CN218656818U - Preparation device for dispersed copper electrical contact material - Google Patents
Preparation device for dispersed copper electrical contact material Download PDFInfo
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- CN218656818U CN218656818U CN202223368792.7U CN202223368792U CN218656818U CN 218656818 U CN218656818 U CN 218656818U CN 202223368792 U CN202223368792 U CN 202223368792U CN 218656818 U CN218656818 U CN 218656818U
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Abstract
The utility model discloses a device for preparing a dispersed copper electrical contact material, which belongs to the technical field of electrical contacts and comprises an atomizing device, an atomizing chamber and a stirring and mixing device, wherein the atomizing device is used for preparing Cu-Al alloy powder; the atomization chamber is provided with a hot air pump, the air outlet end of the hot air pump is communicated with the air inlet end of the atomization chamber, and the air outlet end of the atomization chamber is provided with a gas-solid separator; the stirring and mixing device is provided with a stirring roller, a heating air pipe is arranged on the stirring roller, and the air outlet end of the gas-solid separator is communicated with the air inlet end of the heating air pipe; the bottom of the atomization chamber is provided with a solid deposition chamber, and the discharge end of the solid deposition chamber is connected with the feed end of the stirring and mixing device. Most moisture can directly be taken away through the hot-blast effect in the atomizer chamber, then utilize hot-blast waste heat to the heating of stirring running roller for the powder is secondary dry when the stirring, makes stirring and drying go on simultaneously, raises the efficiency, simultaneously to heat energy make full use of.
Description
Technical Field
The utility model relates to an electrical contact technical field especially relates to a dispersion copper electrical contact material preparation facilities.
Background
Electrical contacts are one of the most important components of electromagnetic relays. The performance of the contacts is affected by factors such as contact material, contact pressure, load type, operating frequency, atmospheric environment, contact configuration, and bounce. If any of these factors fails to satisfy the predetermined value, there may occur a problem of point contact such as electrochemical corrosion of metal between contacts, contact welding, abrasion, rapid increase in contact resistance, and the like. The dispersion strengthened copper alloy is also called as aluminum oxide copper (Cu-Al 2O 3) which is an excellent high-strength and high-conductivity material. Due to the dispersion strengthening effect of the nano Al2O3 on the matrix copper, the alloy has the characteristics of high strength, high hardness, high conductivity, high softening temperature and the like. The aluminum oxide copper used for manufacturing the electrical contact has excellent performance, greatly prolongs the service life of the relay, and ensures the product quality.
The traditional process for preparing the Cu-Al2O3 alloy by the internal oxidation method comprises the following steps: firstly, proportioning according to the Al content requirement, smelting Cu-Al alloy in an induction furnace, and then atomizing Cu-Al alloy melt into Cu-Al alloy powder by adopting a water atomization method or N2. And uniformly mixing the dried Cu-Al alloy powder and Cu2O powder, then putting the mixed powder into a vacuum furnace, heating to 800-1000 ℃, and preserving heat for a certain time for internal oxidation. The oxygen partial pressure is controlled so that Al in the Cu-Al alloy is oxidized, while Cu is not oxidized. And obtaining mixed powder of Cu-Al2O3 powder, cu powder and residual Cu2O after the internal oxidation is finished. And introducing H2 to remove residual oxygen to obtain Cu-Al2O3 powder and Cu powder. Then sheathing, vacuumizing, isostatic pressing to make blank, hot extruding to obtain extruded blank, and cold drawing to obtain the required section.
When the existing internal oxidation method is used for preparation, an atomization method is generally adopted for preparing powder, the water content in the powder is high, the powder needs to be dried and then mixed, however, the efficiency of the existing device is not high when the mixed powder is dried, the powder needs to be transferred and mixed after being dried, and the generation process is complicated.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, the present invention is directed to solving the above-described problems. It is an object of the present invention to provide an apparatus for preparing a dispersed copper electrical contact material that solves the above problems. And directly transferring the atomized mixed powder from the atomization chamber to a device for mixing and drying to obtain uniformly mixed powder for carrying out a subsequent isostatic pressing process.
The utility model provides a device for preparing a dispersed copper electrical contact material, which comprises an atomizing device for preparing Cu-Al alloy powder, an atomizing chamber and a stirring and mixing device; the atomization chamber is provided with a hot air pump, the air outlet end of the hot air pump is communicated with the air inlet end of the atomization chamber, and the air outlet end of the atomization chamber is provided with a gas-solid separator; the stirring and mixing device is provided with a stirring roller wheel, a heating air pipe is arranged on the stirring roller wheel, and the air outlet end of the gas-solid separator is communicated with the air inlet end of the heating air pipe; the bottom of the atomization chamber is provided with a solid deposition chamber, and the discharge end of the solid deposition chamber is connected with the feed end of the stirring and mixing device.
The utility model discloses preferred technical scheme lies in, the atomizer chamber is provided with the hot air duct who is located the top, hot air duct with be provided with the slope guide plate between the solid deposition room, the slope guide plate orientation hot air duct's air inlet end sets up, so that the solid process get into along the inclined plane during the slope guide plate in the solid deposition room.
The utility model has the preferable technical proposal that the feeding end of the stirring and mixing device is provided with a feeding bin, the discharging end of the feeding bin is provided with a control valve, the stirring and mixing device is provided with a dry mixing chamber, and the stirring roller is arranged in the dry mixing chamber along the length direction of the dry mixing chamber; the feeding bin is located above one end of the drying and mixing chamber, and a discharging port is arranged below the other end of the drying and mixing chamber.
The utility model discloses preferred technical scheme lies in, be provided with a plurality of stirring boards, every along the circumferencial direction on the stirring running roller all be provided with a plurality of heated air pipes along length direction on the stirring board, the stirring mixing arrangement still is provided with inlet manifold, inlet manifold and a plurality of heated air pipe all communicates.
The utility model discloses preferred technical scheme lies in, the stirring running roller outside is provided with a plurality of straight scraper blades, straight scraper blade length direction with stirring board length direction is parallel, the stirring running roller outside still is provided with a plurality of oblique scraper blades, oblique scraper blade with stirring board length direction is the acute angle setting.
The utility model discloses preferred technical scheme lies in, the stirring mixing arrangement top is provided with the gas vent that looses, gas vent department is provided with the filter that looses.
The utility model discloses preferred technical scheme lies in, still includes isostatic pressing machine, sintering equipment, extrusion equipment, wire drawing equipment in proper order along process direction, and the alloy powder is followed stirring mixing arrangement gets into after coming out in the isostatic pressing machine.
The device for preparing the dispersed copper electrical contact material has the following technical effects:
the preparation device of the dispersed copper electrical contact material comprises an atomizing device, an atomizing chamber and a stirring and mixing device, wherein the atomizing device is used for preparing Cu-Al alloy powder; the atomization chamber is provided with a hot air pump, the air outlet end of the hot air pump is communicated with the air inlet end of the atomization chamber, and the air outlet end of the atomization chamber is provided with a gas-solid separator; the stirring and mixing device is provided with a stirring roller, a heating air pipe is arranged on the stirring roller, and the air outlet end of the gas-solid separator is communicated with the air inlet end of the heating air pipe; the bottom of the atomization chamber is provided with a solid deposition chamber, and the discharge end of the solid deposition chamber is connected with the feed end of the stirring and mixing device. Most moisture can directly be taken away through the hot-blast effect in the atomizer chamber, then utilize hot-blast waste heat to the heating of stirring running roller for the powder is secondary dry when the stirring, makes stirring and drying go on simultaneously, raises the efficiency, simultaneously to heat energy make full use of, the energy saving.
Other characteristic features and advantages of the invention will become apparent from the following description of exemplary embodiments, which is to be read in connection with the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention. In the drawings, like reference numerals are used to indicate like elements. The drawings in the following description are directed to some, but not all embodiments of the invention. To a person skilled in the art, without inventive effort, other figures can be derived from these figures.
Fig. 1 is a schematic view of an overall principle of a device for manufacturing a dispersed copper electrical contact material according to an embodiment of the present invention;
FIG. 2 is a schematic view of an atomization chamber provided in an embodiment of the present invention;
FIG. 3 is a schematic structural view of a stirring and mixing device provided in an embodiment of the present invention;
fig. 4 is an enlarged schematic view of a portion a of fig. 3 according to an embodiment of the present invention;
in the figure:
1. an atomization chamber; 2. a stirring and mixing device; 3. an atomizing device; 4. a hot air pump; 5. a gas-solid separator; 6. an isostatic press; 7. sintering equipment; 8. an extrusion device; 9. a wire drawing device; 11. a hot air passage; 12. a solids deposition chamber; 13. inclining the guide plate; 21. a drying and mixing chamber; 22. stirring rollers; 23. a feeding bin; 231. a control valve; 24. an air diffuser; 241. a filter; 221. stirring the plate; 222. heating the air pipe; 223. an inclined scraper; 224. a straight scraper.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.
The following describes the device for preparing the dispersed copper electrical contact material in detail with reference to the accompanying drawings and examples.
As shown in fig. 1-4, the utility model provides a device for preparing a dispersed copper electrical contact material, which comprises an atomizing device 3 for preparing Cu-Al alloy powder, an atomizing chamber 1 and a stirring and mixing device 2; the Cu-Al alloy powder is preferably prepared by a water atomization method, and preparation equipment belongs to the prior art and is not described herein. Atomizing chamber 1 is provided with hot-blast pump 4, and hot-blast pump 4 sends into atomizing chamber 1 with the good hot-air that heats in advance, and the air has been through deoxidization processing, then heats to more than 130 degrees centigrade. The air outlet end of the hot air pump 4 is communicated with the air inlet end of the atomizing chamber 1, and the air outlet end of the atomizing chamber 1 is provided with an air-solid separator 5; hot air is directly blown against the alloy powder which is just atomized, and the mixed water is quickly gasified under the action of the hot air and is discharged along with the hot air. The stirring and mixing device 2 is provided with a stirring roller 22, the stirring roller 22 is provided with a heating air pipe 222, and the air outlet end of the gas-solid separator 5 is communicated with the air inlet end of the heating air pipe 222; the bottom of the atomizing chamber 1 is provided with a solid deposition chamber 12, and the discharge end of the solid deposition chamber 12 is connected with the feed end of the stirring and mixing device 2. During stirring, heating pipe 222 heats with the contact of alloy powder for residual water in the alloy powder further gasifies, accomplishes drying work when stirring, practices thrift process time by a wide margin.
In order to better separate solid powder and water vapor, the atomizing chamber 1 is provided with a hot air channel 11 positioned above, an inclined guide plate 13 is arranged between the hot air channel 11 and the solid deposition chamber 12, and the inclined guide plate 13 plays a role in blocking the conveyed hot air so that the solid can be deposited. The inclined guide plate 13 is arranged towards the air inlet end of the hot air channel 11, so that the solids enter the solid deposition chamber 12 along an inclined plane when passing through the inclined guide plate 13. The hot air channel 11 is arranged to be long, and most of the solid powder is sunk into the solid deposition chamber 12 under the action of the inclined guide plate 13 through the long-path hot air delivery. Finally, the hot air passes through a gas-solid separator 5 to complete the final separation work. The powder settles down due to its settling action and a downward force on injection. The inclined guide plate 13 plays a role in blocking and accelerates the sedimentation of Cu-Al alloy powder.
Preferably, a feeding bin 23 is arranged at a feeding end of the stirring and mixing device 2, a control valve 231 is arranged at a discharging end of the feeding bin 23, the control valve 231 is operated in an electric control mode, the stirring and mixing device 2 is provided with a dry mixing chamber 21, and the stirring roller 22 is arranged in the dry mixing chamber 21 along the length direction of the dry mixing chamber 21; the feeding bin 23 is located above one end of the drying and mixing chamber 21, and a discharging hole is formed in the lower portion of the other end of the drying and mixing chamber 21. Alloy powder in the solid deposition chamber 12 is lifted by the elevator into the feed bin 23, and the feeding is controlled by controlling the opening of the control valve 231. After being sufficiently stirred and dried in the dry mixing chamber 21, the mixture is discharged from the other end.
In order to make the drying effect best, a plurality of stirring plates 221 are arranged on the stirring roller 22 along the circumferential direction, a plurality of heating air pipes 222 are arranged on each stirring plate 221 along the length direction, and the stirring mixing device 2 is further provided with an air inlet main pipe, wherein the pipe diameter of the air inlet main pipe along the conveying direction is smaller and smaller, so that the pressure of conveying air at each position is ensured to be balanced. The air inlet manifold is communicated with a plurality of heating air pipes 222. The heating gas pipe 222 is directly used as a stirring object to be contacted with Cu-Al alloy powder, and the alloy powder is fully heated while stirring, so that the heating gas pipe is used for heating the Cu-Al alloy powder
In order to make the mixture more even, the stirring roller wheel 22 outside is provided with a plurality of straight scraper blades 224, straight scraper blade 224 length direction with stirring board 221 length direction is parallel, the stirring roller wheel 22 outside still is provided with a plurality of oblique scraper blades 223, oblique scraper blade 223 with stirring board 221 length direction is the acute angle setting. The straight scrapers 224 and the inclined scrapers 223 are arranged in a staggered manner, so that the direction of the alloy powder is changed back and forth, and the mixing is better and uniform.
Preferably, the top of the stirring and mixing device 2 is provided with an air outlet 24, and a filter 241 is arranged at the air outlet 24. The air diffuser 24 is used for discharging the residual water vapor in the alloy powder. The air outlet end of the heating air pipe 222 is also provided with a water removal device, water is removed and then heated again, and then enters the hot air pump 4 for use along the cycle.
In the whole process, the alloy powder enters the isostatic pressing machine 6 after coming out of the stirring and mixing device 2, and the isostatic pressing machine 6, the sintering equipment 7, the extrusion equipment 8 and the wire drawing equipment 9 are sequentially arranged along the process direction, wherein the pressure of the isostatic pressing machine is 100-160MPa, and the temperature of the sintering equipment 7 is 1020 ℃. The extrusion device 8 is used for peeling and extruding, and adopts the temperature of 900-950 ℃. The wire drawing device 9 is used for manufacturing the material into the material with the thickness of 0.5-10mm and then manufacturing the rivet-shaped electric contact.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an article or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such article or apparatus. Without further limitation, an element defined by the phrases "comprising 8230; \8230;" 8230; "does not exclude the presence of additional like elements in an article or device comprising the element.
The above embodiments are merely to illustrate the technical solutions of the present invention and not to limit the present invention, and the present invention has been described in detail with reference to the preferred embodiments. It will be understood by those skilled in the art that various modifications and equivalent arrangements may be made without departing from the spirit and scope of the present invention and it should be understood that the present invention is to be covered by the appended claims.
Claims (7)
1. A preparation device of a dispersed copper electrical contact material is characterized in that:
comprises an atomizing device for preparing Cu-Al alloy powder, an atomizing chamber and a stirring and mixing device;
the atomization chamber is provided with a hot air pump, the air outlet end of the hot air pump is communicated with the air inlet end of the atomization chamber, and the air outlet end of the atomization chamber is provided with a gas-solid separator;
the stirring and mixing device is provided with a stirring roller, a heating air pipe is arranged on the stirring roller, and the air outlet end of the gas-solid separator is communicated with the air inlet end of the heating air pipe;
the bottom of the atomization chamber is provided with a solid deposition chamber, and the discharge end of the solid deposition chamber is connected with the feed end of the stirring and mixing device.
2. The apparatus for preparing a dispersed copper electrical contact material according to claim 1, wherein:
the atomizing chamber is provided with the hot air channel who is located the top, hot air channel with be provided with the slope guide plate between the solid deposition chamber, the slope guide plate orientation hot air channel's air inlet end sets up to make the solid pass through along the inclined plane entering during the slope guide plate in the solid deposition chamber.
3. The apparatus for preparing a dispersed copper electrical contact material according to claim 1, wherein:
the stirring and mixing device is provided with a drying and mixing chamber, and the stirring roller is arranged in the drying and mixing chamber along the length direction of the drying and mixing chamber; the feeding bin is located above one end of the drying and mixing chamber, and a discharging port is arranged below the other end of the drying and mixing chamber.
4. The apparatus for preparing a dispersed copper electrical contact material according to claim 1, wherein:
be provided with a plurality of stirring boards, every along the circumferencial direction on the stirring running roller all be provided with a plurality of air heating pipes along length direction on the stirring board, the stirring mixing arrangement still is provided with inlet manifold, inlet manifold and a plurality of air heating pipe all communicates.
5. The apparatus for preparing a dispersed copper electrical contact material according to claim 4, wherein:
the stirring running roller outside is provided with a plurality of straight scraper blades, straight scraper blade length direction with stirring board length direction is parallel, the stirring running roller outside still is provided with a plurality of oblique scraper blades, oblique scraper blade with stirring board length direction is the acute angle setting.
6. The apparatus for preparing a dispersed copper electrical contact material according to claim 4, wherein:
the top of the stirring and mixing device is provided with an air diffusing port, and a filter is arranged at the air diffusing port.
7. The apparatus for preparing a dispersed copper electrical contact material according to claim 1, wherein:
the device sequentially comprises an isostatic pressing machine, a sintering device, an extrusion device and a wire drawing device along the process direction, wherein alloy powder enters the isostatic pressing machine after coming out of the stirring and mixing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223368792.7U CN218656818U (en) | 2022-12-15 | 2022-12-15 | Preparation device for dispersed copper electrical contact material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223368792.7U CN218656818U (en) | 2022-12-15 | 2022-12-15 | Preparation device for dispersed copper electrical contact material |
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| CN218656818U true CN218656818U (en) | 2023-03-21 |
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| CN202223368792.7U Active CN218656818U (en) | 2022-12-15 | 2022-12-15 | Preparation device for dispersed copper electrical contact material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116329559A (en) * | 2023-05-30 | 2023-06-27 | 中色创新研究院(天津)有限公司 | Preparation equipment and preparation process of copper-nickel alloy |
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2022
- 2022-12-15 CN CN202223368792.7U patent/CN218656818U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116329559A (en) * | 2023-05-30 | 2023-06-27 | 中色创新研究院(天津)有限公司 | Preparation equipment and preparation process of copper-nickel alloy |
| CN116329559B (en) * | 2023-05-30 | 2023-08-08 | 中色创新研究院(天津)有限公司 | Preparation equipment and preparation process of copper-nickel alloy |
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