DE4214492A1 - Welded pipe joint with internal welding sleeve - Google Patents

Welded pipe joint with internal welding sleeve

Info

Publication number
DE4214492A1
DE4214492A1 DE19924214492 DE4214492A DE4214492A1 DE 4214492 A1 DE4214492 A1 DE 4214492A1 DE 19924214492 DE19924214492 DE 19924214492 DE 4214492 A DE4214492 A DE 4214492A DE 4214492 A1 DE4214492 A1 DE 4214492A1
Authority
DE
Germany
Prior art keywords
welding ring
cone
cone welding
welding sleeve
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.)
Withdrawn
Application number
DE19924214492
Other languages
German (de)
Inventor
Erfinder Wird Nachtraeglich Benannt Der
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.)
Meyer H & Co Spezialstahl
Original Assignee
Meyer H & Co Spezialstahl
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 Meyer H & Co Spezialstahl filed Critical Meyer H & Co Spezialstahl
Priority to DE19924214492 priority Critical patent/DE4214492A1/en
Priority to DE59306814T priority patent/DE59306814D1/en
Priority to EP93201258A priority patent/EP0569093B1/en
Priority to ES93201258T priority patent/ES2106952T3/en
Priority to AT93201258T priority patent/ATE154772T1/en
Priority to US08/057,768 priority patent/US5395142A/en
Publication of DE4214492A1 publication Critical patent/DE4214492A1/en
Withdrawn legal-status Critical Current

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
    • B23K9/00—Arc welding or cutting
    • B23K9/02—Seam welding; Backing means; Inserts
    • B23K9/035—Seam welding; Backing means; Inserts with backing means disposed under the seam
    • B23K9/0358—Seam welding; Backing means; Inserts with backing means disposed under the seam the backing means being a ring or sleeve
    • 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
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
    • B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
    • B23K37/0531—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor internal pipe alignment clamps

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Optics & Photonics (AREA)
  • Plasma & Fusion (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Arc Welding In General (AREA)

Abstract

Welded pipe joint with internal welding sleeve having a thin separating layer of non-adhering material in the area of the weld. The separating layer (15) on the outside of the welding sleeve (10) is pref. of ceramic and/or refractory material and not more than 1 mm, pref. 0.5mm thick. At least one of the parts to be joined (19,20) is enlarged conically towards the weld seam and the welding sleeve (10) has a corresp. seating (12).

Description

Der erfindungsgemäße Konusschweißring soll schweißtechnische Vorteile ermöglichen, gleichzeitig aber wirtschaftliche Verbes­ serungen und umweltfreundliche Verlegung von Hydraulikrohrlei­ tungen bieten.The cone welding ring according to the invention is intended for welding Enable advantages, but at the same time economic verb changes and environmentally friendly laying of hydraulic tubing offer.

Aus dem Gebrauchsmuster G 8 70 112.2 ist ein Konusschweißring bekannt, der z. B. bei einer geraden Rohrverbindung, jeweils die beiden Rohrenden und den Konusschweißring bei einer Schweißung erfassen muß. Schweißtechnisch ist bekannt, daß alle zu ver­ schweißenden Teile möglichst eine gleiche Schweißtemperatur haben sollten. Da aber der Konusschweißring zur Ringmitte hin die Wärme schneller abstrahlen kann, liegt es an der Geschick­ lichkeit des Schweißers, durch gute Schweißbadführung dieses Manko auszugleichen.A conical welding ring is from utility model G 8 70 112.2 known the z. B. in a straight pipe connection, each both pipe ends and the cone welding ring during a weld must record. Welding technology is known to all ver welding parts have the same welding temperature if possible should have. But since the cone welding ring towards the center of the ring the heat can radiate faster, it is due to skill the welder, through good welding pool management To compensate for the shortcoming.

Bei dem neuen Schweißkonusring wird durch die Trennschicht ein Abstrahlen der Wärme in die Bohrung des Konusschweißringes verhindert, so daß im Bereich des Schweißbades ein Wärmestau entsteht. Dieser Wärmestau trägt dazu bei, daß die Schweißnaht eine langsame Abkühlung hat und dadurch eine Qualitätsverbes­ serung der Naht eintritt.With the new welding cone ring, the Radiate the heat in the bore of the cone welding ring prevents heat accumulation in the area of the weld pool arises. This build-up of heat contributes to the weld seam has a slow cooling and therefore a quality deterioration the seam occurs.

Da vor allen Dingen bei der Verschweißung von Duplex-Stählen (1.4462) eine langsame Abkühlung der Schweißnaht gefordert wird, ist dieser Konusschweißring für Materialien dieser Güte besonders geeignet.Because, above all, when welding duplex steels (1.4462) slow cooling of the weld is required this cone welding ring is for materials of this quality particularly suitable.

Neben der verbesserten Schweißbadführung und der besseren Nahtqualität kommen aber auch wirtschaftliche Vorteile zum Tragen.In addition to the improved weld pool management and the better But seam quality also has economic advantages Wear.

In Hydraulikanlagen werden sowohl Stahlrohre als auch Edelstahl­ rohre eingesetzt und verschweißt. Dabei entsteht Zunder, der entweder verhindert werden muß, oder bekanntermaßen abgebeizt wird. Um hier eine Abhilfe zu schaffen, wurden die Konus­ schweißringe aus Edelstahl eingesetzt. Das hatte zur Folge, daß Stahlrohr und Edelstahlring verschweißt werden mußten. Dazu ist Spezial-Schweißdraht notwendig, der nicht überall im Vorrat gehalten wird. Both steel pipes and stainless steel are used in hydraulic systems tubes inserted and welded. This creates tinder that either must be prevented or is known to be stripped becomes. To remedy this, the cones welding rings made of stainless steel. As a result, Steel pipe and stainless steel ring had to be welded. To special welding wire is necessary, which is not in stock everywhere is held.  

Der neuartige Konusschweißring verhindert durch die Trenn­ schicht eine Verschweißung der Rohre mit dem Konusschweißring, sodaß dieser Ring für Stahl und Edelstahlrohre eingesetzt werden kann. Dabei kann der für die jeweilige Rohrqualität zugelassene Schweißzusatz verwendet werden. Außerdem gelingt eine Qualitäts-Schweißnaht, wo nur die beiden Rohrenden bei der Wurzellage erfaßt werden müssen, wesentlich leichter. Die neue Schweißung ist einer V-Naht vergleichbar.The new conical welding ring prevents the separation layer a welding of the pipes with the cone welding ring, so that this ring is used for steel and stainless steel pipes can be. The can for the respective pipe quality approved filler metal can be used. It also works a quality weld where only the two pipe ends at the Root position must be detected, much easier. The new Welding is comparable to a V-seam.

Aus der Sicht des Umweltschutzes werden beim Einsatz des hier beschriebenen Konusschweißringes keine Beizarbeiten mehr in hydraulischen Rohranlagen notwendig werden. Dieser Vorteil wird sich vor allen Dingen bei Reparaturarbeiten bemerkbar machen, da der nachträgliche Einbau von Rohren in bestehende Leitungsanla­ gen immer sehr aufwendig war. Allein die Entsorgung der Beizbä­ der bereitet viel Schwierigkeiten und ist mit großen Kosten verbunden.From an environmental point of view, when using the here described cone welding ring no more pickling work in hydraulic pipe systems become necessary. This advantage will make themselves particularly noticeable in repair work, because the subsequent installation of pipes in existing pipe systems gene was always very expensive. The disposal of the Beizbä alone it causes a lot of difficulties and is very expensive connected.

Erfindungsgemäß trägt also der neue Konusschweißring dazu bei, daß die Schweißnähte eine bessere Qualität erhalten, die Umwelt schont und die Wirtschaftlichkeit verbessert wird.According to the invention, the new cone welding ring thus contributes to that the welds get a better quality, the Protects the environment and improves economy.

Die Ausführungsbeispiele der Erfindung sind in Zeichnungen dargestellt.The embodiments of the invention are in drawings shown.

Fig. 1 Konusschweißring mit Hinterdrehung und Trenn­ schicht, Fig. 1 cone weld ring with groove and release layer,

Fig. 2 Verteilerstück mit halbem Konusschweißring. Fig. 2 distributor with half cone welding ring.

Claims (5)

1. Konusschweißring mit einer, für die Aufnahme einer Trennschicht versehenen, Hinterdrehung (1) im Bereich der Schweißnaht.1. Cone welding ring with a back turn ( 1 ) in the area of the weld seam to accommodate a separating layer. 2. Konusschweißring nach Anspruch 1, dadurch gekennzeichnet, daß das Trennmaterial (2) aus einem wärmeabweisenden, mit der Schweiße keine Verbindung eingehenden Werkstoff (z. B. Alumini­ umoxyd) besteht.2. cone welding ring according to claim 1, characterized in that the separating material ( 2 ) consists of a heat-repellent, with the weld no connection incoming material (z. B. Aluminum oxide). 3. Konusschweißring nach Anspruch 1, dadurch gekennzeichnet, daß die Begrenzung der Hinterdrehung eine scharfe Abrißkante (3) aufweist.3. cone welding ring according to claim 1, characterized in that the limitation of the rear rotation has a sharp tear-off edge ( 3 ). 4. Konusschweißring nach Anspruch 1 und 2, dadurch gekennzeichnet, daß die Fluchtlinie (4) des Konus durch die wärmeabweisende Schicht nicht überschritten wird.4. cone welding ring according to claim 1 and 2, characterized in that the alignment line ( 4 ) of the cone is not exceeded by the heat-repellent layer. 5. Konusschweißring nach Anspruch 1 und 2, dadurch gekennzeichnet, daß der für Verteilerstücke bestimmte halbe Konusschweißring im zylindrischen Ansatz eine Hinterdrehung angearbeitet hat. Diese Hinterdrehung soll so gestaltet sein, daß die aufgebrachte, wärmeabweisende Trennschicht in die Ausdrehung (5) des Vertei­ lerstückes mit hineinreicht. Den Halt des halben Konusschweißringes im Verteilerstück über­ nimmt der zylindrische Begrenzungssteg (6).5. cone welding ring according to claim 1 and 2, characterized in that the half cone welding ring intended for distributors has worked a backward rotation in the cylindrical approach. This backward rotation should be designed so that the applied, heat-repellent separating layer extends into the recess ( 5 ) of the distributor piece. The cylindrical limiting web ( 6 ) holds the half cone welding ring in the distributor piece.
DE19924214492 1992-05-07 1992-05-07 Welded pipe joint with internal welding sleeve Withdrawn DE4214492A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DE19924214492 DE4214492A1 (en) 1992-05-07 1992-05-07 Welded pipe joint with internal welding sleeve
DE59306814T DE59306814D1 (en) 1992-05-07 1993-05-04 Pipe connection and welding sleeve for such a pipe connection
EP93201258A EP0569093B1 (en) 1992-05-07 1993-05-04 Pipe connection and weld support ring for such a connection
ES93201258T ES2106952T3 (en) 1992-05-07 1993-05-04 PIPE JOINT AS WELDING HOSE FOR A PIPE JOINT OF THIS TYPE.
AT93201258T ATE154772T1 (en) 1992-05-07 1993-05-04 PIPE CONNECTION AND WELD SLEEVE FOR SUCH A PIPE CONNECTION
US08/057,768 US5395142A (en) 1992-05-07 1993-05-07 Welding joint and backing sleeve therefore

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19924214492 DE4214492A1 (en) 1992-05-07 1992-05-07 Welded pipe joint with internal welding sleeve

Publications (1)

Publication Number Publication Date
DE4214492A1 true DE4214492A1 (en) 1993-11-11

Family

ID=6457986

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19924214492 Withdrawn DE4214492A1 (en) 1992-05-07 1992-05-07 Welded pipe joint with internal welding sleeve

Country Status (1)

Country Link
DE (1) DE4214492A1 (en)

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Legal Events

Date Code Title Description
8181 Inventor (new situation)

Free format text: HORN, JOACHIM, 47877 WILLICH, DE

8139 Disposal/non-payment of the annual fee