CN108788172A - A kind of equipment preparing ultra-fine pure metal powder - Google Patents

A kind of equipment preparing ultra-fine pure metal powder Download PDF

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Publication number
CN108788172A
CN108788172A CN201810666514.9A CN201810666514A CN108788172A CN 108788172 A CN108788172 A CN 108788172A CN 201810666514 A CN201810666514 A CN 201810666514A CN 108788172 A CN108788172 A CN 108788172A
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China
Prior art keywords
processed
powder
pure metal
metal powder
pipeline
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CN201810666514.9A
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CN108788172B (en
Inventor
陈小林
刘洋
韩志宇
赖运金
王庆相
梁书锦
张平祥
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Xi'an Ouzhong Materials Technology Co ltd
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XI'AN OUZHONG MATERIAL TECHNOLOGY Co Ltd
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Publication of CN108788172A publication Critical patent/CN108788172A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22FWORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00Making metallic powder or suspensions thereof
    • B22F9/02Making metallic powder or suspensions thereof using physical processes
    • B22F9/14Making metallic powder or suspensions thereof using physical processes using electric discharge

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  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Plasma Technology (AREA)

Abstract

A kind of equipment preparing ultra-fine pure metal powder, the powder locular wall processed that the entrance of powder room processed is opposite are equipped with plasma gun;Strip V-block is equipped on the downside of entrance, upside is equipped with pusher;The inner wall surrounding of entrance and the powder chamber interior walls processed of plasma gun are equipped with aqueous cold plate;Powder room processed bottom is connected with collector;Powder room processed is connected by heat exchanger with mixed gas tank;Mixed gas tank is connected with supply station, compressor;Compressor is connected by air blower with deduster;Deduster is connected by drier with conical opening;Simple metal bar on V-block moves powder room under the action of push rod transmission mechanism;The plasma arc that plasma gun generates coats bar end, and metal vapors is leaving plasma arc a distance, encounters to sublimate after cryogenic gas and generates pure metal powder;Aqueous cold plate slows down injury of the high-temperature plasma arc to powder room processed;Gas-circulating system provides mixed gas to plasma gun;Have the advantages that simple and stable structure, reduction powder cost processed, operational safety.

Description

A kind of equipment preparing ultra-fine pure metal powder
Technical field
The invention belongs to pure metal powder preparing technical fields, and in particular to a kind of to prepare setting for ultra-fine pure metal powder It is standby.
Background technology
It is that increasing material manufacturing industry obtains a kind of important of high-quality raw material to obtain thin metal powder by plasma flouring technology Means, plasma flouring technology is at present mainly with plasma rotating electrode atomization powder(PREP methods)It is atomized and makes with plasma fuse Powder(PA methods)Based on.PREP methods and the powder maximum feature of PA methods production are that fine powder recovery rate is relatively low, the core of PREP methods and PA methods Heart principle is plasma arc melting solid metal, and metallic solution cooling generates ball powder, since there are surface tension for solution Reason limits the generation of attritive powder, and therefore, the fine powder recovery rate of PREP methods and PA methods is relatively low.The excessive limitation of powder size The development of both technologies, also limits the pure metal powder prepared by both techniques in increasing material manufacturing industry Using.
Invention content
In order to overcome the above-mentioned deficiencies of the prior art, ultra-fine pure metal powder is prepared the object of the present invention is to provide a kind of Equipment, the simple metal that can be prepared have pure titanium, pure niobium, fine aluminium, pure iron, fine copper, solve existing plasma rotating electrode powder dress Set the low puzzlement of fine powder recovery rate;Have the advantages that simple and stable structure, reduction powder cost processed, operational safety.
To achieve the above object, the technical solution adopted in the present invention is a kind of equipment preparing ultra-fine pure metal powder, It is characterised in that it includes there is powder room processed, the side of powder room processed is entrance, and the opposite powder locular wall processed of entrance is equipped with plasma gun; Strip V-block is equipped on the downside of entrance;Pusher is equipped on the upside of entrance;The inner wall surrounding of entrance and the powder processed of plasma gun surrounding Chamber interior walls are equipped with aqueous cold plate;Powder room processed bottom is conical opening, and conical opening is connected with collector;Powder room processed top passes through pipeline One is connected with heat exchanger, and heat exchanger input terminal is connected with mixed gas tank;The input terminal of mixed gas tank respectively with supply station, compressor It is connected;The air inlet of compressor is connected with air blower;The inlet end of air blower is connected with deduster;Deduster by drier with Conical opening is connected.
The pusher includes to be located at entrance upside, the guide rail parallel with V-block, and guide rail is equipped with sliding block, sliding Block lower part is connected with charging ram.
The strip V-block is used for mode simple metal bar;Plasma gun, for opening arc and generating the plasma of high temperature Arc.
The pipeline one and the junction of powder room processed are equipped with filter screen two.
Spring safety valve is equipped on the upside of the powder room processed.
Filter screen one is equipped in the conical opening.
It is equipped with pipeline five between the drier and conical opening, filter screen three is equipped in pipeline five.
The mixed gas tank input terminal is connected by pipeline two with supply station, and pipeline two is equipped with shut-off valve two;Mixed gas tank Input terminal is connected by pipeline three with compressor, and pipeline three is equipped with shut-off valve one.
The external upper of the plasma gun is connected by pipeline four with the output end of mixed gas tank.
The drier, deduster, air blower, compressor, mixed gas tank, supply station, powder room processed composition gas circulation system System, gas-circulating system provide Ar to plasma gun:He:H2=1:6:3 ratio mixed gas.
The beneficial effects of the invention are as follows:
Compared with prior art, the present invention does not have high-precision processing request to fuel rod, substantially reduces being prepared to for raw material This, raw material is common machined simple metal bar, can substantially reduce production cost;Due to no longer making bar generate melting Drop overcomes the effect of surface tension to generate powder, therefore bar does not need high-speed rotation, reduce equipment operation vibration and Noise increases the safety of equipment operation;Powder room processed space can be reduced simultaneously, greatly reduces powder room processed manufacturing cost;System Standby pure metal powder elemental composition is stablized, the characteristics of segregation problems are not present, can utmostly embody base material;Due to using big METAL HEATING PROCESS is directly become gaseous state by power plasma rifle, and then rapid cooling forms attritive powder, can be by plasma flouring technology The pure metal powder fine powder of production(Less than 45 μ)Recovery rate is increased to 80% or more from current 20%, overcomes conventionally employed etc. Ion processes equipment fine powder recovery rate is low(It is no more than 30% less than 53 μ)The problem of;Since fine powder is the main of increasing material manufacturing industry With powder, the raising of fine powder technology of preparing will reduce the cost of fine powder preparation, the final fast development for driving increasing material manufacturing.
The high-temperature region of powder room 9 processed is nearby equipped with aqueous cold plate 7 and carries out additional protection, can to avoid or mitigate plasma arc Ablation of 8 high temperature to powder room 9 processed.
9 lower part of powder room processed is equipped with filter screen 1, can filter out undesirable bulky grain, make to meet the requirements Powder enter in collector 12.
The push rod transmission mechanism being made of guide rail 1, sliding block 2, charging ram 3 is under motor driving, by simple metal bar 4 along length V-block 5 is slowly pushed into Transmission Room 9.
Due to being equipped with spring safety valve 6 on powder room 9 processed, spring safety valve 6 is ensureing system pressure without departing from default Value.Ensure that system pressure is stablized by safety valve and additional gas supplement, it is ensured that powder preparing processes are smoothed out.
On the one hand the gas-circulating system being connected with powder room 9 processed provides Ar to high powered plasma rifle 10:He:H2=1:6:3 Ratio mixed gas, for generating plasma arc 8, the starting the arc can not only be stablized by playing, but also can provide the work of high-temperature plasma arc With, it is ensured that the heat of plasma arc 8 can make bar heating sublimation;On the other hand providing cryogenic gas ensures that metal vapors coagulates rapidly China generates fine powder.
Description of the drawings
Fig. 1 is a kind of schematic diagram for the equipment preparing ultra-fine pure metal powder of the present invention.
In figure, 1. guide rails, 2. sliding blocks, 3. charging rams, 4. simple metal bars, 5. strip V-blocks, 6. spring safety valves, 7. Aqueous cold plate, 8. plasma arcs, 9. powder rooms processed, 10. plasma guns, 11. filter screens one, 12. collectors, 13. filter screens three, 14. Drier, 15. dedusters, 16. air blowers, 17. compressors, 18. shut-off valves one, 19. shut-off valves two, 20. mixed gas tanks, 21. change Hot device, 22. filter screens two, 23. supply stations.
Specific implementation mode
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
Referring to attached drawing 1, a kind of equipment preparing ultra-fine pure metal powder, which is characterized in that include powder room 9 processed, powder processed The side of room 9 is entrance, and the opposite powder locular wall processed of entrance is equipped with plasma gun 10;Strip V-block 5 is equipped on the downside of entrance;Enter Pusher is equipped on the upside of mouthful;The inner wall surrounding of entrance is equipped with aqueous cold plate 7 with the powder chamber interior walls processed of 10 surrounding of plasma gun;System 9 bottom of powder room is conical opening, and conical opening is connected with collector 12;9 top of powder room processed is connected by pipeline one with heat exchanger 21 Logical, 21 input terminal of heat exchanger is connected with mixed gas tank 20;The input terminal of mixed gas tank 20 respectively with supply station 23,17 phase of compressor Even;The air inlet of compressor 17 is connected with air blower 16;The inlet end of air blower 16 is connected with deduster 15;Deduster 15 passes through Drier 14 is connected with conical opening.
The pusher includes to be located at entrance upside, the guide rail 1 parallel with V-block 5, and guide rail 1 is equipped with sliding block 2,2 lower part of sliding block is connected with charging ram 3.
The pipeline one and the junction of powder room 9 processed are equipped with filter screen 2 22.
9 upside of powder room processed is equipped with spring safety valve 6.
Filter screen 1 is equipped in the conical opening.
It is equipped with pipeline five between the drier 14 and conical opening, filter screen 3 13 is equipped in pipeline five.
20 input terminal of mixed gas tank is connected by pipeline two with supply station 23, and pipeline two is equipped with shut-off valve 2 19; Mixed 20 input terminal of gas tank is connected by pipeline three with compressor 17, and pipeline three is equipped with shut-off valve 1.
The external upper of the plasma gun 10 is connected by pipeline four with the output end of mixed gas tank 20.
Drier 14, deduster 15, air blower 16, compressor 17, mixed gas tank 20, supply station 23, powder room 9 processed form gas On the one hand the circulatory system, gas-circulating system provide Ar to plasma gun:He:H2=1:6:3 ratio mixed gas, it is ensured that wait from Sub- rifle generates larger heat and promotes to coat metal distillation, and on the other hand providing cryogenic gas ensures that metal vapors is sublimated rapidly life At fine powder.
The simple metal bar 4 on strip V-block 5 is placed on gradually to move to powder room 9 processed under the action of push rod transmission mechanism It is dynamic;There are powerful plasma gun 10, the plasma formed between plasma gun 10 and simple metal bar 4 in the powder room processed other side Arc 8 coats bar end, and the high temperature that plasma arc 8 generates will coat metal distillation(Solid-state directly becomes gaseous state), disperse making Metal vapors is leaving 8 a distance of plasma arc in powder room 9, is coagulated rapidly after encountering the cryogenic gas that 9 top of powder room processed enters China generates attritive powder.
The mixed gas that supply station 23 provides enters mixed gas tank 20 after shut-off valve 2 19 and realizes uniform mixing, later gas It is divided into two-way, gas is supplied to high powered plasma rifle 10 all the way, for opening arc and generating the plasma arc 8 of high temperature;Gas all the way Body, which enters after the operative temperature of heat exchanger 21 reduces through filter screen 2 22, is used for condensing metal steam in powder room 9 processed, production Raw tiny pure metal powder, eventually enters into collector 12.
The mixed gas of outflow powder room 9 processed is dried by drier 14,15 dedusting of deduster, air blower 16 and compressor After 17 pressurizations, is entered by shut-off valve 1 and mixed in gas tank 20.(At this point, shut-off valve 2 19 is closed)
Supply station is by Ar gas, He gas, H2The system that gas forms adjustable gas mixed proportion.The gas fed back according to detection unit When gas-circulating system hypotony occurs in the pressure condition of the circulatory system, shut-off valve 2 19, which is opened, carries out additional gas benefit It fills.
A kind of equipment preparing ultra-fine pure metal powder, 9 one end of powder room processed with water-cooling jacket are connected with simple metal bar 4, Guide rail 1 and sliding block 2 and charging ram 3 composition pusher push simple metal bar 4 slowly to enter system under the support of strip V-block In powder room 9;9 other end of powder room processed is connected with high powered plasma rifle 10, is produced between high powered plasma rifle 10 and simple metal bar 4 Raw plasma arc 8, the end heat of simple metal bar 4 is sublimed into metal gas by the heat that plasma arc 8 generates, in metal gas Body leaves after the high-temperature region near plasma arc 8 encounters cryogenic gas medium, sublimates generate lemel rapidly, in gas circulation Enter in collector 12 by the filtering of No. I filter screen 11 under the action of system, completes the preparation and collection of powder.Gas circulation System provides adjustable Ar gas, He gas and H than row by supply station 232Mixed gas, in mixed gas tank 20 after mixing It is divided into two-way, is supplied to high powered plasma rifle 10 all the way, as the medium for generating plasma arc 8;Pass through heat exchanger 21 all the way Cooling, No. III filter screen 22 is rear after filtering to enter powder room 9 processed.Then two-way gas meets in powder room processed through No. II filter screen 13, drier 14, deduster 15, air blower 16, compressor 17 enters mixed gas tank 20 after No. I shut-off valve 18 and forms gas circulation Circuit.In addition, being equipped with spring safety valve 6 on powder room 9 processed to ensure the gas pressure of powder room 9 processed without departing from preset value, water Recyclable cooling water is passed through in cold dish 7 to be used for reducing side effect caused by plasma arc 8.
In use, closing No. I shut-off valve 18, No. II shut-off valve 19 is opened, supply station 23 provides a certain proportion of Ar gas, He Gas and H2Mixed gas enter and mix after gas tank 20 is sufficiently mixed, close No. II shut-off valve 19 and open No. I shut-off valve 18, Drier 14, deduster 15, air blower 16, compressor 17, heat exchanger 21 realize moving in circles for mixed gas.Inflow powder room 9 gas enters by No. III filter screen 22, and the gas for flowing out powder room 9 processed is discharged by No. II filter screen 13.It is high-power it is equal from 4 end of simple metal bar is made after powder and is carried out into collector 12 by No. I filter 11 by the generation plasma arc 8 of sub- rifle 10 It collects.Charging ram 3 slowly pushes away simple metal bar 4 under the push feed system effect that guide rail 1, sliding block 2 and strip V-block 5 form In system powder room 9, the continuity of powder processed is realized.When system pressure is excessively high, spring safety valve 6 starts decompression;System pressure value mistake When low, No. I shut-off valve 19, which is opened, carries out additional gas supplement.
The simple metal that can be prepared has pure titanium, pure niobium, fine aluminium, pure iron, fine copper etc..

Claims (10)

1. a kind of equipment preparing ultra-fine pure metal powder, which is characterized in that include powder room 9 processed, the side of powder room 9 processed be into Mouthful, the opposite powder locular wall processed of entrance is equipped with plasma gun 10;Strip V-block 5 is equipped on the downside of entrance;Pusher is equipped on the upside of entrance Mechanism;The inner wall surrounding of entrance is equipped with aqueous cold plate 7 with the powder chamber interior walls processed of 10 surrounding of plasma gun;9 bottom of powder room processed is cone Shape mouth, conical opening are connected with collector 12;9 top of powder room processed is connected by pipeline one with heat exchanger 21, and heat exchanger 21 is defeated Enter end with mixed gas tank 20 to be connected;The input terminal of mixed gas tank 20 is connected with supply station 23, compressor 17 respectively;Compressor 17 into Gas port is connected with air blower 16;The inlet end of air blower 16 is connected with deduster 15;Deduster 15 passes through drier 14 and taper Mouth is connected.
2. a kind of equipment preparing ultra-fine pure metal powder according to claim 1, which is characterized in that the pusher Structure includes to be located at entrance upside, the guide rail 1 parallel with strip V-block 5, and guide rail 1 is equipped with sliding block 2, and 2 lower part of sliding block is connected with Charging ram 3.
3. a kind of equipment preparing ultra-fine pure metal powder according to claim 1, which is characterized in that the strip V Type block 5 is used for mode simple metal bar 4;Plasma gun 10, for opening arc and generating the plasma arc 8 of high temperature.
4. a kind of equipment preparing ultra-fine pure metal powder according to claim 1, which is characterized in that the pipeline one It is equipped with filter screen 2 22 with the junction of powder room 9 processed.
5. a kind of equipment preparing ultra-fine pure metal powder according to claim 1, which is characterized in that the powder room processed 9 upsides are equipped with spring safety valve 6.
6. a kind of equipment preparing ultra-fine pure metal powder according to claim 1, which is characterized in that the conical opening It is interior to be equipped with filter screen 1.
7. a kind of equipment preparing ultra-fine pure metal powder according to claim 1, which is characterized in that the drier It is equipped with pipeline five between 14 and conical opening, filter screen 3 13 is equipped in pipeline five.
8. a kind of equipment preparing ultra-fine pure metal powder according to claim 1, which is characterized in that the mixed gas tank 20 input terminals are connected by pipeline two with supply station 23, and pipeline two is equipped with shut-off valve 2 19;Mixed 20 input terminal of gas tank passes through pipe Road three is connected with compressor 17, and pipeline three is equipped with shut-off valve 1.
9. a kind of equipment preparing ultra-fine pure metal powder according to claim 1, which is characterized in that the plasma The external upper of rifle 10 is connected by pipeline four with the output end of mixed gas tank 20.
10. a kind of equipment preparing ultra-fine pure metal powder according to claim 1 or 8, which is characterized in that described is dry Dry device 14, deduster 15, air blower 16, compressor 17, mixed gas tank 20, supply station 23, powder room 9 processed form gas-circulating system, Gas-circulating system provides Ar to plasma gun:He:H2=1:6:3 ratio mixed gas.
CN201810666514.9A 2018-06-26 2018-06-26 Equipment for preparing superfine pure metal powder Active CN108788172B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110434351A (en) * 2019-08-06 2019-11-12 西部超导材料科技股份有限公司 A kind of rotation electrode powder manufacturing apparatus and its gas cooling circulatory system
CN113967735A (en) * 2021-10-20 2022-01-25 广东长信精密设备有限公司 Metal powder mixing method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2629878Y (en) * 2003-07-25 2004-08-04 浙江省新昌县恒升金属纳米材料有限公司 Nano metal powder producing apparatus
US20060162495A1 (en) * 2002-12-27 2006-07-27 Industrial Technology Research Institute Nanostructured metal powder and method of fabricating the same
CN101327519A (en) * 2008-07-18 2008-12-24 张建利 Plasma rotating electrode milling machine group and technique
CN102189252A (en) * 2010-03-19 2011-09-21 住友金属矿山株式会社 Nickel micro powder and manufacturing method thereof
CN106853534A (en) * 2016-12-19 2017-06-16 西安欧中材料科技有限公司 A kind of device for improving titanium alloy powder yield rate

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060162495A1 (en) * 2002-12-27 2006-07-27 Industrial Technology Research Institute Nanostructured metal powder and method of fabricating the same
CN2629878Y (en) * 2003-07-25 2004-08-04 浙江省新昌县恒升金属纳米材料有限公司 Nano metal powder producing apparatus
CN101327519A (en) * 2008-07-18 2008-12-24 张建利 Plasma rotating electrode milling machine group and technique
CN102189252A (en) * 2010-03-19 2011-09-21 住友金属矿山株式会社 Nickel micro powder and manufacturing method thereof
CN106853534A (en) * 2016-12-19 2017-06-16 西安欧中材料科技有限公司 A kind of device for improving titanium alloy powder yield rate

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110434351A (en) * 2019-08-06 2019-11-12 西部超导材料科技股份有限公司 A kind of rotation electrode powder manufacturing apparatus and its gas cooling circulatory system
CN113967735A (en) * 2021-10-20 2022-01-25 广东长信精密设备有限公司 Metal powder mixing method

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Address after: 710018 No. 45, Fengcheng Second Road, Xi'an Economic and Technological Development Zone, Xi'an City, Shaanxi Province

Patentee after: Xi'an Ouzhong Materials Technology Co.,Ltd.

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Address before: No.45, Fengcheng 2nd Road, economic and Technological Development Zone, Xi'an, Shaanxi 710018

Patentee before: XI'AN SINO-EURO MATERIALS TECHNOLOGIES Co.,Ltd.

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