http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Al 후판의 곡면성형 시 치수정밀도 향상을 위한 격자 금형 설계
손영기(Y. G. Son),이찬주(C. J. Lee),윤종헌(J. H. Yoon),이정환(J. H. Lee),손동환(D. H. Son),권일근(I. K. Kwon),김병민(B. M. Kim) 한국소성가공학회 2012 한국소성가공학회 학술대회 논문집 Vol.2012 No.5
A hot forming of large thick AI plate using a grid type die is a process to make a shell plate for the production of a spherical LNG tank. This process is characterized by using a grid typed die with an additional air cooling system for reducing the cooling time of the heated plate after hot forming. The purpose of this study is to suggest the design technique of grid typed die for improvement of dimensional accuracy. Grid type die of this study is designed by spline and DA(Displacement adjustment) method to determine the size of grid and curvature of die. Suggested technique is verified by the experiment of spherical forming for Al5083 thick plate.
LNG 탱크용 Al5083 후판의 열간 곡률 성형해석 및 실험
손영기(Y. G. Son),이찬주(C. J. Lee),윤종현(J. H. Yoon),이정환(J. H. Lee),권일근(I. K. Kwon),김병민(B. M. Kim) 한국소성가공학회 2012 한국소성가공학회 학술대회 논문집 Vol.2012 No.5
A hot forming of large thick AI plate using a grid type die is a process to make a shell plate for the production of a spherical LNG tank. This process is characterized byusing a grid typed die with an additional air cooling system for reducing the cooling time of the heated plate after hot forming. The purpose of this study is to suggest the design technique of grid typed die for improvement of dimensional accuracy. Grid type die of this study is designed by spline and DA(Displacement adjustment) method to determine the size of grid and curvature of die. Suggested technique is verified by the experiment of spherical forming for Al5083 thick plate. A hot curvature forming of thick AI plate using a grid type die is a process to make a shell plate for a spherical LNG tank. This process is characterized by using a grid type die with an additional air cooling system for reducing the cooling time of the heated plate after hot forming. The objective of this study is to establish the FE-analysis technique to predict the thermal deformation and temperature change of Al plate. To verify the efficiency of the FE-analysis technique developed in this study, experiment of the hot curvature forming process is conducted for a I 183×790x20t(mm) model. The results showed that the dimension and temperature of the plate in the analysis agrees well with that of the experiment within 1.25mm and 20.08℃ , respectively.
격자형 금형에 의한 알루미늄 후판 열간성형에서 치수정도 개선을 위한 잔류응력 제어
손영기(Y. K. Son),이찬주(C .J. Lee),윤종헌(J. H. Yoon),이정환(J. H. Lee),손동환(D. J. Son),권일근(I. G. Gwon),김병민(B. M. Kim) 한국소성가공학회 2012 한국소성가공학회 학술대회 논문집 Vol.2012 No.5
A hot forming of aluminum plate using a grid type die is a forming process to make a shell plate for the production of a spherical LNG tank. This process is characterized by using a grid-type die with an additional air cooling system for reducing the cooling time of the heated plate after hot forming. The thermal residual stress caused by deviation of temperature distribution between inside and outside of aluminum plate influences considerably on the dimensional accuracy of product. Shape of the hot formed aluminum plate is recovered by this unexpected residual stress. Thus, the control of temperature condition in cooling step is very important to improve the dimensional accuracy of hot formed aluminum plate. In this study, the FE-analysis of hot forming with grid type die is performed to evaluate the effects of stress distribution of aluminum plate in cooling sten on the dimensional accuracy of final product.