The different colors of the tungsten needle represent: green represents pure tungsten; gray represents 2% cerium dioxide; red represents 2% thorium dioxide; sky blue represents 2% lanthanum; blue represents 2% yttrium; brown represents 2% thorium dioxide. 4% zirconium etc.
The different colors of the tungsten needle represent different doping elements. For example, green represents pure tungsten; gray represents 2% cerium dioxide; red represents 2% thorium dioxide; sky blue represents 2% lanthanum; blue represents 2% yttrium; brown represents 4% zirconium.
Tungsten has the characteristics of high melting point: 3410 degrees, boiling point: 5900 degrees, high strength, low thermal conductivity, and low high temperature performance, so it is suitable for non-melting electrodes. Cerium tungsten has small current, good arc starting, environmentally friendly tungsten reflectivity, stable current, and poor current resistance; thorium tungsten has low loss, easy arc starting, long life, current resistance is about 30% higher than cerium tungsten, and is slightly radioactive; Lanthanum tungsten and thoriated tungsten have similar functions, and AC welding is also ideal, and the price is slightly higher; pure tungsten is cheap, AC welding is ideal, loss block, poor current resistance; Yttrium tungsten has strong penetration, slender arc beam, high degree of compression, and is mainly Used in the military and aerospace industries, the price is slightly higher; the welding performance of zirconium-tungsten under AC is better than that of pure tungsten, and it has good corrosion resistance.
More details of tungsten needles, please visit website: http://tungsten.com.cn/tungsten-needles-and-pins.html
Please contact CHINATUNGSTEN for inquiry and order of tungsten needles:
Email: sales@chinatungsten.com
Tel.: +86 592 5129595
