CN105689729B - A kind of atomization production method of high-quality glass putty - Google Patents
A kind of atomization production method of high-quality glass putty Download PDFInfo
- Publication number
- CN105689729B CN105689729B CN201610272165.3A CN201610272165A CN105689729B CN 105689729 B CN105689729 B CN 105689729B CN 201610272165 A CN201610272165 A CN 201610272165A CN 105689729 B CN105689729 B CN 105689729B
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- CN
- China
- Prior art keywords
- atomization
- additive
- metal
- metallic tin
- pressure
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Classifications
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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
- 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
- B22F2009/0824—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 with a specific atomising 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
- 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
- B22F2009/0848—Melting process before atomisation
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- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Powder Metallurgy (AREA)
Abstract
A kind of atomization production method of high-quality glass putty, including steps such as metal molten, atomizations, the temperature control of metal molten process soldering tin is at 295~310 DEG C, BTA additive is added in the atomization process, the 0.005%~0.008% of the metal tin liquor weight that its addition is accounted for after fusing, the pressure-air throughput that atomization process is passed through are controlled in about 7~8.2m3/min.The present invention during producing metallic tin powder 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 on metallic tin powder surface；The glass putty product produced using the inventive method, 0.8%~3.5% can be effectively controlled using conventional packaging, metallic tin powder product oxidation deterioration rate, 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.
Description
The present patent application is for application number 201110385490.8, the patent of invention on 28 days November 2011 applying date
Divisional application.
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 glass putty.
Background technology
The production of metallic tin powder at present uses gas atomization, and its basic production technology is：The first step, metal melt
Change, fusion temperature is higher than melting point metal 50 DEG C~100 DEG C；Second step, in atomization plant, utilize 0.3MP~1.2MP high pressure
Air atomizing metal liquid stream, it is made in accordance with dimension, desired powder；3rd step, cooling collection powder；4th step, through cooling
Powder is sieved；5th step, product vacuum packaging.Because the metallic tin powder of current atomization production exposes easy oxygen in atmosphere
Change and go bad, therefore use vacuum packaging, but the product produced under existing production technology situation, problems be present：1st, it is true
Easily there is various gas leakage situations in empty package, causes the oxidation of powder；2nd, vacuum packaging due to external and internal pressure it is poor, tin powder and
Tin powder is easy to lump；3rd, the powder for aoxidizing and luming re-works the substantial amounts of cost of increase, while the volatilization of powder and flies upward,
Metal loss is caused, volatilizing and flying upward is also easy to cause heavy metal poisoning.
The content of the invention
It is an object of the invention to provide a kind of atomization production method of high-quality glass putty, metallic tin powder made from this method
Antioxygenic property is good, is appropriate for conventional packaging, while avoids the problem of vacuum packaging is lumpd；This method technique is simple, easy
It is good in control, security.
The purpose of the present invention is achieved by the following technical solution：
A kind of atomization production method of high-quality glass putty, including the step such as metal molten, atomization, it is characterised in that：Metal
The temperature control of fusion process soldering tin adds BTA additive at 295~310 DEG C in the atomization process,
The 0.005%~0.008% of the metal tin liquor weight that its addition is accounted for after fusing, the pressure-air throughput that atomization process is passed through
Control is in 7~8.2m3/min.- 180 mesh level metallic tin powders made from this method, applied to friction material field.
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 uses atomization production application in the R＆D process of -180 mesh level metallic tin powders of friction material field,
Have selected multiple additives prevents the oxidation of metal dust product, or but after the conventional packaging of obtained metal dust product use
The product aoxidized is at least up to more than 45%, can not promote, product antioxidant effect it is undesirable do not reach it is industrial will
Ask；There is safety issue, the bad control of whole production process.Inventor has done substantial amounts of experimental study, final choice
BTA additive simultaneously adds in atomization process, while the addition of BTA is also worthy of careful study very much, control
The amount ranges of the present invention cause the security of production process good while the oxidation resistance of final metal dust product is good, most
The metal dust product produced afterwards is packed using conventional, and its oxidation deterioration rate is only 2.7~3.5% or so.
In order to further improve the oxidation resistance of obtained metallic tin powder 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 2.0~2.5% or so.
It is highly preferred that in order to further improve the oxidation resistance of security performance and metallic tin powder 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 0.5~
0.7Mpa, the temperature control of metal molten process soldering tin is at 300~310 DEG C；The metal dust product of production is using conventional
Packaging, its oxidation deterioration rate is only 1.5~2% or so.
Specifically, a kind of atomization production method of high-quality glass putty, including the step such as metal molten, atomization, its feature
It is：BTA additive is added in the atomization process, the molten metal weight that its addition is accounted for after fusing
0.006%~0.007%, the addition temperature of the BTA additive is 250~275 DEG C, pressure is 0.8~0.95
Standard atmospheric pressure, the pressure that pressure-air is passed through in metal liquid stream atomization process is 0.6~0.7Mpa, high pressure gas flow is 7.5
~8.2m3/ min, the temperature control of metal molten process soldering tin is at 300~310 DEG C；System safety in whole production process
Property it is good, easily controllable, while the metal dust product produced need to only use conventional packaging, its oxidation deterioration rate is only 0.8~
1.5% or so.
The present invention has following beneficial effect：
The present invention utilizes the property of additive itself by selecting a kind of additive during producing metallic tin powder in atomization
The favorable environment of interaction and the atomization of matter, additive and metallic tin so that additive gasification forms one on glass putty surface
The protective layer of the anti-oxidation of layer and caking；By production practices, -180 mesh level metallic tin powder masters produced using the inventive method
To be applied to friction material field, such as：Antifriction position of motorcycle/automobile brake sheet, mechanical rotation etc., using it is conventional packaging,
Because the return of goods that oxidation and caking occur reduce more than 98%, metallic tin powder product oxidation deterioration rate can be effectively controlled
0.8%~3.5%, be effectively reduced using conventional packaging production cost, production system security it is good, return of goods rate is significantly
To reduction, the working environment of remarkable in economical benefits, while employee is improved, physical and mental health 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 atomization production method of high-quality glass putty, is carried out in the steps below：
A. dissolving obtains metallic tin liquid stream in metal molten stove, and the temperature control of soldering tin is at 300~310 DEG C；
B. the metallic tin liquid stream diameter added in atomization process is in 2.5~2.8mm；It is 0.6~0.7Mpa, air-flow by pressure
Measure as 7.5~8.2m3/ min pressure-air, which is passed through in atomization plant, is atomized metallic tin liquid stream, while is passed through BTA
Additive, the BTA additive addition accounts for 0.006% into the metal liquid stream weight of atomization plant~
0.007%, the addition temperature of the BTA additive is 264~275 DEG C, pressure is 0.8~0.95 normal atmosphere
Pressure；
C. it is cooled to normal temperature collection powder；
D. sieve, be standby or for sale through being routinely packaged into bag.
Security is good in above method production process；Obtained metallic tin powder oxidation deterioration rate is only 0.8~1.5%, 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.
Metallic tin powder oxidation deterioration rate is only 1.0~3.5% made from the above method, conventional packaging, remarkable in economical benefits；
Security is good in preparation process.
Claims (1)
1. a kind of atomization production method of high-quality glass putty, it is characterised in that carry out in the steps below：
A. dissolving obtains metallic tin liquid stream in metal molten stove, and the temperature control of soldering tin is at 310 DEG C；
B. the metallic tin liquid stream diameter added in atomization process is in 2.7mm；It is 0.65Mpa by pressure, throughput 7.2m3/min
Pressure-air be passed through in atomization plant and be atomized metallic tin liquid stream, while be passed through BTA additive, the benzo three
Nitrogen azoles additive addition accounts for 0.0075% or so into the metal liquid stream weight of atomization plant, the BTA addition
The addition temperature of agent is 285 DEG C or so, pressure is 0.8~0.95 standard atmospheric pressure；
C. it is cooled to normal temperature collection powder；
D. sieve, be standby or for sale through being routinely packaged into bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610272165.3A CN105689729B (en) | 2011-11-28 | 2011-11-28 | A kind of atomization production method of high-quality glass putty |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610272165.3A CN105689729B (en) | 2011-11-28 | 2011-11-28 | A kind of atomization production method of high-quality glass putty |
| CN201110385490.8A CN103128296B (en) | 2011-11-28 | 2011-11-28 | A kind of production method of metallic tin powder |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110385490.8A Division CN103128296B (en) | 2011-11-28 | 2011-11-28 | A kind of production method of metallic tin powder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105689729A CN105689729A (en) | 2016-06-22 |
| CN105689729B true CN105689729B (en) | 2018-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610272165.3A Active CN105689729B (en) | 2011-11-28 | 2011-11-28 | A kind of atomization production method of high-quality glass putty |
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Family Cites Families (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 |
| CN101139716A (en) * | 2007-10-25 | 2008-03-12 | 金川集团有限公司 | Method for preventing oxidization of copper powder |
| CN101362206B (en) * | 2008-10-09 | 2011-03-23 | 陈新国 | Preparation method of continuous high quality soldering powder |
| 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 |
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- 2011-11-28 CN CN201610272165.3A patent/CN105689729B/en active Active
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| CN105689729A (en) | 2016-06-22 |
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