Research on the Electropolishing Process of Stainless Steel by Brush

Zhaoyang Li ； Xinkuan Liu ； Qi Wang ； Ke Zhang ； Zhihui Yao ； Shimin Zhou

《International Core Journal of Engineering》 9卷6期 (2023/06) Pp. 55-64

https://doi.org/10.6919/ICJE.202306_9(6).0008

摘要

The brush electropolishing process is the actual industrial production of equipment used in the currently limited reference, to guide future industrial production, brush electropolishing experiments on SUS 304 stainless steel plates, first selected the liquid flow, after the use of the single‐factor method were studied different current density, polishing time, temperature three process parameters on SUS 304 stainless steel after electro‐polishing treatment. The effect of the surface quality of SUS 304 stainless steel after electropolishing was investigated using a single‐factor method, and the difference in roughness Ra before and after electropolishing was used to determine the optimum process parameters. Based on the single‐factor results, orthogonal experiments were carried out to find that the influence of each process parameter on the difference in roughness was ranked as current density > temperature > polishing time. The final results show that when the current density is 42 A/dm2, the electrolyte temperature is 50 °C and the polishing time is 105 s, the surface quality of the sample after electropolishing is very good and the final roughness is 0.064 μm, which is mirror bright and the corrosion resistance is greatly improved compared to that before electropolishing, which provides a basis for the use of the brushing process in the future.

關鍵字

Stainless Steel ； Electropolishing ； Surface Treatment ； Electro‐brushing ； Corrosion Resistance

參考文獻

H.C. H, P.S. Kao and Y.F. Chen: Electropolishing of 316L Stainless Steel for Anticorrosion Passivation, Journal of Materials Engineering and Performance, vol. 10 (2001), 414-418.

Eliaz N, Nissan O: Innovative processes for electropolishing of medical devices made of stainless steels, Journal of Biomedical Materials Research Part A, vol. 83A (2007), 546-557.

Nazneen F, Galvin P, Arrigan D W M, et al. Electropolishing of medical-grade stainless steel in preparation for surface nano-texturing, Journal of Solid State Electrochemistry, vol.16 (2012), 1389-1397.

Núñez P J, García-Plaza E, Hernando M, et al. Characterization of Surface Finish of Electropolished Stainless Steel AISI 316L with Varying Electrolyte Concentrations, Procedia Engineering, (2013), No.63, 771-778.

Lewis F, Horny P, Hale P, et al. Study of the adhesion of thin plasma fluorocarbon coatings, Journal of Physics D: Applied Physics, vol.41 (2008): No.4.