DE151715C - - Google Patents
Info
- Publication number
- DE151715C DE151715C DE1902151715D DE151715DA DE151715C DE 151715 C DE151715 C DE 151715C DE 1902151715 D DE1902151715 D DE 1902151715D DE 151715D A DE151715D A DE 151715DA DE 151715 C DE151715 C DE 151715C
- Authority
- DE
- Germany
- Prior art keywords
- iron
- carbides
- steel
- heat
- procedure
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 24
- 229910052742 iron Inorganic materials 0.000 claims description 12
- 150000001247 metal acetylides Chemical class 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000003763 carbonization Methods 0.000 claims description 4
- 239000000654 additive Substances 0.000 claims description 3
- 238000000137 annealing Methods 0.000 claims 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N Silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910010271 silicon carbide Inorganic materials 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L na2so4 Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- -1 not with liquid Chemical compound 0.000 description 1
- 239000011734 sodium 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/60—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using solids, e.g. powders, pastes
- C23C8/62—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using solids, e.g. powders, pastes only one element being applied
- C23C8/64—Carburising
- C23C8/66—Carburising of ferrous surfaces
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Carbon And Carbon Compounds (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT,PATENT OFFICE,
Bisher wurden bei der Oberflächenkohlung des Eisens und Stahls vermittels Carbiden diese dem Eisen und Stahl allein zugesetzt, wobei vorausgesetzt wurde, daß sie durch die Wirkung der Hitze oder vermittels des elektrischen Stromes zersetzt werden. Bei diesen Verfahren war man in der Auswahl der Carbide beschränkt, da nur solche Verwendung finden konnten, deren ZersetzungSo far, the surface carbonization of iron and steel by means of carbides these were added to the iron and steel alone, provided that they were through decomposed by the action of heat or by means of an electric current. at In this process one was limited in the choice of carbides, since only such use could find their decomposition
ίο in der Hitze oder durch Elektrizität möglich war. Hierbei war die Verwendung einer Reihe von sehr wertvollen Carbiden, ζ. Β. des Siliciumcarbides, ausgeschlossen, welche entweder durch Hitze oder Elektrizität überhaupt nicht zersetzt werden oder zu ihrer Zersetzung so hohe Hitzegrade erfordern, daß das zu behandelnde Eisen oder Stahl hierbei verbrennen würde.ίο possible in the heat or by electricity was. This involved the use of a number of very valuable carbides, ζ. Β. of silicon carbide, excluding which either by heat or by electricity in general are not decomposed or require such high degrees of heat for their decomposition that the iron or steel to be treated would burn in the process.
Diese Nachteile werden gemäß vorliegenderThese disadvantages become more apparent as we see them
ao Erfindung dadurch beseitigt, daß die Carbide nicht allein, sondern mit solchen Zuschlägen zur Anwendung kommen, welche die Carbide zersetzen. Dieses Verfahren hat außerdem noch den Vorteil, daß die Reaktion zwischen dem Kohlenstoff und dem Eisen, also die Kohlung des Eisens, schneller vor sich geht.ao invention eliminated by the fact that the carbides not alone, but with such additives come into use, which decompose the carbides. This procedure also has nor the advantage that the reaction between the carbon and the iron, i.e. the Carbonization of the iron, going faster.
Beispiel: Siliciumcarbid (SiC) wird mitExample: silicon carbide (SiC) is used with
Natriumsulfat (Na2SO4J gemischt und das Gemisch auf noch kaltes Eisen oder Stahl aufgebracht und dann mit diesem geglüht; oder die vorher glühend gemachten Eisenoder Stahlstücke werden mit dem Gemisch bedeckt.Sodium sulfate (Na 2 SO 4 J mixed and the mixture applied to iron or steel while it is still cold and then annealed with this; or the iron or steel pieces that have previously been made red-hot are covered with the mixture.
Es ist bekannt geworden, Kohle allein in Gegenwart eines Metalloxydes zur Kohlung von Eisen zu benutzen. Von diesem Verfahren unterscheidet sich das vorliegende dadurch, daß an Stelle der Kohle Carbide benutzt werden, und zwar in Gegenwart von Zuschlägen, welche die Carbide zersetzen.It has become known to use coal alone in the presence of a metal oxide for carbonization of iron to use. The present procedure differs from this procedure in that that carbides are used in place of the coal, in the presence of additives which decompose the carbides.
Es ist ferner bekannt geworden, Carbide mit zersetzend wirkenden Stoffen dem flüssigen Eisen zuzusetzen, zwecks Rückkohlung von Flußeisen. Von diesem Verfahren unterscheidet sich das vorliegende dadurch, daß das Carbid mit seinenZuschlägen mit festem Eisen oder Stahl, also nicht mit flüssigem, zusammengebracht wird.It has also become known to replace the liquid carbides with decomposing substances Adding iron for the purpose of recarburizing fluent iron. Different from this procedure the present is characterized by the fact that the carbide with its aggregates with solid iron or steel, i.e. not with liquid, is brought together.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT18417D AT18417B (en) | 1902-11-12 | 1903-11-30 | Process of surface carbonization of iron and steel using carbides. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE151715C true DE151715C (en) |
Family
ID=418517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE1902151715D Expired - Lifetime DE151715C (en) | 1902-11-12 | 1902-11-12 |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE151715C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1117263B (en) * | 1953-12-18 | 1961-11-16 | Sulzer Ag | Process for preventing the edge decarburization of castings made of carbon-containing alloys |
-
1902
- 1902-11-12 DE DE1902151715D patent/DE151715C/de not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1117263B (en) * | 1953-12-18 | 1961-11-16 | Sulzer Ag | Process for preventing the edge decarburization of castings made of carbon-containing alloys |
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