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Low-leaded sterilizing copper alloy and preparation method thereof

A technology of copper alloy and copper liquid, which is applied in the field of low-lead sterilizing copper alloy and its preparation, can solve the problems of poor mildew resistance, lead element damage to health, high lead content of copper alloy, etc., and achieve good mildew resistance and excellent sterilization Function, effect of lead content reduction

Inactive Publication Date: 2018-04-20
浙江新颖铜业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the technical problems of high lead content in current copper alloys, easy precipitation of lead elements, damage to health, and poor mildew resistance

Method used

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Embodiment Construction

[0013] Low-lead bactericidal copper alloy of the present invention comprises following components:

[0014] By weight percentage, Cu: 58%-62%; Sn: <0.2%; Si: 0.2%-0.6%; Al: 0.05%-0.4%; Pb: <0.2%; Fe<0.2%; Bi:0.2%- 0.7%; Ni<0.2%; S<0.08%; Zn: balance.

[0015] The preparation method of low-lead bactericidal copper alloy of the present invention, comprises the steps:

[0016] (1) By weight percentage, 58-62% Cu, less than 0.2% Sn, 0.2-0.6% Si, 0.05-0.4% Al, less than 0.2% Pb, less than 0.2% Fe, 0.2%-0.7% of Bi, less than 0.2% of Ni, less than 0.08% of S and the balance of Zn are mixed and preheated to 400-500°C;

[0017] (2) Melt the preheated mixed components at 1200-1300°C to form molten copper;

[0018] (3) After preheating the mold to 300°C, place the sand core in the mold;

[0019] (4) Casting the dissolved copper liquid into the mold to form a low-lead sterilized copper alloy casting, wherein the casting temperature is 1000-1100°C;

[0020] (5) The resulting casting i...

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Abstract

The invention discloses a low-leaded sterilizing copper alloy. The low-leaded sterilizing copper alloy comprises the following components, by weight, of 58%-62% of Cu, lower than 0.2% of Sn, 0.2%-0.6%of Si, 0.05%-0.4% of Al, lower than 0.2% of Pb, lower than 0.2% of Fe, 0.2%-0.7% of Bi, lower than 0.2% of Ni, lower than 0.08% of S and the balance Zn. The invention further discloses a preparationmethod of the low-leaded sterilizing copper alloy. The preparation method comprises the following steps that (1) by weight, the components of 58%-62% of Cu, lower than 0.2% of Sn, 0.2%-0.6% of Si, 0.05%-0.4% of Al, lower than 0.2% of Pb, lower than 0.2% of Fe, 0.2%-0.7% of Bi, lower than 0.2% of Ni, lower than 0.08% of S and the balance Zn are mixed and then preheated to the temperature of 400-500DEG C; (2) the preheated mixed components are melted at the temperature of 1200-1300 DEG C so as to form melted copper; (3) after a mould is preheated to 300 DEG C, a sand core is placed in the mould; (4) the melted copper is cast into the mould to form a low-leaded sterilizing copper alloy casting, wherein the casting temperature is 1000-1100 DEG C; and (5) the obtained casting is demoulded.

Description

technical field [0001] The invention relates to a low-lead bactericidal copper alloy and a preparation method thereof. Background technique [0002] Copper alloys are sterilizing, but the current copper alloys contain a high amount of lead, accounting for 1%-3% by weight. When used in drinking water supply system piping devices, lead elements are easily precipitated, seriously affecting human health. In addition, mildew resistance is poor. Contents of the invention [0003] The purpose of the invention is to solve the technical problems of high lead content in current copper alloys, easy precipitation of lead elements, damage to health, and poor mildew resistance. [0004] In order to solve the above technical problems, on the one hand, the present invention provides a low-lead bactericidal copper alloy, comprising the following components: [0005] By weight percentage, by weight percentage, Cu: 58%-62%; Sn: <0.2%; Si: 0.2%-0.6%; Al: 0.05%-0.4%; Pb: <0.2%; Fe<0...

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 徐招康
Owner 浙江新颖铜业有限公司
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