Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

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

Active Publication Date: 2017-04-26
JIANGSU BOQIAN NEW MATERIALS
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The wet chemical method generally has many process steps, and it is difficult to control the particle size and shape of the powder, and some metal powders are not suitable for the preparation of the wet chemical method, so the application range is narrow, and the shape of the powder is irregular; in addition, the wet preparation process Produce a large amount of waste gas, waste water, waste residue, etc., and face severe environmental problems, so it is not conducive to industrial production

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
  • Preparation method of hollow or solid spherical metal powder
  • Preparation method of hollow or solid spherical metal powder
  • Preparation method of hollow or solid spherical metal powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) Using Ni powder with an average particle size of 0.6 micron as raw material, mix Ni powder, water-based solvent, mixed binder and dispersant according to the mass ratio of 1:0.43:0.03:0.002, and put it into the basket sand Grind and disperse in a mill for 12 hours, and finally add n-butanol accounting for 0.1‰ of Ni powder as a defoamer, and continue stirring for 1 hour to obtain a slurry. Wherein, the water-based solvent is a mixed solution of deionized water and absolute ethanol with a mass ratio of 1:0.5; the binder is a mixed binder of polyvinyl alcohol and phenolic resin with a mass ratio of 1:1.

[0037](2) Use a centrifugal spray dryer to spray dry the slurry. The feed rate is 15kg / h, the inlet and outlet temperatures are adjusted to 300°C and 129°C respectively, and the rotation speed of the atomizing disc is 14000rpm. The particles are pumped away to obtain hollow spherical Ni powder.

[0038] (3) Put the obtained hollow dry particles into heat treatment e...

Embodiment 2

[0040] (1) Using Ni powder with an average particle size of 0.6um as raw material, mix Ni powder, water-based solvent, mixed binder and dispersant according to the mass ratio of 1:0.54:0.015:0.002, and put it into the basket sand Grind and disperse in a mill for 12 hours, and finally add n-butanol accounting for 0.1‰ of Ni powder as a defoamer, and continue stirring for 1 hour to obtain a slurry. Wherein, the water-based solvent is a mixed solution of deionized water and absolute ethanol with a mass ratio of 1:1; the binder is a mixed binder of polyvinyl alcohol and phenolic resin with a mass ratio of 1:1.

[0041] (2) Use a centrifugal spray dryer to spray dry the slurry. The feed rate is 18kg / h. The inlet and outlet temperatures are adjusted to 260°C and 103°C respectively. The rotation speed of the atomizing disc is 18500rpm. The particles are pumped away to obtain solid spherical Ni powder.

[0042] (3) Put the obtained solid dry particles into heat treatment equipment, h...

Embodiment 3

[0044] (1) Using CuMn alloy powder (about 25% Mn content) with an average particle size of 1.0um as raw material, mix CuMn alloy powder, water-based solvent, mixed binder and dispersant in a mass of 1:0.82:0.01:0.002 Proportionally mixed, put into a basket sand mill for grinding and dispersing for 12 hours, and finally add n-butanol accounting for 0.1‰ of the mass of Ni powder as a defoamer, and continue stirring for 1 hour to obtain a slurry. Wherein, the water-based solvent is a mixed solution of deionized water and absolute ethanol with a mass ratio of 1:0.67; the binder is a mixed binder of polyvinyl alcohol and phenolic resin with a mass ratio of 1:0.8.

[0045] (2) Use a centrifugal spray dryer to spray dry the slurry. The feed rate is 18kg / h. The inlet and outlet temperatures are adjusted to 300°C and 116°C respectively. The particles are pumped away to obtain solid spherical CuMn alloy powder.

[0046] (3) Put the obtained solid dry particles into heat treatment equip...

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

PropertyMeasurementUnit
viscosityaaaaaaaaaa
particle sizeaaaaaaaaaa
bulk densityaaaaaaaaaa
Login to View More

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.

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

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
Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/04
Inventor 宋书清陈钢强许高杰谢上川
Owner JIANGSU BOQIAN NEW MATERIALS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap 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