How to Weld Copper Bonded Tungsten Copper Electrode

The welding method of copper bonded tungsten copper electrode is silver brazing, which is the most popular method in our workshop. The silver welding material is used, so that the electricity conductivity can be maintained.

The copper bonded electrode is mainly used for spot welding, which is for the industry of steel vehicles. When used to weld, the welding method applied for the welding bodies is pressure welding, which is a welding method that do not used any welding material, but high pressure to joint two parts together, so that the work pieces is without resistance on the welding gap. Copper is a material with high electricity conductivity, which is used to convey electricity and generate heat for welding bodies.

For the welding method to the electrode itself, besides brazing, there are other welding methods, such as pressure weld, melting weld, etc.

Melting weld is metals welding and recrystallization, which is the same process of casting. This method is to heat the welded part until melting, the welded parts will be welded together after cooling. The methods include arc welding, gas welding, electroslag welding, electron beam welding and excitation welding.

Pressure weld is make the welded part under great pressure and make the contacted surface without oxidized materials and other impurities. The welded two parts will be welded together when reached their stress range. Pressure weld is not applied any welding filling materials, but only pressure to move the oxidized materials on the surface and weld the workpieces together by certain pressure.

Brazing is applied liquid material to fill in the gap of two welded parts, and jointed them together. This method required a third metals, such as silver. Hard brazing and soft brazing are included in these two welding methods.

Even though these three methods can be used for the welding of copper and tungsten copper, silver brazing is still the widely used method. Any other welding methods or any opinion on tungsten copper are all welcomed to be discussed.

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