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Method and system for forecasting C warping in hot galvanizing continuous annealing process

A hot-dip galvanizing and continuous annealing technology, applied in geometric CAD, special data processing applications, instruments, etc., can solve the problems of not providing control technology and methods in terms of mechanism

Pending Publication Date: 2021-11-09
YANSHAN UNIV
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  • Claims
  • Application Information

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Problems solved by technology

Based on the above-mentioned literature, the current methods of controlling C warping are more controlled from the perspective of existing equipment, but no control technology and methods are provided from the aspect of mechanism, and some scholars simply focus on the relevant factors that affect the mechanism of C warping research without providing relevant control strategies in conjunction with existing equipment

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  • Method and system for forecasting C warping in hot galvanizing continuous annealing process
  • Method and system for forecasting C warping in hot galvanizing continuous annealing process
  • Method and system for forecasting C warping in hot galvanizing continuous annealing process

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Embodiment 1

[0141] Taking the steel strip specification as 900mm×0.5mm, the C-seeker shape is predicted in the heating section of the continuous annealing process. Firstly, in step A, the strip specifications, process parameters of the soaking section, plate shape parameters at the exit of the unit, optimization process parameters, and the maximum value of the adjustment factor λ in the optimization recursive process are collected max and the maximum value of optimal recursion Δw max . The specifications of the collected strip include width B and thickness H. The process parameters of the soaking section include the set temperature T of the strip surface in this section s , Measured temperature T m , the total tension F in the furnace. The profile parameters of the unit outlet include the measured value of the warping distribution of the unit outlet profile w gm , the allowable deviation value ψ of warpage required by the product outline * . The optimized process parameters include...

Embodiment 2

[0168] Taking the steel strip size as 1000mm×1mm, the C-seeker shape prediction of the soaking section in the continuous annealing process is carried out. Firstly, in step A, the strip specifications, process parameters of the soaking section, plate shape parameters at the exit of the unit, optimization process parameters, and the maximum value of the adjustment factor λ in the optimization recursive process are collected max and the maximum value of optimal recursion Δw max . The specifications of the collected strip include width B and thickness H. The process parameters of the soaking section include the set temperature T of the strip surface in this section s , Measured temperature T m , the total tension F in the furnace. The profile parameters of the unit outlet include the measured value of the warping distribution of the unit outlet profile w gm , the allowable deviation value ψ of warpage required by the product outline * . The optimized process parameters incl...

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Abstract

The invention relates to a method and a system for forecasting C warping in a hot galvanizing continuous annealing process. According to the C-warping forecasting method in the hot galvanizing continuous annealing process, the equipment and process characteristics of a galvanizing continuous annealing unit are comprehensively considered, the combined action of longitudinal tensile stress and thermal stress of strip steel in a continuous annealing furnace is considered, and the transverse extensions of the strip steel in the thickness direction are different, so that the C-warping essence is generated. Starting from an influence C warping mechanism and related influence factors, the plate shape of each process section in the continuous annealing furnace is forecasted through process parameters of each process section in the continuous annealing furnace, the plate shape of a certain process section in the continuous annealing furnace is forecasted by adopting an optimization recursion method based on the outlet plate shape and the process parameters of each furnace section, and the method is used for forecasting the warping distribution of the plate shape in the continuous annealing furnace in real time, and theoretical basis and technical support are provided for follow-up in-furnace plate shape warping control, a huge role is played in field equipment technology improvement, then the problem that the in-furnace plate shape cannot be predicted is solved, and theoretical basis and technical approach are provided for technological parameter optimization of all technological sections.

Description

technical field [0001] The invention relates to the field of plate shape detection in the continuous annealing process of galvanizing, in particular to a method and system for predicting C warping in the continuous annealing process of hot-dip galvanizing. Background technique [0002] Galvanizing is the last process in strip production. Its purpose is to improve the aesthetics and corrosion resistance of the product. The strip galvanizing process mainly includes two parts: continuous annealing process and hot-dip galvanizing process. After the unfinished steel strip is cleaned, it enters the continuous annealing furnace for annealing process, which requires four sub-processes of preheating, heating, soaking, and cooling. [0003] When the strip steel needs to be heated to the annealed state in the continuous annealing furnace, the structure of the strip material changes from broken fine grains to coarse and complete grains, improving its plasticity. In order to make it mee...

Claims

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Application Information

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IPC IPC(8): G06F30/20G06F30/17G06F119/08G06F119/14
CPCG06F30/20G06F30/17G06F2119/14G06F2119/08
Inventor 白振华王孝建钱胜顾清
Owner YANSHAN UNIV
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