Detail publikace

State of the art of metal reoxidation study of iron castings

ELBEL, T. ŠENBERGER, J. ZÁDĚRA, A. VLADÍK, R.

Originální název

State of the art of metal reoxidation study of iron castings

Typ

článek v časopise - ostatní, Jost

Jazyk

angličtina

Originální abstrakt

Metal reoxidation causes a number of iron castings defects, particularly when pouring them in green-sand moulds. One of them is pinholes the occurrence of which is explained by several hypotheses. One of possible causes is reoxidation processes in the foundry mould cavity. During its flowing in the gating system and in the mould cavity the liquid metal gets into contact with oxygen from air and water vapour. Secondary oxidation of elements takes place in sequence of their affinity to oxygen. Therefore the authors were aimed at cast irons. Besides indirect methods the reoxidation was researched mainly by direct measurement of oxygen activity during filling of a mould up to solidus temperature. Continuous monitoring of oxygen activity changes in a foundry mould is an original solution since other authors have done their measurements only in a furnace with disposable sensors. Obtained results have confirmed that oxygen activity measurement can serve to the casting quality control. But it is little sensitive for explanation of processes running in a cavity during metal casting.

Klíčová slova

metal reoxidation, oxygen activity measurements, iron castings

Autoři

ELBEL, T.; ŠENBERGER, J.; ZÁDĚRA, A.; VLADÍK, R.

Rok RIV

2007

Vydáno

15. 11. 2007

ISSN

1897-2764

Periodikum

Archives of materials Science and Engineering

Ročník

28

Číslo

11

Stát

Polská republika

Strany od

649

Strany do

652

Strany počet

4

BibTex

@article{BUT43957,
  author="Tomáš {Elbel} and Jaroslav {Šenberger} and Antonín {Záděra} and Radoslav {Vladík}",
  title="State of the art of metal reoxidation study of iron castings",
  journal="Archives of materials Science and Engineering",
  year="2007",
  volume="28",
  number="11",
  pages="649--652",
  issn="1897-2764"
}