Comprehensive tension matching method with goal of quality control in strip steel shearing process

Abstract

The invention relates to a comprehensive tension matching method with the goal of quality control in a strip steel shearing process. The comprehensive tension matching method mainly comprises the following steps of: (1), collecting product parameters; (2), collecting field process parameters; (3), calculating forward tension and backward tension; (4), judging whether a tension difference satisfies a lower limit and an upper limit of a limited domain or not; (5), calculating the total strip steel trimming quality function; (6), calculating the total strip steel trimming quality evaluation; and (7), performing a field test and quality evaluation, and calculating the optimal forward and backward tension set of a strip steel product. According to the comprehensive tension matching method disclosed by the invention, on one hand, the bearing capability of trimming equipment is considered; field accidents, such as slip, in a trimming process are completely eradicated; on the other hand, different requirements of different downstream users on the trimming quality are comprehensively considered; forward and backward tension set schemes are provided in a targeted manner; and the control and management level of the trimming quality can be practically improved.

Description

technical field [0001] The invention relates to the field of metallurgy, in particular to a quality control method for strip steel shearing. Background technique [0002] In the strip trimming process, the setting of the front and rear tension of the strip trimming equipment has a great influence on the strip shear quality. Many shear quality problems or equipment damage during the strip shearing process can be attributed to the front and rear tension. The tension setting is unreasonable. On the one hand, the setting of the front and rear tension of the shearing equipment at the shearing site is often determined according to the front and rear equipment and the front and rear processes, and little attention is paid to the tension requirements of the shearing equipment and the shearing process itself. In fact, the front and rear tension settings of the shearing equipment If the setting is unreasonable, it will also cause accidents such as slipping and chipping of the strip d...

AI Technical Summary

Problems solved by technology

For example, the Chinese patent CN201210021953.7 "A comprehensive optimization method for setting the reference tension before and after the disc shearing of the acid rolling mill" proposes a method for setting different shearing tensions for specific steel types, and determining the optimal shearing tension through field tests. shear tension, so as to achieve the optimal tension setting, however, this technology does not consider the balance of the front and rear tension for the search of the optimal shear tension, which may lead to strip slippage during the experiment, and this technology does not target the shear tension The objective of quality control is given a precise definition, making its implementation difficult in the field

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