DE917975C - Process to increase electrical steel production - Google Patents

Process to increase electrical steel production

Info

Publication number
DE917975C
DE917975C DET1101D DET0001101D DE917975C DE 917975 C DE917975 C DE 917975C DE T1101 D DET1101 D DE T1101D DE T0001101 D DET0001101 D DE T0001101D DE 917975 C DE917975 C DE 917975C
Authority
DE
Germany
Prior art keywords
steel
electrical steel
steel production
increase electrical
production
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
DET1101D
Other languages
German (de)
Inventor
Dr Hermann Brandi
Heinz Hoefges
Alfred Lange
Dr Jakob Willems
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.)
HUETTENWERKE PHOENIX AG
Thyssen AG
Original Assignee
HUETTENWERKE PHOENIX AG
August Thyssen Huette 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 HUETTENWERKE PHOENIX AG, August Thyssen Huette AG filed Critical HUETTENWERKE PHOENIX AG
Priority to DET1101D priority Critical patent/DE917975C/en
Application granted granted Critical
Publication of DE917975C publication Critical patent/DE917975C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21CPROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/52Manufacture of steel in electric furnaces
    • C21C5/5252Manufacture of steel in electric furnaces in an electrically heated multi-chamber furnace, a combination of electric furnaces or an electric furnace arranged for associated working with a non electric furnace

Description

Verfahren zur Steigerung der Elektrostahlerzeugung Im Patent 91q.380 ist ein Verfahren geschützt zur Herstellung stickstoff-, sauerstoff- und phosphorarmer Stähle mit SM-Stahl-ähnlichen Eigenschaften durch Zugabe von oxydischen oder anderen Zuschlägen zu Beginn der Schmelze oder gegen Ende der Entkohlung, bei dem die Zuschläge in solchem Maße zugegeben werden, daß die Stickstoffgehalte stets unter o,ozo °/o liegen, und anschließend wärmespendende Mittel, die keine Aufstickung und Rückphosphorung hervorrufen, wie Kalzium und/oder Magnesium bzw. deren Legierungen und Silizium und/oder Aluminium, in solchen Mengen zugesetzt und oxydiert werden, daß der Stahl einwandfrei vergossen werden kann. Vor allem günstig ist dabei die Verwendung von Kalzium-Silizium.Method of increasing electric steel production in patent 91q.380 is a proprietary process for the production of low nitrogen, oxygen and phosphorus Steels with properties similar to SM steel by adding oxidic or other Surcharges at the beginning of the melt or towards the end of the decarburization, in which the surcharges are added to such an extent that the nitrogen content is always below o, ozo ° / o lying, and then warming agents that do not have nitrogenization and phosphorus backing such as calcium and / or magnesium or their alloys and silicon and / or aluminum, are added and oxidized in such amounts that the steel can be properly potted. The use of Calcium silicon.

Gemäß der Erfindung wird das Verfahren gemäß Hauptpatent dahingehend angewendet, daß es als Mittel zur Steigerung der Erzeugung im Elektrostahlwerk dient.According to the invention the method according to the main patent is to that effect applied that it serves as a means of increasing production in the electric steel mill.

Die Arbeitsweise gestaltet sich dabei wie folgt Nach dem Verfahren des Hauptpatents wird ein phosphor- und stickstoffarmes Vormetall mit SM-Stahlähnlichen Eigenschaften im Konverter hergestellt. Um den Phosphorgehalt mit Sicherheit besonders niedrig zu halten, empfiehlt es sich, beim Ausleeren des Stahles in der Gießpfanne bekannterweise noch i bis 3 kg festes Doppelkarbonat je Tonne Stahl zuzugeben. Die Zugabe dieses festen Karbonats beeinträchtigt die Vergießbarkeit des Metalles nicht, da die Temperaturreserve bei Aufheizung mit Kalzium-Silizium genügend groß ist, so daß auch bei längerem Anfahrweg zum Elektrostahlwerk keine Pfannenbären entstehen. Nach dem Einfüllen in den Elektroofen wird unter einer weißen Schlacke sofort legiert. Nach der Zugabe der Legierungsmittel wird der Stahl in bekannter Weise abgestochen und vergossen. Der so hergestellte Stahl ist qualitativ dem nach der bisherigen Arbeitsweise hergestellten Elektrostahl gleichwertig. Durch Einsparen der Koch- und Frischperiode wird eine wesentliche Leistungssteigerung und Steigerung der Ofenhaltbarkeit im Elektrostahlwerk erzielt. Der Hauptwert dieses Verfahrens liegt darin, daß ein stickstoff- und phosphorarmes Vormetall im Elektrostahlwerk angeliefert wird, das nicht mehr entstickt und entsphosphort zu werden braucht. Dadurch wird ein Zeitgewinn erreicht, der zu einer wesentlichen Produktionssteigerung von 3o bis 5o l)/, im Stahlwerk führt. Nachstehende Zahlentafel zeigt die Schmelzen bei Anwendung dieses Verfahrens. Zahlentafel Sonderduplexverfahren für das Elektrostahlwerk Chargen- C Mn P S Si N. Nr. % 0i01 % °lo °io 465496 0,05 0,04 o,o16 o,o22 Sp. o,oio 466475 0,01 o,12 0,010 0,023 Sp. 0,009 467301 o,o6 0,04 0,020 0,039 o,oog 468 154 0,03 Sp. 0,020 0,030 Sp. o,oo8 The method of operation is as follows: According to the process of the main patent, a pre-metal low in phosphorus and nitrogen with properties similar to SM steel is produced in the converter. In order to keep the phosphorus content particularly low, it is advisable to add 1 to 3 kg of solid double carbonate per ton of steel when emptying the steel in the ladle. The addition of this solid carbonate does not affect the castability of the metal, as the temperature reserve when heated with calcium-silicon is sufficiently large so that no pan bears are created even after a long approach to the electric steelworks. After pouring into the electric furnace, alloying takes place immediately under a white slag. After the addition of the alloying agent, the steel is tapped and cast in a known manner. The steel produced in this way is qualitatively equivalent to the electrical steel produced according to the previous procedure. By saving the cooking and freshness period, a significant increase in performance and an increase in furnace life in the electric steelworks is achieved. The main value of this process is that a low-nitrogen and low-phosphorus pre-metal is delivered to the electric steelworks, which no longer needs to be denitrified and deshosphorized. This saves time, which leads to a significant increase in production of 3o to 5o l) /, in the steelworks. The table below shows the melts using this method. Number board Special duplex process for the electric steelworks Batch- C Mn PS Si N. No. % 0i01% ° lo ° io 465496 0.05 0.04 o, o16 o, o22 Sp. O, oio 466475 0.01 o, 12 0.010 0.023 col. 0.009 467301 o, o6 0.04 0.020 0.039 o, oog 468 154 0.03 col. 0.020 0.03 0 col. O, oo8

Claims (1)

PATENTANSPRUCH: Verfahren zur Steigerung der Elektrostahlerzeugung durch Anwendung des Verfahrens nach Patent 914 38o, dadurch gekennzeichnet, daß der im Konverter hergestellte Stahl mit SM-Stahl-ähnlichen Eigenschaften nach dem Einfüllen in den Elektroofen unter einer weißen Schlacke legiert und dann nach Zugabe der Legierungsmittel in bekannter Weise abgestochen und vergossen wird.PATENT CLAIM: Process for increasing electrical steel production using the method of patent 914,380, characterized in that the steel produced in the converter with SM steel-like properties according to the Filling in the electric furnace under a white slag and then alloyed after adding the alloying agent is tapped and cast in a known manner.
DET1101D 1944-05-12 1944-05-12 Process to increase electrical steel production Expired DE917975C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DET1101D DE917975C (en) 1944-05-12 1944-05-12 Process to increase electrical steel production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET1101D DE917975C (en) 1944-05-12 1944-05-12 Process to increase electrical steel production

Publications (1)

Publication Number Publication Date
DE917975C true DE917975C (en) 1954-09-16

Family

ID=7543353

Family Applications (1)

Application Number Title Priority Date Filing Date
DET1101D Expired DE917975C (en) 1944-05-12 1944-05-12 Process to increase electrical steel production

Country Status (1)

Country Link
DE (1) DE917975C (en)

Similar Documents

Publication Publication Date Title
DE917975C (en) Process to increase electrical steel production
US3328164A (en) Prealloy for the treatment of iron and steel melts
DE815489C (en) Manufacture of transformer and dynamo steel
DE1458810C3 (en) Process for the production of an iron-silicon alloy with an oxygen content of about 0.0025%
DE1966686C3 (en) Process for the production of magnetic steel sheets with a cube texture
DE878358C (en) Process for making a steel with a low nitrogen content in the Thomas pear
DE973313C (en) Process for the production of alloyed steels according to the basic wind freshening process
DE2100115C3 (en) Process for the production of a steel alloy with a high chromium content from a melt refined with oxygen
DE701466C (en) Process for producing cast iron in a foundry shaft furnace
DE904900C (en) Process for the production of Thomas steel with reduced sensitivity to aging
AT144837B (en) Process for the manufacture of low-phosphorus steel.
DE3245098A1 (en) Process for the manufacture of high-grade steels which are premelted in the converter
AT163631B (en) Process for the production of an agent for carbonizing, deoxidizing and degassing liquid pig iron or steel
FR2272186A1 (en) Iron alloy contg aluminium, manganese and silicon - used for deoxidising and adjusting molten steel compsn
DE622732C (en) Process for the production of ferro-alloys
AT252978B (en) Process for the production of practically slag-free steels in a basic electric arc furnace or in a basic induction furnace
DE686151C (en) Process for the production of iron and steel in the basic Siemens-Martin furnace without the addition of special deoxidizing agents
DE972820C (en) Process for the production of transformer and dynamo steels
DE927510C (en) Process to increase production in the electric steelworks
SU1560601A1 (en) Alloy for alloying high-speed and structural steels
DE1923581C3 (en) Process for the production of magnetic steel sheets with a cube texture
DE663146C (en) Process for producing titanium steel
DE2026483B2 (en) PROCESS FOR THE PRODUCTION OF LOW CARBON STEEL
AT153487B (en) Process for decarburizing metals or alloys containing carbon.
AT149970B (en) Process for the production of titanium steels and steels made thereafter for various purposes.