Control method for high-mark non-oriented silicon steel cold continuous rolling edge crack

Abstract

The invention relates to the technical field of rolling technologies, in particular to a control method for the high-mark non-oriented silicon steel cold continuous rolling edge crack. The method comprises the steps that the load allocation of a first rack is reduced to 25%-30% from 33%-36% during automatic system allocation; and the channeling roll value of a UCMW rolling mill work roll is set to be -40-20 mm. According to the control method for the high-mark non-oriented silicon steel cold continuous rolling edge crack in the embodiment, the load allocation of the first rack is reduced to 25%-30% from 33%-36% during automatic system allocation, and the outlet edge crack of the first rack can be reduced; the channeling roll value of the UCMW rolling mill work roll is set to be -40-20 mm, the strip steel edge part stress can be effectively reduced, and the problem of the edge crack of the high-mark non-oriented silicon steel in the cold continuous rolling process is avoided; and the production capacity of the high-mark non-oriented silicon steel cold continuous rolling is improved, and the quality of the high-mark non-oriented silicon steel is guaranteed.

Description

technical field [0001] The invention relates to the technical field of rolling technology, in particular to a method for controlling edge cracks in continuous cold rolling of high-grade non-oriented silicon steel. Background technique [0002] Non-oriented silicon steel is a soft magnetic material widely used in electric power and electronics industries. Among them, non-oriented silicon steel with iron loss P1.5 / 50≤4.00W / kg is called high-grade non-oriented silicon steel. High-grade non-oriented silicon steel is mainly used to manufacture iron cores of large and medium-sized motors and generators with large capacity. Restricted by process characteristics, high-grade non-oriented silicon steel is generally rolled by a single stand, while acid tandem mills generally roll medium and low-grade non-oriented silicon steel. In order to further increase the production capacity of high-grade non-oriented silicon steel, reduce production costs, release the production capacity of the ...

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Problems solved by technology

[0003] The embodiments of the present invention provide a method for controlling edge cracking of high-grade non-oriented silicon steel in continuous cold rolling, which solves the technical problem of edge cracks easily occurring in the process of high-grade non-oriented silicon steel in the prior art, and improves the quality of high-grade non-oriented silicon steel. The production capacity of continuous cold rolling of non-oriented silicon steel and the quality of high-grade non-oriented silicon steel are guaranteed

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