Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
권호 표지

A Theoretical and Experimental Study on the Plastic Flow in Porthole Extrusion

포트홀 압출의 소성유동에 대한 이론 및 실험적 연구

  • Published : 2001.10.01
Download PDF
⟨ Previous Next ⟩

Abstract

The paper is concerned with plastic flow in the port and welding chamber of rectangular hollow section extrusion through the porthole die. The extrusion process is analyzed by numerical simulation and experiments in the unsteady state. The effects of types of inlet with and without taper on the flow and extrusion load are mainly discussed and compared by FEA and experiments. Experiments are carried out by using the plasticine as a model material at room temperature. To visualize the plastic flow in the extrusion process, some split dies and punches are designed and manufactured by EDM. The theoretical predictions by FEM are reasonable agreements with experimental results on the deformed configurations and welding lines.

Keywords

References

  1. Extrusion-Processes, Machinery, Tooling Laue, K.
  2. J. Materials Processing Tech. v.49 Experimental Simulation of Meta Flow in Portholedie Extrusion Xie, J. X.(et al.)
  3. J. Materials Processing Tech. v.49 UBA analysis of process of Pipe Extrusion through Porthole-die Xie, J. X.(et al.)
  4. Profiles of Change v.II Design of Hollow Dies for Manufacturing Thin-walled Hollow Sections, 6th International Aluminum Extrusion Technology Seminar Duplancic, I.
  5. 6th Int. Al Extrusion Tech. Seminar, Profiles of Change v.II Analysis of the Deformations that are Active on the Webs of Hollow Dies during the Extrusion Cycle. Analysis Conducted by Finite Elements Rodriguez, R.(et al.)
  6. 6th International Aluminum Extrusion Technology Seminar,Profiles of Change v.II Numerical Simulation in Extrusion Die Design Skauvik, I.(et al.)
  7. 5th International Aluminum Extrusion Technology Seminar,Commitment to Excellence v.I Extrusion Weld Quality Aspects are Now Center Stage Akeret, R.
  8. JSTP v.36 no.414 Effects of Die Shapes on Welding Strength of Extruded Pipes by Porthole Die -Improvemen in Quality of Hollow Extrusion I Takatsuji, N.(et al.)
  9. JSTP v.37 no.423 Inside Diameter Accuracy of Extruded Pipes by Porthole Die-Study on Improvement in Quality of Hollow Extrusion II Murakami, S.(et al.)
  10. JSTP v.37 no.428 Dimentional Accuracy of Rectangular Pipes by 4 Portholes Die - Study on Improvement in Quality of Hollow Extrusions III Murakami, S.(et al.)
  11. JSTP v.38 no.436 Simulation of Rectangular Extruded Pipes by Porthole Die-Study on Improvement in Quality of Hollow Extrusions IV Murakami, S.(et al.)
  12. JMPT v.88 An Effective Split of Flow and Die Deformation Calculations of aluminum Extrusion Mooi, H. G.(et al.)
  13. KAIST 박사학위논문 영역분할에 의한 격자세분화기법을 사용한 3차원 압출공정의 유한요소해석 박근
  14. 99 압출 및 인발 심포지엄 논문집 철도차량 마루부재 압출공정의 3차원 유한요소해석 박근;이영규;양동열;이동헌
  15. 한국정밀공학회 '99 추계학술대회논문집 포트홀 다이를 이용한 중공재의 압출공정해석 이상곤;정충식;김병민;조형호