GB665360A - Improvements in or relating to electric welding - Google Patents

Improvements in or relating to electric welding

Info

Publication number
GB665360A
GB665360A GB30400/48A GB3040048A GB665360A GB 665360 A GB665360 A GB 665360A GB 30400/48 A GB30400/48 A GB 30400/48A GB 3040048 A GB3040048 A GB 3040048A GB 665360 A GB665360 A GB 665360A
Authority
GB
United Kingdom
Prior art keywords
welding
work
initial pressure
armature
electromagnet
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
GB30400/48A
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.)
Cutler Hammer Europe Ltd
Original Assignee
Igranic Electric Co 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 Igranic Electric Co Ltd filed Critical Igranic Electric Co Ltd
Publication of GB665360A publication Critical patent/GB665360A/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
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/10—Spot welding; Stitch welding
    • B23K11/11—Spot 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
    • B23K11/00—Resistance welding; Severing by resistance heating
    • B23K11/24—Electric supply or control circuits therefor
    • B23K11/241—Electric supplies

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Resistance Welding (AREA)

Abstract

665,360. Electric welding. IGRANIC ELECTRIC CO., Ltd. Nov. 23, 1948 [Dec. 6, 1947], No. 30400/48. Class 83 (iv). In a method of welding by the application of pressure to the work and by the passage of an electric welding current through the work, the pressure is obtained heat least in part from t force of an electromagnet through the winding of which some or all of the welding current is fed. The work 12a is arranged between a lower stationary welding-electrode 10 and a co-operating upper electrode 11, insulated from and carried on, a supporting lever hinged to the frame 13. The lever forms an armature for an electromagnet 14. Part of the unbalanced weight of the armature 15 may be counterbalanced by means of a spring (not shown) or other means when it is desired to limit the initial pressure of the movable electrode on the work. When it is desired to increase the initial pressure the magnet may be provided with a supplemental biasing coil (not shown). Current is supplied to the electrodes by a transformer 16, the connection from the secondary winding thereof to the stationary electrode being through an energizing winding 18 for the magnet hole 19. An adjustable impedance 20 may, if desired, be used to shunt the energizing winding 18. In welding a slight initial pressure is exerted upon the work parts 12, 12a, by the unbalanced weight of the armature, which may be augmented by a hand or foot lever connected to the armature 15; thereupon, the welding- transformer is energized so that the adjacent work faces are caused to melt and simultaneously a flux is produced in the electromagnet which pulls the movable electrode 11 towards the stationary electrode 10 and increases the degree of completeness of contact between the parts to be welded. Primary circuits for the transformer are described utilizing an alternating current source and also a simpler circuit with a battery and capacitor. The electromagnet may also be arranged to oppose the initial pressure where a relatively high initial pressure to be subsequently reduced is required.
GB30400/48A 1947-12-06 1948-11-23 Improvements in or relating to electric welding Expired GB665360A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US665360XA 1947-12-06 1947-12-06

Publications (1)

Publication Number Publication Date
GB665360A true GB665360A (en) 1952-01-23

Family

ID=22070135

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30400/48A Expired GB665360A (en) 1947-12-06 1948-11-23 Improvements in or relating to electric welding

Country Status (1)

Country Link
GB (1) GB665360A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005075139A1 (en) * 2004-02-05 2005-08-18 Abb Ab Spot weld gun

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005075139A1 (en) * 2004-02-05 2005-08-18 Abb Ab Spot weld gun

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