CN104858431B - Non-restriction type metal atomization and deposition spray nozzle system - Google Patents
Non-restriction type metal atomization and deposition spray nozzle system Download PDFInfo
- Publication number
- CN104858431B CN104858431B CN201510281101.5A CN201510281101A CN104858431B CN 104858431 B CN104858431 B CN 104858431B CN 201510281101 A CN201510281101 A CN 201510281101A CN 104858431 B CN104858431 B CN 104858431B
- Authority
- CN
- China
- Prior art keywords
- nozzle system
- supersonic
- metal
- cone
- atomization
- 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
Abstract
The invention discloses a non-restriction type metal atomization and deposition spray nozzle system. The system comprises an atomization disc (3). The middle of the atomization disc (3) is provided with a metal liquid flow channel (4). A gas circulation type cavity (2) is formed in the atomization disc (3) on the peripheral side of the metal liquid flow channel (4). A fist gas inlet pipe (1) and a second gas inlet pipe (6) which are communicated with the gas circulation type cavity (2) are formed in the periphery of the atomization disc (3). The bottom of the atomization disc (3) is provided with spray nozzle connectors (5) communicated with the gas circulation type cavity (2). The spray nozzle connectors (5) are evenly arranged along the periphery of the gas circulation type cavity (2), and subsoinc exhaust nozzles and supersonic nozzles are arranged on the spray nozzle connectors (5) at intervals respectively. Gas flow sprayed out by the subsoinc exhaust nozzles and the supersonic nozzles form spray cones to conduct secondary atomization on the metal liquid flow falling into the spray cones freely. By means of the non-restriction type metal atomization and deposition spray nozzle system, molten drops obtained after atomization is conducted are even and wee, and the matrix structure deposited on a base plate is wee and dense.
Description
Technical field
The present invention relates to and a kind of employing high-pressure inert gas spray deposition liquid metals into blank device, specifically
It is a kind of can to make the molten drop after atomization evenly and matrix that is more tiny and then making to deposit on substrate is tiny and fine and close
Unrestricted formula metal atomization deposition nozzle system.
Background technology
Spray deposition technology is taught by the Singer of Si Wangxi universities of Britain proposed in the end of the sixties in last century earliest, specifically
It is that, into various sizes of molten drop, the atomization gas for then quickly being flowed take atomization out of by liquid metal inert gas atomizer
Be well combined close complete fully dense is assembled and be frozen into area, molten drop, by base board cutting, and in flight course on substrate
Blank.Generally spray deposition blank, such as Chinese patent are carried out to the molten metal of free-falling using restraint-type aerosolization nozzle
（2012102915966）A kind of high energy gas atomizer for preparing metal or alloy powder, because it adopts the shape of mozzle
Realizing spray deposition, mozzle made by resistance to material is difficult to bear the erosion of high-temperature liquid metal formula, and General Life is shorter, while its
Use one-level atomization technique, it is difficult to realize the uniform tiny of molten drop in atomizer (atomizing) cone, the matrix of deposition is thick will not
It is close.I.e. existing atomizer is deposited due to the metal atomization that long-time stable difficult to realize is affected by water conservancy diversion tube lifetime, and
The tissue of sedimentary is not thick fine and close.
The content of the invention
The purpose of the present invention is the problem existed for prior art, there is provided a kind of unrestricted formula metal atomization deposition nozzle
System, by the optimization design to nozzle system, make the molten metal stream of free-falling not with any location contacts of nozzle system, it is real
Existing nozzle system is multiple and stably uses for a long time, improves the service life of nozzle system, the molten metal stream of free-falling
Enter to be carried out in the atomizer (atomizing) cone that subsonic gases and supersonic gas are constituted two grades of atomizations realize in atomizer (atomizing) cone molten drop evenly and
It is more tiny, so that the matrix deposited on substrate is tiny and fine and close.
The purpose of the present invention is solved by the following technical programs：
A kind of unrestricted formula metal atomization deposition nozzle system, including atomizing disk, it is characterised in that：In the atomizing disk
Portion is provided with metal fluid course, and gas circulating die cavity is provided with the atomizing disk of metal fluid course the week side of boss, in the circle of atomizing disk
First air inlet pipe and the second air inlet pipe of gas circulating die cavity is communicated with week and gas is communicated with the bottom of atomizing disk
The jet pipe interface of circulation die cavity, jet pipe interface is arranged and is respectively mounted on jet pipe interface and sets along the even circumferential of gas circulating die cavity
Put subsonic effuser and supersonic nozzle, in spaced subsonic effuser and supersonic nozzle spray subsonic flow and
Supersonic airstream constitutes atomizer (atomizing) cone and carries out two grades so as to enter the molten metal stream in atomizer (atomizing) cone to Jing metal fluid course free-fallings
Deposit to after atomization and blank is formed on substrate.
Described subsonic effuser adopts 1/4 inch of H-USS20 of Shanghai Spraying Systems Co., production to spray
Pipe, and supersonic nozzle adopt outlet diameter for Φ 3-5.2mm supersonic nozzle.
The diameter of the molten metal stream of Jing metal fluid course free-fallings is less than the internal diameter of metal fluid course to avoid certainly
Contacted with the inwall of metal fluid course by the molten metal stream for falling.
The internal diameter of described metal fluid course is 25-35mm.
The bottom of the atomizing disk constitutes cone and the cone angle of the cone is 180 ° of-α.
Described atomizing disk is provided with 6-12 jet pipe interface, and constitutes after the axial line extension of whole jet pipe interfaces is intersected
One cone angle is the reverse taper of α, so that the subsonic flow sprayed in Jing subsonic effusers and supersonic nozzle and Supersonic
Fast air-flow constitutes atomizer (atomizing) cone and two grades of atomizations is carried out to the molten metal stream that Jing metal fluid course free-fallings enter in atomizer (atomizing) cone.
The depth of focus H of the subsonic effuser and supersonic nozzle is respectively 250-300mm, and subsonic effuser and supersonic speed
The depth of focus H of jet pipe is in inverse relation for α with cone angle.
Described atomizing disk is made using high temperature resistant stainless steel, and the gas circulating die cavity on atomizing disk, the first air inlet pipe
Damaged with the pipe for reducing gas with the polished process of the second air inlet pipe.
Described supersonic nozzle is made and the polished process of its inner chamber using high temperature resistant stainless steel, and stream enters supersonic nozzle
Gases at high pressure can speed up to 2-2.3 Mach.
Connected using pipe screw thread mode between described supersonic nozzle and jet pipe interface.
The present invention has the following advantages compared to existing technology：
The present invention by the optimization design to nozzle system, make the molten metal stream of free-falling not with any portion of nozzle system
Position contact, realizes nozzle system repeatedly and stably uses for a long time, improves the service life of nozzle system, free-falling
Molten metal stream enters to carry out two grades of atomizations in the atomizer (atomizing) cone that subsonic gases and supersonic gas are constituted and realize molten drop in atomizer (atomizing) cone
It is evenly and more tiny, so that the matrix deposited on substrate is tiny and fine and close.
Description of the drawings
Accompanying drawing 1 is unrestricted formula metal atomization deposition nozzle system structure diagram of the invention；
The metallograph that accompanying drawing 2 is organized for the D2 steel deposit preform after the nozzle system process of the present invention；
The metallograph that accompanying drawing 3 is organized for the T5 high-speed steel deposit preform after the nozzle system process of the present invention；
The metallograph that accompanying drawing 4 is organized for the M3 high-speed steel deposit preform after the nozzle system process of the present invention.
Wherein：1-the first air inlet pipe；2-gas circulating die cavity；3-atomizing disk；4-metal fluid course；5-jet pipe
Interface；6-the second air inlet pipe.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is further illustrated with embodiment.
As shown in Figure 1：A kind of unrestricted formula metal atomization deposition nozzle system, including atomizing disk 3, in atomizing disk 3
Portion is provided with metal fluid course 4, gas circulating die cavity 2 is provided with the atomizing disk 3 of the week side of boss of metal fluid course 4, in atomizing disk 3
Circumference on be communicated with first air inlet pipe 1 and the second air inlet pipe 6 of gas circulating die cavity 2 and be provided with the bottom of atomizing disk 3
The jet pipe interface 5 of connection gas circulating die cavity 2, jet pipe interface 5 is arranged and jet pipe interface along the even circumferential of gas circulating die cavity 2
Installation settings subsonic effuser and supersonic nozzle are respectively separated on 5, wherein subsonic effuser adopts Shanghai Spraying
Systems Co., 1/4 inch of H-USS20 jet pipe of production, and supersonic nozzle adopt outlet diameter for the super of Φ 3-5.2mm
Sonic nozzle, the subsonics that nozzle system of the high-pressure inert gas Jing subsonic effuser and supersonic nozzle is installed is formed after spraying
Fast air-flow and supersonic airstream constitute atomizer (atomizing) cone, so as to enter the molten metal in atomizer (atomizing) cone to the free-falling of Jing metals fluid course 4
Stream is carried out being deposited to after two grades of atomizations and formed on substrate blank；The wherein molten metal stream of the free-falling of Jing metals fluid course 4
Diameter is connected with the molten metal stream for avoiding free-falling less than the internal diameter of metal fluid course 4 with the inwall of metal fluid course 4
Touch, the internal diameter of metal fluid course 4 is 25-35mm so that the turbulence phenomenon of the lower end of metal fluid course 4 is lighter.
In said structure, atomizing disk 3 adopts high temperature resistant stainless steel to make to prevent in high temperature deformation, and atomizing disk 3
The polished process of gas circulating die cavity 2, the first air inlet pipe 1 and the second air inlet pipe 6 is damaged with the pipe for reducing gas；Atomizing disk 3
Bottom constitutes cone and the cone angle of the cone is 180 ° of-α, and in addition atomizing disk 3 is provided with 6-12 jet pipe interface 5, and all sprays
Reverse taper of the cone angle for α is constituted after the axial line extension of interface tube 5 is intersecting, so that Jing subsonic effusers and supersonic speed
The subsonic flow sprayed in jet pipe and supersonic airstream constitute atomizer (atomizing) cone and enter atomizer (atomizing) cone to the free-falling of Jing metals fluid course 4
Interior molten metal stream carries out two grades of atomizations.Above-mentioned supersonic nozzle is made and the polished place of its inner chamber using high temperature resistant stainless steel
Reason, stream enters the gases at high pressure of supersonic nozzle and can speed up to 2-2.3 Mach；And the depth of focus of subsonic effuser and supersonic nozzle
H is respectively 250-300mm, while the depth of focus H of subsonic effuser and supersonic nozzle causes liquid stream for α with cone angle in inverse relation
Atomization and deposition effect it is more preferable.Connected using pipe screw thread mode between supersonic nozzle and jet pipe interface 5 in addition, in order to spray
Installation, dismounting and the maintenance of pipe.
Below by the unrestricted formula metal atomization deposition nozzle system for being provided with 8 jet pipe interfaces 5 present invention is entered to advance
The explanation of one step, 8 jet pipe interfaces 5 be connected with 4 subsonic effusers and 4 supersonic nozzles respectively and subsonic effuser and
Supersonic nozzle interval setting.
Implement row one
A kind of unrestricted formula metal atomization deposition nozzle system as shown in Figure 1, including atomizing disk 3, the and of the first air inlet pipe 1
Second air inlet pipe 6, gas circulating die cavity 2, jet pipe interface 5 and metal fluid course 4, are respectively separated installation on jet pipe interface 5
Upper each four 1/4 inch of H-USS20 jet pipes and the supersonic nozzle that outlet diameter is Φ 3mm, the unrestricted formula metal atomization sinks
In product nozzle system, the depth of focus H of subsonic effuser and supersonic nozzle is all 250 mm, and the internal diameter of metal fluid course 4 is Φ
25mm, wherein atomizing disk and outlet diameter are respectively adopted high temperature resistant stainless steel and make by the supersonic nozzle of Φ 3mm, the first air inlet
The air inlet pipe 6 of pipe 1 and second, gas circulating die cavity 2 and the polished process of supersonic nozzle inner chamber, in spray deposition D2 steel blanks
When, the N of 2Mpa is passed through into unrestricted formula metal atomization deposition nozzle system2Gas, Jing after two grades of atomizations, D2 steel melts in atomizer (atomizing) cone
The average diameter of drop is at 32 μm, and sedimentary matrix is tiny and fine and close, refers to the D2 after the nozzle system shown in accompanying drawing 2 is processed
The metallograph of steel deposit preform tissue.
Implement row two
A kind of unrestricted formula metal atomization deposition nozzle system as shown in Figure 1, structure and the enforcement row one of embodiment two
Difference is that the depth of focus H of the supersonic nozzle for adopting outlet diameter for Φ 4mm, subsonic effuser and supersonic nozzle is all
280 mm, the internal diameter of metal fluid course 4 is Φ 30mm.In spray deposition T5 high-speed steel steel blanks, to unrestricted formula metal
The N of 2.6Mpa is passed through in spray deposition nozzle system2Gas, Jing after two grades of atomizations, T5 high-speed steel molten drop is average straight in atomizer (atomizing) cone
Footpath is at 28 μm, and sedimentary matrix is tiny and fine and close, refers to the T5 high-speed steel deposition after the nozzle system shown in accompanying drawing 3 is processed
The metallograph of base tissue.
Implement row three
A kind of unrestricted formula metal atomization deposition nozzle system as shown in Figure 1, structure and the enforcement row one of embodiment three
Difference is that the depth of focus H of the supersonic nozzle for adopting outlet diameter for Φ 5.2mm, subsonic effuser and supersonic nozzle is all
300 mm, the internal diameter of metal fluid course 4 is Φ 35mm.In spray deposition M3 high-speed steel steel blanks, to unrestricted formula metal
The N of 3.5Mpa is passed through in spray deposition nozzle system2Gas, Jing after two grades of atomizations, M3 high-speed steel molten drop is average straight in atomizer (atomizing) cone
Footpath is at 20 μm, and sedimentary matrix is tiny and fine and close, refers to the M3 high-speed steel deposition after the nozzle system shown in accompanying drawing 4 is processed
The metallograph of base tissue.
The present invention by the optimization design to nozzle system, make the molten metal stream of free-falling not with any portion of nozzle system
Position contact, realizes nozzle system repeatedly and stably uses for a long time, improves the service life of nozzle system, free-falling
Molten metal stream enters to carry out two grades of atomizations in the atomizer (atomizing) cone that subsonic gases and supersonic gas are constituted and realize molten drop in atomizer (atomizing) cone
It is evenly and more tiny, so that the matrix deposited on substrate is tiny and fine and close.
Above example technological thought only to illustrate the invention, it is impossible to which protection scope of the present invention is limited with this, it is every
According to technological thought proposed by the present invention, any change done on the basis of technical scheme, the scope of the present invention is each fallen within
Within；The technology that the present invention is not directed to can be realized by prior art.
Claims (10)
1. a kind of unrestricted formula metal atomization deposition nozzle system, including atomizing disk（3）, it is characterised in that：The atomizing disk（3）
Middle part be provided with metal fluid course（4）, in metal fluid course（4）The atomizing disk of the week side of boss（3）Inside it is provided with gas circulating die cavity
（2）, in atomizing disk（3）Circumference on be communicated with gas circulating die cavity（2）The first air inlet pipe（1）With the second air inlet pipe（6）
And in atomizing disk（3）Bottom be communicated with gas circulating die cavity（2）Jet pipe interface（5）, jet pipe interface（5）Along gas circulating
Die cavity（2）Even circumferential arrangement and jet pipe interface（5）On be respectively mounted setting subsonic effuser and supersonic nozzle, interval sets
The subsonic flow sprayed in the subsonic effuser put and supersonic nozzle and supersonic airstream constitute atomizer (atomizing) cone so as to golden to Jing
Category fluid course（4）Free-falling enters the molten metal stream in atomizer (atomizing) cone to be carried out depositing to and formed on substrate blank after two grades of atomizations.
2. unrestricted formula metal atomization deposition nozzle system according to claim 1, it is characterised in that：Described subsonic speed
Jet pipe adopts Shanghai Spraying Systems Co., 1/4 inch of H-USS20 jet pipe of production, and supersonic nozzle to adopt
The supersonic nozzle of a diameter of Φ 3-5.2mm of mouth.
3. unrestricted formula metal atomization deposition nozzle system according to claim 1, it is characterised in that：Jing molten metals circulate
Road（4）The diameter of the molten metal stream of free-falling is less than metal fluid course（4）Internal diameter avoiding the molten metal of free-falling
Stream and metal fluid course（4）Inwall contact.
4. the unrestricted formula metal atomization deposition nozzle system according to claim 1 or 3, it is characterised in that：Described gold
Category fluid course（4）Internal diameter be 25-35mm.
5. unrestricted formula metal atomization deposition nozzle system according to claim 1, it is characterised in that：Described atomizing disk
（3）It is provided with 6-12 jet pipe interface（5）, and whole jet pipe interfaces（5）Axial line extend it is intersecting after to constitute a cone angle be α
Reverse taper so that in Jing subsonic effusers and supersonic nozzle spray subsonic flow and supersonic airstream constitute mist
Change cone to Jing metal fluid courses（4）Free-falling enters the molten metal stream in atomizer (atomizing) cone carries out two grades of atomizations.
6. unrestricted formula metal atomization deposition nozzle system according to claim 5, it is characterised in that：The atomizing disk
（3）To constitute the cone angle of cone and the cone be 180 ° of-α for bottom.
7. unrestricted formula metal atomization deposition nozzle system according to claim 5, it is characterised in that：The subsonic speed spray
The depth of focus H of pipe and supersonic nozzle is respectively 250-300mm, and the depth of focus H of subsonic effuser and supersonic nozzle is in cone angle
Inverse relation.
8. unrestricted formula metal atomization deposition nozzle system according to claim 1, it is characterised in that：Described atomizing disk
（3）Made using high temperature resistant stainless steel, and atomizing disk（3）On gas circulating die cavity（2）, the first air inlet pipe（1）Enter with second
Tracheae（6）Polished process is damaged with the pipe for reducing gas.
9. unrestricted formula metal atomization deposition nozzle system according to claim 1 and 2, it is characterised in that：Described is super
Sonic nozzle is made and the polished process of its inner chamber using high temperature resistant stainless steel, and stream enters the gases at high pressure of supersonic nozzle can be added
Speed is to 2-2.3 Mach.
10. unrestricted formula metal atomization deposition nozzle system according to claim 9, it is characterised in that：Described Supersonic
Fast jet pipe and jet pipe interface（5）Between connected using pipe screw thread mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510281101.5A CN104858431B (en) | 2015-05-28 | 2015-05-28 | Non-restriction type metal atomization and deposition spray nozzle system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510281101.5A CN104858431B (en) | 2015-05-28 | 2015-05-28 | Non-restriction type metal atomization and deposition spray nozzle system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104858431A CN104858431A (en) | 2015-08-26 |
| CN104858431B true CN104858431B (en) | 2017-05-03 |
Family
ID=53904841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510281101.5A Active CN104858431B (en) | 2015-05-28 | 2015-05-28 | Non-restriction type metal atomization and deposition spray nozzle system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104858431B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6328805A (en) * | 1986-07-21 | 1988-02-06 | Daido Steel Co Ltd | Method for preventing sticking of splash to water or gas spraying nozzle |
| EP1289699B1 (en) * | 2000-06-12 | 2008-04-09 | Bechtel BWXT Idaho, LLC | Rapid solidification processing system for producing molds, dies and related tooling |
| CN102029397A (en) * | 2011-01-26 | 2011-04-27 | 河南理工大学 | Airflow atomizing nozzle device suitable for metal composite atomizer |
| CN102319899A (en) * | 2011-10-13 | 2012-01-18 | 西北工业大学 | A kind of two-stage accelerating solid atomising device |
| CN202297623U (en) * | 2011-10-14 | 2012-07-04 | 无锡市东方环境工程设计研究所有限公司 | Horizontal liquid slag resource micronization recycling device |
| CN103600084A (en) * | 2013-09-12 | 2014-02-26 | 苏州米莫金属科技有限公司 | Powder metallurgy high-pressure water atomization pulverizing device |
| CN204770666U (en) * | 2015-05-28 | 2015-11-18 | 江苏共昌轧辊股份有限公司 | Non - restriction formula metal atomizing deposit nozzle system |
-
2015
- 2015-05-28 CN CN201510281101.5A patent/CN104858431B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6328805A (en) * | 1986-07-21 | 1988-02-06 | Daido Steel Co Ltd | Method for preventing sticking of splash to water or gas spraying nozzle |
| EP1289699B1 (en) * | 2000-06-12 | 2008-04-09 | Bechtel BWXT Idaho, LLC | Rapid solidification processing system for producing molds, dies and related tooling |
| CN102029397A (en) * | 2011-01-26 | 2011-04-27 | 河南理工大学 | Airflow atomizing nozzle device suitable for metal composite atomizer |
| CN102319899A (en) * | 2011-10-13 | 2012-01-18 | 西北工业大学 | A kind of two-stage accelerating solid atomising device |
| CN202297623U (en) * | 2011-10-14 | 2012-07-04 | 无锡市东方环境工程设计研究所有限公司 | Horizontal liquid slag resource micronization recycling device |
| CN103600084A (en) * | 2013-09-12 | 2014-02-26 | 苏州米莫金属科技有限公司 | Powder metallurgy high-pressure water atomization pulverizing device |
| CN204770666U (en) * | 2015-05-28 | 2015-11-18 | 江苏共昌轧辊股份有限公司 | Non - restriction formula metal atomizing deposit nozzle system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104858431A (en) | 2015-08-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103273070B (en) | A kind of adjustable titanium or titanium alloy liquation ultra-fine atomization spray nozzle | |
| CN201807737U (en) | Atomizing nozzle for preparing metal powder | |
| CN201900264U (en) | Unrestricted high-pressure gas atomizing nozzle | |
| CN202639334U (en) | Air and water atomizing nozzle device for preparing superfine metal powder | |
| CN108480652A (en) | It is a kind of to prepare spherical metal powder high efficiency annular distance gas atomizing nozzle | |
| CN104057097A (en) | Dual-ring supersonic atomizer | |
| CN105436509B (en) | A kind of metal atomization bilayer restrictive nozzle with electromagnetic field booster action | |
| CN203330402U (en) | Adjustable titanium and titanium alloy melt superfine atomizing nozzle | |
| CN104858431B (en) | Non-restriction type metal atomization and deposition spray nozzle system | |
| CN102029397B (en) | Airflow atomizing nozzle device suitable for metal composite atomizer | |
| CN207840135U (en) | A kind of open atomizer | |
| CN204770666U (en) | Non - restriction formula metal atomizing deposit nozzle system | |
| CN102837001B (en) | Fine metal powder atomizing spray nozzle with molten metal easily flowing out | |
| CN203075924U (en) | Overflow-jet nozzle type gas-liquid distributor | |
| CN101966589A (en) | Composite atomizer for manufacturing gas atomization quick-coagulation spherical superfine metal powder | |
| CN107107081A (en) | Gas-liquid mixed distributor, shell-and-tube heat exchanger | |
| JP2009120913A (en) | Film forming nozzle, film forming method and film forming member | |
| CN215544920U (en) | Gas atomization powder making leakage nozzle not easy to block package | |
| CN202238418U (en) | Novel nozzle of electric arc spray gun | |
| CN111687422A (en) | Air atomization spray disk capable of simultaneously adjusting aperture of multiple nozzles through air pressure control | |
| CN102319899A (en) | A kind of two-stage accelerating solid atomising device | |
| CN203621500U (en) | Atomizer for preparing fine metal powder | |
| CN104668114A (en) | Spiral nozzle, spiral air spraying device and spiral air spraying method | |
| CN103658667B (en) | One prepares fine metal powder body nebulizer | |
| CN210287470U (en) | Supersonic plasma spraying spray pipe capable of adjusting inner powder feeding position |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201029 Address after: 214200 Nan Tang Village, Xinjian Town, Yixing City, Wuxi, Jiangsu Patentee after: Yixing Hechang roller Co., Ltd Address before: 214253, No. 1, Chang Chang Road, Xinjian Town, Wuxi, Jiangsu, Yixing Patentee before: JIANGSU GONGCHANG ROLL JOINT-STOCK Co.,Ltd. |
|
| TR01 | Transfer of patent right |