Fine grain strengthening is a common strengthening method in iron and steel materials, through the grain boundary pinning dislocation to make the dislocation near the grain boundary to improve the strength of the material, and can improve the plastic toughness of the material, therefore, the general iron and steel materials will be refined grain to obtain high strength and good plastic toughness

In the design and manufacture of permanent magnet motors, the selection and utilization of materials are becoming more and more demanding, and even close to the limit standards and levels of material performance. As the iron core material of permanent magnet motors, electrical steel must meet very high accuracy requirements in related application technologies and accurate calculation of iron consumption, in order to meet actual needs.

First, let's look at the transformer. A transformer is a device that uses the principle of electromagnetic induction to change the current. It has many functions, such as: voltage conversion and current conversion and so on. Its composition is very simple, mainly composed of a primary coil and a secondary coil with an iron core.

China Iron and Steel Industry Association data show that in late December 2023, the social inventory of 5 major varieties of steel in 21 cities was 7.29 million tons, an increase of 100,000 tons from the previous month, up 1.4%, and the inventory rose slightly after a decline of 7 consecutive days

The first thing to be clear about is that no one material is optimal for every application, and trade-offs must be made between cost, weight, size, and other factors. In addition, the lamination process after manufacturing has a great influence on the performance of the designed iron core.

In order to facilitate the study of the structure and technology of the iron core, according to the shape of the chip is divided into circular chip, sector chip and magnetic pole chip. There are a variety of sizes on the chip, which can be classified as "internal size" and "matching size".

With the continuous acceleration and development of China's modern industry and the further improvement of the level of social development, people have higher and higher requirements for iron and steel products in their daily lives. For the increasing attention of environmental protection countries, clean energy and materials are more important.

The electrical steel punching material and punching quality of the stator and rotor core of the medium and small cage three-phase asynchronous motor directly affect the core quality, and the iron core quality affects the comprehensive performance of the motor. The irregular shape of the iron core affects the winding embedment, the burr is too large, and the accuracy and tightness of the iron core size affect the magnetic conductivity and loss.