Fine grain copper-tin alloy and preparing method thereof

A copper-tin alloy and fine-grain technology, which is applied in the field of copper alloy preparation, can solve the problems of less research on copper-tin alloy refining methods, and achieve the effects of reducing microscopic inhomogeneity, promoting crystal nucleus growth, and uniform nucleation.

Active Publication Date: 2018-03-13
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few studies on copper-tin alloy refinement methods in public reports at home and abroad.

Method used

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  • Fine grain copper-tin alloy and preparing method thereof
  • Fine grain copper-tin alloy and preparing method thereof
  • Fine grain copper-tin alloy and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A fine-grained copper-tin alloy comprising the steps of:

[0034] Step 1. Weigh the following components according to mass percentage: 10% tin powder, 0.1% titanium powder, and the balance is copper powder. The sum of the mass percentages of the above components is 100%.

[0035] Step 2, mix the components weighed in step 1, put the mixed powder into a Φ21 mold and form a green body with a height of Φ21x60mm, and put the green body into a high-purity graphite crucible for vacuum sintering. In order to prevent alloy oxidation, Feed H into the sintering furnace 2 , heated to 800°C and then kept for 30 minutes;

[0036] Step 3, in order to prevent excessive impurities from affecting the subsequent smelting process, the sintered body obtained in step 2 is subjected to surface treatment. The specific surface treatment process is: the copper-tin alloy sintered body is first pickled with 10% nitric acid alcohol and then cleaned with alcohol ;

[0037] Step 4, put the sinter...

Embodiment 2

[0039] A fine-grained copper-tin alloy comprising the steps of:

[0040] In step 1, the following components are weighed according to mass percentage: 13% tin powder, 0.3% titanium powder, and the balance is copper powder. The sum of the mass percentages of the above components is 100%.

[0041] Step 2, mix the components weighed in step 1, put the mixed powder into a Φ21 mold and form a green body with a height of Φ21x60mm, and put the green body into a high-purity graphite crucible for vacuum sintering. In order to prevent alloy oxidation, Feed H into the sintering furnace 2 , heated to 900°C and then kept for 10 minutes;

[0042] Step 3, in order to prevent excessive impurities from affecting the subsequent smelting process, the sintered body obtained in step 2 is subjected to surface treatment. The specific surface treatment process is: the copper-tin alloy sintered body is first pickled with 10% nitric acid alcohol and then cleaned with alcohol ;

[0043] Step 4, put t...

Embodiment 3

[0045] A fine-grained copper-tin alloy comprising the steps of:

[0046] Step 1. Weigh the following components according to mass percentage: 15% tin powder, 0.3% titanium powder, and the balance is copper powder. The sum of the mass percentages of the above components is 100%.

[0047] Step 2, mix the components weighed in step 1, put the mixed powder into a Φ21 mold and form a green body with a height of Φ21x60mm, and put the green body into a high-purity graphite crucible for vacuum sintering. In order to prevent alloy oxidation, Feed H into the sintering furnace 2 , heated to 950°C and then kept for 20 minutes;

[0048] Step 3, in order to prevent excessive impurities from affecting the subsequent smelting process, the sintered body obtained in step 2 is subjected to surface treatment. The specific surface treatment process is: the copper-tin alloy sintered body is first pickled with 10% nitric acid alcohol and then cleaned with alcohol ;

[0049] Step 4, put the sintered...

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Abstract

The invention discloses a fine grain copper-tin alloy. The alloy comprises following raw material components including, by mass percent, 10 to 16% of tin powder, 0.1 to 0.5% of titanium powder and thebalance copper powder. The sum of the mass percents if 100%, and the preparing method comprises following steps: firstly, according to the mass percent, the following components of 10 to 16% of tin powder, 0.1 to 0.5% of titanium powder and the balance copper powder are weighed; secondly, the components weighed in the first step are mixed, die pressing is carried out, sintering is carried out, and a sintering body is obtained through heat preservation; thirdly, the sintering body obtained in the second step is subject to surface treatment; fourthly, the sintering body treated in the third step is subject to induction smelting, the alloyed sintering body is heated to be in the molten state, heat preservation, stirring and rapid cooling are carried out, and the fine grain copper-tin alloy is obtained. Through the preparing method, the copper-tin alloy with the refine grains and uniform structure can be obtained.

Description

technical field [0001] The invention belongs to the technical field of copper alloy preparation, and in particular relates to a fine-grain copper-tin alloy, and also relates to a preparation method of the fine-grain copper-tin alloy. Background technique [0002] Tin bronze as a production of Nb 3 The main raw material of Sn low-temperature superconducting wire, its structure and composition are different from Nb 3 The performance of Sn low temperature superconducting wire has a great influence. If Nb is prepared by the bronze method 3 In the process of Sn low-temperature superconducting wire, the uneven distribution of Sn in copper alloy will lead to Nb 3 The uneven distribution of Sn superconducting phase affects its superconducting properties. Copper-tin alloys produced by traditional casting methods tend to have coarse grains and severe Sn segregation, commonly known as "tin sweating". At present, there are few studies on copper-tin alloy refinement methods in publi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/02C22C1/02
CPCC22C1/02C22C9/02
Inventor 邹军涛冯巧丽梁淑华肖鹏石浩
Owner XIAN UNIV OF TECH
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