Magnetic induction

Inductively heatable particles as Instantaneous Reaction Starter

Inductively heatable particle in an oscillating magnetic field. <br> <br> <br> <br>
© Fraunhofer ISC

Inductively heatable particle in an oscillating magnetic field.



Heating power of various particle systems in a <br> 1 MHz alternating magnetic field. <br> <br> <br> <br>
© Fraunhofer ISC

Heating power of various particle systems in a
1 MHz alternating magnetic field.



Scanning electron microscope image of the octahedral morphology of inductively heatable iron oxide particles. <br> <br> <br> <br>
© Fraunhofer ISC

Scanning electron microscope image of the octahedral morphology of inductively heatable iron oxide particles.



Precise, fast and efficient heating with the help of magnetic nanoparticles in an oscillating magnetic field is a simple, cost-effective and automatable industrial process with which bonding/debonding of adhesive joints, rapid curing of resins and silicones or reactions in flux reactors can be catalyzed.
 

Challenge

  • At the push of a button detachable adhesive joints
  • Adhesive joints for extreme hold
  • Intelligent rapid heating with automatic shut-off at a maximum temperature
  • Reduction of production time by minimizing heating distances and heating duration
     

System

In combination with induction processes, magnetic nano-additives enable rapid, locally limited heating.
The magnetic components contain tailor-made magnetic nanoparticles and are, for example, introduced directly into the material to be heated as additives.
Via a controllable induction field, the energy required for the desired heating is introduced directly into the material equipped with the additives in a fast and precise manner. For example, thermally activated adhesives can be quickly cured or dissolved.


Process advantages are

  • an efficient energy coupling
  • a fast heating rates of over 1000 degrees Celsius per second
  • an exact localisation and limitation of heating
  • an uniform heating of even complex structures such as extruded profiles, tubes, gaskets or fibres
  • a precise temperature control through targeted adaptation of additives or regulation of the induction field

 

Offer

  • Customized synthesis of inductively heatable particles for your application
  • Consulting in the field of induction heating
  • Scaling up your synthesis
  • Adaptation of your thermal process to induction heating