Žilinská univerzita v Žiline
Permanent URI for this communityhttps://drepo.uniza.sk/handle/hdluniza/1
Browse
9 results
Search Results
Item Interakcia medzi materiálom, tepelným spracovaním a pevnostným výpočtom v návrhu ozubených prevodov(University of Žilina, 2025) Maláková, Silvia; Kepeň Harachová, DanielaThis paper investigates the complex interaction between material selection, heat treatment processes, and strength calculation methodologies in the design of gear transmissions. The mechanical performance and durability of gears are highly dependent on the choice of base material and the subsequent thermal treatments applied to optimize their microstructure and mechanical properties. We analysed how different heat treatment techniques, such as carburizing, quenching, and tempering, influence the microstructural characteristics and fatigue strength of common gear materials. Furthermore, the study evaluates how these material and heat treatment factors are integrated into strength calculation models used in gear design to predict operational lifespan and reliability. Experimental data and numerical simulations are employed to validate the correlation between processing parameters and gear performance. The findings highlight the critical role of a holistic design approach that considers material properties, heat treatment parameters, and accurate strength calculations to enhance gear transmission efficiency and longevity.Item How heat treatment affects tool steels(University of Žilina, 2025) Kantoríková, ElenaThe properties of steels cannot be determined solely by their chemical composition. Their final characteristics depend to a large extent on the applied processing methods - whether thermal, chemical, a combination of chemical and thermal, or thermomechanical treatment. When these processes are carried out properly, steels gain the required qualities and their durability is extended. This paper presents an overview of heat treatment techniques for tool steels. Understanding these principles is essential for the effective application of heat treatment and for minimizing the extent of subsequent finishing operations.Item Vplyv precipitačného vytvrdzovania na mechanické vlastnosti nehrdzavejúcich ocelí(University of Žilina, 2025) Kantoríková, ElenaThe article aims to highlight the impact of heat treatment - precipitation hardening on stainless steels. Precipitation hardening allows to achieve very high mechanical properties (tensile strength and yield strength), often significantly higher than in classical austenitic or ferritic steels. The aim is to compare the theoretical conditions of heat treatment and thus increase awareness of its advantages.Item Ochrana kovových materiálov pred chemickým vplyvom prostredia pri ohreve(University of Žilina, 2025) Kantoríková, ElenaProtecting metal components from chemical influences during heat treatment is important due to corrosion, where metals can react at high temperatures and subsequently weaken the component. Due to oxidation, metals can oxidize, meaning they react with oxygen in the air. This process can create oxide layers that can be brittle and peel off, exposing fresh metal that can further oxidize. Chemical reactions can change the structure of the metal, leading to its weakening and increased susceptibility to mechanical damage.Item Vplyv teploty formy na vybrané vlastnosti AlSi5Cu2Mg(University of Žilina, 2024) Kantoríková, ElenaCurrently, high demands are placed on the costs associated with the production of products, therefore it is advisable to know the individual characteristics of materials that are used in industry. The article deals with the influence of mold temperature on the mechanical properties of aluminium alloy. By knowing the characteristics of individual materials, it is possible to effectively design and manufacture equipment that will be safe and suitable for the given application. In many cases, aluminium alloys are offered as a solution, which are considered innovative construction materials, mainly because of the perfect combination of their properties.Item Tepelné spracovanie nástrojových ocelí(University of Žilina, 2024) Fabian, PeterThe article describes the importance of heat treatment of tool steels, referred to as class 19. To obtain the required properties of steels, their chemical composition alone is not enough. An irreplaceable role is also played by subsequent processing, be it thermal, chemical, or a combination chemical-thermal or thermo-mechanical processing. With the right settings processing, the desired properties are achieved, and the service life of the steel is also increased.Item Vplyv technológie tepelného spracovania na tribologické vlastnosti vybraných oceľových materiálov(University of Žilina, 2024) Harvanec, Jakub; Mičian, Miloš; Nový, FrantišekThe heat treatment technology changes all sorts of materials properties. We examined the change of tribological properties of selected powder metallurgy materials and conventional steels, in this article. We used special testing equipment, for measuring the changes of friction coefficient of individual tested materials, before application of the heat treatment and after application of the heat treatment. We tested two types of powder metallurgy steels and two types of conventional steels. The changes in friction coefficient are shown in the table and charts. We used boronising, nitriding and surface hardening as procedures of heat treatment.Item Vyvolanie scitlivenia na koróziivzdornej oceli 1.4845(University of Žilina, 2023) Kaličiak, Samuel; Kantoríková, Elena; Bolibruchová, DanaThe experiment is focused on the influence of heat treatment, solution annealing and subsequent sensitization of stainless steel 1.4845. In the experiment, a suitable thermal cycle of solution annealing and subsequent sensitization is designed. Subsequent comparisons of the microstructure and hardness of steel 1.4845 before and after the proposed heat treatmentItem Dodatočné spracovanie spekaných materiálov(University of Žilina, 2023) Kantoríková, ElenaPowder metallurgy is a method of producing materials and products with required properties and required exact shapes. The development of new materials contributes to this. The general advantage of powder metallurgy is the possibility of producing parts of complex and precise shapes in large series and optimized production costs, resulting from lower energy requirements compared to casting and chip machining.