DETERMINATION OF MACHINING ALLOWANCE FOR PARTS WITH CHROME COATINGS

Authors

DOI:

https://doi.org/10.24025/2306-4412.2.2021.242339

Keywords:

chrome electrochemical coating, surface roughness, machining allowance, diamond grinding, rod, piston pump

Abstract

The analysis of methods of determination of allowances for machining of coatings is carried out. The surface roughness after diamond round grinding of electrochemical chrome coatings applied in quiet and flowing electrolytes is investigated. It is established that the thickness of the defective layer depends on the method of applying the electrochemical chrome coating. Chrome coating of steel parts in a flowing electrolyte provides a smaller thickness of the defective layer compared to chrome coating in a quiet electrolyte. It is also established that the minimum allowance for obtaining surfaces with minimum roughness after diamond grinding of electrochemical chrome coating depends on the total thickness of the coating and increases with its growth. The scientific novelty of the obtained research results lays in the specification of dependence of the thickness of defective surface layer on the operational layer of chrome electrochemical coatings applied in quiet and flowing electrolytes on cylindrical steel parts to provide obtaining the processed surface with the minimum roughness after diamond round grinding. The practical value lies in the fact that an engineering method for calculating allowances for machining (diamond grinding operation) of cylindrical steel parts with chrome electrochemical coatings has been developed.

Author Biographies

L. Ya. Ropyak, Ivano-Frankivsk National Technical University of Oil and Gas15 Karpatska str., Ivano-Frankivsk, Ukraine, 76019

PhD, Senior Researcher, Associate Professor,

 

M.V. Shovkoplias, Ivano-Frankivsk National Technical University of Oil and Gas

PhD

V.S. Vytvytskyi3, Ivano-Frankivsk National Technical University of Oil and Gas

PhD

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Published

2021-06-22

How to Cite

Ropyak, L. Y. ., Shovkoplias, M., & Vytvytskyi3, V. (2021). DETERMINATION OF MACHINING ALLOWANCE FOR PARTS WITH CHROME COATINGS. Bulletin of Cherkasy State Technological University, (2), 117–127. https://doi.org/10.24025/2306-4412.2.2021.242339

Issue

No. 2 (2021): VISNYK Cherkaskogo derzhavnogo tehnologichnogo universitetu

Section

Materials Science, Technology and Equipment of Modern Machine-building and Food Production

URN

http://vtn.chdtu.edu.uaurn:2306:44552.2021.242339

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Copyright (c) 2021 Любомир Ярославович Роп’як, Максим Володимирович Шовкопляс, Василь Степанович Витвицький

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