve correlating the refractive index and viscosity was obtained from the analysis of samples produced by mixing two distinct mineral oils in different proportions. The determined calibration curve was tested with 45 samples of filtered oil, collected directly from the tanks during the HE grinding. The results showed that refractometry is a potential technique for online control of grinding efficiency. Downloaded from SAE International by JosÃ© Fabris, Monday, September 02, 2019

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用折射法评价水蚀磨削过程中的粘度

柴油喷射器喷嘴的制造需要精密加工以产生多个微孔。使用含有矿物油和硬颗粒混合物的研磨液将其磨圆，以确保注射的流体动力学。正如之前的研究所证实的那样，在水力侵蚀（HE）研磨过程中，流体的粘度会发生不受控制的变化。这种不希望的粘度变化对该过程是有害的并且难以评估。目前的研究旨在研究使用HE研磨中使用的油的折射率来评估其粘度的可能性。通过对以不同比例混合两种不同矿物油生产的样品的分析，获得了与折射率和粘度相关的校准曲线。用在HE研磨过程中直接从罐中收集的45个过滤油样品测试确定的校准曲线。结果表明，折射法是一种有潜力的磨削效率在线控制技术。José©Fabris于2019年9月2日星期一从SAE International下载

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.