JPS57156880A - Heat input controlling method of electric welded tube - Google Patents

Heat input controlling method of electric welded tube

Info

Publication number
JPS57156880A
JPS57156880A JP4374081A JP4374081A JPS57156880A JP S57156880 A JPS57156880 A JP S57156880A JP 4374081 A JP4374081 A JP 4374081A JP 4374081 A JP4374081 A JP 4374081A JP S57156880 A JPS57156880 A JP S57156880A
Authority
JP
Japan
Prior art keywords
output
deviation
current
amplifier
terminal
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
JP4374081A
Other languages
Japanese (ja)
Other versions
JPS6012158B2 (en
Inventor
Masahiro Takahashi
Chiharu Takamadate
Hiroshi Suwada
Yoshiyasu Kitagawa
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.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal Industries 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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP4374081A priority Critical patent/JPS6012158B2/en
Publication of JPS57156880A publication Critical patent/JPS57156880A/en
Publication of JPS6012158B2 publication Critical patent/JPS6012158B2/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
    • B23K13/00—Welding by high-frequency current heating
    • B23K13/01—Welding by high-frequency current heating by induction heating
    • B23K13/02—Seam welding

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Induction Heating (AREA)
  • Arc Welding Control (AREA)

Abstract

PURPOSE:To control an electric welded tube which is excellent in its response property, high in its control accuracy and strong against outer disturbance, by compositely monitoring a welding point temperature and a welding current. CONSTITUTION:A computer 23 operates an optimum welding point temperature by inputting size of a tube, a tube manufacturing speed, etc., and provides it to a terminal of a differential amplifier 24 as a set reference value. An output of a thermometer 22 is inputted to the other terminal of the differential amplifier 24. The amplifier 24 outputs a signal corresponding to a deviation of the set reference value and an actual measurement value of temperature. The output of the amplifier 24 is contents corresponding to a secondary current of an output transformer 15 which is capable of setting its deviation to zero, and is provided to the terminal of a differential amplifier 26. The output of the amplifier 26 is a signal corresponding to a current deviation of a current value which is capable of removing a temperature deviation, and an actual measurement value of the secondary current, its output signal is applied to a phase device 20, and the phase device 20 changed and controls a conducting phase angle of a thyristor of an output controlling circuit 12 in the direction for setting the current deviation to zero.
JP4374081A 1981-03-24 1981-03-24 Heat input control method for ERW pipes Expired JPS6012158B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4374081A JPS6012158B2 (en) 1981-03-24 1981-03-24 Heat input control method for ERW pipes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4374081A JPS6012158B2 (en) 1981-03-24 1981-03-24 Heat input control method for ERW pipes

Publications (2)

Publication Number Publication Date
JPS57156880A true JPS57156880A (en) 1982-09-28
JPS6012158B2 JPS6012158B2 (en) 1985-03-30

Family

ID=12672166

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4374081A Expired JPS6012158B2 (en) 1981-03-24 1981-03-24 Heat input control method for ERW pipes

Country Status (1)

Country Link
JP (1) JPS6012158B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111570963A (en) * 2020-04-14 2020-08-25 深圳欣旺达智能科技有限公司 Hot-press welding method and device, computer equipment and storage medium

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111570963A (en) * 2020-04-14 2020-08-25 深圳欣旺达智能科技有限公司 Hot-press welding method and device, computer equipment and storage medium

Also Published As

Publication number Publication date
JPS6012158B2 (en) 1985-03-30

Similar Documents

Publication Publication Date Title
US2310955A (en) System of measurement and/or control
US3585267A (en) Electronic circuits for temperature control
JPS5534854A (en) Controlling method of secondary winding-exciting motor
CA1270302A (en) Heating power measuring method
US3389239A (en) Method and means for testing welding equipment
US2727969A (en) Welding apparatus
US2874906A (en) Control apparatus with process analog
JPS57156880A (en) Heat input controlling method of electric welded tube
US2367868A (en) Measuring apparatus
US4296305A (en) Machine for continuous flash butt welding
GB1285103A (en) Electrical measurement converter based on the two-wire principle
US3526272A (en) Servo temperature control
US3012126A (en) Temperature control system
US2482064A (en) Antihunt electrical measuring and controlling system
US2623206A (en) Control system
US2866064A (en) Temperature controlled heating system
JPS57195587A (en) Method and device for controlling automatic welding of high frequency electric resistance welded pipe
JPS5756182A (en) Method for controlling welding input of lectric welded tube
JPS5588988A (en) Ultrasonic detecting device for resistance welding
JPS57117002A (en) Automatic setting circuit
JPS5775731A (en) Discharge processing condition setting device
SU712212A1 (en) Automatic regulator of tool to work surface spacing
JPS568562A (en) Measuring device for reactance change
GB915354A (en) Circuits for the generation of servo system signals
JPS5745601A (en) Temperature controlling method for electric furnace