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Method for preparing copper-based powder with low oxygen content and low apparent density through atomization

A technology of copper-based powder and atomization method, which is applied in the field of nozzle and nozzle hydraulic pressure, can solve the problems of low oxygen content, high oxygen content, low porosity ratio, etc., to improve sintering performance, reduce porosity ratio and content Oxygen content, effect of improving sintering stability

Inactive Publication Date: 2011-02-16
铜陵铜基粉体科技有限公司
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  • Abstract
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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of high loose ratio and high oxygen content of copper powder produced by the existing atomization method, and provide a powder that can obtain lower loose ratio, lower oxygen content and better powder metallurgy performance. copper powder

Method used

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Embodiment Construction

[0009] The atomization method is a method for preparing low-oxygen and low-porosity copper-based powder. It is to melt metal copper into copper liquid and then atomize it, and then obtain copper-based powder through suction filtration. During the atomization process, the nozzle located under the copper liquid has Two, and located on the same vertical straight line, constitute a double focus, the diameter of the nozzle hole is 1.3 mm, 24 holes, the angle of the atomization top angle, the upper nozzle is 30 degrees, and the lower nozzle is 20 degrees. The water pressure of the nozzle is 25MPa, and the copper powder with low bulk ratio, low oxygen content and high powder metallurgy performance described in the present invention can be produced.

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Abstract

The invention discloses a method for preparing copper-based powder with low oxygen content and low apparent density through atomization, which comprises the following steps: melting metallic coppers into liquid copper; atomizing the liquid copper; carrying out absorption and filtration on the atomized liquid copper so as to obtain the copper-based powder. The invention is characterized in that in the process of atomization, two nozzles are arranged below the liquid copper, and arranged in a same vertical line so as to form two focuses; the diameter of an orifice is 1.2 to 1.5mm; and atomized vertical angles are respectively 28 to 32 degrees and 18 to 22 degrees. The copper-based powder prepared by using the method of the invention has the advantages of low oxygen content, low apparent density and good metallurgical properties.

Description

technical field [0001] The invention relates to a method for preparing low-oxygen and low-porosity copper-based powder by an atomization method, especially the nozzle and the water pressure of the nozzle in the atomization process. Background technique [0002] At present, the industrial production methods of copper powder mainly include electrolysis method, redox method and atomization method. The copper powder obtained by different production methods has different characteristics, and also has different application ranges in industry, but the advantage of atomization method is the production The cost is low, so the atomization method is a commonly used method for producing copper powder at present. The production of copper powder by the atomization method mainly includes the following production steps: first, the copper block is melted into copper liquid, and a high-pressure nozzle is installed under the copper liquid to spray high-pressure water into the copper liquid tha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/08
Inventor 陆道昌
Owner 铜陵铜基粉体科技有限公司
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