Effect of Slurry Temperature Distribution on Semi-Solid Die Casting

Abstract:

Semi-solid alloy slurries with different temperature distributions have diverse flow patterns of the slurries during die casting filling process. This different flow patterns can lead to various degrees of front separation of the slurry metal from the die cavity during die filling process. This separation can result in air entrapment, which is one of the origins for gas porosities and blisters occurred during followed heat treatment. Therefore, in this paper, the effects of slurry temperature distribution on filling patterns during die casting process were investigated. Based on partial filling experiments, positive and negative gradient temperature distribution, together with two homogeneous conditions 575°C, 579°C were compared by computer simulation. The results indicate that the positive gradient temperature condition of 357.0 slurry is more suitable for the semi-solid die casting of the connector, and 7 °C temperature gradient in slurry is appropriate for good filling.

• Periodical: Solid State Phenomena (Volume 256)
• Pages: 107-112
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.256.107
• Online since: September 2016
• Authors: Wen Ying Qu*, Fan Zhang, Jiao Jiao Wang, Xiao Gang Hu, Qiang Zhu
• Keywords: Computer Simulation, Semisolid Slurry, Separation between Die and Slurry, Temperature Distribution

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