Pure tungsten electrode (WP)
Metallograph:
Welding Positions:
Description：
Pure tungsten electrode (WP).The pure Tungsten Electrode is the electrode without any addition of oxide .The power of electronic transgression is as high as 4.5ev.Requiring a high volltage for arc derivation; it has a low current capacity and easily burnt. Consequently,it is commonly used in condition of AC and low welding requirements.
Energy spectrum analysis:
Characteristic:
◆ Low vapor pressure
◆ Low current resistance
◆ Good (electrical) conductivity
◆ High elastic modulus
◆ Low thermal expansion
◆ AC
◆ Magnesium, aluminum and alloy suitable
