Capillary Rise Height Coefficient
The capillary rise coefficient indicates how high a liquid braze alloy can rise in a defined capillary without flowing off due to gravity. It is important for selecting the right braze alloys and processes.
Physical-Chemical Mechanism of Action
The capillary rise coefficient describes how high a liquid braze alloy can rise in a defined capillary. This depends on the properties of the liquid and the material of the capillary wall.
Metallurgical Relevance & Welding Risks
A capillary rise coefficient that is too high can cause the braze alloy to rise in unwanted areas, leading to filling problems or distortions. This can result in defects such as porosity or uneven weld gap.
Workshop Practice & Action Instructions
To control the capillary rise coefficient, choose braze alloys with suitable properties. If you have issues with liquid rise height, check the brazing temperature and the capillary wall material. Use capillaries with an appropriate diameter.