Výroba odlitků progresivní technologií stlačením při krystalizaci
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Date
2020-06-24
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Abstract
Diplomová práce je zpracovaná na téma: Výroba odlitků progresivní technologií stlačením při krystalizaci. Je rozdělena do tří částí - teoretické, výpočtové a experimentální. Teoretická část je zaměřena na obecné zákonitosti krystalizace kovů. Je zde popsán vliv zvýšeného tlaku na krystalizaci kovů. Dále popisuje slitinu hliníku Al-Si a vliv zvýšeného tlaku na její krystalizaci. Následně je uvedena charakteristika slitiny hliníku Al-SiMg. Výpočtová část se zabývá stanovením počtu atomů pro tvorbu krystalizačního zárodku čistého hliníku a dalších kovů. Výpočtová část je dále zaměřena na výpočet teploty tání čistého hliníku a křemíku v závislosti na tlaku. Experimentální část je primárně zaměřena na sledování mechanických vlastností slitiny AlSi5Mg která byla vyrobena progresivní technologií stlačení taveniny při její krystalizaci. Tato slitina je korozivzdorná a špatně slévárensky zpracovatelná.
The diploma thesis is elaborated on the topic: Production of castings by progressive technology by compression during crystallization. Thesis is divided into three parts - theoretical, computational and experimental. The theoretical part is focused on the general laws of metal crystallization. The effect of elevated pressure on metal crystallization is described here. It also describes the aluminum alloy Al-Si and the effect of elevated pressure on its crystallization. Subsequently, the characteristics of the aluminium alloy Al-Si-Mg are given. The computational part deals with the determination of the number of atoms for the formation of the crystallization nucleus of pure aluminium and other metals. The calculation part is further focused on the calculation of the melting point of pure aluminium and pure silicon as a function of pressure. The experimental part is primarily focused on monitoring the mechanical properties of AlSi5Mg alloy, which was produced by progressive technology of melt compression during its crystallization. This alloy is corrosion-resistant and difficult to cast.
The diploma thesis is elaborated on the topic: Production of castings by progressive technology by compression during crystallization. Thesis is divided into three parts - theoretical, computational and experimental. The theoretical part is focused on the general laws of metal crystallization. The effect of elevated pressure on metal crystallization is described here. It also describes the aluminum alloy Al-Si and the effect of elevated pressure on its crystallization. Subsequently, the characteristics of the aluminium alloy Al-Si-Mg are given. The computational part deals with the determination of the number of atoms for the formation of the crystallization nucleus of pure aluminium and other metals. The calculation part is further focused on the calculation of the melting point of pure aluminium and pure silicon as a function of pressure. The experimental part is primarily focused on monitoring the mechanical properties of AlSi5Mg alloy, which was produced by progressive technology of melt compression during its crystallization. This alloy is corrosion-resistant and difficult to cast.
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krystalizace, nukleace, tlak, slitiny typu Al-Si, slévárenská forma, stlačení taveniny, metalografie, crystallization, nucleation, pressure, Al-Si type alloys, casting mould, melt compression, metallography