Zinc base alloy used for hot galvanizing on steel wire

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...

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 during the existing hot-dip galvanized aluminum, and to provide a zinc-based alloy that is easy to coat