Preparation method of hollow or solid spherical metal powder

A metal powder and metal powder technology, applied in the field of materials, can solve the problems of difficult control of powder particle size and shape, unfavorable industrial production, irregular powder shape, etc., and achieve high sphericity, improved powder purity, flow good effect
CN104942300BActive Publication Date: 2017-04-26JIANGSU BOQIAN NEW MATERIALS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
JIANGSU BOQIAN NEW MATERIALS
Publication Date
2017-04-26

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Abstract

A preparation method of hollow or solid spherical metal powder includes the steps that metal powder or alloy powder or pre-mixed powder is mixed or subjected to grain size gradation according to the component proportion; the particle size distribution of the mixed powder or the powder subjected to grain size gradation meets the requirements that D50 is 0.3-3.5 microns, and D90 is smaller than or equal to 5.0 microns; then, the powder, a water-based solvent, adhesion agents, dispersing agents and defoaming agents are mixed in proportion, grinding and dispersing are performed, slurry which is dispersed and evenly mixed is obtained, and the viscosity of the slurry is not larger than 1.5 Pa*s; the slurry is pumped into a spraying dryer to be dried; next, the slurry is transferred to a thermal treatment device and subjected to thermal treatment, and the product is obtained when temperature is lowered to be room temperature through cooling. The preparation method has the advantages that the technological steps are simple, and waste is little.
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Description

technical field

[0001] The invention belongs to the technical field of materials, and relates to a method for preparing micron-sized spherical metal powder, in particular to a method for preparing hollow or solid spherical metal powder.

[0002] technical background

[0003] As the main industrial raw material, metal powder is used in almost all industries of the national economy, and is widely used in machinery, metallurgy, chemical industry, aerospace and other fields. With the development of modern science and technology, micron and submicron spherical metal powders have become the basis for transforming and promoting the development of emerging industries such as paint coatings, thermal spraying, electronic technology, functional materials, powder metallurgy, 3D printing and biotechnology; The requirements for the quality of the powder itself are getting higher and higher, and the preparation of metal powder is developing in the direction of high purity, fineness, control...

Claims

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