National Repository of Grey Literature 4 records found  Search took 0.01 seconds. 
Studying the effect of mixed shielding gas during laser welding of austenitic stainless steels
Žemlová, Markéta ; Kubíček, Jaroslav (referee) ; Mrňa, Libor (advisor)
The diploma thesis deals with problems of laser welding in shielding gases. On the basis of theoretical knowledge in this thesis, was made welding an experiment of 10 samples of steel X5CrNi18-10 in two different shielding gases. Flow of shielding gases has been shown by schlieren method. On the samples of welding joints have been made mechanical tests (tensile test and hardness test). Welded joints were metallography evaluated and structure of them was confirmed by measurements on ferrite meter.
Study of the effect shielding gas on the quality of weld and parameters of laser welding
Procházka, Libor ; Chudík, Ivan (referee) ; Mrňa, Libor (advisor)
The subject of this diploma thesis is the use of laser welding technology in protective atmospheres. Based on the literary research presented in the theoretical part of the thesis, two experiments were made. Welding of materials X5CrNi18-10 and X2CrNiMo17-13-2. Welded sheets were performed in three different protective atmospheres. Samples were made from the welded sheets for measuring tensile strength, hardness, macrostructure and microstructure. These samples were analyzed. The output of the analysis is the evaluation of the impact that the protective atmosphere have on the quality of the welded joint and optimal process parameters.
Study of the effect shielding gas on the quality of weld and parameters of laser welding
Procházka, Libor ; Chudík, Ivan (referee) ; Mrňa, Libor (advisor)
The subject of this diploma thesis is the use of laser welding technology in protective atmospheres. Based on the literary research presented in the theoretical part of the thesis, two experiments were made. Welding of materials X5CrNi18-10 and X2CrNiMo17-13-2. Welded sheets were performed in three different protective atmospheres. Samples were made from the welded sheets for measuring tensile strength, hardness, macrostructure and microstructure. These samples were analyzed. The output of the analysis is the evaluation of the impact that the protective atmosphere have on the quality of the welded joint and optimal process parameters.
Studying the effect of mixed shielding gas during laser welding of austenitic stainless steels
Žemlová, Markéta ; Kubíček, Jaroslav (referee) ; Mrňa, Libor (advisor)
The diploma thesis deals with problems of laser welding in shielding gases. On the basis of theoretical knowledge in this thesis, was made welding an experiment of 10 samples of steel X5CrNi18-10 in two different shielding gases. Flow of shielding gases has been shown by schlieren method. On the samples of welding joints have been made mechanical tests (tensile test and hardness test). Welded joints were metallography evaluated and structure of them was confirmed by measurements on ferrite meter.

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