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34 results on '"Śleboda, Tomasz"'

15. Tool Wear Issues in Hot Forging of Steel

Author

Krawczyk, Janusz, primary, Łukaszek-Sołek, Aneta, additional, Śleboda, Tomasz, additional, Lisiecki, Łukasz, additional, Bembenek, Michał, additional, Cieślik, Jacek, additional, Góral, Tomasz, additional, and Pawlik, Jan, additional

Published
2023
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19. Wear Mechanisms of the Forging Tool Used in Pre-Forming in a Double Forging System of Truck Parts.

Author

Krawczyk, Janusz, Łukaszek-Sołek, Aneta, Lisiecki, Łukasz, Śleboda, Tomasz, and Hawryluk, Marek

Subjects
TRUCK parts, MANUFACTURING processes, INDUSTRIAL costs, HAMMERS, MICROSTRUCTURE
Abstract

Tool life in plastic forming processes is a problem of the utmost importance as it significantly affects the cost of production. Hot forging with hammers and mechanical presses is an example of the technological process in which the load on tools is extremely high and, consequently, the lifetime of tools is short. Considering, additionally, that this applies to large-scale production, from an economic point of view, the key issue will be to extend the tool life, make an accurate prediction of the number of parts that can be forged before the replacement of dies is necessary, and develop a system for quick tool changeover. Initially, however, it is necessary to understand the causes of excessive tool wear, which may lie in phenomena occurring at the level of microstructure. The aim of this article was to outline an example of the coexistence of multiple wear mechanisms in hot forging dies. For the modified chemical composition, the microstructure examinations were performed in selected areas of the tool. The research has revealed the causes of cracks in tools and some irregularities in the preparation of tools for production process. [ABSTRACT FROM AUTHOR]

Published
2023
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27. T-Shape Connector Hydroforming Process Analysis

Author

Paćko, Marek, primary, Krawczyk, Janusz, additional, Bała, Piotr, additional, Paćko, Paweł, additional, Śleboda, Tomasz, additional, Muszka, Krzysztof, additional, Hojny, Marcin, additional, Wojtaszek, Marek, additional, Cios, Grzegorz, additional, Burdzy, Józef, additional, and Wydra, Roman, additional

Published
2016
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32. The Range of the Occurrence of α Phase in near β Titanium Alloys

Author

Krawczyk, Janusz, Frocisz, Łukasz, Dąbrowski, Robert, Rożniata, Edyta, and Śleboda, Tomasz

Abstract

Two near β titanium alloys (Ti-3Al-8V-6Cr-4Mo-4Zr and Ti-10V-2Fe-3Al) were investigated in his research. Both materials contained disperse precipitations of α phase in β phase matrix. In the case of Ti-3Al-8V-6Cr-4Mo-4Zr alloy clear segregation of alloy constituents, resulting from casting process, were observed. This segregation caused different susceptibility to α phase precipitation in dendritic and interdendritic areas in the microstructure of the investigated alloy. The influence of the temperature, strain and processing time on α phase dissolution was determined. Gleeble compression tests were performed on both of the investigated alloys. The research showed different character of the influence of strain rate and processing time on the temperature of α phase dissolution for each alloy. The effect of heat treatment on α phase dissolution during ageing of the investigated alloys was also determined. The possibility of obtaining homogenous microstructure in these alloys by properly designed heat treatment was also discussed.

Published
2016
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