Capillary Gap Saturation Degree
The capillary gap saturation degree is the ratio of the actual volume filled with solder to the theoretical maximum volume of the solder gap. A value close to one indicates complete penetration and defect-free filling.
Physico-chemical mechanism of action
The capillary gap saturation degree describes how well the solder penetrates into the microscopic gaps of the metal. This process depends on the surface structure and the stress in the solder gap.
Metallurgical relevance & risks during welding
A low saturation degree can lead to incomplete penetration, resulting in missing joints or porosity in the weld. This increases the risk of cracks and reduces joint strength.
Workshop practice & instructions
To achieve a high capillary gap saturation degree, it is important to ensure a suitable soldering temperature and a sufficiently long holding time. The solder type and the molten pool should also be optimized to ensure complete penetration.