What can result from failure to remove tungsten contamination properly?

Failure to properly remove tungsten contamination can lead to a weak weld or even weld failure because the presence of tungsten particles in the weld pool can negatively affect the metal's properties. Tungsten is a non-fusible metal that does not melt during the welding process; therefore, if remnants of tungsten are left in the weld area, they may create weak spots in the weld. These weak areas can lead to poor adhesion, defects, and ultimately, the weld's inability to withstand stress or load, resulting in potential structural failures.

In GTAW, purity and cleanliness of the materials being welded are critical to achieving strong joints, and any contamination, especially from tungsten, can compromise that integrity. Proper cleaning procedures are essential to ensure that the welding process can produce a strong and reliable weld.