FIELD: gas shield welding, mainly by means of non-consumable electrode, possibly for making welded structures of aluminum and its alloys.
SUBSTANCE: method for electric arc gas-shield DC welding with use of direct polarity of direct current comprises steps of cyclically applying short-period electric current pulses of reverse polarity to arc gap. Said pulses are fed from generator connected in parallel relative to main DC source. Voltage of said pulse is no less than 200 V; width τ p of pulses is selected according to relation τp ≥ (60 - 0.05f)/f x 10-3 where f - frequency of pulses.
EFFECT: enhanced quality of cleaning welded surface from refractory oxides, improved mechanical properties of welded joints.
1 tbl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| WELDING METHOD BY COMBINATION OF COMPRESSED AND FREE ARCS | 2021 |
|
RU2763808C1 |
| METHOD FOR PLASMA SURFACING AND WELDING BY COMBINATION OF ARCS | 2021 |
|
RU2763912C1 |
| METHOD OF ARC TWO-ELECTRODE MECHANIZED WELDING | 2019 |
|
RU2724759C1 |
| METHOD OF ARC WELDING OF ALUMINIUM ALLOYS WITH COMBINATION OF NON-CONSUMABLE AND CONSUMABLE ELECTRODES | 2019 |
|
RU2739308C1 |
| NON-CONSUMABLE ELECTRODE WELDING METHOD OF ALUMINIUM AND ITS ALLOYS | 2023 |
|
RU2817683C1 |
| METHOD OF WELDING BY THREE-PHASE ARC | 2011 |
|
RU2467846C2 |
| METHOD OF ARC WELDING WITH THREE-PHASE ARC AND DEVICE FOR ARC WELDING | 2012 |
|
RU2548542C2 |
| METHOD OF ALUMINIUM ALLOYS WELDING BY COMBINATION OF ARCS | 2019 |
|
RU2728144C1 |
| METHOD OF ELECTRIC ARC SPOT WELDING | 0 |
|
SU958053A1 |
| METHOD FOR WELDING, SURFACING AND SOLDERING BY A COMBINATION OF DIRECT AND INDIRECT ARCS | 2020 |
|
RU2758357C1 |
