AT32825B - Method and device for pulling pipes with a longitudinal joint. - Google Patents
Method and device for pulling pipes with a longitudinal joint.Info
- Publication number
- AT32825B AT32825B AT32825DA AT32825B AT 32825 B AT32825 B AT 32825B AT 32825D A AT32825D A AT 32825DA AT 32825 B AT32825 B AT 32825B
- Authority
- AT
- Austria
- Prior art keywords
- seam
- longitudinal joint
- pipe
- pulling pipes
- coating
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 210000001503 joint Anatomy 0.000 description 4
- 238000005452 bending Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Bending Of Plates, Rods, And Pipes (AREA)
- Metal Extraction Processes (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Description
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wobei man dafür Sorge trägt, dass die Enden 9 des Überzuges bei 10 scharfkantig abgebogen werden und innerhalb der Stossfuge des Rohres zu liegen kommen. Dadurch werden die Enden des Überzuges nicht nur nicht von aussen sichtbar, sondern durch das dichte Verschliessen derselben infolge der Federkraft des Rohres und infolge der auf den Überzug an der Stossfuge einwirkenden Presse wird dieselbe sozusagen glatt gestrichen (verschmiert), so dass die Naht überhaupt nicht mehr oder nur schwer sichtbar ist.
Die Herstellung des Rohres und die Anbringung des Überzuges an demselben kann jedoch auch getrennt erfolgen, indem man das fertige Rohr vor einem Zieheisen so viel öffnet, dass der Überzug sich beim Durchziehen einfalzen kann.
Wie in Fig. 9 dargestellt ist, muss bei Herstellwlg von prismatischen Rohren die Naht 11 nicht längs einer Kante herlaufen, sondern kann durch Anwendung einer durch Biegen des Bleches gewonnenen Decklasche 12 auf eine Seitenfläche derselben verlegt werden. Durch die Pressung im Zieheisen erhalten die sich überdeckenden Teile die dargestellte Form, die jedoch auch schon vorher durch Fräsen oder Hobeln gebildet werden kann.
PATENT-ANSPRÜCHE : 1. Verfahren zum Ziehen von Rohren mit Längsstossfuge, dadurch gekennzeichnet, dass auf den Streifen an oder nahe der engsten Stelle des Zieheisens, na. mlif'h noch im Wirkungsbereiche des vom Zieheisen auf das Rohr von aussen nach innen gerichteten Druckes mittels eines Dornes ein von innen nach aussen gerichteter Druck ausgeübt wird, welcher infolge seiner dehnenden Wirkung auf die Innenfasern eine derartige Elastizität im Rohre erzeugt, dass dasselbe aus eigener Federkraft, seine Stossfuge geschlossen hält.
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taking care that the ends 9 of the coating are bent sharply at 10 and come to lie within the butt joint of the pipe. As a result, the ends of the coating are not only not visible from the outside, but by sealing them tightly as a result of the spring force of the pipe and as a result of the press acting on the coating at the butt joint, the same is smoothed out (smeared), so to speak, so that the seam is not at all is more or only difficult to see.
The manufacture of the pipe and the application of the coating to the same can, however, also be carried out separately by opening the finished pipe in front of a drawing die so much that the coating can fold in when it is pulled through.
As shown in FIG. 9, when prismatic tubes are manufactured, the seam 11 does not have to run along an edge, but can be laid on a side surface of the same by using a cover flap 12 obtained by bending the sheet metal. The pressing in the drawing die gives the overlapping parts the shape shown, which can, however, also be formed beforehand by milling or planing.
PATENT CLAIMS: 1. Method for drawing pipes with a longitudinal butt joint, characterized in that on the strip at or near the narrowest point of the drawing iron, n.mlif'h still in the effective range of the pressure directed from the outside to the inside by the drawing iron on the pipe by means of a mandrel a pressure directed from the inside to the outside is exerted, which due to its stretching effect on the inner fibers creates such elasticity in the pipe that the pipe keeps its butt joint closed by its own spring force.
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT32825T | 1906-07-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AT32825B true AT32825B (en) | 1908-05-11 |
Family
ID=3548158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT32825D AT32825B (en) | 1906-07-15 | 1906-07-15 | Method and device for pulling pipes with a longitudinal joint. |
Country Status (1)
| Country | Link |
|---|---|
| AT (1) | AT32825B (en) |
-
1906
- 1906-07-15 AT AT32825D patent/AT32825B/en active
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