Production line and process for continuous rolling of single rack

Abstract

The invention relates to a production line for continuous rolling of a single rack. The production line comprises at least one uncoiler, a head and tail end cutting shear, a welding machine, an inlet loop, an inlet tension roll, a single rack multi-roll mill, an outlet tension roll and a plurality of steering rolls which are arranged in sequence. A production process comprises: uncoiling and outputting a plate strip, cutting head and tail ends by an inlet shear machine, welding and entering the inlet loop, feeding the plate strip in the single rack multi-roll mill for rolling through the inlet tension roll, steering the rolled plate strip by the plurality of steering rolls through the outlet tension roll, leading the head end of the plate strip to return at the inlet shear machine leading the initial plate strip, cutting the head end to be welded with the tail end of the plate strip, forming a continuous rolling in a continuous closed loop, and coiling till the rolling is completed. The invention can ensure high-efficient continuous rolling on the plate strips of a certain number, and simultaneously obviously improve various quality index control accuracy of the plates strips.

Description

technical field [0001] The invention relates to the continuous rolling technology of cold metal strips. The invention is mainly used to realize continuous rolling of high-hardness metal strips, such as stainless steel cold-rolled strips, silicon steel and high-strength steel, and extremely thin metal strips. Production, in order to improve the production efficiency and quality stability of cold rolling of such extreme specification metal strips, and effectively improve product quality and control capabilities. Background technique [0002] Cold-rolled metal plates with extreme specifications, such as cold-rolled oriented silicon steel, high-grade non-oriented silicon steel, and cold-rolled stainless steel, etc., due to the extremely high hardness of these materials, their yield strength and tensile strength are significantly higher than ordinary steel plates. At the same time, its elongation rate is significantly reduced and its hardness is extremely high, so the difficulty ...

AI Technical Summary

Problems solved by technology

Aiming at realizing the continuity of multi-roll mills, JP2007-144484A discloses a continuous rolling technology for simultaneously controlling multiple twenty-roll mills. The joint layout, the design investment is very high, and there is a large investment limit in its actual use; for the flatness control of multi-roll mills, JP2003-048009A and JP10-166021A mainly disclose a series of plate shapes for multi-roll mills. This method does not specifically improve the shape of the strip within a certain length of the head and tail.

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