A rolling control method based on the radius of the base circle of the ribbed steel bar rolling pass

Abstract

The invention discloses a rolling control method based on the ribbed bar rolling hole-type base circle radius. The method comprises the steps of model building, model configuring, rule building and process controlling. The method is carried out from the computational formula of the hot-rolled ribbed bar rolling hole-type base circle radius; production technological parameters collected by an existing production process control system are associated with the national standard stipulation; equipment rolling parameters and macro product parameters which are not associated originally are closely combined together through the mathematical function relationship; a corresponding function relation of base circle radius related parameters and product production rolling process technological parameters is built; intelligent learning and fuzzy control in the production technology rolling process can be achieved, and finally a set of rolling equipment parameters and a set of finished product technological parameters which can be applied to actual production guidance or production process controlling can be obtained. Therefore, the quality control level of the hot-rolled ribbed bar base circle radius is improved, and the automatic control over the intelligence of the mill base circle radius can be achieved.

Description

technical field [0001] The invention belongs to the technical field of industrial automation, and in particular relates to a production process control method based on real-time base circle radius parameters in ribbed steel bar rolling, which can improve the rolling quality control level and facilitate automatic production. Background technique [0002] Ribbed steel bars are made of ordinary wires and bars that are cold-rolled or hot-rolled and extruded into ribbed steel bars, commonly known as rebars. Because their strength is higher than that of primary steel, they are widely used in civil engineering construction such as houses, bridges, and roads. . [0003] For hot-rolled ribbed steel bars, after years of data collection and production practice, the radius of the base circle (that is, the R system) has the greatest impact on the specification accuracy. In actual production, if the radius of the base circle can be accurately controlled, it will not only ensure that the ...

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Problems solved by technology

This method mainly relies on the working experience of rolling mill technicians. There are many uncertain factors in the adjustment of rolling mills, such as rolling temperature, rolling mill pass wear, and small fluctuations in the size of incoming materials, which will cause changes in the specifications of rolled products, resulting in The rolling quality is unstable; in addition, due to the thermal expansion coefficient of hot-rolled ribbed steel bars, the pass design formula is extremely complicated (trigonometric functions, square roots, etc.), and the purely theoretical pass design will easily cause data deviation, In the process of tooling development for new specifications of ribbed steel bars, the rolling pass tooling needs to be repeatedly modified and debugged according to the actual trial production situation, resulting in high intensity of debugging work, and also affects the production efficiency of the rolling mill, making it difficult to adapt to the multi-variety of the market change in demand

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