AT112619B - Perlite cast iron. - Google Patents

Perlite cast iron.

Info

Publication number
AT112619B
AT112619B AT112619DA AT112619B AT 112619 B AT112619 B AT 112619B AT 112619D A AT112619D A AT 112619DA AT 112619 B AT112619 B AT 112619B
Authority
AT
Austria
Prior art keywords
cast iron
perlite
steel
graphite
perlite cast
Prior art date
Application number
Other languages
German (de)
Original Assignee
Lanz Fa Heinrich
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 Lanz Fa Heinrich filed Critical Lanz Fa Heinrich
Application granted granted Critical
Publication of AT112619B publication Critical patent/AT112619B/en

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  • Treatment Of Steel In Its Molten State (AREA)

Description

  

   <Desc/Clms Page number 1> 
 



  Perlitgusseisen. 



   Wie bekannt, wird Stahl durch Zusätze von Nickel, Chrom, Molybdän oder anderen Metallen veredelt. Versuche, die darauf hinausliefen, Gusseisen mit den gleichen Zusätzen zu verbessern, mussten 
 EMI1.1 
 den Ausschlag für seine Festigkeitseigenschaften gibt. Man könnte nun den Einfluss des Graphits einfach dadurch einschränken, dass man kohlenstoffärmeres Gusseisen verwendet. Dem steht aber entgegen, dass kohlenstoffarmes Gusseisen weiss erstarrt, also spröde und so hart wird, dass es nicht mehr bearbeitbar ist. Für   Maschinenguss   ist es daher nicht brauchbar. 



   Nun kann man die mechanischen und physikalischen Eigenschaften des Gusseisens an sich in bekannter Weise dadurch heben, dass man dem Gusseisen ein Gefüge erteilt, das im wesentlichen durch lamellaren Perlit und fein verteilten Graphit gekennzeichnet ist ; dieses Gefüge ist, abgesehen von dem Graphit, dem eutektischen Stahl eigen. Perlitgusseisen unterscheidet sich demnach vom gewöhnlichen eutektischen Stahl lediglich durch die Anwesenheit von Graphit. Je weniger Graphit vorhanden ist und je feiner und gleichmässiger er zwischen dem Perlit gelagert ist, desto dichter ist das Material, desto höher sind seine Festigkeitswerte, desto mehr nähert es sich dem eutektischen Stahl.

   Die Herstellung von Perlitgusseisen gestattet aber auch, an die äusserste untere Grenze des Kohlenstoffgehaltes zu gehen, ohne die für die Verwendung als   Maschinenguss   zulässige Härte zu überschreiten. 



   Die Erfindung besteht darin, dass die Veredelung des Gusseisens mit den für die Stahlveredelung bekannten Metallen, wie Nickel, Chrom, Molybdän, Vanadium, Titan, bei der Herstellung von Perlitgusseisen durchgeführt wird, so dass ein veredeltes Perlitgusseisen entsteht. 

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



   <Desc / Clms Page number 1>
 



  Perlite cast iron.



   As is known, steel is refined by adding nickel, chromium, molybdenum or other metals. Attempts that boiled down to improving cast iron with the same additives had to be
 EMI1.1
 the decisive factor for its strength properties. One could now limit the influence of graphite simply by using cast iron that is lower in carbon. However, this is countered by the fact that low-carbon cast iron solidifies white, i.e. becomes brittle and so hard that it can no longer be machined. It is therefore not suitable for machine casting.



   The mechanical and physical properties of cast iron can be increased in a known manner by giving the cast iron a structure that is essentially characterized by lamellar pearlite and finely divided graphite; apart from graphite, this structure is peculiar to eutectic steel. Perlite cast iron differs from ordinary eutectic steel only in the presence of graphite. The less graphite there is and the finer and more evenly it is stored between the pearlite, the denser the material, the higher its strength values, the closer it comes to the eutectic steel.

   The production of perlite cast iron also makes it possible to go to the extreme lower limit of the carbon content without exceeding the hardness permissible for use as machine casting.



   The invention consists in that the finishing of the cast iron with the metals known for steel finishing, such as nickel, chromium, molybdenum, vanadium, titanium, is carried out in the production of pearlite cast iron, so that a refined pearlite cast iron is produced.

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

 

Claims (1)

PATENT-ANSPRUCH : Perlitgusseisen, dadurch gekennzeichnet, dass es die für die Veredelung von Stahl bekannten metallischen Zusätze, wie Nickel, Chrom, Molybdän, Vanadium, Titan, enthält. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Perlite cast iron, characterized in that it contains the metallic additives known for the refinement of steel, such as nickel, chromium, molybdenum, vanadium, titanium. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT112619D 1923-06-23 1924-04-15 Perlite cast iron. AT112619B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE112619X 1923-06-23

Publications (1)

Publication Number Publication Date
AT112619B true AT112619B (en) 1929-03-25

Family

ID=5653003

Family Applications (1)

Application Number Title Priority Date Filing Date
AT112619D AT112619B (en) 1923-06-23 1924-04-15 Perlite cast iron.

Country Status (1)

Country Link
AT (1) AT112619B (en)

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