CS271221B1 - Method of arc spot welding - Google Patents

Abstract

The solution regards arc welding with a consumable electrode and can be applied for spot-welding. In principle in this arc welding uses a consumable electrode is feed. It provides for an increased concentration of heat supply to the spot weld, reduction of the welding cycle, improvement of the joint quality, reduction of the welding material and power consumption. As suggested the consumable electrode is fixed to a power supply unit and is fed by means of shortening the free length of the electrode by shocks when the welding impulse current increases. The free length of the electrode shortens during the welding process down to min. 1% of the electrode gauge.

Description

271 221 -í -

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AND

Claims (1)

271 221 -ϋ- SUBJECT MATTER OF APPLICATION The arc spot welding method with the feed electrode inlet, where the setting electrode fastens to the current supplying device for the welding time, the arc is ignited, a spot weld is produced. then the arc is expanded and the crater is welded, characterized by. that, in order to improve the quality of welding by increasing the concentration of heat input to the spot weld, shortening the welding cycle, reducing the consumption of welding material and electric energy, the melting electrode feeds through the shortening of its free length to at least 1¾ of the electrode diameter. AND