JPS5538943A - Locally annealing method for welded structure - Google Patents

Locally annealing method for welded structure

Info

Publication number
JPS5538943A
JPS5538943A JP11077578A JP11077578A JPS5538943A JP S5538943 A JPS5538943 A JP S5538943A JP 11077578 A JP11077578 A JP 11077578A JP 11077578 A JP11077578 A JP 11077578A JP S5538943 A JPS5538943 A JP S5538943A
Authority
JP
Japan
Prior art keywords
heating
welded structure
zone
chamber
elements
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
JP11077578A
Other languages
Japanese (ja)
Other versions
JPS5952213B2 (en
Inventor
Shoji Morita
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP11077578A priority Critical patent/JPS5952213B2/en
Publication of JPS5538943A publication Critical patent/JPS5538943A/en
Publication of JPS5952213B2 publication Critical patent/JPS5952213B2/en
Expired legal-status Critical Current

Links

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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
    • C21D1/30—Stress-relieving
    • 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

Abstract

PURPOSE:To relieve the residual stress of a cylindrical welded structure by simultaneously heating the outsides of structure parts apart from a heating chamber to make a temp. gradient gentle in local annealing of the structure by an internally heating method. CONSTITUTION:In local annealing of weld zone 3 between lower barrel 1 and upper barrel 2 of a cylindrical welded structure, both sides of zone 3 are partitioned with partition walls 6, 7, and inner heating elements 4 are set to form a heating chamber. On the other hand, the outsides of barrels 1, 2 are provided with outer heating elements 9 at positions apart from the chamber and covered with heat insulating material 5a. Zone 3 is annealed by being simultaneously heated with elements 4, 9.
JP11077578A 1978-09-11 1978-09-11 Local annealing method for welded structures Expired JPS5952213B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11077578A JPS5952213B2 (en) 1978-09-11 1978-09-11 Local annealing method for welded structures

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11077578A JPS5952213B2 (en) 1978-09-11 1978-09-11 Local annealing method for welded structures

Publications (2)

Publication Number Publication Date
JPS5538943A true JPS5538943A (en) 1980-03-18
JPS5952213B2 JPS5952213B2 (en) 1984-12-18

Family

ID=14544272

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11077578A Expired JPS5952213B2 (en) 1978-09-11 1978-09-11 Local annealing method for welded structures

Country Status (1)

Country Link
JP (1) JPS5952213B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104357622A (en) * 2014-11-10 2015-02-18 沈阳黎明航空发动机(集团)有限责任公司 Local softening method of high-strength alloy steel carburized parts
WO2015029095A1 (en) * 2013-08-26 2015-03-05 株式会社日立製作所 Method and apparatus for heat-treating welded structure
CN110373525A (en) * 2019-08-29 2019-10-25 中国石油大学(华东) A kind of large pressurized vessel topical treatment process optimization and temperature automatically controlled method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6329846B2 (en) * 2014-08-12 2018-05-23 三菱日立パワーシステムズ株式会社 Pipe heat treatment method and apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015029095A1 (en) * 2013-08-26 2015-03-05 株式会社日立製作所 Method and apparatus for heat-treating welded structure
CN104357622A (en) * 2014-11-10 2015-02-18 沈阳黎明航空发动机(集团)有限责任公司 Local softening method of high-strength alloy steel carburized parts
CN110373525A (en) * 2019-08-29 2019-10-25 中国石油大学(华东) A kind of large pressurized vessel topical treatment process optimization and temperature automatically controlled method

Also Published As

Publication number Publication date
JPS5952213B2 (en) 1984-12-18

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