Nd reinforced brass alloy and preparation technology thereof

A brass and alloy liquid technology is applied in the field of metal smelting and material anti-corrosion, which can solve the problems of arsenic being highly toxic and human health damage, and achieve the effect of good corrosion resistance and comprehensive mechanical properties.

Inactive Publication Date: 2016-08-03
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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  • Nd reinforced brass alloy and preparation technology thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] The composition weight ratio (wt.%) of the material of the present invention is 62% Cu, 0.06% neodymium (Nd), and the rest is Zn and unavoidable impurities.

[0027] Prepared using the following steps:

[0028] (1) Put the electrolytic copper block (plate) into the graphite clay crucible and heat it to melt with an intermediate frequency induction furnace. Just before the copper is melted, add broken glass as a covering agent to prevent the oxidation of metal copper, heat up and melt to 1150℃, add the preheated zinc ingot, stir with a carbon rod to completely melt the zinc;

[0029] (2) The alloy continues to heat up to 1350°C, add the block neodymium wrapped in copper foil, stir with a carbon rod, and let it stand for 5-10 minutes, reduce the temperature, and the alloy liquid will be cast at about 1200°C. See the alloy properties figure 1 .

Embodiment 2

[0031] The composition weight ratio (wt.%) of the material of the present invention is 62% Cu, 1.0% neodymium (Nd), and the rest is Zn and inevitable impurities.

[0032] Melting and casting were performed according to the same preparation process steps and parameters as in Example 1 with the composition ratio. After the above process, the brass material is made. See the alloy properties figure 1 .

Embodiment 3

[0034] The composition weight ratio (wt.%) of the material of the present invention is 62% Cu, 2.0% neodymium (Nd), and the rest is Zn and unavoidable impurities.

[0035] According to the composition ratio and the same preparation process steps and parameters as in Example 1, smelting and casting were performed. After the above process, the brass material is made. See the alloy properties figure 1 .

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Abstract

The invention relates to a high-strength corrosion-resistant brass material and a preparation method thereof. The weight percent composition of the alloy material: copper (Cu) 55%~72%, neodymium (Nd) addition 0.06%~2.0%, the rest is zinc (Zn) and unavoidable impurities whose total amount is not more than 0.5% . The invention uses neodymium to treat ordinary brass materials, so that the microstructure of the alloy changes significantly, the structure is purified, and the strength, hardness and corrosion resistance of the alloy material are improved, so that it has good comprehensive performance and is suitable for manufacturing corrosion-resistant Sanitary ware, plumbing equipment, instrumentation condensation pipes and valves with strict requirements.

Description

Technical field [0001] The invention relates to a process method for improving the corrosion resistance of ordinary brass materials by adopting rare earth element neodymium treatment, and belongs to the technical field of metal smelting and material corrosion prevention. 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 hydraulic valves. However, there is a problem of dezincification corrosion in brass during use, that is, the zinc element is preferentially corroded and falls off, leaving a loose porous structure, which severely reduces the mechanical properties of brass, shortens its service life, and brings safety hazards. . Over the years, in order to suppress the dezincification corrosion of brass, researchers have taken a variety of measures, among which the addition of alloying el...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/04C22C1/02
CPCC22C9/04C22C1/02
Inventor 武祥为耿浩然付开新
Owner UNIV OF JINAN
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