What is double - tungsten - electrode hot wire TIG surfacing or cladding? What are its advantages?

2025-04-22 10:08:23

Twin-tungsten-electrode hot wire TIG surfacing is a more advanced welding technology developed on the basis of hot wire TIG surfacing. During the welding process, the two tungsten electrodes perform different functions. One is used to generate the main arc to melt the base metal, and the other is used to generate an auxiliary arc to heat the filler wire, further increasing the melting speed of the filler wire and the welding efficiency.

Its main advantages include:

1. Higher welding efficiency: The design of the double - tungsten - electrode enables the filler wire to melt faster, increasing the amount of deposited metal per unit time. Compared with traditional hot wire TIG surfacing, the welding efficiency can be greatly improved, meeting the requirements of large - scale production and rapid repair.

2. Better weld quality: Due to the coordinated action of the two tungsten electrodes, the arc stability during the welding process is better, and the heat input is more uniform, which can effectively reduce welding defects such as pores and cracks. The weld structure is more dense and uniform, improving the strength, toughness, corrosion resistance and other properties of the weld.

3. More flexible process adjustment: By separately controlling the current, voltage and other parameters of the two tungsten electrodes, the welding process can be flexibly adjusted according to different welding requirements and material characteristics. High - quality surfacing can be achieved for base metals of different thicknesses and materials, expanding the application range of the welding process.