Techniques of Electromagnetic Pure Iron mainly include its annealing process, composition characteristics and application fields.
Annealing process
The annealing process of electromagnetic pure iron is a process to improve the magnetic properties of pure iron through heating and cooling. The specific steps are as follows:
Heating process: The pure iron material is heated to a certain temperature, usually above room temperature. This can be achieved by equipment such as resistance annealing furnace, atmosphere annealing furnace or vacuum annealing furnace. During the heating process, the lattice structure of pure iron will change, and the arrangement of magnetic regions will also change, thereby removing some impurities, oxides and internal stresses, so that the crystal has better magnetic properties after annealing.
Cooling process: Cooling during the annealing process is very critical. Different cooling rates will have different effects on the magnetic properties of pure iron. Usually cooling is carried out by rapid cooling or slow cooling:
Rapid cooling: The heated pure iron material is quickly placed in water or oil for cooling to increase its magnetic permeability and magnetic induction intensity.
Slow cooling: The heated pure iron material is placed in a natural environment for cooling to increase its saturation magnetic induction intensity and residual magnetic induction intensity.
