Electrode Selection; Tig Welding; Welding Current Setting - ESAB Buddy Arc 200 Instruction Manual

GB
5.5.6

Electrode selection

The electrode diameter selection is based on the
workpiece thickness, welding position, joint form, welding
layer, etc. Please refer to the recommendations on the
electrode package for further details.
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To ensure good quality weld, the electrode should
always be dried or dry stored. This to avoid hydrogen
inclusion, blowholes and cold cracks.
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In the welding process, the arc must not be too long;
otherwise, it will cause unstable arc burning, large
spatter, light penetration, undercut, blowhole, etc. If the
arc is too short, it will cause electrode stick.
5.6

TIG welding

TIG welding melts the metal of the workpiece, using an arc struck
from a tungsten electrode, which does not itself melt. The weld pool
and the electrode are protected by shielding gas.
TIG welding is particularly useful where high quality is demanded and for welding
thin plate. The power sources also have good characteristics for TIG welding.
In order to TIG weld, the power sources must be equipped with:
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a TIG torch with gas valve (See Accessories, page 17)
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a welding gas cylinder (a suitable welding gas)
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a welding gas regulator (suitable gas regulator)
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tungsten electrode
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suitable auxiliary material, if necessary.
Move process selector switch to desired welding process.
NOTE: Power source output is enabled.
Check welding cable and TIG torch polarity matches electrode requirements.
Select desired welding current level.
5.6.1

Welding current setting

The Arc 180 power source has an adjustable welding current from
5 to 180 Amps. The Arc 200 has an adjustable value from 5 to
200 Amps.
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