Corrosion Science and Technology

The Corrosion Science Society of Korea (한국부식방식학회)
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A Study of Damage on the Pipe Flow Materials Caused by Solid Particle Erosion

고체입자 충돌침식으로 인한 배관 재질의 손상에 관한 연구

  • Kim, Kyung-Hoon (Department of Mechanical Engineering, Kyung Hee University) ;
  • Choi, Duk-Hyun (Department of Mechanical Engineering, Kyung Hee University) ;
  • Kim, Hyung-Joon (School of Mechanical and Aerospace Engineering, Seoul National University)
  • 김경훈 (경희대학교 공과대학 기계공학과) ;
  • 최덕현 (경희대학교 공과대학 기계공학과) ;
  • 김형준 (서울대학교 기계항공공학부)
  • Received : 2012.10.12
  • Accepted : 2014.08.21
  • Published : 2014.08.31
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Abstract

Wall thinning can be classified into three types: flow-accelerated corrosion, cavitation erosion and solid particle erosion. This article presents a study of solid particle erosion, which frequently causes damages to power plants' pipe system. Unlike previous studies, this study uses a mechanism to make solid particles in a fluid flow collide with pipe materials in underwater condition. Experiment is conducted in three cases of velocity according to solid-water ratio using the three types of the materials of A106B, SS400, and A6061. The experiments were performed for 30 days, and the surface morphology and hardness of the materials were examined for every 7 days. Based on the velocity change of the solid particles in a fluid flow, the surface changes, the change in the amount of erosion, the erosion rate and the variation in the hardness of carbon steel and aluminum family pipe materials can all be determined. In addition, factor-based erosion rates are verified and a wall-thinning relation function is suggested for the pipe materials.

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References

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