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National Repository of Grey Literature 13 records found  previous11 - 13  jump to record: Search took 0.00 seconds. 
Optimalization of electric arc furnace operation
 Mikulinec, René ; Raček, Jiří (referee) ; Lázničková, Ilona (advisor)
The bachelor thesis deals with issues of electric arc furnaces and therefore the introductory part focuses on electric arc and its distribution according to the type of power. There is also stated the distribution of arc furnaces and heavy-current arc furnace circuit. Another part of the bachelor thesis is devoted to interferences, which operate the power network and the possibilities of reducing these interferences. The aim of this bachelor thesis is to optimize the operation of electric arc furnaces and that is the reason for the stating of the calculation of optimal parameters arc furnace with a circular diagram.
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Device for filling tap hole of arc furnace
 Juda, Lukáš ; Brhel, Jaroslav (referee) ; Malášek, Jiří (advisor)
Diploma thesis describes design and function verification of device for filling tap hole of electric arc furnace with tap hole diameter from 190 mm to 250 mm. The theses includes drive design calculation of chute swinging movement and bearing calculations. Another part of the thesis deals with verification of device functions which it is completed with process description of creating DEM simulation in program YADE. The thesis also includes basic experiments for determination angle of internal friction, angle of repose, coefficient of restitution and angle of material friction on a steel surface. Drawing documentation of selected assemblies is part of the thesis.
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History of ferrous alloys manufacture in the Foundry of ŽĎAS, a. s.
 Nejedlý, Tomáš ; Pernica, Vítězslav (referee) ; Šenberger, Jaroslav (advisor)
The thesis describes the history of modern age of steel production in Ţďár region, and the history of metallurgical engineering company ŢĎAS. The work is divided into the theoretical part of the steel production on electric arc furnaces along with brief history from steel production in bloomery furnace to the modern steel manufacturing technology - secondary metallurgy. The second part describes the history of steel production in Ţďár region until the formation of metallurgical engineering company ŢĎAS, and consequently the company development from the construction to the present day. The thesis are focused on the development of secondary metallurgy by which the ŢĎAS company can reach the steel with high level of micro cleanness and high level of mechanical properties. Using by this technology the company can extend its product range by introducing new steel grades. Thanks to the continuous progress and efforts to achieve the best results in steel quality, the ŢĎAS company be among the largest producer of quality steel not only in the Czech Republic.
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National Repository of Grey Literature : 13 records found   previous11 - 13  jump to record:
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