Detail publikace
Surface property control by electron beam deflection during hardening
MATLÁK, J. DLOUHÝ, I.
Anglický název
Surface property control by electron beam deflection during hardening
Typ
článek v časopise - ostatní, Jost
Jazyk
en
Originální abstrakt
The usage of the high-energy electron beam source enables repeated surface quenching of chosen locations of an engineering part surface. Different techniques of electron beam deflection allow creating hardened layers of different shapes, hardness levels and thicknesses. Experiments were carried out with 42CrMo4 (1.7225) steel. The deflection modes tested were one-point, 6-point, line, field, and meander. The influence of process speed and defocusing of the electron beam was also taken into account. The electron beam surface quenching resulted in a very fine martensitic microstructure with a hardness of over 700 HV0.5. The thickness of the hardened layers depends on the deflection mode and is affected directly (except field deflection) by process speed. The maximum hardened depth (NCHD) was 1.49 mm. Electron beam defocusing affects the width of the hardened track and can cause extension of the trace up to 40%. The hardness values continuously decrease from the surface to the material core.
Anglický abstrakt
The usage of the high-energy electron beam source enables repeated surface quenching of chosen locations of an engineering part surface. Different techniques of electron beam deflection allow creating hardened layers of different shapes, hardness levels and thicknesses. Experiments were carried out with 42CrMo4 (1.7225) steel. The deflection modes tested were one-point, 6-point, line, field, and meander. The influence of process speed and defocusing of the electron beam was also taken into account. The electron beam surface quenching resulted in a very fine martensitic microstructure with a hardness of over 700 HV0.5. The thickness of the hardened layers depends on the deflection mode and is affected directly (except field deflection) by process speed. The maximum hardened depth (NCHD) was 1.49 mm. Electron beam defocusing affects the width of the hardened track and can cause extension of the trace up to 40%. The hardness values continuously decrease from the surface to the material core.
Klíčová slova anglicky
Electron beam, surface hardening, 42CrMo4 steel, beam deflection
Vydáno
13.01.2018
Nakladatel
Materials Engineering - Materiálové inžinierstvo
Místo
University of Žilina, Slovakia
ISSN
1335-0803
Ročník
24
Číslo
4
Strany od–do
124–130
Počet stran
7
BIBTEX
@article{BUT148913,
author="Jiří {Matlák} and Ivo {Dlouhý},
title="Surface property control by electron beam deflection during hardening",
year="2018",
volume="24",
number="4",
month="January",
pages="124--130",
publisher="Materials Engineering - Materiálové inžinierstvo",
address="University of Žilina, Slovakia",
issn="1335-0803"
}