DE136783C - - Google Patents
Info
- Publication number
- DE136783C DE136783C DENDAT136783D DE136783DA DE136783C DE 136783 C DE136783 C DE 136783C DE NDAT136783 D DENDAT136783 D DE NDAT136783D DE 136783D A DE136783D A DE 136783DA DE 136783 C DE136783 C DE 136783C
- Authority
- DE
- Germany
- Prior art keywords
- pipe
- mandrel
- outer diameter
- diameter
- same
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 claims 1
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007906 compression Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/16—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes
- B21C1/22—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles
- B21C1/24—Metal drawing by machines or apparatus in which the drawing action is effected by other means than drums, e.g. by a longitudinally-moved carriage pulling or pushing the work or stock for making metal sheets, bars, or tubes specially adapted for making tubular articles by means of mandrels
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Extraction Processes (AREA)
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
KLASSE 7h. CLASS 7h.
Der Gegenstand vorliegender Erfindung ist ein Verfahren, um nahtlose Rohre in erhitztem Zustande herzustellen.The subject of the present invention is a method of making seamless pipes in heated To establish conditions.
Auf'der Zeichnung sind, ohne auf die zur Herstellung der Rohre nöthigen Einrichtungen .oder Maschinen Rücksicht.zu nehmen, zwei Phasen der Herstellung' schematisch dargestellt, und" zwar sind die. beiden Phasen unmittelbar auf einander folgend gedacht.On the drawing are, without referring to the Manufacture of the pipes, equipment. Or machines to be considered, two The phases of production are shown schematically, namely the two phases are immediate consecutive thought.
Das Verfahren besteht, in Folgendem: ' .The procedure consists of the following: '.
Zunächst wird ein massiver Stab a in seiner ganzen Länge mit einer centrischen Bohrung versehen, worauf das eine Ende durch Pressung bezw.-Aufwertung mit "einer Krempe b ausgestattet wird, welchfe als Stütze bei der weiteren Bearbeitung dient. Das so vorgearbeitete Rohr wird warm gemacht und durch einen Ring c, der in einem Halter d befestigt ist, gesteckt, wobei sich die Krempe gegen den Ring legt. Gleichzeitig wird ein, Zieheisen, bestehend aus einem Ring e mit einem Halter f,: über das Rohr α und ein mit einem Konus versehener Dorn g von der Krempe her in die Bohrung gesteckt und gleichzeitig mit dem Zieheisen und in demselben Mafse .'in der'Pfeilrichtung fortbewegt. Der Durchmesser des Dorns ist gröfser als die ursprüngliche Bohrung des Rohres, während die lichte Weite' des Zieheisens um wenig gröfser ist als der äufsere Durchmesser des Rohres, so ■ dafs es leicht über dasselbe gesteckt werden kann. Bei der Bewegung in der Pfeilrichturig erweitert der Dorn das Rohr, drängt das Material gegen die innere Fläche des Zieheisens, so dafs eine Fortbewegung des. Materials in der Achsenrichtung eintritt, wodurch der lichte Durchmesser gröfser, die Wandstärke geringer und die Länge vergröfsert wird, während der -äufsere Durchmesser nahezu derselbe bleibt. Aufserdem tritt noch eine bedeutende Verdichtung ' des Materials ein. ;..''■'■■' First, a solid rod a is provided with a centric bore along its entire length, whereupon one end is equipped with a brim b by pressing or upgrading, which serves as a support during further processing. The pipe prepared in this way is warmed up and by a ring c which is fixed in a holder d, inserted, with the rim against the ring sets. at the same time, α is a drawing die consisting f of a ring e having a holder ,: over the pipe and with a The cone-shaped mandrel g is inserted from the brim into the bore and simultaneously with the drawing die and is moved in the same direction in the direction of the arrow. The diameter of the mandrel is larger than the original bore of the pipe, while the inside diameter of the drawing die is increased is a little larger than the outer diameter of the pipe, so that it can easily be pushed over it rial against the inner surface of the drawing iron, so that the material moves in the axial direction, whereby the inside diameter is larger, the wall thickness is reduced and the length is increased, while the outer diameter remains almost the same. In addition, there is a significant compression of the material. ; .. '' ■ '■■'
Das Verfahren wird mit anderen.Dornen so oft wiederholt, bis der gewünschte .Durchmesser des Rohres bezw. die gewünschte Wandstärke desselben erreicht ist.The procedure is with other thorns like that repeatedly until the desired .diameter of the pipe respectively. the desired wall thickness of the same is reached.
Claims (1)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE136783C true DE136783C (en) |
Family
ID=404720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT136783D Active DE136783C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE136783C (en) |
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0
- DE DENDAT136783D patent/DE136783C/de active Active
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