Ověření hodnot tvrdosti vybraných jakostí ocelí s hodnotami vypočtenými na základě jejich chemického složení

Abstract

This work describes the aplication of Jominiho hardenability test that is used in the determination of the quality, mainly the hardness of the material according to the stadards ČSN EN IS0 642. The practical part of testing of the hardness is replaced by Jominiho hardenability test, on the base which it is provided the theoretical calculation of the hardness. A succesful result we can achieve by the analysis of the number of the quantity of smeltings and the quality of steels. From these results with statistical calculations and their chemical composition, we can estimate the required hardness of the material. The work is completed by the graphs in the end of this document.