한국정밀공학회지 (Journal of the Korean Society for Precision Engineering)

  • 제21권1호
  • /
  • Pages.32-39
  • /
  • 2004
  • /
  • 1225-9071(pISSN)
  • /
  • 2287-8769(eISSN)
한국정밀공학회 (Korean Society for Precision Engineering)
권호 표지

중공 T형상의 형단조에 관한 연구

A Study on Die Forging of a Hollow T-shaped Part

  • 김현수 (경남대학교 기계설계학과) ;
  • 김용조 (경남대학교 기계자동화공학부)
  • 발행 : 2004.01.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

Traditional forging of a hollow T-shaped part has been applied to forge a solid T-shaped product from a solid billet and then to machine the hollow in that. In a case, a hollow T-shaped part can be forged by backward-extruding from a solid billet. In this study, four types of forging were suggested for manufacture of hollow T-shaped parts. Forging simulations for each of these forging methods were carried out to investigate folding defect, metal flow pattern, effective strain, and forging loads. Experimental works were carried out to be compared with the simulation results. Here, the ratio of the thickness of the hollow tube to that of the flange was selected to investigate a forging defect like folding.

키워드

참고문헌

  1. Kobayashi, S., Oh, S. I., Altan, T., 'Metal Forming and the Finite-Element Method ,' New York, Oxford University Press, 1989
  2. Zienkiewicz, O. C., 'The Finite Element Method,' 4th Ed. McGraw-Hill, New York, 1977
  3. Avizur, B., 'Handbook of Metal Forming Processes,' Wiley, New York, 1983
  4. Balendra, R., and Qin,Y., 'Material-flow Considerations for the Design of Injection Forging,' int. J. Manufacturing Science and Engineering, 1997, Vol. 119, pp. 350-357, 1997 https://doi.org/10.1115/1.2831113
  5. Balendra, R., Qin, Y., 'FE Simulation of the Development of Flaws During Injection Forging,' Int. J. Tools Manufact. Vol. 34, pp.1091-1101, 1994 https://doi.org/10.1016/0890-6955(94)90015-9
  6. Balendra, R., 'Injection-Chamber to Die-Cavity Interface for Injection Forming,' Int. J. Tools Manufact. Vol. 33, No.6, pp. 753-760, 1993 https://doi.org/10.1016/0890-6955(93)90035-S
  7. Colla, D., Patersen, S. B., Balendra, R., and Martins, P. A. F., 'Injection Forging of Industrial Components from Thick-Walled Tubes,' int.J. Manufacturing Science and Engineering, Vol. 119, pp. 537-541, 1997 https://doi.org/10.1115/1.2831184
  8. Balendra, R., Patersen, S. B., and Colla, D., 'Preforming Considerations for the Injection Forging of Tubes,' 11th, Int. Conf. Computer-Aided Prod. Eng. U. K., 1995
  9. Arentoft, M., Patersen, S. B., Rodrigues, J. M. C., Martins, P. A. F., Balendra, R., and Wanheim, T., 'Review of Research into the Injection Forging of Tubular Materals,' J. Mat. Proc. Tech. Vol. 52, pp.460 https://doi.org/10.1016/0924-0136(94)01619-C
  10. Bae, S. W., Kim.Y. J., 'Rigid-Plastic Finite Element Analysis for Extrusion-Forging Process Design of a Hollow Flange-Shaped Part,' Proceedings of ISIM2000, Oct. 4-7, pp. 449-452
  11. Son, K. H., Kim Y. H., Suh Y.S., 'A Study on the Defect of T type Forging Products,' Proceedings of KSPE, pp.952-956, 1997
  12. Kiuchi, M., Chung, H.K. & Yanagimoto, J. 'Analysis of Upsetting of Hollow Billets with Square and Gear-Type Dies,' J. JSTP, Vol.31, pp.907-912, 1990
  13. Cho, H. Y., Choi, J. U., Min, K. S., 'Study on the Forging of Splines with Hollow and Solid Billets,' J. KSPE, Vol. 13, No.1, pp.108-115, 1996
  14. Park, C., Choi, H. J., Hwang, B. B., 'A Process Sequence Design of the Multi-Step Cold Extrusion using Thick-Wall Pipes,' J. KSTP, Vol. 5, No. 3, pp.219-231, 1996
  15. Lee, C. H., and Altan,T., 'Influence of Flow Stress and Friction Upon Metal Flow in Upset Forging of Rings and Cylinders,' ASME J. Eng. Ind., pp. 775-782, 1972
  16. Rao, K. P., and Sivaram, K., 'A Review of Ring-Compression Testing and Applicability of the Calibration Curves,' J. Mater. Process. Technol., Vol. 37, pp.295-318, 1993 https://doi.org/10.1016/0924-0136(93)90098-Q
  17. Lin, Y. T., and Wang, J. P., 'An Investigation into the constant Friction Factor with the Upper-Bound Flow Function Elemental Technique,' J. Mater. Process. Technol., Vol.36, pp.57-68, 1992 https://doi.org/10.1016/0924-0136(92)90238-N