National Repository of Grey Literature 198 records found  beginprevious172 - 181nextend  jump to record: Search took 0.02 seconds. 
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.
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.
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.
Welding of bicycle frame from titanium alloy
Richter, Tomáš ; Kandus, Bohumil (referee) ; Kubíček, Jaroslav (advisor)
This bachelor’s thesis is focused to titanium bicycle frame welding. The first part is about bycicle itself. It containes kinds of bikes, materials used for frames and influency of some proportions to handling properties. Next chapter is about titanium. There are properties of titanium and titanium alloys used for bike frames in this chapter. After that there is a chapter about TIG welding, which is mostly used for titanium. This method is mentioned both generally and concretely for titanium. Final part is about technology of bike frame building.
Industrial robot application in area welding technology
Kohút, Josef ; Novotný, Tomáš (referee) ; Knoflíček, Radek (advisor)
The purpose of this bachleor’s thesis is to familiarize the reader with basic recognition of industrial robots and manipulators. Both recognition from aspects of universality and intelligence of control system, and recognition from constructional aspects are described here. Further it put mind on usage of separate types in current industry. Namely then in area of electrical arc and spot welding. Example of robotized technological workplace for technologies of arc welding and his typical composition is also described here.
Welded construction of vertical lathes
Augustin, Petr ; Novotný, Lubomír (referee) ; Marek, Jiří (advisor)
The selected topic of my bachelor thesis deals primarily with the substitution of foundry weldment. TOSHULIN a.s. with a seat in Hulin, production of vertical turning machines. The goa of this thesis is to theoretically and practically assess the pros and cons of the substitution.
Weldet constructions in technical documentacion
Bartošek, Daniel ; Brandejs, Jan (referee) ; Svoboda, Pavel (advisor)
The presented bachelor´s thesis deals with design documentation of welded con-structions. It provides an overview of weldment design types, basic usage principles and formal prerequisits. The thesis should serve for education of weldment design documentation, for which purpose the set of tasks included in the annex was also created.
Progress of welding in shipbuilding
Urban, Václav ; Kubíček, Jaroslav (referee) ; Kovář, Petr (advisor)
This work deals with the methods of welding in shipbuilding, summarises the basic techniques used for welding of the SAW, MAG, MIG, TIG, laser, Laser-Hybrid. It describes the properties of welded material. Especially the materials HY80 and HY100. It follows from the filler materials. In particular materials Spoolarc 95 and 120. Particular emphasis is placed on the method of Laser-Hybrid, its properties and use in shipbuilding. Finally, describes the method of welding aluminium using FSW, preparation of welded surfaces and producting of sandwich panels.
Filler materials for the fusion welding
Durajová, Věra ; Kovář, Petr (referee) ; Daněk, Ladislav (advisor)
The bachelor´s thesis elaborated in frame of bachelors studies branch B2341 deals the problematic filler material for fusion welding. On the basis belles - lettres problems technology welding and their filler material was shown it several kinds filler material for individual welding technology (MIG/MAG, hand arc welding, TIG, submerged-melt welding). First is mentioned problems rise fusing watering - place and on what principle individual technology work. After it are mentioned filler material (producer ESAB Vamberk) electrode, tubule, soft - centred tubule.
Modern welding processes for pressure vessels
Sýkora, Jan ; Janík, Martin (referee) ; Kubíček, Jaroslav (advisor)
This paper deals with modern methods of welding pressure tanks. The aim of this bachelor paper is to describe individual methods assigned to welding pressure tanks. Foremost, different methods of welding are listed followed by procedure description of pressure tank production and lastly specification of welding procedure for individual welds is described.

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