Technológ - Ročník 17.; Číslo 2/2025
Permanent URI for this collectionhttps://drepo.uniza.sk/handle/hdluniza/1243
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Item Giga casting ako technologická revolúcia vo výrobe automobilov(University of Žilina, 2025) Bolibruchová, DanaGiga casting is referred to as a technological revolution in automobile manufacturing. Large aluminium castings are increasingly used for the production of automotive vehicles, especially for electric vehicles with low weight and to reduce production costs. Since most of them are structural components loaded quasi-statically, dynamically and cyclically, the quality and quantifiable performance of extremely large aluminium castings is crucial for their production. This article briefly analyses the current state of the art in the field of giga castings, some examples of their use in the automotive industry, their benefits and advantages.Item Kvantitatívne hodnotenie náchylnosti Al-Si-Cu-Mg zliatiny s prídavkom titánu na vznik trhlín za tepla(University of Žilina, 2025) Sýkorová, MartinaThis study presents a quantitative evaluation of the effect of titanium (Ti) additions on the hot-tearing susceptibility of the AlSi5Cu2Mg aluminium alloy. The AlSi5Cu2Mg aluminium alloy is used in the production of highly stressed cylinder head castings and is characterized by an increased susceptibility to hot tears. The main objective of the study was to determine the extent to which grain refinement of the aluminium alloy with an excessive amount of Ti affects its susceptibility to hot tears. Thermal analysis was performed to characterize the solidification behaviour of the experimental alloys. Grain refinement was evaluated metallographically by measuring the Dendrite Arm Spacing (DAS) index. The results confirmed that the addition of titanium led to a decrease in the hot tearing susceptibility of the AlSi5Cu2Mg alloy.