SE8500844D0 - MECHANICAL STRESS IMPROVEMENT PROCESS - Google Patents

MECHANICAL STRESS IMPROVEMENT PROCESS

Info

Publication number
SE8500844D0
SE8500844D0 SE8500844A SE8500844A SE8500844D0 SE 8500844 D0 SE8500844 D0 SE 8500844D0 SE 8500844 A SE8500844 A SE 8500844A SE 8500844 A SE8500844 A SE 8500844A SE 8500844 D0 SE8500844 D0 SE 8500844D0
Authority
SE
Sweden
Prior art keywords
mechanical stress
improvement process
heat
adjacent base
affected zone
Prior art date
Application number
SE8500844A
Other languages
Swedish (sv)
Other versions
SE8500844L (en
SE464136B (en
Inventor
W J O'donnell
J S Porowski
Original Assignee
Odonnell & Ass
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 Odonnell & Ass filed Critical Odonnell & Ass
Publication of SE8500844D0 publication Critical patent/SE8500844D0/en
Publication of SE8500844L publication Critical patent/SE8500844L/en
Publication of SE464136B publication Critical patent/SE464136B/en

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
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
    • C21D7/10—Modifying the physical properties of iron or steel by deformation by cold working of the whole cross-section, e.g. of concrete reinforcing bars
    • C21D7/12—Modifying the physical properties of iron or steel by deformation by cold working of the whole cross-section, e.g. of concrete reinforcing bars by expanding tubular bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P9/00—Treating or finishing surfaces mechanically, with or without calibrating, primarily to resist wear or impact, e.g. smoothing or roughening turbine blades or bearings; Features of such surfaces not otherwise provided for, their treatment being unspecified
    • B23P9/02—Treating or finishing by applying pressure, e.g. knurling
    • 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
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Arc Welding In General (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Glass Compositions (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)

Abstract

Residual tensile stresses are reduced in weld metal, heat-affected zone and in the adjacent base metal of shells, piping and mechanical components by mechanically introducing compressive stresses in the weld metal, heat-affected zone and adjacent base metal higher than their yield strengths but not exceeding their individual ultimate strengths in compression. The mechanical means for introducing stress to a pipe or shell may comprise split rings.
SE8500844A 1984-02-22 1985-02-21 PROCEDURE FOR REMOVING PRESENT WELDING TENSIONS IN WELDED Pipes SE464136B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US58261784A 1984-02-22 1984-02-22

Publications (3)

Publication Number Publication Date
SE8500844D0 true SE8500844D0 (en) 1985-02-21
SE8500844L SE8500844L (en) 1985-08-23
SE464136B SE464136B (en) 1991-03-11

Family

ID=24329836

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8500844A SE464136B (en) 1984-02-22 1985-02-21 PROCEDURE FOR REMOVING PRESENT WELDING TENSIONS IN WELDED Pipes

Country Status (11)

Country Link
JP (1) JPS60248814A (en)
CH (1) CH665655A5 (en)
DE (1) DE3436445A1 (en)
ES (1) ES8605408A1 (en)
FI (1) FI77590C (en)
FR (1) FR2559697B1 (en)
GB (1) GB2154492B (en)
IT (1) IT1199204B (en)
MX (1) MX172237B (en)
NL (1) NL8403010A (en)
SE (1) SE464136B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5278878A (en) * 1992-11-13 1994-01-11 Porowski Jan S Process for reducing tensile welding stresses in a nozzle in a nuclear reactor shell
FR2744657B1 (en) * 1996-02-08 1998-03-06 Lorraine Laminage METHOD FOR PRODUCING A WHEEL FOR A MOTOR LAND VEHICLE
CA2465201C (en) 2001-11-02 2009-10-20 The Boeing Company Apparatus and method for forming weld joints having compressive residual stress patterns
US20060283919A1 (en) * 2005-06-15 2006-12-21 General Electric Company Systematic cold working of welds

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR867197A (en) * 1939-09-07 1941-10-03 Budd Edward G Mfg Co Improvements made to welding and products obtained
GB1000133A (en) * 1961-03-30 1965-08-04 Avesta Jernverks Ab A method in the manufacture of welded pressure vessels
GB1097571A (en) * 1965-03-01 1968-01-03 Atomic Energy Authority Uk Improvements in or relating to tubes
GB1235106A (en) * 1967-06-22 1971-06-09 Int Research & Dev Co Ltd Improvements in and relating to methods of treating welds to improve their mechanical properties
BE734821A (en) * 1968-07-02 1969-12-19
YU44093B (en) * 1979-01-26 1990-02-28 Energoinvest Sarajevo Method of treating connections obtained by explosive welding
GB2048146B (en) * 1979-04-25 1982-12-15 Us Energy Process for treating weldments
GB2071552A (en) * 1980-02-29 1981-09-23 Secr Defence The Treatment of Metals
JPS57145922A (en) * 1981-03-04 1982-09-09 Mitsubishi Heavy Ind Ltd Improvement of residual stress in pipe or pipe-like vessel
JPS58120722A (en) * 1982-01-11 1983-07-18 Mitsubishi Heavy Ind Ltd Improving method for residual stress of pipe or pipe-like vessel

Also Published As

Publication number Publication date
GB2154492B (en) 1987-12-02
FI843893L (en) 1985-08-23
IT8448943A1 (en) 1986-04-03
SE8500844L (en) 1985-08-23
GB8424990D0 (en) 1984-11-07
JPS60248814A (en) 1985-12-09
IT1199204B (en) 1988-12-30
NL8403010A (en) 1985-09-16
ES536480A0 (en) 1986-03-16
DE3436445A1 (en) 1985-08-22
MX172237B (en) 1993-12-08
IT8448943A0 (en) 1984-10-03
FR2559697A1 (en) 1985-08-23
SE464136B (en) 1991-03-11
GB2154492A (en) 1985-09-11
FR2559697B1 (en) 1993-04-23
FI843893A0 (en) 1984-10-03
FI77590C (en) 1989-04-10
FI77590B (en) 1988-12-30
ES8605408A1 (en) 1986-03-16
CH665655A5 (en) 1988-05-31

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