AT63307B - Method for cementing objects made of iron, steel or steel alloys by means of a gas and granular coal. - Google Patents
Method for cementing objects made of iron, steel or steel alloys by means of a gas and granular coal.Info
- Publication number
- AT63307B AT63307B AT63307DA AT63307B AT 63307 B AT63307 B AT 63307B AT 63307D A AT63307D A AT 63307DA AT 63307 B AT63307 B AT 63307B
- Authority
- AT
- Austria
- Prior art keywords
- steel
- cementing
- granular coal
- gas
- iron
- Prior art date
Links
- 239000003245 coal Substances 0.000 title claims description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims description 6
- 229910000831 Steel Inorganic materials 0.000 title claims description 5
- 239000010959 steel Substances 0.000 title claims description 5
- 238000000034 method Methods 0.000 title claims description 4
- 229910000851 Alloy steel Inorganic materials 0.000 title claims description 3
- 229910052742 iron Inorganic materials 0.000 title claims description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 239000007789 gas Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Description
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Verfahren zum Zementieren von Gegenständen aus Eisen, Stahl oder Stahllegierungen mittels eines Gases und körniger Kohle.
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Bodenverschluss der Zementierungskammer. Die körnige Kohle gleitet dann aus der Kammer leicht heraus und wird in einem Behälter gesammelt, um darauf in bekannter Weise in einer anderen Zemontierungskammer weitere Verwendung zu finden.
In vielen Fällen (und gerade dann, wenn man sehr tiefe zementierte Zonen erhalten will, ohne dass die Konzentration des Kolilenstoffgehaltes beträchtliche Werte erreicht) entleert man, ebenso wie bei dem Verfahren nach der französischen Patentschrift Nr. 415985, zweckmässig die Zementiernngskammer nicht vollständig von der körnigen Kohle, sondern nur bis zur notwendigen Menge, um die Oberfläche der zu zementierenden Stücke freizulegen, und setzt das Erhitzen und Zirkulierenlassen des Luftstromes in Gegenwart der noch vorhandenen Kohle fort.
Die aus der Zementierungskammer entweichenden Gase können in bekannter Weise in einem Behälter für weitere Zementierungsarbeiten aufgefangen werden Man vermeidet so, eine kleine Menge körniger Kohle zu verbrennen, was selbstverständlich eintritt wenn man die Luft unvermittelt anwendet. Derselbe Zweck kann erreicht werden, wenn man im Anfang die Luft durch Holzkohle, die auf 1000 bis 11000 C in einem besonderen Ofen erhitzt worden ist, vor ihrem Eintritt in die Zementierungskammer streichen lässt.
Wenn man in der zementierten Zone einen höheren Gehalt an Kohlenstoff haben will, braucht man nur in bekannter Weise mehr oder minder grosse Mengen fassiger oder gas- förmiger Kohlenwasserstoffe in die Gegend der Zementiernngskammer einzuleiten, wo die
Luft bereits eine Schicht körniger Kohle von mindestens 10 cm Dicke durchstrichen hat.
Falls man eine sehr grosse Gleichmässigkeit der zementierten Zone auf der ganzen
Oberfläche der Stahlgegenstände erreichen will, braucht man nur die Zementierungskammer während der Operation langsam zu drehen, oder besser, man kann die Stahlgegenstände, die alle in körniger Kohle eingebettet liegen, an einer drehbaren Welle, weiche durch die dichte Wand der Zementierungskammer hindurchgeht, befestigen.
<Desc / Clms Page number 1>
Method for cementing objects made of iron, steel or steel alloys by means of a gas and granular coal.
EMI1.1
<Desc / Clms Page number 2>
EMI2.1
Bottom closure of the cementation chamber. The granular coal then easily slides out of the chamber and is collected in a container in order to then find further use in a known manner in another demounting chamber.
In many cases (and especially when you want to obtain very deep cemented zones without the concentration of the colilant content reaching considerable values), as with the method according to French patent specification No. 415985, it is advisable not to empty the cementing chamber completely from the granular coal, but only to the extent necessary to expose the surface of the pieces to be cemented, and continues heating and circulating the air flow in the presence of the remaining coal.
The gases escaping from the cementing chamber can be collected in a known manner in a container for further cementing work. This avoids burning a small amount of granular coal, which of course occurs when the air is used suddenly. The same purpose can be achieved by initially passing the air through charcoal heated to 1000 to 11000 C in a special oven before it enters the cementing chamber.
If one wants to have a higher content of carbon in the cemented zone, one only needs to introduce more or less large amounts of solid or gaseous hydrocarbons into the area of the cementing chamber, where the
Air has already passed through a layer of granular coal at least 10 cm thick.
If you have a very great evenness of the cemented area on the whole
To reach the surface of the steel objects, one only needs to rotate the cementing chamber slowly during the operation, or rather, one can attach the steel objects, which are all embedded in granular coal, to a rotatable shaft that passes through the sealed wall of the cementing chamber.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT63307X | 1910-10-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT63307B true AT63307B (en) | 1914-02-10 |
Family
ID=11121008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT63307D AT63307B (en) | 1910-10-17 | 1911-10-05 | Method for cementing objects made of iron, steel or steel alloys by means of a gas and granular coal. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT63307B (en) |
-
1911
- 1911-10-05 AT AT63307D patent/AT63307B/en active
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