Fillet Welds on TIG Welding
Fillet Welds on TIG Welding
Fillet welds technique are very good for highlighting technique faults. If the arc gap on Fillet welds technique is too large filler rod is added then the weld pool will tend to melt the edges of the sheet material and not the corner of the welding joint. This results in an untidy welding process with poor penetration into the root.
To start good fillet welding technique use angled back about 20 degrees towards the direction of travel (slope angle) and torch angled at 45 degrees to the corner of the fillet (tilt angle). The fillet welds use metal materials is 2mm stainless make sure set the welding machine to 75 amps.
There are TIG Fillet Welds type:
# Autogenous Fillet Weld
Autogenous fillet welds are the way to develop fillet welding technique. Autogenous fillet welds just means the welds are carried out with no filler rod. Without the filler metal if the tungsten is too far from the corner joint it will arc against one side of the sheet or the other and it will not be possible to maintain a weld pool.
Autogenous fillet welds are pretty, but not as strong as ordinary TIG/tungsten inert gas/GTAW welds.
# Fillet Weld with Filler Rod
The two welds are very similar in size. The filler rod just being added to replace the metal melted into the weld pool. Build up the weld excessively and heat to go to the sides of the fillet and not the corner joint cause by too much filler rod.
On Fillet Weld with Filler Rod, filler rod replaces the metal used to form the weld pool, so there is no undercutting.
reference: www.mig-welding.co.uk
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