Included angle of the weld preparation
The included angle of the weld joint is the angle between the two surfaces of the workpiece to be welded. Too large an angle can lead to poorer weld quality because the filler material cannot flow well into the joint.
Physical-Chemical Mechanism of Action
The groove angle of the weld joint affects how well the filler metal can flow into the joint. A large angle increases stresses and prevents good contact between the pieces.
Metallurgical Relevance & Welding Risks
A too large groove angle can lead to poor weld quality, such as missing filler material or incomplete contact. This increases the risk of cracks and reduces mechanical properties.
Workshop Practice & Action Instructions
The groove angle should be between 20° and 35°, depending on the material and welding method. If the joint is too wide (angle > 40°), it can be helpful to prepare the areas differently or use other welding methods such as spot welding.