EP0394754A3 - Verfahren und Vorrichtung zur selektiven Wärmebehandlung des Schweissnahtbereiches eines längsnahtgeschweissten Rohres - Google Patents

Verfahren und Vorrichtung zur selektiven Wärmebehandlung des Schweissnahtbereiches eines längsnahtgeschweissten Rohres Download PDF

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Publication number
EP0394754A3
EP0394754A3 EP19900106913 EP90106913A EP0394754A3 EP 0394754 A3 EP0394754 A3 EP 0394754A3 EP 19900106913 EP19900106913 EP 19900106913 EP 90106913 A EP90106913 A EP 90106913A EP 0394754 A3 EP0394754 A3 EP 0394754A3
Authority
EP
European Patent Office
Prior art keywords
weld
heat treatment
protective gas
less
longitudinally 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.)
Granted
Application number
EP19900106913
Other languages
English (en)
French (fr)
Other versions
EP0394754A2 (de
EP0394754B1 (de
Inventor
Friedhelm Schmitz
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0394754A2 publication Critical patent/EP0394754A2/de
Publication of EP0394754A3 publication Critical patent/EP0394754A3/de
Application granted granted Critical
Publication of EP0394754B1 publication Critical patent/EP0394754B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/50—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for welded joints

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

Die vorliegende Erfindung betrifft ein Verfahren zum selektiven Lösungsglühen des Schweißnahtbereiches (2, 3) eines längsnaht­ geschweißten Metallrohres (1). Insbesondere eignet sich das Verfahren für Rohre (1) mit einem Durchmesser von weniger als 100 mm und einer Wanddicke von weniger als 2,5 mm, vorzugsweise weniger als 0,7 mm. Im Verlauf der Wärmebehandlung wird die Schweißnaht (2) zunächst unter Schutzgas (1) so hoch erhitzt, daß ihr Außenbereich (2.1) aufgeschmolzen wird. Dies kann vorzugsweise durch einen Lichtbogen (7) erfolgen. Anschließend wird die Schweißnaht (2) selektiv durch weitere Heizmittel (8), beispielsweise weitere Lichtbogen, Infrarotstrahler oder In­ duktionsspulen, für einen vorgebbaren Zeitraum unter Schutz­ gas (I) mindestens auf einer für das Lösungsglühen des Rohr­ materials erforderlichen Temperatur (Tmin), aber zumindest im Innenbereich (2,2) der Schweißnaht (2) unterhalb der Schmelz­ temperatur (Ts) gehalten und danach unter Schutzgas (I) abge­ kühlt (10). Das einmalige oder mehrfache Anschmelzen des Außen­ bereiches (2.1) der Schweißnaht (2) verringert nicht die Qua­ lität der Wärmebehandlung im Innenbereich (2.2), so daß die erstrebte Korrosionsfestigkeit dort nicht leidet. Das teil­ weise Aufschmelzen erleichtert jedoch eine schnelle Wärme­ einbringung zur Aufheizung der Schweißnaht.
EP90106913A 1989-04-27 1990-04-11 Verfahren und Vorrichtung zur selektiven Wärmebehandlung des Schweissnahtbereiches eines längsnahtgeschweissten Rohres Expired - Lifetime EP0394754B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3913973A DE3913973A1 (de) 1989-04-27 1989-04-27 Verfahren und vorrichtung zur selektiven waermebehandlung des schweissnahtbereiches eines laengsnahtgeschweissten rohres
DE3913973 1989-04-27

Publications (3)

Publication Number Publication Date
EP0394754A2 EP0394754A2 (de) 1990-10-31
EP0394754A3 true EP0394754A3 (de) 1992-10-14
EP0394754B1 EP0394754B1 (de) 1994-08-17

Family

ID=6379624

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90106913A Expired - Lifetime EP0394754B1 (de) 1989-04-27 1990-04-11 Verfahren und Vorrichtung zur selektiven Wärmebehandlung des Schweissnahtbereiches eines längsnahtgeschweissten Rohres

Country Status (4)

Country Link
EP (1) EP0394754B1 (de)
AT (1) ATE110116T1 (de)
DE (2) DE3913973A1 (de)
ES (1) ES2057241T3 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008060205A1 (de) * 2008-12-04 2010-06-10 Rolls-Royce Deutschland Ltd & Co Kg Verfahren zur Herstellung eines geschweißten Rotors für ein Gasturbinentriebwerk
DE102010044799A1 (de) * 2010-09-09 2012-04-26 Benteler Automobiltechnik Gmbh Stabilisator und Verfahren zum Herstellen eines Stabilisators
EP2357099B1 (de) * 2010-02-16 2017-07-12 Benteler Automobiltechnik GmbH Stabilisator und Verfahren zum Herstellen eines Stabilisators
CN116689963B (zh) * 2023-06-25 2023-12-01 浙江摩多巴克斯科技股份有限公司 一种高强度钢管的激光焊接工艺

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2673276A (en) * 1951-02-01 1954-03-23 Babcock & Wilcox Co Post heating of electrically welded tubes in line of production
AT297449B (de) * 1970-07-14 1972-03-27 Simmering Graz Pauker Ag Verfahren zur Herstellung von Schweißnähten in einer Schutzgasatmosphäre mit vorzugsweise nicht abschmelzender Elektrode
DE2264071A1 (de) * 1971-12-30 1973-09-06 Rotterdamsche Droogdok Mij Verfahren zur rekristallisation eines basismaterials unter einer ueberzugsschicht
DE1558004C2 (de) * 1967-06-14 1974-07-11 Mannesmannroehren-Werke As, 4000 Duesseldorf Verfahren zur Wärmebehandlung von Schweißnähten
EP0234200A1 (de) * 1986-01-21 1987-09-02 Siemens Aktiengesellschaft Verfahren und Vorrichtungen zur Wärmebehandlung von längsnahtgeschweissten Rohren
EP0322758A1 (de) * 1987-12-24 1989-07-05 Schoeller Werk GmbH & Co KG Verfahren zur Wärmebehandlung der Schweissnaht an längsge-schweissten Metallrohren und Vorrichtung zur Durchführung des Verfahrens

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2673276A (en) * 1951-02-01 1954-03-23 Babcock & Wilcox Co Post heating of electrically welded tubes in line of production
DE1558004C2 (de) * 1967-06-14 1974-07-11 Mannesmannroehren-Werke As, 4000 Duesseldorf Verfahren zur Wärmebehandlung von Schweißnähten
AT297449B (de) * 1970-07-14 1972-03-27 Simmering Graz Pauker Ag Verfahren zur Herstellung von Schweißnähten in einer Schutzgasatmosphäre mit vorzugsweise nicht abschmelzender Elektrode
DE2264071A1 (de) * 1971-12-30 1973-09-06 Rotterdamsche Droogdok Mij Verfahren zur rekristallisation eines basismaterials unter einer ueberzugsschicht
EP0234200A1 (de) * 1986-01-21 1987-09-02 Siemens Aktiengesellschaft Verfahren und Vorrichtungen zur Wärmebehandlung von längsnahtgeschweissten Rohren
EP0322758A1 (de) * 1987-12-24 1989-07-05 Schoeller Werk GmbH & Co KG Verfahren zur Wärmebehandlung der Schweissnaht an längsge-schweissten Metallrohren und Vorrichtung zur Durchführung des Verfahrens

Also Published As

Publication number Publication date
DE3913973A1 (de) 1990-10-31
DE59006808D1 (de) 1994-09-22
ATE110116T1 (de) 1994-09-15
EP0394754A2 (de) 1990-10-31
ES2057241T3 (es) 1994-10-16
EP0394754B1 (de) 1994-08-17

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