DE433727C - Air blower for butt welding wrought iron pipes - Google Patents

Air blower for butt welding wrought iron pipes

Info

Publication number
DE433727C
DE433727C DEF59202D DEF0059202D DE433727C DE 433727 C DE433727 C DE 433727C DE F59202 D DEF59202 D DE F59202D DE F0059202 D DEF0059202 D DE F0059202D DE 433727 C DE433727 C DE 433727C
Authority
DE
Germany
Prior art keywords
air blower
wrought iron
butt welding
iron pipes
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
Application number
DEF59202D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HANS RICHARD FRIDERICH DIPL IN
Original Assignee
HANS RICHARD FRIDERICH DIPL IN
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by HANS RICHARD FRIDERICH DIPL IN filed Critical HANS RICHARD FRIDERICH DIPL IN
Priority to DEF59202D priority Critical patent/DE433727C/en
Application granted granted Critical
Publication of DE433727C publication Critical patent/DE433727C/en
Expired legal-status Critical Current

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
    • B21C37/08—Making tubes with welded or soldered seams
    • B21C37/083—Supply, or operations combined with supply, of strip material

Description

Luftgebläse zum Stumpfschweißen schmiedeeiserner Rohre. Die beim Stumpfschweißen schmiedeeiserner Rohre an den Schweißkanten der in einem Ofen auf Schweißhitze gebrachten Blechstreifen anhaftende Schweißschlacke wurde bisher mittels Preßluft in horizontaler Blaserichtung entfernt. Dieses Verfahren hatte den Nachteil, daß die Schweißschlacke sich nicht vollkommen abblasen ließ, sondern sich an die untere Seite der Streifenkanten festsetzte und die Güte der Schweißung stark beeinträchtigte. Außerdem setzte sich die Schlacke im Rohrinnern fest, welcher Umstand, besonders bei galvanisierten Rohren, später Korrosionsstellen hervorrief.Air blower for butt welding wrought iron pipes. The one in butt welding wrought iron pipes on the welding edges which are heated in a furnace Welding slag adhering to sheet metal strips was hitherto horizontal by means of compressed air Direction of blowing removed. This method had the disadvantage that the welding slag could not be blown off completely, but on the lower side of the strip edges seized and severely impaired the quality of the weld. Also sat down the slag in the inside of the pipe, which circumstance, especially with galvanized pipes, later caused corrosion spots.

Die Erfindung soll einmal diesen Mißstand beheben, ferner eine tiefer gehende Verschweißung der Streifenkanten dadurch erreichen, daß durch die Zuführung der Blaseluft beidseitig, von oben wie von unten, die frei schwebenden Streifenkanten vollkommen umspült und gereinigt werden, so daß ein Eintreten der Schweißschlacke in die Schweißnaht unmöglich ist. Nachfolgende Erläuterung soll die Wirkungsweise des Gebläses kennzeichnen. Der im Schweißofen auf Schweißhitze erwärmte Röhrenstreifen a. wird im normalen Ziehprozeß durch einen Ziehtrichter c gezogen, wobei die Streifenkanten b stumpf zusammenstoßen und durch die im Ziehring auftretende Pressung verschweißen. Zur einwandfreien Verschweißung der Kanten ist es notwendig, daß die an den Kanten anhaftende Schweißschlacke vollständig entfernt wird. Um dies zu erreichen, wird das vorliegende Gebläse etwa 2o cm vor dem Ziehtrichter, zwischen diesem und dem Schweißofen, auf die Ziehbank aufgesetzt. Das Gebläse besteht aus einem Blasestutzen r mit abwärts gerichteten Blaseschlitzen und einem Barunterliegenden Blasestutzen a mit beidseitig nach oben wirkenden Blaseschlitzen. Stutzen z dient beim Ziehen gleichzeitig als Führungsschiene für den zu ziehenden Röhrenstreifen. Links und rechts trägt das Gebläse zwei Fußplatten 3 und q. zum Aufsetzen und Befestigen des Gebläses auf der Ziehbank. Auf der rechten Seite befindet sich der Anschlußstutzen 5 zum Anschließen an die Preßluftleitung. Beim Ziehvorgang gleitet nun der schweißwarme Röhrenstreifen, bevor er in den Ziehtrichter c eintritt, über - den Blasestutzen bzw. Führungsschiene a. Hierbei werden die Streifenkanten b der ausblasenden Preßluft in Raum 6 und 7 von Blasestutzen z und der Preßluft in Raum 8 und 9 von Blasestutzen i ausgesetzt, von oben und von, unten vollständig umspült und von der anhaftenden Schlacke so intensiv gereinigt, daß ein Einquetschen von Schlacken in die Schweißnaht ausgeschaltet wird.The invention is intended to remedy this deficiency and a deeper one achieve in-going welding of the strip edges that through the feed the blown air on both sides, from above and below, the free-floating strip edges completely rinsed and cleaned, so that an entry of the welding slag in the weld is impossible. The following explanation is intended to describe the mode of operation mark the blower. The tube strip heated to welding heat in the welding furnace a. is drawn in the normal drawing process through a drawing funnel c, the strip edges b butt together and weld by the pressure occurring in the drawing ring. For proper welding of the edges, it is necessary that the edges adhering welding slag is completely removed. To do this, will the present fan about 20 cm in front of the drawing funnel, between this and the Welding furnace, placed on the draw bench. The blower consists of a blower nozzle r with downwardly directed bladder slits and a bladder spigot underneath a with bubble slits acting upwards on both sides. Nozzle z is used when pulling at the same time as a guide rail for the tube strip to be drawn. Links and on the right the fan has two footplates 3 and q. for putting on and fastening the Blower on the draw bench. The connecting piece is on the right-hand side 5 for connection to the compressed air line. Slides during the pulling process now the sweat-warm tube strip before it enters the drawing funnel c over - the bladder nozzle or guide rail a. Here, the strip edges are b the blowing out compressed air in room 6 and 7 of the blower nozzle z and the compressed air in room 8 and 9 exposed by the nozzle i, completely washed around from above and from below and cleaned of the adhering slag so intensively that Slag in the weld is turned off.

Claims (1)

PATENTANSPRUCH: Luftgebläse zum Stumpfschweißen schmiedeeiserner Rohre, dadurch gekennzeichnet, daß die Blaseluft beidseitig von oben und unten die frei schwebenden Schweißkanten der Blechstreifen bestreicht. PATENT CLAIM: Air blower for butt welding wrought iron pipes, characterized in that the blown air sweeps the freely floating welding edges of the sheet metal strips on both sides from above and below.
DEF59202D 1925-06-26 1925-06-26 Air blower for butt welding wrought iron pipes Expired DE433727C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF59202D DE433727C (en) 1925-06-26 1925-06-26 Air blower for butt welding wrought iron pipes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF59202D DE433727C (en) 1925-06-26 1925-06-26 Air blower for butt welding wrought iron pipes

Publications (1)

Publication Number Publication Date
DE433727C true DE433727C (en) 1926-09-06

Family

ID=7108749

Family Applications (1)

Application Number Title Priority Date Filing Date
DEF59202D Expired DE433727C (en) 1925-06-26 1925-06-26 Air blower for butt welding wrought iron pipes

Country Status (1)

Country Link
DE (1) DE433727C (en)

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