Factors influencing the gas porosity formation in A438 alloy wheels produced by gravity die casting

Mold parameters, filling, and solidification are the most common causes of casting failures in aluminium alloys. When an aluminium alloy comes into contact with oxygen in the air, it forms an oxide layer on top of the liquid metal in the support furnace. Biofilms form when this oxide layer is broken...

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Bibliographic Details
Main Authors: Abuthakeer, S. Syath, Pandian, A. Alagu Sundara, Natarajan, M. P., Patil, Pravin P., Kaliappan, S., Balaji, V.
Format: Conference Proceeding
Language:English
Subjects:
Aluminum base alloys
Degassing
Die casting
Liquid metals
Porosity
Solidification
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Summary:Mold parameters, filling, and solidification are the most common causes of casting failures in aluminium alloys. When an aluminium alloy comes into contact with oxygen in the air, it forms an oxide layer on top of the liquid metal in the support furnace. Biofilms form when this oxide layer is broken by turbulence. Because of the gas, molten metal retains its porosity throughout the casting process. The gas that entered the casting during filling causes the porosity of the gas during curing. One study investigated the impact of gravity die casting on gas porosity formation when manufacturing alloy wheels A438 to characterise and control elements that occur throughout the gas production process. It was found that casting temperature, degassing time, and furnace volume all changed the porosity of tyre samples and negative pressure test samples.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0132576