Magnetic Pulse Welding
Magnetic pulse welding is a non-contact impact joining process that uses an explosive magnetic field to press the joining partners together and weld them cold.
Physical-Chemical Mechanism of Action
Magnetic pulse welding uses a strong electrical discharge to create a temporary magnetic field. This field acts on the metal parts, giving them high kinetic energy. The parts are then explosively pressed together, resulting in an immediate solid bond.
Metallurgical Relevance & Welding Risks
This process is particularly suitable for joining dissimilar materials and avoids the risk of corrosion. However, an inaccurate discharge can lead to uneven welds or even faulty joints. It is also important that the metal parts are clean to ensure an optimal connection.
Workshop Practice & Procedures
To perform magnetic pulse welding successfully, follow these steps:
• Make sure the metal parts are clean and free of dirt.
• Adjust the discharge to the specific materials. Too high a discharge can lead to uneven welding, while too low a discharge can cause faulty joints.
• Use a stabilized power source and monitor the temperature in the weld zone to ensure a uniform cold weld.