Can be divided into Low-carbon electrical steel and Amkotie, silicon steel, Nickel-iron soft magnetic alloy, iron and cobalt soft magnetic alloy, iron-silicon Aluminum soft alloys, etc., in the power industry, mainly in the higher magnetic field with high magnetic sense and low core loss of the Alloy. In the electronics industry, the main use of low or medium magnetic field with high permeability and low coercivity of the Alloy. At high frequencies, a thin strip or higher resistivity alloy is Required. They are usually made of plates or strips.
Its hysteresis loop area is small and narrow, the coercivity is generally lower than 800a/m, high resistivity, low Eddy current loss, high permeability, high saturation magnetic sense. It is generally processed into plates and strips. The melting method is Prepared. Mainly used in electrical appliances, telecommunications industry, A variety of iron core components (such as transformer iron core, relay Iron core, choke, etc.). Commonly used soft magnetic alloys have Low-carbon electrical steel, Amkotie, silicon steel, Nickel-iron soft magnetic alloy, Iron-cobalt Soft magnetic alloy, Iron-silicon soft alloys and so On.
Magnetic alloys that are susceptible to magnetization under external magnetic fields and that remove magnetic flux after magnetic induction (magnetism) are basically disappearing. The hysteresis loop area is small and narrow, and the coercivity (Hc) is generally less than Oe (see precision alloys). At the end of 19th century, the motor and transformer cores were made of low carbon steel. The more magnetic silicon steel sheets of the 1900 quickly replaced mild steel, which was used to produce products for the Power industry. The NI-FE alloy was introduced in 1917 to meet the needs of the telephone system at the Time. later, Fe-co alloys (1929), fe-si-al alloys (1936) and Fe-al alloys (1950) with different magnetic properties were presented for special Purposes. China started production of hot rolled silicon steel sheets in 1953. In the late 50, we began to study soft magnetic alloys such as NI-FE and fe-co, and began to produce some major soft magnets in the 60. The production of cold rolled silicon steel strips began in the 70 's.