Tension comprehensive optimization setting method of six-roll skin pass mill

Abstract

The invention discloses a method for comprehensively optimizing tension setting of a six-roll skin pass unit, which belongs to the technical field of skin pass production. Fully considering the equipment and process characteristics of the six-high skin pass mill during the wet skin pass rolling process, according to this method, the set value of the tension of the six-roll pass pass unit is determined, and a set of optimal tension set values ​​of the pass pass machine is determined. Within the critical point, under the premise that the vibration judgment conditions are satisfied and the rolling pressure is not out of tolerance, the distribution of front tension, rolling pressure, and roll pressure is the most uniform in the transverse direction, and finally realize the improvement under the premise of ensuring that the skin pass unit does not slip and vibrate. The shape and surface quality of the finished strip can be improved to reduce the occurrence probability of color difference defects on the strip surface.

Description

technical field [0001] The invention belongs to the technical field of skin-pass production, and in particular relates to a method for comprehensively optimizing tension setting of a six-roll skin-pass machine. Background technique [0002] In recent years, with the development of social economy, the demand for plates and strips is increasing, and people's requirements for the quality of plates and strips are also getting higher and higher. As the process closest to the finished product in cold-rolled strip production, leveling can not only ensure the mechanical properties and shape quality of the annealed product by controlling the elongation and shape of the strip, but also form a certain roughness, to achieve the purpose of improving the strip coating performance and formability. In the past, in the case of a given elongation, the setting of the tension of the skin-passing unit on site only considered the treatment of plate shape defects and the limitation of the maximum...

AI Technical Summary

Problems solved by technology

In the past, in the case of a given elongation, the setting of the tension of the skin-passing unit on site only considered the treatment of plate shape defects and the limitation of the maximum rolling pressure, but did not consider defects such as forward slippage, vibration, and color difference. It may lead to unstable temper rolling, transverse stripes and color difference defects on the surface of the finished strip steel, resulting in product quality degradation and large economic losses to the unit

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