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Hot sprayed zinc-aluminium alloy wire rod and its preparing method

A zinc-aluminum alloy, thermal spraying technology, applied in the direction of coating, fusion spraying, metal material coating process, etc., to achieve the effect of good surface quality, excellent corrosion resistance and mechanical properties, and increase the density

Inactive Publication Date: 2005-05-18
INST OF OCEANOLOGY - CHINESE ACAD OF SCI +1
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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 zinc-aluminum alloy wire in the field of thermal spraying

Method used

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  • Hot sprayed zinc-aluminium alloy wire rod and its preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The weight percentages of the main elements of the wire are shown in Table 1.

[0022] Al

Mg

Ti

B

Fe+Si+Cu

Zn

15％

0.50％

0.50％

0.05％

≤1.00％

margin

[0023] preparation:

[0024] The structural schematic diagram of the horizontal continuous casting equipment adopted in the present invention is as follows: figure 1 . Among them: 1 is the heat preservation crystallization furnace; 2 is the crystallizer; 3 is the pressing roller; 4 is the pulling roller; 5 is the coiling device; 6 is the cooling water pipe;

[0025] 1) Preheat the crucible of the melting furnace to dark red, add zinc ingots with a mass fraction of 90%, then add aluminum ingots, heat and melt until the melt temperature reaches 923K or more, use a mass fraction of 0.1 ~ 0.3% of the refining agent ( In this embodiment, 0.2% zinc chloride is used for refining, the remaining zinc ingots are added, and the preheated aluminum-magn...

Embodiment 2

[0030] The difference from Example 1 is: the wire composition is: Al, 20%; RE, 0.5%; impurities, less than 1%; the balance Zn. The alloy wire wool is cast by the copper mold, the temperature of the alloy liquid in the furnace is stable at 60K higher than the melting point, the casting speed is 0.015m / 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 and reduced to φ2.00 after 8 times of drawing. +0.00 -0.10 mm of zinc-aluminum alloy wire products, and coiled into a circle.

Embodiment 3

[0032]The difference from Example 1 is that: the composition of the wire rod is: Al, 10%; RE, 0.06%; Mg, 0.03%; impurity, less than 1%; the balance is 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 0.015m / 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 hot sprayed Zn-Al alloy wire consists of Al 10-20 wt%, one or several of RE, Mg, Ti and B 0.006-1.5 wt% and impurity less than 1 wt%, except Zn. The preparation process of the hot sprayed Zn-Al alloy wire includes melting zinc ingot and aluminum ingot in an alloy smelting furnace and refining; adding intermediate alloy under stirring, letting stand, eliminating slag and continuous horizontal casting to obtain coarse Zn-Al alloy wire; homogenizing annealing and drawing to form Zn-Al alloy wire product. Spraying with the Zn-Al alloy wire can well protect base steel and prolong its service life.

Description

technical field [0001] The invention relates to a thermally sprayed alloy wire, in particular to a thermally sprayed zinc-aluminum alloy wire composition and a preparation method thereof. Background technique [0002] The thermal spraying process is used to spray zinc, aluminum or its alloy wire onto the surface of steel components to form a metal covering layer, which can protect steel facilities in various corrosive environments for a long time. Thermally sprayed zinc and thermally sprayed aluminum coatings have their own advantages, respectively. Thermally sprayed zinc coatings have good cathodic protection on steel, while thermally sprayed aluminum coatings have superior corrosion resistance and impact resistance. If it is combined and sprayed with zinc-aluminum alloy on steel, it can not only provide good cathodic protection performance, but also have corrosion resistance performance, which prolongs the life of steel. Therefore, zinc-aluminum alloy wire is trusted by p...

Claims

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Application Information

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IPC IPC(8): C23C4/06
Inventor 李焰曲立增马瑛张杰赵澎
Owner INST OF OCEANOLOGY - CHINESE ACAD OF SCI
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