Which of the following defect results from improper welding technique?

Weld spatter is a defect that occurs during the welding process when small droplets of molten metal are expelled from the welding arc and land on the surrounding surfaces. This typically results from factors such as improper arc length, incorrect travel speed, or inadequate shielding gas coverage. When any of these elements are not properly controlled, they can lead to excessive spatter, which can negatively affect both the appearance and the integrity of the welded joint.

Understanding weld spatter is crucial for a coatings inspector as it can interfere with the application of coatings. For instance, spatter may create a rough surface, which can prevent proper adhesion of the coating, leading to premature failure. This emphasizes the importance of proper welding techniques to minimize defects and ensure the quality and longevity of the welded structure.

The other potential answers do not directly relate to improper welding technique. Saponification refers to the reaction that occurs when an oil-based coating is applied too soon on a surface treated with a cleaning agent, knotting describes a defect in coating films often related to application issues rather than welding, and flaring typically pertains to structural issues in pipes or fittings, not welding technique. Therefore, weld spatter stands out as the defect most directly linked to welding practices.