Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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Development of Corrosion Rust Removing Unit for Small Ship Propeller

소형선박용 프로펠러의 부식 녹 제거장치 개발

  • Kim, Gui-Shik (Faculty of Mechanical and Energy System Eng., Cheju National University) ;
  • Han, Se-Woong (Department of Mechanical Eng., Graduate School, Cheju National University) ;
  • Hyun, Chang-Hae (Mechatronics Majors, Cheju Tourism Collage)
  • 김귀식 (제주대학교 기계에너지시스템공학부) ;
  • 한세웅 (제주대학교 대학원 기계공학과) ;
  • 현창해 (제주관광대학 메카트로닉스 계열)
  • Published : 2005.12.01
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Abstract

The materials used in a ship screw propeller are commonly made with brass. The seawater corrosion and seawater cavitation of the screw propeller reduces the propulsive performance of the ship. In screw manufacturing, the corrosion rust of the screw propeller is removed through a hand grinding method. The grinding process produces dust of the heavy metals from the brass. The dust creates a poor working environment that is harmful to the health of the workers. An automatic corrosionrust removing apparatus, using a blasting method, was developed for the improvement of screw polishing conditions and its working environment. The performance of this apparatus was investigated by surface roughness, weight loss rate, hardness, electrochemical corrosion resistance, and cavitation erosion, after removing of the corrosion rust under various blasting conditions. Two medias of alumina and emery were used in this experiment. The surface roughness and hardness of the screw were improved by this apparatus. The electrochemical corrosion potential (Ecorr) and current density (Icorr) were measured by the dynamic polarization method, using a potentiostat,under the conditions of surface polishing with grinding, blasting, wire brushing, and fine sand papering. The test results prove that the new corrosion rust-removing apparatus improves the surface performance of a screw propeller.

Keywords

References

  1. 김기주, 김용규(1994). '유사해수에서 동합금강의 부식특성에 관한 연구', 한국부식학회지, 제23권, 제3호, pp 194-202
  2. 김철, 양원호, 성기득, 고명훈(2003). '쇼트피닝 잔류응력 예측을 위한 유한 요소해석', 제9권, 제1호, pp 198-204
  3. 박경동, 류형주(2005). '표면가공법에 따른 현가장치재의 부식 특성에 관한 연구', 한국자동차공학회, 제13권, 제3호, pp 17-23
  4. 전대희, 문경만, 백태실, 강종호(1992). '해수중에 침지된 콘크리트의 철근의 분극특성', 한국부식학회지, 제21권, 제1호, pp 3-11
  5. 정성균, 김태형(2003). 'Al7075-T6의 최적 쇼트피닝 조건에 관한 연구', 한국항공우주학회지, 제31권, 제7호, pp 63-68
  6. 황재호, 임우조, 정기철(1999). '연강의 캐비테이션 침식-부식 특성에 관한 연구(3)', 한국어업기술학회지, 제33권, 제3호, pp 202-208
  7. Andronikos, G. Valiadis, P. and Vassiliou, P. (1998). 'The Effect of Blasitng Materials on the Corrosion of Protected Steel in Sea Water', Anti-corrosion Methods and Materials, Vol 45, No 3, pp 153-156 https://doi.org/10.1108/00035599810216821
  8. Batis, G. Kouloumbi, N. and Soulis, E. (1998). 'Sandblasting: The Only Way to Eliminate Rust?', Anti-corrosion Methods and Materials, Vol 45, No 4, pp 222-226 https://doi.org/10.1108/00035599810223670
  9. Fukuda, K. Ishizawa, M. Kimura, A. Umino, T. Nakano, I. and Kurose, Y. (1975). 'Protection Method for Corrosion on Manganese Bronze Propellers', The Journal of M.E.S.J, Vol 10, No 10, pp 836-843
  10. Javaherdashti, R. (2000). 'How Corrosion Affect Industry and Life', Anti-Corrosion Methods and Materials, Vol 47, No 1, pp 30-33 https://doi.org/10.1108/00035590010310003
  11. Matsuyama, A. Nishiya, T. Araki, T. and Imada, T. (2001). 'Studies on Propulsive Performance by Marine Fouling of Ship-hull and Propeller', Jounal of Faculty of Fisheries, Nagasaki University, No 82, pp 111-118