Joint Filling Ratio
The joint fill ratio is the percentage of the gap volume filled with filler material. It influences the mechanical load capacity and the strength ratio of the brazed joint.
Physical-Chemical Mechanism of Action
The joint filling degree describes how well the solder is placed into the gap. A high joint filling degree means that the gap is completely filled with solder, while a low degree leads to air bubbles or incomplete filling.
Metallurgical Relevance & Welding Risks
A low joint filling degree can cause incomplete joints and weak points in the solder connection, affecting mechanical load capacity. Air bubbles can reduce the resistance ratio and lead to cracks or failure in service.
Workshop Practice & Instructions
To ensure a high joint filling degree, it is important to press the solder into the gap so that it is completely inserted. This can be achieved by careful pre-treatment of the gap and using appropriate soldering techniques. A joint filling degree of at least 90% is recommended to ensure a robust solder connection.