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Your search keyword '"Małek, Marcin"' showing total 171 results
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171 results on '"Małek, Marcin"'

1. Primary Research on Dry Milling of AISI 316L Stainless Steel Using Coated Monolithic Carbide Tools

Author

Grabowski, Marcin, Franczyk, Emilia, Małek, Marcin, Skoczypiec, Sebastian, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Ivanov, Vitalii, Series Editor, Haddar, Mohamed, Series Editor, Cavas-Martínez, Francisco, Editorial Board Member, di Mare, Francesca, Editorial Board Member, Kwon, Young W., Editorial Board Member, Tolio, Tullio A. M., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Schmitt, Robert, Editorial Board Member, Xu, Jinyang, Editorial Board Member, Gapiński, Bartosz, editor, Ciszak, Olaf, editor, and Machado, Jose Mendes, editor

Published
2024
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11. Selected aspects of the design of special monolithic carbide milling cutters for austenitic steels

Author

Małek Marcin, Grabowski Marcin, and Skoczypiec Sebastian

Subjects
austenitic stainless steel, milling, tungsten carbide tools, speciall shape cutting tools, end mill stabillyty/durability, Technology (General), T1-995, Engineering (General). Civil engineering (General), TA1-2040
Abstract

In many machining applications, the appropriate selection of cutting tools in relation to the type of material being machined, the machining parameters and the required shape and dimensional accuracy is of particular importance. This especially applies to operations requiring the use of specific tools, i.e. tools that are not included in the standard offer but are tailor-made according to the individual needs of the customer. The article focuses on the machining problems of selected austenitic grades of stainless steel and the selection of technologies (i.e. machining parameters and strategies and tool geometry) concerning the design and use of special monolithic carbide milling cutters. The possibilities of manufacturing elements from austenitic steels with high shape and dimensional accuracy and high surface layer quality are limited. Due to their high ductility, the tendency to create growths on the cutting edge and the high compression strength coefficient, these materials pose a serious technological challenge. The analysis of phenomena presented in the article forms the basis for developing guidelines for designing the machining process using special monolithic carbide cutters dedicated for specific applications.

Published
2023
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26. Analysis of the Life Cycle and Properties of Concrete with the Addition of Waste Car Glass.

Author

Starczyk-Kołbyk, Anna and Małek, Marcin

Abstract

Sustainable construction aims to reduce the negative environmental impact of buildings throughout their life cycle, which includes design, construction, use, demolition and recycling. Taking into account the successive stages of the concrete life cycle and the elements of sustainable construction, the need to carry out research and analysis of the properties of concrete with additives was noticed in aspects of the concrete life cycle, e.g., the production stage, its durability during operation and the possibility of re-use after demolition. It was also noticed that the use of additives in the form of waste materials brings many benefits, including improvement of some parameters of concrete while saving natural resources. The article presents a detailed analysis of all four phases of the assessment of the life cycle of concrete modified with the addition of waste car glass: goal and scope definition, inventory analysis, impact assessment and interpretation. The progressive increase in the amount of glass waste produced each year around the world made it necessary to start the search for new recycling methods. During the research, concrete mixes were prepared according to a new, laboratory-calculated recipe containing glass fibers, natural aggregate (sand with a fraction of 0–2), crushed aggregate (basalt with a fraction of 2–8) and Portland cement (52.5 MPa). Concrete has been designed in four variants, which differ based on n the amount of tempered glass added. The first variant W1 was modified with 66.67 kg/m3, the second variant W2 contained the addition of 111.11 kg/m3 and the third variant W3—155.56 kg/m3. After 28 days, volumetric densities, values of the modulus of elasticity and thermal properties were determined; strength tests were also carried out during which the compressive strength (Reference = 70.30 MPa; W1 = 68.18 MPa; W2 = 70.13 MPa; W3 = 68.60 MPa), tensile strength in bending (Reference = 5.70 MPa; W1 = 5.63 MPa; W2 = 5.70 MPa; W3 = 5.27 MPa) and tensile strength in splitting were determined. On the remains of the samples from the strength tests, microstructure tests were performed. The conclusions and considerations on the further direction of the research were included in the discussion. The novelty of our research is related to the elimination of the glass waste processing process, which was described in detail in the Introduction. [ABSTRACT FROM AUTHOR]

Published
2023
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27. Research on microstructure and mechanical properties of explosively welded stainless steel/commercially pure Ti plate

Author

Małek Marcin, Wachowski Marcin, and Kosturek Robert

Subjects
cladding, explosive welding, joining, microstructure, Engineering (General). Civil engineering (General), TA1-2040, Technology (General), T1-995, Manufactures, TS1-2301
Abstract

Surface protection by the application of explosive welding is one of the meaningful methods used in many chemical devices like reactor condensers, heat exchangers, steam turbines and other processing apparatus. Due to the wide range of explosively welded applications, the problem of the useful lifetime of the products obtained by this method becomes important and should be well understood. Process of explosive welding is related to enormous pressure and high detonation velocity, which causes intense energy release in a short time, which favors to produce solid wavy bond featured with high metallurgical quality. Due to strain hardening in the bond zone, significant changes in microstructures and mechanical properties were observed. In this paper, 316L stainless steel explosively welded with commercially pure titanium was investigated to show the correlations and changes between microstructures and mechanical properties before and after annealing. Application of post-weld heat treatment contributes to stress relieving and improves the mechanical properties, which is closely related to microstructure recrystallization and hardness decrease adjacent to joint.

Published
2019
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29. A Comparative Study on Laser Powder Bed Fusion of Differently Atomized 316L Stainless Steel

Author

Grzelak, Krzysztof, primary, Bielecki, Marcin, additional, Kluczyński, Janusz, additional, Szachogłuchowicz, Ireneusz, additional, Śnieżek, Lucjan, additional, Torzewski, Janusz, additional, Łuszczek, Jakub, additional, Słoboda, Łukasz, additional, Wachowski, Marcin, additional, Komorek, Zenon, additional, Małek, Marcin, additional, and Zygmuntowicz, Justyna, additional

Published
2022
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33. Compositing Graphene with Carbon Fibres Enables Improved Dynamical Thermo-Mechanical Behavior of Papers Produced at a Large Scale

Author

Kowiorski, Krystian, primary, Chlanda, Adrian, additional, Heljak, Marcin, additional, Djas, Małgorzata, additional, Bucholc, Bartosz, additional, Kaszyca, Kamil, additional, Strojny-Nędza, Agata, additional, Zybała, Rafał, additional, Małek, Marcin, additional, Święszkowski, Wojciech, additional, and Chmielewski, Marcin, additional

Published
2022
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