Zinc base alloy used for hot galvanizing on steel wire

A technology of hot-dip galvanizing and zinc-aluminum alloy, applied in the field of hot-dip galvanizing, can solve the problem of low primary coating amount, and achieve the effect of good corrosion resistance and dense coating

Inactive Publication Date: 2013-03-13
无锡常安通用金属制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of low one-time coating amount du

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Add 50kg of aluminum ingots, 949.75kg of zinc ingots, 0.2kg of magnesium bars, 0.03kg of strontium grains and 0.02kg of indium powder into the melting furnace. It is then poured into a bar shape.

Embodiment 2

[0012] Add 45kg of aluminum ingots, 954.54kg of zinc ingots, 0.4kg of magnesium bars, 0.05kg of strontium grains and 0.01kg of indium powder into the melting furnace. It is then poured into a bar shape.

[0013] Adopt the alloy of above-mentioned embodiment 1 to carry out hot-dip plating to steel wire, when steel wire travel speed is 12m / min, once plating alloy weight can reach 420~450g / m 2 . However, if the conventional 5% aluminum-zinc alloy is used, and the other process conditions are the same, the weight of the one-time plating alloy is only 150-170g / m 2 .

[0014] Accelerated corrosion test of steel wire after hot-dip zinc-based alloy of the present invention: 5% NaCl solution, test temperature 35±2°C, no red rust was found in the test for 180 hours.

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PUM

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Abstract

The invention discloses a zinc base alloy used for hot galvanizing on a steel wire. The zinc aluminium alloy comprises the following components in percentage by weight: 4.5-5% of aluminium, 0.02-0.04% of magnesium, 0.003-0.005% of strontium, 0.001-0.002% of indium and the balance of zinc. By adopting the zinc aluminium alloy disclosed by the invention, once alloy plating weight can reach 420-450g/m<2>, and the coating is compact and uniform and has good corrosion resistance.

Description

technical field [0001] The invention belongs to the field of hot-dip galvanizing, and in particular relates to a zinc-based alloy used for hot-dip galvanizing of steel wires. Background technique [0002] Iron and steel products are widely used in various fields of national life, and a large amount of scrap steel is caused by corrosion every year. At present, in order to prevent the corrosion of steel and steel products, the surface is usually coated with a zinc layer as a sacrificial anode. Adding a small amount of aluminum to the pure zinc coating can eliminate the iron-zinc alloy layer at the zinc-iron interface, making the plated parts more processable. When the added aluminum reaches 5%, the coating has both the anti-corrosion features of pure zinc and pure aluminum coatings However, when the aluminum content exceeds 0.03%, the probability that the steel surface cannot be plated increases greatly, resulting in the thickness of the coating being too thin to meet the proc...

Claims

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Application Information

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IPC IPC(8): C22C18/04C23C2/06
Inventor 高熠辉
Owner 无锡常安通用金属制品有限公司
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