JPS55133877A - Pulse arc welding method - Google Patents

Pulse arc welding method

Info

Publication number
JPS55133877A
JPS55133877A JP4045679A JP4045679A JPS55133877A JP S55133877 A JPS55133877 A JP S55133877A JP 4045679 A JP4045679 A JP 4045679A JP 4045679 A JP4045679 A JP 4045679A JP S55133877 A JPS55133877 A JP S55133877A
Authority
JP
Japan
Prior art keywords
voltage
circuit
output
decreases
current
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.)
Pending
Application number
JP4045679A
Other languages
Japanese (ja)
Inventor
Giichiro Shimizu
Yoshitaka Yamashita
Tsuneo Mita
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.)
Via Mechanics Ltd
Original Assignee
Hitachi Seiko 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 Hitachi Seiko Ltd filed Critical Hitachi Seiko Ltd
Priority to JP4045679A priority Critical patent/JPS55133877A/en
Publication of JPS55133877A publication Critical patent/JPS55133877A/en
Pending legal-status Critical Current

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  • Arc Welding Control (AREA)

Abstract

PURPOSE: To stabilize welding arc length and perform pulse arc welding by making the heat input quantity by the large pulse current superposed periodically on small welding current constant.
CONSTITUTION: The gate pulses which have been given phase-shift in a phase shift circuit 21 according to the specified voltage having been set 20 are applied to the gate of a full-wave rectifying circuit 18 and the AC from a transformer 17 is converted to DC voltage. This DC voltage is supplied to a wire electrode 4 by way of a capacitor 22, resistance 23, diode 2 and DC reactor 3. In this case, a switch element 24 closes at the time when the base current is made large current and is opened when it is made small currnet. When the output of the transformer 7 decreases, the output of a pulse current detector 13 decreases and the output voltage of an integrating circuit 14 decreases. In a comparator 15, the reference voltage from a constant voltage source 16 and the output voltage from the circuit 14 are compared and the differential voltage thereof is applied to a gate control circuit 11. Next, in the circuit 11, the firing phase θ of an SCR 9 is advanced according to the differential voltage input therein.
COPYRIGHT: (C)1980,JPO&Japio
JP4045679A 1979-04-04 1979-04-04 Pulse arc welding method Pending JPS55133877A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4045679A JPS55133877A (en) 1979-04-04 1979-04-04 Pulse arc welding method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4045679A JPS55133877A (en) 1979-04-04 1979-04-04 Pulse arc welding method

Publications (1)

Publication Number Publication Date
JPS55133877A true JPS55133877A (en) 1980-10-18

Family

ID=12581135

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4045679A Pending JPS55133877A (en) 1979-04-04 1979-04-04 Pulse arc welding method

Country Status (1)

Country Link
JP (1) JPS55133877A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5070249A (en) * 1973-07-04 1975-06-11
JPS5220507U (en) * 1975-07-31 1977-02-14

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5070249A (en) * 1973-07-04 1975-06-11
JPS5220507U (en) * 1975-07-31 1977-02-14

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