Crack in the Weld Seam
Cracks in weld seams are among the most critical welding defects, as they severely reduce the strength and durability of a structure. Surface cracks usually form due to high stresses in the material during cooling. Common causes include excessive heat input, improper joint design, unsuitable filler materials, or insufficient preheating of the base material.
How to avoid it:
- Control and reduce heat input
- Use suitable filler materials
- Preheat thick or hardenable steels
- Optimize joint geometry to minimize stresses
