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Environmentally-friendly copper material

An environmentally friendly and elemental technology, applied in the field of copper materials, can solve problems such as high lead content, achieve the effects of reducing damage, facilitating processing, and stabilizing chemical properties

Inactive Publication Date: 2011-09-14
JIANGSU MEILIN COPPER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing pipe fittings use copper-zinc alloy materials with relatively high lead content

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] To make 200kg of lead-free environmentally friendly copper material, the weight percentage of the material is: Zn: 38%, Al: 0.1%, Sn: 0.1%, Bi: 0.6%, Sb: 0.05%, Fe: 0.5%, Si: 0.25 %, Pb: 0.08%, and the balance Cu is 60.32%.

[0010] Zn, Al, Sn, Bi, Sb, Fe, Si, Pb and Cu in the batching are all pure metals, which are melted and cast into billets after batching. During annealing, the annealing temperature is controlled between 300-500°C.

Embodiment 2

[0012] To make 100kg of lead-free environmentally friendly copper material, the weight percentage of the material is: Zn: 32%, Al: 0.6%, Sn: 1.2%, Bi: 1.2%, Sb: 0.05%, Fe: 0.5%, Si: 0.25 %, Pb: 0.08%, and the balance Cu is 64.12%.

[0013] Zn, Al, Sn, Bi, Sb, Fe, Si, Pb and Cu in the batching are all pure metals, which are melted and cast into billets after batching. During annealing, the annealing temperature is controlled between 300-500°C.

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Abstract

The invention provides an environmentally-friendly copper material, belonging to the technical field of new materials. In the invention, element materials Zn, Al, Sn, Bi, Sb, Fe, Si, Pb and Cu are cast into a blank firstly, and then the blank is annealed to finally obtain the environmentally-friendly copper material. The weight percents of the element materials are as follows: 32-38% of Zn, 0.1-0.6% of Al, 0.1-1.2% of Sn, 0.6-1.2% of Bi, not more than 0.05% of Sb, not more than 0.5% of Fe, not more than0.25% of Si, less than 0.1% of Pb and the balance of Cu; and the annealing temperature is 300-500 DEG C. By the invention, the problem of lead content of the traditional copper material used in water and heating fittings is solved; at room temperature, Bi (bismuth) which is a substitute for lead does not react with oxygen or water and has stable chemical properties. By using the environmentally-friendly copper material, damage of lead dissolved out from a copper alloy material used in water and heating fittings to a human body can be reduced; meanwhile, the environmentally-friendly copper material has excellent cutting property, and products made of the environmentally-friendly copper material do not crack easily and are easy for processing.

Description

technical field [0001] The invention relates to a copper material, in particular to a copper material for water heating fittings and the like, and belongs to the technical field of new materials. Background technique [0002] For a long time, most of the plumbing fittings have used copper as the main material. Lead-free copper materials are easy to crack and difficult to process, and lead-containing copper alloys are conducive to processing and improving metal properties. However, copper alloy plumbing fittings containing lead, the lead content in which is harmful to human health, can damage the nervous system and brain development, and is especially dangerous for pregnant women, infants and children. Existing pipe fittings use copper-zinc alloy materials with relatively high lead content. With the progress of society, the issue of lead-containing copper materials used in plumbing fittings has attracted more and more attention. Especially in developed countries, the requir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/04C22F1/08
Inventor 翟金勇
Owner JIANGSU MEILIN COPPER
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