An intelligent zinc addition device with the function of controlling effective aluminum content and its control method

Abstract

The invention discloses an intelligent zinc-adding device and a control method with the function of controlling effective aluminum content, comprising a zinc pot, a zinc-adding hoist, a laser effective aluminum online detection system and a control system, and the zinc-adding hoist is arranged on the zinc pot Above, there are liquid level detection sensors and zinc liquid temperature sensors in the zinc pot. The laser effective aluminum online detection system includes a laser effective aluminum online detection head. The laser effective aluminum online detection head is immersed in the zinc liquid. Heavy lifting, laser effective aluminum online detection system, liquid level detection sensor and zinc liquid temperature sensor connection. The on-line control of the effective aluminum content in the zinc liquid and the continuity in the zinc adding process are realized, which greatly reduces the probability of zinc slag in the zinc liquid, improves the production quality of strip steel, and improves the safety of production and the stability of production process. .

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to an intelligent zinc adding device and a control method capable of controlling effective aluminum content. Background technique [0002] High-quality hot-dip galvanized sheets are widely used in automobiles, home appliances and other industries, and have a large demand and broad prospects. During the galvanizing process, the fluctuation of the zinc liquid level in the zinc pot, the change of the zinc bath temperature and the effective aluminum content are related to The generation of zinc dross is closely related, and the generation of zinc dross seriously restricts the improvement of strip surface quality. Different types of hot-dip galvanized products have different requirements for the temperature of the zinc bath and the effective aluminum in the zinc bath. It is necessary to dynamically adjust the composition of the zinc bath for different products to improve the surface q...

AI Technical Summary

Problems solved by technology

[0003] At present, some cold rolling mills have invested in automatic zinc adding devices, but their control targets are all focused on the stability of the liquid level in the zinc pot. The Chinese invention patent "A Zinc Melting Device for Hot-dip Galvanizing Unit" with the publication number CN102230149B provides A zinc melting device, which realizes closed-loop control on the change of the liquid level of the zinc liquid surface, and solves the problem that the temperature of the zinc liquid fluctuates greatly due to the difficulty in controlling the speed of manual zinc addition, but the hanging of zinc ingots still requires manual participation; the publication number is CN102373391B The Chinese invention patent "An Automatic Zinc Adding Device and Its Control Method" provides an automatic zinc adding device and its control method, which can realize the full automation of the zinc adding process, including the lifting of zinc ingots. The automation of the zinc process to replace manual operations does not take into account the stability of the composition of zinc ingots

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