JPS5934866U

JPS5934866U - Power supply for pulsed arc welding

Info

Publication number: JPS5934866U
Application number: JP12782382U
Authority: JP
Inventors: 手島　秋雄; 桂大脇; 育男椎名
Original assignee: 石川島播磨重工業株式会社
Priority date: 1982-08-24
Filing date: 1982-08-24
Publication date: 1984-03-03

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図はパルスアーク溶接におけるアーク電流波形を示
す線図、第２図はこの考案の一実施例を示す回路図、第
３図は第２図の回路の各部の出力電流波形を示す線区で
、ａは端子１ａ、１ｂから得られる波形、ｂは端子２ａ
、２ｂから得られる波形、Ｃはａ、　　ｂの波形を直接
合成した場合の波形、ｄはダイオードＤ７がない場合の
出力端子１．４ａ、４ｂから得られるの波形、ｅはダイ
オードＤ７がある場合の出力端子４ａ、４ｂから得られ
る波形である。１７．１・・・バックグラウンド電流用電源、２・・・
パルス電流用電源、Ｌ１〜Ｌ５・・・電源トランス、Ｌ
６・・・相間リアクトル、Ｌ７〜Ｌ９・・・直流リアク
トル、ＴＲ１・・・スイッチング用パワートランジスタ
、３ａ、　　３ｂ・・・合成点。Fig. 1 is a line diagram showing the arc current waveform in pulsed arc welding, Fig. 2 is a circuit diagram showing an embodiment of this invention, and Fig. 3 is a line diagram showing the output current waveform of each part of the circuit in Fig. 2. where a is the waveform obtained from terminals 1a and 1b, and b is the waveform obtained from terminal 2a.
, 2b, C is the waveform obtained by directly combining the waveforms of a and b, d is the waveform obtained from output terminals 1.4a and 4b without diode D7, and e is the waveform obtained with diode D7. These are the waveforms obtained from the output terminals 4a and 4b of. 17.1...Power supply for background current, 2...
Pulse current power supply, L1 to L5...power transformer, L
6... Interphase reactor, L7-L9... DC reactor, TR1... Switching power transistor, 3a, 3b... Combination point.

Claims

[Scope of utility model registration request]

In a pulsed arc welding power source that uses a thyristor and a transistor in combination to synthesize and output a background current and a pulsed current with a frequency of 1 kHz or less, a portion of the background current power source output before the point where the pulsed current is combined with the pulsed current, A power source for pulsed arc welding, in which a capacitor is connected in parallel to the output of a power source for background current, and a rectifying element is inserted to prevent charging of the capacitor by a DC reactor and a power source for pulsed current.