| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5497369 | Physics Procedia | 2016 | 11 Pages |
Abstract
A contactless electromagnetic weld support system was used for laser beam welding of thick ferromagnetic steel plates compensating these effects. An oscillating magnetic field induces eddy currents in the weld pool which generate Lorentz forces counteracting the gravity forces. Hysteresis effects of ferromagnetic steels are considered as well as the loss of magnetization in zones exceeding the Curie temperature. These phenomena reduce the effective Lorentz forces within the weld pool. The successful compensation of the hydrostatic pressure was demonstrated on up to 20Â mm thick plates of duplex and mild steel by a variation of the electromagnetic power level and the oscillation frequency.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Physics and Astronomy (General)
Authors
André Fritzsche, Vjaceslav Avilov, Andrey Gumenyuk, Kai Hilgenberg, Michael Rethmeier,