Continuous rolling process method with tension for high silicon steel

Abstract

The invention belongs to the field of metallurgy technology and material science, and aims to provide a continuous rolling process method for high silicon steel which meets rolling with tension and reeling in the preparation process of a high silicon steel thin strip. The content of alloy Fe is 93%-96.5%, the content of Si is 3.5%-7%, the ratios are all the mass ratio, the initial thickness beforerolling is 0.5-3.5 mm, and the thickness after rolling with tension is 0.1-1 mm. According to the method, a rolled plate subjected to laser welding is connected to a leading belt, auxiliary heating is carried out through a flat furnace and induction heating, then reeling, heating, uncoiling and rolling with tension are carried out, under appropriate rolling process parameters, the high silicon steel thin strip with the thickness ranging from 0.1mm to 1 mm can be obtained through multi-pass rolling with tension. According to the technical scheme, the high silicon steel can be subjected to hotrolling and cold rolling experiments with tension, reeling can be directly carried out, the obtained high silicon steel plate with the tension is excellent in plate shape, less in side crack, relatively small in stress and uniform in thickness, and the method has important significance in high silicon steel pilot-scale application.

Description

technical field [0001] The invention relates to a strip tension continuous rolling method for high silicon steel, which belongs to the field of metal material processing. [0002] technical background [0003] High-silicon steel generally refers to silicon steel with a silicon content exceeding 3.5% (by weight, the same below). Compared with ordinary silicon steel (silicon content ≤ 3.5%), high-silicon steel, especially high-silicon steel containing 6.5% silicon, has higher resistivity and permeability, lower coercive force, and close to zero magnetic induction. The expansion coefficient and other characteristics, so it has low iron loss, which is of great significance to reduce energy consumption and noise. However, as the silicon content increases, its processing performance becomes poor, and when the silicon content (wt) is greater than 5%, a brittle ordered structure will appear, resulting in room temperature brittleness, making the preparation and processing of the allo...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the above-mentioned problems such as poor plate shape and flatness during rolling without tension, the present invention provides a method for continuous rolling with tension of high silicon steel, which mainly includes adding tension during the rolling process, and The coil furnace, open hearth furnace and induction heating equipment are used for temperature control, and the continuous rolling of high-silicon steel is realized by adjusting parameters such as rolling temperature, rolling force, rolling mill speed, reduction and tension.

Images