From TIG Welding of Tungsten Electrode to the Parameters Choice of Manual TIG
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- Category: Tungsten Information
- Published on Sunday, 06 September 2015 14:11
- Written by Yahong
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Manual TIG (Tungsten Inert Gas) is a kind of TIG welding of tungsten electrode, and this article mainly describes the welding parameters choice of it, including welding diameter, welding current and wire selection.
(1) Welding diameter, welding current and wire selection
Typically, it is selected by the thickness of the weldment and its material.
Select Aluminum GTAW process parameters in accordance with Table 1 - Choice of alloy GTAW process parameters
Select its associated parameters according to Table 2 - Stainless steel and heat-resistant steel GTAW
(2) Welding current type and polarity
(3) Selection of welding speed
It is determined according to weld appearance and the effects of gas. If the welding speed is too slow, the weld is easy to burn and undercut; if too fast, the gas effect will be worse, the weld would be more prone to incomplete penetration and stomata.
(4) The nozzle diameter and the argon gas flow
Under normal circumstances, the nozzle diameter is about 12-16mm, it is selected according to the thickness of welding and welding current size. Argon gas flow rate should match the diameter of the nozzle, and the gas has reached a good protective effect.
(5) Tungsten projecting length
Under normal circumstances, it is 3-4mm
(6) The arc length
In ensuring the continuous arc, try to use short-arc welding.
Distance
(7) The distance from the nozzle to the weldment
Under normal circumstances, it is typically from 8mm to 14mm.
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