The distinction between ultrasonic spot welder and argon arc welding?
Mar 23, 2022
Spot welding: the weldment is pressed between two columnar electrodes, heated by electricity, so that the weldment melts at the contact to form a molten core, and then the power is cut off, and the solidification crystallization under pressure, forming a dense welding spot.
Spot welding is suitable for welding thin plate (lap joint) and steel bar below 4 mm. It is widely used in the production of automobile, aircraft, electronics, instruments and daily necessities.
Subarc welding: argon as inert gas will not react with metal, to isolate air as a protective gas. Argon arc welding is generally plasma welding. Generally, after arc welding, argon is used to cool the arc, so that the arc space becomes smaller, that is, the arc diameter becomes smaller, and the temperature changes in the arc are higher. But its arc is not direct metal contact, is from a certain distance with high voltage breakdown and then by the large current stability of the arc.
