Peening Flank
The ball flank is the area in shot peening welding where the impacts overlap and ensure complete plastic deformation. It is crucial for uniform surface properties.
Physical-Chemical Mechanism of Action
The shot overlap is created by the overlap of adjacent impacts during shot peening welding. This achieves a gapless plastic surface layer deformation, ensuring the homogeneity of surface properties.
Metallurgical Relevance & Welding Risks
Insufficient shot overlap can lead to inconsistencies in surface properties, such as variations in hardness or stress states. This can cause cracks or corrosion issues in the weld pool.
Workshop Practice & Instructions
To ensure good shot overlap, it is important that the impacts overlap correctly and allow gapless plastic deformation. This requires careful adjustment of the peening direction and welding parameters. A typical shot overlap is about 1 to 2 mm, depending on the specific material properties and desired outcome.