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A Study on the Anti-Corrosion Paint(EH 2350) Compatibility Verification for Naval Surface Vessels's Cavitation

캐비테이션 발생에 따른 해군 수상함정 방청도료(EH 2350) 적합성 검증에 관한 연구

  • Choi, Sang-Min (Defence Agency for Technology and Quality 2nd Naval Sea Systems Team) ;
  • Lee, Ji-Hyeog (Defence Agency for Technology and Quality 2nd Naval Sea Systems Team) ;
  • Beak, Yong-Kawn (Defence Agency for Technology and Quality 2nd Naval Sea Systems Team) ;
  • Jeong, Hyeon-Seob (Defence Agency for Technology and Quality 2nd Naval Sea Systems Team)
  • 최상민 (국방기술품질원 함정센터 2팀) ;
  • 이지혁 (국방기술품질원 함정센터 2팀) ;
  • 백용관 (국방기술품질원 함정센터 2팀) ;
  • 정현섭 (국방기술품질원 함정센터 2팀)
  • Received : 2019.01.28
  • Accepted : 2019.05.03
  • Published : 2019.05.31

Abstract

The naval surface vessels, which were often exposed to harsh marine environment, tended to be corrosive due to military operations on various sea-areas and courses. Although R.O.K Navy applied various methods to protect further corrosion, the hull corrosion occurred due to cavitation were found on the naval surface vessels at regular and occasional docking. Hull corrosion was a critical factor directly to affect the lifetime of ships and their operational capabilities adversely. In this paper, EH 2350, which was the main anticorrosion paint used by R.O.K. Navy, was compared with DuraTough DL by used by the U.S Navy to collect materials related to anti-corrosion paint. In addition, the paint compatibility verification was conducted through wear abrasion test. Assuming that it was exposed to sea-environment various both abrasion cycle and weight for objective verification. by varying both the abrasion cycles and weights. In this study, the reliability of the EH 2350 conformity, which was used in Naval surface vessels, was secured.

군의 수상함정은 다수 해역에서 작전 업무 수행을 실시하며, 부식이 되기 쉬운 가혹한 환경에 노출되어 있다. 해군 운용 함정들은 부식을 방지하기 위하여 여러 가지 방법의 방식 기술을 적용하고 있으나, 캐비테이션에 의한 선저구조물에 부식 및 손상이 지속적으로 발생한다. 선체의 부식은 함 작전운용성능 저하 및 함 수명에 직접적인 영향을 미칠 수 있는 요소로서 함정 선체의 방식은 반드시 필요하다. 본 연구에서는 해군에서 운용중인 함형별로 사용하는 방청도료 자료를 수집 및 분석하여, 그 중 주 방청도료로 사용하고 있는 EH 2350과 미 해군에서 선저 구조물 보호를 위하여 사용하고 있는 특수도료인 금속보수제 DuraTough DL과 특성 비교 및 내마모성 시험을 통해 적합성 검증을 실시하였다. 객관적인 검증을 위하여 함이 해수 환경에 노출된 것으로 고려하여 마모 cycle과 마모 하중 조건을 다수 설정하여 검증을 실시하였다. 본 연구를 통하여 해군 수상함정에 일반적으로 적용되는 방청도료(EH 2350)의 적합성에 대한 신뢰성을 확보할 수 있을 것이다.

Keywords

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Fig. 1. The case of corrosion rudder of OO ship

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Fig. 2. Paint case of DuraTough DL in U.S Navy ship

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Fig. 3. Result on film thickness (a) EH 2350, (b) DuraTough DL

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Fig. 4. Test specimen of EH 2350(1-A~1-E)(a)back (b)front

SHGSCZ_2019_v20n5_7_f0005.png 이미지

Fig. 5. Test specimen of DuraTough DL(2-A~2-E)(a)back (b)front

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Fig. 6. Picture of wear abrasion test(a)EH 2350(#1-E) (b)DuraTough DL(#2-D)

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Fig. 7. Result on abrasion test

Table 1. Data Sheet of Paint

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Table 2. Dry coat thickness of Naval Surface Vessels

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Table 3. Data Sheet of DuraTough DL

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Table 4. Film thickness and test criteria of test specimen

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Table 5. Result on abrasion test

SHGSCZ_2019_v20n5_7_t0005.png 이미지

References

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