Whether TIG welding (argon arc welding) requires a filler material depends on the specific welding process and joint type.
Situations where filling materials are required
When welding requires filling large gaps or achieving connections in thicker workpieces, filler materials (welding wires) are often used. The welder holds the welding wire and slowly joins the weld pool to increase the amount of metal and ensure the integrity and strength of the weld. The use of filler materials also improves weld formation and appearance.
Cases where filler material is not required
For thin plates or TIGhtly fitted joints, such as butt welds and fillet welds, welding can sometimes be achieved by melting the base metal itself without the use of additional filler material. This approach is often suitable for thin materials, precision parts, or welding situations where heat input needs to be reduced.
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