MX172237B - MECHANICAL PROCEDURE TO ELIMINATE RESIDUAL TENSIONS BY WELDING IN THE DEPOSITED METAL AREA - Google Patents

MECHANICAL PROCEDURE TO ELIMINATE RESIDUAL TENSIONS BY WELDING IN THE DEPOSITED METAL AREA

Info

Publication number
MX172237B
MX172237B MX202940A MX20294084A MX172237B MX 172237 B MX172237 B MX 172237B MX 202940 A MX202940 A MX 202940A MX 20294084 A MX20294084 A MX 20294084A MX 172237 B MX172237 B MX 172237B
Authority
MX
Mexico
Prior art keywords
welding
deposited metal
metal area
eliminate residual
mechanical procedure
Prior art date
Application number
MX202940A
Other languages
Spanish (es)
Inventor
Jan Sylvester Porowski
William James O'donnell
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 MX172237B publication Critical patent/MX172237B/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

La presente invención se refiere a un procedimiento para eliminar las tensiones residuales por soldadura en la zona del metal depositado, afectada por el calor, y en el metal de base adyacente, de tuberías soldadas; dicho procedimiento se caracteriza porque consiste en introducir mecánicamente tensiones compresivas en la zona de metal, afectada por el calor, y en el metal de base adyacente, superiores a sus límites de elasticidad individuales, pero sin exceder sus límites máximos individuales en compresión; las tensiones introducidas son suficientes para reducir permanentemente el diámetro en las porciones sometidas a compresión, usando un dispositivo de anillos cortados impulsados por un elemento exterior para la reducción permanente del diámetro.The present invention relates to a method of eliminating residual stresses by welding in the heat-affected area of the deposited metal and in the adjacent base metal of welded pipes; Said procedure is characterized in that it consists of mechanically introducing compressive stresses in the metal zone, affected by heat, and in the adjacent base metal, higher than its individual elastic limits, but without exceeding its individual maximum limits in compression; the stresses introduced are sufficient to permanently reduce the diameter in the compressed portions, using a cut ring device driven by an outer element for permanent diameter reduction.

MX202940A 1984-02-22 1984-10-03 MECHANICAL PROCEDURE TO ELIMINATE RESIDUAL TENSIONS BY WELDING IN THE DEPOSITED METAL AREA MX172237B (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
MX172237B true MX172237B (en) 1993-12-08

Family

ID=24329836

Family Applications (1)

Application Number Title Priority Date Filing Date
MX202940A MX172237B (en) 1984-02-22 1984-10-03 MECHANICAL PROCEDURE TO ELIMINATE RESIDUAL TENSIONS BY WELDING IN THE DEPOSITED METAL AREA

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
ATE463322T1 (en) 2001-11-02 2010-04-15 Boeing Co DEVICE AND METHOD FOR PRODUCING A WELDED JOINT WITH PATTERN-FORMING RESIDUAL PRESSURE STRESSES
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
FI77590B (en) 1988-12-30
GB2154492B (en) 1987-12-02
NL8403010A (en) 1985-09-16
IT8448943A0 (en) 1984-10-03
SE8500844L (en) 1985-08-23
JPS60248814A (en) 1985-12-09
FR2559697A1 (en) 1985-08-23
DE3436445A1 (en) 1985-08-22
ES8605408A1 (en) 1986-03-16
SE464136B (en) 1991-03-11
FI77590C (en) 1989-04-10
GB2154492A (en) 1985-09-11
SE8500844D0 (en) 1985-02-21
CH665655A5 (en) 1988-05-31
FI843893L (en) 1985-08-23
IT1199204B (en) 1988-12-30
FR2559697B1 (en) 1993-04-23
ES536480A0 (en) 1986-03-16
GB8424990D0 (en) 1984-11-07
FI843893A0 (en) 1984-10-03
IT8448943A1 (en) 1986-04-03

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