FR2394358A1 - Resistance welding steel bars to mfr. grids - using sensors to measure electrode pressure and displacement and the welding current - Google Patents

Resistance welding steel bars to mfr. grids - using sensors to measure electrode pressure and displacement and the welding current

Info

Publication number
FR2394358A1
FR2394358A1 FR7819058A FR7819058A FR2394358A1 FR 2394358 A1 FR2394358 A1 FR 2394358A1 FR 7819058 A FR7819058 A FR 7819058A FR 7819058 A FR7819058 A FR 7819058A FR 2394358 A1 FR2394358 A1 FR 2394358A1
Authority
FR
France
Prior art keywords
sensors
displacement
welding
electrodes
steel bars
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.)
Granted
Application number
FR7819058A
Other languages
French (fr)
Other versions
FR2394358B1 (en
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.)
Centre de Recherches Metallurgiques CRM ASBL
Original Assignee
Centre de Recherches Metallurgiques CRM ASBL
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 Centre de Recherches Metallurgiques CRM ASBL filed Critical Centre de Recherches Metallurgiques CRM ASBL
Publication of FR2394358A1 publication Critical patent/FR2394358A1/en
Application granted granted Critical
Publication of FR2394358B1 publication Critical patent/FR2394358B1/fr
Granted 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
    • B23K11/24—Electric supply or control circuits therefor
    • B23K11/25—Monitoring devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)

Abstract

This is an addn. to 839697, which described appts. for controlling electrode pressure and displacement, and electrical energy, in the welding of steel prods. In the present invention, the sensors consists of (a) a toroid placed on the bridges connecting the upper electrodes in pairs and measuring electrical energy; (b) a load cell is located above a compression spring in each electrode holder and used to measure the pressure exerted on two upper and two lower electrodes; (c) two gauges are formed by a pair of dummy electrodes through which no welding current flows, the movement of the gauges indicating the displacement of the actual welding electrodes. The prods. being welded are pred. steel bars, e.g. forming a grid or trellis, where sensors(c)measures the penetration of the bars into each other. Load cell(b) is pref. located in a plug used to clamp each spring, esp. a plug with a graduated scale used to calibrate the spring. Improvements to the main patent so the sensors do not interfere with the welding zone.
FR7819058A 1977-06-16 1978-06-15 Resistance welding steel bars to mfr. grids - using sensors to measure electrode pressure and displacement and the welding current Granted FR2394358A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE855774 1977-06-16

Publications (2)

Publication Number Publication Date
FR2394358A1 true FR2394358A1 (en) 1979-01-12
FR2394358B1 FR2394358B1 (en) 1985-02-22

Family

ID=3861551

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7819058A Granted FR2394358A1 (en) 1977-06-16 1978-06-15 Resistance welding steel bars to mfr. grids - using sensors to measure electrode pressure and displacement and the welding current

Country Status (2)

Country Link
FR (1) FR2394358A1 (en)
LU (1) LU79818A1 (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE520970A (en) *
US3140383A (en) * 1961-08-08 1964-07-07 Frank J Bauer Spot welder
FR1394179A (en) * 1964-02-18 1965-04-02 Renault Mode and control device on automatic welding machine
DE1951989A1 (en) * 1968-10-24 1970-04-30 Fritz Schuetz Procedure for operational monitoring of a resistance point, seam or projection welding machine
DE2127988A1 (en) * 1971-06-05 1972-12-14 Tsnii Automatic butt welding control - with displacement pickup signals corrected for welding current fluctuations
FR2142204A5 (en) * 1971-06-16 1973-01-26 Ts N Automatic butt welding control - with displacement pickup signals corrected for welding current fluctuations
FR2244987A1 (en) * 1973-09-20 1975-04-18 Taschler Bernard Continuous weld quality control monitor - by infra-red radiation detector output signal compared with desired reference signal
BE839697A (en) * 1976-03-17 1976-07-16 Centre Rech Metallurgique DEVICE FOR THE CONTROL OF THE WELDING OF STEEL PRODUCTS

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE520970A (en) *
US3140383A (en) * 1961-08-08 1964-07-07 Frank J Bauer Spot welder
FR1394179A (en) * 1964-02-18 1965-04-02 Renault Mode and control device on automatic welding machine
DE1951989A1 (en) * 1968-10-24 1970-04-30 Fritz Schuetz Procedure for operational monitoring of a resistance point, seam or projection welding machine
CH490155A (en) * 1968-10-24 1970-05-15 Schuetz Fritz Process for the operational monitoring of a resistance point, seam or projection welding machine
FR2021508A1 (en) * 1968-10-24 1970-07-24 Schutz Fritz Resistance spor, seam or lap welder control
DE2127988A1 (en) * 1971-06-05 1972-12-14 Tsnii Automatic butt welding control - with displacement pickup signals corrected for welding current fluctuations
FR2142204A5 (en) * 1971-06-16 1973-01-26 Ts N Automatic butt welding control - with displacement pickup signals corrected for welding current fluctuations
FR2244987A1 (en) * 1973-09-20 1975-04-18 Taschler Bernard Continuous weld quality control monitor - by infra-red radiation detector output signal compared with desired reference signal
BE839697A (en) * 1976-03-17 1976-07-16 Centre Rech Metallurgique DEVICE FOR THE CONTROL OF THE WELDING OF STEEL PRODUCTS

Also Published As

Publication number Publication date
LU79818A1 (en) 1978-12-07
FR2394358B1 (en) 1985-02-22

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Legal Events

Date Code Title Description
ST Notification of lapse