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Alloy for carrying out corrosion-resistant hot-dip galvanization on surface of low-silicon active steel at low temperature

A technology of hot-dip galvanizing and silicon content, which is applied in the field of alloys, can solve the problems of difficult maintenance of the plating solution, and achieve the effects of short hot-dip time, low annual cost of funds, and excellent corrosion resistance

Inactive Publication Date: 2018-07-13
GUANGZHOU YUZHI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the electroless nickel plating method needs to be carried out at a higher temperature, and the maintenance of the plating solution is difficult

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] An alloy for corrosion-resistant hot-dip galvanizing on the surface of active steel with low silicon content at a low temperature of 360-450 degrees. In terms of weight percentage, the chemical composition of the alloy is: Li: 1.2wt.%, Nb: 0.5wt.%, In: 2.4wt.%, Co: 1.5wt.%, Sc: 1.2wt.%, Sm: 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 5-10m / min. The ingot can be used as raw material for hot-dip galvanizing for subsequent hot-dip galvanizing treatment to protect ...

Embodiment 2

[0020] An alloy for corrosion-resistant hot-dip galvanizing on the surface of active steel with low silicon content at a low temperature of 360-450 degrees. In terms of weight percentage, the chemical composition of the alloy is: Li: 1.4wt.%, Nb: 0.8wt.%, In: 2.5wt.%, Co: 1.8wt.%, Sc: 1.6wt.%, Sm: 0.6wt .%, 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 5-10m / min. The ingot can be used as raw material for hot-dip galvanizing for subsequent hot-dip galvanizing treatment to protect ...

Embodiment 3

[0023] An alloy for corrosion-resistant hot-dip galvanizing on the surface of active steel with low silicon content at a low temperature of 360-450 degrees. In terms of weight percentage, the chemical composition of the alloy is: Li: 1.5wt.%, Nb: 0.9wt.%, In: 2.5wt.%, Co: 1.8wt.%, Sc: 1.6wt.%, Sm: 0.6wt .%, 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 5-10m / min. The ingot can be used as raw material for hot-dip galvanizing for subsequent hot-dip galvanizing treatment to protect ...

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Abstract

The invention discloses an alloy for carrying out corrosion-resistant hot-dip galvanization on surface of low-silicon active steel at low temperature and a machining process thereof. The alloy is prepared from the following components in percentage by weight: 1.2-1.5wt% of Li, 0.5-1.0wt% of Nb, 2.0-3.0wt% of In, 1.5-2.0wt% of Co, 1.0-1.8wt% of Sc, 0.5-0.8wt% of Sm and the balance of zinc. Throughthe development of the alloy for hot-dip galvanization, the problems in application of the process of carrying out hot-dip galvanization on the active steel with 0.5-0.8wt% of silicon can be solved; the obtained galvanization layer has the mechanical property of the common non-active steel surface galvanization layer and also has the characteristics of low production cost and convenience in large-scale production.

Description

technical field [0001] The invention relates to the technical field of alloys, in particular to a zinc alloy. Background technique [0002] Steel has the advantages of good strength, formability, economical production and recyclability, and occupies a very important position in the process of industrial construction. However, steel easily reacts with the environment to form stable oxides or salts. Corrosion of steel reduces the service life of steel, brings huge economic losses to human beings, and seriously pollutes the environment. Therefore, people have adopted various protective technologies to improve the anticorrosion performance of steel. [0003] Since the standard electrode potential of zinc is negative to that of iron, the galvanized layer has the effect of sacrificial anode protection of the steel base in water and humid air, which can greatly prolong the service life of the steel. The galvanized layers commonly used in industry include hot-dip galvanized, elect...

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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