CN105583405B - A kind of method that atomization prepares metal dust - Google Patents
A kind of method that atomization prepares metal dust Download PDFInfo
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- CN105583405B CN105583405B CN201610156478.2A CN201610156478A CN105583405B CN 105583405 B CN105583405 B CN 105583405B CN 201610156478 A CN201610156478 A CN 201610156478A CN 105583405 B CN105583405 B CN 105583405B
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- metal
- atomization
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- metal dust
- oxidation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
- B22F1/102—Metallic powder coated with organic material
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- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
A kind of method that atomization prepares metal dust, including the step such as metal molten, atomization, the addition BTA additive in the atomization process, the 0.005%~0.05% of the molten metal weight that its addition is accounted for after fusing.The present invention during producing metal dust in atomization by selecting a kind of additive; utilize the property of additive itself; the favorable environment of interaction and the atomization of additive and metal so that additive gasification forms the protective layer of one layer of anti-oxidation and caking in metal powder surface；The metal dust products such as lead powder, glass putty, copper powder using the inventive method production, using conventional packaging, because the return of goods that oxidation and caking occur reduce more than 98%, metal dust product oxidation deterioration rate can be effectively controlled 0.5%~5%, be effectively reduced using conventional packaging production cost, production system security it is good, return of goods rate is considerably reduced, remarkable in economical benefits, while the working environment of employee is improved, physical and mental health is guaranteed.
Description
The present patent application is special for the invention on November 28th, 2011 for Application No. 201110385505.0, the applying date
The divisional application of profit.
Technical field
The present invention relates to a kind of production method of metal dust, and in particular to a kind of atomization production method of metal dust,
Belong to metallurgical technology field.
Background technology
Atomization production metal dust is a kind of widely used technology, and the application of product is also suitable wide.Mesh
The production of preceding metal dust such as lead powder, glass putty etc. uses gas atomization, and its basic production technology is：The first step, metal
Fusing, fusion temperature are higher than melting point metal 50 DEG C~100 DEG C；Second step, in atomization plant, utilize 0.3MP~1.2MP height
Air atomizing metal liquid stream is pressed, is made in accordance with dimension, desired powder；3rd step, cooling collection powder；4th step, through cooling
Powder sieved；5th step, product vacuum packaging.Because the metal dust exposure of current atomization production is easy in atmosphere
Oxidation deterioration, therefore vacuum packaging is used, but the product produced under existing production technology situation, problems be present：
1st, easily there is various gas leakage situations in vacuum packaging, causes the oxidation of powder；2nd, it is vacuum-packed because external and internal pressure is poor, lead powder
End and tin powder are easy to lump；3rd, the powder for aoxidizing and luming re-works the substantial amounts of cost of increase, at the same the volatilization of powder and
Fly upward, cause metal loss, volatilizing and flying upward is also easy to cause heavy metal poisoning.
The content of the invention
The purpose of invention is to provide a kind of method that atomization prepares metal dust, metal dust antioxygen made from this method
Change excellent performance.
The purpose of the present invention is achieved by the following technical solution：
A kind of method that atomization prepares metal dust, including the step such as metal molten, atomization, it is characterised in that：Described
Addition BTA additive in atomization process, the 0.005%~0.05% of the molten metal weight that its addition is accounted for after fusing.
Above-mentioned BTA additive, its molecular formula：C6H5N3, outward appearance are white, micro- yellow or blush acicular crystal,
Molecular weight 119.0, boiling point：204 DEG C (pressure 2KPa), fusing point：100 DEG C, be commercially available prod.
| Index name | Index |
| Purity | >=99.8% |
| Colourity | ≤ No. 40 |
| Moisture | ≤ 0.04% |
| Fusing point | ≥100℃ |
| Ash | ≤ 0.03% |
| PH value | 5-6 |
Inventor have selected multiple additives in the R＆D process of atomization production metal dust prevents metal dust from producing
The oxidation of product, or but obtained metal dust product be at least up to more than 45% using the product aoxidized after conventional packaging,
It can not promote, product antioxidant effect is undesirable does not reach industrial requirement；There is safety issue, whole production
The bad control of process.Inventor has done substantial amounts of experimental study, have finally chosen BTA additive and in atomization process
Middle addition, while the addition of BTA is also worthy of careful study very much, controls the amount ranges in the present invention to cause production process
The oxidation resistance of the good while final metal dust product of security is good, and ultimogenitary metal dust product is wrapped using conventional
Dress, its oxidation deterioration rate is only 4~5% or so.
In order to further improve the oxidation resistance of obtained metal dust product, above-mentioned BTA additive adds
Enter temperature be 210-283 DEG C, pressure be 0.8~0.95 standard atmospheric pressure；It may be such that the metal dust product of production using normal
Rule packaging, its oxidation deterioration rate is only 2~3% or so.
It is highly preferred that in order to further improve the oxidation resistance of security performance and metal dust product, above-mentioned benzo three
The addition temperature of nitrogen azoles additive is 250-275 DEG C, be passed through in metal liquid stream atomization process the pressure of pressure-air for 0.6~
0.8Mpa, melting temperature metal are higher than melting point metal 75 DEG C~90 DEG C；The metal dust product of production is packed using conventional, its oxygen
It is only 0.5~1.0% or so to change deterioration rate.
Specifically, a kind of method that atomization prepares metal dust, including the step such as metal molten, atomization, its feature exist
In：The addition BTA additive in the atomization process, the 0.01% of the molten metal weight that its addition is accounted for after fusing
~0.04%, the addition temperature of the BTA additive is 250~275 DEG C, pressure is 0.8~0.95 normal atmosphere
Press, the pressure that pressure-air is passed through in metal liquid stream atomization process is 0.6~0.8Mpa, and melting temperature metal is higher than melting point metal
75 DEG C~90 DEG C；Security of system is good, easily controllable in whole production process, while the metal dust product produced only needs to use
Conventional packaging, its oxidation deterioration rate is only 0.5~1.0% or so.
Those of ordinary skill in the art can be by the different productive prospecting of known each metal in atomization, using routine techniques
Control remaining technological parameter that different metal dusts is made.
The present invention has following beneficial effect：
The present invention utilizes the property of additive itself by selecting a kind of additive during producing metal dust in atomization
The favorable environment of interaction and the atomization of matter, additive and metal so that additive gasification is formed in metal powder surface
The protective layer of one layer of anti-oxidation and caking；By production practices, using lead powder, glass putty, copper powder of the inventive method production etc.
Metal dust product, reduce more than 98% using conventional packaging, the return of goods occurred because of oxidation and caking, metal dust product
Oxidation deterioration rate can be effectively controlled 0.5%~5%, be effectively reduced using conventional packaging production cost, production system
Security is good, and return of goods rate is considerably reduced, remarkable in economical benefits, while the working environment of employee is improved, be physically and mentally healthy
It is guaranteed.
Embodiment
The present invention is specifically described below by embodiment, it is necessary to it is pointed out here that be that following examples are only used
It is further described in the present invention, it is impossible to be interpreted as limiting the scope of the invention, the people that is skilled in technique in the field
Member can make some nonessential modifications and adaptations according to the invention described above content to the present invention.
Embodiment 1
A kind of method that atomization prepares metal dust, carry out in the steps below：
A. dissolving obtains metal liquid stream in metal molten stove, and fusion temperature is higher than melting point metal temperature 75~90 DEG C；
B. the pressure-air that pressure is 0.6~0.8Mpa is passed through in atomization plant and is atomized metal liquid stream, be passed through simultaneously
BTA additive, the BTA additive addition are accounted for into the metal liquid stream weight of atomization plant
0.02%~0.03%, the addition temperature of the BTA additive is 264~275 DEG C, pressure is 0.8~0.95 mark
Quasi- atmospheric pressure；
C. it is cooled to normal temperature collection powder；
D. sieve, be standby or for sale through being routinely packaged into bag.
Those of ordinary skill in the art can be by the different productive prospecting of known each metal in atomization, using routine techniques
Control remaining technological parameter that different metal dusts is made.
Security is good in above method production process；Obtained oxidization of metal powder deterioration rate is only 0.5~0.8%, pin
The return of goods, conventional packaging, remarkable in economical benefits are there's almost no after sale.
Embodiment 2~6：According to the following steps and technique productions metal dust, remaining is the same as embodiment 1.
Oxidization of metal powder deterioration rate is only 0.8~5% made from the above method, conventional packaging, remarkable in economical benefits；System
Security is good during standby.
Claims (1)
1. a kind of method that atomization prepares metal dust, it is characterised in that carry out in the steps below：
(1) melted in metal molten stove and obtain metal liquid stream, fusion temperature is higher than melting point metal temperature 100 DEG C；
(2) pressure-air that pressure is 0.3Mpa is passed through in atomization plant and is atomized metal liquid stream, while be passed through the nitrogen of benzo three
Azoles additive, the BTA additive addition account for 0.03% into the metal liquid stream weight of atomization plant, described
The addition temperature of BTA additive is 250 DEG C, pressure is 0.8~0.95 standard atmospheric pressure；
(3) it is cooled to normal temperature collection powder；
(4) sieve, be standby or for sale through being routinely packaged into bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610156478.2A CN105583405B (en) | 2011-11-28 | 2011-11-28 | A kind of method that atomization prepares metal dust |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110385505.0A CN103128298B (en) | 2011-11-28 | 2011-11-28 | A kind of production method of metal dust |
| CN201610156478.2A CN105583405B (en) | 2011-11-28 | 2011-11-28 | A kind of method that atomization prepares metal dust |
Related Parent Applications (1)
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| CN201110385505.0A Division CN103128298B (en) | 2011-11-28 | 2011-11-28 | A kind of production method of metal dust |
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| CN105583405A CN105583405A (en) | 2016-05-18 |
| CN105583405B true CN105583405B (en) | 2018-04-06 |
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| CN201610156263.0A Active CN105583404B (en) | 2011-11-28 | 2011-11-28 | A kind of method for the metal dust for preparing good in oxidation resistance |
| CN201110385505.0A Active CN103128298B (en) | 2011-11-28 | 2011-11-28 | A kind of production method of metal dust |
| CN201610156478.2A Active CN105583405B (en) | 2011-11-28 | 2011-11-28 | A kind of method that atomization prepares metal dust |
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| CN201110385505.0A Active CN103128298B (en) | 2011-11-28 | 2011-11-28 | A kind of production method of metal dust |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104511594B (en) * | 2014-12-25 | 2016-08-24 | 安徽旭晶粉体新材料科技有限公司 | The technique that a kind of modified model water fog method produces copper alloy powder |
| CN109865832A (en) * | 2019-04-02 | 2019-06-11 | 柳州光华科技有限公司 | A kind of deep working method of copper metal powder |
| CN113351873A (en) * | 2021-06-08 | 2021-09-07 | 金川镍钴研究设计院有限责任公司 | Production method of low-oxygen stainless steel powder for injection molding |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07113106A (en) * | 1993-10-12 | 1995-05-02 | Daido Kagaku Kogyo Kk | Method for preventing oxidation of nonferrous metallic powder in production of nonferrous metallic powder |
| CN101134244A (en) * | 2007-09-06 | 2008-03-05 | 安泰科技股份有限公司 | Method for producing stainless steel powder containing nitrogen/ high nitrogen by adopting gas atomization method |
| CN101695755A (en) * | 2009-10-26 | 2010-04-21 | 江西悦安超细金属有限公司 | Method for preparing alloy powder for metal injection moulding through atomization |
| CN101972854A (en) * | 2010-11-09 | 2011-02-16 | 铜陵铜基粉体科技有限公司 | Method for preparing copper-based powder with low oxygen content and low apparent density through atomization |
| CN102218539A (en) * | 2011-05-26 | 2011-10-19 | 江苏科技大学 | Method for preparing ultrafine silver powder |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05195024A (en) * | 1992-01-14 | 1993-08-03 | Nippon Steel Corp | Method for preventing oxidation of metal powder during production of metal powder |
| JPH0741811A (en) * | 1993-07-30 | 1995-02-10 | Nippon Steel Corp | Method for preventing oxidation of metallic powder according to production of metallic powder |
| CN101254541A (en) * | 2008-01-21 | 2008-09-03 | 中南大学 | Preparation of nano aluminum powder for conducting resin and storage method |
| CN101992300A (en) * | 2010-11-04 | 2011-03-30 | 江苏大方金属粉末有限公司 | Preparation method for sintered copper powder material of heat pipe |
-
2011
- 2011-11-28 CN CN201610156263.0A patent/CN105583404B/en active Active
- 2011-11-28 CN CN201110385505.0A patent/CN103128298B/en active Active
- 2011-11-28 CN CN201610156478.2A patent/CN105583405B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07113106A (en) * | 1993-10-12 | 1995-05-02 | Daido Kagaku Kogyo Kk | Method for preventing oxidation of nonferrous metallic powder in production of nonferrous metallic powder |
| CN101134244A (en) * | 2007-09-06 | 2008-03-05 | 安泰科技股份有限公司 | Method for producing stainless steel powder containing nitrogen/ high nitrogen by adopting gas atomization method |
| CN101695755A (en) * | 2009-10-26 | 2010-04-21 | 江西悦安超细金属有限公司 | Method for preparing alloy powder for metal injection moulding through atomization |
| CN101972854A (en) * | 2010-11-09 | 2011-02-16 | 铜陵铜基粉体科技有限公司 | Method for preparing copper-based powder with low oxygen content and low apparent density through atomization |
| CN102218539A (en) * | 2011-05-26 | 2011-10-19 | 江苏科技大学 | Method for preparing ultrafine silver powder |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105583404A (en) | 2016-05-18 |
| CN105583404B (en) | 2018-05-08 |
| CN103128298A (en) | 2013-06-05 |
| CN103128298B (en) | 2016-02-10 |
| CN105583405A (en) | 2016-05-18 |
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