User manual

13
1.TIG welding
TIG welding is a fusion procedure that uses as a source of heat an electric arc created between an infusible
tungsten electrode and the base material to be welded. For TIG welding an inert gas must be used (ARGON) which
protects the welding bead. If filling material is used, it is made up of rods suitable to the material to be welded
(steel, steinless steel, copper, etc).
In TIG mode, welding it is possible in all positions: flat, angle, on the edge, vertical and overhead. Furthermore,
with respect to other types of welding, the welded joint has greater mechanical resistance, greater corrosion
resistance and limited heating in the welded area which limits distortion. Welding can be done even without weld
material, guaranteeing a smooth, shiny weld with no impurities or slag.
Electrode selection and preparation
WELDING CURRENT AND RELATIVE ELECTRODE DIAMETER
electrode (mm)
Range of welding current setting (A)
1.0 (.04 in)
1.6 (.063 in)
2.4 (.094 in)
15-75
60-150
130-240
The electrode should be pointed according to the welding current.
Angle @
[°]
Range of current
[ A ]
30
60-90
90-120
120
0-30
30-120
120-250
>250
ELECTRIC CURRENT
INERT GAS
TUNGSTEN ELECTRODE
DEPOSIT
PENETRATION
MELTED AREA
BASE MATERIAL
PROTECTIVE GAS
TORCH
ROD