BUSINESS

Perfect Supply and Utilities for the Magnets

A permanent magnet supplies the space which surrounds it with a certain magnetic flux or, what amounts to the same thing; it creates around it a magnetic field whose action can be exerted:

  • On other magnets or ferro-magnetic bodies mechanical attraction forces, orientation forces
  • On electric currents transformation of electrical energy into mechanical energy and vice versa
  • As a static field (deflection of particles, electronic focusing, polarized relays).

These various functions have been fulfilled for a long time by the magnetic fields created by currents: solenoids, electromagnets. But the remarkable progress made in the field of materials for magnets makes it possible to envisage the progressive replacement of the electromagnet by the permanent magnet giving the same efficiency with a footprint three to four times smaller, a reduced weight in the same proportion and great simplicity of production and use. This competition will increase further in the future thanks to the advantages of the magnet:

  • The magnet operates without permanent current; there is therefore no winding overheating, no dangerous sudden breakdown, no insulation problems, no current transport on mobile devices or on rotating windings;
  • The production of a stable magnetic field with current requires expensive and bulky regulation devices, while the magnet can be used alone, and its stability over time and temperature is often better than that of most components of the industry;
  • The magnet can be used where the current is rare: missiles, desert geographic locations;
  • The magnetization and demagnetization devices of the magnets by brief pulses of electric current allow the value of the magnetic flux to be varied as desired.
  • The applications of magnetic fields in electrical engineering and electronics are well known and progress makes sense.

An electromagnet produces a magnetic field when an electric current powers it. It converts electrical energy into magnetic energy. It consists of a winding and a pole piece of soft ferromagnetic material called magnetic core which channels the magnetic field lines. Electromagnets are widely used in industry. A ferromagnetic material is used as the heart of the electromagnet. If a current passes through the coil, the ferromagnetic heart will be magnetized by the magnetic field produced by the coil. Thanks to the superposition of these two magnetic fields. In addition, the presence of the heart increases the magnetic induction generated by the coil.

Industrial electromagnet: Features

The industrial electromagnet is used in many fields such as aeronautics, railways, robotics, automobiles, medicine, and the petroleum industry.An industrial electromagnet is an assembly of mechanical parts whose purpose is to produce a magnetic field once an electric current feeds it.

This fits into an electrical assembly (engine, generator, alternator, etc.). Its primary function, contrary to what one might think, is not to lock, but unlike electromagnetic locks that fulfill this mission. The industrial electromagnet fits into a mechanical system so as to move the associated part.