Korean Institute of Surface Engineering

pISSN : 1225-8024 | eISSN : 3399-8403

공학

한국표면공학회지 (49권5호 447-453)

Process Optimization for Life Extension of Electropolishing Solution using Half Round Bus Bar

반구형 부스바를 이용한 전해연마액 수명연장을 위한 공정 최적화

김수한;이승헌;조재훈;임동하;최중소;박철환;
Kim, Soo Han;Lee, Seung Heon;Cho, Jaehoon;Lim, Dong-Ha;Choi, Joongso;Park, Chulhwan;

광운대학교 화학공학과;한국생산기술연구원 그린공정소재그룹;한국생산기술연구원 에너지플랜트그룹;
Department of Chemical Engineering, Kwangwoon University;Green Process and Materials R&D Group, Korea Institute of Industrial Technology (KITECH);Energy Plant Group, Korea Institute of Industrial Technology (KITECH);

DOI : 10.5695/JKISE.2016.49.5.447

Abstract

In this study, we intended to extend the life of electropolishing solution through the reduction of electric resistance by improving the electrolysis efficiency. The optimum conditions were obtained by half round bus bar and Taguchi method. As the main control factors in the electropolishing process, current density, polishing time, electrolyte temperature and flow rate were selected. The electrolyte temperature was the most significant to the electrolysis efficiency. The optimum conditions for the life extension of electropolishing solution were as follows: current density, $45A/dm^2$; polishing time, 6 min; electrolyte temperature, $70^{circ}C$; flow rate, 11 L/min. As a results of ANOVA of SN ratios, it was found that the electrolyte temperature was significant factor at the 90% confidence level.

Keywords

Electropolishing;Half round bus bar;Life extension;SN ratio;Taguchi;