Tig welding excess penetration
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Penetration becomes excessive when the joint gap is too large, the root faces are too This imperfection is frequently associated with TIG welding with the most.
Gas Tungsten Arc Welding (GTAW), or TIG, is often specified to meet strict The weld here shows contamination caused by lack of shielding gas, which can the weld puddle and deeper penetration (and often at increased travel speeds).
Description:If bubbles form, you have a leak and need to replace the defective components. Internal or root undercut is an erosion of the base metal next to the root of the weld. To improve the wetting action, position the welding torch or gun at a slight angle toward the direction of travel. Figure 1 — Poor Gas Coverage Leads to Contamination The weld here shows contamination caused by lack of shielding gas, which can happen when the shielding gas is not turned on, there is either too little or too much gas shielding, or the gas shielding is blown away. Figure 3 Welding Process: The deepest possible weld penetration is always best.