The Influence of the Tablet Height and Plunger Pressing Velocity on the Final Porosity of Die Casting

Abstract:

With a pressure die casting process, one of the important factors affecting the quality of castings represented by porosity is plunger pressing velocity determines the regime die cavity filling and correct determination of dose mass of a molten metal required for one casting cycle. The mass is given by a total of the net mass of a casting, overflows, a gate system and a metal rest inside a filling chamber (the tablet height). As a rule, the tablet height represents the largest mass ratio regarding the waste metal. A correct determination of the tablet height is important from both economical and qualitative aspect of a pressure die casting process.

• Periodical: Materials Science Forum (Volume 916)
• Pages: 244-248
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.916.244
• Online since: March 2018
• Authors: Stefan Gaspar*, Jan Pasko, Dusan Knezo
• Keywords: Die Casting, Plunger Pressing Velocity, Porosity of Casting, Tablet Height

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