International Journal of Precision Engineering and Manufacturing

Korean Society for Precision Engineering (한국정밀공학회)
권호 표지

A Study on the Effect of Powder Forging for Cup-shaped Product

  • Park, Chul-Woo (Dept. of precision mechanical engineering, Pusan National University) ;
  • Park, Jong-Ok (Dept. of precision mechanical engineering, Pusan National University) ;
  • Kim, Young-Ho (School of mechanical engineering, Pusan National University)
  • Published : 2002.10.01
Download PDF
⟨ Previous Next ⟩

Abstract

The purpose of this paper is comparing the forging effect according to the shape of preforms of cup shaped powder forging product, and extending the application of powder forging technology to more complicated cup-shaped products like pistons. In order to achieve this, preforms are provided by compacting, sintering, and machining to 5 different shapes, then forged to the final shape of products. The workability for sintered aluminium powder material was examined and confirmed its slope was 0.5 as known. Density and strain loci of forged products are also evaluated and compared. On the basis of the results, the most effective shape of preform was proposed. The preform for the piston which is 50mm in diameter was prepared and hot forged successfully to the final product.

Keywords

References

  1. J. H. Lee., S. Y. Lee., Y. S. Lee., 'Automotive parts net shape forging technology,' Pro. of '98 Korea-German Technomart for Automotive Technologies, PNU, pp. 275-288, Sept. 22-23, 1998
  2. C. L. Downey., H. A. Kuhn., 'Designing P/M Preforms for Forging Axisymmetric Parts,' International Journal of Powder Metallurgy and Power Tectnology, Vol. 4, pp. 128-135, 1975
  3. Iwata. Y., Mae. S., Urai. Y., Tsunoda. T., 'Aluminum Alloy having an Excellent Forgeability,' United States Patent, P. N. 4889557, Dec. 26, 1989
  4. J. H. Lee., Y. S. Lee., H. S. Chung., 'Development of Bevel Gear by Powder Forging Process,' journal of Korean Powder Metallurgy Institute, Vol. 4, No. 4, pp. 258-267, 1997
  5. Danninger. H., 'Sintered Aluminium camshaft belt pulleys,' M. P. R. pp. 46-52, June 1993 https://doi.org/10.1016/0026-0657(93)90685-L
  6. S. K. Suh et al., 'The Development of Aluminium Sintering Parts Manufacturing Process by Powder Forging Method,' Korea Institute of Machinery & Materials
  7. N. H. Han., J. H. Oh., D. N. Lee., 'A Study on forging Analysis Limit with Porous Sintered Metal,' Progress of Forging Technology, The Second Forging a symposium, pp. 64-71, 1995
  8. H. A. Kuhn., B. L. Ferguson., 'Powder Forging,' Metal Powder Industries Federation, pp. 92-99, 1990