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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Tvárné vlastnosti zinkových protikorozních povlaků

Strašák, Jan January 2008 (has links)
No description available.
2

Renovace součástí žárovým nástřikem

Kočnar, Jiří January 2009 (has links)
No description available.
3

Vliv technologie žárového zinkován na kvalitu Zn povlaků

Langer, Tomáš January 2012 (has links)
No description available.
4

Optimalizace parametrů nástřiku elektrickým obloukem / Optimalization of arc spraying parameters

Šildberger, Radek January 2008 (has links)
The project elaborated as a part of engineering studies branch M2307: Engineering Technology, Specialization 02: Forming and Welding Technology deals with the optimization of arc spraying parameters for TAFA 9935 facility.The theoretical part presents the principle of arc spraying, the description of the technological process and the types of additional materials. The practical part proposes the diffrent possibilities of TAFA 9935 arc spraying facility and the suitable additional materials. Several samples with diffrent parameters of spraying were created in order to test and analyse the coating quality.
5

Vlastnosti svarových spojů po žárovém zinkování / The properties of welding joint after hot-dip galvanizing

Vítek, Pavel January 2010 (has links)
The project elaborated in frame of Master's studies branch 2303T002 presents a study of welded joints for hot-dip galvanizing. On the basis of literature study it is assumed that zinc influences the properties of welded joints. Samples were made of high strength steels DOMEX and wear-resistant steels HARDOX which were welded using MAG. Subsequently, half of the samples treated with zinc. The evaluation is used tear test and test Vickers hardness. Finally, the project is the comparison of the measured values of galvanized steel and steel without zinc.
6

Povrchová úprava kontejneru CASTOR / surface finish for the container CASTOR

Tomek, Jan January 2013 (has links)
Master’s thesis deals with the problems of the inner surface finish design for the CASTOR container. In the theoretical part are analyzed properties of metallic surfaces with their defects and various options of surface finishes for increased protection. The practical part of the thesis is focused on the design of appropriate technologies for specific requirements of the surface finish for the CASTOR container, creating test samples and their evaluation.
7

Žárové zinkování vysokopevnostních ocelí / Hot dip galvanizing of highstrength steels

Baránek, Tomáš January 2013 (has links)
This master’s thesis deals with the properties of highstrength steels, mainly with their resistance to corrosion. It describes discusses different types of corrosion and the possibility of protecting materials against corrosion. The thesis also evaluates compares the cost of corrosion protection by using coating and hot dip galvanizing. It describes describes the principles of degreasing and pickling, which is used as an adjustment before hot dip galvanizing. It evaluates there are many procedures for hot dip galvanizing, such as wet, dry or spin method, which is used for small parts. This thesis also evaluates the change of mechanical properties of steels: Hardox 500, Weldox 700 and 500 Weldox after hot dip galvanizing.
8

Konstrukce svařovacího přípravku / Design of welding jig

Štancl, Jiří January 2015 (has links)
The main focus of the thesis is the proposal for the construction of welding jig for the extension of the bus. Welding of individual parts of the assembly is on manual workplace. All parts are made of fabricated structural steel ČSN 41 1373 with galvannealed coating. As an appropriate technology for welding of extension with the optimal parameters method MAG was chosen.
9

Žárové zinkování ocelových konstrukcí / Hot dip galvanizing of the steel construction

Pometlo, Stanislav January 2014 (has links)
This master´s thesis deals with hot dip galvanizing of steel constructions and their protection from corrosion. This work describes the origin of corrosion of steel and its corrosion in different areas and presents degreasing and pickling before hot dip galvanization. It describes possibilities of making zinc layer by the wet and draw method of hot dip galvanization. Furthermore, it puts forward reactions between zinc and iron, possible defects of the zinc layer and influence of the hot dip galvanizing on the steel constructions. The experimental part examines the influence of the hydrogen charging on the material and the time of the flux operation on the quality of layer. The work further analyses the changing of mechanical properties of steels Hardox 500 and Weldox 700 as a result of the hydrogen embrittlement during pickling by the hydrochloric acid.
10

Analýza systému řízení kvality ve vybraném podniku / System of quality control in selected company

OCHRANOVÁ, Iveta January 2017 (has links)
The master's degree thesis deals with the analysis of the quality management system in a selected organisation. The theoretical part focuses on history and quality management, quality principles and its concept. It describes the quality management system, its implementation and documentation. General standards and standards for hot-dip galvanising are an essential part for an easier orientation in the issues. The practical part describes a company engaged in hot-dip galvanising, the company's goals and the process of hot-dip galvanising. The next part provides a detailed description of the technological process concerning hot-dip galvanising to illustrate practically the quality management system. In order to follow the production process, one contract was selected and was closely observed during every step of the whole process of hot-dip galvanising. The last part of the chapter includes data analysis of the quality management system as well as a description of the Pareto analysis, which represents the only instrument of quality management in the organisation. The conclusion provides some improvement suggestions which should be applied by the company to enhance the quality management system and at the same time to prevent possible complications.

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