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Investigation of the effect of liquid metal quality on feedability in casting of A356 aluminum alloys

Mehmet Tokatlı, Emin Uslu, Murat Çolak, Çağlar Yüksel


The use of aluminum in the foundry industry is basically in two different ways, from ore and scrap materials. It is very advantageous to use aluminum as secondary ingots through recycling from scrap material due to the energy inputs generated in production. However, liquid metal quality is important in the use of secondary aluminum. Because, in order to produce quality parts, it is necessary to have it free from iron-containing intermetallic phases, bifilms such as dissolved hydrogen, and inclusions that may be present in aluminum. In cases where adequate cleaning cannot be performed, the casting properties affect the final product properties in many ways. In this study, the effect of changing scrap rate and liquid metal cleaning on the feedability of A356 aluminum casting alloy was investigated. The rotary degassing method was used in the liquid metal cleaning process. Castings were made into standardized permanent molds known as duck feet molds. It has been determined that the casting of the liquid metal with cleaning can be in high quality compared to without cleaning case. Additionaly, the increase in the amount of scrap in the castings without cleaning adversely affects the feedability.

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