Materiálový rozbor kobaltových slitin na výrobu rozvlákňovacích hlav pro sklářský průmysl

Abstract

The goal of the thesis is a material analysis of creep resistant cobalt superalloys URSA stellite and Co stellite, which are used for the production of spinning units for glass wool manufacturing. In this diploma thesis the analysis of chemical composition, gas contents, metallographic analysis and electronomical microscopic analysis was performed. Subsequently were evaluated the tensile test specimens performed at standart temperature from the perspective of the fracture line progress. Based on the analysis, the quality of the Co stellite alloy was assesed, in which the technical procedure was not followed properly.