CN208643532U - A kind of aluminium alloy anode oxide film dry laser cleaning equipment - Google Patents
A kind of aluminium alloy anode oxide film dry laser cleaning equipment Download PDFInfo
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- CN208643532U CN208643532U CN201721470429.2U CN201721470429U CN208643532U CN 208643532 U CN208643532 U CN 208643532U CN 201721470429 U CN201721470429 U CN 201721470429U CN 208643532 U CN208643532 U CN 208643532U
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- 238000004140 cleaning Methods 0.000 title claims abstract description 137
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 58
- 230000000694 effects Effects 0.000 claims abstract description 15
- 239000000428 dust Substances 0.000 claims description 32
- 239000000779 smoke Substances 0.000 claims description 12
- 238000007493 shaping process Methods 0.000 claims description 8
- 239000004411 aluminium Substances 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- 238000005555 metalworking Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 25
- 230000001681 protective effect Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 9
- 230000003647 oxidation Effects 0.000 description 7
- 238000007254 oxidation reaction Methods 0.000 description 7
- 239000002245 particle Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000003517 fume Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000010407 anodic oxide Substances 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- Laser Beam Processing (AREA)
- Cleaning In General (AREA)
Abstract
The utility model discloses a kind of aluminium alloy anode oxide film dry laser cleaning equipment, including cleaning platform and laser cleaner, laser cleaner includes laser cleaning host and the light source emission system that is arranged on laser cleaning host, laser cleaning host is integrated machine frame posture, light source emission system includes control system and laser emitter, for control system for controlling laser emitter, the laser in laser emitter is pulse laser；Cleaning platform is located at the light-emitting surface bottom end of laser cleaner, and workbench is for placing Al alloy parts to be processed.The cleaning equipment of the utility model projects linear beam spot using laser cleaning head and cleans to Al alloy parts anode oxide film, guarantee cleaning effect, be not necessarily to cleaning solution to solve the above-mentioned problems of the prior art, is a kind of environmentally protective cleaning program；The utility model also provides a kind of method for the aluminium alloy anode oxide film dry laser cleaning that cleaning efficiency is high, cleaning effect is good.
Description
Technical field
The utility model relates to aluminium alloy anode oxide film laser cleaning technique fields, more particularly to a kind of aluminium alloy sun
Pole oxidation film dry laser cleaning equipment.
Background technique
Al alloy parts generally generate anode oxide film using the method for anodic oxidation after fabrication, improve corrosion resistance,
Facilitate storage.But when carrying out welding procedure to Al alloy parts, presence meeting of anode oxide film so that weld seam generation stomata,
The different degrees of defect such as slag inclusion, so needing first to remove the anode oxide film of workpiece surface.Traditional removing method (is manually beaten
Mill), there is a problem of that cleaning efficiency is low, matrix is impaired and dust and particle contamination it is serious, cleaning effect is poor, after cleaning
Waste cannot be discharged in time, will cause the pollution to human body or environment.
Utility model content
It is above-mentioned to solve the purpose of the utility model is to provide a kind of aluminium alloy anode oxide film dry laser cleaning equipment
Problem of the existing technology projects linear beam spot using laser cleaning head and cleans to Al alloy parts anode oxide film,
Guarantee cleaning effect, cleaning process is contactless cleaning, high degree of automation；It is a kind of environmentally protective without cleaning solution
Cleaning program.
To achieve the above object, the utility model provides following scheme: the utility model provides a kind of aluminum alloy anode
Oxidation film dry laser cleaning equipment, including cleaning platform and laser cleaner, the laser cleaner include that laser is clear
The light source emission system washing host and being arranged on the laser cleaning host, the laser cleaning host are integrated machine frame
Formula, the light source emission system include control system and laser emitter, and the control system is used for the laser emitter
It is controlled, the laser in the laser emitter is pulse laser；The cleaning platform is located at laser cleaning dress
The light-emitting surface bottom end set, the workbench is for placing Al alloy parts to be processed.
Optionally, the laser emitter includes the collimation isolator for connecting and setting gradually with the control system and swashs
Light shaping device.
Optionally, the laser emitter further includes having the X scanner and Y scan device being electrically connected with the control system,
Laser is after the collimation isolator and laser shaping device effect by the X scanner and Y scan device.
Optionally, the laser emitter further includes lens, and the lens are located at the end of the X scanner and Y scan device
End, the lens are F-theta lens.
Optionally, the laser cleaning head in the laser is built-in with galvanometer system.
Optionally, the laser is nanosecond pulse laser.
Optionally, the cleaning equipment further includes dust exhaust apparatus, and the dust exhaust apparatus includes smoke purifier and dust suction bamboo
Al alloy parts to be processed described in section pipe, the smoke purifier and dust suction ring Guan Junyu are disposed adjacent.
Optionally, the position to be cleaned of the dust suction ring pipe and Al alloy parts angle setting at 45 °.
The utility model also provides a kind of method of aluminium alloy anode oxide film dry laser cleaning, the cleaning method application
In above-mentioned aluminium alloy anode oxide film dry laser cleaning equipment, cleaning method the following steps are included:
(1) Al alloy parts are fixed on cleaning platform, laser cleaner is moved to operating position, adjusts dust suction
The position of ring pipe and smoke purifier, so that dust suction ring pipe and position to be cleaned angle at 45 °；
(2) after completing the inspection of equipment early period, the position of laser emitter is adjusted, guarantees the Stable Length of focal length；
(3) technological parameter is set by control system, and utilizes Diode laser technology, so that laser beam is at the incidence of the angle δ；
(4) the dust suction ring pipe and smoke purifier are opened, the galvanometer system of the laser emitter is started to work, swashed
Optical transmitting set starting, cleans the anode oxide film of Al alloy parts；
(5) after laser cleaning completes predetermined wash number, laser emitter is closed, closes dust suction ring pipe and fume cleaning
Device, laser cleaning work stop.
(6) cleaning after the completion of observation cleaning after as a result, repeating the step according to the surface state after cleaning
(3) process for arriving step (5), completes the cleaning of aluminium alloy anode oxide film.
Optionally, the laser beam is 10 °≤δ≤30 ° at the incidence of the angle δ, the value range of δ.
The utility model achieves following technical effect compared with the existing technology:
1, cleaning efficiency is high, cleaning effect is good.The utility model is dry laser cleaning, and principle is to utilize pulse laser beam
Irradiation is so that workpiece surface anodic oxide, and particle absorption laser energy directly distils or instant vaporization evaporation, use hundred are received
Second grade optical fiber laser, has higher cleaning efficiency and better cleaning effect；The utility model uses Diode laser technology, should
Technology, which treats laser, allows to have certain difference in height (about 1cm) when cleaning surface is cleaned, can be to same end face not
It cleans, improves work efficiency simultaneously with height or to different end faces.
2, save the cost.The utility model cleaning efficiency is higher, surface clean better quality, and table is still attached to after cleaning
The particle in face is seldom, and quantity can be ignored, and does not need to introduce air compressor, has saved the device space and cost.
3, have a wide range of application.The utility model uses optical fiber laser, and activity is big, good portability, occupied space
Small, maintenance cost is low, can clean complex part, and cleaning field is wide.
4, environmental pollution is small.The utility model use dust suction ring pipe and smoke purifier, removal cleaning granular residue and
Dust pollution is absorbed, the air of purification is discharged after filtering, environment and human body are damaged small.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description is only the utility model
Some embodiments for those of ordinary skill in the art without any creative labor, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the structural schematic diagram of aluminium alloy anode oxide film dry laser cleaning equipment in the utility model；
Fig. 2 is aluminium alloy anode oxide film dry laser cleaning overall schematic；
Fig. 3 is Al alloy parts Diode laser technical role schematic diagram in position to be cleaned；
Fig. 4 is Al alloy parts anode oxide film laser cleaning flow chart；
Wherein, 1 control system；2 collimation isolators；3 laser shaping devices；4Y scanner；5X scanner；6 lens；7 cleanings
Platform；8 dust exhaust apparatuses；9 Al alloy parts to be processed；10 laser beams.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
It is above-mentioned to solve the purpose of the utility model is to provide a kind of aluminium alloy anode oxide film dry laser cleaning equipment
Problem of the existing technology projects linear beam spot using laser cleaning head and cleans to Al alloy parts anode oxide film,
Guarantee cleaning effect, cleaning process is contactless cleaning, high degree of automation；It is a kind of environmentally protective without cleaning solution
Cleaning program.
Aluminium alloy anode oxide film dry laser cleaning equipment provided by the utility model, including cleaning platform and laser it is clear
Cleaning device, laser cleaner include laser cleaning host and the light source emission system that is arranged on laser cleaning host, laser
Cleaning host is integrated machine frame posture, and light source emission system includes control system and laser emitter, and control system is used for sharp
Optical transmitting set is controlled, and the laser in laser emitter is pulse laser；Cleaning platform is located at laser cleaner
Light-emitting surface bottom end, workbench is for placing Al alloy parts to be processed.
Al alloy parts to be processed are fixed on cleaning platform, laser cleaner is then moved to working position
It sets, the position of light source emission system is adjusted, and the light source in laser emitter is adjusted by control system, on cleaning platform
Al alloy parts to be processed are cleaned.
To keep the above objects, features, and advantages of the utility model more obvious and easy to understand, with reference to the accompanying drawing and have
Body embodiment is described in further detail the utility model.
Please refer to Fig. 1-4, wherein Fig. 1 is aluminium alloy anode oxide film dry laser cleaning equipment in the utility model
Structural schematic diagram；Fig. 2 is aluminium alloy anode oxide film dry laser cleaning overall schematic；Fig. 3 is that Al alloy parts are to be cleaned
Position Diode laser technical role schematic diagram；Fig. 4 is Al alloy parts anode oxide film laser cleaning flow chart.
As shown in Figs 1-4, the utility model provides a kind of aluminium alloy anode oxide film dry laser cleaning equipment, including clear
Wash platform 7 and laser cleaner, laser cleaner includes laser cleaning host and the light that is arranged on laser cleaning host
Source emission system, laser cleaning host are integrated machine frame posture, and light source emission system includes control system 1 and laser emitter,
For control system 1 for controlling laser emitter, the laser in laser emitter is pulse laser；Cleaning platform 7
Positioned at the light-emitting surface bottom end of laser cleaner, workbench is for placing Al alloy parts 9 to be processed.
Laser emitter include the collimation isolator 2 for connecting and setting gradually with control system 1 and laser shaping device 3, with
By X after the X scanner 5 and Y scan device 4 that control system 1 is electrically connected, the collimated isolator 2 of laser and the effect of laser shaping device 3
Scanner 5 and Y scan device 4 further include lens 6, which selects F-theta lens.Collimation isolation is controlled by control system 1
Device 2 becomes a hot spot by laser shaping device 3 after light out, then becomes two-dimensional face after Y scan device 4 and X scanner 5
Light beam reaches workpiece surface after F-theta lens and becomes linear light spot, and laser beam 10 carries out laser cleaning to workpiece surface,
And it configures the dust pollution that dust collecting system is completed in cleaning process and collects.
Laser in the utility model is nanosecond pulse laser, and average laser power is 30W~1000W, adjustable
Pulsewidth is 100~300ns, and laser repetition rate is 10~1000kHz, and laser spot diameter is 0.03mm~0.1mm, pulse energy
Amount is 0.5~100mJ.
Galvanometer system built in laser cleaning head, by adjusting Gaussian spot size and arrangement, adjustment line spacing guarantees hot spot
Overlapping rate be 0.5~0.7.Assume that x wire spot diameter is d1, vertical line spot diameter is d2, lateral linear light spot diameter
For d3, overlapping rate ε1、ε2Meeting condition is d1=ε1d3, d2=ε2d3, ε1、ε2∈(0.5,0.7)。
Cleaning equipment further includes dust exhaust apparatus 8, and dust exhaust apparatus 8 includes smoke purifier and dust suction ring pipe, fume cleaning
Device and dust suction ring Guan Junyu Al alloy parts 9 to be processed are disposed adjacent.Dust suction ring pipe and Al alloy parts it is to be cleaned
Position angle setting at 45 °.The integrated machine frame of laser cleaning host is aluminium alloy, is generated when dust suction ring light is for removing cleaning
Granular residue, smoke purifier collects dust and purified treatment.
The utility model also provides a kind of method of aluminium alloy anode oxide film dry laser cleaning, the cleaning method application
In above-mentioned aluminium alloy anode oxide film dry laser cleaning equipment, cleaning method the following steps are included:
(1) Al alloy parts are fixed on cleaning platform 7, laser cleaner are moved to operating position, adjustment is inhaled
The position of dirt ring pipe and smoke purifier makes dust suction ring pipe and position to be cleaned angle at 45 ° under normal conditions；
(2) after completing the inspection of equipment early period, the position of laser emitter is adjusted, guarantees the Stable Length of focal length；
(3) technological parameter is set by control system 1, it is 30W~500W that mean power, which is set separately, and adjustable-width is
100~300ns, laser repetition rate are 10~1000KHz, and laser spot diameter is 0.03mm~0.1mm, and pulse energy is
0.5~100mJ, and Diode laser technology is utilized, so that laser beam 10 is at the incidence of δ (10 °≤δ≤30 °) angle；
(4) the dust suction ring pipe and smoke purifier are opened, the galvanometer system of laser emitter is started to work, laser hair
Emitter starting, cleans the anode oxide film of Al alloy parts；
(5) after laser cleaning completes predetermined wash number, laser emitter is closed, closes dust suction ring pipe and fume cleaning
Device, laser cleaning work stop.
(6) cleaning after the completion of observation cleaning after as a result, repeating step (3) according to the surface state after cleaning and arriving
The process of step (5), completes the cleaning of aluminium alloy anode oxide film.
(7) step (1)~(6) completion is repeated to the anodic oxidation Membrane cleaning of next Al alloy parts 9 to be processed.
During laser cleaning, because workpiece surface has certain out-of-flatness after processing, there is fluctuating in microstructure,
So laser beam 10 uses angle incidence δ (10 °≤δ≤30 °), which, which treat laser, to wash using Diode laser technology
Allow that there is certain difference in height (about 1cm) when face is cleaned, it can different height to same end face or to different end faces
It is cleaned simultaneously.
Based on above-mentioned aluminium alloy anode oxide film dry laser cleaning equipment and cleaning method, work in the process of cleaning
Skill are as follows:
Due to using anode oxidation method generate anodic oxidation film thickness about in the micron-scale more than, according to workpiece Shangyang
The difference of pole oxide thickness obtains better cleaning effect by selecting different technological parameters, specific as follows:
1, when anode oxide film is with a thickness of 1~15 μm, laser power selects 100~250W, and pulsewidth selects 100~300ns,
Cleaning speed selects 2~3m/s.
2, when anode oxide film is with a thickness of 15~30 μm, laser power 250~400W of selection, pulsewidth selection 100~
300ns, cleaning speed select 1.5~2.5m/s.
3, when anode oxide film is with a thickness of 30 μm or more, laser power 400~1000W of selection, pulsewidth selection 100~
300ns, cleaning speed select 0.5~2m/s.
The method of aluminium alloy anode oxide film cleaning provided by the utility model, principle are irradiated using pulse laser beam 10
So that workpiece surface anodic oxide, particle absorption laser energy directly distils or instant vaporization evaporation.The utility model purport
Solving the existing cleaning effect of conventional method (manual polishing) used by existing way removal positive pole oxidation film on aluminum alloy surface
Rate is low, matrix is impaired and dust and the serious problem of particle contamination.It is effectively removed using dust collecting system and smoke purifier
It cleans residue and absorbs dust, the air of purification is discharged after filtering, it is right when guaranteeing that laser cleaning machine uses and after use
Human body and environmentally friendly.Fig. 2 centre circle shows that part is cleaning area Local map.
It should be noted that aluminium alloy anode oxide film dry laser cleaning equipment and cleaning method in the utility model
Technical solution do not limit to, can also be following manner:
It 1, can be using other laser cleaning methods, such as laser wet-cleaned, laser+inert gas purge etc., although answering
Range is wide not as good as dry laser cleaning, effect difference, but reasonable processing parameters and selects corollary equipment, energy
Cleaning is effectively completed to a certain extent；
2, particle, such as thermal expansion, vibration wave and light pressure can be removed using the dry laser cleaning of other action principles；
3, other lasers and laser type can be changed；
4, laser cleaning sequence of steps can do flexible adjustment；
5, laser cleaning technological parameter can do other combinations matches；
The setting of the related data and associated shape mentioned in the utility model, can also according to actual process requirements into
The change of row adaptability, it is within the protection scope of the present utility model.
Specific case is applied in the utility model to be expounded the principles of the present invention and embodiment, it is above
The explanation of embodiment is merely used to help understand the method and its core concept of the utility model；Meanwhile for the one of this field
As technical staff, based on the idea of the present invention, there will be changes in the specific implementation manner and application range.To sum up
Described, the content of the present specification should not be construed as a limitation of the present invention.
Claims (5)
1. a kind of aluminium alloy anode oxide film dry laser cleaning equipment, it is characterised in that: including cleaning platform and laser cleaning
Device, the laser cleaner include laser cleaning host and the light source being arranged on laser cleaning host transmitting system
System, the laser cleaning host are integrated machine frame posture, and the light source emission system includes control system and laser emitter, institute
Control system is stated for controlling the laser emitter, the laser in the laser emitter is pulse laser；
The cleaning platform is located at the light-emitting surface bottom end of the laser cleaner, and the cleaning platform is used to place aluminium to be processed and closes
Metal working part；The laser emitter includes the collimation isolator and laser shaping for connecting and setting gradually with the control system
Device；The laser emitter further includes having the X scanner and Y scan device being electrically connected with the control system, and laser is through the standard
By the X scanner and Y scan device after straight isolator and laser shaping device effect；The laser emitter further includes
Mirror, the lens are located at the end of the X scanner and Y scan device, and the lens are F-theta lens.
2. aluminium alloy anode oxide film dry laser cleaning equipment according to claim 1, it is characterised in that: the laser
Galvanometer system is built-in in the laser cleaning head of device.
3. aluminium alloy anode oxide film dry laser cleaning equipment according to claim 1, it is characterised in that: the laser
Device is nanosecond pulse laser.
4. aluminium alloy anode oxide film dry laser cleaning equipment according to claim 1, it is characterised in that: the cleaning
Equipment further includes dust exhaust apparatus, and the dust exhaust apparatus includes smoke purifier and dust suction ring pipe, the smoke purifier and suction
Al alloy parts to be processed described in dirt ring Guan Junyu are disposed adjacent.
5. aluminium alloy anode oxide film dry laser cleaning equipment according to claim 4, it is characterised in that: the dust suction
The angle setting at 45 ° of the position to be cleaned of ring pipe and Al alloy parts.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721470429.2U CN208643532U (en) | 2017-11-07 | 2017-11-07 | A kind of aluminium alloy anode oxide film dry laser cleaning equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721470429.2U CN208643532U (en) | 2017-11-07 | 2017-11-07 | A kind of aluminium alloy anode oxide film dry laser cleaning equipment |
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| Publication Number | Publication Date |
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| CN208643532U true CN208643532U (en) | 2019-03-26 |
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| CN201721470429.2U Active CN208643532U (en) | 2017-11-07 | 2017-11-07 | A kind of aluminium alloy anode oxide film dry laser cleaning equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112475505A (en) * | 2020-11-24 | 2021-03-12 | 爱发科电子材料（苏州）有限公司 | Welding structure and welding method for target and back plate |
| CN114574924A (en) * | 2022-03-30 | 2022-06-03 | 西安优耐特容器制造有限公司 | Integrated clean anodic oxidation method |
| CN115336944A (en) * | 2022-08-11 | 2022-11-15 | 浙江大学 | Laser self-adaptive cleaning device and method for glass material surface |
-
2017
- 2017-11-07 CN CN201721470429.2U patent/CN208643532U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112475505A (en) * | 2020-11-24 | 2021-03-12 | 爱发科电子材料（苏州）有限公司 | Welding structure and welding method for target and back plate |
| CN114574924A (en) * | 2022-03-30 | 2022-06-03 | 西安优耐特容器制造有限公司 | Integrated clean anodic oxidation method |
| CN115336944A (en) * | 2022-08-11 | 2022-11-15 | 浙江大学 | Laser self-adaptive cleaning device and method for glass material surface |
| CN115336944B (en) * | 2022-08-11 | 2024-04-09 | 浙江大学 | Laser self-adaptive cleaning device and method for glass material surface |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A kind of laser dry cleaning equipment for aluminum alloy anodic oxide film Effective date of registration: 20220920 Granted publication date: 20190326 Pledgee: Agricultural Bank of China Limited Hubei pilot Free Trade Zone Wuhan Area Branch Pledgor: WUHAN XIANGMING LASER TECHNOLOGY CO.,LTD. Registration number: Y2022420000301 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20231031 Granted publication date: 20190326 Pledgee: Agricultural Bank of China Limited Hubei pilot Free Trade Zone Wuhan Area Branch Pledgor: WUHAN XIANGMING LASER TECHNOLOGY CO.,LTD. Registration number: Y2022420000301 |