DOI QR코드

DOI QR Code

Steel Surface Uniformity Assesment Method for Electrocoating by Applying Low Current and Voltage

표면전류분석을 이용한 전착도막의 표면 균질성 평가

  • 양원석 (현대제철 응용기술개발팀) ;
  • 이창용 (인하대학교 신소재공학부) ;
  • 정유동 (인하대학교 신소재공학부) ;
  • 문만빈 (인하대학교 신소재공학부) ;
  • 황운석 (현대제철 응용기술개발팀)
  • Received : 2013.11.19
  • Accepted : 2013.12.20
  • Published : 2013.12.31

Abstract

When the automotive body enters an electrocoating tank while applying an electric current, its steel surface is exposed to a very low induced current. Consequently, surface defects of coating may arise if the steel surface has lack of electric uniformity due to local defects such as local oxide. In this study, we investigated the preceding assessment methods to evaluate steel susceptibility of the low induced current during electrocoating before mass production. Prior to general electrocoating, we applied low constant voltage such as 3V or low constant current densities such as $0.35mA/cm^2$ and $0.50mA/cm^2$. In result, we confirmed that such methods were efficient for assessing steel susceptibility of low induce current during electrocoating.

Keywords

References

  1. G. Fettis, Automotoive Paint and Coatings, p.28 VCH (1995).
  2. E. Almeida, I. Alves, C. Brites, L. Fedrizzi, Prog. Org. Coat. 46, 8 (2003). https://doi.org/10.1016/S0300-9440(02)00144-3
  3. H. S. Park, POSCO Research, 12, 96 (2007).
  4. K. Ellwood and J. L. Tardiff, Development of a Full Vehicle Electrocoat Paint Simulation Tool, SAE2007-01-0468 (2007).
  5. N. Sato, S. Tanaka, ISIJ 72, 852 (1086)
  6. N.Vatistas, N. Marcetic, Prog. Org. Coat. 38, 127 (2000). https://doi.org/10.1016/S0300-9440(00)00084-9

Cited by

  1. Sonication-triggered zero-order release by uncorking core-shell nanofibers vol.288, pp.None, 2013, https://doi.org/10.1016/j.cej.2015.11.095