Hot galvanizing steel wire-10% aluminum-rare-earth alloy molten solution

Abstract

The invention relates to a hot-dip galvanized steel wire-10% aluminum-rare earth alloy solution of hot-dip coating steel wire comprises 8.3-15% of Al, 0.11-0.30% of Ce+La, less than or equal to 0.075 % of Fe, less than or equal to 0.015% of Si, less than or equal to 0.005% of Pb, less than or equal to 0.005% of Cd, less than or equal to 0.002% of Sn and less than or equal to 0.02% of every other element; the total quantity of other elements is less than or equal to 0.04%, and the rest is Zn. The invention has the advantages that 1. by utilizing the cathodic protection function of Zn, the Zn and the Al are used for generating an Al2O3 protecting film on the surface of the steel wire, so that the corrosion-resistant performance of the steel wire is greatly improved; 2. rare earth is used for improving the condition of hot-dip coating, so as to greatly improve the fluidity and wetting quality of plating solution, and effectively inhibit grain-boundary corrosion; 3. hot-dip coating can be carried out at the temperature of below 480 DEG C, and enough plating thickness and steel material mechanical property can be obtained, so that the popularization value is good.

Description

technical field [0001] The invention relates to a steel wire hot-dip galvanized-10% aluminum-rare earth alloy melt used for hot-dip steel wire, and belongs to the field of hot-dip steel wire manufacturing. Background technique [0002] 1. No. CN1053268A, name "High Corrosion-resistant Double Dip Hot-dipping Process for Steel Wire", the steel wire is first galvanized in tank A, and after the alloying heat treatment of the coating, it is then hot-dip galvanized in tank B (aluminum ) and their alloys. [0003] 2. Zinc-55% aluminum-1.6 silicon alloy has very good corrosion resistance due to its high aluminum content, but due to its high melting point, it needs to be hot-dipped at a temperature above 600 ° C, and it is difficult to obtain sufficient coating thickness And the mechanical properties of steel, so it has been promoted in the field of steel strips, but it has not been promoted in the field of steel wires. Contents of the invention [0004] Design purpose: To avoid ...

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Problems solved by technology

[0003] 2. Zinc-55% aluminum-1.6 silicon alloy has very good corrosion resistance due to its high aluminum content, but due to its high melting point, it needs to be hot-dipped at a temperature above 600 ° C, and it is difficult to obtain sufficient coating thickness and steel mechanical properties, so it has been promoted in the field of steel strips, but not in the field of steel wires