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Welding of pressure vessels
Máca, Martin ; Dohnal, Ivo (referee) ; Daněk, Ladislav (advisor)
The work is focused on the technology of welding pressure vessels. The chosen pressure vessel was one for beer fermentation (also known as CK tank). In addition there are methods of weld inspection and legislative rules for pressure vessels, also mentioned in this work.
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Non-destructive methods of control of welded joints
Černický, Martin ; Šlais, Miroslav (referee) ; Dohnal, Ivo (advisor)
The thesis elaborated in frame of bachelor studies branch mechanical engineering. The thesis is submitting research of present methods of non-destructive control of welded joints. Pursuant to of the literary pursuit the present methods of control of welded joints were written. First it mentioned problematics of defect of welded joints. After it is mentioned a summary of principles and application of methods of non-destructive control of welded joints.
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Welding of pressure vessels
Klika, Stanislav ; Kubíček, Jaroslav (referee) ; Daněk, Ladislav (advisor)
This project elaborated as a part of bachalor's study of programme on Institute of Manufacturing Technology provides suggestion of manufacturing technology for welding of pressure vessel by methods 111 and 135 and comparison between these methods. Based on literary study of welding issues, the substitution of method 111 by method 135 was suggested keeping the weld quality. Weld quality was documented by testing of the welds. Economic advantage of implementation of method 135 was proved by the costs calculation and comparison.
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Škoda Roomster welding procedure
Podstavek, Michal ; Daněk, Ladislav (referee) ; Kubíček, Jaroslav (advisor)
Bachelor thesis elaborated in full-time bachelor's degree in B-STI. Mechanical Engineering describes the welding process of Skoda Roomster. The thesis describes the production process of welding a chassis and joining methods used on Skoda Roomster. Single methods of connecting includes the types of tests used by VW standards used in Skoda Auto. On the chosen joint is designed the WPS weld.
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Structual welding of aluminium alloy
Blahák, Petr ; Hála, Michal (referee) ; Kubíček, Jaroslav (advisor)
The project elaborated in frame of engineering studies branch 2303R002 presents a project that contains welding a structure made of aluminium alloy. There were two usable methods selected, based on literal study of welding aluminium alloys, TIG welding and friction welding, and these were compared with alternative methods of joining, hard soldering and bonding. A work procedure was made for TIG method, soldering and bonding and four experimental joins were made thereafter. Project compares these methods mainly in economical way, also in way of technological difficulties and in way of observance the strength of base materials. Project also deals with problems with lowering strength of base material in heat affected area, burn out of thin material, tendency of aluminium to fill with hydrogen, quick oxidation and consequent hard surface layer emerging on the aluminium.
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Technology of laser machining
Kroupa, Jiří ; Zemčík, Oskar (referee) ; Zemčík, Oskar (advisor)
This bachelor thesis is focused on present possibilities of laser cutting. The first part describes basic principles of the laser beam, possibilities of ma-chining of various materials and its use in production. Various types of lasers are introduced, including those developed in the last decade. The performance and quality edge that the laser beam can give you is presented in the next part. The practical part compares laser machining with conventional technology of machining. Final results are evaluated in the last chapter.
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Materials for Passenger Car Bodies
Vondrák, Zdeněk ; Blaťák, Ondřej (referee) ; Hejtmánek, Petr (advisor)
This work is devoted to description of modern personal car body construction, materials of car bodies, surface finishing and methods of body parts joining. The work presents a list of materials that are used during manufacture of individual parts of body. Further, the work is concerned with surface finishing methods, especially those focused on anti-corrosion protection. The final part deals with various options of joining, that we may encounter in the automobile industry.
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Analysis of friction welding by SFW process
Šajkovics, Patrik ; Mrňa, Libor (referee) ; Kubíček, Jaroslav (advisor)
Bachelor thesis developed in the bachelor study focuses on the analysis of friction welding by SFW process. The work is focused on a detailed description of the principle of technology SFW and its other modification. It describes the microstructure of the welds and it depends on the mechanical properties. Were summarized advantages and disadvantages, industries which the SFW used, suitable materials for welding and material of welding tools. SFW technology is focused on non-ferrous metals and their alloys, but the conclusion is also mentioned steel welding technology SFW and material of tools are suitable.
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Storage life of new torch tip
Jiskra, Milan ; Bakeš, Martin (referee) ; Kubíček, Jaroslav (advisor)
Welding in a MIG/MAG protection atmosphere is the the most used and most widespread method for welding. This method is very extensively used. Its only limitation is in an outdoor environment while working in the field, when the effects of external influences (wind) can breach the gas containment. The containment prevents the access of air to the weld pool and a breach can lead to the formation of a poor quality welded joint with a lot of pores. An important part of the welding device is the contact tip, which energizes the welding wire by electric current. There are many types of contact tips from the cheapest to more expensive ones. The requirement is to increase the lifetime of tips to the maximum in order to minimize replacement times. An Australian company making MIGfast tips has tried to increase the lifetime by using a ceramic insulator. This tip producer claimed as much as five times longer lifetime than conventional tips. Tests carried out by us, however, showed a very negative result in comparison with commonly used conventional tips.
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Analysis of application electron beam in industry
Rudyk, Martin ; Mrňa, Libor (referee) ; Kubíček, Jaroslav (advisor)
The bachelor´s thesis analyses individual methods of usage electron beam in an industrial practice, as a welding, machining, deposition, heat treatment material and gravure. As well it compares individual application with anologous method of special fusing welding like a laser welding. It describes his benefits and disadvantages, principles of the beam rise, etc. In the thesis a welding equipment, its function, weld metal connections for various materials, weldability of the different materials are described.
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