Short-flow high-efficiency preparation method of thin high-silicon electrical steel strip

Abstract

The invention discloses a short-flow high-efficiency preparation method of a thin high-silicon electrical steel strip, which belongs to the field of metal material preparation and processing. The short-flow high-efficiency preparation method of the thin high-silicon electrical steel strip is characterized by comprising the following steps of: preparing a column-shaped crystal rod blank or plate blank, which contains more than 80 percent (100) of silk texture, from a Fe-(6.5 wt percent) Si alloy blank and by using zone melting directional solidification technology; keeping the rod blank or the plate blank at the temperature of between 700 and 1,000 DEG C in an argon protective atmosphere for 1 to 5 hours and then performing quenching treatment, and removing the oxide skin on the surface of the quenched rod blank or the quenched plate blank by a mechanical method or manual grinding; wrapping the rod blank or the plate blank by using stainless steel, common carbon steel or pure iron as a wrapping material, heating the whole body after the wrapping and performing middle-temperature rolling; and peeling the wrapped sheath, washing the high-silicon electrical steel with acid and then performing room-temperature rolling to obtain the thin high-silicon electrical strip with a splendid surface. The short-flow high-efficiency preparation method of the thin high-silicon electrical steel string has the advantages that: the yield of the thin strip prepared by the process approaches 100 percent; the prepared thin high-silicon electrical steel strip has a splendid surface and a uniform texture, the minimal bending radius is less than 2.5 millimeters, and the thin high-silicon electrical steel strip can be directly coiled to form an annular core of a transformer or an inductor and also can be prepared into high-silicon electrical steel through subsequent treatment.

Description

Technical field: [0001] The invention relates to a short-flow and high-efficiency preparation method for high-silicon electrical steel strips, which belongs to the technical field of metal material preparation and processing, and in particular provides a high-efficiency preparation and processing technology for high-performance, low-plasticity and difficult-to-process alloy strips. Background technique: [0002] Silicon steel, also known as electrical steel, is mainly used as the iron core of various motors and transformers and other electrical components. It is an indispensable soft magnetic alloy for electric power, electronics and military industries. With the increase of silicon content, the resistivity and permeability of silicon steel increase, the coercive force and eddy current loss decrease, especially when the silicon content reaches about 6.5% (mass percentage), the magnetostriction coefficient tends to zero (only 0.6×10 -8 ), which can significantly reduce the n...

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a short-process and high-efficiency preparation method of high-silicon electrical steel strip, which solves the problems of complex preparation process, high equipment and control requirements, and high cost of silicon electrical steel strip, and has the advantages of short process, high efficiency, and easy Industrial application, high product performance and other advantages

Images