CN105583405A - Method for preparing metal powder in atomizing manner - Google Patents
Method for preparing metal powder in atomizing manner Download PDFInfo
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- CN105583405A CN105583405A CN201610156478.2A CN201610156478A CN105583405A CN 105583405 A CN105583405 A CN 105583405A CN 201610156478 A CN201610156478 A CN 201610156478A CN 105583405 A CN105583405 A CN 105583405A
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- metal
- atomizing
- addition agent
- powder
- atomization
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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
The invention provides a method for preparing metal powder in an atomizing manner. The method comprises the steps of metal melting, atomizing and the like. In the atomizing process, a benzotriazole addition agent is added, and the quantity of the added addition agent accounts for 0.005-0.05% of the weight of molten metal. The addition agent is selected in the metal powder production process of the atomizing method, and nature of the addition agent, mutual action between the addition agent and the metal and beneficial environment for atomizing are utilized, so that the addition agent is gasified to form a protecting layer for preventing oxidization and agglomeration on the surface of the metal powder. Returns, caused by oxidization and agglomeration, of metal powder products such as lead powder, tin powder and copper powder produced by adopting the method and packaged conventionally are reduced by over 98%. The oxidative deterioration rate of the metal powder products can be effectively controlled to be 0.5-5%. By the adoption of conventional packaging, production cost is effectively reduced, safety of a production system is good, the return rate is reduced greatly, and economic benefits are remarkable. Meanwhile, working environment of staff is improved and physical and metal health is ensured.
Description
The present patent application be for application number be 201110385505.0, the applying date is on November 28th, 2011The divisional application of patent of invention.
Technical field
The present invention relates to a kind of production method of metal dust, be specifically related to a kind of atomization producer of metal dustMethod, belongs to metallurgical technology field.
Background technology
It is a kind of application technology very widely that atomization is produced metal dust, and the range of application of product is also suitable wide.Metal current powder is as the production employing gas atomization of lead powder, glass putty etc., and its basic production technology is: theOne step, the fusing of metal, fusion temperature than melting point metal high 50 DEG C～100 DEG C; Second step, at atomization plantIn, utilize the pressure-air atomization metal liquid stream of 0.3MP～1.2MP, make and conform with dimension, requirementPowder; The 3rd step, cooling collection powder; The 4th step, sieves through cooling powder; The 5th step, product vacuumPackaging. Because the metal dust that atomization is produced is at present exposed to oxidizable going bad in air, therefore all adopt trueEmpty package, but there is following problem: 1, vacuum packaging in the product of producing under existing production technology situationEasily there is various gas leakage situations, cause the oxidation of powder; 2, vacuum packaging is because external and internal pressure is poor, leadPowder and tin powder are easy to caking; 3, the grain weight of oxidation and caking is newly processed increases a large amount of costs, simultaneouslyThe volatilization of powder and flying upward, causes metal loss, volatilizees and flies upward and also easily cause heavy metal poisoning.
Summary of the invention
The object of invention is to provide a kind of atomization to prepare the method for metal dust, the metal powder that the method makesEnd antioxygenic property is good.
The object of the invention is to be achieved through the following technical solutions:
A method for metal dust is prepared in atomization, comprises the step such as metal molten, atomization, it is characterized in that:In described atomization process, add BTA additive, its addition accounts for molten metal weight after fusing0.005％～0.05％。
Above-mentioned BTA additive, its molecular formula: C6H5N3, outward appearance is white, micro-Huang or micro-redLook acicular crystal, molecular weight 119.0, boiling point: 204 DEG C (pressure 2KPa), and fusing point: 100 DEG C,For 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 has selected multiple additives to prevent metal powder in the R&D process of atomization production metal dustThe oxidation of end product, but or the metal dust product making adopt there is oxidation after conventional packaging product at leastReach more than 45%, cannot promote, product antioxidant effect is undesirable does not reach industrial requirement; Go outExisting safety issue, the bad control of whole production process. Inventor has done a large amount of experimental studies, finally selectsBTA additive adding in atomization process, the addition of BTA is also said very much simultaneouslyStudy carefully, be controlled at that amount ranges of the present invention makes the security of production process good, final metal dust product simultaneouslyOxidation resistance good, ultimogenitary metal dust product adopts conventional packaging, its oxidation deterioration rate is only4～5% left and right.
In order further to improve the oxidation resistance of the metal dust product making, above-mentioned BTA additiveThe temperature that adds be that 210-283 DEG C, pressure are 0.8～0.95 standard atmospheric pressure; Can make the metal powder of producingEnd product adopts conventional packaging, and its oxidation deterioration rate is only 2～3% left and right.
More preferably, in order further to improve the oxidation resistance of security performance and metal dust product, above-mentioned benzeneAnd the temperature that adds of triazole additive is 250-275 DEG C, in metal liquid stream atomization process, pass into pressure-airPressure is 0.6～0.8Mpa, melting temperature metal than melting point metal high 75 DEG C～90 DEG C; The metal dust of producingProduct adopts conventional packaging, and its oxidation deterioration rate is only 0.5～1.0% left and right.
Specifically, the method for metal dust is prepared in a kind of atomization, comprises the step such as metal molten, atomization, itsBe characterised in that: in described atomization process, add BTA additive, its addition accounts for the metal after fusing0.01%～0.04% of liquid weight, the temperature that adds of described BTA additive is 250～275 DEG C, pressesPower is 0.8～0.95 standard atmospheric pressure, the pressure that passes into pressure-air in metal liquid stream atomization process is 0.6～0.8Mpa, melting temperature metal than melting point metal high 75 DEG C～90 DEG C; Security of system in whole production processGood, be easy to control, the metal dust product of simultaneously producing only need adopt conventional packaging, its oxidation deterioration rate is only0.5～1.0% left and right.
Those of ordinary skill in the art can be by the different production feature of known each metal in atomization, adopts conventionalRemaining technological parameter of technology control makes different metal dusts.
The present invention has following beneficial effect:
The present invention, by producing in metal dust process and select a kind of additive at atomization, utilizes additive selfCharacter, the interaction of additive and metal and the favorable environment of atomization, gasify at metal additivePowder surface forms the protective layer of the anti-oxidation of one deck and caking; By production practices, application the inventive method is rawThe metal dust products such as the lead powder, glass putty, copper powder producing, adopt conventional packaging, because oxidation and caking occurThe return of goods have reduced more than 98%, and metal dust product oxidation deterioration rate can effectively be controlled at 0.5%～5%, adopt normalRule packaging production cost is reduced effectively, production system security is good, and return of goods rate is reduced greatly, warpJi remarkable benefit, while employee's working environment improves, physical and mental health is guaranteed.
Detailed description of the invention
Below by embodiment, the present invention is specifically described, is necessary to be pointed out that following examples at thisOnly be used to further illustrate the present invention, can not be interpreted as limiting the scope of the invention, this fieldPerson skilled in the art can make some nonessential improvement and tune to the present invention according to the invention described above contentWhole.
Embodiment 1
A method for metal dust is prepared in atomization, carries out in the steps below:
A. in metal molten stove, dissolve and obtain metal liquid stream, fusion temperature than melting point metal temperature high by 75～90℃；
B. the pressure-air that is 0.6～0.8Mpa by pressure passes in atomization plant by metal liquid stream atomization, togetherTime pass into BTA additive, described BTA additive addition accounts for and enters atomization and establish0.02%～0.03% of standby metal liquid stream weight, described BTA additive add temperatureBe that 264～275 DEG C, pressure are 0.8～0.95 standard atmospheric pressure;
C. be cooled to normal temperature collection powder;
D. screening, through routine be packaged into bag for subsequent use or for sale.
Those of ordinary skill in the art can be by the different production feature of known each metal in atomization, adopts conventionalRemaining technological parameter of technology control makes different metal dusts.
In said method production process, security is good; The metal dust oxidation deterioration rate making is only 0.5～0.8%,Exist and return goods hardly post sales, conventional packaging, remarkable in economical benefits.
Embodiment 2～6: according to the following steps and explained hereafter metal dust, all the other are with embodiment 1.
The metal dust oxidation deterioration rate that said method makes is only 0.8～5%, conventional packaging, and economic benefit is aobviousWork; In preparation process, security is good.
Claims (1)
1. a method for metal dust is prepared in atomization, it is characterized in that, carries out in the steps below:
(1) in metal molten stove, dissolve and obtain metal liquid stream, fusion temperature is higher 100 DEG C than melting point metal temperature;
(2) pressure-air that is 0.3Mpa by pressure passes in atomization plant metal liquid stream atomization, pass into BTA additive simultaneously, described BTA additive addition accounts for 0.03% left and right of the metal liquid stream weight that enters atomization plant, described BTA additive to add temperature to be about 250 DEG C, pressure be 0.8～0.95 standard atmospheric pressure;
(3) be cooled to normal temperature collection powder;
(4) screening, through routine be packaged into bag for subsequent use or for sale.
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)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110385505.0A Division CN103128298B (en) | 2011-11-28 | 2011-11-28 | A kind of production method of metal dust |
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| Publication Number | Publication Date |
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| CN105583405A true CN105583405A (en) | 2016-05-18 |
| CN105583405B 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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| 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 |
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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 |
|---|---|
| CN105583405B (en) | 2018-04-06 |
| CN105583404A (en) | 2016-05-18 |
| CN105583404B (en) | 2018-05-08 |
| CN103128298A (en) | 2013-06-05 |
| CN103128298B (en) | 2016-02-10 |
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