Fillet weld convexity
Fillet weld convexity describes the rounded shape of a weld, which results from the compression of the metal parts. Excessive convexity can lead to stresses and cause cracks.
Physical-Chemical Mechanism of Action
Fillet weld convexity forms due to the compression of the metal parts during welding. This results in a rounded shape of the weld, which is created by the stress and pressure distribution in the structure.
Metallurgical Relevance & Risks in Welding
Excessive convexity can lead to increased stresses in the weld, which may cause cracks or hot cracking. This compromises the mechanical properties and the service life of the weld.
Workshop Practice & Instructions
To achieve optimal fillet weld convexity, the stress during welding must be set precisely. A convexity of 1–2 mm is typically appropriate. Values above 3 mm can lead to cracking. Always monitor the stress distribution and adjust the pressure settings accordingly.