Hodnocení vybraných vlastností PTA návarů na bázi Co

Abstract

This thesis deals with the analysis of PTA weld properties of cobalt under the designation Stellite. In the theoretical part of this work are described the properties of Stellite and its use, particular attention focuses on the Stellite 6. A part of the review is evaluation of the suitable welding methods, focusing on the PTA method. In the experimental part are evaluated four samples, which are different in welding parameters. The samples are evaluated in macro-and microstructure of the materials, then macrohardness and microhardness. The main goal is to determine appropriate welding procedures with regard to the hardness of the transition as smooth as possible in the surface - the base material.