CN107052485B - Water curtain spray head based on electric jet mask processing - Google Patents
Water curtain spray head based on electric jet mask processing Download PDFInfo
- Publication number
- CN107052485B CN107052485B CN201710481585.7A CN201710481585A CN107052485B CN 107052485 B CN107052485 B CN 107052485B CN 201710481585 A CN201710481585 A CN 201710481585A CN 107052485 B CN107052485 B CN 107052485B
- Authority
- CN
- China
- Prior art keywords
- liquid inlet
- spray head
- water curtain
- liquid
- inlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H3/00—Electrochemical machining, i.e. removing metal by passing current between an electrode and a workpiece in the presence of an electrolyte
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H3/00—Electrochemical machining, i.e. removing metal by passing current between an electrode and a workpiece in the presence of an electrolyte
- B23H3/10—Supply or regeneration of working media
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
The invention discloses a water curtain spray head based on electric jet mask processing, which comprises a cylindrical spray head cavity, wherein a discharge-shaped liquid outlet is formed in the outer wall of the bottom of the spray head cavity along the length direction of the spray head cavity, a first liquid inlet is formed in one end of the spray head cavity, a second liquid inlet is formed in the other end of the spray head cavity, and the bottoms of the inner walls of the first liquid inlet and the second liquid inlet are flush with the upper surface of each liquid outlet. When the water curtain spray head is applied, the first liquid inlet and the second liquid inlet are respectively connected with the liquid supply pipe, electrolyte enters the spray head cavity in a flowing state through the first liquid inlet and the second liquid inlet, and the electrolyte flows out through the drainage-shaped liquid outlet, so that a jet flow electrolytic machining water curtain is formed, the jet flow machining can be flexibly adapted to machining workpieces with different mask structures, and the flexibility of the jet flow electrolytic machining is improved.
Description
Technical Field
The invention relates to the technical field of electrojet mask processing, in particular to a water curtain spray head based on electrojet mask processing.
Background
With the rapid development of aerospace, automobiles and machinery, the precision requirement is also improved, and electrolytic machining becomes a main machining mode.
The electrojet mask processing is a new technology for carrying out electrolytic processing, which is characterized in that metal is dissolved in an electrolyte jet environment through an external voltage, and is used for printing a surface functional micro-texture, high-speed charged electrolyte is subjected to high-resolution mask constraint to form an array micro-scale liquid electrode, and a photoetching technology and an electrohydraulic beam technology are combined, so that the photoetching and pattern transfer technology of electrohydraulic beams is realized, and the processing platform mainly comprises: the system comprises a cathode nozzle system, an anode clamp system, an electrolyte circulation system and a simple numerical control system.
Existing cathode nozzle systems have: 1. a capillary electrode; 2. and a capillary row electrode. The capillary tube is used as a tool cathode, a corrosion-resistant clamp is additionally arranged, the capillary tube is fragile and difficult to clamp, the end part of the capillary tube is difficult to be vertical to the surface of the workpiece anode in the clamping process, and the machining effect is influenced; in addition, due to the influence of manufacturing and assembling difficulties of the micro capillaries, electro-hydraulic beam processing is performed by adopting capillary electrodes, so that micro surface textures cannot be processed, and the processing efficiency is low; the capillary row electrode clamp is complex in design and difficult to clamp, the end part of the row electrode is difficult to ensure to be on the same horizontal line and vertical to the surface of the workpiece anode and limited by manufacturing and assembling of each row electrode, the capillary row electrode clamp can only be suitable for the batch processing field with fixed micro-texture spacing and relatively larger spacing, the clamp is complex in design, the electrode manufacturing and clamping are difficult, the processing efficiency is low, the processing consistency is poor, the jet electrolysis processing is limited by the manufacturing scale and the flexibility of arrangement of the electrode, the size of a mask on the workpiece is difficult to flexibly adapt, the surface micro-texture with good consistency is manufactured on a large scale, and the online detection and the observation of the whole appearance of a processing structure are not facilitated.
Therefore, how to solve the defects of difficult manufacturing, difficult clamping, poor flexibility, low processing efficiency and poor processing consistency of the current cathode nozzle system is a technical problem to be solved by the technicians in the field.
Disclosure of Invention
The invention aims to provide a water curtain spray head based on electric jet mask processing, which solves the problems of difficult manufacture and difficult positioning of the traditional electric beam cathode spray head, ensures that jet processing can be flexibly adapted to processing workpieces with different mask structures, and increases the flexibility of jet electrolytic processing.
In order to solve the technical problems, the invention provides a water curtain spray head based on electric jet mask processing, which comprises a cylindrical spray head cavity, wherein a discharge-shaped liquid outlet is formed in the outer wall of the bottom of the spray head cavity along the length direction of the spray head cavity, a first liquid inlet is formed in one end of the spray head cavity, a second liquid inlet is formed in the other end of the spray head cavity, and the bottoms of the inner walls of the first liquid inlet and the second liquid inlet are flush with the upper surface of each liquid outlet.
Preferably, the first liquid inlet and the second liquid inlet are opposite to each other.
Preferably, the inner walls of the end parts of the first liquid inlet and the second liquid inlet are provided with internal threads, so that the first liquid inlet and the second liquid inlet are respectively connected with a liquid supply pipe.
Preferably, the length of the nozzle cavity is 2-5 times of the diameter of the first liquid inlet or the second liquid inlet.
Preferably, the liquid outlets are arranged in two rows staggered with each other.
Preferably, the cross section of each liquid outlet consists of two semicircles and rectangles with the same diameter.
Preferably, the semicircle diameter and the rectangular length are 1-10 mm.
The invention provides a water curtain spray head based on electric jet mask processing, which mainly comprises a spray head cavity, a liquid outlet, a first liquid inlet and a second liquid inlet. The liquid outlets are arranged on the outer wall of the bottom of the cylindrical spray head cavity and are used for discharging electrolyte in the spray head cavity, and the liquid outlets are distributed in a row shape, namely, are distributed in a straight line along the axial direction of the spray head cavity so as to form a uniform, continuous and stable water curtain; the first liquid inlet and the second liquid inlet are arranged at two ends of the cavity of the spray head, namely, a mode of water inlet from two ends of the cavity of the spray head is adopted, so that the uniformity of an electrolyte flow field in the cavity of the spray head is ensured; simultaneously, the bottoms of the inner walls of the first liquid inlet and the second liquid inlet are flush with the upper surfaces of the liquid outlets, namely, electrolyte enters the cavity of the spray head from the two liquid inlets in a flowing state, and the electrolyte is ensured to stably and uniformly flow into the cavity of the spray head. When the water curtain spray head is applied, the first liquid inlet and the second liquid inlet are respectively connected with the liquid supply pipe, electrolyte enters the spray head cavity in a flowing state through the first liquid inlet and the second liquid inlet, and the electrolyte flows out through the drainage-shaped liquid outlet, so that a jet flow electrolytic machining water curtain is formed, the jet flow machining can be flexibly adapted to machining workpieces with different mask structures, and the flexibility of the jet flow electrolytic machining is improved. The cylindrical cavity is more beneficial to ensuring the uniformity of a flow field in the spray head cavity, and is convenient for the arrangement of a liquid inlet; the radial continuity of the water curtain can be ensured by the drainage liquid outlet, the water curtain can be uniformly and stably distributed in the axial direction, the pressure requirement of jet electrolysis processing is met, and the uniform, stable and continuous water curtain is ensured. The continuous water curtain is utilized to replace the previous beam current, so that the beam current can be swept to the surface processing area of the anode workpiece in a piece-wise manner, the processing area is enlarged, the processing efficiency is improved, and the electric jet mask processing is better applied to the field of large-scale surface micro-texture manufacturing. Meanwhile, the continuous water curtain replaces the micro nozzle, the defect that the nozzle cannot face a processing area due to the change of a mask structure on an anode workpiece is overcome, the continuous water curtain is formed, the manufacturing of a shaped micro nozzle is avoided, and the processing area is enlarged, so that the formed water curtain can be simultaneously scanned to a large processing area, and the jet electrolytic processing can be flexibly adapted to the change of the mask structure on the anode workpiece.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;
fig. 2 is a cross-sectional view of the water curtain head shown in fig. 1.
Wherein, in fig. 1-2:
the spray nozzle comprises a spray nozzle cavity-1, a first liquid inlet-2, a second liquid inlet-3 and a liquid outlet-4.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, fig. 1 is a schematic overall structure of an embodiment of the present invention.
In a specific embodiment provided by the invention, a water curtain spray head based on electric jet mask processing mainly comprises a spray head cavity 1, a liquid outlet 4, a first liquid inlet 2 and a second liquid inlet 3.
The liquid outlets 4 are arranged on the outer wall of the bottom of the cylindrical spray head cavity 1 and are used for discharging electrolyte in the spray head cavity 1, and the liquid outlets 4 are distributed in a row shape, namely, are distributed in a straight line along the axial direction of the spray head cavity 1 so as to form a uniform, continuous and stable water curtain; the first liquid inlet 2 and the second liquid inlet 3 are arranged at two ends of the nozzle cavity 1, namely, a water inlet mode from two ends of the nozzle cavity 1 is adopted to ensure the uniformity of an electrolyte flow field in the nozzle cavity 1; meanwhile, the bottoms of the inner walls of the first liquid inlet 2 and the second liquid inlet 3 are flush with the upper surfaces of the liquid outlets 4, namely, electrolyte enters the spray head cavity 1 from the two liquid inlets in a flowing state, and the electrolyte is ensured to flow into the spray head cavity 1 stably and uniformly.
Referring to fig. 2, fig. 2 is a cross-sectional view of the water curtain shower head shown in fig. 1.
Specifically, when the water curtain spray head is applied, the first liquid inlet 2 and the second liquid inlet 3 are respectively connected with the liquid supply pipe, electrolyte enters the spray head cavity 1 in a flowing state through the first liquid inlet 2 and the second liquid inlet 3, and the electrolyte flows out through the discharge liquid outlet 4, so that a jet flow electrolytic machining water curtain is formed, the jet flow machining can be flexibly adapted to machining workpieces with different mask structures, and the flexibility of the jet flow electrolytic machining is increased. The cylindrical cavity is more beneficial to ensuring the uniformity of the flow field in the spray head cavity 1, and is convenient for the arrangement of the first liquid inlet 2 and the second liquid inlet 3; the discharge liquid outlet 4 can ensure the radial continuity of the water curtain, ensure that the water curtain is uniformly and stably distributed in the axial direction and meets the pressure requirement of jet electrolysis processing, and ensure that the uniform, stable and continuous water curtain is formed.
In order to optimize the water curtain effect of the water curtain spray head in the embodiment, the first liquid inlet 2 and the second liquid inlet 3 are arranged opposite to each other, namely symmetrically arranged at two ends of the spray head cavity 1. So through the bottom with first inlet 2 and second inlet 3 inner wall all with each liquid outlet 4 upper surface flush mounting mode, make the stable by two inlet trickles of electrolyte advance shower nozzle cavity 1, avoided the electrolyte to produce parabolic form cascade when flowing out from the drainage form liquid outlet 4, lead to the inhomogeneous distribution problem of electrolyte pressure.
Therefore, the length of the nozzle cavity 1 is preferably 2-5 times of the diameter of the first liquid inlet 2 or the second liquid inlet 3, so that the electrolyte flowing in from the two liquid inlets can rapidly fill the whole nozzle cavity 1, and the pressure and uniformity requirements of the electrolyte in the nozzle cavity 1 are ensured.
Further, for convenient installation of the first liquid inlet 2 and the second liquid inlet 3, the inner walls of the first liquid inlet 2 and the second liquid inlet 3 are provided with internal threads, and the internal threads are connected with the external threads of the liquid supply pipe in a matched manner, so that the disassembly and the assembly are convenient.
Specifically, in the electro-jet machining process, electrolyte is directly pressed into the nozzle cavity 1 through the left liquid inlet and the right liquid inlet by high pressure, and is directly sprayed into a to-be-machined area on the surface of an anode workpiece through the water curtain nozzle row-shaped liquid outlet 4, so that the requirements of jet machining are met. The water curtain is used for replacing the electro-hydraulic beam current, the miniature nozzle is not required to be manufactured and installed, and the clamping of the spray head can be completed only by ensuring the tightness of the water curtain spray head through simple connection. Meanwhile, the continuous water curtain is utilized to replace the previous beam current, so that the beam current can be swept to the surface processing area of the anode workpiece in a piece-wise manner, the processing area is enlarged, the processing efficiency is improved, and the electric jet mask processing is better applied to the field of large-scale surface micro-texture manufacturing.
In order to optimize the water curtain effect formed by the liquid outlets 4 in the embodiment, the liquid outlets 4 are arranged in two rows staggered with each other, namely, the liquid outlets in U-shaped rows staggered and tangential from front to back. Because the continuity of the axial structure needs to be ensured, the liquid outlets 4 are arranged in a front-back staggered way, the water curtain formed by the front-back staggered way can be ensured to have enough pressure and length, the processing requirements are met, the processing area is enlarged to the greatest extent, and the processing efficiency is improved. Meanwhile, in order to ensure the pressure and convergence requirements of the beam after passing through the U-shaped structure, the semicircular diameter and the rectangular length in the U-shaped structure are preferably 1-10 mm. Of course, the thickness of the water curtain can be changed by changing the width of the U-shaped structure.
In summary, the water curtain nozzle based on the processing of the electrojet mask provided in this embodiment mainly includes the nozzle cavity 1, the liquid outlet 4, the first liquid inlet 2 and the second liquid inlet 3. The liquid outlets 4 are arranged on the outer wall of the bottom of the cylindrical spray head cavity 1 and are used for discharging electrolyte in the spray head cavity 1, and the liquid outlets 4 are distributed in a row shape, namely, are distributed in a straight line along the axial direction of the spray head cavity 1 so as to form a uniform, continuous and stable water curtain; the first liquid inlet 2 and the second liquid inlet 3 are arranged at two ends of the nozzle cavity 1, namely, a water inlet mode from two ends of the nozzle cavity 1 is adopted to ensure the uniformity of an electrolyte flow field in the nozzle cavity 1; meanwhile, the bottoms of the inner walls of the first liquid inlet 2 and the second liquid inlet 3 are flush with the upper surfaces of the liquid outlets 4, namely, electrolyte enters the spray head cavity 1 from the two liquid inlets in a flowing state, and the electrolyte is ensured to flow into the spray head cavity 1 stably and uniformly. When the water curtain spray head is applied, the first liquid inlet 2 and the second liquid inlet 3 are respectively connected with the liquid supply pipe, electrolyte enters the spray head cavity 1 in a flowing state through the first liquid inlet 2 and the second liquid inlet 3, and the electrolyte flows out through the discharge liquid outlet 4, so that a jet flow electrolytic machining water curtain is formed, the jet flow machining can be flexibly adapted to machining workpieces with different mask structures, and the flexibility of the jet flow electrolytic machining is improved. The cylindrical cavity is more beneficial to ensuring the uniformity of the flow field in the spray head cavity 1, and is convenient for the arrangement of the first liquid inlet 2 and the second liquid inlet 3; the discharge liquid outlet 4 can ensure the radial continuity of the water curtain, ensure that the water curtain is uniformly and stably distributed in the axial direction and meets the pressure requirement of jet electrolysis processing, and ensure that the uniform, stable and continuous water curtain is formed.
Based on the method, the continuous water curtain is utilized to replace single-nozzle beam current by the water curtain nozzle based on the electric jet mask processing, so that jet electrolytic processing can be simultaneously scanned to a large processing area, the requirements that electrolyte jet is opposite to the processing area and uniformly and stably distributed in the processing area are met, and the influence on jet electrolytic processing precision caused by difficult manufacturing and difficult installation of the traditional micro electro-hydraulic beam cathode nozzle is eliminated. Meanwhile, the high-precision micro-texture mask can be manufactured by combining the existing mature pattern transfer and photoetching technology, the defect that the traditional cathode micro-nozzle is difficult to manufacture and install is overcome, and a uniform, stable and continuous water curtain can be formed, so that the processing precision of micro-texture can be greatly improved by using the water curtain nozzle processed based on the electric jet mask for jet electrolytic processing.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. The utility model provides a cascade shower nozzle based on electric jet mask processing, its characterized in that, includes cylinder shower nozzle cavity (1), on the outer wall of shower nozzle cavity (1) bottom, along row form liquid outlet (4) are seted up to shower nozzle cavity (1) length direction, the one end of shower nozzle cavity (1) is equipped with first inlet (2), the other end of shower nozzle cavity (1) is equipped with second inlet (3), first inlet (2) with the bottom of second inlet (3) inner wall all flushes with each liquid outlet (4) upper surface, first inlet (2) with second inlet (3) just set up to and each liquid outlet (4) are two rows of arrangement of crisscross each other.
2. The water curtain nozzle according to claim 1, characterized in that the inner walls of the end parts of the first liquid inlet (2) and the second liquid inlet (3) are provided with internal threads so that the first liquid inlet (2) and the second liquid inlet (3) are respectively connected with a liquid supply pipe.
3. The water curtain nozzle according to claim 1, characterized in that the length of the nozzle cavity (1) is 2-5 times the diameter of the first liquid inlet (2) or the second liquid inlet (3).
4. A water curtain shower head as claimed in claim 1, characterized in that the cross section of each outlet opening (4) consists of two semi-circles and rectangles of the same diameter.
5. The water curtain nozzle of claim 4 wherein said semi-circular diameter and said rectangular length are 1-10 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710481585.7A CN107052485B (en) | 2017-06-22 | 2017-06-22 | Water curtain spray head based on electric jet mask processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710481585.7A CN107052485B (en) | 2017-06-22 | 2017-06-22 | Water curtain spray head based on electric jet mask processing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107052485A CN107052485A (en) | 2017-08-18 |
| CN107052485B true CN107052485B (en) | 2023-07-25 |
Family
ID=59595035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710481585.7A Active CN107052485B (en) | 2017-06-22 | 2017-06-22 | Water curtain spray head based on electric jet mask processing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107052485B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107838508B (en) * | 2017-12-14 | 2023-11-10 | 广东工业大学 | Electrolytic machining device and equipment for inner wall microstructure |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101862870A (en) * | 2010-06-21 | 2010-10-20 | 南京航空航天大学 | Array micro-pit electrolytic machining method and system |
| CN104607734B (en) * | 2014-12-11 | 2017-02-08 | 南京航空航天大学 | Auxiliary anode mask micro electrolytic machining array micro-pit system and method |
| CN204397104U (en) * | 2015-02-02 | 2015-06-17 | 广东工业大学 | Orifice electrode scan-type mask electrolytic machining device |
| CN104907654B (en) * | 2015-07-02 | 2017-11-21 | 常州工学院 | A kind of electrolytic method that Surface Texture is carried out using cellular plastic plate |
| CN106735642A (en) * | 2017-03-15 | 2017-05-31 | 广东工业大学 | A kind of electric jet mask system of processing and its shower nozzle |
| CN206824779U (en) * | 2017-06-22 | 2018-01-02 | 广东工业大学 | A kind of cascade shower nozzle based on the processing of electric jet mask |
-
2017
- 2017-06-22 CN CN201710481585.7A patent/CN107052485B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107052485A (en) | 2017-08-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101633065B (en) | Microscale pulse electrolysis jet processing system and processing method thereof | |
| CN103386521A (en) | Micro-hole electric discharge and electrolytic combined machining multi-channel symmetrical flushing device and method | |
| CN110842307B (en) | Electrochemical machining tool for complex inner wall structure with poor accessibility | |
| CN107052485B (en) | Water curtain spray head based on electric jet mask processing | |
| CN105921832B (en) | Flexible boundling group act on sets jet stream electrochemical machining method and device | |
| CN102179585B (en) | Capillary cathode-based small-conicity micro-hole electrochemical machining device and method | |
| CN103831497B (en) | Serpentine flow path collapsible form group hole electrolytic machining device and processing method | |
| CN102330125B (en) | Array electrode cavity for jet electrodeposition | |
| CN206824779U (en) | A kind of cascade shower nozzle based on the processing of electric jet mask | |
| CN105127526B (en) | Disc-type scanning electrode mask micro-electrolysis discharge machining system and machining method | |
| CN205817003U (en) | Flexible boundling group act on sets jet electrolytic machining device | |
| CN111805025B (en) | Rod-plate combined type electrolytic machining cathode system and machining method thereof | |
| CN105734618B (en) | A kind of complex outline Thin-wall Revolving Part electrocasting method | |
| CN105980696B (en) | Fuel injection measuring equipment and its manufacturing method and fuel injection nozzle | |
| CN103878456B (en) | A kind of harmless electrode for spark machined | |
| CN206550456U (en) | A kind of electric jet mask system of processing and its shower nozzle | |
| CN107470729B (en) | Cylindrical inner wall linear array tube electrode jet electrolytic machining device | |
| CN107695467A (en) | A kind of pressure type circulating jet Electrolyzed Processing micro-electrode array preparation method and device | |
| CN108637411B (en) | Micro-channel electrolytic machining device | |
| CN204138799U (en) | A kind of selection type galvanic anode water pocket | |
| CN204138800U (en) | A kind of integral type point plating appts | |
| CN211256156U (en) | Diffusion furnace air inlet device capable of improving uniformity | |
| CN211162276U (en) | Blind hole electric pulse processing structure | |
| JP4723269B2 (en) | Method for forming back hole of die for forming honeycomb structure | |
| CN106735642A (en) | A kind of electric jet mask system of processing and its shower nozzle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |