EP0234200A1 - Procédé et dispositif pour le traitement thermique de tubes sondés longitudinalement - Google Patents

Procédé et dispositif pour le traitement thermique de tubes sondés longitudinalement Download PDF

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Publication number
EP0234200A1
EP0234200A1 EP87100199A EP87100199A EP0234200A1 EP 0234200 A1 EP0234200 A1 EP 0234200A1 EP 87100199 A EP87100199 A EP 87100199A EP 87100199 A EP87100199 A EP 87100199A EP 0234200 A1 EP0234200 A1 EP 0234200A1
Authority
EP
European Patent Office
Prior art keywords
annealing
weld seam
tubes
heat treatment
annealed
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
EP87100199A
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German (de)
English (en)
Other versions
EP0234200B1 (fr
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
Kraftwerk Union AG
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
Priority claimed from DE19863639403 external-priority patent/DE3639403A1/de
Application filed by Kraftwerk Union AG, Siemens AG filed Critical Kraftwerk Union AG
Priority to AT87100199T priority Critical patent/ATE58919T1/de
Publication of EP0234200A1 publication Critical patent/EP0234200A1/fr
Application granted granted Critical
Publication of EP0234200B1 publication Critical patent/EP0234200B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/002—Heat treatment of ferrous alloys containing Cr
    • 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
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
    • C23C8/24—Nitriding
    • C23C8/26—Nitriding of ferrous surfaces

Definitions

  • the present invention relates to a method for the heat treatment of longitudinally welded tubes according to the preamble of claim 1 and device for carrying out the method.
  • Stainless steel pipes e.g. B. for steam condensers
  • heat treatment after longitudinal seam welding to reduce stresses and to reduce segregations that occur through the welding process. This results e.g. B. from an article by K. Schleithoff, F. Schmitz: "Condenser tubes made of stainless steels - operating experience and material development" in "VGB Kraftmaschinestechnik 61", Issue 9, p. 730, Sept. 1981.
  • the heat treatment is usually carried out continuously - Annealing furnaces under protective gas at temperatures of 950 ° C to 1100 0 C and a holding time of a few minutes depending on the material. Other annealing processes are also used.
  • the essential idea of the invention is to carry out only a partial solution annealing of the weld seam and the heat affected zone. This annealing can be carried out inside or outside the welding path.
  • molybdenum-containing steels temperatures can even be set above 1200 ° C or even 13 00 C in the weld area and the heat affected zone, which leads to an optimized solution annealing and lead to a better balance of chrome or molybdenum segregation.
  • the remaining tube wall temperature of the other areas is set so low that problem-free processing in the welding, processing and annealing and deformation section is possible, but a reduction in the stresses which have been introduced by the manufacturing process is achieved.
  • the proposed annealing treatment basically offers the possibility of significantly increasing both the temperature and the holding time compared to conventional methods. It is also possible to manufacture testable thin-walled tubes.
  • the desired selective annealing can be achieved by partial heating and / or partial cooling. Depending on the desired holding time, partial heating may be sufficient, but it can be supplemented at any time by cooling the areas of the pipe that are not to be annealed, as long as the remaining pipe would be heated too much by heat conduction or radiation.
  • Various methods can be used for the partial heating, for example using infrared radiators, lasers or correspondingly guided electrical currents which are induced in the tube.
  • An increased proportion of nitrogen, which would impair the weldability of the material, can be according to claim 8 after welding by annealing in an atmosphere suitable partial pressure of nitrogen or a nitrogen compound can be achieved. This considerably improves the corrosion properties of the pipe or the weld seam.
  • FIG. 1 The cross section shown in FIG. 1 through a longitudinally welded tube 1 illustrates the areas of the tube which are essential for the invention.
  • the individual zones are not shown to scale.
  • the weld seam 2 is generally located on the top of the tube 1 during manufacture. It is surrounded by a heat-affected zone 3, in which the welding process has left changes and inhomogeneities.
  • the rest of the tube consists of unchanged base material, but it makes sense to include an area 4 outside of the heat affected zone 3 during a heat treatment for safety reasons, since the exact extent of the heat affected zone 3 is not always known.
  • FIG. 2 shows a device for the partial annealing of a tube 1 welded by welding.
  • the weld seam 2 with the heat-affected zone 3 surrounding it will again generally lie on the top of the tube.
  • the tube 1 to be annealed should preferably be kept under protective gas during the annealing in order to avoid subsequent pickling.
  • the tube 1 to be annealed is located inside a quartz glass tube 5, the space 9 between the two being filled with protective gas.
  • One or more infrared emitters 6 are arranged above the quartz glass tube 5 and provided with focusing reflectors 8 in a housing 7.
  • the focusing reflectors can, for example, have a parabolic cross section, in the focal point or focal line of which there are infrared radiators.
  • the infrared rays are focused in such a way that they irradiate and heat up the desired area 4 of the tube 1 to be partially annealed.
  • the desired partial annealing can be carried out over almost any holding times, although annealing in a continuous process under a corresponding annealing section is preferable.
  • the present invention enables the use of steels with, for example, a lower molybdenum content for longitudinally welded corrosion-resistant pipes and also enables the production of thin-walled pipes with a wall thickness of, for. B. 0.3 to 0.5mm.
EP87100199A 1986-01-21 1987-01-09 Procédé et dispositif pour le traitement thermique de tubes sondés longitudinalement Expired - Lifetime EP0234200B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87100199T ATE58919T1 (de) 1986-01-21 1987-01-09 Verfahren und vorrichtungen zur waermebehandlung von laengsnahtgeschweissten rohren.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3601670 1986-01-21
DE3601670 1986-01-21
DE19863639403 DE3639403A1 (de) 1986-11-18 1986-11-18 Verfahren zur verbesserung der korrosionsbestaendigkeit von geschweissten werkstuecken aus nicht-rostendem stahl und entsprechend hergestelltes werkstueck
DE3639403 1986-11-18

Publications (2)

Publication Number Publication Date
EP0234200A1 true EP0234200A1 (fr) 1987-09-02
EP0234200B1 EP0234200B1 (fr) 1990-12-05

Family

ID=25840297

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87100199A Expired - Lifetime EP0234200B1 (fr) 1986-01-21 1987-01-09 Procédé et dispositif pour le traitement thermique de tubes sondés longitudinalement

Country Status (5)

Country Link
US (1) US4975128A (fr)
EP (1) EP0234200B1 (fr)
JP (1) JP2668870B2 (fr)
BR (1) BR8700234A (fr)
DE (1) DE3766507D1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0322758A1 (fr) * 1987-12-24 1989-07-05 Schoeller Werk GmbH & Co KG Procédé et dispositif pour le traitement thermique du joint soudé de tubes métalliques soudés longitudinalement
EP0394754A2 (fr) * 1989-04-27 1990-10-31 Siemens Aktiengesellschaft Procédé et dispositif pour le traitement thermique sélectif de la zone d'un cordon de soudure d'un tube soudé longitudinalement
US5022936A (en) * 1988-12-07 1991-06-11 Hitachi, Ltd. Method for improving property of weld of austenitic stainless steel
EP2019149A1 (fr) 2007-07-19 2009-01-28 United Technologies Corporation Appareil et procédé de traitement thermique localisé pour composants métalliques
DE102022105659A1 (de) 2022-03-10 2023-09-14 Vdm Metals International Gmbh Verfahren zur Herstellung eines mit Schweißnähten versehenen Bauteils aus einer Nickel-Chrom-Aluminium-Legierung
WO2023169628A1 (fr) 2022-03-10 2023-09-14 Vdm Metals International Gmbh Procédé de fabrication d'un composant à partir du produit semi-fini d'un alliage nickel-chrome-aluminium

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5217158A (en) * 1992-07-14 1993-06-08 Brush Wellman, Inc. Process for thermodynamically treating a region joining two members
JP2002544377A (ja) * 1999-05-10 2002-12-24 マンネスマンレーレン‐ヴェルケ・アクチエンゲゼルシャフト 高強度と靭性特性と変形特性とを有する溶接鋼管を製造するための方法
CA2538112C (fr) * 2000-09-11 2009-11-10 Baker Hughes Incorporated Ecran multicouche et procede d'achevement de fond de trou
US7540402B2 (en) * 2001-06-29 2009-06-02 Kva, Inc. Method for controlling weld metal microstructure using localized controlled cooling of seam-welded joints
US7618503B2 (en) * 2001-06-29 2009-11-17 Mccrink Edward J Method for improving the performance of seam-welded joints using post-weld heat treatment
CA2390054C (fr) * 2002-06-28 2013-03-19 Weatherford Canada Partnership Methode de fabrication de tige de pompage en continu
EP1664356B1 (fr) * 2003-09-03 2014-12-17 Fluor Technologies Corporation Traitement thermique apres soudure pour acier inoxydable, austenitique, et stabilise chimiquement
US7371988B2 (en) * 2004-10-22 2008-05-13 Electric Power Research Institute, Inc. Methods for extending the life of alloy steel welded joints by elimination and reduction of the HAZ
US7744709B2 (en) * 2005-08-22 2010-06-29 United Technologies Corporation Welding repair method for full hoop structures
EP2446975B1 (fr) * 2010-10-29 2013-07-17 Sjm Co., Ltd. Procédé de fabrication d'un dispositif de tuyau flexible pour système de gaz d'échappement d'un véhicule à moteur
US9840752B2 (en) * 2014-05-27 2017-12-12 Keystone Engineering Company Method and apparatus for performing a localized post-weld heat treatment on a thin wall metallic cylinder
US10500672B2 (en) * 2015-02-04 2019-12-10 Fisher Controls International Llc Methods and apparatus for welding work pieces having dissimilar compositions
CN111032889B (zh) * 2017-08-16 2022-04-08 玛特森技术公司 闭合形状工件的热加工
KR20200064661A (ko) * 2018-11-29 2020-06-08 주식회사 포스코 국부 열처리 시스템 및 이를 이용한 냉간 성형 방법

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
FR1409114A (fr) * 1963-09-27 1965-08-20 Elin Union Ag Procédé de traitement d'aciers à structure stable
US3731051A (en) * 1971-03-26 1973-05-01 R Ellersick Articulated radiant heating modules
US4142713A (en) * 1974-11-26 1979-03-06 Nippon Steel Corporation Method of heat-treatment of welded pipe and apparatus therefor
US4154629A (en) * 1975-12-23 1979-05-15 Kabushiki-Kaisha Fujikoshi Process of case hardening martensitic stainless steels
US4168190A (en) * 1976-04-27 1979-09-18 Daiichi Koshuha Kogyo Kabushiki Kaisha Method for locally solution-treating stainless material

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4188419A (en) * 1971-02-12 1980-02-12 Licentia Patent-Verwaltungs-G.M.B.H. Method for preventing cracks below seams during plating and welding
SU834156A1 (ru) * 1979-06-06 1981-06-06 Ивановский Химико-Технологическийинститут Способ обработки сварных изделийиз АуСТЕНиТНыХ КОРРОзиОННОСТОйКиХСТАлЕй
JPS5884925A (ja) * 1981-11-13 1983-05-21 Kawasaki Steel Corp 電縫鋼管の熱処理方法
JPS59153841A (ja) * 1983-02-23 1984-09-01 Nippon Steel Corp 一様な強度を有する高張力電縫鋼管の製造方法
JPS60238423A (ja) * 1984-05-10 1985-11-27 Nippon Kokan Kk <Nkk> 二相系ステンレス鋼の溶接部の耐食性改善方法
JPS60106921A (ja) * 1984-07-09 1985-06-12 Hitachi Ltd オ−ステナイト系ステンレス鋼の溶体化処理法

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
FR1409114A (fr) * 1963-09-27 1965-08-20 Elin Union Ag Procédé de traitement d'aciers à structure stable
US3731051A (en) * 1971-03-26 1973-05-01 R Ellersick Articulated radiant heating modules
US4142713A (en) * 1974-11-26 1979-03-06 Nippon Steel Corporation Method of heat-treatment of welded pipe and apparatus therefor
US4154629A (en) * 1975-12-23 1979-05-15 Kabushiki-Kaisha Fujikoshi Process of case hardening martensitic stainless steels
US4168190A (en) * 1976-04-27 1979-09-18 Daiichi Koshuha Kogyo Kabushiki Kaisha Method for locally solution-treating stainless material

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
METAL SCIENCE & HEAT TREATMENT, Band 18, Nr. 9-10, September-Oktober 1976, Seiten 900-902, New York, US; O.S. VIL'YAMS et al.: "Heating of stainless-steel pipes in dissociated ammonia" *
PATENT ABSTRACTS OF JAPAN, Band 2, Nr. 38, Seite 4622C77, 14. März 1978; & JP-A-52 139 615 (HITACHI SEISAKUSHO K.K.) 21-11-1977 *
PATENT ABSTRACTS OF JAPAN, Band 4, Nr. 89, (C-16)[571], 25. Juni 1980; & JP-A-55 54 524 (HITACHI SEISAKUSHO K.K.) 21-04-1980 *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0322758A1 (fr) * 1987-12-24 1989-07-05 Schoeller Werk GmbH &amp; Co KG Procédé et dispositif pour le traitement thermique du joint soudé de tubes métalliques soudés longitudinalement
US5022936A (en) * 1988-12-07 1991-06-11 Hitachi, Ltd. Method for improving property of weld of austenitic stainless steel
EP0394754A2 (fr) * 1989-04-27 1990-10-31 Siemens Aktiengesellschaft Procédé et dispositif pour le traitement thermique sélectif de la zone d'un cordon de soudure d'un tube soudé longitudinalement
EP0394754A3 (fr) * 1989-04-27 1992-10-14 Siemens Aktiengesellschaft Procédé et dispositif pour le traitement thermique sélectif de la zone d'un cordon de soudure d'un tube soudé longitudinalement
EP2019149A1 (fr) 2007-07-19 2009-01-28 United Technologies Corporation Appareil et procédé de traitement thermique localisé pour composants métalliques
US7977611B2 (en) 2007-07-19 2011-07-12 United Technologies Corporation Systems and methods for providing localized heat treatment of metal components
DE102022105659A1 (de) 2022-03-10 2023-09-14 Vdm Metals International Gmbh Verfahren zur Herstellung eines mit Schweißnähten versehenen Bauteils aus einer Nickel-Chrom-Aluminium-Legierung
WO2023169629A1 (fr) 2022-03-10 2023-09-14 Vdm Metals International Gmbh Procédé de fabrication d'un composant en alliage nickel-chrome-aluminium pourvu de joints de soudure
WO2023169628A1 (fr) 2022-03-10 2023-09-14 Vdm Metals International Gmbh Procédé de fabrication d'un composant à partir du produit semi-fini d'un alliage nickel-chrome-aluminium
DE102022105658A1 (de) 2022-03-10 2023-09-14 Vdm Metals International Gmbh Verfahren zur Herstellung eines Bauteils aus dem Halbzeug einer Nickel-Chrom-Aluminium-Legierung

Also Published As

Publication number Publication date
EP0234200B1 (fr) 1990-12-05
JPS62180016A (ja) 1987-08-07
DE3766507D1 (de) 1991-01-17
JP2668870B2 (ja) 1997-10-27
BR8700234A (pt) 1987-12-01
US4975128A (en) 1990-12-04

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