Tungsten Electrode

1. Ceriated tungsten electrodehas the following advantages:
Non-radioactive
Low melting rate
Long welding life
Good arcs performance

2. Thoriated tungsten electrodehas the following advantages:
Electronic function lower
Recrystallization temperature is higher
Conductivity better
Mechanical cutting good performance
Easy arc starting, arc stability
The thoriated tungsten electrode is a kind of common use tungsten electrode materials, it has better welding properties than pure tungsten electrodes and other oxide add electrode welding performance even superior integrated, and widely used in DC welding field. The thorium-tungsten electrode simple operation, even in overload electric trickles down can also very good operation, it is regarded as part of the high quality welding. The thoriated tungsten electrode in use process, energy-economizing effect is obvious, arcs current relative decline from 20% to 50%, because lower welding current, do not appear to splash in use process, very not easy to go round, electrode service life span is long. The thoriated tungsten electrode widely used in carbon steel, stainless steel, nickel alloy, titanium alloy of welding etc., is high quality welding preferred materials.

3. Zirconiated tungsten electrodes in alternating current environment, the welding performance is good. Especially in high load current circumstances, zirconiated tungsten electrodes have superior performance showed that is other electrode irreplaceable. In welding, zirconiated tungsten electrode balls up well thereby reducing permeability tungsten phenomenon, and it has good corrosion resistance. In welding cases, zirconiated tungsten electrode and pure tungsten electrode only satisfy communication environment of welding. Applicable to exchange conditions magnesium, aluminum alloys welding etc.

4. Lanthanated tungsten electrodehas the following advantages:
Mechanical cutting performance is better
Creep resistance is better
High recrystallization temperature
Ductility good
Lanthanated tungsten electrode is the most popular electrode materials, especially it that content of lanthanated tungsten electrodes for 1.5% (There is difference with content 2.0% ). A scientific research shows that, 1.5% thorium-tungsten electrode has the closest to 2.0% thorium-tungsten electrode which has generized the conductive properties, therefore, welding personnel can easily replace electrodes, without changing equipment parameters. When the welding either in exchange conditions or DC conditions are relaxed freely, double the user's favour

5. Pure tungsten, yttrium tungsten, Composite electrode
Their characteristics:
Pure tungsten does not add any rare earth oxides, electron emission ability minimum so onlyable for exchange big load conditions, such as aluminum and aluminum welding of mg alloy welding etc...Steam pressure lower, resistance small, conductivity good, thermal expansion small, elastic modulus high.
Yttrium tungsten in welding, arc beam slender, strong compression, especially in the middle and large current. At present mainly used for military and astronautical industry.
Composite electrode is added in tungsten two or more kinds of rare earth oxides, Complement each additives, bring out the best in each other, Make the welding performance is more conspicuous.