Preheating and post heating
Heating of hardened parts for electron beam and laser welding or surface hardening
Selective tempering of complex hardened parts
Joining of rotor and shafts, gearbox and bearing
Homogeneous heating ensures optimal material properties
Heating of molds
Fast and efficient heating of extrusion dies
Connecting polymers with metals
Precise and uniform heat allows for a very good surface adhesion.
For homogeneous heating of workpieces the UMH technology makes use of the hysteresis loss effect occurring in workpieces when exposed to an alternating magnetic field. Hysteresis losses are created by the changing alignment of the domains or crystalline structures of ferromagnetic and paramagnetic materials to an external alternating magnetic field.
The magnetic flux of the external magnetic field permeates the material and aligns the domains according to the magnetic field polarization. If the alignment of the magnetic field is changed the domain orientation will follow the magnetic field. The friction occurring in this process produces heat losses in the material, which cause – at a corresponding process repetition frequency – an increase of the material temperature.