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A kind of preparation method of copper-nickel-tin alloy

A copper-nickel-tin and alloy technology, applied in the field of copper-nickel-tin alloy preparation, can solve problems such as the difficulty in realizing the industrial production of copper-nickel-tin alloy plates and strips, achieve good plasticity, shorten the process flow, and save energy

Inactive Publication Date: 2011-12-21
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, the domestic patent CN200410053071 adopts the spray precipitation molding method to produce Cu-15Ni-8Sn-3.5Y alloy. The copper-nickel-tin alloy prepared by this method has small segregation and good performance of the alloy. However, it is difficult to realize the copper-nickel-tin Industrial production of alloy plate and strip

Method used

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  • A kind of preparation method of copper-nickel-tin alloy
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Effect test

Embodiment 1

[0025] like figure 1 Shown, the copper-nickel-tin alloy preparation method of the present invention, concrete steps are:

[0026] 1. Melting ingot: use non-vacuum induction furnace for melting. The order of adding the alloy is: electrolytic copper, pure nickel, heating until the melt is completely melted, adding a covering agent (charcoal) and keeping it warm for 5-10 minutes, after degassing and impurity removal, and then covering with burning charcoal about 10mm thick. After heat preservation for 10 minutes, add dried Cu-P, Zn, Sn, fully stir, let stand for 5-10 minutes, and then cast out of the furnace. The casting temperature is 1200°C-1250°C.

[0027] 2. Solution treatment: the ingot is subjected to solution treatment in a heating furnace with protective gas, the solution temperature is 800°C, the holding time is 2-5h, and the cooling method is water cooling.

[0028] 3. Rough rolling: 80-85% rough rolling deformation of the solution-treated alloy.

[0029] 4. Interme...

Embodiment 2

[0036] 1. Melting ingot: use non-vacuum induction furnace for melting. The order of adding the alloy is: electrolytic copper, pure nickel, heating until the melt is completely melted, adding a covering agent (charcoal) and keeping it warm for 5-10 minutes, after degassing and impurity removal, and then covering with burning charcoal about 10mm thick. After heat preservation for 10 minutes, add dried Cu-P, Zn, Sn, fully stir, let stand for 5-10 minutes, and then cast out of the furnace. The casting temperature is 1200°C-1250°C.

[0037] 2. Solution treatment: the ingot is subjected to solution treatment in a heating furnace with protective gas, the solution temperature is 850°C, the holding time is 2-5h, and the cooling method is water cooling.

[0038] 3. Rough rolling: 80-85% rough rolling deformation of the solution-treated alloy.

[0039] 4. Intermediate annealing: Put the rough rolled alloy into the heat treatment annealing furnace for intermediate annealing, the anneali...

Embodiment 3

[0046] 1. Melting ingot: use non-vacuum induction furnace for melting. The order of adding the alloy is: electrolytic copper, pure nickel, heating until the melt is completely melted, adding a covering agent (charcoal) and keeping it warm for 5-10 minutes, after degassing and impurity removal, and then covering with burning charcoal about 10mm thick. After heat preservation for 10 minutes, add dried Cu-P, Zn, Sn, fully stir, let stand for 5-10 minutes, and then cast out of the furnace. The casting temperature is 1200°C-1250°C.

[0047] 2. Solution treatment: the ingot is subjected to solution treatment in a heating furnace with protective gas, the solution temperature is 900°C, the holding time is 2-5h, and the cooling method is water cooling.

[0048] 3. Rough rolling: 80-85% rough rolling deformation of the solution-treated alloy.

[0049] 4. Intermediate annealing: Put the rough rolled alloy into the heat treatment annealing furnace for intermediate annealing, the anneali...

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Abstract

The invention discloses a method for preparing a copper-nickel-tin alloy. The preparation method is composed of smelting and casting, solid solution, rough rolling, annealing, cold rolling, aging treatment, cold rolling and other processes. The preparation method of the copper-nickel-tin alloy of the present invention does not require homogenization treatment between smelting and rough rolling, and can directly dissolve the Sn-rich phase in the alloy into the copper matrix after a short-term solution heat treatment at high temperature, eliminating the The brittle phase NixSny produced in the casting process makes the alloy obtain good plastic workability, which is beneficial to subsequent processing. In addition, direct rough rolling after solution treatment saves the homogenization treatment and hot rolling process in the existing preparation method, thereby saving energy, shortening the process flow, improving production efficiency and reducing production cost.

Description

technical field [0001] The invention belongs to the technical field of copper alloy material processing, in particular to a method for preparing a copper-nickel-tin alloy. [0002] Background technique [0003] Copper-nickel-tin alloys are favored by people because of their high strength, elasticity, excellent electrical stability and thermal stress relaxation properties, and are considered to be the most promising new generation of high-strength, high-elasticity, high-performance copper alloy. However, due to the high content of Sn in the copper-nickel-tin alloy, there are severe dendrite segregation and reverse segregation of Sn during the melting and casting process, resulting in poor processing performance, uneven product performance, and poor surface quality. Long-term high-temperature annealing, that is, homogenization treatment (usually requires 25 to 30 hours of heat preservation), consumes a lot of energy, has a long process flow, low production efficiency, high p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/08
Inventor 柳瑞清蔡薇彭丽军杨胜利肖翔鹏柳羏
Owner JIANGXI UNIV OF SCI & TECH
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