Paper Title:
Green Body Behaviour of High Velocity Pressed Metal Powder
  Abstract

High velocity compaction (HVC) is a production technique with capacity to significantly improve the mechanical properties of powder metallurgy (PM) parts. Several investigations indicate that high-density components can by obtained using HVC. Other characteristics are low ejection force and uniform density. Investigated here are green body data such as density, tensile strength, radial springback, ejection force and surface flatness. Comparisons are performed with conventional compaction using the same pressing conditions. Cylindrical samples of a pre-alloyed water atomized iron powder are used in this experimental investigation. The different behaviour of HVC-pressed green bodies compared to conventional pressed green bodies are analysed and discussed. The HVC process in this study resulted in a better compressibility curve and lower ejection force compared to conventional quasi static pressing. Vertical scanning interferometry (VSI) measurements show that the HVC process gives flatter sample surfaces.

  Info
Periodical
Materials Science Forum (Volumes 534-536)
Edited by
Duk Yong Yoon, Suk-Joong L. Kang, Kwang Yong Eun and Yong-Seog Kim
Pages
289-292
DOI
10.4028/www.scientific.net/MSF.534-536.289
Citation
P. Jonsén, H. Å. Häggblad, L. Troive, J. Furuberg, S. Allroth, P. Skoglund, "Green Body Behaviour of High Velocity Pressed Metal Powder", Materials Science Forum, Vols. 534-536, pp. 289-292, 2007
Online since
January 2007
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$32.00
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