Thin-gauge non-oriented silicon steel 35BW440 and production method thereof

Abstract

The invention relates to thin-gauge non-oriented silicon steel 35BW440. The non-oriented silicon steel 35BW440 comprises the following elements including, by mass, less than or equal to 0.003% of C, 0.8%-2.0% of Si, 0.4%-1.2% of Mn, less than or equal to 0.015% of P, less than or equal to 0.003% of S, 0.25%-0.6% of Als, less than or equal to 0.003% of N, 0.04%-0.1% of Sb, less than or equal to 0.0025% of O and the balance Fe and inevitable impurities. On the premise that no electromagnetic stirring equipment is used for increasing the magnetic induction intensity of the non-oriented silicon steel, the electromagnetic performance is improved by adding the Sb element and increasing {110} and {100} texture components beneficial to the electromagnetic performance, and the surface quality of the non-oriented silicon steel is improved by adopting the processes of secondary cold rolling and intermediate continuous annealing.

Description

technical field [0001] The invention relates to the technical field of alloy smelting, in particular to a thin gauge non-oriented silicon steel 35BW440 and a production method thereof. Background technique [0002] Non-oriented silicon steel is a ferrosilicon alloy with very low carbon content. In the steel plate after deformation and annealing, its grains are distributed in random orientation. The product is usually a cold-rolled plate or strip with a nominal thickness of 0.35 and 0.5mm. For the manufacture of motors and generators, the magnetic induction of non-oriented silicon steel is high, and silicon steel sheets with higher magnetic induction can be obtained under the same magnetic field. The volume and weight of the motor or transformer core made with it are relatively small, which can save Silicon steel sheets, copper wires and insulating materials, etc. [0003] In the prior art, it is usually necessary to use argon gas sealing and electromagnetic stirring during ...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, it is usually necessary to use argon gas sealing and electromagnetic stirring during continuous casting to increase the magnetic induction of non-oriented silicon steel. Finally, it is necessary to normalize the hot-rolled coil. The function of normalized annealing is to improve the crystal Granular structure, but there is no electromagnetic stirring equipment and normalizing annealing equipment on the production line of some steel mills

Images