Study on Local Extrusions' Effects on Improvement of Die Casting Prismatic Parts' Forming Quality

Abstract:

This paper analyzes traditional die casting process to find out the reasons that cause shrinkage cavity and porosity defects in casting. An optimized process of die casting by using local extrusion is proposed. A device used in local extrusion which realizes forcing compensating contraction on key parts of crankcase is designed and the parameters of local extrusion process are discussed. Compared the mechanical properties and microstructure of local extrusion used in die casting production with traditional. It shows that local extrusion used in die casting production can not only achieve the aim eliminating shrinkage porosity and cavity of a casting but also can refine grain to improve the mechanical properties.

• Periodical: Applied Mechanics and Materials (Volume 312)
• Pages: 475-479
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.312.475
• Online since: February 2013
• Authors: Wei Gang Zheng, Cun Hong Yin, Yu Hong Yuan, Zhen Min Pan, Chao Tang
• Keywords: Crankcase, Die Casting, Local Extrusion, Metallographic Experiment, Porosity, Shrinkage

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