CN108941564B - Method for manufacturing metal molecular screen - Google Patents
Method for manufacturing metal molecular screen Download PDFInfo
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- CN108941564B CN108941564B CN201810987857.5A CN201810987857A CN108941564B CN 108941564 B CN108941564 B CN 108941564B CN 201810987857 A CN201810987857 A CN 201810987857A CN 108941564 B CN108941564 B CN 108941564B
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- molecular sieve
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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
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/10—Filter screens essentially made of metal
- B01D39/12—Filter screens essentially made of metal of wire gauze; of knitted wire; of expanded metal
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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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/11—Making porous workpieces or articles
- B22F3/1121—Making porous workpieces or articles by using decomposable, meltable or sublimatable fillers
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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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
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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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
- B22F2003/241—Chemical after-treatment on the surface
- B22F2003/242—Coating
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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
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Powder Metallurgy (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses a method for manufacturing a metal molecular sieve, which comprises the steps of mixing a plurality of aluminum powder, iron powder, carbon powder, plasticizer, alloy reinforcing elements, paraffin powder and copper powder to form a mixed substance, uniformly covering the mixed substance on the surface of a reticular fiber strip, putting the reticular fiber strip into a rotary furnace for sintering operation to form a metal net, and after the metal net is formed, carrying out molecular sieve technical treatment on the metal net to combine the metal net with a molecular sieve to form the metal molecular sieve. The invention provides a method for manufacturing a metal molecular sieve, which is characterized in that after the metal molecular sieve is manufactured, the molecular sieve does not need to be directly thrown into liquid or gas for adsorption operation, so that the subsequent fishing operation is avoided, the labor intensity of an operator is reduced, and the cost consumption is reduced.
Description
Technical Field
The invention belongs to the technical field of molecular sieves, and particularly relates to a manufacturing method of a metal molecular sieve.
Background
Molecular sieves are materials containing precise and single microscopic pores that can be used to adsorb gases or liquids. Molecules small enough can be adsorbed through the pores while larger molecules cannot, unlike a conventional sieve, operate at the molecular level.
Powder metallurgy is a process technology for manufacturing metal or metal powder as a raw material, and manufacturing metal materials, composite materials and various types of products through forming and sintering operations, and at present, the powder metallurgy technology is widely applied to the fields of traffic, machinery, electronics, aerospace, weaponry, biology, new energy, information, nuclear industry and the like, and becomes one of the most active branches in new material science.
At present, the molecular sieve is generally used by directly throwing the molecular sieve into liquid or gas to perform adsorption operation, but the molecular sieve needs to be taken out after the adsorption operation is completed by using the method for adsorption, so that the labor intensity of an operator is increased, and the molecular sieve is difficult to take out due to extremely small particle size and needs to be taken out by adopting special equipment, so that the use cost is increased.
Disclosure of Invention
The invention overcomes the defects of the prior art and provides the manufacturing method of the metal molecular sieve, and after the metal molecular sieve is manufactured, the molecular sieve does not need to be directly thrown into liquid or gas for adsorption operation, so that the subsequent fishing operation is avoided, the labor intensity of an operator is reduced, and the cost consumption is reduced.
In order to achieve the purpose, the invention adopts the technical scheme that: a method for manufacturing a metal molecular screen comprises the following steps:
(1) and (3) material mixing operation, namely uniformly mixing the following substances: aluminum powder, iron powder, carbon powder, plasticizer, alloy reinforcing element, paraffin powder and copper powder are mixed to form a mixed substance;
(2) forming a net structure by using a plurality of fiber strips, and putting the net structure into the mixed substance to enable the mixed substance to uniformly cover the surfaces of the fiber strips;
(3) placing the reticular fiber strips coated with the mixed substances into a rotary furnace for sintering operation, forming a metal net after sintering, and cooling the metal net to room temperature;
(4) and (3) carrying out molecular sieve material treatment on the metal mesh to form a metal molecular sieve.
In a preferred embodiment of the present invention, in the step (1), the ratio of each substance is: 3-5% of aluminum powder, 10-15% of iron powder, 1-2% of carbon powder, 5% of plasticizer, 5-6% of alloy reinforcing element, 4% of paraffin powder and the balance of copper powder.
In a preferred embodiment of the present invention, in the step (1), the mixed material is a viscous liquid.
In a preferred embodiment of the present invention, in the step (2), the fiber strips are made of fiber material degradable at high temperature.
In a preferred embodiment of the present invention, before performing step (3), the following steps may be further performed: and (4) preheating the reticular fiber strips coated with the mixed substances to ensure that the mixed substances on the surfaces of the reticular fiber strips have certain hardness before the step (3).
In a preferred embodiment of the present invention, the temperature of the preheating treatment is 45 to 60 ℃.
In a preferred embodiment of the present invention, in the step (3), the temperature in the rotary furnace is 700 to 1000 ℃, and the sintering operation is performed for 1 to 1.5 hours.
In a preferred embodiment of the present invention, in the step (4), the metal mesh may be sprayed with a molecular sieve or put into a viscous liquid molecular sieve, so that the molecular sieve uniformly covers the surface of the metal mesh.
In a preferred embodiment of the present invention, in step (1), the alloy reinforcing element is a mixture of one or more of the following: zn, Co, Mn and Mo.
In a preferred embodiment of the present invention, the alloy reinforcing elements comprise the following elements in proportion: 15-30% of Zn, 10-20% of Co, 25-30% of Mn and the balance of Mo.
The invention solves the defects in the background technology, and has the following beneficial effects:
(1) the metal net is manufactured by adopting a powder metallurgy mode, and a porous or semi-compact structure can be formed after the powder metallurgy forming, so that the molecular sieve can enter pores of the metal net, the amount of the molecular sieve is increased, and the adsorption effect is enhanced;
(2) the plurality of fiber strips are used for forming a net-shaped structure, different net-shaped shapes can be formed, the universality of the invention is enhanced, and meanwhile, the fiber strips are high-temperature degradable pieces, so that the later sintering operation is not influenced;
(3) the use of alloy reinforcing elements enhances the hardness of the metal net after being formed;
(4) the molecular sieve is used for adsorbing gas or liquid, so that the adsorption effect is ensured.
Detailed Description
The present invention will now be described in further detail with reference to specific examples.
Example 1
A method for manufacturing a metal molecular screen comprises the following steps:
(1) and (3) material mixing operation, namely uniformly mixing the following substances: aluminum powder, iron powder, carbon powder, plasticizer, alloy reinforcing element, paraffin powder and copper powder are mixed to form a mixed substance;
(2) forming a net structure by using a plurality of fiber strips, and putting the net structure into the mixed substance to enable the mixed substance to uniformly cover the surfaces of the fiber strips;
(3) placing the reticular fiber strips coated with the mixed substances into a rotary furnace for sintering operation, forming a metal net after sintering, and cooling the metal net to room temperature;
(4) and (3) carrying out molecular sieve material treatment on the metal mesh to form a metal molecular sieve.
Wherein: in the step (2), the fiber strips are high-temperature degradable fiber pieces, so that the fiber strips do not influence the forming of the metal net when the next sintering operation is carried out, and the fiber strips can form different net structures, so that the metal nets in different shapes can be finally formed, and the universality of the invention is enhanced.
In summary, the molecular sieve is used for adsorbing gas or liquid, the metal mesh is manufactured in a powder metallurgy mode while the adsorption effect is ensured, and a porous or semi-compact structure is formed after powder metallurgy forming, so that the molecular sieve can enter pores of the metal mesh, the amount of the molecular sieve is increased, and the adsorption effect is enhanced.
Example 2
A method for manufacturing a metal molecular screen comprises the following steps:
(1) and (3) material mixing operation, namely uniformly mixing the following substances: 3% of aluminum powder, 10% of iron powder, 1% of carbon powder, 5% of plasticizer, 5% of alloy reinforcing element, 4% of paraffin powder and the balance of copper powder, and mixing to form a mixed substance;
(2) forming a net structure by using a plurality of high-temperature degradable fiber strips, and putting the net structure into the mixed substance to uniformly cover the surface of the fiber strips with the mixed substance;
(3) placing the reticular fiber strips coated with the mixed substances into a rotary furnace for sintering operation, keeping the temperature in the rotary furnace at 700 ℃, performing sintering operation for 1h, forming a metal net after sintering, and cooling the metal net to room temperature;
(4) and (3) carrying out molecular sieve material treatment on the metal mesh to form a metal molecular sieve.
Wherein:
the plasticizer used in the step (1) can make the mixed substance in a viscous liquid state at normal temperature, so that the mixed substance can be conveniently covered on the surface of the fiber strip.
The alloy reinforcing elements in the step (1) are mixed according to the following proportion: 15% of Zn, 10% of Co, 25% of Mn and the balance of Mo, and the use of alloy reinforcing elements enhances the hardness of the formed metal mesh.
Before the step (3), the reticular fiber strips coated with the mixed substances can be subjected to preheating treatment, the temperature of the preheating treatment is 45 ℃, and the preheating treatment can ensure that the mixed substances on the surfaces of the reticular fiber strips have certain hardness before the step (3) is carried out, so that the mixed substances are prevented from falling off from the reticular fiber strips.
In the step (4), the molecular sieve can be adopted for spraying or the metal mesh is put into a viscous liquid molecular sieve, so that the molecular sieve uniformly covers the surface of the metal mesh, and the metal molecular sieve is formed after drying.
In summary, the molecular sieve is used for adsorbing gas or liquid, the metal mesh is manufactured in a powder metallurgy mode while the adsorption effect is ensured, and a porous or semi-compact structure is formed after powder metallurgy forming, so that the molecular sieve can enter pores of the metal mesh, the amount of the molecular sieve is increased, and the adsorption effect is enhanced.
In light of the foregoing description of the preferred embodiment of the present invention, it is to be understood that various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (5)
1. A method for manufacturing a metal molecular screen is characterized by comprising the following steps: the method comprises the following steps:
(1) and (3) material mixing operation, namely uniformly mixing the following substances: aluminum powder, iron powder, carbon powder, plasticizer, alloy reinforcing element, paraffin powder and copper powder are mixed to form a mixed substance;
(2) forming a net structure by using a plurality of fiber strips, and putting the net structure into the mixed substance to enable the mixed substance to uniformly cover the surfaces of the fiber strips;
(3) placing the reticular fiber strips coated with the mixed substances into a rotary furnace for sintering operation, forming a metal net after sintering, and cooling the metal net to room temperature;
(4) carrying out molecular sieve material treatment on the metal net to form a metal molecular sieve;
in the step (2), the fiber strips are high-temperature degradable fiber material pieces;
in the step (1), the mixed substance is a viscous liquid;
in the step (4), a molecular sieve is adopted for spraying or the metal net is put into a viscous liquid molecular sieve, so that the molecular sieve uniformly covers the surface of the metal net;
in the step (1), the mixture ratio of each substance is as follows: 3-5% of aluminum powder, 10-15% of iron powder, 1-2% of carbon powder, 5% of plasticizer, 5-6% of alloy reinforcing element, 4% of paraffin powder and the balance of copper powder;
in the step (1), the alloy reinforcing element is a mixture of one or more of the following elements: zn, Co, Mn and Mo.
2. The method of claim 1, wherein the step of forming the metal molecular sieve comprises: before the step (3), the following steps are also carried out: and (4) preheating the reticular fiber strips coated with the mixed substances to ensure that the mixed substances on the surfaces of the reticular fiber strips have certain hardness before the step (3).
3. The method of claim 2, wherein the step of forming the metal molecular sieve comprises: the treatment temperature of the preheating treatment is 45-60 ℃.
4. The method of claim 1, wherein the step of forming the metal molecular sieve comprises: in the step (3), the temperature in the rotary furnace is 700-1000 ℃, and the time for carrying out the sintering operation is 1-1.5 h.
5. The method of claim 1, wherein the step of forming the metal molecular sieve comprises: the alloy reinforcing elements comprise the following elements in proportion: 15-30% of Zn, 10-20% of Co, 25-30% of Mn and the balance of Mo.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810987857.5A CN108941564B (en) | 2018-08-28 | 2018-08-28 | Method for manufacturing metal molecular screen |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810987857.5A CN108941564B (en) | 2018-08-28 | 2018-08-28 | Method for manufacturing metal molecular screen |
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| Publication Number | Publication Date |
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| CN108941564A CN108941564A (en) | 2018-12-07 |
| CN108941564B true CN108941564B (en) | 2021-06-11 |
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| CN201810987857.5A Active CN108941564B (en) | 2018-08-28 | 2018-08-28 | Method for manufacturing metal molecular screen |
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Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| AU7961882A (en) * | 1981-01-29 | 1982-08-05 | Nippon Seisen Co. Ltd. | Metallic sintered body |
| WO1997015088A1 (en) * | 1995-10-17 | 1997-04-24 | Sanyo Electric Co., Ltd. | Alkaline battery using spongy metal substrate |
| TW387826B (en) * | 1997-03-11 | 2000-04-21 | Katayama Tokushu Kogyo Kk | Method of manufacturing porous sheet porous metal sheet manufactured by method, and electrode for battery |
| CN2393626Y (en) * | 1999-05-13 | 2000-08-30 | 中国人民解放军57605部队 | Purifying filtering materials containing particular adsorbent |
| CN1843597A (en) * | 2006-04-07 | 2006-10-11 | 陈明波 | A novel metal filtration film and preparation method thereof |
| GB0903262D0 (en) * | 2009-02-26 | 2009-04-08 | Johnson Matthey Plc | Filter |
| CN102512978A (en) * | 2011-11-23 | 2012-06-27 | 华南理工大学 | Paper sintering metal fiber load molecular sieve membrane and preparation method thereof |
| CN106215526A (en) * | 2016-08-31 | 2016-12-14 | 何县香 | A kind of composite filter felt |
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