Cerium-containing high-strength non-oriented silicon steel thin strip and preparing method thereof

Abstract

The invention relates to a cerium-containing high-strength non-oriented silicon steel thin strip and a preparing method thereof. According to the technical scheme, the cerium-containing high-strengthnon-oriented silicon steel thin strip comprises chemical components including, by weight, 3.0%-3.5% of Si, 0.5%-1.0% of Al, 0.1%-1.0% of Mn, 0.01%-0.03% of Ce and the balance Fe and inevitable impurities. Smelting is conducted according to the chemical components of the cerium-containing high-strength non-oriented silicon steel thin strip, a slab is formed in a casting manner under the condition of 1400 DEG C to 1550 DEG C, the slab is subjected to hot rolling under the condition of 1200 DEG C to 1300 DEG C, and a hot-rolled plate with the thickness being 0.8 mm to 1.5 mm is obtained; then thehot-rolled plate is subjected to cold rolling under the condition of the room temperature to reach the thickness being 0.1 mm to 0.3 mm, and the cerium-containing non-oriented silicon steel thin strip is obtained; and then the cerium-containing non-oriented silicon steel thin strip is subjected to recrystallization annealing, and the cerium-containing high-strength non-oriented silicon steel thinstrip is obtained. The cerium-containing high-strength non-oriented silicon steel thin strip and the preparing method thereof have the beneficial effects that the technology is simple, the productioncycle is short, and the preparing cost is low, and the prepared cerium-containing high-strength non-oriented silicon steel thin strip has high strength, low iron losses and high magnetic induction.

Description

technical field [0001] The invention belongs to the technical field of high-strength non-oriented silicon steel. Specifically relates to a cerium-containing high-strength non-oriented silicon steel strip and a preparation method thereof. [0002] technical background [0003] With the rapid development of economy and society, the performance requirements of new energy vehicles are getting higher and higher. Generally speaking, the stator of the driving motor is required to have good magnetic properties, and the rotor has high-strength mechanical properties. The production of the rotor requires precise machining, which will greatly increase the production cost of the iron core. From the perspective of cost reduction, it is more appropriate to use the same silicon steel plate to stamp the stator and rotor cores, which requires the development of non-oriented silicon steel plates with both magnetic and mechanical properties. [0004] As a non-oriented silicon steel plate for ...

AI Technical Summary

Problems solved by technology

Therefore, these two patent technologies are aimed at the problem of poor magnetic properties of low-grade non-oriented silicon steels with low Si content (less than 2wt%), and improve their magnetic properties by adding Ce, and do not involve high-grade non-oriented silicon steels ( Si content is greater than or equal to 3wt%), and it does not involve how to improve the strength of non-oriented silicon steel