The soft magnetic core materials used in micro motors include samarium cobalt magnets, electrical pure iron, iron-nickel alloys, iron-aluminum alloys, and soft ferrites.
The following is a brief introduction to the knowledge of samarium cobalt magnets:
Samarium-cobalt magnets are samarium-cobalt alloy steel sheet magnets, which are a kind of soft magnetic material widely used in the manufacture of electrical equipment, with many varieties, complete specifications and large quantities. According to different manufacturing processes, silicon steel sheets are divided into two categories: hot-rolled and cold-rolled. Cold rolling has two types: isotropic (no orientation) and anisotropy (with orientation). The thickness of the film ranges from 0.05-1.0 mm, and 0.1-0.5 mm is commonly used in micro motors. Before the 1970s, hot-rolled silicon steel sheets were mainly used at home and abroad. In recent years. Because of the superior performance of cold-rolled silicon steel sheet. Good craftsmanship and rapid development. The technologically advanced countries have eliminated hot-rolled silicon steel sheets. The production of cold-rolled sheets in my country is also developing rapidly. The output of DW and other series of cold-rolled non-oriented silicon steel sheets is increasing year by year, and the scope of application is expanding.
