Publication detail

Oxydation re-melting of the Cr13Ni cast steel by means of oxygen-blowing

LEVÍČEK, P. STRÁNSKÝ, K. ŠENBERGER, J.

Czech title

Oxidační přetavování vysokolegovaných ocelí Cr13Ni vháněním kyslíku

English title

Oxydation re-melting of the Cr13Ni cast steel by means of oxygen-blowing

Type

journal article - other

Language

en

Original abstract

Corrosion resistant 13% Cr and 1% Ni cast steel are used to produce castings for the Kaplan, Pelton and Francis turbines. These cast steels have also a satisfactory cavitation resistance. The oxidation re-melting process, where oxygen is blown into the bath, was elaborated in order to reduce the gas content (hydrogen and nitrogen) in re-melted corrosion-resistant 13% and 1% Ni steel scrap. This technology was tested on and elaborated for twenty-five melts, with special regard to oxygen-blowing conditions, mechanical properties (verified by the impact test) of the cast steel, and suppressing the formation of gas holes in the castings. Basic electric arc furnaces were used in the oxidation re-melting process of steel scrap.

Czech abstract

Vysokolegované oceli odolné vůči korozi (Cr13Ni1) jsou nejčastěji používány na výrobu Kaplanových, Peltonových a Francisových turbín. Tyto lité oceli jsou také odolné vůči kavitaci. Oxidační přetavbou, kde je kyslík vháněn to tavící se lázně, se může redukovat množství plynů (vodíku a dusíku) z ocelového odpadu. Tato technologie byla laboratorně testována na 25 přetavbách a byly sledovány podmínky vhánění kyslíku, mechanické vlastnosti jednotlivých taveb a struktura materiálu (póry, staženiny). Na experiment byly vybrány elektrické pece.

English abstract

Corrosion resistant 13% Cr and 1% Ni cast steel are used to produce castings for the Kaplan, Pelton and Francis turbines. These cast steels have also a satisfactory cavitation resistance. The oxidation re-melting process, where oxygen is blown into the bath, was elaborated in order to reduce the gas content (hydrogen and nitrogen) in re-melted corrosion-resistant 13% and 1% Ni steel scrap. This technology was tested on and elaborated for twenty-five melts, with special regard to oxygen-blowing conditions, mechanical properties (verified by the impact test) of the cast steel, and suppressing the formation of gas holes in the castings. Basic electric arc furnaces were used in the oxidation re-melting process of steel scrap.

Keywords in English

Oxidation, turbines, Cr13Ni, oxygen-blowing

Released

01.09.2003

Publisher

Stowarzyszenie techniczne odlewników Polskich

Location

Zakopiańska 73 Kraków Poland

ISSN

0033-2275

Journal

Przeglad Odlewnictwa

Volume

2003

Number

9

Pages from–to

288–294

Pages count

7

BIBTEX


@article{BUT46422,
  author="Petr {Levíček} and Karel {Stránský} and Jaroslav {Šenberger},
  title="Oxydation re-melting of the Cr13Ni cast steel by means of oxygen-blowing",
  journal="Przeglad Odlewnictwa",
  year="2003",
  volume="2003",
  number="9",
  month="September",
  pages="288--294",
  publisher="Stowarzyszenie techniczne odlewników Polskich",
  address="Zakopiańska 73
Kraków
Poland",
  issn="0033-2275"
}