National Repository of Grey Literature 3 records found  Search took 0.00 seconds. 
The Influence of Structure and Heat Treatment on Properties of Steels for Bearings
Pytlíčková, Kateřina ; Dočkal, Ing, Michael (referee) ; Věchet, Stanislav (advisor)
Heat treatment influences structure and characteristics of treatmented material. Good heat treatment of steels for bearings ensures hardness of matrix 60 - 65 HRC, whereas structure has be formed by tempered fine needle-shaped martensite with definite part of residual austenite. Carbides should be evenly dispersed, they mustn´t create carbide network and carbide lines. Quality of steels for bearings is also influenced by volume and morphology of inclusions in the matrix. In this diploma thesis various conditions of heat treatment were to be set up with the aim of choose the optimal ones. These ensures perfect martensite transformation and full hardening of all component. Quenching from 760 °C – 770 °C was quite unsatisfactory. At this temperature resulting structure was ferritic-perlitic, because martensite transformation did not pass. Too long hold on hardening temperature also had unfavourable influence on resulting structure and characteristics. In this case, structure was created by very coarse needle-shaped martensite. Coarsening of martensite needle locally exceeded maximum allowed level. In the structure there was also possible to watch partly soluted globular carbides. Optimal heat treatment is quenching from 850 °C – 870 °C followed by tempering at 220 °C. Resulting structure quite agree with above-mentioned needs. This heat treatment can be recommended for technical practise.
Construction Project Organization
Pytlíčková, Kateřina ; Matoušek, Hynek (referee) ; Waldhans, Miloš (advisor)
My diploma thesis I have divided on two parts – theoretical and practical. The goal of my work is to show the method how to project in construction and demonstrate it in a particular construction company and illustrate a solution to a specific order. I would like to describe and handle two different contracts, focus on the selection process, form of processing some data, contractual arrangements or necessary resources.
Construction Contract Management in a Construction Company
Pytlíčková, Kateřina ; Hlučil, Jiří (referee) ; Waldhans, Miloš (advisor)
My bachelor thesis I have divided on two parts – theoretical and practical. The goal of my work is to show the method of managing contracts in a particular construction company. I would like to describe two different contracts and compare them to the way the selection process, form of processing some data, contractual arrangements or necessary resources.

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2 Pytlíčková, Kristýna
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