CN114045490A - Gas circulating device for laser cladding and method thereof - Google Patents
Gas circulating device for laser cladding and method thereof Download PDFInfo
- Publication number
- CN114045490A CN114045490A CN202111383670.2A CN202111383670A CN114045490A CN 114045490 A CN114045490 A CN 114045490A CN 202111383670 A CN202111383670 A CN 202111383670A CN 114045490 A CN114045490 A CN 114045490A
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- Prior art keywords
- laser
- gas
- room
- heat exchanger
- cladding
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
- F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
Abstract
The invention discloses a gas circulating device for laser cladding, which relates to the field of laser cladding and comprises a laser room, a laser cladding mechanism and a workpiece positioning mechanism which are arranged in the laser room, wherein an inert gas conveying device for conveying inert gas to the position of the laser cladding mechanism in the laser room is arranged outside the laser room, a heat exchanger exhaust port at the top of the laser room is communicated with the gas circulating device through a pipeline, the gas circulating device is used for introducing gas from the inner lower part of the laser room, ensuring that the laser cladding work is in an inert protective atmosphere, avoiding parts from being seriously oxidized due to contact with air in the forming process, improving the processing efficiency of the parts, then starting the gas circulating device to blow gas such as smoke and the like generated in the cladding process upwards, the waste heat recovery function is realized through the heat exchanger, and gas and heat generated in the cladding process are discharged in time.
Description
Technical Field
The invention relates to the field of laser cladding, in particular to a gas circulating device for laser cladding and a method thereof.
Background
With the development of industrial technology, laser cladding technology is more and more widely applied, wherein in the laser cladding, cladding materials are added on the surface of a base material, and powder is melted and solidified by utilizing high-energy-density laser to form a metallurgically bonded cladding layer with the surface of the base material, so that the hardness, the wear resistance and the corrosion resistance of the surface of a part are greatly improved.
During laser cladding, in order to avoid the component from being seriously oxidized due to contact with air in the forming process and influencing the quality of the component, an inert gas protection system needs to be arranged, gas such as smoke generated in the laser cladding process is directly discharged to easily cause pollution, heat in the gas such as the smoke is discharged in vain, and resource waste is caused to a certain extent.
In order to solve the problems, the invention provides a gas circulating device for laser cladding.
Disclosure of Invention
The invention aims to provide a gas circulating device for laser cladding and a method thereof, wherein an inert gas conveying device for conveying inert gas to a laser cladding mechanism in a laser room is arranged outside the laser room, an exhaust port of a heat exchanger at the top of the laser room is communicated with the gas circulating device through a pipeline, the gas circulating device is used for introducing gas from the inner lower part of the laser room, the laser cladding work is ensured to be in inert protective atmosphere, the parts are prevented from being contacted with air and seriously oxidized in the forming process, the processing efficiency of the parts is improved, then the gas circulating device is started, the gas such as smoke and the like generated in the cladding process is blown upwards, the waste heat recovery function is realized through the heat exchanger, the cooled gas such as the smoke and the like is purified by the gas circulating device and then circulated into the laser room again, and the aims of uninterrupted exhaust and cooling of the laser room are realized, thereby solving the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a gas circulating device for laser cladding, includes laser room and the inside laser cladding mechanism and the work piece positioning mechanism that set up in laser room, and the outside in laser room is provided with the inert gas conveyor who is used for carrying inert gas to the inside laser cladding mechanism position department in laser room, and the top in laser room is provided with the heat exchanger, and the gas vent of heat exchanger passes through pipeline intercommunication gas circulating device, and gas circulating device is used for leading-in gas from the interior below in laser room.
Further, gas circulation device includes bag collector, gas cleaning ware and air pump, and bag collector is used for putting through laser room top through the pipeline, and the air collecting cover sets up the top mouth in laser room, and bag collector's the end of giving vent to anger passes through gas cleaning ware and links the input of breather pump, and the output of air pump passes through the gas hole intercommunication of seting up on pipeline and the laser room lateral wall.
Furthermore, a wind gathering cover is further installed at the top opening of the laser room, and the top end of the wind gathering cover is communicated with the air inlet end of the bag type dust collector through a pipeline.
Further, the heat exchanger is installed in the top opening of the laser room, the bottom end of the heat exchanger is an air inlet and is located at the top in the laser room, an exhaust fan is installed in the air inlet at the top end of the heat exchanger and is located in the air collecting cover, a cold water inlet of the heat exchanger is communicated with a water supply source through a pipeline, and a hot water inlet of the heat exchanger is communicated with external heat utilization equipment through a pipeline.
Furthermore, the side wall of the laser room is also provided with a door and an observation mirror.
Furthermore, the laser cladding mechanism comprises a laser head arranged on the cantilever beam through a connecting plate, the end part of the cantilever beam is arranged on a moving block, the moving block is further connected with a lead screw through a coupler in a threaded manner, and the lead screw is driven by a motor.
Further, the workpiece positioning mechanism comprises an ejector pin and a four-jaw chuck.
Compared with the prior art, the invention has the following beneficial effects:
1. the inert gas conveying device is used for blowing inert gas to the position of the laser cladding mechanism, so that a protective gas cavity is formed at the periphery of the laser cladding mechanism, when the inert gas flow is continuously blown through the protective gas cavity, the protective gas cavity can be dynamically washed, the laser cladding work is ensured to be in an inert protective atmosphere, the parts are prevented from being seriously oxidized due to contact with air in the forming process, and the processing efficiency of the parts is improved;
2. through gas circulation device, gas such as smog that will melt the process and produce upwards blows to absorb the heat in the gas such as smog through the heat exchanger, realize the waste heat recovery function, gas such as smog after the cooling is circulated to the laser room again after purifying through gas circulation device, realizes incessant exhaust of laser room and cooling purpose.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the installation of the exhaust fan and the heat exchanger according to the present invention;
fig. 3 is a schematic view of a part of the structure of the laser cladding mechanism according to the present invention;
fig. 4 is a schematic structural view of the four-jaw chuck of the present invention.
In the figure: 1. a laser room; 2. a heat exchanger; 3. an exhaust fan; 4. a wind gathering cover; 5. a coupling; 6. a cantilever beam; 7. a gas blowing hole; 8. a gas circulation device; 9. a door; 10. a thimble; 11. a four-jaw chuck; 12. an observation mirror; 13. a screw rod; 14. an inert gas delivery device; 15. an exhaust port; 16. an air inlet.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 and 2, a gas circulation device for laser cladding includes a laser room 1, a laser cladding mechanism and a workpiece positioning mechanism disposed inside the laser room 1, an inert gas delivery device 14 disposed outside the laser room 1 for delivering inert gas to the laser cladding mechanism position inside the laser room 1, a heat exchanger 2 disposed on the top of the laser room 1, a gas exhaust port 15 of the heat exchanger 2 connected to a gas circulation device 8 through a pipe, the gas circulation device 8 for introducing gas from the inner lower part of the laser room 1, the inert gas delivery device 14 being an inert gas storage tank, and being blown to the laser cladding mechanism position by a gas pump, so that a shielding gas cavity is formed on the periphery of the laser cladding mechanism, and when the gas flow of the inert gas continuously blows through the shielding gas cavity, the shielding gas cavity can be dynamically purged to ensure that the laser works in an inert shielding atmosphere, avoid the part to be contacted with the air and by serious oxidation in the forming process, improve the machining efficiency of part, open gas circulation device 8 afterwards, gas such as smog that will melt the process and produce upwards blows to absorb the heat in gas such as smog through heat exchanger 2, realize the waste heat recovery function, gas such as smog after the cooling is circulated to laser room 1 again after purifying through gas circulation device 8, realize the incessant exhaust of laser room 1 and the purpose of cooling.
Referring to fig. 1, the gas circulation device 8 includes a bag-type dust collector, a smoke purifier and a gas pump, the bag-type dust collector is used for connecting the top of the laser room 1 through a pipeline, the air collecting cover 4 is arranged at the top opening of the laser room 1, the air outlet end of the bag-type dust collector is connected with the input end of the ventilation pump through the smoke purifier, the output end of the gas pump is communicated with an air blowing hole 7 formed in the side wall of the laser room 1 through a pipeline, and the bag-type dust collector and the smoke purifier are used for filtering and purifying gases such as smoke, so that the cleanness of the circulating gas is ensured.
Referring to fig. 2, a wind collecting cover 4 is further installed at the top opening of the laser room 1, the top end of the wind collecting cover 4 is used for being communicated with the air inlet end of the bag type dust collector through a pipeline, and gases such as smoke can be collected through the wind collecting cover 4.
Referring to fig. 2, the heat exchanger 2 is installed in the top opening of the laser room 1, the bottom end of the heat exchanger 2 is an air inlet 16 and is located at the top of the laser room 1, an exhaust fan 3 is installed in the air inlet 16 at the top end of the heat exchanger 2 and is located in the air collecting cover 4, a cold water inlet of the heat exchanger 2 is connected with a water supply source through a pipeline, a hot water inlet of the heat exchanger 2 is connected with external heat utilization equipment through a pipeline, the purpose of waste heat recovery is achieved through the heat exchanger 2, waste materials are changed into wealth, and a certain energy-saving effect is achieved.
Referring to fig. 1, the side wall of the laser room 1 is further provided with a door 9 and an observation mirror 12, and the whole cladding process can be monitored in real time through the observation mirror 12.
Referring to fig. 1-3, the laser cladding mechanism comprises a laser head mounted on a cantilever beam 6 through a connecting plate, the end of the cantilever beam 6 is mounted on a moving block, the moving block is further in threaded connection with a lead screw 13 through a coupler 5, the lead screw 13 is driven by a motor, and the cantilever beam 6 can be controlled to move left and right under the driving of the motor.
Referring to fig. 1-3, the workpiece positioning mechanism includes a thimble 10 and a four-jaw chuck 11, and the workpiece is clamped by the four-jaw chuck 11, and the thimble 10 abuts against the workpiece to complete temporary positioning of the workpiece.
In summary, when the device is used, firstly, a workpiece is positioned by the ejector pin 10 and the four-jaw chuck 11, then the position of the cantilever beam 6 is adjusted by the laser cladding mechanism, the laser cladding operation is performed on the workpiece by the laser head, and meanwhile, the heat exchanger 2, the exhaust fan 3, the gas circulation device 8 and the inert gas conveying device 14 are started, the inert gas conveying device 14 can directly introduce inert gas to the position of the laser cladding mechanism, an inert gas protection atmosphere is formed in the space near the laser head, so that the part is prevented from being seriously oxidized due to contact with air in the forming process, and the processing efficiency of the part is improved; blow the air current from laser room 1 lower part up through gas circulation device 8 to behind the heat transfer effect of heat exchanger 2, introduce gas such as smog again by exhaust fan 3 and filter and purify gas circulation device 8, this in-process heat exchanger 2 can be with waste heat recovery in the gas such as smog and utilize, realize the reuse of resource, and gas circulation device 8 also can regularly supply the new trend, so that in time discharge the gas and the heat that will clad the process and produce.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a gas circulating device for laser cladding, includes inside laser cladding mechanism and the work piece positioning mechanism who sets up in laser room (1) and laser room (1), its characterized in that: an inert gas conveying device (14) used for conveying inert gas to the position of a laser cladding mechanism in the laser room (1) is arranged outside the laser room (1), a heat exchanger (2) is arranged at the top of the laser room (1), an exhaust port (15) of the heat exchanger (2) is communicated with a gas circulating device (8) through a pipeline, and the gas circulating device (8) is used for introducing gas from the inner lower part of the laser room (1); gas circulating device (8) are including bag collector, gas cleaning ware and air pump, bag collector is used for putting through laser room (1) top through the pipeline, air collecting cover (4) set up the fore-set in laser room (1), bag collector's the end of giving vent to anger is through the input of gas cleaning ware even breather pump, the output of air pump passes through gas hole (7) intercommunication of seting up on pipeline and the laser room (1) lateral wall, laser cladding mechanism includes installs the laser head on cantilever beam (6) through the connecting plate, the tip of cantilever beam (6) is installed on the movable block, still there are lead screw (13) through shaft joint (5) threaded connection on the movable block, lead screw (13) are through motor drive.
2. The gas circulation device for laser cladding as claimed in claim 1, wherein: the top opening of the laser room (1) is also provided with a wind-gathering cover (4), and the top end of the wind-gathering cover (4) is communicated with the air inlet end of the bag-type dust collector through a pipeline.
3. The gas circulation device for laser cladding as claimed in claim 1, wherein: install in the apical opening in laser room (1) heat exchanger (2), the bottom of heat exchanger (2) is air inlet (16) and is in top in laser room (1), install exhaust fan (3) and be in air collecting cover (4) in air inlet (16) on heat exchanger (2) top, just the cold water inlet of heat exchanger (2) passes through the pipeline and switches on the water supply source, the hot water import of heat exchanger (2) passes through the pipeline and switches on outside with the thermal apparatus.
4. The gas circulation device for laser cladding as claimed in claim 3, wherein: the side wall of the laser room (1) is also provided with a door (9) and an observation mirror (12).
5. The gas circulation device for laser cladding as claimed in claim 3, wherein: the workpiece positioning mechanism comprises an ejector pin (10) and a four-jaw chuck (11).
6. The use method of the gas circulation device for laser cladding according to claim 3, characterized in that: the method comprises the following steps: firstly, a workpiece is positioned by using an ejector pin (10) and a four-jaw chuck (11), then the position of a cantilever beam (6) is adjusted by a laser cladding mechanism, the workpiece is subjected to laser cladding operation by using a laser head, meanwhile, a heat exchanger (2), an exhaust fan (3), a gas circulation device (8) and an inert gas conveying device (14) are started, the inert gas conveying device (14) can directly introduce inert gas to the position of the laser cladding mechanism, an inert gas protective atmosphere is formed in the space near a laser head, the part is prevented from being seriously oxidized due to contact with air in the forming process, and the processing efficiency of the part is improved;
finally, the air flow is blown upwards from the lower part of the laser room (1) through the gas circulating device (8), after the air flow passes through the heat exchange effect of the heat exchanger (2), the air such as the smoke is introduced into the gas circulating device (8) again through the exhaust fan (3) to be filtered and purified, the heat exchanger (2) can recycle and utilize waste heat in the gas such as the smoke, the resource recycling is realized, and the gas circulating device (8) can supplement fresh air at regular time, so that the gas and heat generated in the cladding process can be discharged in time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111383670.2A CN114045490A (en) | 2021-11-22 | 2021-11-22 | Gas circulating device for laser cladding and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111383670.2A CN114045490A (en) | 2021-11-22 | 2021-11-22 | Gas circulating device for laser cladding and method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114045490A true CN114045490A (en) | 2022-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111383670.2A Withdrawn CN114045490A (en) | 2021-11-22 | 2021-11-22 | Gas circulating device for laser cladding and method thereof |
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| CN (1) | CN114045490A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205905435U (en) * | 2016-08-05 | 2017-01-25 | 深圳职业技术学院 | 3d printer |
| JP2017048408A (en) * | 2015-08-31 | 2017-03-09 | 株式会社ソディック | Laminate molding apparatus |
| CN206308421U (en) * | 2017-01-04 | 2017-07-07 | 燕山大学 | A kind of laser cladding apparatus with substrate preheating, insulation and noble gas defencive function |
| CN111633328A (en) * | 2020-06-08 | 2020-09-08 | 武汉光谷航天三江激光产业技术研究院有限公司 | Weak atmosphere environment laser welding device and method |
| CN211645386U (en) * | 2019-12-24 | 2020-10-09 | 天津危伏智能装备有限公司 | Integrated small-sized laser cladding equipment |
| CN113463092A (en) * | 2021-07-02 | 2021-10-01 | 济宁矿业集团海纳科技机电股份有限公司 | Laser cladding sealing device |
| CN113560713A (en) * | 2021-07-20 | 2021-10-29 | 扬州镭奔激光科技有限公司 | Protection tool for forming laser forging process by combining laser cladding and laser impact |
-
2021
- 2021-11-22 CN CN202111383670.2A patent/CN114045490A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017048408A (en) * | 2015-08-31 | 2017-03-09 | 株式会社ソディック | Laminate molding apparatus |
| CN205905435U (en) * | 2016-08-05 | 2017-01-25 | 深圳职业技术学院 | 3d printer |
| CN206308421U (en) * | 2017-01-04 | 2017-07-07 | 燕山大学 | A kind of laser cladding apparatus with substrate preheating, insulation and noble gas defencive function |
| CN211645386U (en) * | 2019-12-24 | 2020-10-09 | 天津危伏智能装备有限公司 | Integrated small-sized laser cladding equipment |
| CN111633328A (en) * | 2020-06-08 | 2020-09-08 | 武汉光谷航天三江激光产业技术研究院有限公司 | Weak atmosphere environment laser welding device and method |
| CN113463092A (en) * | 2021-07-02 | 2021-10-01 | 济宁矿业集团海纳科技机电股份有限公司 | Laser cladding sealing device |
| CN113560713A (en) * | 2021-07-20 | 2021-10-29 | 扬州镭奔激光科技有限公司 | Protection tool for forming laser forging process by combining laser cladding and laser impact |
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Application publication date: 20220215 |