Effect of the glass-crystalline bond microstructure on the cutting ability of grinding wheels with Al2O3 abrasive grains
Abstract
Standard ceramic abrasive tools are manufactured using glass bonds or mineral resources, in which the microstructure of the bonding bridges cannot be controlled. In this study, a new type of glass-crystalline bond was used to combine mixed abrasive grains from microcrystalline and monocrystalline corundum into an abrasive tool. The glass-crystalline bond has a fine crystalline structure (particle size of the crystalline phase: 1-1.5 µm) and perfectly moistens the abrasive grains. This fact and the generated crystalline phase with a high coefficient of brittle fracture resistance enable the production of tools with a higher porosity and self-sharpening ability in comparison to grinding wheels with the use of industrial bond, which results in high performance indices with a longer service life.
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Author Biographies
Daniela Herman is a research and teaching employee at the Department of Technical Physics and Nanotech-nology at the Faculty of Mechanical Engineering of the Koszalin University of Technology. In 1976 she completed her master's degree in Materials Engineering, in 1984 she defended her doctoral dissertation at the Wrocław University of Technology. In 2005 she received her D.Sc. degree at the Koszalin University of Technology. Scientific research conducted by Daniela Herman concerns the design and manufacture of glass-crystalline materials with required properties, mainly used in hard and super-hard porous abrasive composites. He is the author or co-author of 2 monographs, 8 chapters in book publications, 78 publi-cations, 8 patents and has participated in 25 research projects.
Krzysztof Nadolny received his M.Sc. degree in Mechanics and Machine Design and next Ph.D. (with honors) as well as D.Sc. degree in Machinery Construction and Operation from Koszalin University of Technology, in 2001, 2006 and 2013, respectively. Since 2006 he has been a researcher in the Department of Production Engineering at the Koszalin University of Technology and in 2019 he became head of this department. His scientific interests focus on problems concerning machining processes and tools, efficiency, monitoring and diagnostics of machining processes as well as tribology. He has participated in 2 international and 4 national research projects, presenting results of his work at 16 international and 29 national conferences, published more than 220 scientific papers in international and national journals, book chapters, as well as conference proceedings. He is also the author of 6 monographs and 13 national patents.
Elżbieta Socha received her M.Sc. degree and Ph.D. degree in Technology of Chemistry from the Poznań University of Technology in 2000 and 2005 respectively. Since 2005 she has been the Head of Research and Development Depar-tment in Andre Abrasive Articles Sp. z o.o. Sp. k. . Her professional interests are focused on new raw materials, and on new methods of abrasive tool production with resin and vitrified bonds. She cooperates with many groups of researchers from main Polish Universities of Technology. She is a co-author of 6 scientific publications and 3 national patents. She has participated in 5 national research projects in the abrasive area including WRPO 1.2: "Grinding wheels for high-performance grinding using a new generation of glass-crystalline ceramic bonds".
Dawid Ścibiorski received his M. Sc. Eng. degree in Chemistry and Material Engineering in interdisciplinary studies conducted by Adam Mickiewicz University in Poznań, Military University of Technology in Warsaw and Łódź University of Technology in Łódz. He has been working in Andre Abrasive Articles as a R&D Engineer since 2017. He is a Specialist R&D Engineer in the Andre Abrasive Articles company since 2019 committing to improving bonded abrasive wheels based on resinoid and vitrified bonds. He completed post-graduate studies at the Warsaw University of Technology in 2019. Participant in project WRPO 1.2: "Grinding wheels for high-performance grinding using a new generation of glass-crystalline ceramic bonds".
Copyright (c) 2019 Daniela Herman, Krzysztof Nadolny, Elżbieta Socha, Dawid Ścibiorski
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