Fan-shaped silicon steel sheet and rolling method thereof

Abstract

The invention relates to a fan-shaped silicon steel sheet and a rolling method thereof. The fan-shaped silicon steel sheet is characterized by comprising a silicon steel sheet body (1) with a fan-shaped structure, wherein a central angle of the silicon steel sheet body (1) is 45 degrees, 60 degrees, 90 degrees or 120 degrees, a plurality of line slots (2) are internally sunken in an inner edge of the silicon steel sheet body (1), and a high-magnetic conduction plating silicon layer is arranged on an outer surface of the silicon steel sheet body (1). According to the fan-shaped silicon steel sheet and the rolling method thereof, a plurality of fan-shaped silicon steel sheets are welded to form an annular structure, and a large amount of materials are prevented from being wasted during cutting and forming of the fan-shaped silicon steel sheet and the rolling method thereof; meanwhile, by improving the material of the silicon steel sheet, the iron loss value of the silicon steel sheet is reduced, the magnetic induction intensity of the silicon steel sheet can also be improved, the problem of mutual conflict of processes for reducing the iron loss and improving the magnetic inductance in the prior art is solved, and the magnetic performance of the silicon steel sheet is remarkably improved; and due to low loss and high magnetic inductance of the silicon steel sheet, consumption can be reduced, power is saved greatly, and the silicon steel sheet has favorable economic and social benefits.

Description

technical field [0001] The invention relates to a silicon steel sheet, in particular to a fan-shaped silicon steel sheet and a rolling method thereof, and belongs to the field of electromechanical technology. Background technique [0002] Silicon steel sheet is a kind of silicon-iron soft magnetic alloy with extremely low carbon content. Generally, the silicon content is 0.5-4.5%. Adding silicon can increase the resistivity and maximum magnetic permeability of iron. It is mainly used to make various transformers, motors and The iron core of the generator. [0003] In the past, the silicon steel sheet has a ring structure, and a large amount of material was wasted in the cutting and forming process of the silicon steel sheet during production. At the same time, the iron loss value of the previous silicon steel sheet is relatively high, which cannot meet the increasingly high requirements of the wind turbine stator. Contents of the invention [0004] The object of the pres...

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Problems solved by technology

[0003] In the past, the silicon steel sheet was of ring structure, and a large amount of material was wasted in the cutting and forming process of the silicon steel sheet during production.

At the same time, the iron loss value of the previous silicon steel sheet is relatively high, which cannot meet the increasingly high requirements of the wind turbine stator

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