DE1109633B - Method for preparing the narrow surfaces of tape which is processed into a screw-seam pipe to be press-welded - Google Patents
Method for preparing the narrow surfaces of tape which is processed into a screw-seam pipe to be press-weldedInfo
- Publication number
- DE1109633B DE1109633B DEH33681A DEH0033681A DE1109633B DE 1109633 B DE1109633 B DE 1109633B DE H33681 A DEH33681 A DE H33681A DE H0033681 A DEH0033681 A DE H0033681A DE 1109633 B DE1109633 B DE 1109633B
- Authority
- DE
- Germany
- Prior art keywords
- tape
- narrow
- processed
- narrow surfaces
- welded
- 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.)
- Pending
Links
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
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/12—Making tubes or metal hoses with helically arranged seams
- B21C37/126—Supply, or operations combined with supply, of strip material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/08—Seam welding not restricted to one of the preceding subgroups
- B23K11/082—Seam welding not restricted to one of the preceding subgroups of three-dimensional seams
- B23K11/084—Seam welding not restricted to one of the preceding subgroups of three-dimensional seams of helicoïdal seams
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Basic Packing Technique (AREA)
Description
Verfahren zum Vorbereiten -der Schmalflächen von Band, das zu einem preßzuverschweißenden Schraubennahtrohr verarbeitet wird Es ist bekannt, beim Preßschweißen von Schraubennahtrohr Metallband zu verarbeiten, dessen Schmalflächen die Breitflächen unter einem von 90° verschiedenen Winkel schneiden, weil es - wenn man von Überlapptschweißungen absieht - nur mit solchem Band möglich ist, die zum Schweißen notwendige Pressung zwischen den einander gegenüberstehenden Schmalflächen durch radial wirkende Preßkräfte zu erzeugen. Derartiges Band wird auch beim Verfahren nach der Erfindung verarbeitet. Den Ausgang der Erfindung bildet daher ein Verfahren zum Vorbereiten, z. B. Besäumen, eines mit zu seinen Breitflächen geneigten Schmalflächen zu versehenden Bandes, das zu einem unter Anwendung eines radialen Stauchdrucks preßzuverschweißenden Schraubennahtrohr verarbeitet wird.Method for preparing the narrow surfaces of tape to be It is known in pressure welding to process metal tape from screw-seam pipe, the narrow surfaces of which are the broad surfaces Cut at an angle other than 90 °, because - when talking about lap welds disregards - only with such a tape is possible the pressure required for welding between the opposing narrow surfaces by radially acting compressive forces to create. Such tape is also processed in the method according to the invention. The output of the invention therefore forms a method for preparing, for. B. trimming, a strip to be provided with narrow surfaces inclined to its broad surfaces, that to a screw seam tube to be pressure welded using a radial upsetting pressure is processed.
Während man die geneigten Schmalflächen des Bandes bisher parallel zueinander gemacht hat, werden sie erfindungsgemäß zueinander geneigt abgeschrägt. Dadurch wird eine besonders gute Säuberung der Schweißnaht von Zunder und Oxyd erreicht, wie weiter unten näher erläutert werden wird.While the inclined narrow surfaces of the belt were previously parallel has made each other, they are beveled according to the invention inclined to each other. This achieves a particularly good cleaning of the weld seam from scale and oxide, as will be explained in more detail below.
In der bevorzugten Ausführung der Erfindung werden die Schmalflächen derart abgeschrägt, daß die spitzen Winkel, unter denen sie die Breitflächen schneiden, im Bereich von 45 bis 60° liegen; denn es hat sich herausgestellt, daß bei Einhaltung dieses Winkelbereiches die besten Ergebnisse erzielt werden.In the preferred embodiment of the invention, the narrow surfaces beveled in such a way that the acute angles at which they intersect the broad surfaces are in the range of 45 to 60 °; because it has been found that when adhered to this angular range the best results can be achieved.
Die Zeichnung veranschaulicht zwei Ausführungsbeispiele der Erfindung jeweils im Querschnitt durch zwei benachbarte Bandwindungen kurz vor dem Verschweißen: In Fig. 1 ist die linke Schmalfläche 1 des Bandes 2 um 45°, die rechte Schmalfläche 3 dagegen um 60° gegen die einander parallelen Breitflächen 4 geneigt. Die beiden gezeichneten Querschnitte stellen zwei benachbarte, noch nicht miteinander verschweißte Bandwindungen dar. Die Schmalfläche 3 der linken Windung soll also mit der Schmalfläche 1 der rechten Windung dadurch verschweißt werden, daß beide Flächen durch radialen Druck gegeneinandergepreßt werden. Dabei trifft die Kante 5 der Schmalfläche 3 auf die Schmalfläche 1 und befreit sie, indem sie an ihr entlanggleitet, von Zunder und Oxyd. Bei diesem Gleiten der Kante ist die wirksame Kontaktfläche zunächst so schmal, daß sie einer Linienberührung nahekommt. Daher wird das Material stark erhitzt und demzufolge verflüssigt oder mindestens teigigplastisch. Während die sich zur Fläche verbreiternde Kante an der gegenüberstehenden Fläche entlangführt, wird durch die Verbreiterung nun auch alles, was auf der Kantenseite in der an die Kante 5 angrenzenden Fläche 3 an Oxyd vorhanden ist, nach oben und unten fort und nach außen geschoben.The drawing illustrates two exemplary embodiments of the invention in each case in cross section through two adjacent tape windings shortly before welding: In Fig. 1, the left narrow surface 1 of the band 2 is 45 °, the right narrow surface 3, on the other hand, is inclined by 60 ° with respect to the parallel broad surfaces 4. The two The cross-sections drawn represent two adjacent, not yet welded together Band turns. The narrow surface 3 of the left turn should therefore coincide with the narrow surface 1 of the right turn are welded in that both surfaces by radial Pressure are pressed against each other. The edge 5 of the narrow surface 3 strikes the narrow surface 1 and frees it by sliding along it from scale and oxide. With this sliding of the edge, the effective contact surface is initially like this narrow so that it comes close to touching a line. Therefore the material is heated strongly and consequently liquefied or at least doughy-plastic. While the The edge widening the surface runs along the opposite surface, is carried out by the widening now also includes everything on the edge side in the 5 adjacent surface 3 of oxide is present, moving up and down and outwards pushed.
Die Ausführung nach Fig. 2 unterscheidet sich von derjenigen nach Fig. 1 lediglich dadurch, daß die linke Schmalfläche 1 um 60° und die rechte Schmalfläche 3 um 45° gegen die Breitflächen 4 geneigt ist. Infolgedessen übernimmt hier die Kante 6 der Schmalfläche 1 des rechten Querschnittes die Rolle der Kante 5 in Fig. 1.The embodiment according to FIG. 2 differs from that according to Fig. 1 only in that the left narrow surface 1 by 60 ° and the right narrow surface 3 is inclined by 45 ° against the broad surfaces 4. As a result, the Edge 6 of the narrow surface 1 of the right cross-section, the role of the edge 5 in Fig. 1.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEH33681A DE1109633B (en) | 1958-06-30 | 1958-06-30 | Method for preparing the narrow surfaces of tape which is processed into a screw-seam pipe to be press-welded |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEH33681A DE1109633B (en) | 1958-06-30 | 1958-06-30 | Method for preparing the narrow surfaces of tape which is processed into a screw-seam pipe to be press-welded |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1109633B true DE1109633B (en) | 1961-06-29 |
Family
ID=7152204
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEH33681A Pending DE1109633B (en) | 1958-06-30 | 1958-06-30 | Method for preparing the narrow surfaces of tape which is processed into a screw-seam pipe to be press-welded |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE1109633B (en) |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1511849A (en) * | 1922-01-21 | 1924-10-14 | Taylor James Hall | Method of welding tubing |
US1774000A (en) * | 1927-10-18 | 1930-08-26 | California Corrugated Culvert | Making spiral welded pipe |
DE527391C (en) * | 1928-02-08 | 1931-06-17 | California Corrugated Culvert | Process for the manufacture of pipes by helically winding a sheet metal strip |
US1875560A (en) * | 1930-11-17 | 1932-09-06 | Cammen Leon | Pipe making machinery |
US1878376A (en) * | 1931-02-04 | 1932-09-20 | Cammen Leon | Machinery for making welded pipe |
US1961224A (en) * | 1929-06-08 | 1934-06-05 | Jackson Tube Co Inc S | Machine for making welded tubing |
US2216606A (en) * | 1938-10-06 | 1940-10-01 | Taylor Edward Hall | Method of making spiral pipe |
GB643816A (en) * | 1948-04-15 | 1950-09-27 | Gen Electric Co Ltd | Improvements in or relating to the welding of seams in metallic tubing |
DE920485C (en) * | 1944-05-28 | 1954-11-22 | Fritz Dipl-Ing Stiehl | A method and apparatus for continuously making tubes by helically winding a strip of tape onto a rotating mandrel |
-
1958
- 1958-06-30 DE DEH33681A patent/DE1109633B/en active Pending
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1511849A (en) * | 1922-01-21 | 1924-10-14 | Taylor James Hall | Method of welding tubing |
US1774000A (en) * | 1927-10-18 | 1930-08-26 | California Corrugated Culvert | Making spiral welded pipe |
DE527391C (en) * | 1928-02-08 | 1931-06-17 | California Corrugated Culvert | Process for the manufacture of pipes by helically winding a sheet metal strip |
US1961224A (en) * | 1929-06-08 | 1934-06-05 | Jackson Tube Co Inc S | Machine for making welded tubing |
US1875560A (en) * | 1930-11-17 | 1932-09-06 | Cammen Leon | Pipe making machinery |
US1878376A (en) * | 1931-02-04 | 1932-09-20 | Cammen Leon | Machinery for making welded pipe |
US2216606A (en) * | 1938-10-06 | 1940-10-01 | Taylor Edward Hall | Method of making spiral pipe |
DE920485C (en) * | 1944-05-28 | 1954-11-22 | Fritz Dipl-Ing Stiehl | A method and apparatus for continuously making tubes by helically winding a strip of tape onto a rotating mandrel |
GB643816A (en) * | 1948-04-15 | 1950-09-27 | Gen Electric Co Ltd | Improvements in or relating to the welding of seams in metallic tubing |
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