CN115070340A - Overlaying device for offline repair of grinding roller of coal mill - Google Patents
Overlaying device for offline repair of grinding roller of coal mill Download PDFInfo
- Publication number
- CN115070340A CN115070340A CN202210657854.1A CN202210657854A CN115070340A CN 115070340 A CN115070340 A CN 115070340A CN 202210657854 A CN202210657854 A CN 202210657854A CN 115070340 A CN115070340 A CN 115070340A
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- Prior art keywords
- grinding roller
- movable column
- column
- frame
- polishing disc
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- 239000003245 coal Substances 0.000 title claims abstract description 27
- 238000003466 welding Methods 0.000 claims abstract description 77
- 238000005498 polishing Methods 0.000 claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000007921 spray Substances 0.000 claims abstract description 15
- 238000004140 cleaning Methods 0.000 claims abstract description 10
- 239000002893 slag Substances 0.000 abstract description 25
- 230000003746 surface roughness Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 8
- 239000000843 powder Substances 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention discloses a surfacing device for off-line repair of a grinding roller of a coal mill, which relates to the technical field of grinding roller repair and comprises a base and a frame, wherein a cleaning assembly is arranged in the frame and comprises a hot air spray nozzle, a linkage column is arranged in the frame, a movable column penetrates through the linkage column, a torsion spring is connected to the movable column, a hot water spray nozzle is connected to the movable column, a hose is connected to the hot water spray nozzle, and a polishing disc penetrates through the movable column. According to the invention, through the arrangement of the cleaning assembly, after the hydraulic cylinder is started, the output end pushes the linkage column, the movable column, the hot water spray nozzle and the polishing disc to move towards the grinding roller through the piston rod, and the movable column is pressed to drive the polishing disc, the second motor and the hot water spray nozzle to rotate on the linkage column along with the continuous movement of the polishing disc and the contact with the grinding roller, so that the polishing disc corresponds to the inclined surface on the grinding roller, the welding slag on the surface of a welding layer is conveniently removed, the influence on the service life of the grinding roller caused by the fact that a new welding layer is covered on the welding slag subsequently is avoided, and meanwhile, the surface roughness is reduced by polishing the welding layer.
Description
Technical Field
The invention relates to the technical field of grinding roller repair, in particular to a overlaying welding device for off-line repair of a grinding roller of a coal mill.
Background
The thermal power plant mainly depends on fuels such as coal, natural gas, fuel oil and the like to boil and vaporize water into steam, then the saturated steam pushes a turbine of a steam turbine to rotate to match with a generator set to generate electric quantity, the coal is generally large in size after being purchased, so that a coal mill is needed, the coal mill is a machine for crushing and grinding coal blocks into coal powder, and the coal mill is an important auxiliary device of a coal powder furnace.
Part coal pulverizer relies on the grinding roller to grind tiny coal cinder into the powder when the during operation, and its surface wear is great easy damage after the grinding roller uses for a long time, consequently need pull down the grinding roller from the coal pulverizer and restore, restores the grinding roller surface through the automatic or the manual surfacing welding of staff at the surface of grinding roller of welder on the surfacing welding device usually.
When the grinding roller is repaired by the surfacing device for offline repair of the grinding roller of the existing coal mill, a small amount of impurities such as coal dust and the like can be remained in some recesses on the surface of the grinding roller, which cannot be cleaned completely, and the impurities are influenced by high temperature during welding to start combustion, so that part of structures in a welding layer formed by surfacing are dispersed to form slag, namely commonly-called welding slag, or a small amount of welding slag is generated on the surface of the welding layer due to overlarge current of a welding gun or the fact that the welding rod is affected by moisture and other various reasons, and the adhesion between the welding slag structure and a subsequent welding layer is poor at the same time, so that the service life of the grinding roller after the grinding roller is repaired by the surfacing device is influenced to a certain degree.
Disclosure of Invention
Based on the technical problem, the invention aims to provide a surfacing device for off-line repair of a grinding roller of a coal mill, so as to solve the technical problem that the formation of welding slag affects the service life of the subsequent grinding roller.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a coal pulverizer grinding roller off-line is restoreed and is used build-up welding device, includes base and frame, be provided with the clearance subassembly in the frame, the clearance subassembly includes hot air nozzle, be provided with the linkage post in the frame, it has movable post to run through on the linkage post, be connected with the torsional spring on the activity post, be connected with hot water shower nozzle on the activity post, be connected with the hose on the hot water shower nozzle, it has the mill of polishing to run through on the activity post.
Through adopting above-mentioned technical scheme, wash through hot water shower nozzle and get rid of the burr and the welding slag piece that produce after polishing to the welding layer, simultaneously because the grinding roller needs preheat to more than 80 ℃ before the build-up welding, consequently adopt the hot water more than 80 ℃ to wash the heat that the welding layer surface can avoid on the grinding roller to be taken away by the water, later get rid of the water stain that remains in the welding layer surface through hot air shower nozzle blowout high pressure hot air flow and produce more welding slags by the water stain influence when avoiding follow-up build-up welding.
Furthermore, the frame is located the base, install the switch board on the frame, be connected with two backing rolls on the base, be connected with the grinding roller on the backing roll.
Through adopting above-mentioned technical scheme, the staff opens overlaying head, first motor, pneumatic cylinder and second motor through the switch board, and output drive anchor clamps are rotatory after first motor starts and make the grinding roller rotatory, and the overlaying head makes the surface of grinding roller form the welding layer at the surfacing welding of grinding roller after starting.
Further, the grinding roller is internally connected with a clamp, and a first motor for driving the clamp to rotate is mounted on the base.
Through adopting above-mentioned technical scheme, the staff will wait that prosthetic grinding roller installs on anchor clamps, and later the staff passes through the shaft coupling and installs anchor clamps on first motor, and the grinding roller is placed on two backing rolls simultaneously.
Furthermore, a support is connected to the base, and a surfacing head used for repairing the grinding roller is installed on the support.
By adopting the technical scheme, the grinding roller to be repaired is installed on the clamp by a worker, then the clamp is installed on the first motor by the worker through the coupler, the output end drives the clamp to rotate after the first motor is started, so that the grinding roller rotates, and the surface of the grinding roller forms a welding layer by surfacing on the surface of the grinding roller after the surfacing head is started.
Furthermore, a hydraulic cylinder for driving the linkage column to move is installed on the frame, and the linkage column is movably connected with the frame.
Through adopting above-mentioned technical scheme, the output promotes linkage post, activity post, hot water shower nozzle and the dish of polishing to the grinding roller direction through the piston rod after the pneumatic cylinder starts and removes, thereby along with the dish of polishing continuously moves and makes the activity post receive pressure and drive the dish of polishing, second motor and hot water shower nozzle rotate on linkage post with the grinding roller contact to it is corresponding to make the inclined plane on the dish of polishing and the grinding roller.
Furthermore, a second motor for driving the polishing disc to rotate is mounted on the movable column, and the polishing disc is movably connected with the movable column.
Through adopting above-mentioned technical scheme, the rotatory influence that makes the welding slag receive power of output drive polishing disc drops in second motor start-up back to be convenient for clear up the welding slag automatically, the rotatory also can polish the reduction surface roughness of welding layer to the welding layer of polishing disc simultaneously, reduce the grinding roller in the wearing and tearing of during operation welding layer.
Furthermore, the section of the top of the movable column is T-shaped, and the movable column is movably connected with the linkage column.
Through adopting above-mentioned technical scheme, thereby make the movable post receive pressure and drive the mill dish, second motor and hot water shower nozzle and rotate on the linkage post along with the mill dish continuously removes and the grinding roller contact to make the mill dish correspond with the inclined plane on the grinding roller.
Further, anchor clamps and grinding roller looks adaptation, just grinding roller and anchor clamps swing joint.
Through adopting above-mentioned technical scheme, the staff will wait that prosthetic grinding roller installs on anchor clamps, and later the staff passes through the shaft coupling and installs anchor clamps on first motor, and the grinding roller is placed on two backing rolls simultaneously.
In summary, the invention mainly has the following beneficial effects:
1. according to the invention, through the arrangement of the cleaning assembly, after the hydraulic cylinder is started, the output end pushes the linkage column, the movable column, the hot water spray nozzle and the polishing disc to move towards the direction of the grinding roller through the piston rod, the movable column is in contact with the grinding roller along with the continuous movement of the polishing disc, so that the movable column is pressed to drive the polishing disc, the second motor and the hot water spray nozzle to rotate on the linkage column, so that the polishing disc corresponds to the inclined surface on the grinding roller, meanwhile, the movable column rotates to compress the torsion spring, the polishing disc is automatically subjected to pressure to adjust the angle so as to be convenient for adapting to grinding rollers with different sizes and gradients, after the second motor is started, the output end drives the polishing disc to rotate so that welding slag is broken and dropped under the influence of force, thereby being convenient for automatically cleaning welding slag, meanwhile, the rotation of the polishing disc can also polish the welding layer to reduce the surface roughness of the welding layer, reduce the abrasion of the welding layer during the working of the grinding roller, and then the hot water spray nozzle washes the welding layer to remove burrs and welding slag chips generated after polishing, simultaneously because the grinding roller need preheat to more than 80 ℃ before the build-up welding, consequently adopt the hot water of more than 80 ℃ to wash the welding layer surface and can avoid the heat on the grinding roller to be walked by the water, later get rid of the remaining water stain in welding layer surface through hot air shower nozzle blowout high pressure hot air current and receive water stain influence when avoiding follow-up build-up welding and produce more welding slags, conveniently get rid of welding layer surface welding slag, avoid follow-up cover new welding layer on welding slag and lead to grinding roller life to receive the influence, reduce roughness of surface to the welding layer is polished simultaneously.
Drawings
FIG. 1 is a schematic diagram of the apparatus of the present invention;
FIG. 2 is a schematic cross-sectional view of the apparatus of the present invention;
FIG. 3 is a schematic view of a linkage column of the present invention;
fig. 4 is a schematic cross-sectional view of the movable column of the present invention.
In the figure: 1. a base; 2. a frame; 3. a control cabinet; 4. a support; 5. a first motor; 6. a clamp; 7. a support roller; 8. grinding the roller; 9. cleaning the assembly; 901. a hot air shower nozzle; 902. a hydraulic cylinder; 903. a linkage column; 904. a movable post; 905. a second motor; 906. grinding disc; 907. a hot water spray head; 908. a hose; 909. a torsion spring; 10. and (5) stacking the welding heads.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
The following describes an embodiment of the present invention based on its overall structure.
A build-up welding device for off-line repair of a grinding roller of a coal mill comprises a base 1 and a frame 2, wherein a cleaning assembly 9 is arranged in the frame 2, as shown in figures 1, 2, 3 and 4.
Specifically, clearance subassembly 9 includes hot blast blowhead 901, be provided with linkage post 903 in the frame 2, linkage post 903 bottom is run through there is movable post 904, activity post 904 top is connected with torsional spring 909, the hot water shower nozzle 907 that has the slope to set up is run through above activity post 904 one side, hot water shower nozzle 907 one end has hose 908 through flange and bolted connection, activity post 904 one side is run through has polishing dish 906, weld layer surface welding slag is conveniently got rid of, avoid follow-up cover new weld layer on welding slag to lead to grinding roller life to receive the influence, it reduces roughness to polish to the weld layer simultaneously.
Referring to fig. 1, 2 and 4, in the above embodiment, the frame 2 is located on one side of the top of the base 1, the control cabinet 3 is installed on the outer surface of the frame 2, the first motor 5, the hydraulic cylinder 902, the second motor 905 and the overlaying head 10 are all electrically connected with the control cabinet 3, the base 1 is connected with two supporting rollers 7 symmetrically distributed along the center line of the longitudinal axis of the first motor 5, the supporting rollers 7 are connected with the grinding roller 8, the grinding roller 8 is connected with the clamp 6, the base 1 is installed with the first motor 5 for driving the clamp 6 to rotate, the base 1 is connected with the bracket 4, the overlaying head 10 for repairing the grinding roller 8 is installed on the top of the bracket 4, the clamp 6 is adapted to the grinding roller 8, and the grinding roller 8 is connected with the clamp 6 in a detachable mode, the output end of the first motor 5 drives the clamp 6 to rotate after being started, so that the grinding roller 8 rotates, and a welding layer is formed on the surface of the grinding roller 8 by surfacing welding on the surface of the grinding roller 8 after the surfacing head 10 is started.
Referring to fig. 2, 3 and 4, in the above embodiment, a hydraulic cylinder 902 for driving the linkage column 903 to move is installed on the frame 2, a slider is connected to the top of the linkage column 903, a guide rail is connected to the upper portion inside the frame 2, the linkage column 903 is slidably connected to the frame 2 through the slider and the guide rail, a second motor 905 for driving the polishing disc 906 to rotate is installed on the movable column 904, a coupler is connected between the second motor 905 and the polishing disc 906, the polishing disc 906 is rotatably connected to the movable column 904 through a bearing, the cross section of the top of the movable column 904 is "T" shaped, and the movable column 904 is rotatably connected to the linkage column 903 through a rotating shaft, so that welding slag on the surface of the welding layer can be conveniently removed.
The implementation principle of the embodiment is as follows: firstly, a worker connects a hot air spray head 901 to an air outlet end of a high-pressure air heater, then connects a hose 908 to a water outlet end of a boiler, then installs a grinding roller 8 to be repaired on a fixture 6, then installs the fixture 6 on a first motor 5 through a coupler, simultaneously places the grinding roller 8 on two supporting rollers 7, then opens a build-up welding head 10, the first motor 5, a hydraulic cylinder 902 and a second motor 905 through a control cabinet 3, after the first motor 5 is started, an output end drives the fixture 6 to rotate so as to rotate the grinding roller 8, and after the build-up welding head 10 is started, a welding layer is formed on the surface of the grinding roller 8 through build-up welding on the surface of the grinding roller 8;
cleaning welding slag, after the hydraulic cylinder 902 is started, the output end pushes the linkage column 903, the movable column 904, the hot water spray nozzle 907 and the polishing disc 906 to move towards the grinding roller 8 through the piston rod, the movable column 904 is pressed to drive the polishing disc 906, the second motor 905 and the hot water spray nozzle 907 to rotate and adjust the angle along with the continuous movement of the polishing disc 906 and the grinding roller 8, so that the polishing disc 906 corresponds to the inclined plane on the grinding roller 8, meanwhile, the movable column 904 rotates to compress the torsion spring 909, the angle of the polishing disc 906 is automatically adjusted by the pressure so as to be convenient to adapt to grinding rollers 8 with different sizes and slopes, it needs to be noted that the axial center point of the second motor 905 and the axial center of the grinding roller 8 are not in the same line, the axial centers of the two are parallel, so that the polishing disc 906 and the grinding roller 8 can rotate towards one direction by the pressure after the polishing disc 906 is contacted, after the second motor 905 is started, the output end drives the polishing disc 906 to rotate so that the welding slag is influenced by the force to fall, therefore, welding slag can be automatically cleaned conveniently, and meanwhile, the grinding disc 906 can also grind the welding layer to reduce the surface roughness of the welding layer and reduce the abrasion of the welding layer when the grinding roller 8 works;
the clearance residue, later wash the welding layer through hot water shower nozzle 907 and get rid of the burr and the welding slag piece that produce after polishing, simultaneously because grinding roller 8 need preheat to more than 80 ℃ before the build-up welding, consequently adopt the hot water of more than 80 ℃ to wash the welding layer surface and can avoid the heat on the grinding roller 8 to be taken away by water, later receive the water stain influence to produce more welding slag when avoiding follow-up build-up welding through hot air shower nozzle 901 blowout high pressure hot air removal welding layer surface residual water stain.
Although embodiments of the present invention have been shown and described, it is intended that the present invention should not be limited thereto, that the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples, and that modifications, substitutions, variations or the like, which are not inventive and may be made by those skilled in the art without departing from the principle and spirit of the present invention and without departing from the scope of the claims.
Claims (8)
1. The utility model provides a coal pulverizer grinding roller off-line is restoreed with surfacing device, includes base (1) and frame (2), its characterized in that: the cleaning device is characterized in that a cleaning assembly (9) is arranged in the frame (2), the cleaning assembly (9) comprises a hot air spray head (901), a linkage column (903) is arranged in the frame (2), a movable column (904) penetrates through the linkage column (903), a torsion spring (909) is connected to the movable column (904), a hot water spray head (907) is connected to the movable column (904), a hose (908) is connected to the hot water spray head (907), and a polishing disc (906) penetrates through the movable column (904).
2. The overlaying device for offline repair of the grinding roller of the coal mill as claimed in claim 1, wherein: frame (2) are located base (1), install switch board (3) on frame (2), be connected with two backing rolls (7) on base (1), be connected with grinding roller (8) on backing roll (7).
3. The overlaying device for offline repair of the grinding roller of the coal mill as claimed in claim 2, wherein: clamp (6) are connected in grinding roller (8), install on base (1) and be used for driving rotatory first motor (5) of clamp (6).
4. The overlaying device for offline repair of the grinding roller of the coal mill as claimed in claim 2, wherein: the grinding roller repairing device is characterized in that a support (4) is connected to the base (1), and a welding head (10) for repairing the grinding roller (8) is installed on the support (4).
5. The overlaying device for offline repair of the grinding roller of the coal mill as claimed in claim 1, wherein: and a hydraulic cylinder (902) for driving the linkage column (903) to move is arranged on the frame (2), and the linkage column (903) is movably connected with the frame (2).
6. The overlaying device for offline repair of the grinding roller of the coal mill as claimed in claim 5, wherein: and a second motor (905) for driving the polishing disc (906) to rotate is arranged on the movable column (904), and the polishing disc (906) is movably connected with the movable column (904).
7. The overlaying device for offline repair of the grinding roller of the coal mill as claimed in claim 1, wherein: the section of the top of the movable column (904) is T-shaped, and the movable column (904) is movably connected with the linkage column (903).
8. The overlaying device for offline repair of the grinding roller of the coal mill as claimed in claim 3, wherein: the clamp (6) is matched with the grinding roller (8), and the grinding roller (8) is movably connected with the clamp (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210657854.1A CN115070340A (en) | 2022-06-12 | 2022-06-12 | Overlaying device for offline repair of grinding roller of coal mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210657854.1A CN115070340A (en) | 2022-06-12 | 2022-06-12 | Overlaying device for offline repair of grinding roller of coal mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115070340A true CN115070340A (en) | 2022-09-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210657854.1A Pending CN115070340A (en) | 2022-06-12 | 2022-06-12 | Overlaying device for offline repair of grinding roller of coal mill |
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| Country | Link |
|---|---|
| CN (1) | CN115070340A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116275866A (en) * | 2023-04-13 | 2023-06-23 | 常州本森焊业科技有限公司 | Long-life continuous casting roller prosthetic devices |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3151729U (en) * | 2009-04-22 | 2009-07-02 | ポールスター工業株式会社 | Rods such as piston rods and welding overlays thereof |
| CN107283115A (en) * | 2017-08-17 | 2017-10-24 | 安徽卓煌机械设备有限公司 | A kind of cement raw material Vertical Mill wearing layer rotates surfacing equipment |
| CN207239976U (en) * | 2017-10-13 | 2018-04-17 | 天津通卓机器人有限公司 | A kind of pipe fitting grinding clamp |
| CN112077032A (en) * | 2020-09-09 | 2020-12-15 | 湖北金华建科技有限公司 | Auxiliary assembly is restoreed in online build-up welding |
| CN213351158U (en) * | 2020-09-09 | 2021-06-04 | 湖北金华凯机械有限公司 | Open arc on-line surfacing repair device of medium-speed grinding roller |
-
2022
- 2022-06-12 CN CN202210657854.1A patent/CN115070340A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3151729U (en) * | 2009-04-22 | 2009-07-02 | ポールスター工業株式会社 | Rods such as piston rods and welding overlays thereof |
| CN107283115A (en) * | 2017-08-17 | 2017-10-24 | 安徽卓煌机械设备有限公司 | A kind of cement raw material Vertical Mill wearing layer rotates surfacing equipment |
| CN207239976U (en) * | 2017-10-13 | 2018-04-17 | 天津通卓机器人有限公司 | A kind of pipe fitting grinding clamp |
| CN112077032A (en) * | 2020-09-09 | 2020-12-15 | 湖北金华建科技有限公司 | Auxiliary assembly is restoreed in online build-up welding |
| CN213351158U (en) * | 2020-09-09 | 2021-06-04 | 湖北金华凯机械有限公司 | Open arc on-line surfacing repair device of medium-speed grinding roller |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116275866A (en) * | 2023-04-13 | 2023-06-23 | 常州本森焊业科技有限公司 | Long-life continuous casting roller prosthetic devices |
| CN116275866B (en) * | 2023-04-13 | 2023-08-29 | 常州本森焊业科技有限公司 | Long-life continuous casting roller prosthetic devices |
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Effective date of registration: 20240123 Address after: 115007 Mingzhu Road, Bayuquan District, Yingkou City, Liaoning Province Applicant after: Huaneng Yingkou Power Plant Industrial Corp. Country or region after: China Applicant after: HUANENG POWER INTERNATIONAL Co.,Ltd. YINGKOU POWER PLANT Address before: 115000 No.1, Mingzhu Road, Bayuquan District, Yingkou City, Liaoning Province Applicant before: HUANENG POWER INTERNATIONAL Co.,Ltd. YINGKOU POWER PLANT Country or region before: China |
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