$\require{mediawiki-texvc}$
  • 검색어에 아래의 연산자를 사용하시면 더 정확한 검색결과를 얻을 수 있습니다.
  • 검색연산자
검색연산자 기능 검색시 예
() 우선순위가 가장 높은 연산자 예1) (나노 (기계 | machine))
공백 두 개의 검색어(식)을 모두 포함하고 있는 문서 검색 예1) (나노 기계)
예2) 나노 장영실
| 두 개의 검색어(식) 중 하나 이상 포함하고 있는 문서 검색 예1) (줄기세포 | 면역)
예2) 줄기세포 | 장영실
! NOT 이후에 있는 검색어가 포함된 문서는 제외 예1) (황금 !백금)
예2) !image
* 검색어의 *란에 0개 이상의 임의의 문자가 포함된 문서 검색 예) semi*
"" 따옴표 내의 구문과 완전히 일치하는 문서만 검색 예) "Transform and Quantization"
쳇봇 이모티콘
안녕하세요!
ScienceON 챗봇입니다.
궁금한 것은 저에게 물어봐주세요.

논문 상세정보

알루미늄 7075 복합압출재에 대한 공정해석 및 설계

Analysis and Design of a Forming Porcess for Combined Extrusion with Aluminum AIIoy 7075

Abstract

A Combined extrusion operation consists of forward and backward extrusion forming and it is possible to make the process be simple by employing it. But the metal flow pattern induced by the operation is hard to analyze accurately because the flows are non-steady, which have at least two directions dependent upon each other. So engineers in the industrial factories had conducted the two extrusion operations separately. A new process was designed by the industrial expert for forming of an alu-minum preform using the combined extrusion operation. In this study, experiments and finite element analysis was carried out to determine the process parameters. Through the preliminary experiment, it was shown that warm forming condition was more desirable than cold or hot ones. And optimal shape of initial billet could be also determined. From the compatibility test, bonde-lube was chosen as the optimal lubricant and 20$0^{\circ}C$ as the material temperature by the inspection of micro-structure. The operation was simulated by the rigid-plastic finite element method to examine the metal flow. Disap-pearing of dead metal zone was observed as the punch fell down and desirable shape was obtained from the one operation. As a result of this study, 7 operations could be reduced and 225% of material saved.

저자의 다른 논문

참고문헌 (11)

  1. Anlaysis of Corxustence of Two Kinds of Macro-Defects in Cup-Cup Axisymmetric Combined Extrusion , Li, Miaoquan;Wu, Shichun , Chinese Journal of Aeronautics / v.3,pp.58-66, 1990
  2. 상하컵형인 전후방압출 공정에 관한 실험적 연구 , 김영득;한철호 , 한국소성가공학회 / v.3,pp.291-301, 1994
  3. Analysis of Combined Backward/ Forward Extrusion , B. Avitzur;W.C. Hahn;M. Mori , Trans. of the ASME / v.,pp.438-445, 1976
  4. Deformation Flow and Pressure During Bar-Bar Combined Extrusion , Wu, Shichun;Li, Wenya , Journal of Northwestern Polytechnical Univ. / v.8,pp.85-94, 1990
  5. 상계해법에 의한 축대칭 후방압출의 소성변형해석 , 한철호 , 대한기계학회지 / v.13,pp.330-336, 1989
  6. Evaluation of Lubrication and Friction in Cold Forging using a Double Backward Extrusion Process , J.Y. Lee;T. Altan , J. of Mater. Proce. Tech. / v.33,pp.95-108, 1992
  7. Analysis of Combined Backward/ Forward Extrusion by the Finite Element Method , A.K. Tayal , Int. Conf. on Nume. Methods in Industrial Forming Process Swans / v.,pp.247-255, 1982
  8. Finite Element Analysis of Metal Forming Processes with Arbitrarily Shaped Dies , S. I. Oh , Int. J. Mech. Sci. / v.24,pp.479-493, 1982
  9. S. Kobayashi;s.I. Oh;T. Altan , Metal Forming and the Finite Element Method / v.,pp., 1989
  10. 孫良産 , 金型設計 / v.,pp.388-397, 1988
  11. Metal Flow Control in Cold Simultaneous Forward/ Backward Extrustion , H.H.Lin;K. Kawakami;H. Kudo , Annals of CIRP / v.37,pp.231-234, 1988

이 논문을 인용한 문헌 (0)

  1. 이 논문을 인용한 문헌 없음

원문보기

원문 PDF 다운로드

  • ScienceON :

원문 URL 링크

원문 PDF 파일 및 링크정보가 존재하지 않을 경우 KISTI DDS 시스템에서 제공하는 원문복사서비스를 사용할 수 있습니다. (원문복사서비스 안내 바로 가기)

상세조회 0건 원문조회 0건

DOI 인용 스타일