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Cermets
Salcburger, Martin ; Kalivoda, Milan (referee) ; Humár, Anton (advisor)
This bachelor´s thesis is focused on materials based on cermets which are designed for the machining of components. The first part describes a short classification and charasteristics of cutting materials used in machining. Second part is focused on the history of development of the cermets, their structure, production, chemical and mechanical properties. The current condition of range of the most known producers of cutting materials is described in the last part of this thesis.
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Cermets
Kontšek, Marián ; Plíšek, Jiří (referee) ; Kouřil, Karel (advisor)
The main motive and objective of this work is to summarize and supplement informations related to materials of cutting tools, particularly cermets, their chemical, physical and mechanical properties of the latest knowledge of current trends and offer of these cutting materials. In more detail will be discussed especially reamers of cermets.
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Cermets and theirs effective use
Hanousek, Petr ; Prokop, Jaroslav (referee) ; Humár, Anton (advisor)
This thesis deals with cermets as a tool material. In the Preamble, the types, production, labeling and properties of cermets are analyzed. The main part of the thesis introduces cermets in the range of manufacturing by the world leading producers of tools and tool materials. The Conclusion of the thesis summarizes the evaluation of tool cutting abilities and recommended working conditions guaranteeing the efficient use of cermets.
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Cermets and theirs effective use
Vaněček, Stanislav ; Sedlák, Josef (referee) ; Humár, Anton (advisor)
The Thesis described within the scope of the Master Program is focused on cermets, which belong among cutting materials. The introductory portion of the Thesis presents the characteristics of cermets from the perspective of production, physical-mechanical characteristics, marking and usage in cutting. The core portion of the Thesis focuses on the role of cermets in the category of leading world producers of tools and instrumental materials, cutting evaluation, and the suggested working conditions of cermets in lathing operations. The working conditions are prepared for steel and cast iron. The conclusion of the Thesis focuses on a technical-economical analysis of cermets.
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Cermets
Hanousek, Petr ; Dvořák, Jaromír (referee) ; Humár, Anton (advisor)
This bachelor thesis deals with cermets, as tool material. In the first part of this work is given a basic overview of tool materials. The second part is focused on species, production and properties of cermets. The third part is given comparison cermets in the range of Seco Tools, Sandvik Coromant and Kennametal.
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Technological, economical and ecological aspects of mist lubrication
Tlapák, Michal ; Sedlák, Josef (referee) ; Píška, Miroslav (advisor)
The assessment of MQL technology application in reaming process was elaborated in this diploma work. The evaluation of energy intensity was carried out in terms of specific cutting force during reaming of austenitic stainless steel work piece by using HSS reamers. The comparison of economic costs in the case of the application of MQL technology in production was made. Confrontation of oil mist removal principles. At the conclusion the evaluation of ecological benefits for the environment and the positive influence on the working environment cleanness was defined.
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The role of thermal spray parameters on structure and properties of cermet coatings
Vražina, Tomáš ; Čelko,, Ladislav (referee) ; Šulák, Ivo (advisor)
The diploma thesis investigates the influence of thermal spray process parameters on the properties of composite coatings, specifically WC-CrC-Ni and WC-Co-Cr coatings deposed onto an austenitic steel substrate. The main objectives were characterization of sprayed deposition and creation of process maps. The theoretical part included the most important details about the manufacturing process, properties, consolidation and application of cermet materials. The methodical part is devoted to a description of analytical methods and devices used for the characterization of coatings microstructure and its mechanical properties. The practical part provides information acquired from analytical devices. It contains details about surface roughness, hardness, porosity, indentation modulus, corrosion potential and corrosion current density. The chemical composition of coatings and powder mixtures was analyzed by energy dispersive spectroscopy (EDS). For more accurate determination of developed phases X-ray diffraction was used. During the coatings characterization various procedures were developed. It is expected that these procedures would be implemented in another optimization of spraying conditions. Results obtained in the practical part were discussed in discussion and compared with the results from several research studies. Conclusions summarize results obtained in practical part.
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Cermets
Medůsek, Milan ; Dvořáček, Jan (referee) ; Humár, Anton (advisor)
This bachelor´s thesis is focused on cermets, which are ranked among tool materials. At the beginning is an overview, distribution and description of the basic materials for cutting tools. The main part follow, which deals with cermets themselves in more detail, from the description of their history through to the production and marking up of the effects of individual elements of the structure and properties of the cermets. In the conclusion of this work is an example of cermets in the manufacturing range of the world´s leading producer of tools and tool materials.
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The role of thermal spray parameters on structure and properties of cermet coatings
Vražina, Tomáš ; Čelko,, Ladislav (referee) ; Šulák, Ivo (advisor)
The diploma thesis investigates the influence of thermal spray process parameters on the properties of composite coatings, specifically WC-CrC-Ni and WC-Co-Cr coatings deposed onto an austenitic steel substrate. The main objectives were characterization of sprayed deposition and creation of process maps. The theoretical part included the most important details about the manufacturing process, properties, consolidation and application of cermet materials. The methodical part is devoted to a description of analytical methods and devices used for the characterization of coatings microstructure and its mechanical properties. The practical part provides information acquired from analytical devices. It contains details about surface roughness, hardness, porosity, indentation modulus, corrosion potential and corrosion current density. The chemical composition of coatings and powder mixtures was analyzed by energy dispersive spectroscopy (EDS). For more accurate determination of developed phases X-ray diffraction was used. During the coatings characterization various procedures were developed. It is expected that these procedures would be implemented in another optimization of spraying conditions. Results obtained in the practical part were discussed in discussion and compared with the results from several research studies. Conclusions summarize results obtained in practical part.
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Cermets and theirs effective use
Hanousek, Petr ; Prokop, Jaroslav (referee) ; Humár, Anton (advisor)
This thesis deals with cermets as a tool material. In the Preamble, the types, production, labeling and properties of cermets are analyzed. The main part of the thesis introduces cermets in the range of manufacturing by the world leading producers of tools and tool materials. The Conclusion of the thesis summarizes the evaluation of tool cutting abilities and recommended working conditions guaranteeing the efficient use of cermets.
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