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A kind of seawater corrosion-resistant copper alloy containing zirconium and its preparation method

A copper alloy and seawater-resistant technology, applied in the field of non-ferrous metals, can solve the problems of high cost and poor processing performance, and achieve the effect of low cost, good processing performance and high hardness

Active Publication Date: 2017-07-18
UNIV OF SHANGHAI FOR SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the above-mentioned technical problems in the prior art, the present invention provides a seawater corrosion-resistant copper alloy containing zirconium and a preparation method thereof. The seawater corrosion-resistant copper alloy containing zirconium and its preparation method need to solve The technical problems of corrosion-resistant brass materials for fishing nets in the prior art are brittleness, poor processability, and high cost

Method used

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Effect test

Embodiment 1

[0029] Ingredients: Copper alloy material resistant to seawater corrosion and scouring. The composition and mass percentage of each composition contained in the composition formula are controlled at Cu 70%, Al 0.9%, Zr 0.004%, Si 3.1%, P 1.5%, Zn balance. Cu, Al, Sn, Si, and Zn used in smelting are pure metals, and P is added with Cu-15%P intermediate alloy. The structure obtained after smelting is α phase. The prepared brass alloy material has a strength of over 500 MPa, a hardness of HB 150, an elongation of over 40%, and a corrosion rate of 7 μm / a in seawater.

Embodiment 2

[0031] Ingredients: Copper alloy material resistant to seawater corrosion and scouring. The composition and mass percentage of each composition contained in the composition formula are controlled at Cu 70%, Al 0.2%, Zr 0.004%, Si 3.5%, P 1.5%, and the balance of Zn. Cu, Al, Sn, Si, and Zn used in smelting are pure metals, and P is added with Cu-15%P intermediate alloy. The structure obtained after smelting is α phase. The prepared brass alloy material has a strength of more than 450MPa, a hardness of HB 150, an elongation of more than 35%, and a corrosion rate of 8 μm / a in seawater.

Embodiment 3

[0033] Ingredients: Copper alloy material resistant to seawater corrosion and scouring. The composition and mass percentage of each composition contained in the composition formula are controlled at Cu 70%, Al 0.02%, Zr 0.006%, Si 1.91%, P 1.5%, Zn balance. Cu, Al, Sn, Si, and Zn used in smelting are pure metals, and P is added with Cu-15%P intermediate alloy. The structure obtained after smelting is α phase. The prepared brass alloy material has a strength of more than 450MPa, a hardness of HB 150, an elongation of more than 30%, and a corrosion rate of 8 μm / a in seawater.

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Abstract

The invention provides seawater-corrosion-resistant copper alloy containing zirconium. The seawater-corrosion-resistant copper alloy containing zirconium is prepared from, by mass percent, 63%-75% of Cu, 0.05%-1.5% of Al, 1.91%-3.5% of Si, 0.26%-2.0% of P, 0.0008%-0.006% of Zr and the balance Zn, and the copper alloy is in a single alpha phase. The invention further provides a preparation method of the copper alloy. By mass percent, the reaction substances are weighed, wherein Cu, Al, Zr, Si and Zn are elementary substances, and P is added in the manner of Cu-P intermediate alloy; and the above substances are added into a reaction vessel, smelting is performed for 2-5 hours at the temperature of 1000-1200 DEG C, and the seawater-corrosion-resistant copper alloy is obtained after cooling. The seawater-corrosion-resistant copper alloy is resistant to long-time corrosion of seawater, meanwhile, other performance of brass is not damaged, and the alloy has the beneficial effects of being high in strength, good in machining performance, high in hardness and resistant to seawater scouring.

Description

technical field [0001] The invention belongs to the field of nonferrous metals and relates to an alloy, in particular to a seawater corrosion-resistant copper alloy containing zirconium and a preparation method thereof. Background technique [0002] In recent years, fish farming has become a rapidly developing industry, but the materials used in traditional farming barbed wire and shellfish farming trays are plastic nets made of synthetic fibers. However, the use of this material is prone to fouling in the seawater farming process , A large amount of dirt will not only block the mesh of the sea culture tank, increase the difficulty and cost of cleaning, but also reduce the flow of sea water and affect the healthy growth of farmed fish. Due to the problems with synthetic fiber fishing net materials, there is now a trend to use copper alloy cages. The advantages of copper alloy mesh cages are as follows: 1. Prevent biological pollution, reduce costs, avoid fish stress and the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/04C22C1/03
CPCC22C1/03C22C9/04
Inventor 刘新宽刘平陈小红
Owner UNIV OF SHANGHAI FOR SCI & TECH
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