Method and device for preparing high-silicon silicon steel thin strip under magnetic field through powder diffusion method

Abstract

The invention discloses a method and a device for preparing a high-silicon silicon steel thin strip under a magnetic field through a powder diffusion method. According to the method, holes are formed in a low-silicon steel strip to be machined, then surface reinforcing treatment is carried out on the low-silicon steel strip to be machined, the holes are filled with an iron-silicon alloy powder and rolling forming is carried out on the powder, and then heat treatment is carried out on the powder in a magnetic field environment to obtain the high-silicon silicon steel thin strip with certain orientation, a silicon content of 6.5wt%Si and excellent magnetic performance. According to the method and the device, long-size and continuous operation can be realized; and moreover, a near-net-shape thin strip can be prepared, and therefore, a preparation cost can be remarkably lowered.

Description

technical field [0001] The invention relates to the technical fields of magnetic material preparation and heat treatment, in particular to a method and a device for preparing high-silicon silicon steel strips by powder diffusion under a magnetic field. Background technique [0002] High-silicon steel ribbons, especially ribbons with a silicon content of 6.5wt% Si, have excellent soft magnetic properties such as low iron loss, low magnetostriction coefficient, and high magnetic permeability. They are ideal soft magnetic materials for high-frequency motors. Widely used in national defense, electric power, electronics, electrical appliances and other fields. However, as the silicon content increases, the brittleness of the silicon steel strip increases significantly. When the silicon content exceeds 5wt%, the elongation of the silicon steel is almost reduced to zero. Silicon silicon steel thin strip. [0003] Scholars at home and abroad have done a lot of research on the prep...

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Problems solved by technology

However, as the silicon content increases, the brittleness of the silicon steel strip increases significantly. When the silicon content exceeds 5wt%, the elongation of the silicon steel is almost reduced to zero. Silicon silicon steel strip

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