GB906576A - Improvements in welding - Google Patents

Improvements in welding

Info

Publication number
GB906576A
GB906576A GB1393361A GB1393361A GB906576A GB 906576 A GB906576 A GB 906576A GB 1393361 A GB1393361 A GB 1393361A GB 1393361 A GB1393361 A GB 1393361A GB 906576 A GB906576 A GB 906576A
Authority
GB
United Kingdom
Prior art keywords
members
layers
carbon
deposited
weld
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
GB1393361A
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.)
Babcock International Ltd
Original Assignee
Babcock and Wilcox 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 Babcock and Wilcox Ltd filed Critical Babcock and Wilcox Ltd
Publication of GB906576A publication Critical patent/GB906576A/en
Expired legal-status Critical Current

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
    • B23K9/00—Arc welding or cutting
    • B23K9/23—Arc welding or cutting taking account of the properties of the materials to be welded
    • 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
    • B23K9/235—Preliminary treatment
    • 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
    • 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
    • C21D2251/00—Treating composite or clad material

Landscapes

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

Abstract

906,576. Welding by fusion. BABCOCK & WILCOX Ltd. April 18, 1961 [April 21, 1960], No. 13933/61. Class 83 (4). A weld between low alloy steel members is built up of layers of weld metal having similar mechanical characteristics to the members but with a carbon content that decreases progressively towards the centre of the weld to a value substantially less than that of the members. Members 1, 2 of a low alloy steel containing 0.25-0.3% carbon, 1.5% manganese, 0.4% chromium, 0.2% nickel balance iron are preheated to 200-250‹ C. and layers 5, 6 are deposited from an electrode containing 0.06- 0.1 % carbon and an alloy content similar to that of the members with a slight increase in the chromium or nickel or an addition of molybdenum to compensate for the reduction in carbon. The layers 5, 6 having a carbon content higher than that of the electrode owing to dilution with the metal of the members 1, 2. Layers 7, 8 and if desired 9, 10 are deposited from an electrode having less than 0.13% carbon to produce a carbon content less than that of the layers 5, 6. The welds are stress relieved. The prepared members are welded by a deposit 17 similar to the layers 9, 10 after preheating to 100-125‹ C. which can be carried out on site. The layers are deposited on the members 1, 2 using retaining plates 13, 14 and spacers 11, 12. Subsequently the spacers 11, 12 and the portions 15, 16 of the deposit adjacent the plates 13, 14 are removed.
GB1393361A 1960-04-21 1961-04-18 Improvements in welding Expired GB906576A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR824870A FR1263256A (en) 1960-04-21 1960-04-21 Improvements to weld preparation

Publications (1)

Publication Number Publication Date
GB906576A true GB906576A (en) 1962-09-26

Family

ID=8729710

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1393361A Expired GB906576A (en) 1960-04-21 1961-04-18 Improvements in welding

Country Status (2)

Country Link
FR (1) FR1263256A (en)
GB (1) GB906576A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2292107A1 (en) * 1974-11-25 1976-06-18 Alsthom Cgee Stainless steel coatings deposited by welding - on steam turbine parts, using intermediate layer to avoid hard zones (BE190576)

Also Published As

Publication number Publication date
FR1263256A (en) 1961-06-09

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