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Zinc alloy for hot dip

A zinc alloy and hot-dip galvanizing technology, which is applied in the field of zinc alloy for hot-dip galvanizing, can solve the problems that zinc alloy cannot be applied to hot-dip, the increase of zinc alloy liquid iron particles, and zinc waste, so as to solve the problem of poor coating adhesion and reduce raw material cost, and the effect of reducing the generation of bottom dross

Inactive Publication Date: 2018-04-03
ZHUZHOU SMELTER GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention effectively solves the technical problems in the prior art that existing zinc alloys cannot be applied to hot-dip on the surface of steel materials with complex components and structures, zinc alloy liquid iron particles increase, and more bottom slag is produced, resulting in zinc waste

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A zinc alloy S1 for hot dipping, its composition is 20.0wt% Al, 0.1wt% Ni, 0.1wt% Mn, 0.05wt% Sn, 0.05wt% Cr, 0.01wt% RE (LaCe mixed) , and the balance is unavoidable impurities brought by Zn and zinc alloys.

[0018] Using the zinc alloy S1 for hot dipping in this example to hot-dip steel pipes for 1.5 minutes, the thickness of the formed coating is uniform, and the thickness distribution of the coating is 50-70 μm. Monthly hot-dip galvanized alloy liquid iron content maintained at 0.0083%.

Embodiment 2

[0020] A zinc alloy S2 for hot dipping, its composition is 0.2wt% Al, 0.1wt% Ni, 0.1wt% Mn, 0.05wt% Sn, 0.05wt% Cr, 0.15wt% RE (LaCe mixed) , and the balance is unavoidable impurities brought by Zn and zinc alloys.

[0021] Adopt zinc alloy S2 for hot dipping of this embodiment to hot-dip galvanize strip steel for 15 seconds, the thickness of the formed coating is uniform, and the thickness distribution of the coating is 10-30 μm, the adhesion test is good, the coating is bright and clean, and there is very little bottoming. Slag, half a month hot-dip galvanized alloy liquid iron content maintained at 0.0014%.

Embodiment 3

[0023] A zinc alloy S3 for hot dipping, its composition is 5wt% Al, 0.2wt% Ni, 0.3wt% Mn, 0.2wt% Sn, 0.1wt% Cr, 0.05wt% RE (LaCe mixed), The balance is unavoidable impurities contained in Zn and zinc alloys.

[0024] Adopt zinc alloy S3 for hot-dipping of the present embodiment to hot-dip 3 minutes on the high-silicon high-manganese steel big tube tower piece with disk at both ends, the coating thickness that forms is uniform, and coating thickness distribution is 85-115 μ m, adhesion force The test is good, the coating is bright and clean, very little bottom dross is produced, and the iron content of the hot-dip galvanized alloy liquid is maintained at 0.0056% for half a month.

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Abstract

The invention provides a zinc alloy for hot dip. By taking the total mass of the zinc alloy for the hot dip as a reference, the zinc alloy for the hot dip comprises 0.2-20.0wt% of Al, 0.1-0.3wt% of Ni, 0.1-0.5wt% of Mn, 0.05-0.5wt% of Sn, 0.05-0.2wt% of Cr, 0.01-0.15wt%RE (La and Ce mixture), and the balance Zn and unavoidable impurities carried by the zinc alloy. The zinc alloy for the hot dip can reduce or maintain the contents of harmful impurities and the iron element of liquid zinc of a galvanizing pot within a low range, the quantity of zinc dross generated by galvanization is reduced, an alloy coating formed after the hot dip is uniform in thickness, has no color difference, sandelin effect or redundant list edges, and has relatively high coating quality.

Description

technical field [0001] The invention belongs to the technical field of hot-dip galvanizing, and in particular relates to a zinc alloy for hot-dip galvanizing. Background technique [0002] With the rapid development of military industry, automobile, shipbuilding, home appliances, construction and other industries, the demand for hot-dip galvanized products is increasing year by year, and the requirements for product quality are constantly improving. The principle of hot-dip galvanizing is: clean the steel structure, then solvent treatment, after drying, immerse in the zinc solution, the iron on the surface of the steel structure reacts with the molten zinc, and forms an alloy coating on the surface of the steel structure. In order to reduce costs, improve the corrosion resistance, surface characteristics and good mechanical properties of hot-dip galvanized products, reduce the amount of bottom slag generated, and reduce the effective zinc waste caused by salvaging bottom sla...

Claims

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Application Information

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IPC IPC(8): C22C18/04C22C18/00C23C2/06
CPCC22C18/04C22C18/00C23C2/06
Inventor 张伟王策柳承辉徐军
Owner ZHUZHOU SMELTER GRP
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