graduate student from 01.01.2021 until now
Bryansk, Bryansk, Russian Federation
UDC 621.357.77
UDC 533.69.046
Russian Library and Bibliographic Classification 344
The technological process of galvanic nickel plating using electrochemical grinding and subsequent re-coating is considered. A comparative analysis of the roughness of coatings on detachable electrical contact connectors manufactured at the enterprise and those treated using electrochemical grinding and re-nickel plating technology is performed. Three-dimensional models and profile diagrams of the studied samples of both the manufacturer's production and contact electrical connectors treated using this technology are presented. The problems that arise when applying coatings at the manufacturing plant are shown, as well as the advantages of the galvanic nickel plating using electrolysis, while applying electrochemical surface grinding, which is the reverse process of electroplating metals. It includes partial electrochemical surface grinding followed by re-nickel plating, which helps to increase the actual contact area between electrical connectors, improve electrical conductivity and increase the coefficient of friction at rest, and also increases the service life of vibration-prone all-in-one connectors and detachable connectors in general. The analysis of the obtained values of the arithmetic mean deviation of the profile, the maximum distance between the line of protrusions and the line of profile depressions, the parameter of asymmetry, the average step of the irregularities and the average step of the local protrusions of the profile was also carried out. The presented surface, according to the studied roughness parameters shows the least number of cracks, deep scratches and dents on the product. This, in turn, helps to increase electrical conductivity, improve the surface connection of electrical contact connectors, reduce the resistance when connecting contacts and smooth out micro-dimensions.
tribology, electroplating, coating, connector, grinding
1. Derbush DA, Shalygin MG, Yevtukh ES. Overview of technologies to improve performance criteria of contact electric connectors. Transport Engineering. 2024;10:4-11. doi:https://doi.org/10.30987/2782-5957-2024-10-4-11.
2. Alafieva MA, Sosnovskaya NG, Korchevin NA. Gloss–forming reagents for producing shiny nickel coatings. Modern Technologies and Scientific and Technological Progress. 2022;9:3-4.
3. Titova IV, Panin VI, Kotenko AA, Mochalov DYu. Proceedings of the International Scientific and Practical Conference of Young Scientists and Specialists Dedicated to the 110th Anniversary of the Voronezh State Agrarian University named after Emperor Peter I, November 10-11, 2022: Characteristics of the Main Types of Coating; Voronezh: Voronezh State Agrarian University named after Emperor Peter I; 2022.
4. Zvyagintseva NV, Kravtsova YuG. Influence of electrolysis modes on the microhardness of nickel coatings obtained in sulfamate electrolytes of nickel plating. Proceedings of the VII Regional Scientific and Technical Conference, June 02, 2004: Modern Electrical Technology in the Industry of the Center of Russia; Tula: Tula State University; 2004.
5. Frolov AV, Kireev SYu. Reversible galvanostatic mode of deposition of nickel coatings from acetate-chloride electrolyte. Uspekhi v Khimii I Khimicheskoi Tekhnologii. 2021;35(5(240)):57-59.
6. Elinek TV. Successes of electroplating. Review of the world's specialized literature for 2017-2018. Electroplating and Surface Treatment. 2019;27(3):4-14. DOIhttps://doi.org/10.47188/0869 -5326_2019_27_3_4.
7. Taranets RV, Rogozhin VV, Devyatkina TI. Analysis of modern technologies of chemical deposition of multicomponent nickel coatings. Technologiya Metallov. 2024;6:27-36. DOIhttps://doi.org/10.31044/1684-2499-2024-0-6-27-36.
8. Rybina AA, Chebotarev PA, Osetrov AYu, Zarapina IV. Some issues of applying protective nickel coatings. Conference Proceedings, October 27-29, 202: Topical Issues of Electrochemistry, Ecology and Corrosion Protection; Tambov: IP Chesnokova AV; 2021.
9. Derbush DA, Shalygin MG. Method of electroplating electrical contacts using electric surface grinding. Proceedings of the XV International Scientific and Technical Conference, November 12-13, 2024: Tribology to Mechanical Engineering; Moscow: Mechanical Engineering Research Institute of the Russian Academy of Sciences; 2024.
10. Suslov AG, Derbush DA, Shalygin MG. Electrochemical grinding of galvanized electrical connectors for the raise of static coefficient in the connection. Science Intensive Technologies in Mechanical Engineering. 2025;4(166):40-48. DOIhttps://doi.org/10.30987/2223-4608-2025-4-40-48.
