Page 183 - CITS - Welder - Trade Theory

WELDER - CITS

• Equipment costs can be higher than with other processes.
• Concentrations of shielding gas may build up and displace oxygen when welding in confined areas – ventilate
the area and/or use local forced ventilation at the arc to remove welding fumes and gases. If ventilation is poor,
wear an approved air-supplied respirator.
TIG welding equipment (Fig 2)
a An AC or DC arc welding machine.
b Shielding gas cylinders or facilities to handle liquid gases

c A shielding gas regulator
d A gas flowmeter
e Shielding gas hoses and fittings
f A welding torch (electrode holder)

g Tungsten electrodes
h Welding filler rods
i Optional accessories
j A water cooling system with hoses for heavy duty welding operations
k Foot rheostat (switch)

Fig 2

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CITS : C G & M - Welder - Lesson 49 - 60