Preparing method for ultra-thin galvanized plate

A galvanized sheet, ultra-thin technology, applied in hot-dip plating process, coating, metal material coating process and other directions, can solve the problems of not achieving good results, poor economic benefits, polluting the environment, etc., to improve product quality , Increase the temperature and ensure the effect of hardenability

Inactive Publication Date: 2018-12-18
山东省博兴县云光钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From the 1950s to the 1960s, 13 single-sheet steel flux hot-dip galvanizing units were successively built, with a capacity of 100,000 t/a. successively stop and change production
Although there are many kinds of thin-plate galvanized products on the market, the quality can really be stable, especially the ultra-thin galvanized s

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0022] Example 1:

[0023] A preparation method of ultra-thin galvanized sheet includes the following steps:

[0024] (1) Steel strip pretreatment: the carbon steel cold-rolled sheet is first brushed with 5% hydrochloric acid and then washed with water; then washed with 22% sodium hydroxide, then washed with water, and finally with water Dry after spray washing treatment;

[0025] (2) The configuration of the zinc pot solution: the weight percentage of the chemical composition in the zinc pot solution is Al (aluminum): 24.51%, Fe (iron): 0.379%, B (boron): 0.0002%, Mg (magnesium): 0.0140 %, Cu (copper): 0.0231%, Mn (manganese): 0.0055%, Si (silicon): 0.171%, Pb (lead): 0.066%, Sb (antimony): 0.0188%, Ti (titanium): 0.0135%, Sn (tin): 0.053%, Cd (cadmium): 0.041%, Cr (chromium): 0.050%, Zn (zinc): 74.6549%;

[0026] (3) Steel strip annealing treatment: Put the steel strip pretreated in step 1) into the annealing reduction furnace, change the process control mode of the annealing redu...

Example Embodiment

[0032] Example 2:

[0033] A preparation method of ultra-thin galvanized sheet includes the following steps:

[0034] (1) Steel strip pretreatment: the carbon steel cold-rolled sheet is first brushed with 5% hydrochloric acid, then rinsed with water; then washed with 25% sodium hydroxide, then washed with water, and finally with water Dry after spray washing treatment;

[0035] (2) The configuration of the zinc pot solution: the weight percentage of the chemical composition in the zinc pot solution is Al (aluminum): 24.51%, Fe (iron): 0.379%, B (boron): 0.0002%, Mg (magnesium): 0.0140 %, Cu (copper): 0.0231%, Mn (manganese): 0.0055%, Si (silicon): 0.171%, Pb (lead): 0.066%, Sb (antimony): 0.0188%, Ti (titanium): 0.0135%, Sn (tin): 0.053%, Cd (cadmium): 0.041%, Cr (chromium): 0.050%, Zn (zinc): 74.6549%;

[0036] (3) Steel strip annealing treatment: Put the steel strip pretreated in step 1) into the annealing reduction furnace, change the process control mode of the annealing reducti...

Example Embodiment

[0042] Example 3:

[0043] A preparation method of ultra-thin galvanized sheet includes the following steps:

[0044] (1) Steel strip pretreatment: the carbon steel cold-rolled sheet is first scrubbed with 5% hydrochloric acid, then rinsed with water; then after scrubbing with 30% sodium hydroxide, then scrubbed with water, and finally with water Dry after spray washing treatment;

[0045] (2) The configuration of the zinc pot solution: the weight percentage of the chemical composition in the zinc pot solution is Al (aluminum): 24.51%, Fe (iron): 0.379%, B (boron): 0.0002%, Mg (magnesium): 0.0140 %, Cu (copper): 0.0231%, Mn (manganese): 0.0055%, Si (silicon): 0.171%, Pb (lead): 0.066%, Sb (antimony): 0.0188%, Ti (titanium): 0.0135%, Sn (tin): 0.053%, Cd (cadmium): 0.041%, Cr (chromium): 0.050%, Zn (zinc): 74.6549%;

[0046] (3) Steel strip annealing treatment: Put the steel strip pretreated in step 1) into the annealing reduction furnace, change the process control mode of the annea...

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Abstract

The invention discloses a preparing method for an ultra-thin galvanized plate. The technological control mode of an annealing reduction furnace is changed, it is ensured that the temperature of the annealing furnace is about 550 DEG C-600 DEG C, the annealing effect and levelness of a plate face are ensured, and heated force of all sections is more uniform. A W-shaped radiant tube of a heating assembly resistance belt is changed into a U-shaped radiant tube, the power of a heating assembly of a soaking zone of a rear area is improved, the temperature of the soaking zone of the rear area is improved, it is ensured that the technology pot entering temperature is about 550 DEG C, and the product quality is improved. The lining pulling tension machine roller diameters of all sections are reduced, the wrap angle of the steel belt plate face is reduced, and the lining pulling force of the steel belt plate face can be more uniform. A boron element is added in a steeping zinc pot, the surfacehardening capability of a soaked steel belt is ensured, the surface hardness of the steel belt is improved, and stability of the plate pattern of the finished product is ensured.

Description

technical field [0001] The invention relates to the technical field of manufacturing metal building materials, in particular to a method for preparing an ultra-thin galvanized sheet. Background technique [0002] The development of hot-dip galvanizing production in my country has been lagging behind. From the 1950s to the 1960s, 13 single-sheet steel flux hot-dip galvanizing units were successively built, with a capacity of 100,000 t / a. Stopped and changed production successively. From the late 1970s, my country began to build large-scale broadband hot-dip galvanizing units. [0003] Hot-dip galvanized steel strips have always been in short supply in the Chinese market. Since the mid-1990s, about 800,000 to 1 million tons have been imported from abroad every year. With the development of the domestic economy, especially the development of automobiles, home appliances and construction industries, the demand for galvanized strip steel has also increased greatly. [0004] ...

Claims

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Application Information

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IPC IPC(8): C23C2/40C23C2/06C22C18/04C23C2/02
CPCC22C18/04C23C2/02C23C2/06C23C2/40
Inventor 郭建伟李建光孙新新张伟伟
Owner 山东省博兴县云光钢铁有限公司
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