AT18417B - Process of surface carbonization of iron and steel using carbides. - Google Patents

Process of surface carbonization of iron and steel using carbides.

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Publication number
AT18417B
AT18417B AT18417DA AT18417B AT 18417 B AT18417 B AT 18417B AT 18417D A AT18417D A AT 18417DA AT 18417 B AT18417 B AT 18417B
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AT
Austria
Prior art keywords
carbides
iron
steel
surface carbonization
carbonization
Prior art date
Application number
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German (de)
Inventor
Ewald Dr Engels
Original Assignee
Ewald Dr Engels
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
Priority claimed from DE1902151715D external-priority patent/DE151715C/de
Application filed by Ewald Dr Engels filed Critical Ewald Dr Engels
Application granted granted Critical
Publication of AT18417B publication Critical patent/AT18417B/en

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Description

  

   <Desc/Clms Page number 1> 
 



   Österreichische   PATENTSCHRIFT. ? 18417.   



   DR. EWALD ENGELS m DÜSSELDORF. 



  Verfahren der Oberflächenkohlung von Eisen und Stahl mittels Karbiden. 



   Bisher wurden bei der   Oberflächenkohlung   des Eisens und Stahls vermittelst Karbiden diese dem Eisen und Stahl allein zugesetzt, wobei vorausgesetzt wurde, dass sie durch die Wirkung der Hitze oder vermittelst des elektrischen Stromes zersetzt werden. Bei diesen 
 EMI1.1 
 finden konnten, deren Zersetzung in   der. Hitze   oder durch Elektrizität möglich war. Hiebei war die Verwendung einer Reihe von sehr wertvollen Karbiden, z. B. des Siliziumkarbides, ausgeschlossen, welche entweder durch Hitze oder   Elektrizität   überhaupt nicht zersetzt werden oder zu ihrer Zersetzung so hohe Hitzegrade erfordern, dass das zu behandelnde Material hiebei verbrennen würde. 
 EMI1.2 
 zwischen dem Kohlenstoff und dem Eisen, also die Kohlung des Eisens, schneller vor sich geht. 



   Beispiel : Siliziumkarbid   Sj ('wird   mit Natriumsulfat Na2 SO4 gemischt und das   Gemisch   auf noch kaltes Eisen oder Stahl aufgebracht und dann mit diesem geglüht oder 
 EMI1.3 
 



   Was die Art der Zuschläge betrifft, so sollen im jeweiligen Falle je nach der Art der verwendeten Karbilde solche Mittel zur Anwendung   kommen,   durch welche die betreffenden Karbide zersetzt werden. Als Beispiele seien folgende angegeben : 
 EMI1.4 
 



   Das Karbid wird also derart gespalten, dass zuerst Kohlenstoff im status nascens, welcher bekanntlich von dem   giüh   nden Eisen oder Stahl sehr leicht aufgenommen wird, entsteht. 



   Es ist bekannt geworden, Kohle allein in Gegenwart eines metalloxyde zur Kohlung von EIsen zu benutzen. Von diesem Verfahren unterschiedet sich das vorliegende dadurch, dass an Stelle der Kohle Karbide benutzt werden, und zwar in Gegenwart von Zuschlägen, welche die Karbide zersetzen. 



     Es ist ferner bekannt geworden, Karbide   mit zersetzend wirkenden Stoffen dem 
 EMI1.5 
 scheidet sich das vorliegende dadurch, dass das Karbid mit seinen Zuschlägen mit festem Eisen oder Stahl, also nicht mit flüssigem, zusammengebracht wird. 

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



   <Desc / Clms Page number 1>
 



   Austrian PATENT LETTERING. ? 18417.



   DR. EWALD ENGELS m DÜSSELDORF.



  Process of surface carbonization of iron and steel using carbides.



   So far, in the surface carbonization of iron and steel, carbides were added to iron and steel by means of carbides, whereby it was assumed that they are decomposed by the action of heat or by means of electric current. With these
 EMI1.1
 could find their decomposition in the. Heat or electricity. This involved the use of a number of very valuable carbides, e.g. B. silicon carbide, which are either not decomposed at all by heat or electricity or require such high degrees of heat for their decomposition that the material to be treated would burn.
 EMI1.2
 between carbon and iron, i.e. the carbonization of iron, takes place more quickly.



   Example: silicon carbide Sj ('is mixed with sodium sulphate Na2 SO4 and the mixture is applied to iron or steel that is still cold and then annealed with this or
 EMI1.3
 



   As far as the type of aggregate is concerned, in each case, depending on the type of carbide used, such means should be used by which the carbides in question are decomposed. The following are examples:
 EMI1.4
 



   The carbide is split in such a way that first carbon in the status nascens, which is known to be very easily absorbed by the good iron or steel, is formed.



   It has become known to use coal alone in the presence of a metal oxide to carbonize iron. The present method differs from this method in that carbides are used instead of carbon, in the presence of aggregates that decompose the carbides.



     It has also become known to use the carbides with decomposing substances
 EMI1.5
 The present one differs in that the carbide with its aggregates is brought together with solid iron or steel, i.e. not with liquid.

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

 

Claims (1)

PATENT-ANSPRUCH : Verfahren der Oberflächenkohlung von Eisen und Stahl mittels Karbiden, dadurch gekennzeichnet, dass die Karbide zugleich mit solchen Zuschlägen zur Anwendung kommen, welche beim Glühen die Karbide zersetzen. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Method of surface carbonization of iron and steel by means of carbides, characterized in that the carbides are used at the same time as additives which decompose the carbides during annealing. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT18417D 1902-11-12 1903-11-30 Process of surface carbonization of iron and steel using carbides. AT18417B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1902151715D DE151715C (en) 1902-11-12

Publications (1)

Publication Number Publication Date
AT18417B true AT18417B (en) 1904-11-25

Family

ID=5674647

Family Applications (1)

Application Number Title Priority Date Filing Date
AT18417D AT18417B (en) 1902-11-12 1903-11-30 Process of surface carbonization of iron and steel using carbides.

Country Status (1)

Country Link
AT (1) AT18417B (en)

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