http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
구광모(K. M. Ku),오경석(K. S. Oh),서정열(J. Y. Seo),이봉상(B. S. Lee),강권호(K. H. Kang),송창빈(C. B. Song) 한국소성가공학회 2010 한국소성가공학회 학술대회 논문집 Vol.2010 No.10
The quality of aluminum extrudate is decided during extrusion process which involves heat generated mainly by plastic deformation energy and friction between billet and die. The extra heat should be eliminated to appropriate level in order to prevent grain growth of an extrudate. In aluminum industry, the die temperature is managed by nitrogen gas which is safe and relatively cheap. In this study, the flow pattern of nitrogen gas in die cooling system and cooling behavior were analyzed by computational fluid dynamic code, ANSYS CFX 12. The fundamental cooling behavior of die was obtained through the analysis and effective cooling channel design was suggested based on the flow patterns according to gas velocity.
연속형 아트리션 밀링 처리가 UO<sub>2</sub> 분말의 소결성에 미치는 영향
문제선,나상호,강권호,박창제,송기찬,Moon, Je-Sun,Na, S.H.,Kang, K.H.,Park, C.S.,Song, K.C. 한국분말야금학회 2007 한국분말재료학회지 (KPMI) Vol.14 No.1
The effect of a CAM (Continuous Attrition Mill) treatment on the sinterability of ex-ADU $UO_2$ powder was investigated. As the cycles of a CAM increased, the apparent density, specific surface area and O/U of the milled powder increased, but there particle sizes decreased. However the sintered density of the $UO_2$ pellet decreased as the cycles of the CAM increased. It is considered that the decrease of the sintered density is due to the formation of $U_3O_8$, which was produced by a CAM mechanism.