CN105855557B - A kind of metallic tin powder production method for friction material - Google Patents
A kind of metallic tin powder production method for friction material Download PDFInfo
- Publication number
- CN105855557B CN105855557B CN201610273255.4A CN201610273255A CN105855557B CN 105855557 B CN105855557 B CN 105855557B CN 201610273255 A CN201610273255 A CN 201610273255A CN 105855557 B CN105855557 B CN 105855557B
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- Prior art keywords
- metallic tin
- additive
- atomization
- metal
- tin powder
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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
Abstract
A kind of metallic tin powder production method for friction material, including metal molten, atomization and etc., the temperature of metal molten process soldering tin is controlled at 295~310 DEG C, benzotriazole additive is added in the atomization process, its addition accounts for 0.005%~0.008% of the metal tin liquor weight after fusing, and the pressure-air throughput that atomization process is passed through is controlled in about 7~8.2m3/min.The present invention during atomization produces metallic tin powder 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 one layer on metallic tin powder surface prevents the protective layer for aoxidizing and luming；The glass putty product produced using the method for the present invention, it can be effectively controlled 0.8%~3.5% using conventional packaging, metallic tin powder product oxidation deterioration rate, be effectively reduced using conventional packaging production cost, production system safety 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 methods of metal powder, and in particular to a kind of metal suitable for friction material field
The production method of glass putty, belongs to metallurgical technology field.
Background technology
The production of metallic tin powder uses gas atomization, and basic production technology is：The first step, the fusing of metal are melted
It is 50 DEG C~100 DEG C higher than melting point metal to change temperature；Second step utilizes the pressure-air of 0.3MP~1.2MP in atomization plant
Atomization metal liquid stream is made in accordance with dimension, the powder of requirement；Third walks, cooling collection powder；4th step, through cooling powder
It is sieved；5th step, product vacuum packaging.Since the metallic tin powder of current atomization production exposes oxidizable change in air
Matter, therefore vacuum packaging is used, but the product produced under existing production technology situation, it has the following problems：1, vacuum packet
Dress is susceptible to various gas leakage situations, causes the oxidation of powder；2, it is vacuum-packed since external and internal pressure is poor, tin powder and glass putty
End is easy to lump；3, the powder for aoxidizing and luming, which re-works, increases a large amount of cost, while the volatilization of powder and flying upward, and causes
Metal loss, volatilizing and flying upward is also easy to cause heavy metal poisoning.
Invention content
It is golden made from this method the purpose of the present invention is to provide a kind of metallic tin powder production method for friction material
Category glass putty antioxygenic property is good, is appropriate for conventional packaging, while avoiding the problem of vacuum packaging is lumpd；This method technique letter
It is single, easily controllable, safety is good.
The purpose of the present invention is what is be achieved through the following technical solutions：
A kind of metallic tin powder production method for friction material, including metal molten, atomization and etc., feature exists
In：The temperature of metal molten process soldering tin is controlled at 295~310 DEG C, and benzotriazole is added in the atomization process
Additive, addition account for 0.005%~0.008% of the metal tin liquor weight after fusing, and the high pressure that atomization process is passed through is empty
Gas throughput is controlled in 7~8.2m3/min.- 180 mesh grade metallic tin powders made from this method are applied to friction material field.
Above-mentioned benzotriazole additive, molecular formula：C6H5N3, 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 commercial product.
| Index name | Index |
| Purity | >=99.8% |
| Coloration | ≤ 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 grade metallic tin powders of friction material field,
Multiple additives have been selected to prevent the oxidation of metal powder product, or but after the conventional packaging of metal powder product obtained use
The product aoxidized is at least up to 45% or more, can not promote, product antioxidant effect is undesirable that industrial want is not achieved
It asks；There is safety issue, the bad control of entire production process.Inventor has done a large amount of experimental study, final choice
Benzotriazole additive simultaneously adds in atomization process, while the addition of benzotriazole is also worthy of careful study very much, and control exists
The amount ranges of the present invention make the safety of production process good while the oxidation resistance of final metal powder product is good, most
The metal powder product produced afterwards is packed using conventional, and oxidation deterioration rate is only 2.7~3.5% or so.
In order to further increase the oxidation resistance of metallic tin powder product obtained, above-mentioned benzotriazole additive adds
Enter that temperature is 210~283 DEG C, pressure is 0.8~0.95 standard atmospheric pressure；It may make the metal powder product of production using normal
Rule packaging, oxidation deterioration rate is only 2.0~2.5% or so.
It is highly preferred that in order to further improve the security can and metallic tin powder product oxidation resistance, above-mentioned benzo three
The addition temperature of nitrogen azoles additive is 250~275 DEG C, the pressure that pressure-air is passed through in metal liquid stream atomization process is 0.5~
The temperature of 0.7Mpa, metal molten process soldering tin are controlled at 300~310 DEG C；The metal powder product of production is using conventional
Packaging, oxidation deterioration rate is only 1.5~2% or so.
Specifically, a kind of metallic tin powder production method for friction material, including metal molten, atomization,
It is characterized in that：Benzotriazole additive is added in the atomization process, addition accounts for the molten metal weight after fusing
0.006%~0.007%, the addition temperature of the benzotriazole additive is 250~275 DEG C, pressure is 0.8~0.95
A standard atmospheric pressure, is passed through that the pressure of pressure-air is 0.6~0.7Mpa, high pressure gas flow is in metal liquid stream atomization process
7.5~8.2m3The temperature of/min, metal molten process soldering tin are controlled at 300~310 DEG C；System in entire production process
Safety is good, easily controllable, while the metal powder product produced need to only use conventional packaging, and oxidation deterioration rate is only 0.8
~1.5% or so.
The present invention has following advantageous effect：
The present invention utilizes the property of additive itself by selecting a kind of additive during atomization produces metallic tin powder
The favorable environment of interaction and the atomization of matter, additive and metallic tin so that additive gasification forms one on glass putty surface
Layer prevents the protective layer for aoxidizing and luming；By production practices, -180 mesh grade metallic tin powder masters produced using the method for the present invention
To be applied to friction material field, such as：Antifriction position of motorcycle/automotive brake pads, mechanical rotation etc., using it is conventional packaging,
Because the return of goods that oxidation and caking occur reduce 98% or more, 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 safety it is good, return of goods rate is significantly
To reduction, the working environment of remarkable in economical benefits, while employee are improved, physical and mental health is guaranteed.
Specific implementation mode
The present invention is specifically described below by embodiment, it is necessary to which indicated herein is that following embodiment is only used
In invention is further explained, it should not be understood 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 aforementioned present invention content to the present invention.
Embodiment 1
A kind of metallic tin powder production method for friction material carries out in the steps below：
A. dissolving obtains metallic tin liquid stream in metal molten stove, and the temperature of soldering tin is controlled at 300~310 DEG C；
B. the metallic tin liquid stream diameter being added in atomization process is in 2.5~2.8mm；It is 0.6~0.7Mpa, air-flow by pressure
Amount is 7.5~8.2m3The pressure-air of/min, which is passed through in atomization plant, is atomized metallic tin liquid stream, while being passed through benzotriazole
Additive, the benzotriazole additive addition accounts for 0.006% into the metal liquid stream weight of atomization plant~
0.007%, the addition temperature of the benzotriazole additive is 264~275 DEG C, pressure is 0.8~0.95 normal atmosphere
Pressure；
C. it is cooled to room temperature collection powder；
D. it sieves, is spare or for sale through being routinely packaged into bag.
Safety is good in above method production process；Metallic tin powder oxidation deterioration rate obtained is only 0.8~1.5%, pin
It there's almost no the return of goods after sale, conventional to pack, remarkable in economical benefits.
Embodiment 2~6：According to the following steps and technique productions metal powder, 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 to pack, remarkable in economical benefits；
Safety is good in preparation process.
Claims (1)
1. a kind of metallic tin powder production method for friction material, which is characterized in that carry out in the steps below：
A. it is melted in metal molten stove and obtains metallic tin liquid stream, the temperature of soldering tin is controlled at 305 DEG C；
B. the metallic tin liquid stream diameter being added in atomization process is in 2.6mm；It is 0.7Mpa by pressure, throughput 8.2m3/ min's
Pressure-air, which is passed through in atomization plant, is atomized metallic tin liquid stream, while being passed through benzotriazole additive, three nitrogen of the benzo
Azoles additive addition accounts for 0.0055% into the metal liquid stream weight of atomization plant, and the benzotriazole additive adds
Enter that temperature is 223 DEG C, pressure is 0.8~0.95 standard atmospheric pressure；
C. it is cooled to room temperature collection powder；
D. it sieves, is spare or for sale through being routinely packaged into bag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610273255.4A CN105855557B (en) | 2011-11-28 | 2011-11-28 | A kind of metallic tin powder production method for friction material |
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 |
| CN201610273255.4A CN105855557B (en) | 2011-11-28 | 2011-11-28 | A kind of metallic tin powder production method for friction material |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201110385490.8A Division CN103128296B (en) | 2011-11-28 | 2011-11-28 | A kind of production method of metallic tin powder |
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| CN105855557A CN105855557A (en) | 2016-08-17 |
| CN105855557B true CN105855557B (en) | 2018-07-27 |
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| CN201110385490.8A Active CN103128296B (en) | 2011-11-28 | 2011-11-28 | A kind of production method of metallic tin powder |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108889956B (en) * | 2018-06-09 | 2021-06-01 | 赣州白塔金属材料有限公司 | Processing technology of high-strength tin powder |
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 |
| CN101139716A (en) * | 2007-10-25 | 2008-03-12 | 金川集团有限公司 | Method for preventing oxidization of copper powder |
| CN101323019A (en) * | 2008-07-18 | 2008-12-17 | 湖北犇星化工有限责任公司 | Method for manufacturing tin powder for organotin production |
| CN101362206A (en) * | 2008-10-09 | 2009-02-11 | 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 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1356189A (en) * | 2000-12-02 | 2002-07-03 | 王有林 | Antioxidizing agent for metal powder |
| CN1201889C (en) * | 2003-05-21 | 2005-05-18 | 昆明理工恒达科技有限公司 | Production method of scale shpared zinc powler |
| US7211204B2 (en) * | 2003-12-12 | 2007-05-01 | Electrochemicals, Inc. | Additives to stop copper attack by alkaline etching agents such as ammonia and monoethanol amine (MEA) |
-
2011
- 2011-11-28 CN CN201610273255.4A patent/CN105855557B/en active Active
- 2011-11-28 CN CN201110385490.8A patent/CN103128296B/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 |
| CN101139716A (en) * | 2007-10-25 | 2008-03-12 | 金川集团有限公司 | Method for preventing oxidization of copper powder |
| CN101323019A (en) * | 2008-07-18 | 2008-12-17 | 湖北犇星化工有限责任公司 | Method for manufacturing tin powder for organotin production |
| CN101362206A (en) * | 2008-10-09 | 2009-02-11 | 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103128296B (en) | 2016-05-11 |
| CN103128296A (en) | 2013-06-05 |
| CN105855557A (en) | 2016-08-17 |
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