AT166216B - Process for the production of acid steel - Google Patents

Process for the production of acid steel

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Publication number
AT166216B
AT166216B AT166216DA AT166216B AT 166216 B AT166216 B AT 166216B AT 166216D A AT166216D A AT 166216DA AT 166216 B AT166216 B AT 166216B
Authority
AT
Austria
Prior art keywords
steel
production
acid
acid steel
calcium silicon
Prior art date
Application number
Other languages
German (de)
Original Assignee
Boehler & Co Ag Geb
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 Boehler & Co Ag Geb filed Critical Boehler & Co Ag Geb
Application granted granted Critical
Publication of AT166216B publication Critical patent/AT166216B/en

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  • Treatment Of Steel In Its Molten State (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Herstellung von saurem Stahl 
 EMI1.1 
 des   erfindungsgemässen Verfahrens   eine stark basische metalloxydularme reduzierende KalkSilikat-Schlacke, welche die Silizium-Oxyde und deren Verbindungen jeglichen Dispersitätsgrades weitestgehend aus dem Stahl entfernt. Diese reduzierende basische Kalk-Silikat-Schlacke nimmt aber auch, wie dies bereits bekannt ist, Schwefel und Schwefelverbindungen auf, so dass gleichzeitig eine weitgehende Entschwefelung eintritt. So wurde z. B. bei einem säurebeständigen Stahl mit   18%   Cr und   8% Ni,   der in einem sauer zugestellten kernlosen Induktionsofen erschmolzen war und noch 0-016% S hatte, nach Anwendung des   erfindungsgemässen   Verfahrens eine Verminderung des Schwefelgehaltes auf   0-006"n   festgestellt. 



   Auf breiter Basis durchgeführte Betriebsversuche haben gezeigt, dass insbesondere höherlegierte schwer verformbare Stähle in ihrer   Warm- und Kaltverformbarkeit   bei Anwendung des Verfahrens gemäss   vorliegende ! Erfindung   ausserordentlich verbessert werden. 



   Die Anwendbarkeit des sauren Schmelzverfahrens, das in mancher Hinsicht gegenüber dem basischen Vorteile bietet, wird durch das   erfindungsgemässe   Verfahren ausserordentlich erweitert, weil es die schädlichen Kieselsäureemulsionen der sauren Stähle verlässlich beseitigt und darüber hinaus die bekannte stark entschwefelnde Wirkung des Kalzium-Siliziums auszunützen erlaubt. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Process for the production of acid steel
 EMI1.1
 In the process according to the invention, a strongly basic, low-metal oxide reducing lime-silicate slag, which removes the silicon oxides and their compounds of any degree of dispersion from the steel as far as possible. As is already known, this reducing basic lime-silicate slag also absorbs sulfur and sulfur compounds, so that extensive desulphurisation occurs at the same time. So was z. B. in an acid-resistant steel with 18% Cr and 8% Ni, which was melted in an acid-lined coreless induction furnace and still had 0-016% S, a reduction in the sulfur content to 0-006 "n was found after using the inventive method.



   Operating tests carried out on a broad basis have shown that, in particular, higher-alloy steels that are difficult to deform in their hot and cold deformability when using the method according to the present! Invention are greatly improved.



   The applicability of the acidic melting process, which offers advantages over the basic one in some respects, is greatly expanded by the process according to the invention, because it reliably eliminates the harmful silica emulsions of acidic steels and, moreover, allows the well-known, highly desulphurising effect of calcium-silicon to be used.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

PATENTANSPRUCH : Verfahren zur Herstellung von saurem Stahl durch Behandlung mit Kalzium-Silizium, da- durch gekennzeichnet, dass der nach einem an sich bekannten Verfahren erschmolzene Stahl in der Pfanne oder in einer besonderen Ein- richtung mit Kalzium-Silizium in flüssiger oder geeignet zerkleinerter fester Form innig durch- mischt bzw. durchwirbelt wird, das in einem solchen Ausmass zur Anwendung kommt, dass der Stahl EMI1.2 **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Process for the production of acid steel by treatment with calcium silicon, characterized in that the steel melted by a process known per se is intimately in the pan or in a special device with calcium silicon in liquid or suitably comminuted solid form is mixed or whirled through, that in such a To the extent that the steel is used EMI1.2 ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT166216D 1947-06-03 1947-06-03 Process for the production of acid steel AT166216B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT166216T 1947-06-03

Publications (1)

Publication Number Publication Date
AT166216B true AT166216B (en) 1950-06-26

Family

ID=34200207

Family Applications (1)

Application Number Title Priority Date Filing Date
AT166216D AT166216B (en) 1947-06-03 1947-06-03 Process for the production of acid steel

Country Status (1)

Country Link
AT (1) AT166216B (en)

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