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Anti-dezincification lead-free bismuth arsenic brass and preparation method thereof

A technology of zinc-lead-free bismuth-arsenic brass and copper liquid, which is applied in the field of dezincification-resistant lead-free bismuth-arsenic brass and its preparation, can solve the problems of weakening the anti-dezincification corrosion performance of duplex brass, and achieve the improvement of anti-dezincification Effects of zinc corrosion performance, corrosion sensitivity reduction, and ease of component control

Active Publication Date: 2018-01-23
龙岩市鸿航金属科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the lead content is reduced, the dezincification resistance of duplex brass will be weakened

Method used

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  • Anti-dezincification lead-free bismuth arsenic brass and preparation method thereof
  • Anti-dezincification lead-free bismuth arsenic brass and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A kind of anti-dezincification lead-free bismuth arsenic brass is characterized in that: be made up of the raw material of following mass percent:

[0026] Cu61%, Bi0.5%, As0.07%, Al0.5%, Sn0.08%, Pb0.06%, Zn37.75% and total 0.04% impurities. This particular formulation ingredient has the following advantages:

[0027] The preparation method of the above-mentioned anti-dezincification lead-free bismuth arsenic brass includes:

[0028] 1) First add 150kg of pure copper rice into the cored power frequency furnace. The total amount of pure copper rice in the power frequency furnace is 7.5% of the total raw materials. When it is in a semi-molten state, press it into the preheated 0.08% tin ingot, 0.5% bismuth ingot and 0.5% aluminum ingot accounted for the total raw material, fully stirred and allowed to stand for 10 minutes;

[0029] 2) Add the red copper plate required for the batching of the furnace. The red copper plate is standard cathode copper, and the amount added...

Embodiment 2

[0040] A dezincification-resistant lead-free bismuth-arsenic brass, consisting of the following raw materials in mass percent: Cu62%, Bi0.7%, As0.1%, Al0.7%, Sn0.15%, Pb0.09%, Zn36 .12% and total 0.14% impurities.

[0041] The preparation method of the above-mentioned anti-dezincification lead-free bismuth arsenic brass: comprises the following steps:

[0042] 1) First add 200kg of pure red copper rice into the cored power frequency furnace. The total amount of pure red copper rice in the power frequency furnace is 10% of the total raw materials. When it is in a semi-molten state, press it into the preheated 0.15% tin ingot, 0.7% bismuth ingot and 0.7% aluminum ingot accounted for the total raw material, fully stirred and allowed to stand for 10 minutes;

[0043] 2) Add the red copper plate required for the furnace ingredients. The red copper plate is standard cathode copper, and the amount added should ensure that the Cu content in the above-mentioned total raw materials rea...

Embodiment 3

[0050] A dezincification-resistant lead-free bismuth-arsenic brass, consisting of the following raw materials in mass percent: Cu63%, Bi0.9%, As0.12%, Al0.8%, Sn0.24%, Pb0.02%, Zn34 .84% and a total of 0.08% impurities.

[0051] The preparation method of the above-mentioned anti-dezincification lead-free bismuth arsenic brass: comprises the following steps:

[0052] 1) First add 300kg of pure copper rice into the cored power frequency furnace. The total amount of pure copper rice in the power frequency furnace is 15% of the total raw materials. When it is in a semi-molten state, press it into the preheated 0.24% tin ingot, 0.9% bismuth ingot and 0.8% aluminum ingot accounted for the total raw material, fully stirred and allowed to stand for 10 minutes;

[0053] 2) Add the red copper plate required for the batching of the furnace. The red copper plate is standard cathode copper, and the amount added should ensure that the Cu content in the above-mentioned total raw materials r...

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Abstract

The invention relates to the field of copper alloys of kitchen and toilet products and provides an anti-dezincification lead-free bismuth arsenic brass with excellent anti-dezincification corrosion property, high strength and excellent processing property and a preparation method thereof. The anti-dezincification lead-free bismuth arsenic brass is prepared according to the following steps: takingthe following raw materials by weight percent: 61-63% of Cu, 0.5-0.9% of Bi, 0.07-0.12% of As, 0.5-0.8% of Al, 0.08-0.24% of Sn, less than 0.1% of Pb, and the balance of Zn and impurities in total content of not above 0.25%, melting, sampling, detecting and casting into ingot.

Description

technical field [0001] The invention relates to the field of copper alloys used in the bathroom and kitchen industry, in particular to a dezincification-resistant lead-free bismuth-arsenic brass and a preparation method thereof. Background technique [0002] Lead brass (common grade is HPb59-1) has become the first choice copper alloy material for bathroom and kitchen hardware because of its good casting molding, cutting, grinding and polishing and mechanical properties, and is widely used. The Zn content of this type of brass exceeds 36%, and it is prone to dezincification corrosion during use, especially in marine climate conditions, which directly affects the life of bathroom and kitchen hardware products. Australia has formulated AS2345~2006 "Dezincification resistance of copper alloys", which stipulates that the dezincification layer of brass castings shall not exceed 100μm. However, practice has proved that for general leaded brass (whether processed copper or cast co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/04C22C1/03C22C1/06
Inventor 陈永禄彭秀华王秋燕廖春荣蔡文伟蔡新疆
Owner 龙岩市鸿航金属科技有限公司
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