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B-and-Mn-containing zinc alloy with zinc-pot corrosion resistance for hot-dip galvanizing

A hot-dip galvanizing and corrosion-resistant technology, which is applied in the field of alloys, can solve problems such as high hot-dipping temperature, long hot-dipping time, and zinc pot deformation, and achieve short hot-dipping time, improved corrosion resistance, and improved corrosion resistance Effect

Inactive Publication Date: 2018-08-14
GUANGZHOU YUZHI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, these methods only slow down the zinc corrosion of zinc pots to a certain extent
In addition, the hot soak temperature is high and the hot soak time is long, and the tendency to deform or even crack the zinc pot is serious

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A zinc alloy containing B and Mn for hot-dip galvanizing that exhibits corrosion resistance to zinc pots when used at 360-450 degrees. In terms of weight percentage, the chemical composition of the alloy is: Ca: 0.3wt.%, Co: 0.2wt.%, Bi: 1.5wt.%, Mn: 0.8wt.%, Sn: 2.0wt.%, B: 0.4wt .%, the balance is zinc. The preparation method of the alloy: add the above-mentioned raw materials into the atmosphere-protected induction furnace, and use a silicon carbide crucible; induction heating to 500-600 degrees to form an alloy solution, and use the electromagnetic stirring effect to fully stir for about 10 minutes; put the alloy The liquid is kept at 500-600 degrees for 10 minutes and then cast into the equipment at the same level as the hot top for semi-continuous casting into the required round ingot. The ingot moves down at a speed of 5-8m / min. The ingot can be used as hot-dip galvanizing raw material for subsequent hot-dip galvanizing treatment to protect steel wires. The work...

Embodiment 2

[0021] A zinc alloy containing B and Mn for hot-dip galvanizing that exhibits corrosion resistance to zinc pots when used at 360-450 degrees. In terms of weight percentage, the chemical composition of the alloy is: Ca: 0.4wt.%, Co: 0.2wt.%, Bi: 1.8wt.%, Mn: 0.8wt.%, Sn: 2.4wt.%, B: 0.4wt .%, the balance is zinc. The preparation method of the alloy: add the above-mentioned raw materials into the atmosphere-protected induction furnace, and use a silicon carbide crucible; induction heating to 500-600 degrees to form an alloy solution, and use the electromagnetic stirring effect to fully stir for about 10 minutes; put the alloy The liquid is kept at 500-600 degrees for 10 minutes and then cast into the equipment at the same level as the hot top for semi-continuous casting into the required round ingot. The ingot moves down at a speed of 5-8m / min. The ingot can be used as hot-dip galvanizing raw material for subsequent hot-dip galvanizing treatment to protect steel wires. The work...

Embodiment 3

[0024] A zinc alloy containing B and Mn for hot-dip galvanizing that exhibits corrosion resistance to zinc pots when used at 360-450 degrees. In terms of weight percentage, the chemical composition of the alloy is: Ca: 0.8wt.%, Co: 0.3wt.%, Bi: 2.5wt.%, Mn: 1.0wt.%, Sn: 2.6wt.%, B: 0.5wt .%, the balance is zinc. The preparation method of the alloy: add the above-mentioned raw materials into the atmosphere-protected induction furnace, and use a silicon carbide crucible; induction heating to 500-600 degrees to form an alloy solution, and use the electromagnetic stirring effect to fully stir for about 10 minutes; put the alloy The liquid is kept at 500-600 degrees for 10 minutes and then cast into the equipment at the same level as the hot top for semi-continuous casting into the required round ingot. The ingot moves down at a speed of 5-8m / min. The ingot can be used as hot-dip galvanizing raw material for subsequent hot-dip galvanizing treatment to protect steel wires. The work...

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Abstract

The invention discloses a B-and-Mn-containing zinc alloy with zinc-pot corrosion resistance for hot-dip galvanizing and a processing technology thereof. The B-and-Mn-containing zinc alloy comprises the components of, by weight, 0.3-0.8% of Ca, 0.2-0.4% of Co, 1.5-2.8% of Bi, 0.8-1.2% of Mn, 2.0-3.0% of Sn, 0.4-0.6% of B and the balance zinc. When the B-and-Mn-containing zinc alloy for hot-dip galvanizing is used for hot-dip galvanizing, the extremely excellent protective effect can be achieved on a zinc pot under 360-450 DEG C, and thus the service life of the zinc pot is prolonged by 10 timesor above; and additionally, the B-and-Mn-containing zinc alloy further has the advantages of being low in production temperature and short in hot-dip time and the characteristic of facilitating massproduction.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to a zinc alloy. Background technique [0002] It is well known that ZnO, Zn(OH) 2 And basic zinc carbonate protective film, to a certain extent slow down the corrosion of zinc, this protective film (also known as white rust) will form a new film if it is damaged. Galvanized metal material is a practical and effective anti-corrosion method. After the material is galvanized, because the electrode potential of zinc is higher than that of the base material, as a sacrificial anode, the base material is effectively protected and the corrosion resistance of the material is improved. . Hot-dip galvanizing is to immerse the cleaned and activated steel products in molten zinc solution, and coat the surface of the steel products with a zinc alloy coating with good adhesion through the reaction and diffusion between iron and zinc. [0003] Hot-dip galvanizing has a series of advantages: 1:) ...

Claims

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Application Information

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IPC IPC(8): C22C18/00C22C1/02C23C2/06
CPCC22C18/00C22C1/02C23C2/06
Inventor 杨长江
Owner GUANGZHOU YUZHI TECH CO LTD
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