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Environmental Impact Assessment of Manufacturing Abrasion Resistant Coatings with Magnetron Sputtering
Krobauer, Jakub ; Holub, Martin (referee) ; Kocmanová, Alena (advisor)
This thesis is focused on the environmental impact assesment of the manufacturing process of cutting tool coatings. Described are current environmental problems and duties of companies affecting the environment. There is a description of methods used in environmental management, one of which is the LCA method. This method is then used to compare environmental impacts of TiN and AlTiN coatings. The thesis describes manufacturing process of these coatings and evaluates environmental impacts for both coatings. These results are then compared and conclusions and recommendations are made.
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New Milling HSS Cutters for Roughing Operations
Jaroš, Aleš ; Janáč, Alexander (referee) ; Chladil, Josef (referee) ; Píška, Miroslav (advisor)
Dissertation thesis is focused on development, design and production of the new milling cutter which is used for roughing operations. High-speed steels, coating technology and milling technology are described in first chapters of dissertation thesis. The main part of this thesis is the design of the new milling cutter that has been designed on the basis of the machining simulation. The milling cutter is designed as a three-flute cylindrical end mill made of high speed steel. The each flute is composed of two special compensation edges. The compensation edges are used for reducing (at best suppression) tensile stress in the heel of the tooth. The milling cutter was made by lost wax technology, followed by grinding and thermal treatment. New designed tools were deposited by PVD coatings (e.g. (Al,Ti)N). Standard catalog milling cutters (producer ZPS - milling tools, Zlín, Czech Republic) were used for comparison the designed milling cutter. Carbon steel CSN 41 2050 (DIN 1.1191) was used for milling, which was carried out with using process liquid. The monitored parameters were force loading, flank wear and tensile stress during milling. The dynamometer Kistler was used for measuring force loading and data obtained during machining was used for stress analysis.
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Environmental Impact Assessment of Manufacturing Abrasion Resistant Coatings with Magnetron Sputtering
Krobauer, Jakub ; Holub, Martin (referee) ; Kocmanová, Alena (advisor)
This thesis is focused on the environmental impact assesment of the manufacturing process of cutting tool coatings. Described are current environmental problems and duties of companies affecting the environment. There is a description of methods used in environmental management, one of which is the LCA method. This method is then used to compare environmental impacts of TiN and AlTiN coatings. The thesis describes manufacturing process of these coatings and evaluates environmental impacts for both coatings. These results are then compared and conclusions and recommendations are made.
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New Milling HSS Cutters for Roughing Operations
Jaroš, Aleš ; Janáč, Alexander (referee) ; Chladil, Josef (referee) ; Píška, Miroslav (advisor)
Dissertation thesis is focused on development, design and production of the new milling cutter which is used for roughing operations. High-speed steels, coating technology and milling technology are described in first chapters of dissertation thesis. The main part of this thesis is the design of the new milling cutter that has been designed on the basis of the machining simulation. The milling cutter is designed as a three-flute cylindrical end mill made of high speed steel. The each flute is composed of two special compensation edges. The compensation edges are used for reducing (at best suppression) tensile stress in the heel of the tooth. The milling cutter was made by lost wax technology, followed by grinding and thermal treatment. New designed tools were deposited by PVD coatings (e.g. (Al,Ti)N). Standard catalog milling cutters (producer ZPS - milling tools, Zlín, Czech Republic) were used for comparison the designed milling cutter. Carbon steel CSN 41 2050 (DIN 1.1191) was used for milling, which was carried out with using process liquid. The monitored parameters were force loading, flank wear and tensile stress during milling. The dynamometer Kistler was used for measuring force loading and data obtained during machining was used for stress analysis.
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