RT Journal Article
SR Electronic
A1 Beneš, Petr
A1 Vítovec, Vilém
T1 Selected NDT techniques in heat treatment control
JF Manufacturing Technology Journal
YR 2021
VO 21
IS 1
SP 20
OP 28
DO 10.21062/mft.2021.007
UL https://journalmt.com/artkey/mft-202101-0007.php
AB The quality of machine parts is determined not only by the quality of the materials themselves, but also by their heat treatment, which also includes frequently used chemical-thermal processes, such as case-hardening, leading to an increase in the mechanical properties of the surface layers of the material. Heat treatment involves thermal diffusion processes, which are quite complex and therefore there is always a certain probability that the desired material state will not be created. It is therefore desirable to have control methods, preferably of a non-destructive nature, which can detect imperfections and thus prevent future damage that could occur in this way. The paper deals with the use of commonly used non-destructive material testing techniques such as eddy currents, ultrasonic control and acoustic emission method to verify the correctness of thermal and case-hardening processing of steels.