Preparation method of molten-copper-aluminum melt alloy bus

A technology of fusion alloy and busbar, which is applied in the field of preparation of copper-aluminum liquid fusion alloy busbar, can solve the problems such as inability to stably reflect the effect, and achieve the effects of good industrial application prospects, excellent electrical conductivity, excellent bonding and tensile properties

Active Publication Date: 2017-05-17
美嘉科技(镇江)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing copper and aluminum production methods, such as pouring method, horizontal continuous casting method, extrusion method, hydrostatic extrusion method, casing drawing method, cladding welding method and rolling crimping method, it is difficult to prepare copper and aluminum with relatively large section size. Hig

Method used

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  • Preparation method of molten-copper-aluminum melt alloy bus
  • Preparation method of molten-copper-aluminum melt alloy bus
  • Preparation method of molten-copper-aluminum melt alloy bus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Pretreatment: remove the oxide layer on the surface of the aluminum rod and the oxide on the inner wall of the copper tube, and preheat the copper tube at a temperature of 500 °C;

[0028] Preparation of master alloy: melt the aluminum rod at a high temperature of 750 ° C, and pass in N 2 Inert gas, add 12wt% of lanthanum-cerium alloy particles with a particle size of <100nm, set the parameter power to 1300W, frequency to 15kHz, temperature to 720°C, and high-energy ultrasonic treatment for 15 minutes;

[0029] Preparation of slurry: melt the aluminum rod at a high temperature of 750°C, add the above-mentioned master alloy, and cool it rapidly to prepare a semi-solid slurry, and keep it warm at 580°C for 15 minutes;

[0030] Extrusion billet: put the preheated copper tube into the cavity of the concave mold of the hydraulic press, and then quantitatively pour the semi-solid liquid rare earth aluminum slurry into the cavity of the concave mold, and the hydraulic press pe...

Embodiment 2

[0033] Pretreatment: remove the oxide layer on the surface of the aluminum rod and the oxide on the inner wall of the copper tube, and preheat the copper tube at a temperature of 550°C;

[0034] Preparation of master alloy: melt the aluminum rod at a high temperature of 720°C, and pass in N 2 Inert gas, add 12wt% lanthanum-cerium alloy particles with a particle size of <100nm, set the parameters to power 1500W, frequency 25kHz, temperature 660°C, high-energy ultrasonic treatment for 20min;

[0035] Preparation of slurry: melt the aluminum rod at a high temperature of 750°C, add the above-mentioned master alloy, and cool it rapidly to prepare a semi-solid slurry, and keep it warm at 550°C for 15 minutes;

[0036] Extrusion billet: put the preheated copper tube into the cavity of the concave mold of the hydraulic press, and then quantitatively pour the semi-solid liquid rare earth aluminum slurry into the cavity of the concave mold, and the hydraulic press performs rapid extrusi...

Embodiment 3

[0039] Pretreatment: remove the oxide layer on the surface of the aluminum rod and the oxide on the inner wall of the copper tube, and preheat the copper tube at a temperature of 600°C;

[0040] Master alloy preparation: Melt the aluminum rod at a high temperature of 740°C and pass it into SF 6 Inert gas, add 12wt% of lanthanum-cerium alloy particles with a particle size of <100nm, set the parameter power to 1600W, frequency to 20kHz, temperature to 700°C, and high-energy ultrasonic treatment for 25 minutes;

[0041] Preparation of slurry: melt the aluminum rod at a high temperature of 750°C, add the above-mentioned master alloy, and cool it rapidly to prepare a semi-solid slurry, and keep it warm at 600°C for 15 minutes;

[0042] Extrusion billet: put the preheated copper tube into the cavity of the concave mold of the hydraulic press, and then quantitatively pour the semi-solid liquid rare earth aluminum slurry into the cavity of the concave mold, and the hydraulic press per...

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Abstract

The invention provides a preparation method of a molten-copper-aluminum melt alloy bus. The preparation method includes: removing an oxide layer on the surface of an aluminum bar and oxide on the inner wall of a copper tube, and preheating the copper tube; melting the aluminum bar, feeding inert gas, adding rare-earth elements, and performing high-energy ultrasonic treatment; melting the aluminum bar, adding intermediate alloy, fast cooling, preparing semi-solid slurry, and performing heat preservation; placing the preheated copper tube into the female die cavity of a hydraulic machine, quantitatively pouring the semi-solid rare-earth molten-aluminum slurry into the female die cavity, using the hydraulic machine to perform fast extrusion forming through the female die cavity, and performing heat preservation; performing multi-pass continuous rolling, and cooling in the air. The preparation method has the advantages that the mechanical performance of the prepared molten-copper-aluminum melt alloy bus can stably shows excellent combining and tensile properties as compared with that of similar products on the market; the prepared molten-copper-aluminum melt alloy bus is excellent in conductivity, and the measured conductivity of the prepared molten-copper-aluminum melt alloy bus is stably higher than that of the similar products; the preparation method is energy-saving, environmentally friendly and promising in industrial application prospect.

Description

technical field [0001] The invention belongs to the field of electrical alloys, and in particular relates to a method for preparing a copper-aluminum liquid fusion alloy busbar. Background technique [0002] Bus bar refers to products made of high-conductivity copper and aluminum materials to transmit electric energy, and to collect and distribute electric power. The main wire used to transmit electric energy in a power plant or substation. Through it, the electric energy output by the generator, transformer or rectifier is transmitted to various users or other substations. [0003] Copper can provide a stronger conductive effect and is not easily corroded. It has been widely used in electrical and thermal conductor materials, but it is expensive, and my country is not a copper-rich country. Aluminum material has excellent mechanical properties and lower cost than copper, but its electrical conductivity is poor. [0004] As a new type of composite material, copper-aluminu...

Claims

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Application Information

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IPC IPC(8): H01B13/00H01B1/02B22D19/00
CPCB22D19/00H01B1/023H01B1/026H01B13/00H01B13/0013H01B13/0016
Inventor 刘绍民
Owner 美嘉科技(镇江)有限公司
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