AT150979B

AT150979B - Method and device for decarburizing metals or alloys containing carbon.

Info

Publication number: AT150979B
Authority: AT
Original assignee: Wacker Chemie Gmbh
Priority date: 1934-11-23
Filing date: 1935-10-09
Publication date: 1937-10-11
Also published as: CH186882A

Description

  

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  Verfahren und Vorrichtung zum Entkohlen von kohlenstoffhaltigen Metallen oder Legierungen. 
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 sich, ohne weiteren Schaden anzurichten, in der Mulde 11 des Behälters 4. Die Kühlung der Vorrichtung im Betriebe erfolgt zweckmässig durch Berieselung des Gefässes 4 von aussen. Das Einströmen von
Gasen bzw. Luft zwecks schneller Erhöhung des Druckes wird zweckmässig durch ein ebenfalls auf die Badoberfläche gerichtetes Rohr 6 vorgenommen. Die Anordnung einer Linse 7 am Behälter 4 hat den Vorteil, dass die Schmelze indirekt beobachtet werden kann, was für die Bedienung wesentlich praktischer und ungefährlicher ist. Anstatt einer Linse können auch andere optische Hilfsmittel, wie z. B. Hohlspiegel u. dgl., angeordnet werden, welche eine indirekte Beobachtung der Schmelze ermöglichen.

   Nach Beendigung der Reaktion wird die Vakuumpumpe abgestellt und nach Herstellung des Druckausgleiches der linke Teil des Gefässes 4 abgenommen, worauf die Schmelze durch Neigen des Behälters 1 ausgègossen werden kann. 



   PATENT-ANSPRÜCHE :
1. Verfahren zum Entkohlen von kohlenstoffhaltigen Metallen oder Legierungen mit Hilfe von reinem oder hochprozentigem Sauerstoff, dadurch gekennzeichnet, dass man die Gase unter ständig aufrechterhaltenem Unterdruck auf die Schmelze einwirken lässt.



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  Method and device for decarburizing metals or alloys containing carbon.
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 without causing any further damage in the trough 11 of the container 4. The cooling of the device in the company is expediently effected by irrigation of the vessel 4 from the outside. The inflow of
Gases or air for the purpose of a faster increase in pressure is expediently carried out through a tube 6 which is also directed towards the bath surface. The arrangement of a lens 7 on the container 4 has the advantage that the melt can be observed indirectly, which is much more practical and safe for operation. Instead of a lens, other optical aids, such as. B. concave mirror u. Like., Are arranged, which allow indirect observation of the melt.

   When the reaction is complete, the vacuum pump is switched off and, after the pressure equalization has been established, the left part of the vessel 4 is removed, whereupon the melt can be poured out by tilting the container 1.



   PATENT CLAIMS:
1. A method for decarburizing carbon-containing metals or alloys with the aid of pure or high percentage oxygen, characterized in that the gases are allowed to act on the melt under continuously maintained negative pressure.

Claims

2. Embodiment of the method according to claim 1, characterized in that when the melt rises too much, the pressure in the converter is increased by introducing gas or air into the boiling chamber, expediently in the hottest part of the same.

3. Process according to Claims 1 and 2, characterized in that the pressure is gradually reduced during the decarburization.

4. Device for carrying out the method according to claims 1 to 3, characterized in that a vessel (1) provided with a lateral opening (3), suitably made of metal and lined with a heat-resistant protective layer on the inside, which tubes (6 and 6) for introducing gases into the melting space, is arranged at some distance from the wall of a gas-tight closable container (4).

5. Apparatus according to claim 4, characterized in that the container (4) can be dismantled near the center of the vessel (1).

6. Device according to claims 4 and 5, characterized in that the container (4) below the lateral opening (3) of the melting vessel (1) is lined with heat-resistant material (11) which is expediently designed trough-shaped.

7. Device according to claims 4 to 6, characterized in that the vessel wall (1) is gas-permeable.

8. Device according to claims 4 to 7, characterized in that opposite the open side (3) of the melting vessel (1) in the vacuum container a lens (7) is arranged which projects the surface of the melt onto a screen (8). EMI2.1