FIELD: metallurgy.
SUBSTANCE: firing pulse is generated by power accumulated in arc power source inductor when circuit current exceeds holding current. For this, prior to feeding firing pulse to arc gap parallel with arc power source output terminals, control switch is cut on to short-circuit arc power source circuit. Current is allowed to up to holding current. Controlled switch is cut off to allow pulse transformer primary current is changed over to charging of reservoir capacitor. Voltage induced in pulse transformer secondary is applied to electrode gap to break it down for initial ionization of arc gap. Now welding circuit is closed.
EFFECT: higher quality of weld joint, decreased weight and sizes, decreased labor input, higher safety.
3 cl, 5 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF WELDING CURRENT PULSE GENERATION AND DEVICE TO THIS END | 2012 |
|
RU2498885C2 |
| METHOD OF CONTROLLING ARC WELDING BY NONCONSUMABLE ELECTRODE IN ATMOSPHERE OF PROTECTIVE GASES AND DEVICE TO THIS END | 2011 |
|
RU2481929C2 |
| METHOD OF EXCITATION OF AC WELDING ARC AND DEVICE FOR ITS ACCOMPLISHMENT | 1993 |
|
RU2065344C1 |
| METHOD AND APPARATUS FOR EXCITING ELECTRIC ARC | 0 |
|
SU1613263A1 |
| DEVICE FOR EXCITATION AND STABILIZATION OF BURNING OF WELDING ARC | 1996 |
|
RU2106944C1 |
| AC-WELDING APPARATUS | 2004 |
|
RU2249497C1 |
| APPARATUS FOR EXCITING ALTERNATING ELECTRIC CURRENT ARC | 1999 |
|
RU2173618C2 |
| 0 |
|
SU437584A1 | |
| POWER SOURCE OF ARC WELDING | 2004 |
|
RU2284884C2 |
| THYRISTOR POWER SUPPLY FOR ARC WELDING | 2010 |
|
RU2449868C2 |
