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Copper powder water atomization system and atomization structure thereof

A technology of water atomization and copper powder, which is applied in the field of copper powder water atomization system and its atomization structure, can solve the problems of irregular shape of copper powder particles, low atomization efficiency, agglomeration and segregation, etc., and achieve smooth surface , Accelerate cutting efficiency and reduce particle size

Active Publication Date: 2020-09-08
湖南省天心博力科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The water mist pulverization method is an important method for preparing metal and alloy powders. It refers to the method of using water as the atomization medium to impact the liquid metal cluster at a certain speed, so that the liquid metal droplets condense into fine powder; The copper powder particles are prone to adhesion, so the shape of the copper powder particles produced is irregular; the metal powder prepared by gas atomization has good sphericity, but the average particle size is large, the particle size distribution is wide, and it is easy to agglomerate and segregation, low atomization efficiency

Method used

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  • Copper powder water atomization system and atomization structure thereof
  • Copper powder water atomization system and atomization structure thereof
  • Copper powder water atomization system and atomization structure thereof

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Experimental program
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Effect test

Embodiment 1

[0038] Reference figure 1 , A copper powder water atomization system, comprising: a melting module for heating and melting solid metal copper at high temperature to obtain liquid copper; a water atomization module for impacting liquid copper into copper powder; a cooling module for The copper powder is cooled; the drying module is used to dry the copper powder to remove the surface moisture of the copper powder; the screening module is used to siev the copper powder to obtain the copper powder of the target particle size; the collection module is used to remove the target Copper powder is collected; reprocessing module: used to introduce copper powder that has not reached the target particle size into the melting module for re-water atomization.

[0039] reference figure 2 , The water atomization method in the copper powder water atomization system includes the following steps:

[0040] S1: Melting solid copper metal to obtain molten metal;

[0041] S2: Flatten the molten metal thr...

Embodiment 2

[0053] The difference from the embodiment is that the atomization structure in this embodiment also includes a cutting assembly for re-cutting the crushed metal powder. Refer to figure 1 , The cutting assembly includes a cutting cylinder 6, the cutting cylinder 6 is located below the high-pressure gas ring 5, the cutting cylinder 6 and the high-pressure gas ring 5 are arranged coaxially, and the inner wall of the cutting cylinder 6 is embedded with a plurality of laser generators. The laser generator 7 can emit laser light. The crushed metal particles move inside the cutting cylinder 6 due to gravity and high-pressure gas. The laser generator 7 cuts the crushed metal particles inside the cutting cylinder 6 again to reduce The particle size of the metal droplets enhances the atomization effect of the metal liquid.

[0054] Further, refer to figure 1 with 6 A mounting ring 8 is fixedly provided on the outer wall of the cutting cylinder 6, a rotating sleeve 9 is provided on the outsi...

Embodiment 3

[0056] The difference from Example 2 is that reference figure 1 with Figure 5 In this embodiment, the outer wall of the cutting cylinder 6 is fixedly provided with a wave ring 15, and the inner side of the spacer 14 is provided with a roller 16 rotatably connected with the spacer 14 and adapted to the wave edge of the wave ring 15; An elastic member 10 is arranged between the spline end surface and the spline groove wall of the rotating sleeve 9. While the cutting drum 6 in this embodiment is rotating, the wave ring 15 is in contact with the roller 16. Since the position of the roller 16 is fixed, the cutting drum 6 will follow the wave edge on the wave ring 15 to move up and down, which speeds up the cutting efficiency. In the example, the rotation and the up and down movement of the cutting cylinder 6 share a power source, and the structure is compact.

[0057] In this embodiment, in order to cooperate with the up and down movement of the cutting barrel 6, an annular telescopi...

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Abstract

The invention discloses a copper powder water atomization system and an atomization structure thereof. The copper powder water atomization system comprises a molten module, a water atomization module,a cooling module, a drying module, a screening module, a collecting module and a reprocessing module. The atomization structure of the water atomization module carries out following water atomizationtreatment on copper powder, two beams of symmetrically-distributed stable water flows carry out flattening treatment on molten metal, molten metal flowing a piece shape is formed, the piece-shaped molten metal is subjected to shock treatment, the piece-shaped molten metal is in a flat state under the water pressure of the two sides, the thickness is uniform, through high-pressure inert gas flow,water and the piece-shaped molten metal are blown to enable the piece-shaped metal to be broken, the broken molten metal is subjected to laser cutting, metal particles with the lower granularity is obtained, the copper powder water atomization system is combined with gas atomization advantages, the molten metal is subjected to breaking cutting after laminarization, and spherical powder with the small conglutination and the smooth surface can be obtained.

Description

Technical field [0001] The invention relates to the technical field of copper powder preparation technology, in particular to a copper powder water atomization system and an atomization structure thereof. Background technique [0002] Copper powder is the main raw material for preparing self-lubricating bearings. Electrolytic copper powder is often used in production. Electrolytic copper powder has a dendritic structure, low bulk density and good toughness, which can improve the green strength of bronze powder and the shrinkage rate of powder products. However, the preparation of electrolytic copper powder is a method of producing copper powder with high pollution and high energy consumption, and the electrolytic copper powder is not conducive to sintering, and its dendritic structure easily forms closed pores during the sintering process, which seriously affects the performance of oil-containing bearings. [0003] At present, the copper powder milling technology mainly uses the fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/08
CPCB22F9/082B22F2009/0828B22F2009/084B22F2009/088B22F2009/0892
Inventor 张拥军李钢黄雄辉杨丛红
Owner 湖南省天心博力科技有限公司
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