CN105728736B - A kind of preparation method of anti-oxidation glass putty - Google Patents
A kind of preparation method of anti-oxidation glass putty Download PDFInfo
- Publication number
- CN105728736B CN105728736B CN201610272558.4A CN201610272558A CN105728736B CN 105728736 B CN105728736 B CN 105728736B CN 201610272558 A CN201610272558 A CN 201610272558A CN 105728736 B CN105728736 B CN 105728736B
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- CN
- China
- Prior art keywords
- additive
- atomization
- metal
- oxidation
- metallic tin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- B22F2009/0848—Melting process before atomisation
Abstract
A kind of preparation method of anti-oxidation 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 the preparation of metal dust, and in particular to a kind of preparation method of anti-oxidation glass putty.
Background technology
Because the metallic tin powder exposure of current atomization production is oxidizable rotten in atmosphere, therefore vacuum packaging is used,
But, there is problems with the product produced under existing production technology situation：1st, easily there is various gas leakage in vacuum packaging
Situation, cause the oxidation of powder；2nd, it is vacuum-packed because external and internal pressure is poor, tin powder and tin powder are easy to lump；3rd, aoxidize
The substantial amounts of cost of increase is re-worked with the powder of caking, while the volatilization of powder and is flown upward, and is caused metal loss, is volatilized and fly upward
It 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 preparation method of anti-oxidation metallic tin powder；This method technique is simple, is easy to
Control, security are good.
The purpose of the present invention is achieved by the following technical solution：
A kind of preparation method of anti-oxidation glass putty, including the step such as metal molten, atomization, it is characterised in that：Metal molten
The temperature control of process soldering tin adds BTA additive, it adds at 295~310 DEG C in the atomization process
Enter the 0.005%~0.008% of the metal tin liquor weight that amount is accounted for after fusing, the pressure-air throughput control that atomization process is passed through
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 preparation method of anti-oxidation glass putty, including the step such as metal molten, atomization, it is characterised in that：
In the atomization process add BTA additive, its addition account for fusing after molten metal weight 0.006%~
0.007%, 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 0.6~0.7Mpa, 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；Security of system is good, easy in whole production process
In control, while the metal dust product produced need to only use conventional packaging, and 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 preparation method of anti-oxidation 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 preparation method of anti-oxidation glass putty, it is characterised in that carry out in the steps below：
A dissolve in metal molten stove obtains metallic tin liquid stream, and the temperature control of soldering tin is at 300~310 DEG C；
The metallic tin liquid stream diameter added in b atomization process is in the .8mm of 2 .5~2；It is the .7Mpa of 0 .6~0, gas by pressure
Flow is the .2m of 7 .5~83/ min pressure-air, which is passed through in atomization plant, is atomized metallic tin liquid stream, while is passed through benzo three
Nitrogen azoles additive, the BTA additive addition account for 0 .006%~0 into the metal liquid stream weight of atomization plant
.007%, the addition temperature of the BTA additive be 264~275 DEG C, pressure be the normal atmosphere of 0 .8~0 .95
Pressure；
C are cooled to normal temperature collection powder；
D are sieved, are standby or for sale through being routinely packaged into bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610272558.4A CN105728736B (en) | 2011-11-28 | 2011-11-28 | A kind of preparation method of anti-oxidation glass putty |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110385490.8A CN103128296B (en) | 2011-11-28 | 2011-11-28 | A kind of production method of metallic tin powder |
| CN201610272558.4A CN105728736B (en) | 2011-11-28 | 2011-11-28 | A kind of preparation method of anti-oxidation glass putty |
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 |
|---|---|
| CN105728736A CN105728736A (en) | 2016-07-06 |
| CN105728736B true CN105728736B (en) | 2018-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610272558.4A Active CN105728736B (en) | 2011-11-28 | 2011-11-28 | A kind of preparation method of anti-oxidation glass putty |
Country Status (1)
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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
- 2011-11-28 CN CN201610272558.4A patent/CN105728736B/en active Active
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| CN105728736A (en) | 2016-07-06 |
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