The
whole name for GTAW is Gas Tungsten Arc Weld, which is used to describe a
process that uses a non-consumable tungsten electrode to produce the weld. The
weld area is protected from atmospheric contamination by an inert shielding gas
(argon or helium), and a filler metal is normally used, though some welds,
known as autogenous welds, do not require it. A constant-current welding power
supply produces electrical energy, which is conducted across the arc through a
column of highly ionized gas and metal vapors known as a plasma.
GTAW is most commonly used to weld thin sections of stainless steel and non-ferrous metals such as aluminum, magnesium, and copper alloys. The process grants the operator greater control over the weld than competing processes such as shielded metal arc welding and gas metal arc welding, allowing for stronger, higher quality welds. However, GTAW is comparatively more complex and difficult to master, and furthermore, it is significantly slower than most other welding techniques. A related process, plasma arc welding, uses a slightly different welding torch to create a more focused welding arc and as a result is often automated.
Chinatungsten
can provide you many kinds of tungsten electrodes for GTAW welding:
Pure
tungsten electrode (WP)
Thorium
tungsten electrode (WT20)
Cerium
tungsten electrode (WC20)
Lanthanum
tungsten electrode (WL15, WL20)
Zirconium
tungsten electrode (WZ3, WZ8)
Yttrium
tungsten electrode (WY20)
Composite
tungsten electrode
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