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MOURALOVÁ, K. PROKEŠ, T. BENEŠ, L. SLIWKOVÁ, P.
Original Title
Analysis of subsurface defects occurrence in abrasion resistant Creusabro steel after WEDM including the study of morphology and surface topography
Type
journal article in Web of Science
Language
English
Original Abstract
Unconventional wire electrical discharge machining technology (WEDM) is an indispensable part of the production of many industrial devices. Material separation takes place at very high local temperatures, and therefore some undesirable surface and sub-surface defects are formed. Not only the occurrence of defects but also the quality of the machined surface is very important for the end customer, so it is necessary to monitor it carefully. For this reason, a 33-round planned experiment was carried out for the study of the impact of the machine parameters setup (gap voltage, pulse on time, pulse off time, discharge current, wire speed) on the topography and morphology of the abrasion resistant steel Creusabro 4800. Metallographic preparations of all samples that allowed the study of subsurface defects using light and electron microscopy were produced. In order to investigate changes in the chemical composition of the surface and subsurface layers of the effects of WEDM machining a complex chemical composition analysis (EDX) was performed. A significant effect of the machine parameters setup on the occurrence of subsurface defects was demonstrated and the presence of burned cavities could be completely eliminated with machine parameters setup: gap voltage=60 V, pulse on time=8 μs, pulse off time=40 μs, wire speed=12 m•min-1 and discharge current=25 A.
Keywords
WEDM, electrical discharge machining,Creusabro 4800, defects, morphology, topography, machining parameters
Authors
MOURALOVÁ, K.; PROKEŠ, T.; BENEŠ, L.; SLIWKOVÁ, P.
Released
4. 10. 2019
Publisher
Taylor & Francis Group
Location
Spojené státy americké
ISBN
1091-0344
Periodical
MACHINING SCIENCE AND TECHNOLOGY
Year of study
23
Number
6
State
United States of America
Pages from
1
Pages to
18
Pages count
URL
https://www.tandfonline.com/doi/full/10.1080/10910344.2019.1669166
BibTex
@article{BUT156857, author="Kateřina {Mouralová} and Tomáš {Prokeš} and Libor {Beneš} and Petra {Sliwková}", title="Analysis of subsurface defects occurrence in abrasion resistant Creusabro steel after WEDM including the study of morphology and surface topography", journal="MACHINING SCIENCE AND TECHNOLOGY", year="2019", volume="23", number="6", pages="1--18", doi="10.1080/10910344.2019.1669166", issn="1091-0344", url="https://www.tandfonline.com/doi/full/10.1080/10910344.2019.1669166" }