Friction Pressure
The friction welding pressure is the axial force applied during the friction phase, promoting plastic deformation and the removal of contaminants.
Physico-Chemical Working Mechanism
Friction welding pressure acts axially on the joining partners and causes plastic deformation of the materials. This enables good contact between the metals and promotes the removal of impurities such as dirt or oxidation.
Metallurgical Relevance & Risks When Welding
Too low pressure can lead to poor contact and porosity, which weakens the weld. Too high pressure increases the risk of cracks and can cause overheating, which degrades mechanical properties.
Workshop Practice & Action Instructions
Set the friction welding pressure between 100 and 200 N/mm². This ensures good contact and effective removal of impurities. For high-carbon steels, a pressure of at least 150 N/mm² is recommended to avoid porosity.