GB1186735A - Automatic Arc Length Control - Google Patents

Automatic Arc Length Control

Info

Publication number
GB1186735A
GB1186735A GB2891667A GB2891667A GB1186735A GB 1186735 A GB1186735 A GB 1186735A GB 2891667 A GB2891667 A GB 2891667A GB 2891667 A GB2891667 A GB 2891667A GB 1186735 A GB1186735 A GB 1186735A
Authority
GB
United Kingdom
Prior art keywords
arc
current
control
voltage
automatic
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
GB2891667A
Inventor
Evans H Daggett
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.)
Airco Inc
Original Assignee
Air Reduction Co Inc
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 Air Reduction Co Inc filed Critical Air Reduction Co Inc
Publication of GB1186735A publication Critical patent/GB1186735A/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
    • B23K9/06—Arrangements or circuits for starting the arc, e.g. by generating ignition voltage, or for stabilising the arc
    • B23K9/073—Stabilising the arc
    • B23K9/0735—Stabilising of the arc length

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Arc Welding Control (AREA)

Abstract

1,186,735. Automatic control systems for arc welding. AIR REDUCTION CO. Inc. June 22, 1967 [June 30, 1966], No.28916/67. Heading G3R. A control system for arc welding equipment using a non-consumable electrode provides an unvarying control signal to the arc length control equipment so long as a predetermined relationship is maintained between arc voltage and at least one other arc parameter, the control signal being obtained from simultaneous and continuous input signals. In the D. C. system shown, the arc length is made independent of changes in arc current by feeding to the automatic voltage control device 64, which controls the position of electrode 52 through a conventional adjusting means 56, signals representative of arc voltage and arc current which are opposed to one another and which provide a substantially constant resultant input to the device 64 over a desired operating range of arc currents. The Specification gives typical values of the resistor R and current ratio k of saturable inductors 58, 60 suitable to provide the required compensation of the two signals over the desired range, operation of the system for changes in arc current and/or arc voltage being discussed, Fig. 1 (not shown). The operation of the current signalproducing circuit comprising members 58, 60, 70, 74 is also described. In another arrangement, Fig. 3 (not shown), the current signal-producing circuit comprises a resistor (R) connected in the electrode-workpiece circuit and supplying an inverting amplifier (80) whose output, together with the arc voltage signal, is supplied to the automatic voltage control device. The invention may be applied to an A. C. welding system and to systems wherein the device for adjusting the arc length is of the automatic current control type, e.g. when the arc length varies more rapidly with changing arc current than with changing arc voltage. Compensation for parameters other than arc current may be achieved by providing for the arc length adjusting device additional control signals representative of these parameters.
GB2891667A 1966-06-30 1967-06-22 Automatic Arc Length Control Expired GB1186735A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US56201566A 1966-06-30 1966-06-30

Publications (1)

Publication Number Publication Date
GB1186735A true GB1186735A (en) 1970-04-02

Family

ID=24244451

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2891667A Expired GB1186735A (en) 1966-06-30 1967-06-22 Automatic Arc Length Control

Country Status (4)

Country Link
BE (1) BE700576A (en)
DE (1) DE1615100A1 (en)
GB (1) GB1186735A (en)
SE (1) SE347892B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0003830A1 (en) * 1978-02-25 1979-09-05 Industrie-Werke Karlsruhe Augsburg Aktiengesellschaft Process for arc welding

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0003830A1 (en) * 1978-02-25 1979-09-05 Industrie-Werke Karlsruhe Augsburg Aktiengesellschaft Process for arc welding

Also Published As

Publication number Publication date
DE1615100A1 (en) 1971-10-07
BE700576A (en) 1967-12-01
SE347892B (en) 1972-08-21

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees