AT131582B - Process for hardening iron, steel and cast iron alloys by nitriding. - Google Patents
Process for hardening iron, steel and cast iron alloys by nitriding.Info
- Publication number
- AT131582B AT131582B AT131582DA AT131582B AT 131582 B AT131582 B AT 131582B AT 131582D A AT131582D A AT 131582DA AT 131582 B AT131582 B AT 131582B
- Authority
- AT
- Austria
- Prior art keywords
- nitriding
- steel
- hardening
- iron
- cast iron
- Prior art date
Links
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- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Description
<Desc/Clms Page number 1>
Verfahren zum Ilärten von Eisen-, Stahl- und Gusseisenlegierungen durch Nitrieren.
Den Gegenstand der Erfindung bildet ein Verfahren zum Härten von Eisen-, Stahl-und Gusseisenlegierungen durch Nitrieren in Gegenwart von Halogenen. Es hat sich gezeigt. dass bei der nitrierhärtung eine Steigerung der Härte und der Härtetiefe erreicht werden kann, wenn man die Nitrierung in Gegenwart von Halogenen oder deren Verbindungen durchführt.
Schon bei Anwesenheit geringer Mengen von Halogenen in elementarer oder gebundener Form macht sich die Steigerung der Wirksamkeit des Nitriermittels bemerkbar.
In der Zeichnung sind die Härtekurven einer nach dem bisher üblichen Verfahren und einer nach dem vorliegenden Verfahren durchgeführten Härtung eines vergüteten Stahles mit 0#3% C. 0#2% Si, 0#3% Mn, 1#5% Cr und 1, 2%, Al dargestellt. Die Kurve A zeigt den Verlauf der Härte des in der bisher üblichen Weise bei 500 C während 48 Stunden im Ammoniak-
EMI1.1
und dann ebenfalls 48 Stunden bei 500 C im Ammoniakstrom nitriert. so ergibt sich der durch die Kurve D dargestellte Verlauf der Härte in der Nitriersehichte.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Process for hardening iron, steel and cast iron alloys by nitriding.
The subject matter of the invention is a process for hardening iron, steel and cast iron alloys by nitriding in the presence of halogens. It has shown. that in nitriding an increase in hardness and the hardness depth can be achieved if the nitriding is carried out in the presence of halogens or their compounds
Even in the presence of small amounts of halogens in elemental or bound form, the increase in the effectiveness of the nitrating agent becomes noticeable.
The drawing shows the hardness curves of a hardening of a tempered steel with 0 # 3% C. 0 # 2% Si, 0 # 3% Mn, 1 # 5% Cr and 1, 2%, Al shown. Curve A shows the course of the hardness of the in the usual way at 500 C for 48 hours in the ammonia
EMI1.1
and then nitrated for 48 hours at 500 ° C. in a stream of ammonia. this results in the hardness curve in the nitrate layer shown by curve D.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE131582X | 1930-06-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT131582B true AT131582B (en) | 1933-01-25 |
Family
ID=5664120
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT131582D AT131582B (en) | 1930-06-02 | 1931-05-26 | Process for hardening iron, steel and cast iron alloys by nitriding. |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT131582B (en) |
-
1931
- 1931-05-26 AT AT131582D patent/AT131582B/en active
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