Stanovení lineární expanze slitiny hliníku v závislosti na vnějších podmínkách během tuhnutí

Abstract

The diploma thesis deals with the possibilities of influencing the resulting structure of aluminum alloy castings by changing the external conditions of crystallization and solidification. Aluminum alloys are commonly used in the foundry industry to produce castings for the automotive industry. It is in this sector that the emphasis is on quality. Due to the high demands of customers, influencing the resulting microstructure is an important process in the production of castings. The aim of the diploma thesis experiment is to evaluate the effect of different preheating of the metal mold on the resulting structure of test castings and subsequent thermal expansion. The microstructure will be evaluated on a light optical microscope. Structural experiments (DAS, porosity, eutectic content) were obtained in the experiments. Other experiments dealt with the measurement of Brinell hardness and the thermal expansion test.