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Production of the material chamber to a blast furnace
Netopil, Lubomír ; Kubíček, Jaroslav (referee) ; Sigmund, Marian (advisor)
The theses deals with the production of furnace-top hopper. Mainly it is focused on the welding of abrasion-resistant materials and steel for pressure vessels using the FCAW method. These materials are described in detail in the research section, including the additional materials used, the welding methods used and NDT tests used to check the quality of the welds. The practical part then describes the technological process of production. Subsequently, the procedure of welding of the abrasion-resistant steels and steel for pressure vessels, including the developed WPS, is elaborated. The procedure of testing by non-destructive tests of selected combinations of materials with documented test reports and a plan of inspections and tests is also described. Finally, a technical and economic evaluation of production was performed.
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Evaluation of defects and disturbances of an existing structures
Uher, Adam ; Láník, Jaromír (referee) ; Schmid, Pavel (advisor)
The bachelor thesis describes the most used methods of diagnostics of building structures, then it focuses on the use in diagnostics of as yet unused modern technologies, potentially replacing several activities in the work of diagnostics and other professions. The advantages of these technologies, specifically 3D scanning, are presented on a case study of the revitalization of an apartment building in Brno, Koliště 33. In the practical part of thesis is described the process of diagnosis of defects and failures of the object, including applied methods and findings. The output of the work is a proposal of measures and a set of recommendations.
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Robotic welding case of linear fluid motor produced from high-strength steel
Hejduk, Stanislav ; Slováček, Marek (referee) ; Sigmund, Marian (advisor)
The theses deals with the welding of high-strength steels S690 QL using the MAG method. The aim of the work was to conduct a feasibility study for welding VP steels. Welding took place in a robotic workplace. Welding parameters were calculated, and subsequently, a pWPS was created based on these parameters, according to which a test sample was welded. The welding was performed without preheating or post-weld heat treatment. The welded samples were then evaluated using non-destructive and destructive testing. No unacceptable surface defects were detected through non-destructive testing. Destructive testing verified the size of the heat-affected zone (HAZ), with the most significant influence observed in the cover layer, and a value of 2.5 mm was determined. The hardness test according to Vickers also yielded successful results, with the highest measured value being 377 HV0.2. The tensile test resulted in failure within the HAZ, but the mechanical properties were comparable to the base material. Therefore, the weld on the test sample was evaluated as successful.
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Production of the material chamber to a blast furnace
Netopil, Lubomír ; Kubíček, Jaroslav (referee) ; Sigmund, Marian (advisor)
The theses deals with the production of furnace-top hopper. Mainly it is focused on the welding of abrasion-resistant materials and steel for pressure vessels using the FCAW method. These materials are described in detail in the research section, including the additional materials used, the welding methods used and NDT tests used to check the quality of the welds. The practical part then describes the technological process of production. Subsequently, the procedure of welding of the abrasion-resistant steels and steel for pressure vessels, including the developed WPS, is elaborated. The procedure of testing by non-destructive tests of selected combinations of materials with documented test reports and a plan of inspections and tests is also described. Finally, a technical and economic evaluation of production was performed.
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Evaluation of defects and disturbances of an existing structures
Uher, Adam ; Láník, Jaromír (referee) ; Schmid, Pavel (advisor)
The bachelor thesis describes the most used methods of diagnostics of building structures, then it focuses on the use in diagnostics of as yet unused modern technologies, potentially replacing several activities in the work of diagnostics and other professions. The advantages of these technologies, specifically 3D scanning, are presented on a case study of the revitalization of an apartment building in Brno, Koliště 33. In the practical part of thesis is described the process of diagnosis of defects and failures of the object, including applied methods and findings. The output of the work is a proposal of measures and a set of recommendations.
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Význam nedestruktivního zkoušení v oblasti hodnocení kvality svarů během procesu
Koucký, Miloslav
The diploma thesis The significance of nondestructive testing in the area of evaluation of the welds quality during the process is focused on the area of creating a material weld joint that cannot be disassembled. In the theoretical part the area of fusion welding, methods of fusion welding and defects of weld joints are analysed. Assessment of current practice of verification of the weld joint quality using nondestructive testing is analysed, too. In the experimental part of the diploma thesis progressive examination for assessing the weld joint quality is suggested from the view of making an expert as-sessment. The suggested method of evaluating the making of welds is also verified in an experimental way and the gained results of the performed measurement are compared with the existing method of determining the weld quality. In the final part of the diploma thesis economical assessment of the benefit of the suggested method and its incorporation into the qualification of an expert engineer is carried out.
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