A40i, A60i
OPERATION Manual 0-5466
4-8
4.03 Marking
Gas Type
1. The first thing you will want to do is determine which type of gas to use. When marking, you will use either
air or argon and they both have their advantages and disadvantages. This chart helps to make the best choice.
MARKING
Air Argon
Advantage
•Lower Cost
•Excellent process overall
•No or little slag on mild steel
•Low heat imput which reduces the
risk of deformation
•High contrast
Disadvantage
•High heat input. Can be a problem
for thin material
•Edges may be jagged when used
on aluminum
•Wider markings and more dross
than argon
•Higher cost than air.
•When heavy scoring is needed there
is more slag on mild steel
Marking Samples at 10 Amps and 0.100" / 2.5mm Stando.
Marking with Air:
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