AT18417B - Process of surface carbonization of iron and steel using carbides. - Google Patents
Process of surface carbonization of iron and steel using carbides.Info
- 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
- Authority
- AT
- Austria
- Prior art keywords
- carbides
- iron
- steel
- surface carbonization
- carbonization
- Prior art date
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims description 22
- 150000001247 metal acetylides Chemical class 0.000 title claims description 12
- 229910052742 iron Inorganic materials 0.000 title claims description 11
- 229910000831 Steel Inorganic materials 0.000 title claims description 8
- 239000010959 steel Substances 0.000 title claims description 8
- 238000003763 carbonization Methods 0.000 title claims description 5
- 238000000034 method Methods 0.000 title claims description 5
- 239000000654 additive Substances 0.000 claims 1
- 238000000137 annealing Methods 0.000 claims 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- -1 B. silicon carbide Chemical class 0.000 description 1
- 229910004809 Na2 SO4 Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Carbon And Carbon Compounds (AREA)
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.
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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
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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 :
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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
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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
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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:
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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
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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)
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) |
-
1903
- 1903-11-30 AT AT18417D patent/AT18417B/en active
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