High-strength corrosion-resistant brass material and preparation and application thereof

A high-corrosion-resistant, high-strength technology, applied in the field of anti-corrosion materials, can solve the problems of arsenic poisoning, human health damage, etc., and achieve the effect of good corrosion resistance and comprehensive mechanical properties

Inactive Publication Date: 2017-02-15
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, arsenic is highly toxic, and volatilization during production and use will cause harm to human health, so it should be avoided as much as possible in the future

Method used

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  • High-strength corrosion-resistant brass material and preparation and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The composition weight ratio (wt.%) of the implementation material of the present invention is: 62% Cu, the treatment amount of samarium (Sm) is 0.03%, and the rest is Zn and unavoidable impurities.

[0025] Prepared by following steps:

[0026] (1) Put the electrolytic copper block (plate) into the graphite clay crucible, heat and melt it with an intermediate frequency induction furnace; add broken glass as a covering agent before the copper is melted to prevent the oxidation of metallic copper, and heat up to 1100~1200 °C, Add preheated zinc ingots and stir with a carbon rod to completely melt the zinc;

[0027] (2) The alloy continues to heat up to 1300~1400°C, add samarium wrapped in copper foil, stir with a carbon rod, let it stand for 5~10 minutes, lower the temperature, and the alloy liquid is cast at about 1200°C. The properties of the obtained alloy are shown in figure 1 .

Embodiment 2

[0029] The composition weight ratio (wt.%) of the implementation material of the present invention is: 62% Cu, the treatment amount of samarium (Sm) is 0.5%, and the rest is Zn and unavoidable impurities.

[0030] Melting and casting were carried out according to the same preparation process steps and parameters as in Example 1, and the brass material was made through the above process. The properties of the obtained alloy are shown in figure 1 .

Embodiment 3

[0032] The composition weight ratio (wt.%) of the implementation material of the present invention is: 62% Cu, the treatment amount of samarium (Sm) is 2.0%, and the rest is Zn and unavoidable impurities.

[0033] Melting and casting were carried out according to the same preparation process steps and parameters as in Example 1, and the brass material was made through the above process. The properties of the obtained alloy are shown in figure 1 .

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Abstract

The invention relates to a high-strength corrosion-resistant brass material and a preparation method thereof. The alloy material comprises, by weight, 50%-72% of copper (Cu), 0.03%-2.0% of samarium (Sm) and the balance zinc (Zn) and no more than 0.5% of impurities. According to the high-strength corrosion-resistant brass material and the preparation method thereof, the samarium is adopted for treating the ordinary brass material, the alloy microstructure of the brass material is changed obviously, the composition is purified, the strength, hardness and the corrosion resistance of the alloy material are improved, good comprehensive performance is achieved, and the high-strength corrosion-resistant brass material and the preparation method thereof are suitable for manufacturing condenser pipes and valves of sanitary ware, water heating equipment, instruments and meters with a requirement for corrosion resistance.

Description

technical field [0001] The invention relates to a process method for improving the corrosion resistance of common brass materials by treating with samarium, a rare earth element, and belongs to the fields of material anticorrosion technology and metal smelting technology. Background technique [0002] Brass has excellent mechanical properties, corrosion resistance, electrical and thermal conductivity, and processing technology, so it is widely used to manufacture sanitary ware, plumbing equipment, instruments and meters, and hydraulic valves. However, during the use of brass, there is a problem of dezincification corrosion, that is, the zinc element is preferentially corroded and falls off, leaving a loose porous structure, which seriously reduces the mechanical properties of brass, shortens its service life, and also brings safety hazards. In order to suppress the dezincification corrosion of brass over the years, researchers have taken various measures, among which adding ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/04
CPCC22C9/04
Inventor 武祥为耿浩然付开新
Owner UNIV OF JINAN
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