Investigation of factors affecting fluidity in cast molding of Al12Si alloy

Thanks to its many advantageous properties, aluminum (Al) and its alloys find more and more use in the casting industry. For this reason, the usage area is also expanding and some features need to be developed. In this context, the aim of our thesis will be on fluency, which is the first and most important stage of the casting process.The aim of this study is to comparatively examine the parameters affecting the fluidity in the casting of Al12Si alloy, which is widely used industrially, through comprehensive experimental studies and modeling techniques. A permanent mold was used in castings, and pouring height, casting temperature and liquid metal cleanliness, which are thought to affect fluidity, were studied as parameters. As a result of the tests of the obtained samples, the recastability of the recovered Etial-140 Al and the optimum casting conditions were determined. Casting temperatures; 660℃, 700℃ and 740℃ and pouring heights; 50 mm, 100 mm and 150 mm were selected. It was determined that all selected parameters had a significant effect on fluency. According to the findings obtained from the primary ingot, the liquid metal advancement distance in the casting performed at 740℃ with a pouring height of 100 mm and a section thickness of 8 mm was 300 mm, while it was 207 mm at 660℃. Similarly, the increase in pour height increased the fluidity. The liquid metal cleaning process also positively affected the fluidity. As a result of microstructure analysis, the least porosity and undesirable phase formation was observed as a result of casting at 700 ℃ and 100 mm casting height.