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스피닝 공정을 이용한 일체형 랩 조인트의 제조방법 개발
박형욱(H. W. Park),권정헌(J. H. Kwon),김재수(J. S. Kim),조종래(J. R. Cho) 한국소성가공학회 2010 한국소성가공학회 학술대회 논문집 Vol.2010 No.5
The spinning method was used for developing the connection component of pipe flanges with large diameter. Generally lab joint is manufactured by welding that pipe is jointed with flange plate. The spinning method in this study is an incremental forming process with low cost and environmentally friendliness. The key technology is that flange thickness is not thinner than that off initial pipe. The dies for multi-step spinning are designed by finite element analysis, and the product is manufactured successfully by experiment.
조종래(J.R. Cho),권정헌(J.H Kwon),김창수(C.S. Kim),배찬효(C.H. Bae),김현준(H.J. Kim) 한국마린엔지니어링학회 2010 한국마린엔지니어링학회 학술대회 논문집 Vol.2010 No.4
The purpose of this study is to evaluate the integrity of combined LNG vaporizer. The combined LNG vaporizer is used to transfer the liquified natural gas which temperature is -160℃ and supplied pressure on LNG vaporization mode is 4bar(0.4㎫). In the present work the temperature distribution and thermal stress are calculated by the finite element method. A commercial software(ANSYS 11.0) is used in the structural analysis for combined LNG vaporizer. In design condition, calculated membrane and membrane plus bending stress are lower than allowable stresses based on the ASME boiler and pressure vessel code. In operating condition the results are satisfied with the code limits.
극저온 LNG vaporizer에 대한 구조 건전성 평가
조종래(J.R. Cho),권정헌(J.H. Kwon),김창수(C.S. Kim),배찬효(C.H. Bae) 한국마린엔지니어링학회 2009 한국마린엔지니어링학회 학술대회 논문집 Vol.2009 No.-
The purpose of this study is to evaluate the integrity of LNG vaporizer. The LNG vaporizer is used to transfer the liquified natural gas which temperature is -196℃ and supplied pressure on purge mode is 5bar(0.5㎫). In the present work the temperature distribution and thermal stress are calculated by the finite element method. A commercial software(ANSYS 10.0) is used in the structural analysis for LNG vaporizer. In design condition calculated membrane, and membrane plus bending stress are lower than allowable stresses based on the ASME boiler and pressure vessel code. In operating condition the results are satisfied with the code limits.