On the Defects in Injection-Moulded Technical Ceramics

Abstract:

A heated sprue device for ceramic injection moulding was used to research the defects in injection-moulded technical ceramics. By use of the heated sprue device, the problem of sprue solidification was resolved and the density of the injection moulding specimens was increased while the defects eliminated. The influence of the processing parameters on the defects of the injection molding specimens was investigated in detail by X-ray radiography camera and photograph. It turns that the sprue solidification time has much influence on the defects in injection-moulded technical ceramics. Reasons causing the results above were also analyzed. Based on the research, bars of 20mm in diameter without macroscopic defects and turbine blade of fine property with Si3N4/SiC(w) materials were prepared by injection moulding.

• Periodical: Key Engineering Materials (Volumes 336-338)
• Pages: 1025-1027
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.336-338.1025
• Online since: April 2007
• Authors: Xin Gang Yu, Lan Yun Liu, Yan Bin Zuo, Zhi Peng Xie, Bo Lin Wu, Jin Long Yang, Jian Bao Li, Yong Huang, Lin Wang, Yi Gong
• Keywords: Ceramic, Defect, Injection Molding, Injection Parameter

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