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Manufacture of massive castings and their defects
Doležal, Petr ; Martínek, Ludvík (referee) ; Záděra, Antonín (advisor)
Object of this master’s thesis is accomplished analyze the range of foundry of steel ŽĎAS a.s., Zdar nad Sazavou and make the type massive steel castings and analysis of existing technology foundry and metallurgical defect. The beginning of this master’s thesis is dedicated to the manufacturing of steel foundries range ŽĎAS a.s., Zdar nad Sazavou. The following section is devoted to manufacturing technologies for the production of massive steel castings. In the final part of this thesis are described metallurgical and foundry defects of the typical castings of steel foundry and proposals to eliminate these undesirable defects. End thesis includes a summary of the results and trends in the development of research in the production of massive steel casting.
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Optimization of heavy steel castings manufacture
Jankůj, Josef ; Martínek, Ludvík (referee) ; Šenberger, Jaroslav (advisor)
The work deals with the occurrence of cracks and fissures in the massive steel castings produced in the ŽĎAS a.s. foundry which create in castings through the elimination of the extension. The influence on the final deoxidation on the creation of fissures and cracks is researched at the experimental samples. The beginning of the work is about teoretical analysis of these defects. Next it is described the place of the collection of these samples their chemical composition and cracks identification. After that it is evaluated the appearance of various defects in connection with modificatory and deoxidation additive, observation of experimental material with the microscope and the results of mechanical tests. The conclusion of the work belongs to sum up the individual results and proposal of optimal procedure.
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Optimization of heavy steel castings manufacture
Jankůj, Josef ; Martínek, Ludvík (referee) ; Šenberger, Jaroslav (advisor)
The work deals with the occurrence of cracks and fissures in the massive steel castings produced in the ŽĎAS a.s. foundry which create in castings through the elimination of the extension. The influence on the final deoxidation on the creation of fissures and cracks is researched at the experimental samples. The beginning of the work is about teoretical analysis of these defects. Next it is described the place of the collection of these samples their chemical composition and cracks identification. After that it is evaluated the appearance of various defects in connection with modificatory and deoxidation additive, observation of experimental material with the microscope and the results of mechanical tests. The conclusion of the work belongs to sum up the individual results and proposal of optimal procedure.
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Manufacture of massive castings and their defects
Doležal, Petr ; Martínek, Ludvík (referee) ; Záděra, Antonín (advisor)
Object of this master’s thesis is accomplished analyze the range of foundry of steel ŽĎAS a.s., Zdar nad Sazavou and make the type massive steel castings and analysis of existing technology foundry and metallurgical defect. The beginning of this master’s thesis is dedicated to the manufacturing of steel foundries range ŽĎAS a.s., Zdar nad Sazavou. The following section is devoted to manufacturing technologies for the production of massive steel castings. In the final part of this thesis are described metallurgical and foundry defects of the typical castings of steel foundry and proposals to eliminate these undesirable defects. End thesis includes a summary of the results and trends in the development of research in the production of massive steel casting.
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