Method for Quickly Removing Compaction Dross During the Production of Aluminum-Zinc-Silicon GL

A technology of galvanizing, aluminum-zinc-silicon coating, applied in hot-dip galvanizing process, coating, metal material coating process, etc., can solve problems such as harsh operating environment, average effect, and hardening, so as to improve the surface quality of products and shorten the Effects of cleaning time and reducing cleaning difficulty

Active Publication Date: 2019-04-26
HEBEI IRON AND STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This has caused a large amount of zinc slag, and a large amount of Fe floating on the liquid surface 2 Al 5 and FeAl 3 Si is easy to bind on the surface of the zinc pot, and in severe cases, it will cause hardening and affect production
[0005] Therefore, no matter how it is controlled, hardening of scum in zinc pots for the production of GL products is unavoidable and must be cleaned regularly. In the past, it was only possible to manually clean hardened scum with physical means such as air picks, which was time-consuming and laborious. The slag is completely cleaned up

Method used

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  • Method for Quickly Removing Compaction Dross During the Production of Aluminum-Zinc-Silicon GL
  • Method for Quickly Removing Compaction Dross During the Production of Aluminum-Zinc-Silicon GL
  • Method for Quickly Removing Compaction Dross During the Production of Aluminum-Zinc-Silicon GL

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: Taking slag removal as an example, the transition material is produced without stopping the vehicle. The specific process steps are as follows.

[0022] Before cleaning the slag, the distance of the specific liquid surface of the plate slag circle is 2cm, the height of the slag circle is 2cm, and the surface area of ​​the zinc pot is 14m 2 , the calculation shows that the volume of Al-Zn-Si ingot to be added is 0.56m 3 ; Add aluminum-zinc-silicon ingots to submerge the liquid surface of the zinc pot to harden the scum. Keep the zinc pot sensor running at high power, raise the temperature of the zinc liquid in the zinc pot to 650°C, and keep it warm for 0.5 hours according to the dissolution of the hardened scum to fully soften the hardened scum, and then manually use the scum scraper to clean the scum. After cleaning the scum, reduce the power of the zinc pot sensor to reduce the temperature of the zinc liquid to 600±5°C. After the liquid level and tempe...

Embodiment 2

[0023] Embodiment 2: Taking slag removal as an example, the transition material is produced without stopping the vehicle. The specific process steps are as follows.

[0024] Before cleaning the slag, the distance of the specific liquid surface of the plate slag circle is 4cm, the height of the slag circle is 3cm, and the surface area of ​​the zinc pot is 14m 2 , the calculation shows that the volume of Al-Zn-Si ingot to be added is 0.98m 3 ; Add aluminum-zinc-silicon ingots to submerge the liquid surface of the zinc pot to harden the scum. Keep the zinc pot sensor running at high power, increase the temperature of the zinc liquid in the zinc pot to 660°C, and keep it warm for 1 hour according to the dissolution of the hardened scum to fully soften the hardened scum, and then manually use the scum remover to clean the scum. After cleaning the scum, reduce the power of the zinc pot sensor to reduce the temperature of the zinc liquid to 600±5°C. After the liquid level and tempe...

Embodiment 3

[0025] Embodiment 3: Taking the slag cleaning combined with the replacement of three rollers and six arms requiring parking as an example, the specific process steps are as follows.

[0026] Before the production of GL slag removal, the distance of the specific liquid surface of the plate slag circle is 2cm, the height of the slag circle is 3cm, and the surface area of ​​the zinc pot is 14m 2 , the calculation shows that the volume of Al-Zn-Si ingot to be added is 0.7m 3 ; Add aluminum-zinc-silicon ingots to submerge the liquid surface of the zinc pot to harden the scum. Keep the zinc pot sensor running at high power, raise the temperature of the zinc liquid in the zinc pot to 640°C, and keep it warm for 0.5 hours according to the dissolution of hardened scum to fully soften the hardened scum, and then manually use the scum remover to clean the scum. After clearing the slag, put in a new three-roller six-arm and air knife; after replacing the three-roller six-arm, reduce the ...

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Abstract

The invention discloses a method for quickly removing hardened dross during aluminum-zinc-silicon-plated GL production. Before dross removal, aluminum-zinc-silicon is added to enable the hardened dross to be immersed in the liquid level of a zinc pot, then the temperature of zinc liquid of the zinc pot rises to 640 DEG C-660 DEG C, heat preservation is conducted to soften the hardened dross, and then dross removal is carried out. Reverse thinking is adopted for the method, the dross is soaked over zinc liquid temperature and liquid surface process control, the hardened dross is loosened and then concentrated to be cleaned, the dross cleaning time is shortened, and the cleaning difficulty is reduced. Working time for dross cleaning can be saved by 2-4 hours, the labor intensity of workers is relieved, the salvage rate of the dross is improved, and the product surface quality is improved.

Description

technical field [0001] The invention relates to a galvanizing method, in particular to a method for quickly removing hardened scum during the production of galvanized galvanized silicon. Background technique [0002] With the wide application of plates in construction, light industry, household appliances and automobile industries, the requirements for anti-corrosion and service life of materials are higher. Hot-dip galvanizing is also called hot-dip galvanizing. As an effective metal anti-corrosion method, it has been widely used in metal structure facilities in various industries. The zinc coating types of hot-dip galvanized coating materials currently mainly include Galvanized (GI), Galvaneal (GA), Galfan (GF), Galva-lume (GL) and so on. Aluminum-zinc-silicon GL products are widely used because of their good corrosion resistance (tests show that the corrosion resistance of GL is three to six times that of GI) and high temperature resistance, especially as color-coated su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C2/06C23C2/40
CPCC23C2/06C23C2/40
Inventor 孙力张鹏刘需吝章国刘宏强梁媛媛杨士弘
Owner HEBEI IRON AND STEEL
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