Jul 10, 2021 · Also known as tungsten inert gas arc welding, is the use of tungsten and workpiece between the formation of arc generated a lot of heat to melt the place to be welded, plus filler wire to obtain a solid welding joint. Argon arc welding aluminum is to use its cathode atomization characteristics to remove the oxide film.
The aluminum and aluminum alloy sheet can adopt the tungsten electrode alternating current argon arc welding or the tungsten electrode pulse argon arc welding. Tungsten helium arc welding, argon helium mixed tungsten arc welding, gas metal arc welding and pulse metal arc welding can be used for aluminum and aluminum alloy thick plate. CN111151834A - Brazing repair method for local leakage of The invention discloses a rapid brazing repair method for local leakage of a vacuum brazing aluminum plate-fin heat exchanger core, and belongs to the technical field of aluminum alloy welding. The method adopts the traditional oxyacetylene brazing and is matched with the pasty aluminum alloy brazing filler metal to be applied to the repair of the local leakage of the core body of the plate
Main points of welding technology of heat exchanger tube sheet. This material is generally used with a purity of 99.99% argon. The tube sheet and tube holes can be cleaned with acetone or carbon tetrachloride. short arc welding to obtain a narrower weld bead, which lays a good foundation for the second pass. In the second pass, in order CN101782341A - Aluminum plate-fin type heat exchanger The invention discloses an aluminum plate-fin type heat exchanger and a vacuum braze welding process method thereof, which comprises a structure of the aluminum plate-fin type heat exchanger and the vacuum braze welding process method. The invention uses a dislocated rectangular fin to substitute for a triangular fin structure in a high-temperature fluid medium passage.
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