CN106987837B - A kind of laser spraying dust feeder - Google Patents
A kind of laser spraying dust feeder Download PDFInfo
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- CN106987837B CN106987837B CN201710155228.1A CN201710155228A CN106987837B CN 106987837 B CN106987837 B CN 106987837B CN 201710155228 A CN201710155228 A CN 201710155228A CN 106987837 B CN106987837 B CN 106987837B
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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
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Air Transport Of Granular Materials (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
The present invention relates to a kind of laser spraying dust feeders, mainly include storage tube；Sending disk of powder, into powder agglomates, go out powder agglomates；Machine governor, potentiometer, digital table, flour extraction pipe, solenoid valve, air inlet pipe.Wherein storage tube setting is sufficiently loaded with the alloy powder of dosage, the stirring rod being connected to the motor is arranged in storage tube in agent set the top, inside, can switch stirring motor according to the mobility of actual processing powder.Transmission device is mainly the sending disk of powder for having powder delivery groove, it is installed into powder agglomates on disk, goes out powder agglomates, when transmission, powder agglomates is fixed with respect to storage tube into powder agglomates and out, and sending disk of powder is driven by motor and is rotated, powder goes out powder agglomates channel from powder is sent to out on powder agglomates into entering powder delivery groove into powder agglomates channel on powder agglomates, when sending disk of powder rotates counterclockwise, powder enters flour extraction pipe from meal outlet under gas pressure, realizes powder supplies.
Description
Technical field
The present invention relates to a kind of dust feeder of laser spraying, especially one kind to be related to collection storage powder, transmission, control, pneumatic
The novel synchronous dust feeder for the laser spraying Technology design exploitation that system is integrated.
Background technique
Laser spraying is a kind of new surface modifications and processing technique, it is using high energy laser beam by substrate surface layer gold
Belong to fusing, while the coating material powder selected is added on being sprayed-on matrix surface with different feeding styles, through laser
Radiation be allowed to matrix surface thin layer simultaneously melt, and quickly solidify after formation dilution it is extremely low, formed in conjunction with basis material
Composition metal surface covering.Laser spraying processing technique improves the wear-resisting, anti-corrosion, heat-resisting, anti-oxidant of substrate surface well
And electrical characteristic etc., to achieve the purpose that the modification and reparation to substrate surface, which both meets production to material
The requirement of characteristic, and a large amount of Precious Metals Resources are saved, and stablize pollution-free.
Laser spraying processing is divided into two major classes according to the method for supplying difference of material: preset method and synchronous powder feeding system method.It is synchronous
Powder-feeding method technical process is simple, and alloy material utilization rate is high, and controllability is good, automation easy to accomplish, is laser spraying technology
Prefered method, using more in domestic and international actual production.In synchronous powder feeding system technique, the major parameter of processing quality has: processing
Speed, powder unit time transfer rate, laser power density distribution, spot diameter and powder conveying speed.Powder feeder determines
Transfer rate and conveying speed, it is one of the core element in laser spraying technology, it is according to processing technology to laser molten pool
Convey the powder set.
The quality of powder feeder performance directly affects quality and processing part size of spray coating etc., so exploitation is high performance
Powder feeder is particularly important laser spraying processing.Under normal circumstances, powder (particle diameter > 100 μm) stream of larger size
Dynamic property is preferable, is easy to transmit, and the lesser powder of particle diameter (particle diameter < 1 μm) is easy agglomerate and viscous, mobility compared with
Difference, it is very difficult for usually transmitting the powder of such size, so, in synchronous powder feeder, poor fluidity is superfines
The difficult point of conveying due to the agglomerate of fine powder and viscous, and causes powder feeding discontinuous and powder sending quantity is uneven, obtained spray coating
It is in uneven thickness, surface quality is poor, the quality of serious accurate spraying and micro shaping.So conveying and reality for superfines
Existing micro conveying by be later powder feeder research emphasis.And for the research of powder feeder synthesization, would be even more beneficial to realize
Laser spraying complete equipment for processing it is integrated and integrated.The powder conveying effect of rotating disc type powder feeder special shape is bad,
Powder feeding rate is uncontrollable when work, and requires height, slightly moist powder to the degree of drying of powder, can make the continuity of powder feeding
It is reduced with uniformity.
Currently, both at home and abroad to the development target of powder feeder be continuity when powder feeder works, uniformity, stability and
Controllability is increased to more scientific, a more advanced level.Superfines this kind of for nano-phase powder is easy to happen in conveying
Reunite, current powder feeder is well solved not yet.
Summary of the invention
It is an object of the invention to solve the above problem of the existing technology, for the quick hair for adapting to laser spraying technology
Exhibition provides a kind of dust feeder of reliable, stable, continuous, controllable metal powder laser spraying.The present invention is dynamic based on gas
Mechanics principle, the gas being passed through carry out powder conveying as current-carrying gas, and this powder feeder is suitble to the conveying of various shape powder,
And the powder of different materials can be with blending transportation, and sending point rate is stepless time adjustment.
The invention adopts the following technical scheme: mainly by storage tube, powder feeding transmission device, powder feeding control device, gas circuit
The rotating disc type powder feeder of system composition.
This powder feeder includes 1-3 storage tube, storage tube be mounted on the powder agglomates and outlet of storage tube with into powder agglomates table
Face is connected into powder agglomates channel；Storage tube bottom is equipped with stirring motor, stirring motor output shaft and the stirring rod phase in storage tube
Even, stirring rod is rotated when work with 50 revolutions per seconds of speed, therefore is suitable for the poor powder of flow behavior, such as ceramic powders.Chu Fen
If cylinder does not open stirring motor, it is suitable for the preferable powder of flow behavior, such as metal powder.
The powder feeding transmission device of this powder feeder includes powder feeding motor, sending disk of powder；Powder feeding panel surface is provided with a circle powder delivery groove, send
Powder tank is equipped with into powder agglomates and out powder agglomates, powder feeding block and powder agglomates is symmetrical out, powder feeding block and powder agglomates is not rotated with sending disk of powder out；
Powder feeding motor is located at below sending disk of powder, and the output shaft of powder feeding motor is exactly the rotation axis of sending disk of powder.Powder in storage tube relies on
The gravity of itself is by the way that in the powder delivery groove that falls in sending disk of powder into powder agglomates, sending disk of powder drives uniform rotation, powder delivery groove by powder feeding motor
In powder conveyed with the rotation of sending disk of powder to powder agglomates out, powder agglomates and into the sector structure for having protrusion below powder agglomates respectively out, with
Sending disk of powder powder delivery groove is fitted close, the enterprising powder channel unilateral side of sector structure be provided with opposite upper groove be used to for powder being blocked in into
Below powder agglomates channel and out powder agglomates channel.When air-channel system is opened, by sending when the powder in sending disk of powder powder delivery groove reaches out powder agglomates
Powder carrier gas drive enter powder agglomates, powder agglomates is connect with meal outlet out, and meal outlet is connect with flour extraction pipe, flour extraction pipe be dust feeder only
A outlet passageway one by one, powder just pass through powder agglomates channel with air-flow and send out from flour extraction pipe.
The powder feeding control device of this powder feeder includes powder feeding machine governor, potentiometer, digital table etc..By adjusting current potential
Device can make the reading 0~90 of digital table, and powder feeding electricity can be obtained in the corresponding 0~90V voltage being added on powder feeding motor accordingly
Machine, the i.e. revolving speed of sending disk of powder.
The air-channel system composition of powder feeder is successively are as follows: air inlet pipe -- digital table -- solenoid valve-escape pipe -- flour extraction pipe.
The powder feeding block is divided into powder agglomates and powder feeding block, and into larger into the fast access opening of powder on powder agglomates, powder agglomates goes out powder out
Block channel is smaller, and powder feeding block bottom and sending disk of powder narrow slot cooperate, and has opposite opening in narrow slot part into powder agglomates and powder feeding block.
Compared with prior art, the present invention structure is simple, and it is easy to operate, intake velocity is adjusted, powder converges degree height,
Powder convergence focus easily positions powder using efficiency height, can be effectively controlled powder feed rate.
Detailed description of the invention
Fig. 1 laser spraying dust feeder overall effect schematic diagram.
Fig. 2 laser spraying powder feeding disc main body top view.
Fig. 3 laser spraying dust feeder gas circuit control schematic diagram.
Fig. 4 laser spraying dust feeder powder agglomates pictorial diagram into powder agglomates and out.
1. storage tube；2. stirring rod；3. sending disk of powder；4. into powder agglomates；5. going out powder agglomates；6. meal outlet；7. air inlet；8. powder feeding
Slot；9. going out powder agglomates channel；10. into powder agglomates channel；11. powder feeding tray fixing device；12. digital table；13. solenoid valve；14. going out powder
Pipe；15. air inlet pipe；16. powder feeding chamber
Specific embodiment
Such as scheme this dust feeder suitable for laser spraying, mainly includes storage tube 1；Sending disk of powder 3, into powder agglomates 4, go out powder
Block 5；Machine governor, potentiometer, digital table 12, flour extraction pipe 14, solenoid valve 13, air inlet pipe 15.
Wherein the storage tube 1 setting is sufficiently loaded with the alloy powder of dosage, is storing up in agent set the top, inside
The stirring rod 2 being connected to the motor is set in powder drum 1, stirring motor can be switched according to the mobility of actual processing powder.
Transmission device is mainly to have the sending disk of powder of powder delivery groove 8, and powder agglomates 4 is installed on disk, goes out powder agglomates 5, when transmission, into powder
Block 4 and out powder agglomates 5 are fixed with respect to storage tube, and sending disk of powder 3 drives rotation by motor, powder from on powder agglomates 4 into powder agglomates
Channel 10 enters powder delivery groove, and powder is sent to out on powder agglomates 5 when sending disk of powder 3 rotates counterclockwise and goes out powder agglomates channel 9, powder is in gas
Enter flour extraction pipe 14 from meal outlet 6 under pressure effect, realizes powder supplies.
Machine governor, which is connected to, adjusts potentiometer control motor speed.
Air-channel system is provided with digital table 12 outside gas cylinder, controls intake velocity on demand under the action of digital table 12,
To achieve the effect that control powder sending quantity, air inlet pipe is connected to solenoid valve 13, and gas passes through solenoid valve 13 and reaches air inlet 7, enters
The powder feeding chamber 16 of sealing, when work, gas drives out the powder at powder agglomates channel 9 to enter flour extraction pipe 14, realizes powder supplies.When
It is all adjust in place after i.e. openable laser start to process.
Claims (3)
1. a kind of laser spraying dust feeder, the dust feeder is mainly by storage tube, powder feeding transmission device, powder feeding control dress
It sets, air-channel system composition；It is characterized by: powder feeding transmission device includes powder feeding motor, sending disk of powder；Powder feeding panel surface is provided with a circle
Powder delivery groove, powder delivery groove are equipped with into powder agglomates and out powder agglomates, powder feeding block and powder agglomates is symmetrical out, and powder feeding block and out powder agglomates be not with sending
The rotation of powder disk；Powder feeding motor is located at below sending disk of powder, and the output shaft of powder feeding motor is exactly the rotation axis of sending disk of powder；Storage tube is 1-
3, storage tube is mounted on the powder agglomates and outlet of storage tube and connecting into powder agglomates channel into powder agglomates surface；Storage tube bottom
Equipped with stirring motor, stirring motor output shaft is connected with the stirring rod in storage tube；Powder in storage tube relies on the weight of itself
Power is by the way that in the powder delivery groove that falls in sending disk of powder into powder agglomates, sending disk of powder drives uniform rotation by powder feeding motor, the powder in powder delivery groove
It conveys with the rotation of sending disk of powder to powder agglomates out, out powder agglomates and into the sector structure for having protrusion below powder agglomates respectively, is sent with sending disk of powder
Powder tank is fitted close, and sector structure is provided with relatively unidirectional upper groove and is used to for powder being blocked in into powder agglomates channel and powder agglomates channel out
Lower section；When air-channel system is opened, the powder in sending disk of powder powder delivery groove, which is driven when reaching out powder agglomates by powder feeding carrier gas, enters powder agglomates,
Powder agglomates is connect with meal outlet out, and meal outlet is connect with flour extraction pipe, and flour extraction pipe is dust feeder only one outlet passageway, and powder is just
It passes through powder agglomates channel with air-flow to send out from flour extraction pipe；Powder feeding control device includes powder feeding machine governor, potentiometer, number
Table；It can make the reading 0~90 of digital table by adjusting potentiometer, correspond to the 0~90V voltage being added on powder feeding motor, accordingly
Powder feeding motor, the i.e. revolving speed of sending disk of powder can be obtained.
2. a kind of laser spraying dust feeder as described in claim 1, it is characterised in that: stirring rod is when storage tube works with 50
Revolutions per second speed rotation, therefore be suitable for the poor powder of flow behavior；If storage tube does not open stirring motor, it is suitable for transport flow
The preferable powder of property.
3. a kind of laser spraying dust feeder as described in claim 1, it is characterised in that: air-channel system forms successively are as follows: into
Tracheae -- digital table -- solenoid valve-escape pipe -- flour extraction pipe；Air-channel system is provided with digital table outside gas cylinder, in digital table
Intake velocity is controlled under effect on demand, to achieve the effect that control powder sending quantity, air inlet pipe is connected to solenoid valve, and gas passes through electricity
Magnet valve reaches air inlet, and into the powder feeding chamber of sealing, when work, gas drives out the powder at powder agglomates channel to enter flour extraction pipe,
Realize powder supplies.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710155228.1A CN106987837B (en) | 2017-03-16 | 2017-03-16 | A kind of laser spraying dust feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710155228.1A CN106987837B (en) | 2017-03-16 | 2017-03-16 | A kind of laser spraying dust feeder |
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| Publication Number | Publication Date |
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| CN106987837A CN106987837A (en) | 2017-07-28 |
| CN106987837B true CN106987837B (en) | 2019-03-22 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108754493B (en) * | 2018-08-17 | 2023-06-20 | 福建工程学院 | Powder feeding device for laser cladding capable of realizing gradient change of powder |
| CN109280918A (en) * | 2018-11-09 | 2019-01-29 | 华侨大学 | A kind of dead-weight quantitatively supplying powder device suitable for laser remanufacturing |
| CN110592586A (en) * | 2019-10-29 | 2019-12-20 | 岗春激光科技（江苏）有限公司 | Powder feeding device |
| CN111910184A (en) * | 2020-08-06 | 2020-11-10 | 沈阳中钛装备制造有限公司 | Laser cladding method |
| CN114932238B (en) * | 2022-06-15 | 2024-03-26 | 昆明理工大学 | Powder feeding device and powder feeding method for multi-material additive manufacturing |
| CN116079068A (en) * | 2022-10-24 | 2023-05-09 | 华南理工大学 | In-situ synthesis system for additive manufacturing and control method |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2504368C (en) * | 2002-10-31 | 2012-07-10 | Ehsan Toyserkani | System and method for closed-loop control of laser cladding by powder injection |
| CN103602978A (en) * | 2013-10-21 | 2014-02-26 | 苏州大学 | Mechanical type automatic conversion device of laser cladding powder synchronous powder feeder |
| CN204185568U (en) * | 2014-09-11 | 2015-03-04 | 重庆江陆激光科技有限公司 | A kind of laser coating and powder feeding device with batch mixing function |
| CN205258608U (en) * | 2015-11-22 | 2016-05-25 | 华中科技大学 | Compound movement powder feeder |
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