DE341461C - - Google Patents
Info
- Publication number
- DE341461C DE341461C DENDAT341461D DE341461DA DE341461C DE 341461 C DE341461 C DE 341461C DE NDAT341461 D DENDAT341461 D DE NDAT341461D DE 341461D A DE341461D A DE 341461DA DE 341461 C DE341461 C DE 341461C
- Authority
- DE
- Germany
- Prior art keywords
- hardening
- steel
- iron
- treated
- bath
- 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.)
- Active
Links
- 239000003795 chemical substances by application Substances 0.000 claims description 6
- 239000003610 charcoal Substances 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 13
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 229910052742 iron Inorganic materials 0.000 description 6
- 239000000843 powder Substances 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- DJCVNLGYSGMROR-UHFFFAOYSA-M [Fe]F Chemical compound [Fe]F DJCVNLGYSGMROR-UHFFFAOYSA-M 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 229910001296 Malleable iron Inorganic materials 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000001771 impaired Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel 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)
- Chemically Coating (AREA)
Description
Einsatzhärtemittel und Härtebad zur Veredelung von Eisen und Stahl. Die Erfindung betrifft ein neues Härtemittel für das Einsatzhärten zur Veredelung von Eisen und Stahl, das sich gegenüber den zu diesem Zweck gebräuchlichen Eidsatzhärtemitteln unter anderem dadurch auszeichnet, daß es wesentlich kürzere Zeit erfordert als diese, und daß es die Form der zu behandelnden Gegenstände nicht verändert oder beeinträchtigt. Man kann also z. B. aus weichem Flußeisen hergestellte und genau bearbeitete Zahnräder vergüten und härten, ohne daß nachträgliche Bearbeitung nötig würde. Ja, man kann sogar ohne bespndere Nachbehandlung solche Gegenstände unmittelbar aus dem Härtebad mit glatter, mattweißer Oberfläche erhalten, so daß sie nach einfachem Trocknen ohne weiteres vernickelt werden können.Case hardening agent and hardening bath for refining iron and steel. The invention relates to a new hardening agent for case hardening for finishing of iron and steel, which is opposed to the oath hardening agents used for this purpose Among other things, it is characterized by the fact that it takes a much shorter time than these, and that it does not change the shape of the objects to be treated or impaired. So you can z. B. made of soft fluoro iron and accurate Treat and harden machined gears without the need for subsequent machining would. Yes, you can even use such objects directly without any subsequent treatment obtained from the hardening bath with a smooth, matt white surface, so that they are after simple Drying can be easily nickel-plated.
Das neue Härtemittel eignet sich vorzugsweise für die Behandlung von Eisen und minderwertigem Stahl. Schmiedbares Eisen wird dadurch in Stahl umgewandelt, der auch nach wiederholtem Erhitzen und Schmieden seine Härte nicht mehr verliert, während minderwertiger Stahl von grobkörnigem Bruch nach der Behandlung einen dem Edelstahl gleichen Bruch und große Festigkeit zeigt.The new hardener is preferably suitable for the treatment of Iron and inferior steel. This transforms malleable iron into steel, which does not lose its hardness even after repeated heating and forging, while inferior steel of coarse-grained fracture after treatment one dem Stainless steel shows the same fracture and great strength.
Das Härtemittel besteht aus einem Gemisch von K, Fe (CN)" K2 Cr 0, (oder K2 Cr, 07), K4 Fe (CN)E und pulverisierter Holzkohle, mit dem der Stahl oder das Eisen o. dgl. wie auch sonst beim Härten in rotwarmem Zustand behandelt wird.The hardening agent consists of a mixture of K, Fe (CN), K2 Cr 0, (or K2 Cr, 07), K4 Fe (CN) E and pulverized charcoal, with which the steel or iron or the like when hardening is treated in a red-hot state.
Das Härten kann dann in irgendwelcher Weise vorgenommen werden. Besonders zweckmäßig ist ein Abschrecken der Gegenstände in einem Bad, das aus einer wässerigen Lösung von Na C1 und N H4 Cl besteht, wobei N H4 C1 ganz oder teilweise diurch NaOH ersetzt werden kann. Für das Einsatzpulver ist folgende Zusammensetzung besonders empfehlenswert: i Gewichtsteil K,Fe(CN)E, i GewichtsteilK2Cr0¢ oder KZ Cr, 07, 2 Gewichtsteile K¢ Fe (CN)" 2o bis 25 Gewichtsteile Holzkohle.Hardening can then be done in any way. Particularly It is expedient to quench the objects in a bath that consists of an aqueous one Solution of Na C1 and N H4 Cl, with N H4 C1 being wholly or partly di by NaOH can be replaced. The following composition is special for the feed powder Recommended: i part by weight K, Fe (CN) E, i part by weight K2Cr0 ¢ or KZ Cr, 07, 2 Parts by weight of K [Fe (CN) "2o to 25 parts by weight of charcoal.
Kleinere Eisenteile werden in der üblichen Weise kalt in dieses Pulver eingesetzt, größere Gegenstände dagegen zweckmäßig vor dem Einsetzen so weit vorgewärmt, daß einer vorzeitigen Zersetzung des Einsatzpulvers, bevor das zu behandelnde Stück die Reaktionsfähigkeit erlangt hat, möglichst vorgebeugt ist.Smaller iron parts become cold in this powder in the usual way inserted, larger objects, on the other hand, are appropriately preheated before insertion that premature decomposition of the feed powder before the piece to be treated has achieved the ability to react, is prevented as much as possible.
Die Vorzüge des neuen Mittels sind daraus zu entnehmen, daß beispielsweise Flußeisen von 15 mm Durchmesser kalt eingesetzt schon nach einer q.- bis 5stündigen Behandlung durch und durch in Stahl umgewandelt ist. Bei nur 2stündiger Behandlung ist bei Flußeisen von 15 -mm Durchmesser schon eine Härtekruste von etwa 3 mm Dicke erreicht.The advantages of the new agent can be seen from the fact that, for example, fluoro iron with a diameter of 15 mm, when used cold, is converted through and through into steel after a quarter to five hour treatment. Mm diameter a hardness crust already achieved of about 3 mm thickness - in only 2 hours of treatment in mild steel 15 is.
Die behandelten Gegenstände bleiben, ohne sich zu werfen, frei von Rissen und behalten saubere und glatte Oberfläche.The treated objects remain free from without throwing themselves Cracks and keep the surface clean and smooth.
Anwendung des obengenannten Härtebades gibt ihnen ein mattweißes, nickelähnliches Aussehen.Applying the above hardening bath gives you a matt white, nickel-like appearance.
Claims (2)
Publications (1)
Publication Number | Publication Date |
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DE341461C true DE341461C (en) |
Family
ID=571745
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT341461D Active DE341461C (en) |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE341461C (en) |
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0
- DE DENDAT341461D patent/DE341461C/de active Active
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