DE677349C - Process for electrical resistance welding of the longitudinal edges of thick-walled hollow bodies - Google Patents
Process for electrical resistance welding of the longitudinal edges of thick-walled hollow bodiesInfo
- Publication number
- DE677349C DE677349C DEV28108D DEV0028108D DE677349C DE 677349 C DE677349 C DE 677349C DE V28108 D DEV28108 D DE V28108D DE V0028108 D DEV0028108 D DE V0028108D DE 677349 C DE677349 C DE 677349C
- Authority
- DE
- Germany
- Prior art keywords
- thick
- electrical resistance
- longitudinal edges
- hollow bodies
- resistance welding
- 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.)
- Expired
Links
Classifications
-
- 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)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
Die Erfindung bezieht sich auf ein Verfahren zum elektrischen Widerstandsschweißen der Längskanten dickwandiger Hohlkörper, wie beispielsweise Eesseltrommeln, die nach Patent 661 009 in der Weise geschweißt werden, daß die zu verschweißenden Kanten mit einer Überlappung aneinandergefügt werden, wobei die Überlappung in der Weise ausgebildet ist, daß eine Trennfuge entsteht, die in ihrem Hauptteil waagerecht oder mit geringer Schrägung ausgeführt ist und an den Enden senkrecht oder steil liegt; dabei wird der Überlappung vor der Verschweißung eine Stärke gegeben, die größer ist als diejenige des Bleches, aber wesentlich geringer als die doppelte Blechstärke.The invention relates to a method for electrical resistance welding the longitudinal edges of thick-walled hollow bodies, such as Eessel drums, which according to patent 661 009 are welded in such a way that the edges to be welded be joined together with an overlap, the overlap in the manner is designed that a parting line is formed, which is horizontal or with in its main part is designed with a slight slope and is perpendicular or steep at the ends; included the overlap is given a thickness before welding that is greater than that of the sheet, but much less than twice the sheet thickness.
Die Erfindung besteht nun darin, daß an Stelle: der in ihrem Hauptteil waagerecht oder mit geringer Schrägung liegenden Trennfuge der Überlappung eine Trennfuge vorgesehen wird, bei der die Überlappungen unterschnitten ineinandergreifen. Der Zweck der erfindungsgemäß vorgesehenen Unterschneidung der Schweißkante ist der, ein Auseinanderklappen der beiden Kanten des Rohrmaterials, wie es bei dem starken Druck der Elektrodenrollen auf die Schweißstelle vorkommen kann, zu verhindern.The invention now consists in that instead of: the horizontal in its main part or a parting line of the overlap is provided with a slightly inclined parting line in which the overlaps interlock undercut. The purpose the undercut of the welding edge provided according to the invention is a Unfold the two edges of the pipe material, as with the strong pressure the electrode rolls on the welding point can occur.
Es ist zwar eine Rohrverbindung bekannt, bei welcher ebenfalls hinters chnittene Flächen an der Trennfuge vorhanden sind, jedoch handelt es sich hierbei um eine Schrumpfverbindung für Rohre, bei welcher die vorhandenen Hinterschneidungen dazu dienen, ein Auseinanderziehen der Rohre zu verhindern. Die Schrumpfverbindung selbst hält lediglich infolge des Schrumpf druckes und des durch die Hinterschneidungen erzielten Ineinandergreifens der beiden überlappten Rohrenden.Although a pipe connection is known in which also undercut surfaces are present at the parting line, but this is a shrink connection for pipes in which the existing undercuts serve to to prevent the pipes from being pulled apart. The shrink connection itself holds only as a result of the shrinkage pressure and the achieved by the undercuts Interlocking of the two overlapped pipe ends.
In der Zeichnung sind zwei Ausführungsbeispiele der Erfindung dargestellt, und zwar zeigtIn the drawing, two exemplary embodiments of the invention are shown, namely shows
Abb. ι eine Ausführungsart mit senkrecht zur Blechoberßäche gerichteten Stoßkanten« und b undFig. 1 an embodiment with abutting edges directed perpendicular to the sheet metal surface «and b and
Abb. 2 eine Ausführungsart mit schräg zur Blechoberfiäche gerichtetenStoßkantenß und b. Fig. 2 shows an embodiment with abutting edges directed obliquely to the sheet metal surface and b.
Der unterschnitten ausgebildete Eingriff der Überlappungen hat den besonderen Vorteily daß die Blechkanten beim Schweißdruck vermöge der Gleitebene d in der Pfeilrichtung z, infolge des Druckes der Elektrodenrollen in Richtung der Pfeile D zusammengezogen werden, so daß die Stoßkanten α und b dadurch unter Druck einwandfrei zur Verschweißung kommen. Während des Schweißens bildet sich an der Gleitfläche d, da diese dem Schweißstrom den größten Widerstand entgegensetzt, die größte Erwärmung. Hier wird also der Werkstoff zuerst schmelzflüssig, so daß eine Gleitbewegung auf der Fläche d ermöglicht wird, die dann auch zur Verschweißung der Stoßkanten α und b führt.The undercut engagement of the overlaps has the particular advantage that the sheet metal edges are drawn together under pressure due to the sliding plane d in the direction of the arrow z due to the pressure of the electrode rollers in the direction of the arrows D , so that the abutting edges α and b are thus perfectly welded under pressure come. During welding, the greatest heating builds up on the sliding surface d, since this offers the greatest resistance to the welding current. Here the material becomes molten first, so that a sliding movement is made possible on the surface d, which then also leads to the welding of the abutting edges α and b .
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEV28108D DE677349C (en) | 1932-04-26 | 1932-04-26 | Process for electrical resistance welding of the longitudinal edges of thick-walled hollow bodies |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEV28108D DE677349C (en) | 1932-04-26 | 1932-04-26 | Process for electrical resistance welding of the longitudinal edges of thick-walled hollow bodies |
Publications (1)
Publication Number | Publication Date |
---|---|
DE677349C true DE677349C (en) | 1939-06-23 |
Family
ID=7583904
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEV28108D Expired DE677349C (en) | 1932-04-26 | 1932-04-26 | Process for electrical resistance welding of the longitudinal edges of thick-walled hollow bodies |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE677349C (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1021968B (en) * | 1956-06-16 | 1958-01-02 | Roehrenwerk Kempten Allgaeu Al | Method for resistance seam welding of overlapped metal sheets from one side using a blind electrode roller |
DE1167994B (en) * | 1960-01-07 | 1964-04-16 | Metal Containers Ltd | Sheet metal suitable for attaching a resistance overlap pinch seam |
WO1990010522A1 (en) * | 1987-09-08 | 1990-09-20 | Michael Schenk | Structural component with at least one cavity and process for obtaining it |
-
1932
- 1932-04-26 DE DEV28108D patent/DE677349C/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1021968B (en) * | 1956-06-16 | 1958-01-02 | Roehrenwerk Kempten Allgaeu Al | Method for resistance seam welding of overlapped metal sheets from one side using a blind electrode roller |
DE1167994B (en) * | 1960-01-07 | 1964-04-16 | Metal Containers Ltd | Sheet metal suitable for attaching a resistance overlap pinch seam |
WO1990010522A1 (en) * | 1987-09-08 | 1990-09-20 | Michael Schenk | Structural component with at least one cavity and process for obtaining it |
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