CN2536316Y - High-speed electric explosion spraying devices - Google Patents
High-speed electric explosion spraying devices Download PDFInfo
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- CN2536316Y CN2536316Y CN 02235117 CN02235117U CN2536316Y CN 2536316 Y CN2536316 Y CN 2536316Y CN 02235117 CN02235117 CN 02235117 CN 02235117 U CN02235117 U CN 02235117U CN 2536316 Y CN2536316 Y CN 2536316Y
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Abstract
The utility model relates to an electro-spark high-speed spraying device which is applied to the surface engineering technology, and comprises a circuit which produces high-current, and a control device. The utility model is characterized in that an off-state electrode which is in the circuit which produces high-current is arranged on a support, and an explosion chamber which is allocated with the electrode and an electromagnetic pulse charger can effectively control the directions of explosion particles for flying towards all-around edges when in spraying, and when a coating layer is formed, a plane high-speed impact is directly applied to the coating layer which is arranged on the surface of a basal body, and the ultra-crystalline or nano-crystalline coating layer is formed. The utility model has the obvious advantages that any conducting materials or alloy materials can be fused, the influence of protected atmosphere is small, and the combination of the formed coating layer and the basal body is high in intensity and hardness, the simpler equipment and good economic and social benefits are provided.
Description
Technical field:
The utility model belongs to the thermal spraying apparatus in the field of surface engineering technique, especially applies ultra-fine crystalline substance, nanocrystalline discharge-induced explosion high-velocity spray device at substrate surface.
Technical background:
When current high performance structural material cost constantly rises,, widen its function to improving the performance of Material Used, prolong its service life, become the problem that presses for solution, therefore, the Surface Engineering development is very fast, and especially plasma spray technology obtains huge progress.
Adopt plasma spray technology; can make base material in wearability; corrosion resistance; the performance of each side such as hear resistance and insulating properties improves; promptly can be used as pre-resist technology and be applied to the new product manufacturing, can be used as the maintenance means again and be used for old reparation, comprise nearly all field of sophisticated technologies such as Aeronautics and Astronautics, atomic power device, electronics at present; plasma spray technology has all obtained using widely, and has obtained good economic benefit.
So-called plasma spray technology, exactly in order to improve the character of matrix material, utilize certain thermal source the sprayed on material fusion, and spray to the surface of matrix material and form a kind of technology of various coatings, can be divided into flame-spraying substantially, detonation flame spraying, supersonic spray coating, electric arc spraying, plasma spraying and laser spraying etc., traditional plasma spray technology such as electric arc spraying, flame-spraying etc. are and utilize the combustion flame of fuel gas that sprayed on material is heated, make it under fusion or state, spray to substrate material surface and form coating or utilize and between sprayed on material, produce electric arc near fusion, the heat energy that produces because of electric arc progressively dissolves sprayed on material, dissolving part is compressed air draught and sprays to matrix surface and form coating, though above-mentioned thermal spraying is the most frequently used spraying method, but the defective that exists some to be difficult to overcome, as: spraying rate is low; Coating and high base strength are lower; Some materials with high melting point of infusibility; Generally can not prepare ultra-fine crystalline substance, nanocrystalline coating; Because of using the certain insecurity of fuel gas tool, though the surface cladding of laser or electronics speed can be prepared ultra-fine crystal coating,, need scanning repeatedly because hot spot is less, bridge joint phenomenon (the bridge joint face mainly connects by Vander Walls power, and adhesion is weak) easily takes place at cladding process.Detonation flame spraying is a new technology that technical difficulty is big, processing performance is strong by U.S.'s invention.It is divided into two kinds of gas explosion and discharge-induced explosions, be characterized in molten particles speed big (supersonic speed) and produce shock wave making coating fine and close more, porosity is lower, thereby has obtained bond strength height, hardness height, coating that antiwear property is strong, is widely used in the Aeronautics and Astronautics field abroad, compare with conventional coating, the workpiece that the detonation flame spraying coating is arranged, improve at least more than 3 times its service life, but still it is complicated to exist device systems to make, the investment cost height, defective such as technical difficulty is big.
Summary of the invention:
Provide a kind of discharge-induced explosion high-velocity spray device of preparing ultra-fine crystalline substance, nanocrystalline coating with lower cost order of the present utility model, it can significantly improve coating and high base strength, coating is not peeled off under service load and reduce the bridge joint phenomenon, can prepare dystectic alloy coat, make the operation of spraying work more simple and effective.
For achieving the above object, discharge-induced explosion high-velocity spray device of the present utility model is made up of the circuit and the control device that produce big electric current, and the disconnection shape electrode that particularly produces in the circuit loop of big electric current is located on the support.
Discharge-induced explosion high-velocity spray device of the present utility model, can melt any conductive material, the particle of explosion time splash is trickle, epigranular, the speed of molten particles can reach 500-3000m/s, can be under the normal temperature state or in atmosphere or under the pressure vacuum state at workpiece, surfaces externally and internally to work applies, the porosity of formed ultra-fine crystalline substance, nanocrystalline coating is low and big with the base material bond strength, and spraying equipment is simpler, and cost is low.
Description of drawings:
Fig. 1 is the structural representation of embodiment of the present utility model.
Fig. 2 is the concrete structure schematic diagram of discharge-induced explosion of the present utility model chamber.
The specific embodiment:
Referring to Fig. 1-Fig. 2, the scheme of concrete enforcement of the present utility model is as follows:
Described discharge-induced explosion high-velocity spray device comprises that the disconnection shape electrode 2 in circuit and the control device, particularly circuit loop that produces big electric current is located on the support 1.
Described disconnection shape electrode 2 is one or more pairs of; Break distance between two opposite ends of every pair of electrode 2, can set according to the length dimension of Exploding Foil 5 or the lateral dimension of discharge-induced explosion chamber 3 inwalls, two end points of Exploding Foil 5 or silk link to each other with these two end points to the relative disconnection of electrode 2 respectively, make this become the connection shape because Exploding Foil 5 is coupled by disconnecting shape to electrode 2, when circuit for close and the time, in circuit, produce heavy impulse current, make Exploding Foil 5 or silk produce discharge-induced explosion in moment (tens microseconds are to the hundreds of microsecond), the melting particle spraying speed that blast produces can reach 500-3000m/s, form ultra-fine crystalline substance, nanocrystalline coating, spray different types of coating material or congener coating material simultaneously or at interval need repeat to spray the time as need, can be provided with many to electrode 2, every pair of electrode 2 can simultaneously or successively produce discharge-induced explosion by the time sequencing of setting, make formerly the specification requirement that just can reach coating repeatedly repeatedly to be sprayed that becoming only needs to carry out once-through operation and finish.
The support 1 of described belt electrode 2 places in the container 8; This container 8 is one closed jar or case, and the support 1 and the workpiece 4 of belt electrode 2 all place this jar or case.
The support 1 of described belt electrode 2 places in the container 8, and container 8 is a sealable container, and container 8 is connected with vacuum machine (not shown), is provided with shutoff valve 9 between vacuum machine and the container 8; In spraying process, the melting particle that the coating material of easy high-temperature oxydation produces because of discharge-induced explosion awing can contact with the oxygen in the atmosphere and react, thereby cause and contain oxide in the coating, so, when using this type of coating material, can container 8 is airtight, open shutoff valve 9, start the vacuum machine, (vacuum is the highest by 4 * 10 with container 8 vacuum pumpings
-4Pa); or the inert gas and the tool certain pressure of protectiveness will be charged in the container 8; just can prepare high-quality coating; be difficult for the coating material of high-temperature oxydation for other; then can in atmosphere, directly spray; need not to use the vacuum machine, the support 1 of belt electrode 2 and workpiece 4 all place in this container 8.
Described electrode 2 is provided with discharge-induced explosion chamber 3, and this discharge-induced explosion chamber 3 is for having the heavy wall thing of through hole, and the horizontal minimum dimension of through hole should be more than or equal to two distance between electrodes; Make for insulating materials discharge-induced explosion chamber 3, be arranged on the top of electrode 2, its interior shape is rectangle or cartridge type hollow via-hole shape, end mouth is positioned at the top of electrode 2, opening is relative with workpiece 4 to be processed, the inwall lateral dimension of this explosion chamber 3 can be set according to concrete operating position, optimum size is more than or equal to two distance between electrodes, when discharge-induced explosion produces, the heading of discharge-induced explosion chamber 3 constraint melting particles, play the effect of spray chamber, make the melting particle outwards be ejected into the workpiece relative 4 surfaces with it from its opening part.
Described electrode 2 has a percussion mechanism; This device is arranged on the below of electrode 2, and this device coating to workpiece 4 matrix surfaces when coating material energising produces blast and forms coating directly applies a plane high speed impact, makes coating cool off at a terrific speed that (cooling velocity is 10
8～10
4℃/s is interior), more fine and close, as not have pore, best bright finish coating obtained.
Described percussion mechanism is an induction coil 7, and induction coil 7 is provided with a magnetic metal piece 6, and shock surface is a best bright finish; The shock surface that impacts with metal derby 6 is a best bright finish, the lateral dimension of this metal derby is slightly less than the lateral dimension of explosion chamber 3 inwalls, be arranged on the below of electrode 2, the center line of its longitudinal centre line and explosion chamber 3 through holes matches, this metal derby is the magnetic metal piece, and be arranged on induction coil 7 tops, when induction coil 7 energisings, produce forceful electric power magnetic force in moment, this metal derby of forceful electric power magnetically-actuated that is produced travels forward at a high speed, directly impact coating surface, make coating more smooth, fine and close, do not have a pore.
Described percussion mechanism is a discharge-induced explosion paper tinsel 5, is one nonmetal or sheet on the discharge-induced explosion paper tinsel 5, and shock surface is a best bright finish; One or more pairs of electrodes are set below electrode 2, placing a shock surface on the Exploding Foil is nonmetal or sheet of best bright finish, nonmetal of explosion wave promotion or sheet that the Exploding Foil energising produces travel forward at a high speed, directly impact coating surface, the effect that is produced and electric induction coil 7 drives metal derbies 6, and directly to impact the effect of coating surfaces identical, and the discharge-induced explosion when applying can reach splendid dynamic response.
Described electrode 2 can be provided with also curve-like or space multistory setting at a certain distance apart from a determining deviation straight line; According to the required shape that sprays workpiece 4, quantity, and the position (inwall of outside or hollow) of coating the arrangement position of electrode 2 is set, the arrangement of electrode 2 can be adopted arranged in a straight line or curved arrangement or space multistory (both around the orientation up and down around the workpiece) arrangement, is very suitable for the different parts of difform workpiece or workpiece is sprayed.
Above-mentioned discharge-induced explosion high-velocity spray device, can significantly improve coating and high base strength, can prepare the nanocrystalline (coating of crystal grain diameter≤100nm) of ultra-fine crystalline substance (crystal grain diameter 0.1～10 μ m), can spray at the surfaces externally and internally of metal and non-metal workpiece, cost is lower, do not have environmental pollution, have good economic and social benefit.
Claims (10)
1. a discharge-induced explosion high-velocity spray device comprises circuit and the control device of producing big electric current, it is characterized in that the disconnection shape electrode (2) in the circuit is located on the support (1).
2. by the described spray equipment of claim 1, it is characterized in that described disconnection shape electrode (2) is for one or more pairs of.
3. by claim 1 or 2 described spray equipments, it is characterized in that the support (1) of described belt electrode (2) places in the container (8).
4. by the described spray equipment of claim 3, it is characterized in that described container (8) is a sealable container, container (8) is connected with the vacuum machine, is provided with shutoff valve (9) between vacuum machine and the container.
5. by claim 1 or 2 described spray equipments, it is characterized in that electrode (2) is provided with discharge-induced explosion chamber (3), this discharge-induced explosion chamber (3) is for having the heavy wall thing of through hole, and the horizontal minimum dimension of through hole should be more than or equal to two distance between electrodes.
6. by the described spray equipment of claim 3, it is characterized in that electrode (2) is provided with discharge-induced explosion chamber (3), this discharge-induced explosion chamber (3) is for having the heavy wall thing of through hole, and the horizontal minimum dimension of through hole should be more than or equal to two distance between electrodes.
7. by claim 1 or 2 described spray equipments, it is characterized in that electrode (2) is transferred to be provided with a percussion mechanism.
8. by the described spray equipment of claim 7, it is characterized in that described percussion mechanism is an induction coil (7), induction coil (7) is provided with a magnetic metal piece (6), and shock surface is a best bright finish.
9. by the described spray equipment of claim 7, it is characterized in that described percussion mechanism is a discharge-induced explosion paper tinsel (5), is one nonmetal or sheet on the discharge-induced explosion paper tinsel, and shock surface is a best bright finish.
10. by claim 1 or 2 described spray equipments, it is characterized in that electrode (2) can be provided with apart from a determining deviation linearity, also can be by certain spacing curve-like or main body setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02235117 CN2536316Y (en) | 2002-05-08 | 2002-05-08 | High-speed electric explosion spraying devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02235117 CN2536316Y (en) | 2002-05-08 | 2002-05-08 | High-speed electric explosion spraying devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2536316Y true CN2536316Y (en) | 2003-02-19 |
Family
ID=33709726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02235117 Expired - Fee Related CN2536316Y (en) | 2002-05-08 | 2002-05-08 | High-speed electric explosion spraying devices |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2536316Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100560780C (en) * | 2005-10-08 | 2009-11-18 | 华北电力大学（北京） | Electrically exploding and electromagnetically accelerated superhigh speed spraying process |
| CN103305785A (en) * | 2012-03-06 | 2013-09-18 | 兰州理工大学 | Pressure sensitive adhesive carrier powder continuous electro-explosive spraying device |
| CN104532179A (en) * | 2014-12-10 | 2015-04-22 | 北京理工大学 | Vertical wire feeding device |
| CN111235568A (en) * | 2020-01-17 | 2020-06-05 | 上海交通大学 | Method for depositing nano material |
| CN116251962A (en) * | 2023-04-12 | 2023-06-13 | 南昌航空大学 | Method and device for manufacturing amorphous/nanocrystalline material |
-
2002
- 2002-05-08 CN CN 02235117 patent/CN2536316Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100560780C (en) * | 2005-10-08 | 2009-11-18 | 华北电力大学（北京） | Electrically exploding and electromagnetically accelerated superhigh speed spraying process |
| CN103305785A (en) * | 2012-03-06 | 2013-09-18 | 兰州理工大学 | Pressure sensitive adhesive carrier powder continuous electro-explosive spraying device |
| CN103305785B (en) * | 2012-03-06 | 2015-04-22 | 兰州理工大学 | Pressure sensitive adhesive carrier powder continuous electro-explosive spraying device |
| CN104532179A (en) * | 2014-12-10 | 2015-04-22 | 北京理工大学 | Vertical wire feeding device |
| CN104532179B (en) * | 2014-12-10 | 2016-12-07 | 北京理工大学 | A kind of vertically wire feeder |
| CN111235568A (en) * | 2020-01-17 | 2020-06-05 | 上海交通大学 | Method for depositing nano material |
| CN116251962A (en) * | 2023-04-12 | 2023-06-13 | 南昌航空大学 | Method and device for manufacturing amorphous/nanocrystalline material |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |