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High-strength corrosion resisting brass material and preparation method thereof

A corrosion-resistant, brass technology, applied in the field of metal materials and metal smelting, can solve problems such as health injury and high toxicity, achieve increased strength and elongation, good comprehensive mechanical properties and corrosion resistance, and excellent comprehensive mechanical properties Effect

Inactive Publication Date: 2015-05-20
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, As is the most widely used element, but As is highly toxic, and its 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 resisting brass material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The composition weight ratio (wt%) of the material of the embodiment of the present invention is: 62% Cu, 0.02% La, 0.01% Sb, 0.05% Si, the rest is Zn and unavoidable impurities, and the annealing process is after 1.2 hours of heat preservation at 350°C air cooled.

[0017] Take the following steps to make:

[0018] (1) Put the copper block into the graphite crucible, heat and melt it with a medium-frequency induction furnace, add broken glass as a covering agent before the copper is about to melt, heat up to melt and overheat to 1150 ℃, add the preheated zinc block, and stir with a carbon rod Let the zinc melt completely and distribute evenly;

[0019] (2) Continue to raise the temperature of the alloy liquid to 1330°C, add massive pure lanthanum, antimony ingots, and silicon ingots at the same time, stir with a carbon rod, and let it stand for 10 minutes. The alloy liquid is poured out of the furnace at about 1200°C;

[0020] (3) After the poured sample is cooled, p...

Embodiment 2

[0022] The composition weight ratio (wt%) of the material of the embodiment of the present invention is: 62% Cu, 0.06% La, 0.02% Sb, 0.08% Si, the rest is Zn and unavoidable impurities, and the annealing process is after 1 hour of heat preservation at 400°C air cooled.

[0023] Take the following steps to make:

[0024] (1) Put the copper block into the graphite crucible, heat and melt it with a medium-frequency induction furnace, add broken glass as a covering agent before the copper is melted, heat up to melt and overheat to 1170°C, add the preheated zinc block, and stir with a carbon rod Let the zinc melt completely and distribute evenly;

[0025] (2) Continue to heat up the alloy liquid to 1370°C, add block lanthanum, antimony ingot, and silicon ingot at the same time, stir with a carbon rod, let it stand for 8 minutes, and the alloy liquid is poured out of the furnace at about 1200°C;

[0026] (3) After the poured sample is cooled, put it into an electric furnace at a t...

Embodiment 3

[0028] The composition weight ratio (wt%) of the material of the embodiment of the present invention is: 62% Cu, 0.1% La, 0.06% Sb, 0.1% Si, the rest is Zn and unavoidable impurities, and the annealing process is after 1.5 hours of heat preservation at 500°C air cooled.

[0029] Take the following steps to make:

[0030] (1) Put the copper block into the graphite crucible, heat and melt it with a medium-frequency induction furnace, add broken glass as a covering agent before the copper is about to melt, heat up to melt and overheat to 1180°C, add the preheated zinc block, and stir with a carbon rod Let the zinc melt completely;

[0031] (2) Continue to raise the temperature of the alloy liquid to 1380°C, add block lanthanum, antimony ingot, and silicon ingot at the same time, stir with a carbon rod, let it stand for 10 minutes, and the alloy liquid is poured out of the furnace at about 1200°C;

[0032] (3) After the poured sample is cooled, put it into an electric furnace at...

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Abstract

The invention relates to a high-strength corrosion resisting brass material and a preparation method thereof. The high-strength corrosion resisting brass material is prepared from the following components in percentage by weight: 55-74% of Cu, 0.02-0.12% of La, 0.01-0.1% of Sb, 0.05-0.15% of Si and the balance of zinc (Zn) and inevitable impurities of which the total amount is not greater than 0.5%. The annealing process comprises a step of keeping the temperature of a test sample for 1-2 hours at 350-550 DEG C and air-cooling subsequently. An ordinary brass material is treated by virtue of the composite function of lanthanum, antimony and silicon, and annealing treatment is further implemented, so that the micro texture of an alloy is remarkably changed, the texture can be purified, the beta phase is relatively fine and small and relatively uniformly distributed, the strength and the plasticity of the alloy material are improved, the alloy material is good in comprehensive mechanical property, the corrosion property of the alloy material is improved, the service life of the alloy material is prolonged, and the alloy material is applicable to manufacturing of sanitary tools, water heating devices, instrument and meter condensation tubes, valves and the like with corrosion resistance requirements.

Description

technical field [0001] The invention relates to a process method for improving the strength and corrosion resistance of common brass materials by using the composite action of lanthanum, antimony and silicon and annealing treatment, and belongs to the technical field of metal materials and metal smelting. 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, forming a loose porous structure, which seriously reduces the mechanical properties of brass, shortens the service life, and also brings safety hazards. In order to suppress the dezincification corrosion of brass over the years, researchers have taken var...

Claims

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Application Information

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IPC IPC(8): C22C9/04C22F1/08
CPCC22C9/04C22F1/08
Inventor 耿浩然罗宏盛萌赵天硕肖振刘晓英李明洋冷金凤
Owner UNIV OF JINAN
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