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RXT150E
TIG WELDING PROCEDURE
Before commencing, make sure that your hand held welding mask or welding helmet is in po-
sition to protect your eyes. It is also advisable to wear gloves and clothing, which cover the
hands and arms to prevent flash burns.
Note:
TIG welding is a specialised procedure and it may take some time to become profi-
cient. Further reading and /or training is recommended.
TIG is defined as a welding process whereby the arc, during the working process, is main-
tained through an infusible metallic electrode (normally tungsten). The area of the arc
(electrode and weld pool) is protected against atmospheric contamination through an inert
gas, such as argon which continuously flows through the welding torch.
+
-
Filler Rod
The TIG welding torch is connected directly to the
(-)outlet of the welding machine and the gas flow
is controlled manually by the valve built into the
torch. The earth clamp is connected to the (+)
outlet.
A filler rod is when introduced to the weld pool.
General procedure.
Ensure that the tungsten electrode is correctly sharpened before commencing.
Turn the gas valve on to allow the gas to flow.
Initiate the arc (scratch start).
Note:
A copper striker plate can assist in starting the arc and reduce electrode
contamination.
Pull the electrode away from the workpiece to form the arc.
Once the weld pool is created, the welding can commence
Depending on the type of weld etc, filler rod may be required.
Once the weld is complete, pull the electrode away from the workpiece and close the
gas valve to stop the flow of gas.
Caution:
Beginners are advised to practice on a scrap piece of metal (of the same
type as that to be welded) in order to set the output power to the correct level for the
ideal penetration.
Welding
Power
source
