GB1281420A - Method and apparatus for fillet welding - Google Patents

Method and apparatus for fillet welding

Info

Publication number
GB1281420A
GB1281420A GB1344370A GB1344370A GB1281420A GB 1281420 A GB1281420 A GB 1281420A GB 1344370 A GB1344370 A GB 1344370A GB 1344370 A GB1344370 A GB 1344370A GB 1281420 A GB1281420 A GB 1281420A
Authority
GB
United Kingdom
Prior art keywords
electrodes
secondary windings
current
leading
trailing
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
GB1344370A
Inventor
Hirokazu Momura
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.)
JFE Engineering Corp
Original Assignee
Nippon Kokan 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 Nippon Kokan Ltd filed Critical Nippon Kokan Ltd
Priority to GB1344370A priority Critical patent/GB1281420A/en
Publication of GB1281420A publication Critical patent/GB1281420A/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
    • B23K9/0008—Welding without shielding means against the influence of the surrounding atmosphere
    • B23K9/0017—Welding without shielding means against the influence of the surrounding atmosphere using more than one electrode
    • 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
    • B23K9/10—Other electric circuits therefor; Protective circuits; Remote controls
    • B23K9/1006—Power supply
    • B23K9/1043—Power supply characterised by the electric circuit
    • B23K9/1068—Electric circuits for the supply of power to two or more arcs from a single source

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Arc Welding In General (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

1281420 Welding by fusion NIPPON KOKANKK 19 March 1970 13443/70 Heading B3R [Also in Division H2] A T-joint between substantially mutually perpendicular steel plates 11, 12 coated with primer or paint is effected by fillet welding simultaneously at both joint corners, and blow holes, piping or other defects are eliminated by supplying to a pair of leading electrodes 13 1 , 13 2 a welding current sufficient to burn the coating while depositing a preliminary weld, and supplying to at least one pair of trailing electrodes 14 1 , 14 2 a total welding current that is greater than the total leading electrode current and is sufficient to again melt the preliminary weld and disperse gaseous bodies. The leading and trailing electrode angles with the plate 11 are respectively 50-60 and 45-50 degrees. As shown, the welding current is supplied from 3-phase A.C. via a transformer 16 having delta-connected primary windings. The primary and secondary windings between terminals UV are divided, and the resulting pair of secondary windings are connected at u 1 , u 2 to the leading electrodes 13 1 , 13 2 . The undivided secondary windings between VW and WU are connected at v, w<SP>1</SP> to the trailing electrodes 14 1 , 14 2 . The terminals v 1 , v 2 , w, u of the secondary windings are star-connected to the plate 11. This circuit provides for the leading electrode current being half that of the trailing electrodes and for arc stability by minimizing the earthing current. In Fig. 8a (not shown), two pairs of trailing electrodes are connected to two pairs of secondary windings between the terminals VW and WU so that all of the three pairs of electrodes receive the same current.
GB1344370A 1970-03-19 1970-03-19 Method and apparatus for fillet welding Expired GB1281420A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1344370A GB1281420A (en) 1970-03-19 1970-03-19 Method and apparatus for fillet welding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1344370A GB1281420A (en) 1970-03-19 1970-03-19 Method and apparatus for fillet welding

Publications (1)

Publication Number Publication Date
GB1281420A true GB1281420A (en) 1972-07-12

Family

ID=10023090

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1344370A Expired GB1281420A (en) 1970-03-19 1970-03-19 Method and apparatus for fillet welding

Country Status (1)

Country Link
GB (1) GB1281420A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008008560A3 (en) * 2006-07-14 2008-06-12 Lincoln Global Inc Dual fillet welding methods and systems
US8242410B2 (en) 2006-07-14 2012-08-14 Lincoln Global, Inc. Welding methods and systems
US9095929B2 (en) 2006-07-14 2015-08-04 Lincoln Global, Inc. Dual fillet welding methods and systems
CN114669828A (en) * 2021-12-27 2022-06-28 浙江尤恩智能科技有限公司 Welding equipment for forklift gantry

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008008560A3 (en) * 2006-07-14 2008-06-12 Lincoln Global Inc Dual fillet welding methods and systems
US8242410B2 (en) 2006-07-14 2012-08-14 Lincoln Global, Inc. Welding methods and systems
US9095929B2 (en) 2006-07-14 2015-08-04 Lincoln Global, Inc. Dual fillet welding methods and systems
CN114669828A (en) * 2021-12-27 2022-06-28 浙江尤恩智能科技有限公司 Welding equipment for forklift gantry
CN114669828B (en) * 2021-12-27 2023-09-26 浙江尤恩智能科技有限公司 Fork truck portal welding equipment

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Legal Events

Date Code Title Description
49R Reference inserted (sect. 9/1949)
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee