Zirconiated Tungsten Electrode
Zirconiated tungsten electrode are electrode made of tungsten with the little amount of zirconium. Zirconiated tungsten electrode contains 0.8% zirconium oxide that is excellent for AC welding due to favorable retention of balled end, high resistance to contamination, and good arc starting. It has the good performance of less Tungsten permeation and good corrosion resistance.
Zirconiated tungsten electrode can not be replaced by any other electrode in terms of its excellent performance. While welding, the end of electrode can retains globose, because of this the seep of tungsten phenomenon can be reduced.
|Trade mark||Added impurity||Impurity quantity||Other impurities||Electric discharged power||Color|
|WZ3||ZrO2||0.20 - 0.40%||< 0.20%||2.5 - 3.0||Brown|
|WZ8||ZrO2||0.70 - 0.90%||<0.20%||2.5 - 3.0||White|
Zirconiated tungsten electrode are good at the performance in AC welding, especially under high load current. These electrode can retain a balled end when welding, which results in less tungsten permeation and good corrosion resistance. It balls up well in AC welding and has a more stable arc than pure tungsten. Especially with excellent performance in high load AC welding, it is not replaceable by any other electrode. It also resists contamination well in AC welding.
Zirconiated tungsten electrode are also used for radiographic-quality welding. Best for application requires minimal tungsten contamination. Balls up easily with AC applications. Not recommended for DC.
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Specification for Tungsten and Oxide Dispersed Tungsten electrode for Arc Welding and Cutting