Indukční zušlechťování a optimalizace mechanických vlastností válcovaných tyčí z nitridační oceli 31CrMoV9

Abstract

This bachelor thesis deals with the induction refining and optimization of mechanical properties of rolled nitriding steel bars 31CrMoV9. The theoretical part is dedicated to the casting of steel, rolling and heat treatment of steel, and the comparison of the available methods of steel refining. For the experimental part, round bars were rolled in three different diameters (32, 52 and 73 mm) and three different diagrams with different tempering temperatures have been arranged for their refining. Based on the results of the mechanical and structural properties, the technology of refining will be optimized according to the customer´s requirements.