DE966777C - Process for the production of low carbon steels from scrap containing special carbide formers - Google Patents

Process for the production of low carbon steels from scrap containing special carbide formers

Info

Publication number
DE966777C
DE966777C DEB12749A DEB0012749A DE966777C DE 966777 C DE966777 C DE 966777C DE B12749 A DEB12749 A DE B12749A DE B0012749 A DEB0012749 A DE B0012749A DE 966777 C DE966777 C DE 966777C
Authority
DE
Germany
Prior art keywords
steel
production
low carbon
scrap
carbide formers
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.)
Expired
Application number
DEB12749A
Other languages
German (de)
Inventor
Friedrich Lucht
Dipl-Ing Adolf Sickbert
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.)
Bochumer Verein fuer Gussstahlfabrikation AG
Original Assignee
Bochumer Verein fuer Gussstahlfabrikation AG
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 Bochumer Verein fuer Gussstahlfabrikation AG filed Critical Bochumer Verein fuer Gussstahlfabrikation AG
Priority to DEB12749A priority Critical patent/DE966777C/en
Application granted granted Critical
Publication of DE966777C publication Critical patent/DE966777C/en
Expired 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
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)

Description

Verf ahren zur Herstellung niedrig gekohlter Stähle aus Sonderkarbidbildner enthaltendem Schrott In dem Patent 965 784 ist ein Verfahren zum Herstellen von niedrig gekohltern, vorzugsweise unter o,i % Kohlenstoff enthaltendem Stahl aus Schrott mit Gehalten an Sonderkarbidbildnern, insbesondere rostfreiem Stahlschrott, im Elektroofen geschützt, bei dem die Ofenbeschickung nach dem Einschmelzen in eine Pfanne oder ein anderes einfaches Gefäß, z. B. ein konverterartiges, umgefüllt, dort mit Sauerstoff auf besonders niedrigen Kohlenstoffgehalt gefrischt und darauf in einem Ofen zurückgekippt und fertiggemacht wird. Es hat sich nun herausgestellt, daß das Verfahren nach dem Hauptpatent in der Weise durchgeführt werden kann, daß auf das Zurückkippen des gefrischten Stahl-es in den Ofen verzichtet und der Stahl in Anbetracht des erheblichen Temperaturüberschusses in dem Behälter (Pfanne) fertiggema cht wird, d. h. daß dort die Schlacke reduziert der Stahl desoxydiert und gegebenenfalls, z. B. zur Korrektur, legiert wird. Zur Reduzierung der Schlacke und Desoxvdation des Stahles werden vorzugsweise Aluminium, z. B. in Form von Staub oder Granalien, Ferrosilizium, vorzugsweise gemahlen, Kalziumsilizium und ähnliche Legierungen der Erdalkalien und alkalischen Erden sowie Kohlenstoff und Kalziumkarbid einzeln oder in Mischungen miteinander, verwendet.Process for the production of low carbon steels from scrap containing special carbide formers In the patent 965 784 a process for the production of low carbon steel, preferably below 0.1% carbon containing steel from scrap with contents of special carbide formers, in particular stainless steel scrap, is protected in an electric furnace which the furnace charge after melting in a pan or other simple vessel, z. B. a converter-like, decanted, there is refined with oxygen to a particularly low carbon content and then tipped back in an oven and made ready. It has now been found that the process according to the main patent can be carried out in such a way that the fresh steel does not have to be tipped back into the furnace and the steel is finished in view of the considerable excess temperature in the container (pan), that is, that there the slag is reduced, the steel is deoxidized and optionally, z. B. for correction, is alloyed. To reduce the slag and deoxidation of the steel, preferably aluminum, z. B. in the form of dust or granules, ferrosilicon, preferably ground, calcium silicon and similar alloys of alkaline earths and alkaline earths and carbon and calcium carbide individually or in mixtures with one another.

Claims (1)

PATENTANSPRUCH-Verfahren zum Herstel-len von niedrig gekohltern, vorzugsweise unter o,iol/o Kohlenstoff enthaltendem Stahl aus. Schrott, mit Ge- halten an Sonderkarbidbildnern, insbesondere rostfreiem Stahlschrott, bei dem die Ofenbeschickung nach dem Einschmelzen in eine Pfanne oder ein anderes einfaches Gefäß, z. B. ein konverterartiges, umgefüllt und dort mit Sauerstoff auf besonders niedrigen Kohlenstoffgehalt gefrischt wird, dadurch gekennzeichnet, daß der Stahl. in dem Gefäß (der Pfanne) fertiggemacht WiTd (Zusatz zu Patent 965 784). In Betracht gezogene Druckschriften: USA.-Patentschrift Nr. 1 825 463; »Stahl und Eisen«, 1949, S. 259; 1950, S. IOff-; »The. Iron and Coal Tradies Review« vom 28.5.1948, S. 1104; »Blast Furnace and Steel«, Januar 1948, S. 68/69; Niederschrift über die Sitzung des Stahlwerksausschusses der »Ei,senh#ütte Österreich« in Leoben am 16.3. 1951-PATENT CLAIM process for the production of low-carbon steel, preferably containing less than o, iol / o carbon. Scrap with contents of special carbide formers, in particular stainless steel scrap, in which the furnace charge is placed in a pan or another simple vessel, e.g. B. a converter-like, filled and refined there with oxygen to a particularly low carbon content, characterized in that the steel. WiTd finished in the vessel (pan) (addendum to patent 965 784). Contemplated publications: USA. Patent No. 1,825,463;. "Stahl und Eisen", 1949, p. 259; 1950, S. IOff-; “The. Iron and Coal Tradies Review ”, May 28, 1948, p. 1104; "Blast Furnace and Steel", January 1948, pp. 68/69; Minutes of the meeting of the steelworks committee of "Ei, senh # ütte Austria" in Leoben on March 16. 1951-
DEB12749A 1950-12-01 1950-12-01 Process for the production of low carbon steels from scrap containing special carbide formers Expired DE966777C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEB12749A DE966777C (en) 1950-12-01 1950-12-01 Process for the production of low carbon steels from scrap containing special carbide formers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB12749A DE966777C (en) 1950-12-01 1950-12-01 Process for the production of low carbon steels from scrap containing special carbide formers

Publications (1)

Publication Number Publication Date
DE966777C true DE966777C (en) 1957-09-05

Family

ID=6957266

Family Applications (1)

Application Number Title Priority Date Filing Date
DEB12749A Expired DE966777C (en) 1950-12-01 1950-12-01 Process for the production of low carbon steels from scrap containing special carbide formers

Country Status (1)

Country Link
DE (1) DE966777C (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1825463A (en) * 1930-07-30 1931-09-29 Lewis B Lindemuth Method of reclaiming stainless steel scrap

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1825463A (en) * 1930-07-30 1931-09-29 Lewis B Lindemuth Method of reclaiming stainless steel scrap

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