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National Repository of Grey Literature 1 records found  Search took 0.00 seconds. 
The Influence of Remaining Water and other Significant Factors on Cooling Intensity during Heat Treatment of Steel
 Resl, Ondřej ; Macháčková,, Adéla (referee) ; Hajduk, Daniel (referee) ; Pohanka, Michal (advisor)
Hundreds of milions tons of crude steel are produced worldwide every year. The crude steel is further processed mainly by hot rolling. It is necesary to control cooling process during heat treatment to achieve the required mechanical and physical properties of final products. Cooling is influenced by many parameters and that is the reason why optimal cooling intensity setting is very complicated. Knowledge of the influence of individual factors is crucial for proper cooling. This work deals with the study of the influence of surface quality (surface roughness, presence of oxides) on cooling intensity and the issue of remaining water. The term remaining water means thin water layer that remains on the cooled surface after cooling. As part of the work the influence of surface roughness and oxide presence on cooling of the moving steel surfaces is experimentally investigated using different types of water cooling. To assess the impact of these parameters, cooling is investigated on three different types of surfaces (rolled, grinded, oxidized) and the results are analysed. The influence of the remaining water on cooling is also experimentally investigated. Again, the different types of water cooling and surfaces are used.
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