GB958019A - Improvements relating to the heating of welded structures for stress relief and other purposes - Google Patents

Improvements relating to the heating of welded structures for stress relief and other purposes

Info

Publication number
GB958019A
GB958019A GB1165159A GB1165159A GB958019A GB 958019 A GB958019 A GB 958019A GB 1165159 A GB1165159 A GB 1165159A GB 1165159 A GB1165159 A GB 1165159A GB 958019 A GB958019 A GB 958019A
Authority
GB
United Kingdom
Prior art keywords
purposes
heating
stress relief
improvements relating
heating 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.)
Expired
Application number
GB1165159A
Inventor
Alfred Stanley Parker
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.)
John Thompson Ltd
Original Assignee
John Thompson 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 John Thompson Ltd filed Critical John Thompson Ltd
Priority to GB1165159A priority Critical patent/GB958019A/en
Publication of GB958019A publication Critical patent/GB958019A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/0014—Devices wherein the heating current flows through particular resistances
    • 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

Landscapes

  • 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)
  • Ceramic Products (AREA)

Abstract

<PICT:0958019/C3/1> A welded metal structure is stress-relieved on-site by temporarily mounting on the structure electric resistance heating elements in the neighbourhood of the welds, together with thermal insulation and/or reflectors to retain the heat thereabouts. Ends 1 of two pipes joined by butt welding are heated by resistance elements 8 (see Division H5) enclosed by sintered alumina cylinders 5 supported on wrappings of asbestos tape 7, the power supply to the heating elements being controlled by distributed thermocouples. Application of the method to a seam welded between two plates is also described, Fig. 3 (not shown), and numerical data on temperature gradients are given.
GB1165159A 1959-04-06 1959-04-06 Improvements relating to the heating of welded structures for stress relief and other purposes Expired GB958019A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1165159A GB958019A (en) 1959-04-06 1959-04-06 Improvements relating to the heating of welded structures for stress relief and other purposes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1165159A GB958019A (en) 1959-04-06 1959-04-06 Improvements relating to the heating of welded structures for stress relief and other purposes

Publications (1)

Publication Number Publication Date
GB958019A true GB958019A (en) 1964-05-13

Family

ID=9990178

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1165159A Expired GB958019A (en) 1959-04-06 1959-04-06 Improvements relating to the heating of welded structures for stress relief and other purposes

Country Status (1)

Country Link
GB (1) GB958019A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0452582A1 (en) * 1988-01-04 1991-10-23 Thomas M. Butler Method and apparatus for inhibiting stress corrosion cracking
CN109777943A (en) * 2019-03-14 2019-05-21 山东豪迈机械制造有限公司 A kind of annealing device and weld seam heat treatment method
CN113172386A (en) * 2021-03-30 2021-07-27 共享铸钢有限公司 Defect repairing method for large steel casting

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0452582A1 (en) * 1988-01-04 1991-10-23 Thomas M. Butler Method and apparatus for inhibiting stress corrosion cracking
CN109777943A (en) * 2019-03-14 2019-05-21 山东豪迈机械制造有限公司 A kind of annealing device and weld seam heat treatment method
CN113172386A (en) * 2021-03-30 2021-07-27 共享铸钢有限公司 Defect repairing method for large steel casting

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