Publication detail

Some aspects of reoxidation occurrence in ferrous castings

ELBEL, T.

Czech title

Některé aspekty reoxidace ve slitinách železa

English title

Some aspects of reoxidation occurrence in ferrous castings

Type

conference paper

Language

en

Original abstract

Metal reoxidation during casting influences, and in some cases in a decisive way, quality of products in foundries. Reoxidation processes used to be a cause of irreparable defects of castings as e.g. cavities (gas blowhole, pinholes), macroinclusions, the oxide penetration, slag gas defects and adverse influencing of morphology of oxides and supphides eliminated as microinclusions. Study of available literature has confirmed that this problem was not solved sufficiently from the metallurgical point of view for conditions of metal casting. For that reason the author describes and analyses the process of reoxidation of liquid metals in a mould and its influence on casting quality.

Czech abstract

Reoxidace kovu během odlévání ovllivňuje rozhodujícím způsobem kvalitu produktů ve slévárnách. Reoxidace bývá příčinou nenapravidelných defektů při odlévání jako dutiny (bubliny, bodliny) makrovměstků, oxidické penetrace, plynostruskových bublin a nepříznivého ovlivnění morfologie oxidů a sulfidů vyloučených jako mikrovměstky. Ze studia odborné literatury vyplývá, že tento problém nebyl pro podmínky výroby ocelových odlitků zcela vyřešen. Autoři popisují a analyzují příčiny reoxidace lomu ve formě a její vliv na jakost odlitků.

English abstract

Metal reoxidation during casting influences, and in some cases in a decisive way, quality of products in foundries. Reoxidation processes used to be a cause of irreparable defects of castings as e.g. cavities (gas blowhole, pinholes), macroinclusions, the oxide penetration, slag gas defects and adverse influencing of morphology of oxides and supphides eliminated as microinclusions. Study of available literature has confirmed that this problem was not solved sufficiently from the metallurgical point of view for conditions of metal casting. For that reason the author describes and analyses the process of reoxidation of liquid metals in a mould and its influence on casting quality.

Keywords in Czech

železo, reoxidace

Keywords in English

reoxidation, ferrous castings

RIV year

2005

Released

07.05.2005

Publisher

CCNS

Location

Krakow

ISBN

83-919232-3-1

Book

Spolupráca-Wspolpraca 2005

Edition number

1

Pages count

10

BIBTEX


@inproceedings{BUT20404,
  author="Tomáš {Elbel} and Jaroslav {Šenberger},
  title="Some aspects of reoxidation occurrence in ferrous castings",
  booktitle="Spolupráca-Wspolpraca 2005",
  year="2005",
  month="May",
  publisher="CCNS",
  address="Krakow",
  isbn="83-919232-3-1"
}