EP0013271A1 - Verfahren zur Herstellung von halbberuhigtem Stahl - Google Patents

Verfahren zur Herstellung von halbberuhigtem Stahl Download PDF

Info

Publication number
EP0013271A1
EP0013271A1 EP79930030A EP79930030A EP0013271A1 EP 0013271 A1 EP0013271 A1 EP 0013271A1 EP 79930030 A EP79930030 A EP 79930030A EP 79930030 A EP79930030 A EP 79930030A EP 0013271 A1 EP0013271 A1 EP 0013271A1
Authority
EP
European Patent Office
Prior art keywords
steel
gas
ingot
gases
blown
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP79930030A
Other languages
English (en)
French (fr)
Inventor
Paul Metz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Arcelor Luxembourg SA
Original Assignee
Arbed SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Arbed SA filed Critical Arbed SA
Publication of EP0013271A1 publication Critical patent/EP0013271A1/de
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/072—Treatment with gases
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/20—Measures not previously mentioned for influencing the grain structure or texture; Selection of compositions therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D7/00—Casting ingots, e.g. from ferrous metals

Definitions

  • the idea which is at the basis of the process according to the invention consists in taking advantage first of all of the fact that the completely quenched steel solidifies following the casting without the formation of gas and consequently without there being a release of gas which would take place in a manner which is not controllable or difficult to control and then lead to a semi-calmed shade by controlled gas insufflation.
  • This insufflation of gas into quenched steel cannot alter the chemical composition of the steel, since the gas in question does not cause oxidation, so that the risk of a deviation in the grade of the steel that we proposed to manufacture, is discarded.
  • the process according to the invention therefore makes it possible to obtain a steel which combines the favorable properties of semi-quenched steel with those of completely quenched steel, while minimizing the falling of the ingot heads.
  • the advantage of this insufflation technique is that it is possible to change the immersion depth of said lance during insufflation, which can result in an optimization of the degree of distribution of the blown gas. through the body of the ingot.
  • the blown gases are gases which show better solubility in liquid steel at high temperature than at low temperature.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Continuous Casting (AREA)
EP79930030A 1978-12-21 1979-12-12 Verfahren zur Herstellung von halbberuhigtem Stahl Ceased EP0013271A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
LU80693A LU80693A1 (fr) 1978-12-21 1978-12-21 Procede de fabrication d'acier semi-calme
LU80693 1978-12-21

Publications (1)

Publication Number Publication Date
EP0013271A1 true EP0013271A1 (de) 1980-07-09

Family

ID=19729078

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79930030A Ceased EP0013271A1 (de) 1978-12-21 1979-12-12 Verfahren zur Herstellung von halbberuhigtem Stahl

Country Status (2)

Country Link
EP (1) EP0013271A1 (de)
LU (1) LU80693A1 (de)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2345921A1 (de) * 1973-09-12 1975-03-20 Solint Consulting Establishmen Abdeckmasse fuer metallurgische schmelzen
DE2454554A1 (de) * 1973-11-22 1975-05-28 Sacilor Verfahren zur herstellung von zusammengesetzten stahlbloecken
DE2439263B1 (de) * 1974-08-16 1975-08-28 Hoesch Werke Ag, 4600 Dortmund Aufhängevorrichtung für eine Lanze zur Spülgasbehandlung von Metall-, vorzugsweise von Stahlschmelzen
DE2526797A1 (de) * 1974-06-18 1976-01-08 British Steel Corp Verfahren zum giessen von stahl in einer kokille
DE2552474B2 (de) * 1975-11-22 1978-06-08 Eiserntaler Spezial-Schweissbetrieb Gmbh, 5904 Eiserfeld-Eisern Gasspülstein, insbesondere für Schmelzwannen, -tiegel u.dgl

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2345921A1 (de) * 1973-09-12 1975-03-20 Solint Consulting Establishmen Abdeckmasse fuer metallurgische schmelzen
DE2454554A1 (de) * 1973-11-22 1975-05-28 Sacilor Verfahren zur herstellung von zusammengesetzten stahlbloecken
DE2526797A1 (de) * 1974-06-18 1976-01-08 British Steel Corp Verfahren zum giessen von stahl in einer kokille
DE2439263B1 (de) * 1974-08-16 1975-08-28 Hoesch Werke Ag, 4600 Dortmund Aufhängevorrichtung für eine Lanze zur Spülgasbehandlung von Metall-, vorzugsweise von Stahlschmelzen
DE2552474B2 (de) * 1975-11-22 1978-06-08 Eiserntaler Spezial-Schweissbetrieb Gmbh, 5904 Eiserfeld-Eisern Gasspülstein, insbesondere für Schmelzwannen, -tiegel u.dgl

Also Published As

Publication number Publication date
LU80693A1 (fr) 1980-07-21

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): BE DE FR GB IT

17P Request for examination filed
STAA Information on the status of an ep patent application or granted ep patent

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18R Application refused

Effective date: 19811008

RIN1 Information on inventor provided before grant (corrected)

Inventor name: METZ, PAUL