A method for optimizing the angle of a scraper of a sink roll and a stabilizing roll of a hot dip aluminized zinc unit

By establishing an optimization model for the scraper angle, the problem of blind scraper angle adjustment was solved, and precise control of scraper force was achieved, thereby improving the production quality and efficiency of the hot-dip aluminizing and zinc-plating unit.

CN117786930BActive Publication Date: 2026-07-03SHANGHAI MEISHAN IRON & STEEL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI MEISHAN IRON & STEEL CO LTD
Filing Date
2022-09-29
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

The existing scraper mechanism of hot-dip aluminized zinc galvanizing unit cannot adjust the scraper angle according to the actual working conditions, resulting in incomplete removal of zinc dross or improper scraper force, which affects the surface quality of the strip.

Method used

An optimization model for the scraper angle of the submerged roller and stabilizing roller in a hot-dip aluminizing and zinc galvanizing unit was established. By collecting equipment and process parameters, the external load and scraper angle were calculated using the strip element method to achieve precise control of the scraper angle.

Benefits of technology

The optimized scraper angle improved the zinc dross removal effect, avoided the problem of roller jamming or incomplete scraping, and improved the surface quality and production efficiency of the strip.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention relates to a method for optimizing the scraper angle of submerged rolls and stabilizing rolls in hot-dip galvanizing mills. The method includes the following steps: A) collecting equipment parameters of the submerged roll system of the galvanizing mill; B) collecting strip steel production process parameters; C) collecting scraper process parameters; D) using the strip element method to calculate the external load and its direction angle on each roll of the submerged roll system under dynamic conditions; E) setting the initial value of the process variable ξ1 = 0 for the submerged roll and stabilizing roll scraper angle optimization, the scraper angle optimization increment Δα, and assigning initial values ​​ξ to the process parameters. * =0, l * =0, D * =0, d * =0,L * =0, setting the maximum allowable zinc dross deposition amount Q on the submerged roller system surface. max F) Calculate the number of steps ε for optimizing the angle of the submerged roller and stabilizing roller scrapers, etc. This scheme effectively solves the problem that the scraper angle of the submerged roller system is difficult to adjust under normal working conditions, and achieves the optimization of the scraper angle.
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