| 摘要 |
FIELD: machine engineering, possibly gas-shield electric arc welding by means of non-consumable electrode. ^ SUBSTANCE: method comprises steps of alternatively feeding several gases or their mixtures by pulses; at each next pulse feed using gases (gas mixtures) having ionization potentials different in comparison with those of gases or gas mixtures of previous pulse feed; periodically changing electric arc gap simultaneously with gas feed pulses; setting basic voltage of electric arc equal to optimal voltage in medium of gas or gas mixture with minimum ionization potential; setting difference between maximum and minimum voltage values of arc at periods of previous and next pulse feed of gases or gas mixtures in range 1 - 7 V. ^ EFFECT: enhanced quality of welded joints, possibility for adjusting fusion depth. ^ 1 tbl, 1 ex |
