CN101972854A - Method for preparing copper-based powder with low oxygen content and low apparent density through atomization - Google Patents
Method for preparing copper-based powder with low oxygen content and low apparent density through atomization Download PDFInfo
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- CN101972854A CN101972854A CN201010538288XA CN201010538288A CN101972854A CN 101972854 A CN101972854 A CN 101972854A CN 201010538288X A CN201010538288X A CN 201010538288XA CN 201010538288 A CN201010538288 A CN 201010538288A CN 101972854 A CN101972854 A CN 101972854A
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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
The present invention relates to atomization and prepare the low pine of hypoxemia than the nozzle of method, the especially atomization process of Cu-base powder and the hydraulic pressure of nozzle.
Background technology
The industrialized preparing process of copper powder mainly comprises electrolysis, oxidation-reduction method and atomization at present, the copper powder that different production methods reaches has different features, industrial different ranges of application arranged also, it is low that but the advantage of atomization is a production cost, so atomization is the method a kind of commonly used of producing copper powder at present.Atomization is produced copper powder and is mainly comprised following production stage: earlier copper billet is molten into copper liquid, below copper liquid, be provided with the reverse copper liquid that flows down that sprays to of high pressure nozzle ejection water under high pressure, reach atomizing, dewater again, dry, oxidation, technologies such as reduction make copper powder, at present in the production technology of above-mentioned atomization, nozzle adopts one, constitute single focus, the atomizing drift angle is generally 35 degree, the hydraulic pressure of nozzle is 15 ~ 16 Mpa, the copper powder oxygen content of producing is higher, is generally 0.25-0.35%, and pine is more higher than also, be generally 2.5-3.5g/cm3, for reducing loose ratio, obtain better powder metallurgy performance, people have also carried out a large amount of research, as the Chinese patent literature patent No. method that a kind of water atomization is produced copper powder for the CN03136699.6 name is called, the pine that this method is produced the gained copper powder is than for below the 2.9g/cm3, makes the pine ratio of the copper powder that atomization produces obtain decline, and the powder metallurgy performance of copper powder is improved.But, the pine of the copper powder that above-mentioned production method is produced is more higher than still, and oxygen content is also higher, and powder produces the space that metallurgical performance still can have further improvement, be difficult to satisfy modern industry to more low oxygen content, lower loose ratio, the better good requirement of powder metallurgy performance.
Summary of the invention
Purpose of the present invention is exactly to solve the copper powder that existing atomization is produced, Song Bigao, and hyperoxic problem provides a kind of and can access lower pine than, low oxygen content more, the copper powder of better powder metallurgy performance.
The technical solution used in the present invention is: atomization prepares the method for the low pine of hypoxemia than Cu-base powder, it is to atomize after metallic copper is molten into copper liquid, make Cu-base powder through suction strainer again, it is characterized in that the nozzle that is positioned at copper liquid below in the described atomization process has two, and be positioned on the same vertical straight line, constitute bifocus, the diameter of spray orifice is 1.2 ~ 1.5 millimeters, and the angle of atomizing drift angle is respectively 28 ~ 32 degree and 18 ~ 22 degree.
Adopt technique scheme, the pine ratio and the oxygen content of the copper powder of gained can both be effectively reduced, and have improved the powder metallurgy performance of copper powder greatly.
For obtaining lower pine than, the copper powder of low oxygen content more, the hydraulic pressure of described nozzle is 24 ~ 26MPa.
Adopt above-mentioned two schemes, the Song Bikeda 1.5-2.0g/cm3 of gained copper powder, pine is than reducing 1-1.5g/cm3, and the pine of reduction is improved and gives birth to bad intensity than the powder metallurgy that has improved copper powder greatly, reduces industry production costs about 30% such as heat pipe; The copper powder oxygen content that this method is produced is 0.05-0.1%, reduces oxygen content and is about 0.2%, reduces oxygen content and can improve metal dust purity, improves the sintering character of copper powder, improves the intensity of sintering stability and goods.
In sum, the invention has the beneficial effects as follows: reduced pine ratio and oxygen content that atomization is produced copper powder, improved greatly, the powder metallurgy performance of copper powder more can satisfy the demand of modern industry to the high-performance copper powder.
The specific embodiment
Atomization prepares the method for the low pine of hypoxemia than Cu-base powder, it is to atomize after metallic copper is molten into copper liquid, make Cu-base powder through suction strainer again, the nozzle that is positioned at copper liquid below in the atomization process has two, and is positioned on the same vertical straight line, constitute bifocus, the diameter of spray orifice is 1.3 millimeters, 24 holes, the angle of atomizing drift angle, top nozzle is 30 degree, and following nozzle is 20 degree.The hydraulic pressure of nozzle is 25MPa, can produce the copper powder of low pine ratio of the present invention, low oxygen content, high powder metallurgy performance.
Claims (2)
1. atomization prepares the method for the low pine of hypoxemia than Cu-base powder, it is to atomize after metallic copper is molten into copper liquid, make Cu-base powder through suction strainer again, it is characterized in that the nozzle that is positioned at copper liquid below in the described atomization process has two, and be positioned on the same vertical straight line, constitute bifocus, the diameter of spray orifice is 1.2 ~ 1.5 millimeters, and the angle of atomizing drift angle is respectively 28 ~ 32 degree and 18 ~ 22 degree.
2. atomization according to claim 1 prepares the method for the low pine of hypoxemia than Cu-base powder, and the hydraulic pressure that it is characterized in that described nozzle is 24 ~ 26MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010538288XA CN101972854A (en) | 2010-11-09 | 2010-11-09 | Method for preparing copper-based powder with low oxygen content and low apparent density through atomization |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010538288XA CN101972854A (en) | 2010-11-09 | 2010-11-09 | Method for preparing copper-based powder with low oxygen content and low apparent density through atomization |
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| CN101972854A true CN101972854A (en) | 2011-02-16 |
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| CN201010538288XA Pending CN101972854A (en) | 2010-11-09 | 2010-11-09 | Method for preparing copper-based powder with low oxygen content and low apparent density through atomization |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104511594A (en) * | 2014-12-25 | 2015-04-15 | 安徽旭晶粉体新材料科技有限公司 | Improved process for producing copper alloy powder by water atomization method |
| CN105458246A (en) * | 2015-12-08 | 2016-04-06 | 南通金源智能技术有限公司 | Low-oxygen fine metal powder for 3D printing and preparation method of low-oxygen fine metal powder |
| CN105583405A (en) * | 2011-11-28 | 2016-05-18 | 重庆有研重冶新材料有限公司 | Method for preparing metal powder in atomizing manner |
| CN105689729A (en) * | 2011-11-28 | 2016-06-22 | 重庆有研重冶新材料有限公司 | Atomization production method for high-quality tin powder |
| CN105728737A (en) * | 2011-11-28 | 2016-07-06 | 重庆有研重冶新材料有限公司 | Preparation method for anti-oxidation lead powder |
| CN105728736A (en) * | 2011-11-28 | 2016-07-06 | 重庆有研重冶新材料有限公司 | Method for preparing anti-oxidation tin powder |
| CN113134614A (en) * | 2021-04-22 | 2021-07-20 | 昆明冶金研究院有限公司 | Copper powder for low-oxygen spherical injection molding and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4940523A (en) * | 1988-06-09 | 1990-07-10 | Nisshin Steel Company Ltd. | Process and apparatus for coating fine powders |
| JPH0517801A (en) * | 1991-07-10 | 1993-01-26 | Kobe Steel Ltd | Production of diffusion type low-alloy steel powder having excellent compressibility |
| CN1552546A (en) * | 2003-05-29 | 2004-12-08 | 中科铜都粉体新材料股份有限公司 | Method for preparing copper powder by water atomization method |
| CN1824435A (en) * | 2006-04-07 | 2006-08-30 | 郭德林 | Spray method for preparing low apparent density bronze powder |
| CN101596601A (en) * | 2009-07-09 | 2009-12-09 | 中南大学 | Be used for the atomizer that high efficiency prepares fine metal and alloy powder |
-
2010
- 2010-11-09 CN CN201010538288XA patent/CN101972854A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4940523A (en) * | 1988-06-09 | 1990-07-10 | Nisshin Steel Company Ltd. | Process and apparatus for coating fine powders |
| JPH0517801A (en) * | 1991-07-10 | 1993-01-26 | Kobe Steel Ltd | Production of diffusion type low-alloy steel powder having excellent compressibility |
| CN1552546A (en) * | 2003-05-29 | 2004-12-08 | 中科铜都粉体新材料股份有限公司 | Method for preparing copper powder by water atomization method |
| CN1824435A (en) * | 2006-04-07 | 2006-08-30 | 郭德林 | Spray method for preparing low apparent density bronze powder |
| CN101596601A (en) * | 2009-07-09 | 2009-12-09 | 中南大学 | Be used for the atomizer that high efficiency prepares fine metal and alloy powder |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105583405A (en) * | 2011-11-28 | 2016-05-18 | 重庆有研重冶新材料有限公司 | Method for preparing metal powder in atomizing manner |
| CN105689729A (en) * | 2011-11-28 | 2016-06-22 | 重庆有研重冶新材料有限公司 | Atomization production method for high-quality tin powder |
| CN105728737A (en) * | 2011-11-28 | 2016-07-06 | 重庆有研重冶新材料有限公司 | Preparation method for anti-oxidation lead powder |
| CN105728736A (en) * | 2011-11-28 | 2016-07-06 | 重庆有研重冶新材料有限公司 | Method for preparing anti-oxidation tin powder |
| CN105583405B (en) * | 2011-11-28 | 2018-04-06 | 重庆有研重冶新材料有限公司 | A kind of method that atomization prepares metal dust |
| CN104511594A (en) * | 2014-12-25 | 2015-04-15 | 安徽旭晶粉体新材料科技有限公司 | Improved process for producing copper alloy powder by water atomization method |
| CN105458246A (en) * | 2015-12-08 | 2016-04-06 | 南通金源智能技术有限公司 | Low-oxygen fine metal powder for 3D printing and preparation method of low-oxygen fine metal powder |
| CN113134614A (en) * | 2021-04-22 | 2021-07-20 | 昆明冶金研究院有限公司 | Copper powder for low-oxygen spherical injection molding and preparation method thereof |
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Application publication date: 20110216 |