CN103128299B - A kind of production method of the metallic tin powder being applicable to diamond tool - Google Patents
A kind of production method of the metallic tin powder being applicable to diamond tool Download PDFInfo
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- CN103128299B CN103128299B CN201110385593.4A CN201110385593A CN103128299B CN 103128299 B CN103128299 B CN 103128299B CN 201110385593 A CN201110385593 A CN 201110385593A CN 103128299 B CN103128299 B CN 103128299B
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Abstract
A kind of production method of the metallic tin powder being applicable to diamond tool, including the step such as metal molten, atomization, the temperature of metal molten process soldering tin controls at 350～370 DEG C, BTA additive is added in described atomization process, its addition accounts for 0.02%～0.07% of the metal tin liquor weight after fusing, and the pressure-air throughput that atomization process is passed through controls 8～9.2m3/min.The present invention is by selecting a kind of additive during producing metallic tin powder at atomization; utilize the character of additive self; the interaction of additive and metal and the favorable environment of atomization so that additive gasification forms one layer of anti-oxidation and the protective layer of caking on metallic tin powder surface；The glass putty product that application the inventive method produces, use routine packaging, metallic tin powder product oxidation deterioration rate can be effectively controlled 0.5%～4.5%, employing routine packaging production cost is effectively reduced, production system safety is good, and return of goods rate is considerably reduced, remarkable in economical benefits.
Description
Technical field
The present invention relates to the production method of a kind of metal dust, be specifically related to a kind of gold being applicable to diamond tool
Belong to the atomization production method of glass putty, belong to metallurgical technology field.
Background technology
The production of metal current glass putty uses gas atomization, and its basic production technology is: the first step, metal
Fusing, fusion temperature is higher 50 DEG C～100 DEG C than melting point metal；Second step, in atomization plant, utilizes
The pressure-air atomization metal liquid stream of 0.3MP～1.2MP, prepares in accordance with dimension, the powder of requirement；The
Three steps, cooling collection powder；4th step, cooled powder sieves；5th step, product is vacuum-packed.
The metallic tin powder produced due to current atomization exposes the most oxidizable rotten, therefore uses vacuum packet
Dress, but the product produced under existing production technology situation, there is problems in that 1, be vacuum-packed easily
Various gas leakage situations occurs, causes the oxidation of powder；2, it is vacuum-packed owing to external and internal pressure is poor, tin powder
It is easy to caking with tin powder；3, aoxidize and the powder that lumps re-works increase substantial amounts of cost, simultaneously powder
Volatilization and fly upward, cause metal loss, volatilizing and flying upward is also easy to cause heavy metal poisoning.
Summary of the invention
It is an object of the invention to provide the production method of a kind of metallic tin powder being applicable to diamond tool, the party
The metallic tin powder antioxygenic property that method prepares is good, be appropriate to conventional packaging, avoids vacuum packaging caking simultaneously
Problem；The method technique is simple, easily controllable, safety is good.
It is an object of the invention to be achieved through the following technical solutions:
A kind of production method of the metallic tin powder being applicable to diamond tool, including the step such as metal molten, atomization,
It is characterized in that: the temperature of metal molten process soldering tin controls, at 350～370 DEG C, to be atomized described
In journey add BTA additive, its addition account for the metal tin liquor weight after fusing 0.02%～
0.07%, the pressure-air throughput that atomization process is passed through controls 8～9.2m3/min.The method prepare-320
Mesh level metallic tin powder, is applied to diamond tool field.
Above-mentioned BTA additive, its molecular formula: C6H5N3, outward appearance is Huang white, micro-or micro-red
Color acicular crystal, molecular weight 119.0, boiling point: 204 DEG C (pressure 2KPa), fusing point: 100 DEG C,
For commercially available prod.
Inventor uses atomization production application in the research and development of-320 mesh level metallic tin powder in diamond tool field
During, have selected multiple additives and prevent the oxidation of metal dust product, but or the metal dust prepared produces
Product occur the product of oxidation to be at least up to more than 45% after using routine packaging, it is impossible to popularization, product antioxidant effect
Undesirable do not reach industrial requirement；Safety issue, the bad control of whole production process occur.
Inventor has done substantial amounts of experimentation, have finally chosen BTA additive and adds in atomization process
Adding, the addition of BTA is worthy of careful study the most very much simultaneously, controls to make to produce in the amount ranges of the present invention
The oxidation resistance of good, the most final metal dust product of the safety of journey is good, and ultimogenitary metal dust produces
Product use routine packaging, and its oxidation deterioration rate is only 3～about 4.5%.
In order to improve the oxidation resistance of prepared metallic tin powder product further, above-mentioned BTA additive
Addition temperature be 210～283 DEG C, pressure be 0.8～0.95 normal atmosphere；The metal produced can be made
Powder-product uses routine packaging, and its oxidation deterioration rate is only 2.5～about 2.8%.
It is highly preferred that in order to improve security performance and the oxidation resistance of metallic tin powder product, above-mentioned benzene further
And the addition temperature of triazole additive is 250～275 DEG C, metal liquid stream atomization process is passed through pressure-air
Pressure be 0.65～0.9Mpa, the temperature of metal molten process soldering tin controls at 355～363 DEG C；Raw
The metal dust product produced uses routine packaging, and its oxidation deterioration rate is only 1.8～about 2.3%.
Specifically, the production method of a kind of metallic tin powder, including the step such as metal molten, atomization, its feature
It is: adding BTA additive in described atomization process, its addition accounts for the molten metal weight after fusing
The 0.035%～0.05% of amount, the addition temperature of described BTA additive is 250～275 DEG C, pressure is
0.8～0.95 normal atmosphere, metal liquid stream atomization process is passed through the pressure of pressure-air be 0.7～
0.8Mpa, high pressure gas flow are 8.0～9.2m3/ min, the temperature of metal molten process soldering tin controls
355～363 DEG C；In whole production process, security of system is good, easily controllable, and the metal dust simultaneously produced produces
Product only need to use conventional packaging, and its oxidation deterioration rate is only 0.5～about 1.2%.
The present invention has a following beneficial effect:
The present invention, by selecting a kind of additive during producing metallic tin powder at atomization, utilizes additive self
Character, the interaction of additive and metallic tin and the favorable environment of atomization so that additive gasifies at stannum
Powder surface forms one layer of anti-oxidation and the protective layer of caking；By production practices, application the inventive method produces
-180 mesh level metallic tin powder be mainly used in friction material field, such as: motorcycle/automobile brake sheet, machinery
Rotate antifriction position etc., use routine packaging, decrease more than 98% because of the return of goods aoxidized and caking occurs,
Metallic tin powder product oxidation deterioration rate can be effectively controlled 0.5%～4.5%, uses routine packaging production cost to obtain
To being effectively reduced, production system safety good, return of goods rate is considerably reduced, remarkable in economical benefits, simultaneously
The working environment of employee is improved, physical and mental health is guaranteed.
Detailed description of the invention
Below by embodiment, the present invention is specifically described, it is necessary to it is pointed out here that be following example
It is served only for the present invention is further described, it is impossible to be interpreted as limiting the scope of the invention, this field
Person skilled in the art according to the invention described above content, the present invention can be made some nonessential improvement and tune
Whole.
Embodiment 1
The production method of a kind of metallic tin powder, is carried out in the steps below:
A. dissolving in metal molten stove and obtain metallic tin liquid stream, the temperature of soldering tin controls 355～363
℃；
B. the metallic tin liquid stream diameter added in atomization process is 1.8～2.3mm；By pressure be 0.7～
0.8Mpa, throughput are 8.0～9.2m3The pressure-air of/min is passed through metallic tin in atomization plant
Liquid stream is atomized, and is passed through BTA additive, described BTA additive addition simultaneously
Accounting for the 0.035%～0.05% of the metal liquid stream weight entering atomization plant, described BTA adds
The addition temperature of agent is 264～275 DEG C, pressure is 0.8～0.95 normal atmosphere；
C. room temperature collection powder it is cooled to；
D. screening, to be packaged into bag through routine standby or for sale.
In said method production process, safety is good；The metallic tin powder oxidation deterioration rate prepared is only 0.5～1.2%,
There's almost no post sales the return of goods, conventional packaging, remarkable in economical benefits.
Embodiment 2～6: according to the following steps and technique produce metal dust, remaining is with embodiment 1.
The metallic tin powder oxidation deterioration rate that said method prepares is only 1.5～4.5%, and routine is packed, remarkable in economical benefits；
In preparation process, safety is good.
Claims (1)
1. the production method of the metallic tin powder being applicable to diamond tool, including metal molten, atomization steps, it is characterized in that: in described atomization process, add BTA additive, its addition accounts for 0.035%～0.05% of the metal tin liquor weight after fusing, the addition temperature of described BTA additive is 250～275 DEG C, pressure is 0.8～0.95 normal atmosphere, and the pressure being passed through pressure-air in metal liquid stream atomization process is 0.7～0.8Mpa, high pressure gas flow is 8.0～9.2 m3/ min, the temperature of metal molten process soldering tin controls at 355～363 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110385593.4A CN103128299B (en) | 2011-11-28 | 2011-11-28 | A kind of production method of the metallic tin powder being applicable to diamond tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110385593.4A CN103128299B (en) | 2011-11-28 | 2011-11-28 | A kind of production method of the metallic tin powder being applicable to diamond tool |
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| CN103128299A CN103128299A (en) | 2013-06-05 |
| CN103128299B true CN103128299B (en) | 2016-08-24 |
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| CN201110385593.4A Active CN103128299B (en) | 2011-11-28 | 2011-11-28 | A kind of production method of the metallic tin powder being applicable to diamond tool |
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Citations (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 |
| 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 |
| 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 CN201110385593.4A patent/CN103128299B/en active Active
Patent Citations (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 |
| 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 |
| 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 |
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| CN103128299A (en) | 2013-06-05 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Chen Lin Inventor after: Wu Wei Inventor after: Mo Zhengbin Inventor before: Zeng Mingjun Inventor before: Wang Xuqi Inventor before: Liu Qiang |
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Effective date of registration: 20160719 Address after: 401431 Sanjiang street, Qijiang District, Chongqing Applicant after: Chongqing You Yanchongye novel material company limited Address before: 401431 Sanjiang street, Qijiang, Chongqing Applicant before: Chongqing Smeltted Co., Ltd. |
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