The types of tungsten electrode are various, such as thorium tungsten electrode, cerium tungsten electrode, pure electrode, zirconium tungsten electrode, lanthanum tungsten electrode, yttrium tungsten electrode and composite tungsten electrode. It is impossible to distingush the specific type with naked eyes for the rare earth element through tungsten electrode is proved to be trace elements. Currently, it is the mainly used way on the market to distingush it by its tip's color.

 

You may ask why it shows different colors and how it is standardized? For example, thorium tungsten electrode is colored red and cerium tungsten electrode gray.

 

Actually, the reason is very simple. To eliminate confusion over its type, each electrode is color-coded when it entered the market. Unfortunately, as tungsten electrode is a kind of 

less known welding product, we failed to trace the clue who was the first person to produce tungsten electrode. Since then, however, the standard has been following worldwide and tungsten electrodes in the current market are indentified by the color code.

 

 

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