AT131411B - Manufacture of hollow metal bars, rods and the like like - Google Patents
Manufacture of hollow metal bars, rods and the like likeInfo
- 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
Links
Landscapes
- Metal Rolling (AREA)
Description
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Die Erfindung'betrifft die Herstellung von hohlen Metallstange, -stäben u. dgl. (im nachfolgenden allgemein als hohle Metallstauben bezeichnet), besonders für Bohrer.
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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
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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
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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
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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
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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
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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.
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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
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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
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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
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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
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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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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) |
-
1928
- 1928-07-07 AT AT131411D patent/AT131411B/en active
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