AT135491B - Hardening agent for case hardening workpieces and tools made of iron or steel. - Google Patents
Hardening agent for case hardening workpieces and tools made of iron or steel.Info
- Publication number
- AT135491B AT135491B AT135491DA AT135491B AT 135491 B AT135491 B AT 135491B AT 135491D A AT135491D A AT 135491DA AT 135491 B AT135491 B AT 135491B
- Authority
- AT
- Austria
- Prior art keywords
- hardening
- steel
- iron
- workpieces
- tools made
- Prior art date
Links
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Description
<Desc/Clms Page number 1>
Härtemittel zum Einsatzhärten von Werkstücken und Werkzeugen aus Eisen oder Stahl.
Die gute Wirkung von Kieselsäure, die man sowohl in reinem Zustande wie auch in Gestalt von Glaspulver den Härtemitteln zusetzt, ist bekannt. Die Gewinnung reiner Kieselsäure wie auch das Pulverisieren von Glas ist seiner Umständlichkeit wegen zeitraubend und teuer. Deshalb wird gemäss der vorliegenden Erfindung den bekannten trockenen Zementierungsmischungen vor dem Einpacken der Werkstücke Tonsehiefermehl im Verhältnis von etwa 25 % ihrer Gesamtgewiehtsmenge zugesetzt, welches einen hohen Prozentsatz von Kieselsäure enthält und in seiner Beschaffung wohlfeil ist.
Dieser Zusatz von Tonschiefer übt den bei dem Zusatz von reiner Kieselsäure bekannten Einfluss aus, dass nämlich die Zähigkeit des Eisens oder Stahles in seinen äusseren Schichten bis zu einer gewissen Tiefe, die sich nach der Länge der Härtungsdauer richtet, erheblieh gesteigert wird. Diese Zähigkeit passt sich dem inneren weichbleibenden Kern des Werkstückes in einem solehen Masse an, dass nach abgeschlossener Härtung die Werkstücke verbogen werden können, ohne zu brechen. Diese Eigenschaft gestattet die Verwendung von Eisen oder Stahl geringerer Wertsorten für die Herstellung von Werkstücken. namentlich von Werkzeugen, für die bisher nur edlere Stahlsorten verwendet wurden.
Hiedurch werden die Herstellungskosten solcher Werkstücke und Werkzeuge wesentlich vermindert.
**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.
<Desc / Clms Page number 1>
Hardening agent for case hardening workpieces and tools made of iron or steel.
The good effect of silica, which is added to the hardening agents both in the pure state and in the form of glass powder, is known. Obtaining pure silica, as well as pulverizing glass, is time-consuming and expensive because of its inconvenience. Therefore, according to the present invention, before packing the workpieces, clay slab meal is added to the known dry cementing mixes in the proportion of about 25% of their total weight, which contains a high percentage of silicic acid and is cheap to obtain.
This addition of slate has the effect known from the addition of pure silica, namely that the toughness of the iron or steel in its outer layers is considerably increased up to a certain depth, which depends on the length of the hardening time. This toughness adapts to the inner core of the workpiece, which remains soft, to such an extent that, after hardening is complete, the workpiece can be bent without breaking. This property allows the use of iron or steel of lesser value for the manufacture of workpieces. namely of tools for which only finer types of steel have been used until now.
This significantly reduces the manufacturing costs of such workpieces and tools.
** WARNING ** End of DESC field may overlap beginning of CLMS **.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE135491T | 1931-07-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT135491B true AT135491B (en) | 1933-11-25 |
Family
ID=29277863
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT135491D AT135491B (en) | 1931-07-27 | 1932-07-11 | Hardening agent for case hardening workpieces and tools made of iron or steel. |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT135491B (en) |
-
1932
- 1932-07-11 AT AT135491D patent/AT135491B/en active
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