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Directional solidification preparation method of high-tin-content and high-plasticity copper-tin alloy

A technology of copper-tin alloy and directional solidification, which is applied in the field of preparing copper alloy materials by directional solidification, can solve the problems of low tin solid solubility and poor plasticity and toughness of materials, and achieve poor density, high plasticity and toughness, and good comprehensive performance Effect

Pending Publication Date: 2022-04-26
XIAN UNIV OF TECH
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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 provide a method for preparing copper-tin alloy with high tin content and high plasticity by directional solidification method, so as to solve the problem of low tin solid solubility caused by solute segregation in the existing copper-tin alloy preparation process and poor plasticity and toughness of materials caused by high content of intermetallic compounds, etc. problem, improve the alloy structure at the same time, obtain fine directional grains, and simultaneously realize the directional solidification preparation of high solid solubility and high plasticity copper-tin alloy

Method used

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  • Directional solidification preparation method of high-tin-content and high-plasticity copper-tin alloy
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  • Directional solidification preparation method of high-tin-content and high-plasticity copper-tin alloy

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Experimental program
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Effect test

Embodiment 1

[0031] Preliminary preparation of raw materials: Weigh 84.2% of Cu blocks, 15.5% of Sn particles, and 0.3% of Ti particles, and cut the Cu blocks into square blocks with a size of 40×40×40mm by wire cutting. Surface treatment of the treated material, use 400# sandpaper to clean the oxide scale on the surface of the copper block, then put the surface-treated copper block into a beaker, add an appropriate amount of ethanol solution or ultrasonic cleaning solution to the beaker, and then put it in the beaker. Clean in an ultrasonic cleaner for 15-20min, take out, rinse and dry;

[0032] Put the prepared materials into the magnesia crucible according to the density difference of each component of copper, tin and titanium in turn, put the magnesia crucible into the directional solidification furnace, adjust the pouring position and height of the cylindrical graphite crucible, and use cotton yarn containing alcohol. Wipe the contact between the furnace door and the furnace body, ens...

Embodiment 2

[0036] Preliminary preparation of raw materials: Weigh 84.5% of Cu blocks, 15.2% of Sn particles, and 0.3% of Ti particles, and cut the Cu blocks into square blocks with a size of 40×40×40mm by wire cutting. Surface treatment of the treated material, use 400# sandpaper to clean the oxide scale on the surface of the copper block, then put the surface-treated copper block into a beaker, add an appropriate amount of ethanol solution or ultrasonic cleaning solution to the beaker, and then put it in the beaker. Clean in an ultrasonic cleaner for 15-20min, take out, rinse and dry;

[0037] Put the prepared materials into the magnesia crucible according to the density difference of each component of copper, tin and titanium in turn, put the magnesia crucible into the directional solidification furnace, adjust the pouring position and height of the cylindrical graphite crucible, and use cotton yarn containing alcohol. Wipe the contact between the furnace door and the furnace body, ens...

Embodiment 3

[0041] Preliminary preparation of raw materials: Weigh 84.7% of Cu blocks, 15.0% of Sn particles, and 0.3% of Ti particles, and cut the Cu blocks into square blocks with a size of 40×40×40mm by wire cutting. Surface treatment of the treated material, use 400# sandpaper to clean the oxide scale on the surface of the copper block, then put the surface-treated copper block into a beaker, add an appropriate amount of ethanol solution or ultrasonic cleaning solution to the beaker, and then put it in the beaker. Clean in an ultrasonic cleaner for 15-20min, take out, rinse and dry;

[0042] Put the prepared materials into the magnesia crucible according to the density difference of each component of copper, tin and titanium in turn, put the magnesia crucible into the directional solidification furnace, adjust the pouring position and height of the cylindrical graphite crucible, and use cotton yarn containing alcohol. Wipe the contact between the furnace door and the furnace body, ens...

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Abstract

The invention discloses a directional solidification preparation method of a high-tin-content and high-plasticity copper-tin alloy, which comprises the following steps of: 1, weighing a Cu block, Sn and Ti, and pretreating; 2, materials obtained in the step 1 are sequentially put into a magnesia crucible, Ti is put into a feeding hopper for standby application, and a furnace door of a directional solidification furnace is closed; 3, the furnace is vacuumized, then induction melting heating is adopted, molten copper-tin alloy is obtained, a trace titanium element is added into a melt, and heat preservation is conducted to achieve melt homogenization; 4, the molten metal is poured into a constant-temperature cylindrical graphite crucible below for drawing, and a directionally solidified copper-tin alloy cast ingot is obtained after drawing is finished; the problems of low tin solid solubility caused by solute segregation in the existing copper-tin alloy preparation process and poor material plasticity and toughness caused by high intermetallic compound content are solved, meanwhile, the alloy structure is improved, and fine orientation lt is obtained; 001gt, 001gt; and the growing crystal grains synchronously realize directional solidification preparation of the high-solid-solubility and high-plasticity copper-tin alloy.

Description

technical field [0001] The invention belongs to the technical field of preparing copper alloy materials by a directional solidification method, and in particular relates to a directional solidification method for preparing copper-tin alloys with high tin content and high plasticity. Background technique [0002] At present, the demand for superconducting materials in medical, large-scale scientific devices and other fields is increasing day by day. Existing commercial superconducting wires include Nb 3 Sn, Nb 3 Al and other wires, while the existing research results show that the bronze method Nb 3 Sn superconducting wire has a higher critical current density, and at the same time, the processing and preparation technology has certain advantages, so the bronze method Nb 3 Sn superconducting wire will become the main direction of future superconducting wire development. While the current bronze method Nb 3 The base material copper-tin alloy used in the preparation proces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D25/06B22D27/04C22C1/02C22C9/02
CPCB22D25/06B22D27/045C22C9/02C22C1/02
Inventor 邹军涛张志伟宋大拙王宇轩孙利星
Owner XIAN UNIV OF TECH
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