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
Application number
Other languages
German (de)
Inventor
August Garweg
Original Assignee
August Garweg
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by August Garweg filed Critical August Garweg
Application granted granted Critical
Publication of AT135491B publication Critical patent/AT135491B/en

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  • 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)

PATENT-ANSPRUCH : Härtemittel zum Einsatzhärten von Werkstücken und Werkzeugen aus Eisen oder Stahl, dadurch gekennzeichnet, dass es aus bekannten Einsatzmischungen fester Form mit einem Zusatz von Tonschiefermehl von etwa 25% der Gesamtgewichtsmenge der ersteren besteht. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Hardening agent for case hardening workpieces and tools made of iron or steel, characterized in that it consists of known solid-form insert mixtures with an addition of slate powder of about 25% of the total weight of the former. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT135491D 1931-07-27 1932-07-11 Hardening agent for case hardening workpieces and tools made of iron or steel. AT135491B (en)

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)

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