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Optimization of the laser weld of overlap seam for zink layered sheet metal
Plíšek, Roman ; Kubíček, Jaroslav (referee) ; Mrňa, Libor (advisor)
This diploma thesis deals with the experiment of welding galvanized sheets using fiber laser. The experiment is based on testing of welds lap joints with different gap between the welded parts. Theoretical part of this diploma thesis describes the principles and different types of lasers, laser welding technology, welding defects, galvanizing and inspection of welded joints. In the experimental part of the thesis welding tests and analysis of the results of the experiment have been realised and evaluated.
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Analysis of the surface after laser cutting
Narovec, David ; Sedlák, Josef (referee) ; Osička, Karel (advisor)
This diploma thesis discusses laser cutting and the consecutive surface treatment of cut parts. The theory of laser cutting is described in the first part of this thesis, including laser history and the laser emergence principle. Cut parameters and the influence of the laser cutting on the material are described later on. The next part describes the laser cutting technological possibilities and other laser technology utilization options are outlined. In the last theory part, metal surface treatment used in the experiment is covered. Coating thickness is evaluated in the practical part of this thesis, as well as roughness, microhardness, chemical microanalysis and metalography. The evaluation of the results achieved, and optimal surface treatment execution suggestions are addressed in the last part of this thesis.
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Design of flat pallet for automatic parking garage
Osmík, Jiří ; Mrňa, Libor (referee) ; Kubíček, Jaroslav (advisor)
Design of flat pallet for automatic parking garage. Parking and description of automatic parking systems. Welding and weldability of materials. Electric arc welding and welding by melting electrode in protective gas by MIG/MAG method, welding instruments. Design of parking palette calculation and calculation this palette by MKP method. Process of drawing documentation for parking palette. Design of welding process and WPS. Description of annealing and zinc coating. Economic-technical analysis of palette for automatic parking system production.
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Heat and mechanical resistance of zinc coating
Horák, Karel ; Dzimko, Marián (referee) ; Černý, Michal (advisor)
The work is aimed at studying the thermal degradation of the protective zinc coating. Its large part deals with the structure of the various stages of transition and their arrangement, the main emphasis is on analysis of brittle intermetallic phases, which arise due to increased temperature. Conclusion of the work is trying to clear itself causes degradation of this protective layer.
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Metody ochrany karoserií vozidel proti korozi
Hána, Daniel
This thesis deals with corrosion and corrosion resistance of steel parts of motor vehicles. First part describes in depth general issues of degradation corrosion systems, with emphasis on clear classification of corrosion types and anti-corrosion treatments. The next part defines particular anti-corrosion treatments. This part is followed by a concrete description of coachwork anti-corrosion treatment. Here the attention is paid to those anti-corrosion treatments that are currently most used by leading motor vehicles manufacturers.
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Analysis of the surface after laser cutting
Narovec, David ; Sedlák, Josef (referee) ; Osička, Karel (advisor)
This diploma thesis discusses laser cutting and the consecutive surface treatment of cut parts. The theory of laser cutting is described in the first part of this thesis, including laser history and the laser emergence principle. Cut parameters and the influence of the laser cutting on the material are described later on. The next part describes the laser cutting technological possibilities and other laser technology utilization options are outlined. In the last theory part, metal surface treatment used in the experiment is covered. Coating thickness is evaluated in the practical part of this thesis, as well as roughness, microhardness, chemical microanalysis and metalography. The evaluation of the results achieved, and optimal surface treatment execution suggestions are addressed in the last part of this thesis.
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Optimization of the laser weld of overlap seam for zink layered sheet metal
Plíšek, Roman ; Kubíček, Jaroslav (referee) ; Mrňa, Libor (advisor)
This diploma thesis deals with the experiment of welding galvanized sheets using fiber laser. The experiment is based on testing of welds lap joints with different gap between the welded parts. Theoretical part of this diploma thesis describes the principles and different types of lasers, laser welding technology, welding defects, galvanizing and inspection of welded joints. In the experimental part of the thesis welding tests and analysis of the results of the experiment have been realised and evaluated.
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|
|
Design of flat pallet for automatic parking garage
Osmík, Jiří ; Mrňa, Libor (referee) ; Kubíček, Jaroslav (advisor)
Design of flat pallet for automatic parking garage. Parking and description of automatic parking systems. Welding and weldability of materials. Electric arc welding and welding by melting electrode in protective gas by MIG/MAG method, welding instruments. Design of parking palette calculation and calculation this palette by MKP method. Process of drawing documentation for parking palette. Design of welding process and WPS. Description of annealing and zinc coating. Economic-technical analysis of palette for automatic parking system production.
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|
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Heat and mechanical resistance of zinc coating
Horák, Karel ; Dzimko, Marián (referee) ; Černý, Michal (advisor)
The work is aimed at studying the thermal degradation of the protective zinc coating. Its large part deals with the structure of the various stages of transition and their arrangement, the main emphasis is on analysis of brittle intermetallic phases, which arise due to increased temperature. Conclusion of the work is trying to clear itself causes degradation of this protective layer.
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