AT131411B - Manufacture of hollow metal bars, rods and the like like - Google Patents

Manufacture of hollow metal bars, rods and the like like

Info

Publication number
AT131411B
AT131411B AT131411DA AT131411B AT 131411 B AT131411 B AT 131411B AT 131411D A AT131411D A AT 131411DA AT 131411 B AT131411 B AT 131411B
Authority
AT
Austria
Prior art keywords
rods
hollow metal
manufacture
core
metal bars
Prior art date
Application number
Other languages
German (de)
Inventor
Robert Abbott Hadfield
Original Assignee
Robert Abbott Hadfield
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 Robert Abbott Hadfield filed Critical Robert Abbott Hadfield
Application granted granted Critical
Publication of AT131411B publication Critical patent/AT131411B/en

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Landscapes

  • Metal Rolling (AREA)

Description

  

   <Desc/Clms Page number 1> 
 
 EMI1.1 
 



   Die Erfindung'betrifft die Herstellung von hohlen Metallstange, -stäben u. dgl. (im nachfolgenden allgemein als hohle   Metallstauben   bezeichnet), besonders für Bohrer. 
 EMI1.2 
 aus der Stange herausgezogen wird. 



   Es wurde vorgeschlagen, als Kern einen Stab aus einem Metall von geringer Elastizität, jedoch von entsprechender Zugfestigkeit zu verwenden, damit der Kern von der hohlen Metallstange, die durch Walzen oder Schmieden aus der Metallplatine, - barren oder -block erzeugt wurde, herausgezogen werden kann. Demgemäss wurde vorgeschlagen, als Kern eine   Kupferstange   zu verwenden, die. nachdem die 
 EMI1.3 
 wird. nachdem vorerst die Enden der Stange aufgesbrochen wurden, damit das Ende der Stange erfasst und herausgezogen werden kann. In der Praxis hat sieh ergeben, dass die Kupferstange während des 
 EMI1.4 
 gedehnt wird. so lange, bis sein   Durchmesser   genügend verkleinert ist und der Kern als Ganzes aus der fertigen Stange herausgezogen werden kann. 



   Die vorliegende Erfindung bezweckt die Herstellung der nach der vorstehend   beschriebenen   
 EMI1.5 
 Ergebnisse zu erzielen gestattet. 



     Gemäss   der Erfindung wird zur Herstellung von hohlen Metallstangen der beschriebenen. \rt ein Kern aus Manganstahl von der beschriebenen Beschaffenheit verwendet.   Gemäss   der Erfindung wird eine   Metallplatine mit   einem   Längsloch   versehen und dieses Loch mit einer Stange oder einem Kern aus gewalztem oder nicht zähgemachtem Manganstahl ausgefüllt und die Platine mit diesem Kern dann auf die oben angegebene hohe Temperatur erhitzt und in bekannter Weise bearbeitet. um sie auf die gewünschte 
 EMI1.6 
 und aufgebrochen und der Kern einem entsprechenden Zug unterworfen, z. B. mittels einer an beiden   Enden   des Kernes angreifenden und mit dem   Abziehmechanismus   verbundenen Greifvorrichtung, so 
 EMI1.7 
 

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 EMI1.1
 



   The invention concerns the production of hollow metal rods, rods and the like. Like. (hereinafter generally referred to as hollow metal dust), especially for drills.
 EMI1.2
 is pulled out of the rod.



   It has been proposed to use a rod made of a metal of low elasticity but of adequate tensile strength as the core so that the core can be pulled out of the hollow metal rod which has been produced by rolling or forging from the metal blank, ingot or block . Accordingly, it has been proposed to use a copper rod as the core, which. after the
 EMI1.3
 becomes. after the ends of the rod have been broken open so that the end of the rod can be grasped and pulled out. In practice it has been shown that the copper rod during the
 EMI1.4
 is stretched. until its diameter is sufficiently reduced and the core can be pulled out of the finished rod as a whole.



   The present invention aims at the manufacture of the one described above
 EMI1.5
 Allowed to achieve results.



     According to the invention, the method described is used for producing hollow metal rods. A manganese steel core of the type described is used. According to the invention, a metal plate is provided with a longitudinal hole and this hole is filled with a rod or a core made of rolled or non-toughened manganese steel and the plate with this core is then heated to the high temperature indicated above and processed in a known manner. to get them to the desired
 EMI1.6
 and broken open and the core subjected to a corresponding pull, e.g. B. by means of a gripping device which acts on both ends of the core and is connected to the removal mechanism, see above
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 EMI2.1


 
AT131411D 1927-07-07 1928-07-07 Manufacture of hollow metal bars, rods and the like like AT131411B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB131411X 1927-07-07

Publications (1)

Publication Number Publication Date
AT131411B true AT131411B (en) 1933-01-25

Family

ID=10017586

Family Applications (1)

Application Number Title Priority Date Filing Date
AT131411D AT131411B (en) 1927-07-07 1928-07-07 Manufacture of hollow metal bars, rods and the like like

Country Status (1)

Country Link
AT (1) AT131411B (en)

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