Comprehensive setting method for tension and rolling pressure in VC (Variable Crown) roll temper mill wet leveling process

Abstract

The invention provides a comprehensive setting method for tension and rolling pressure in a VC (Variable Crown) roll temper mill wet leveling process and belongs to the field of controlling. The comprehensive setting method comprises the following steps: related parameters are set by a temper mill control computer; related data or operational plans are acquired by the control computer through an input device or a superior computer; all operational parameters of the temper mill are controlled according to a pre-setting control mode, a method or setting parameters; all original values and optimizing step lengths are set according to equipment, technologies and quality parameters; under the premise of making ' taking rolling stability as optimized objective function and the finished product shapes, mechanical properties and surface roughness are qualified' as a constraint condition, three parts of metal model parameters such as rolling pressure, forwards and backwards tension and the like are taken as a whole to be set harmoniously; the rolling force and the forwards and backwards tension are set optimally; under the premise of guaranteeing product mechanical properties, the product mechanical properties, comprehensive control capability of the shapes and surface quality are improved, the production efficiency is guaranteed and the product quality is improved simultaneously.

Description

technical field [0001] The invention belongs to the field of metal machining, and in particular relates to a control method for production equipment of metal plate products. Background technique [0002] With the increasing demand of industries such as household appliances, automobiles, electronics, construction, shipbuilding, military industry, and aerospace, the strip production industry has developed rapidly. Today, the strip ratio has become one of the important symbols to measure the level of a country's steel industry. [0003] As the process closest to the finished product in the production of cold-rolled strip, 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 on the surface of the strip. To achieve the purpose of improving the strip coating performance and formability. [0004] With the continuous improvement of users' requirements...

AI Technical Summary

Problems solved by technology

If the parameter setting of the metal model is seriously unreasonable and exceeds the controllable range of the parameters of the roll system, then unqualified products will be generated, resulting in downgrading and bringing large economic losses to the unit

For example, if the setting of rolling pressure and tension is unreasonable, so that the lower limit of elongation is taken under the premise of satisfying the mechanical properties, it may cause the roughness reproduction rate to be low, resulting in a small roughness of the finished product

In particular, for wet temper rolling, the setting of metal model parameters must not only consider quality indicators such as plate shape, mechanical properties, and surface roughness, but also consider rolling stability, and no slippage, vibration, etc. The problem is that this is different from dry temper rolling, and it is often easily overlooked by the site, resulting in unstable rolling and affecting rolling efficiency and product quality

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