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DE1808275A1 - Resistance seam welding of hot galvanised - steel sheet - Google Patents

Resistance seam welding of hot galvanised - steel sheet

Info

Publication number
DE1808275A1
DE1808275A1 DE19681808275 DE1808275A DE1808275A1 DE 1808275 A1 DE1808275 A1 DE 1808275A1 DE 19681808275 DE19681808275 DE 19681808275 DE 1808275 A DE1808275 A DE 1808275A DE 1808275 A1 DE1808275 A1 DE 1808275A1
Authority
DE
Germany
Prior art keywords
welding
steel sheets
seam welding
resistance seam
hot
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
Application number
DE19681808275
Other languages
German (de)
Inventor
Albert Schmitt
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.)
Messer Griesheim GmbH
Original Assignee
Messer Griesheim GmbH
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 Messer Griesheim GmbH filed Critical Messer Griesheim GmbH
Priority to DE19681808275 priority Critical patent/DE1808275A1/en
Publication of DE1808275A1 publication Critical patent/DE1808275A1/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K11/00Resistance welding; Severing by resistance heating
    • B23K11/16Resistance welding; Severing by resistance heating taking account of the properties of the material to be welded
    • B23K11/163Welding of coated materials
    • B23K11/166Welding of coated materials of galvanized or tinned materials

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Resistance Welding (AREA)

Abstract

Resistance seam welding of hot galvanised steel sheet. During the welding process as in DT 1565755 only pressurised water or compressed air is supplied to the point of contact of the electrode rollers with the galvanised steel sheets being welded. The outlet openings of the pressurised water or air pipes are directed towards this point of contact. The high pressure jets sweep aside zinc-oxide and zinc fumes produced during welding thereby facilitating the formation of a sound weld.

Description

Verfahren und Maschine zum Widerstandsnahtschweißen von oberflächenveredelten Stahlblechen, insbesondere feuerverzinkten Stahlblechen Zusatzpatent zum Hauptpatent Nr. .......... Process and machine for resistance seam welding of surface-refined Sheet steel, in particular hot-dip galvanized sheet steel, additional patent to the main patent No. ..........

(P a t e n t a n m e l d u n g P 15 65 755.3). (P a t e n t a n m e l d u n g P 15 65 755.3).

Die Erfindung betrifft ein Verfahren und eine Ivlaschine zum Widerstandsnahtschweißen von oberflächenveredelten Stahlblechen, insbesondere feuerverzinkten Stahlblechen.The invention relates to a method and a machine for resistance seam welding of surface-refined steel sheets, especially hot-dip galvanized steel sheets.

Nach dem Hauptpatent Nr. .......... (P a t e n t a n m e l d u n g P 15 65 755.3) wird zwischen den Elektrodenrollen der Nahtschweißmaschine und den ihnen zugewandten veredelten Oberflächen der zu verschweißenden Bleche ein mit zu verschweiendes Metallbaild ohne vendelte Oberfläche zugeleitet und während des Schweißprozesses wird den Kontaktstellen der Elektroienrolleii mit den Metallbäridern Druckwasser oder Druckluft zugeleitet. Dieses Verfahren ergibt optimale Schweißqualitäten beim Verschweißen von feuerverzinkten Stahlblechen. Wünschenswert wäre es aber, die zusätzliche Zufuhr von mit zu verschweißenden Metallbändern zu vermeiden, denn hierdurch wird das Schweißverfahren verteuert und ein zusätzlicher Aufwand an der zur Durchführung des Verfahrens einzusetzenden elektrischen widerstardsnahtschweißmaschine notwendig.According to the main patent no. .......... (P a t e n t a n m e l d u n g P 15 65 755.3) is placed between the electrode rollers of the seam welding machine and the facing them refined surfaces of the sheets to be welded one with too Welding metal structure without a curved surface and supplied during the welding process the contact points of the Elektroienrolleii with the Metallbäridern will be pressurized water or Compressed air supplied. This process results in optimal welding quality when welding hot-dip galvanized steel sheets. It would be desirable, however, to avoid the additional supply of metal strips to be welded, because This makes the welding process more expensive and an additional effort on the electrical resistance seam welding machine to be used to carry out the process necessary.

Aufgabe der Erfindung ist es, das \Widerstandsschweißen von oberflächenveredelten Stahlblechen, insbesondere feuerverzinkten Stahlblechen zu vereinfachen und zu verbilligen.The object of the invention is the \ resistance welding of surface-refined To simplify steel sheets, in particular hot-dip galvanized steel sheets, and to make them cheaper.

Die Erfindung löst diese Aufgabe dadurch, daß während des Schweißprozesses den Kontaktstellen der Elektrodenrollen mit den zu verschweißenden oberflächenveredelten Stahlblechen nur Druckwasser oder Druckluft zugeleitet wird.The invention solves this problem in that during the welding process the contact points of the electrode rollers with the surface-refined ones to be welded Steel sheets are only supplied with pressurized water or compressed air.

In der Praxis hat sich gezeigt, daß feuerverzinkte Stahlbleche, die eine Stärke von 0,8 mm und mehr besitzesl, auch ohne Benutzung eines mitzuverschweißenden Metallbandes mit genügend guter Schweißqualität verschwelt werden können.In practice it has been shown that hot-dip galvanized steel sheets, the Have a thickness of 0.8 mm and more, even without using one to be welded Metal strip can be carbonized with a sufficiently good welding quality.

Der mit einem Druck von vorzugsweise 2 atü und mehr eindeutig auf die Oberfläche der Elektrodenrollen gerichtete Hochdruckflüssigkeitsstrahl läßt kein Festsetzen von Zink auf den Elektrodenroll enschweißflächea zu, denn die beim Verschweißen der feuerverzinkten Bleche entstehenden Zinkoxyde und -gase werden von dem Hochdruckflüssigkeitsstrahl weggerissen.The one with a pressure of preferably 2 atmospheres and more clearly the surface of the electrode rollers can direct high pressure liquid jet zinc does not adhere to the electrode roll welding surface, because the Welding of the hot-dip galvanized sheets, resulting zinc oxides and gases torn away by the high pressure liquid jet.

Die elektrische iderstasnahtschweimaschine zur tusführu dieses Verfahrens ist geketmzeichnet durch Druckwasser-bzw. Druckluftleitungen, deren tustrittsöffnungen auf die Kontaktstellen der Elektrodenrollen mit den zu verschwei-Benden oberflächenveredelten Stahlblechen gerichtet sind.The electric idersteam welding machine to carry out this process is marked by pressurized water or. Compressed air lines, their outlets on the contact points of the electrode rollers with the surfaces to be welded Steel sheets are directed.

Die Erfindung wird nachfolgend anhand eines in der Zeichnung dargestellten Ausführungsbeisieles näher erläutert.The invention is illustrated below with reference to one in the drawing Implementation example explained in more detail.

Die Zeichnung zeigt einen vertikalen Teilquerschnitt der Elektrodeurollen einer Widerstandsnaht schweißmaschine nach der Erfirldung.The drawing shows a partial vertical cross-section of the electrode rollers a resistance seam welding machine after the invention.

Die elektrische Mahtschweißmaschine weist wie üblich eine obere Blektrodenrolle 2 und eine untere Elektrodenrolle 7 auf. Die beidseitig feuererzinkten Stahlbleche 15 und 16 werden unter hinwendung des durch die Elektrodenrollen 2, 7 aufzubringenden Schweindruckes nach Einschalten des Schwißstromes überlappt miteiriander verschweiDt. Die Zinkschichten der Stahlbleche solid mit 20 bzw. 17 bezeichnet. Druckwasser-bzw. Druckluftzuleitungen 11, 12 - sind vorzugsweise paarweise jeder Elektrodenrolle 2 bzw. 7 zugeordnet, wobei aus den düsenförmigen Enden 17 und 14 dieser Zuleitungen von der Seite her zu den Elektrodenkontaktstellen 5, 10 der Druckwasser - oder Druckluftstrahl zugeführt wird. Die für die Elektrodeprollen bestehende Gefahr des nlegierens von Zink bzw. Zinkoxyden infolge der Verdampfung der Zinkschichten der initelijander zu verschweißenden Stahlbleche wird durch den Druckwasser- bzw. Druckluftstrahl aus den Düsen 13, 14 vermieden, der gegen die Entstehungsstellen von flüssigem Ziijk sowie Zinkdämpfen und Zinkoxyden gerichtet ist.As usual, the electric maht welding machine has an upper metal electrode roller 2 and a lower electrode roller 7. The sheet steel, hot-dip galvanized on both sides 15 and 16 are applied using the electrode rollers 2, 7 Welding impression after switching on the welding current overlaps with each other. The zinc layers of the steel sheets are solidly denoted by 20 and 17, respectively. Pressurized water or Compressed air supply lines 11, 12 - are preferably in pairs for each electrode roller 2 and 7 assigned, with the nozzle-shaped ends 17 and 14 of these supply lines from the side to the electrode contact points 5, 10 the pressurized water or compressed air jet is fed. The danger of alloying of Zinc or zinc oxides as a result of the evaporation of the zinc layers of the initelijander The steel sheets to be welded are activated by the jet of pressurized water or compressed air from the nozzles 13, 14 avoided against the points of formation of liquid Ziijk as well as zinc vapors and zinc oxides.

Claims (2)

PatentansprücheClaims 1. Verfahren zum iderstandsnahtschweien von oberflächenveredelten Stahlblechen, insbesondere feuerverzinkten Stahlblechen, nach Patent Ihr. * Nr (Patentanmeldung Nr. P 15 65 755.3), dadurch gekennzeichnet, daß während des Schweißprozesses den Kontaktstellen der Elektrodenrollen mit den zu verschweißenden oberflächenveredelten Stahlblechen nur Druckwasser oder Druckluft zugeleitet wird.1. Process for resistance seam welding of surface-refined Steel sheets, especially hot-dip galvanized steel sheets, according to patent Ihr. * No (patent application No. P 15 65 755.3), characterized in that the Contact points of the electrode rollers with the surface-refined ones to be welded Steel sheets are only supplied with pressurized water or compressed air. 2. Elektrische Widerstandsnahtschweißmaschine, zur Ausführung des Verfahrens nach Anspruch 1, gekennzeichnet durch Druckwasser- bzw. Druckluftleitungen, deren Austrittsöffnungen auf die Kontaktstellen der Elektrodenrollen mit den zu verschweißenden oberflächenveredelten Stahlblechen gerichtet sind.2. Electric resistance seam welding machine, for the execution of the Method according to claim 1, characterized by pressurized water or compressed air lines, their outlet openings to the contact points of the electrode rollers with the Welding surface-finished steel sheets are directed.
DE19681808275 1966-04-23 1968-11-11 Resistance seam welding of hot galvanised - steel sheet Pending DE1808275A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19681808275 DE1808275A1 (en) 1966-04-23 1968-11-11 Resistance seam welding of hot galvanised - steel sheet

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP0039271 1966-04-23
DE19681808275 DE1808275A1 (en) 1966-04-23 1968-11-11 Resistance seam welding of hot galvanised - steel sheet

Publications (1)

Publication Number Publication Date
DE1808275A1 true DE1808275A1 (en) 1971-06-09

Family

ID=32509284

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19681808275 Pending DE1808275A1 (en) 1966-04-23 1968-11-11 Resistance seam welding of hot galvanised - steel sheet

Country Status (1)

Country Link
DE (1) DE1808275A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4432912A1 (en) * 1993-09-17 1995-03-30 Gen Motors Corp Process for seam welding of coated steel
FR2734503A1 (en) * 1995-05-23 1996-11-29 Bailleux Jacques Fabrication process for weave for welded wire lattice cable routes

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4432912A1 (en) * 1993-09-17 1995-03-30 Gen Motors Corp Process for seam welding of coated steel
DE4432912C2 (en) * 1993-09-17 2002-05-08 Gen Motors Corp Process for pinch welding or lap welding
FR2734503A1 (en) * 1995-05-23 1996-11-29 Bailleux Jacques Fabrication process for weave for welded wire lattice cable routes

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