SE9701239L - Ways to develop residual stress in stainless steel and nickel-based hot-strength alloys and repair of stress corrosion caused by cracking underwater - Google Patents

Ways to develop residual stress in stainless steel and nickel-based hot-strength alloys and repair of stress corrosion caused by cracking underwater

Info

Publication number
SE9701239L
SE9701239L SE9701239A SE9701239A SE9701239L SE 9701239 L SE9701239 L SE 9701239L SE 9701239 A SE9701239 A SE 9701239A SE 9701239 A SE9701239 A SE 9701239A SE 9701239 L SE9701239 L SE 9701239L
Authority
SE
Sweden
Prior art keywords
repair
nickel
underwater
cracking
ways
Prior art date
Application number
SE9701239A
Other languages
Swedish (sv)
Other versions
SE9701239D0 (en
SE524744C2 (en
Inventor
Harvey Donald Solomon
Raymond Alan White
Jr Robert Anthony Fusaro
Original Assignee
Gen Electric
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 US08/629,290 external-priority patent/US5719369A/en
Priority claimed from US08/629,669 external-priority patent/US5710405A/en
Application filed by Gen Electric filed Critical Gen Electric
Publication of SE9701239D0 publication Critical patent/SE9701239D0/en
Publication of SE9701239L publication Critical patent/SE9701239L/en
Publication of SE524744C2 publication Critical patent/SE524744C2/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K10/00—Welding or cutting by means of a plasma
    • B23K10/02—Plasma welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/0061—Underwater arc welding
    • 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
    • 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

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Arc Welding In General (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

The method concerns development of compressive residual stresses in corrosion resistant steels and superalloys on nickel basis. It consists of producing a bath of molten metal, cooling the bath to build a metallurgical bond with adjoining solid metal, and quenching the bonded metal to the temperature of the surroundings below the melting zone of the metal through contact with a quenching medium. Also claimed are a method for repair of damage caused stress corrosion cracks, and a corresponding apparatus.
SE9701239A 1996-04-08 1997-04-04 Ways to weld underwater to develop residual compressive stresses in stainless steel and nickel-based hot-strength alloys and methods and apparatus to repair cracks due to stress corrosion by this method SE524744C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/629,290 US5719369A (en) 1996-04-08 1996-04-08 Stress corrosion crack repair by plasma arc welding underwater welding
US08/629,669 US5710405A (en) 1996-04-09 1996-04-09 Method for developing residual compressive stress in stainless steel and nickel base superalloys

Publications (3)

Publication Number Publication Date
SE9701239D0 SE9701239D0 (en) 1997-04-04
SE9701239L true SE9701239L (en) 1997-10-09
SE524744C2 SE524744C2 (en) 2004-09-28

Family

ID=27090896

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9701239A SE524744C2 (en) 1996-04-08 1997-04-04 Ways to weld underwater to develop residual compressive stresses in stainless steel and nickel-based hot-strength alloys and methods and apparatus to repair cracks due to stress corrosion by this method

Country Status (3)

Country Link
JP (1) JP4317598B2 (en)
DE (1) DE19713701B4 (en)
SE (1) SE524744C2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6255616B1 (en) * 2000-01-14 2001-07-03 General Electric Company Apparatus and methods for submerged processing of a work surface
US9101997B2 (en) * 2008-09-11 2015-08-11 Siemens Energy, Inc Asymmetric heat sink welding using a penetration enhancing compound
DE102008056983B3 (en) * 2008-11-12 2010-04-29 Tbi Industries Gmbh Underwater welding system
DE102014105941A1 (en) 2013-05-27 2014-11-27 Scansonic Mi Gmbh Laser beam welding process for the reduction of thermo-mechanical stresses

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3898418A (en) 1972-03-10 1975-08-05 Nat Res Inst Metals Method of welding metals under water
GB1511836A (en) 1974-06-10 1978-05-24 Boc International Ltd Underwater welding
GB1539917A (en) 1976-03-08 1979-02-07 Boc Ltd Methods of arc welding in a super-atmospheric environment
DE2942868C2 (en) 1979-10-24 1981-11-05 Blohm + Voss Ag, 2000 Hamburg Device for local cooling of the welding zone in front of and / or still the respective welding point by means of fluid and / or gaseous media
DE3420376A1 (en) 1984-06-01 1985-12-05 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 4200 Oberhausen METHOD FOR COOLING WELDED WORKPIECE SURFACES BEFORE AND / OR AFTER THE WELDING POINT BY MEANS OF A WATER-AIR MIXTURE AND DEVICE FOR CARRYING OUT THE METHOD

Also Published As

Publication number Publication date
JP4317598B2 (en) 2009-08-19
JPH1034374A (en) 1998-02-10
SE9701239D0 (en) 1997-04-04
DE19713701A1 (en) 1997-10-30
SE524744C2 (en) 2004-09-28
DE19713701B4 (en) 2018-08-09

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