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Hot spraying aluminium-zinc alloy wire rod and method for making same

A technology of alloy wire and thermal spraying, which is applied in the direction of coating, molten spraying, metal material coating process, etc., to achieve good surface quality, excellent corrosion resistance and mechanical properties, and increase the effect of compactness

Inactive Publication Date: 2005-06-22
INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no relevant report on the production of Al-Zn alloy wire in the field of thermal spraying

Method used

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  • Hot spraying aluminium-zinc alloy wire rod and method for making same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The weight percentages of the main elements of the wire rod are shown in Table 1.

[0023] Al

RE

Ti

B

Fe+Si+Cu

Zn

55％

0.2％

0.3％

0.06％

≤1％

margin

[0024] preparation:

[0025] The structural schematic diagram of the horizontal continuous casting equipment adopted in the present invention is as follows figure 1 . Among them: 1 is heat preservation crystallization furnace; 2 is crystallizer; 3 is pressing roll; 4 is pulling roll; 5 is coiling device; 6 is cooling water pipe;

[0026] 1) Preheat the crucible of the smelting furnace to dark red, add zinc ingots with a mass fraction of 90%, then add aluminum ingots, heat and melt, and when the temperature of the melt reaches 923K or more, use a refining agent with a mass fraction of 0.1 to 0.3% ( This embodiment adopts 0.2% zinc chloride) to refine, add the remaining zinc ingots, and use a graphite bell jar to melt the preheated alu...

Embodiment 2

[0030] The difference from Example 1 is that: the composition of the wire rod is: Al, 55%; RE, 0.03%; Ti, 0.05%; impurity, less than 1%; the balance Zn. Copper crystallizer is used to cast alloy wire wool, the alloy liquid temperature in the furnace is stable at 60K higher than the melting point, the casting speed is 0.020m / s, and the cooling water pressure is 0.15×10 5 Pa, the outlet water temperature is 308K. The rough rough wire is subjected to 3.0hr homogenization annealing treatment at 513K, and then drawn 8 times and reduced to φ2.00 +0.00 -0.10 mm aluminum-zinc alloy wire products, and coiled into coils.

Embodiment 3

[0032] The difference from Example 1 is that: the composition of the wire rod is: Al, 55%; RE, 0.18%; impurity, less than 1%; and the balance Zn. Copper crystallizer is used to cast alloy wire wool, the alloy liquid temperature in the furnace is stable at 80K higher than the melting point, the casting speed is 0.018m / s, and the cooling water pressure is 0.12×10 5 Pa, the outlet water temperature is 308K. The rough rough wire is subjected to homogenization annealing treatment at 493K for 3.0hr.

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Abstract

The invention relates to a heat spraying aluminium zinc alloy wire rod composition and its preparing process, wherein the constituents (by weight percentage) of the wire rod include Al 54-56%, 0.004%<=M<=1.08%, impurity whose total amount is less than 1%, and balancing Zn, M is any one or the combination of RE, Mg, Ti or B.

Description

technical field [0001] The invention relates to a thermal spraying alloy wire, in particular to a thermal spraying aluminum-zinc alloy wire and a preparation method thereof. Background technique [0002] The thermal spraying process is used to spray zinc, aluminum or its alloy wires on the surface of steel components, which can protect steel facilities in various corrosive environments for a long time. Generally speaking, thermal sprayed zinc coating has good cathodic protection effect on steel, while thermal sprayed aluminum coating has superior corrosion resistance and impact resistance. If it is combined, the alloy of zinc and aluminum is sprayed on the steel, which can not only provide good cathodic protection performance, but also have corrosion resistance, prolonging the life of the steel. At present, zinc-15% aluminum alloy wire is commonly used in China, and its weakness is that it is prone to intergranular corrosion; in comparison, the corrosion resistance of alumi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C4/06C23C4/08
Inventor 李焰马瑛张杰赵澎
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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