Publication detail

Materials That Do Not Form Any Defects After WEDM

MOURALOVÁ, K. FRIES, J. BENEŠ, L.HOUŠKA, P

Czech title

Materiály netvořící po WEDM žádné defekty

English title

Materials That Do Not Form Any Defects After WEDM

Type

journal article in Web of Science

Language

en

Original abstract

Wire Electric Discharge Machining (WEDM) is an unconventional machining technology that uses electrical impulses to generate very high temperatures to cut material. The WEDM process hence causes some unfortunate defects, such as cracks and burnt cavities, which can impact the correct functionality of the machined pieces and shorten their service life. This study was carried out to understand which materials remain defect-free after WEDM. The examined materials were the Ampcoloy 35 copper alloy, the high-entropy steels FeCoCrMnNi and FeCoCrMnNiC0.2, and the B1914 and Nimonic 263 nickel alloys. The influence of the machining parameters, namely the pulse off time, gap voltage, discharge current, pulse on time, and wire feed, on the cutting speed and the surface topography of the machined piece was investigated. The surface morphology, the state of the subsurface layer in a cross-section, and the number of diffused elements from the wire electrode were analysed. All the analysed materials were found completely suitable for WEDM machining as they do not form any surface or subsurface defects.

Czech abstract

Elektroerozivní drátové řezání (WEDM) je nekonvenční technologie obrábění, která k dělení materiálu využívá elektrických impulzů za vzniku velmi vysokých teplot. Proces WEDM tak bohužel na mnoha materiálech způsobuje vznik defektů v podobě trhlin nebo vypálených kavit, které mohou ovlivňovat správnou funkčnost takto vyrobených dílů nebo zkracovat jejich životnost. Z toho důvodu byla provedena tato studie, která měla za cíl zmapovat materiály, které po WEDM netvoří žádné defekty. Těmi byla měděná slitina Ampcoloy 35, vysokoentropní oceli FeCoCrMnNi a FeCoCrMnNiC0.2 a niklové slitiny B1914 a Nimonic 263. U všech těchto materiálů byl analyzován vliv nastavení parametrů stroje (pulse off time , gap voltage, discharge current, pulse on time, wire feed) na rychlost řezání a topografii obrobeného povrchu. Dále byla analyzována morfologie povrchů, stav podpovrchové vrstvy v příčném řezu a také množství difundovaných prvků z drátové elektrody. Bylo zjištěno, že všechny analyzované materiály jsou naprosto vhodné pro WEDM obrábění, protože netvoří žádné povrchové ani podpovrchové defekty.

English abstract

Wire Electric Discharge Machining (WEDM) is an unconventional machining technology that uses electrical impulses to generate very high temperatures to cut material. The WEDM process hence causes some unfortunate defects, such as cracks and burnt cavities, which can impact the correct functionality of the machined pieces and shorten their service life. This study was carried out to understand which materials remain defect-free after WEDM. The examined materials were the Ampcoloy 35 copper alloy, the high-entropy steels FeCoCrMnNi and FeCoCrMnNiC0.2, and the B1914 and Nimonic 263 nickel alloys. The influence of the machining parameters, namely the pulse off time, gap voltage, discharge current, pulse on time, and wire feed, on the cutting speed and the surface topography of the machined piece was investigated. The surface morphology, the state of the subsurface layer in a cross-section, and the number of diffused elements from the wire electrode were analysed. All the analysed materials were found completely suitable for WEDM machining as they do not form any surface or subsurface defects.

Keywords in Czech

WEDM; elektroerozivní drátové řezání; trhliny; ampcoloy; vysoce entropní oceli; B1914; nimonic

Keywords in English

WEDM; wire electrical discharge machining; cracks; ampcoloy; high entropy alloy; B1914; nimonic

Released

06.12.2024

Publisher

MDPI

Location

BASEL

ISSN

2227-9717

Volume

12

Number

11

Pages count

15

BIBTEX


@article{BUT193542,
  author="Kateřina {Mouralová} and Jiří {Fries} and Libor {Beneš},
  title="Materials That Do Not Form Any Defects After WEDM",
  year="2024",
  volume="12",
  number="11",
  month="December",
  publisher="MDPI",
  address="BASEL",
  issn="2227-9717"
}