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Etch resistant aluminium brass alloy

An aluminum brass and alloy technology, applied in the field of metal material alloying and material anti-corrosion, can solve the problems of increased consumption, cost increase, frequent tube replacement, etc., and achieve improved corrosion resistance, good corrosion resistance, and ratio design reasonable effect

Active Publication Date: 2004-11-17
ZHEJIANG HAILIANG
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Problems solved by technology

When the existing HA177-2 alloy is used in heavily polluted water, its service life is only 3 to 5 years, and the frequent replacement of pipes not only reduces the efficiency of the unit, but also increases consumption, leading to an increase in cost
Therefore, the existing aluminum-brass corrosion-resistant alloys have been difficult to meet the requirements for the use of condenser tube alloy materials

Method used

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Embodiment Construction

[0009] The preparation of the corrosion-resistant aluminum brass alloy of the present invention adopts a power frequency cored induction furnace. In the copper-zinc alloy melt, zinc (Zn) ingots, aluminum (Al) ingots and Copper-arsenic (Cu-As), copper-titanium (Cu-Ti)), copper-nickel (Cu-Ni), copper-chromium (Cu-Cr), copper-boron (Cu-B) master alloys and other materials, A cylindrical corrosion-resistant aluminum-brass alloy ingot was prepared by vertical semi-continuous casting. The addition amount of each component is calculated by weight percentage: copper (Cu) 76.0-79.0%, aluminum (Al) 1.8-2.5%, arsenic (As) 0.02-0.06%, titanium (Ti) 0.05-0.1%, 0.05-0.2% of nickel (Ni), 0.02-0.10% of chromium (Cr), 0.05-0.10% of boron (B), and the rest is zinc (Zn).

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Abstract

An etch resistant aluminium brass alloy relates to the field of metallic material alloying and material corrosion prevention technology, which comprises the components of (by weight percentage) Cu 76.0-79.0%, Al 1.8-2.5%, As 0.02-0.06%, Ti 0.01-0.10%, Ni 0.05-1.0%, Cr 0.01-0.50%, B 0.001-0.10% and balancing Zn and impurity whose total amount is less than 0.05%.

Description

technical field [0001] The invention relates to a corrosion-resistant aluminum-brass alloy, which belongs to the technical field of metal material alloying and material corrosion prevention. Background technique [0002] The main grade of the existing aluminum-brass corrosion-resistant alloy is HAl77-2, and its components are calculated by weight percentage: Cu 76.0-79.0%, Al 1.8-2.5%, the rest is Zn and the total amount of impurities is not more than 0.05%. , although the aluminum-brass corrosion-resistant alloy has good resistance to dezincification corrosion and erosion corrosion resistance, but in the presence of NH 4 + , Cl - When used in harsh water conditions such as high salt and high salt, its corrosion resistance is poor, and it is easy to be corroded, causing pipe leakage, which affects the use of steam turbines, condensers and other equipment that use aluminum-brass corrosion-resistant alloy tubes for condensation heat exchange. life. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/04
Inventor 曹建国赵学龙冯海良冯亚丽游启华傅林忠庹威李纯玉杨继德刘琥
Owner ZHEJIANG HAILIANG
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