Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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A study on the Deformation of Variable Reactor / Capacitor for High-frequency Welder Due to the Change on the Velocity of Coolant

냉각수 유속 변화에 따른 고주파 용접기용 가변 리엑터 / 커패시터의 변형에 관한 연구

  • Kook, Jeong-Han (Dept. of Mechanical Engineering, Korea University of Technology and Education) ;
  • Park, Gwang-Jin (Dept. of Mechanical Engineering, Graduate School, Kongju University) ;
  • Kim, Key-Sun (Div. of Mechanical &Automotive Engineering, Kongju University)
  • 국정한 (한국기술교육대학교 기계공학부) ;
  • 박광진 (공주대학교 기계공학과) ;
  • 김기선 (공주대학교 기계자동차공학부)
  • Received : 2011.08.30
  • Accepted : 2011.10.06
  • Published : 2011.10.31
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Abstract

In this paper, variable reactor and capacitor for high-frequency welder are analyzed by optimum design. As the polar panel of high-frequency welder has the role of condenser, the material with the high rate of induced electricity has to be selected in order to manufacture the condenser with the great power cut. And the area of polar panel must be large and the gap between panels must be thin. On the contrary, the resistance is generated and the heat is happened because the large current is flown. To prevent the thermal deformation of this polar panel, the temperature can be lowered by using cooling water and so on. At this point, the speed of cooling water due to deformation and temperature of polar panel can be optimized.

본 논문에서는 고주파 용접기의 가변 리엑터 및 커패시터를 해석하여 최적화 설계 하였다. 고주파 용접기의 극판 부분은 콘덴서의 역할을 하기 때문에 큰 정전 용량의 콘덴서를 만들기 위해서는 유전율이 큰 재료의 선택과 극판의 면적을 크게 하고, 극판의 간격을 얇게 하여야 한다. 하지만 많은 전류가 흐르기 때문에 저항이 발생하여 열이 발생하게 된다. 이러한 극판의 열 변형을 막기 위하여 냉각수 등을 이용한 방법으로 극판의 열을 식힌다. 이때 극판의 변형 및 온도에 따른 냉각수의 속도를 최적화 하였다.

Keywords

References

  1. Yu. I. Pashkov and V. A. Ivanov, "Stability of the mechanical properties of welds along pipes butt-joind by resistance welding with the use of high-frequency current", Metallurgist, Vol. 49, Nos. pp11-12, 2005. https://doi.org/10.1007/s11015-005-0042-x
  2. Graphs Subjects Electric welding, "Pulse frequency modulation, Oscillations, Resonanc", Journal Science & Technology of Source, Vol. 14, Issue 8, pp740-746, Nov, 2009.
  3. K. Tokihiko,and H. Yoshinori, "Development of low spatter CO2 arc welding process with high frequency pulse current", Science and Technology of Welding and Joining, Vol. 14 No 8, pp 740-746, 2009. https://doi.org/10.1179/136217109X449238
  4. Z. M. Zhu, W. K. Wu and Q. Chen: "Effective control approach on molten droplet size in waveform controlled short circuit CO2 arc welding", Sci. Technol. Weld., (1), pp 55-62, Dec,. 2007.
  5. D. Cuiuri, J. Norrish and C. Cook: "New approaches to controlling unstable gas metal arc welding", Aust. Weld. J., pp 47, 2002.
  6. Ramirez et al., "Min-max predictive control of a heat exchanger using a neural network solver". IEEE Transactions on Control Systems Technology. v12 i5. pp 776-786, 2004. https://doi.org/10.1109/TCST.2004.826972
  7. M. Tarafdar Haque, A. Atashi, "A simple arc starter and arc stabilizer circuit for inverter based arc welding power supply", Proceedings of the 5th WSEAS inter. conf. on Applications of electrical engineering, pp 1-5, 2006.