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White copper alloy and preparation technique thereof

A preparation process and alloy technology, applied in the field of cupronickel alloy and its preparation process, can solve problems such as human health problems, and achieve the effects of beautiful appearance, good elasticity, high strength and corrosion resistance

Inactive Publication Date: 2016-07-27
NANJING CHENGUANG ART ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because if it is used as a handicraft, it will be often touched by people, and if it contains lead, it will cause certain health problems to the human body.

Method used

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  • White copper alloy and preparation technique thereof

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Effect test

Embodiment 1

[0038] Embodiment 1: The white copper alloy described in the present invention contains by weight percentage: Ni15%, Zn5%, Sn2%, and the rest is copper.

[0039] Wherein the preparation technology of cupronickel alloy comprises the following steps:

[0040] Step 1: first add 1% manganese dioxide as an oxidant, then add 15% Ni and 78% Cu to form a mixture A; by adding manganese dioxide as an oxidant, the effect of oxidative smelting is achieved, because the use of manganese dioxide can be more Good solution to the problem of pores, so that the number of pores in the final handicraft is minimized, which can be better suitable for the application of handicrafts.

[0041] Step 2: Heat the mixture A in step 1 to 1300°C for 2 hours to melt, and form a mixed solution B; use high-temperature refining to make the alloy fully smelted, impurities float up, and after standing to cool down, use tools to remove oxidation on the surface Impurities make the cupronickel alloy made with fewer ...

Embodiment 2

[0044] Embodiment 2: The white copper alloy according to the present invention contains the following percentages by weight: 20% Ni, 10% Zn, 5% Sn, and the rest is copper.

[0045] Wherein the preparation technology of cupronickel alloy comprises the following steps:

[0046] Step 1: first add 1% manganese dioxide as an oxidant, then add 20% Ni and 65% Cu to form a mixture A; by adding manganese dioxide as an oxidant, the effect of oxidation smelting is achieved, because the use of manganese dioxide can be more Good solution to the problem of pores, so that the number of pores in the final handicraft is minimized, which can be better suitable for the application of handicrafts.

[0047] Step 2: Heat the mixture A in step 1 to 1330°C for 4 hours to melt, and form a mixed solution B; use high-temperature refining to make the alloy fully smelted, impurities float up, and after standing to cool down, use tools to remove oxidation on the surface Impurities make the cupronickel all...

Embodiment 3

[0050] Embodiment 3: The white copper alloy according to the present invention contains the following percentages by weight: 17% Ni, 7% Zn, 3.5% Sn, and the rest is copper.

[0051] Wherein the preparation technology of cupronickel alloy comprises the following steps:

[0052] Step 1: first add 1% manganese dioxide as an oxidant, then add 17% Ni and 72.5% Cu to form a mixture A; by adding manganese dioxide as an oxidant, the effect of oxidation smelting is achieved, because the use of manganese dioxide can be more Good solution to the problem of pores, so that the number of pores in the final handicraft is minimized, which can be better suitable for the application of handicrafts.

[0053] Step 2: Heat the mixture A in step 1 to 1300°C for 3 hours to melt, and form a mixed solution B; use high-temperature refining to make the alloy fully smelted, impurities float up, and after standing to cool down, use tools to remove oxidation on the surface Impurities make the cupronickel ...

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PUM

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Abstract

The invention discloses white copper alloy. The white copper alloy comprises, by weight, 15%-20% of Ni, 5%-10% of Zn, 2%-5% OF Sn, and the balance copper. A preparation method of the white copper alloy includes the steps that 1% of manganese dioxide is added as an oxidizing agent firstly, and then the 15%-20% of Ni and 65%-78% of Cu are added, so that a mixture A is formed; the mixture A is heated for 2-4 hours till the temperature rises to 1300-1330 DEG C for melting, so that a mixed solution B is formed; the 5%-10% of Zn and 2%-5% of Sn are added to the mixed solution B, and the mixture is heated for 20-70 minutes till the temperature rises to 1330-1360 DEG C, so that a mixed solution C is formed; a deoxidizing agent is added to the mixed solution C for deoxygenation, so that a mixed solution D is formed, wherein phosphor copper alloy serves as the deoxidizing agent; and the mixed solution D is cooled at the rate of 10-20 DEG C per minute, oxide impurities on the surface are removed with a tool after cooling is completed, and finally the molten white copper alloy is formed. The white copper alloy can meet the requirement for crafts and has no harm to people, the manufacturing technique is simpler, and less cost is required.

Description

technical field [0001] The invention belongs to the field of nonferrous metal processing, and in particular relates to a cupronickel alloy and a preparation process thereof. Background technique [0002] Cupronickel alloy is a copper alloy with nickel as the main additive element. Its color is beautiful and mild silver white, and it has good ductility and corrosion resistance. Generally, elements such as iron and lead are generally added to the white copper alloy composition in the prior art in order to enhance corrosion resistance and formability. [0003] Cupronickel is mostly used for corrosion-resistant industrial parts, and it is rarely suitable for cupronickel alloys and molding processes for artistic casting. Due to the contact between art castings and people, the alloying elements need to be safe and environmentally friendly, and require simple components and no heavy metal alloying elements such as lead. Existing cupronickel contains various metal materials such a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/06C22C1/02C22C1/06
CPCC22C9/06C22C1/02C22C1/06
Inventor 吴芳孙彪姜春梅
Owner NANJING CHENGUANG ART ENG CO LTD
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