Thermo-stable oriented silicon steel making method

Abstract

The invention discloses a thermo-stable oriented silicon steel making method. The method includes a scanning step. In the scanning step, an ultraviolet femtosecond laser with the wavelength of 343 nm is adopted for performing scanning on the surface of a single side of an oriented silicon steel sheet so as to carve multiple trench lines perpendicular to the rolling direction of oriented silicon steel. By means of the thermo-stable oriented silicon steel making method, iron loss can be substantially reduced.

Description

technical field [0001] The invention relates to a manufacturing process of iron cores such as transformers and motors, and belongs to the field of mechanical functional material manufacturing, in particular to a manufacturing method of thermally stable oriented silicon steel. Background technique [0002] Oriented silicon steel is known as the "work of art" in steel products, and it is mainly used to make iron cores such as transformers and motors. In view of the increasingly serious energy problem and the increasing development of the power industry, continuous improvement of the performance of grain-oriented silicon steel and reduction of its core loss (referred to as iron loss) have always been a research topic that has attracted much attention. [0003] In the prior art, the technical solutions for reducing silicon steel loss mainly include: [0004] 1) Processing method of oriented silicon steel: The traditional oriented silicon steel production process is: iron-silico...

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Problems solved by technology

[0007] 1) The traditional oriented silicon steel production process can reduce the iron loss level by about 5% on the basis of non-oriented silicon steel, but the reduction is limited

[0008] 2) Using the far-infrared laser grooving process with wavelength λ=10.6μm can further reduce the iron loss level on the basis of oriented silicon steel, but because of its low photon energy, it can reduce the iron loss level by 5-7 on the basis of oriented silicon steel %, but the reduction is still limited

[0010] 4) Using the far-infrared laser groove process with wavelength λ=10.6μm, due to the low photon energy, the scanning speed is 5-50mm / s, and the processing efficiency is low

[0011] 5) Using the far-infrared laser groove process with wavelength λ=10.6μm, due to the slow scanning speed, there is a problem of thermal deformation

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