Dr. Johannes Diller

damage to weld seams

Causes of faulty welds: Inadequate weld seam preparation, incorrect filler materials, unsuitable material combinations and non-compliance with heat treatments are common. Typical welding defects such as cardboard joints, solidification cracks, shrinkage cavities, hardening and undesirable microstructure formation often lead to fractures or corrosion damage during operation. Our experts analyze welding defects using metallography and hardness testing and offer targeted advice on how to avoid defects.

Typical damage and causes of welded joints

Schaden	Cause	Episode
cardboard connections	Inadequate weld preparation, incorrect welding parameters, incorrect filler materials	Weak connection, insufficient strength
solidification cracks	Cooling too quickly, insufficient heat treatment, wrong choice of material	cracking in the weld
void formation	Trapped gases during the welding process, inadequate welding technique	porosity and weakening of the weld
hardening	Too high welding speed, incorrect heat treatment, wrong choice of material	brittleness and lower toughness of the weld
Undesirable microstructure formation	Insufficient control of welding parameters, unsuitable materials or faulty heat treatment	Negative effects on material properties
stress cracks	Insufficient relaxation of the welded joint, high internal stresses due to incorrect welding technique	cracking due to stress
Corrosion damage	Incorrect material combinations, lack of heat treatment, inadequate protective measures against environmental influences	material degradation due to corrosion
Weld defects	Incorrect welding technique, inadequate weld preparation, incorrect filler materials	Reduced strength and structural integrity

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damage to weld seams

Typical damage and causes of welded joints

Image gallery Damage to welded joints

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