Fillet weld geometry
The fillet weld geometry describes the shape and size of a triangular weld, consisting of two components at an angle to each other. It is defined by the leg length and the weld throat.
Physico-chemical Mechanism of Action
The fillet weld geometry influences how the metal deforms during welding. The leg length and throat determine the stress distribution and deformation of the components.
Metallurgical Relevance & Welding Risks
Incorrect fillet weld geometry can lead to stress concentrations, resulting in cracks or hot cracks in the material. Too short a leg length can disturb the deformation balance and lead to insufficient weld volume. An overly thick throat increases stress on the components and can damage the metal structure.
Workshop Practice & Instructions
To ensure optimal fillet weld geometry, the following values should be observed: A leg length of at least 1.5 to 2 times the throat is recommended. The throat should be adapted to the chosen welding process and the component materials. For steel components, values should be between 1.5 mm and 3 mm.