Copper powder composition and production method thereof

A composition and technology of copper powder, applied in the field of copper powder production, can solve the problem of not being able to meet the looseness and other problems, and achieve the effects of reducing consumption, uniform particle size and good forming performance

Active Publication Date: 2014-06-18
CHONGQING YOUYAN ZHONGYE NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The current electrolytic copper powder production process is difficult to produce bulk density of 3.5~4.6g/cm 3 Among the products, electrolytic copper

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0034] Example 1

[0035] The preparation method of the copper powder composition of the present invention comprises the following steps:

[0036] The preparation method of electrolytic copper powder, comprising the following steps:

[0037] 1. Copper powder electrolysis: the anode is a cast copper anode plate, and the number of copper anodes is 13; the cathode is a cold-rolled cathode plate, and the number of cathodes is 12; the electrolyte is CuSO4 solution, copper ion: 5g / L; sulfuric acid: 110g / L, chloride ion: 0.5mg / L; electrolytic current density: 1000A / m 2 ; Electrolyte temperature: 45℃.

[0038] Scraping powder: Use a powder scraper to brush twice up and down, and scrape the powder once every 40 minutes.

[0039] 2. Washing powder: Use a 3-ton capacity filter washing machine to wash powder until BaCl is used. 2 Until no white precipitate is detected, the moisture content is controlled at 18%.

[0040] 3. Drying and reduction: steel belt furnace is used, and the ...

Example Embodiment

[0056] Example 2

[0057] The preparation method of the copper powder composition of the present invention comprises the following steps:

[0058] The preparation method of electrolytic copper powder, comprising the following steps:

[0059]1. Copper powder electrolysis: the anode is a cast copper anode plate, and the number of copper anodes is 13; the cathode is a cold-rolled cathode plate, and the number of cathodes is 12; the electrolyte is CuSO4 solution, copper ion: 8g / L; sulfuric acid: 160 g / L, chloride ion: 0.8mg / L; electrolytic current density: 1500A / m 2 ; Electrolyte temperature: 60℃.

[0060] Scraping powder: Use a powder scraper to brush twice up and down, and scrape the powder once every 40 minutes.

[0061] 2. Washing powder: Use a 3-ton capacity filter washing machine to wash powder until BaCl is used. 2 Until no white precipitate is detected, the moisture content is controlled at 22%.

[0062] 3. Drying and reduction: steel belt furnace is used, and the c...

Example Embodiment

[0078] Example 3

[0079] The preparation method of the copper powder composition of the present invention comprises the following steps:

[0080] The preparation method of electrolytic copper powder, comprising the following steps:

[0081] 1. Copper powder electrolysis: the anode is a cast copper anode plate, and the number of copper anodes is 13; the cathode is a cold-rolled cathode plate, and the number of cathodes is 12; the electrolyte is CuSO4 solution, copper ion: 6g / L; sulfuric acid: 130g / L, chloride ion: 0.4mg / L; electrolytic current density: 1300A / m 2 ; Electrolyte temperature: 50℃.

[0082] Scraping powder: Use a powder scraper to brush twice up and down, and scrape the powder once every 40 minutes.

[0083] 2. Washing powder: use a filter washing machine, wash the powder until BaCl is used 2 Until no white precipitate is detected, the moisture content is controlled at 20%.

[0084] 3. Drying and reduction: steel belt furnace is used, and the condition is c...

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PUM

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Abstract

The invention provides copper powder composition, which is characterized in that the copper powder composition consists of electrolytic copper powder and water atomization copper powder at the mass ratio of 1:(1.2-1.6), and a preparation method for the copper powder composition is provided. The apparent density of the copper powder composition is 3.5-4.6g/cm<3>, and the copper powder composition can be used for manufacturing friction material. The copper powder composition has the advantages of big strength, even particle size, increased apparent density and good formability.

Description

technical field [0001] The invention relates to the field of copper powder production, in particular to a special copper powder composition for friction materials and a preparation method thereof. Background technique [0002] The copper powder is dried, reduced, and cooled by a steel belt furnace, and then passed through a vibrating machine, hoist, crusher, and powder sieved [0003] After the machine, reciprocating, the sieved powder can get -200 mesh, -300 mesh copper powder, and the sieved material can be used as a semi-finished product of oil bearing copper powder and coarse copper powder after being sieved by 160 mesh. [0004] The current electrolytic copper powder production process is difficult to produce bulk density of 3.5~4.6g / cm 3 Among the products, electrolytic copper powder + 160-mesh sieve has undergone secondary crushing and sieving, and the bulk density is still 2.9~3.1g / cm 3 , still can not meet the needs of compactness. Contents of the invention [...

Claims

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Application Information

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IPC IPC(8): B22F1/00B22F9/08C25C5/02
Inventor 蔡双洪程东张辛雷明刘海峰
Owner CHONGQING YOUYAN ZHONGYE NEW MATERIAL
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