Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Preparing method for ultrafine copper-aluminum alloy powder

A copper-aluminum alloy and powder technology, which is applied in the field of preparation of ultra-fine copper-aluminum composite powder, can solve the problems of high energy consumption, large powder particle size, and application limitations, and achieve uniform particle size distribution, large specific surface area, and good fluidity Effect

Inactive Publication Date: 2017-11-17
JINCHUAN GROUP LIMITED +1
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing conventional method of metal powder preparation is to mix two metal powders together and grind them by mechanical ball milling. This method is difficult to mix the two powders evenly and consumes a lot of energy.
Copper-coated aluminum powder is also a commonly used method, that is, copper-coated aluminum powder is coated by electroplating. The powder prepared by this method has a large particle size and cannot take advantage of the advantages of the two metals.
The third method is the fusion casting method, that is, the molten metal is atomized and cooled at high temperature, and the particle size of the metal powder is about 100 μm or more. The powder prepared by this method cannot be controlled to be smaller, and its application is greatly limited.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparing method for ultrafine copper-aluminum alloy powder
  • Preparing method for ultrafine copper-aluminum alloy powder
  • Preparing method for ultrafine copper-aluminum alloy powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Prepare the solution with deionized water, in which CuCl in the solution 2 0.31mol / L, AlCl 3 It is 2.96mol / L, stir evenly. Put the mixed solution through the feeding system 1, and use a constant flow pump to control the appropriate flow rate to inject the solution into the high-speed spray device; the atomized solution enters the spray drying furnace; the hot air system 2 controls the spray drying temperature to 180 ° C; collect the initially synthesized Mix the metal chloride powder in the silo 4; control the wind force of the induced draft fan 6, and the bag dust collector 5 captures small particle products. Put the products collected by the silo 4 and the bag dust collector 5 into the reduction furnace, and put hydrogen into the furnace at a temperature of 450° C., and roast for 10 hours. The products obtained after roasting are collected and sieved to obtain superfine copper-aluminum alloy powder.

Embodiment 2

[0021] Prepare the solution with deionized water, in which CuCl in the solution 2 0.39mol / L, AlCl 3 It is 2.78mol / L, stir evenly. Put the mixed solution through the feeding system 1, and use a constant flow pump to control the appropriate flow rate to inject the solution into the high-speed spray device; the atomized solution enters the spray drying furnace; the hot air system 2 controls the spray drying temperature to 200 ° C; collect the initially synthesized Mix the metal chloride powder in the silo 4; control the wind force of the induced draft fan 6, and the bag dust collector 5 captures small particle products. Put the products collected by the silo 4 and the bag filter 5 into the reduction furnace, and put hydrogen into the furnace at a temperature of 470° C., and roast for 8 hours. The products obtained after roasting are collected and sieved to obtain superfine copper-aluminum alloy powder.

Embodiment 3

[0023] Prepare the solution with deionized water, in which CuCl in the solution 2 0.47mol / L, AlCl 3 It is 2.59mol / L, stir evenly. The mixed solution is passed through the feed system 1, and the constant flow pump is used to control the appropriate flow rate to inject the solution into the high-speed spray device; the atomized solution enters the spray drying furnace; the hot air system 2 controls the spray drying temperature to 230 °C; collects the initially synthesized Mix the metal chloride powder in the silo 4; control the wind force of the induced draft fan 6, and the bag dust collector 5 captures small particle products. Put the products collected by the silo 4 and the bag filter 5 into the reduction furnace, and put hydrogen into the furnace at a temperature of 500° C., and roast for 6 hours. The products obtained after roasting are collected and sieved to obtain superfine copper-aluminum alloy powder.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a preparing method for ultrafine copper-aluminum alloy powder. The preparing method comprises the following steps that firstly, a metal solution in which the copper element and the aluminum element are mixed is subjected to high-speed atomization, rapid drying is conducted in the atmosphere with the temperature ranging from 180 DEG C to 230 DEG C through formed rotational flow, and ultrafine mixed metal chloride powder is generated; and secondly, after being collected, the product prepared in the first step is added in a reducing furnace, inflation of hydrogen is conducted for reducing and roasting, the product obtained after roasting is collected and screened, and the ultrafine copper-aluminum alloy powder is obtained. The preparing method has the beneficial effects that the product is similar single crystal particle alloy powder with the average grain size being 1 micron, and the alloy powder has the prominent beneficial effects of being good in fluidity, uniform in grain size distribution, high in compaction degree, large in specific surface area and the like.

Description

technical field [0001] This application relates to the field of preparation methods for raw materials for manufacturing copper-aluminum-based metallurgical components, and relates to the preparation of ultrafine copper-aluminum composite powders produced by spray drying and roasting reduction methods. Background technique [0002] Copper-aluminum alloy powder is the raw material for manufacturing copper-aluminum-based metallurgical components. It has a very wide range of market applications in aerospace applications, machinery manufacturing, 3D printer technology, automobile manufacturing, and electrical equipment. The most important use of ultra-fine copper-aluminum alloy powder is as a conductive filler for conductive composite materials. The width of its particle size distribution directly determines its conductive performance and stability. It is generally believed that the narrower the particle size distribution of the copper-aluminum alloy powder, the larger the specif...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B22F9/22C22C21/12
CPCB22F9/22C22C21/12
Inventor 常全忠崔永福王红忠郭幸郭燕平王国超谭晓红
Owner JINCHUAN GROUP LIMITED
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com