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Production of iron composite powder with copper coating

A production method, copper-coated iron technology, applied in the direction of coating, etc., can solve the problems of parts quality impact, uneven mixing, etc., and achieve the effect of complete coating, simple preparation process and fast response

Inactive Publication Date: 2006-08-16
JINCHUAN GROUP LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the manufacture of powder metallurgy parts, a large amount of copper-based powder is used. In most cases, several powders are used in combination, that is, according to the demand, they are quantified in advance, mixed evenly, and then sintered and pressed. In this way, it is inevitable when mixing powders. There is a small part or local uneven mixing, so that the quality of the part is affected

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0011] Prepare 3 liters of copper sulfate solution containing 10g / l of copper. If copper-clad iron powder with a copper content of 20% is to be prepared, about 160g of atomized iron powder needs to be added through calculation. Heat the copper sulfate solution to 30°C, and quickly add 160g of iron powder into the solution while stirring. After 4 minutes of reaction, the solution is colorless, stop stirring, filter and wash the powder, and after anti-oxidation treatment, vacuum dry at low temperature. It is copper-clad iron powder, and its copper content is 18.24%. Iron powder loose packing specific gravity 2.03g / cm 3 , the amount of copper-coated powder produced is 195.49g, the particle size is 100 mesh, and the loose specific gravity is 2.21g / cm 3 .

example 2

[0013] Prepare 3 liters of copper sulfate solution containing 15g / l of copper. If copper-clad iron powder with a copper content of 30% is to be prepared, about 110g of atomized iron powder needs to be added through calculation. Heat the copper sulfate solution to 40°C, and quickly add 110g of iron powder into the solution while stirring. After reacting for 5 minutes, the solution is colorless, stop stirring, filter and wash the powder, and after anti-oxidation treatment, vacuum dry at low temperature. It is copper-clad iron powder, and its copper content is 28.10%. Iron powder is 100 mesh, loose specific gravity 2.03g / cm 3 , the amount of copper-coated powder produced is 151.83g, the particle size is 100 mesh, and the loose specific gravity is 2.16g / cm 3 .

example 3

[0015] Prepare 3 liters of copper sulfate solution containing 20g / l of copper. If copper-clad iron powder with a copper content of 30% is to be prepared, about 110g of atomized iron powder needs to be added through calculation. Heat the copper sulfate solution to 50°C, and quickly add 110g of iron powder into the solution while stirring. After reacting for 5 minutes, the solution is colorless, stop stirring, filter and wash the powder, and after anti-oxidation treatment, vacuum dry at low temperature. It is copper-clad iron powder, and its copper content is 28.10%. Iron powder is 100 mesh, loose specific gravity 2.03g / cm 3 , the amount of copper-coated powder produced is 151.83g, the particle size is 100 mesh, and the loose specific gravity is 2.16g / cm 3 .

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PUM

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Abstract

A composite Fe-in-Cu particle is prepared through stirring Fe powder while adding solution of copper sulfate, reacting at 30-50 deg.C, filtering, washing and vacuum drying.

Description

technical field [0001] The invention relates to a production method of copper-coated iron composite powder, which relates to a method of producing metal powder by adopting a hydrometallurgical method, especially a method of coating copper on the surface of iron, which is used for the production of metal powder for metallurgy. Background technique [0002] In powder metallurgy products, the amount of copper-based powder is increasing. In the preparation of parts, copper powder and iron powder are often used in combination. If each component is a single powder, it must be mixed uniformly before use, otherwise the quality of the parts will be affected. In the manufacture of powder metallurgy parts, a large amount of copper-based powder is used. In most cases, several powders are mixed and used, that is, according to the demand, they are quantified in advance and mixed evenly, and then sintered and pressed. In this way, it is inevitable when mixing powders. There is a small par...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/02
Inventor 陈自江汪锦瑞段建军米瑛陈泞来
Owner JINCHUAN GROUP LIMITED