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Production of seamless rings by technology radial-axial rolling
Zapletalová, Martina ; Lidmila, Zdeněk (referee) ; Podaný, Kamil (advisor)
The thesis is focused on the production of a seamless ring manufactured from low-alloyed steel 15 142, which fills the function as a large-dimensional bearing. On the basis of suitable production technologies analysis, the radial axial rolling method was chosen and a specific manufacturing process was proposed. During the manufacturing time, the creation of the forging defects in the transfers forms were occurred, which was totally undesirable. By changing the parameters of the machine, in particular the rolling curve and the temperature, the process was optimized and the production performed completely without defects.
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Upsetting test and its importance for practice
Zapletalová, Martina ; Řiháček, Jan (referee) ; Podaný, Kamil (advisor)
This thesis was aimed at verifying the accuracy of the evaluation of upsetting test. Experiments were carried out on cylindrical samples of steel 16 231.3 with solid lubricant Delta 144. Comparing the output values that were recorded classical way through the liner recorder and amplifier at press CZR 600. The Results have been processed using measuring module and program made by company Dewesoft. Last trio of samples was tested by upsetting test in a universal machine ZD 40, which was connected to the control unit and the data was processed by M-TEST program. From the plotted working curves and curves deformational resistance can be concluded that a liner recorder and amplifier can be effectively innovated by measuring module and by program.
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Contemporary nutritional recommendations and their compliance by nutritional therapists
Zapletalová, Martina ; Hubáček, Jaroslav (advisor) ; Pejšová, Hana (referee)
This work is focused on Czech and world nutritional recommendations and the profession of nutritional therapist. The aim of the work is to analyze the eating habits of nutrition therapists as nutrition experts. The work is divided into chapters, within which a comparative analysis of both nutritional recommendations and all levels of the profession of nutritional therapist is performed. The analysis of identical and different points was performed on the basis of the study of documents and their comparisons. The first part of the thesis deals with the issue of nutritional recommendations, their importance, forms and methods of creation. The following is a list of current recommendations valid in Europe and in the Czech Republic. These recommendations are then compared. Furthermore, attention is paid to the profession of nutritional therapist, its legislative anchoring and competencies. As this profession has several levels, they are compared with each other and the differences are emphasized. Subsequently, the individual activities of a nutritional therapist are explained and practical examples are presented. Last but not least, an analysis of the eating habits of the addressed nutritional therapists is prepared and compared with the current nutritional recommendations valid in the Czech Republic....
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Production of seamless rings by technology radial-axial rolling
Zapletalová, Martina ; Lidmila, Zdeněk (referee) ; Podaný, Kamil (advisor)
The thesis is focused on the production of a seamless ring manufactured from low-alloyed steel 15 142, which fills the function as a large-dimensional bearing. On the basis of suitable production technologies analysis, the radial axial rolling method was chosen and a specific manufacturing process was proposed. During the manufacturing time, the creation of the forging defects in the transfers forms were occurred, which was totally undesirable. By changing the parameters of the machine, in particular the rolling curve and the temperature, the process was optimized and the production performed completely without defects.
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|
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Upsetting test and its importance for practice
Zapletalová, Martina ; Řiháček, Jan (referee) ; Podaný, Kamil (advisor)
This thesis was aimed at verifying the accuracy of the evaluation of upsetting test. Experiments were carried out on cylindrical samples of steel 16 231.3 with solid lubricant Delta 144. Comparing the output values that were recorded classical way through the liner recorder and amplifier at press CZR 600. The Results have been processed using measuring module and program made by company Dewesoft. Last trio of samples was tested by upsetting test in a universal machine ZD 40, which was connected to the control unit and the data was processed by M-TEST program. From the plotted working curves and curves deformational resistance can be concluded that a liner recorder and amplifier can be effectively innovated by measuring module and by program.
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