CN2257230Y - Laser spray welding powder delivery device - Google Patents

Laser spray welding powder delivery device Download PDF

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Publication number
CN2257230Y
CN2257230Y CN 96232617 CN96232617U CN2257230Y CN 2257230 Y CN2257230 Y CN 2257230Y CN 96232617 CN96232617 CN 96232617 CN 96232617 U CN96232617 U CN 96232617U CN 2257230 Y CN2257230 Y CN 2257230Y
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CN
China
Prior art keywords
powder
laser
control valve
spout
powder delivery
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 96232617
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Chinese (zh)
Inventor
武德勇
纪康宁
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Institute of Nuclear Physics and Chemistry China Academy of Engineering Physics
Original Assignee
Institute of Nuclear Physics and Chemistry China Academy of Engineering Physics
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Filing date
Publication date
Application filed by Institute of Nuclear Physics and Chemistry China Academy of Engineering Physics filed Critical Institute of Nuclear Physics and Chemistry China Academy of Engineering Physics
Priority to CN 96232617 priority Critical patent/CN2257230Y/en
Application granted granted Critical
Publication of CN2257230Y publication Critical patent/CN2257230Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a laser powder delivery device for a spray welding unit, which is composed of a powder bucket 2, a powder delivery pipe 10, a control valve 6, and other parts. When a laser beam irradiates on the working surface of a work piece 20, a powder delivery channel can be opened automatically by a control valve 6 which is controlled by the synchronizing signals of the laser beam, so that metal powder and shield gas can be sprayed onto the work piece 20 at the same time to start a work of spray welding or melted covering. When the laser beam stops irradiation, the powder delivery channel can be closed by the control valve 6 to stop powder delivery. Since the device adopts a lantern ring nozzle 12, not only the adjusting procedure of the device can be simplified, but also the quality of spray welding can be improved. The device has the advantages of small size, light weight, and convenient operation, etc.

Description

Laser surfacing dust feeder
The utility model belongs to the Laser Processing frock, specifically is a kind of dust feeder that is used for the laser surfacing.
The laser weld that current people use, laser melting and coating process, because the time that laser beam flying is radiated on the workpiece is very short, heating surface (area) (HS can be regulated, heating-up temperature can be controlled, and the heat affecting that the non-processing district of workpiece is subjected to is minimum, so these technologies obtain application more and more widely, the particularly repair welding in bubble that on the cast iron and steel parts, exists or crack or at steel casting surface surfacing last layer wear-resistant alloy layer, it has obvious superiority more than other built-up welding, thermal spraying.Its dust feeder employing drum type powder feeder and internal diameter are the defeated powder copper pipe (seeing Table 1993 the 22nd volumes of surface technology the 2nd phase p53~56) of 3mm in laser surfacing or laser melting and coating process, alloy powder is directly delivered to the molten bath by carrying powder gas (argon gas) from copper pipe, adopt this dust feeder structure more complicated, adopt automatic powder feeding system from the side because to carry the direction of motion and the beam direction of powder gas inconsistent, must be with it both intersection point be adjusted on the surface of processing work, when changing, the processing work surface location must adjust at any time, when add man-hour on curved surface or irregular surface, the adjustment of position of intersecting point will be difficult to guarantee.
The purpose of this utility model provides a kind of simple in structure, and volume is little, and is in light weight, cheap, carries the powder direction of motion and laser beam and is consistent, and do not need frequent adjustment, dust feeder easy to use.
The utility model is achieved in that its lower bottom part of powder bucket that metal dust is housed has bottom outlet to connect powder feeding pipe; collar nozzle is fixed on the laser optical head; truncated cone-shaped or flaring spout are arranged on the collar nozzle, and laser beam and protective gas (as argon gas) be directive processing work from spout all.On the sidewall above the spout of collar nozzle, have the through hole meal outlet; a control valve of controlling with the synchronizing signal of laser beam; control opening or sealing of powder feeding passage; when laser beam irradiation is worked; synchronizing signal makes control valve open the powder feeding passage; metal dust drops out from meal outlet; through spraying with laser beam directive processing work from the inner next protection gas (argon gas) of laser optical head; carry out surfacing or cladding; when laser quit work, protective gas stopped to send, and synchronizing signal disappears; control valve sealing powder feeding passage, metal dust stops to drop out from meal outlet.
The utility model is simple in structure as mentioned above, and is in light weight, and gross weight is about 300g can adorn metal dust 100g at every turn.Because metal dust is with protective gas (argon gas) and laser beam motion in the same way on same route; just not be used in after adjust the position of collar nozzle spout and adjusted; and metal dust is subjected to the heating of laser beam in advance after leaving meal outlet; improve the efficiency of heating surface, helped the raising of surfacing quality or coating effect.Adopt the utility model dust feeder, on carbon steel or cast iron part, make the laser The coating experiment respectively, the use laser power is 500~1000w, metal dust is a Ni base self-fluxing alloyed powder, powder size is-150~+ 300 orders, obtained coating uniformly, coating and matrix have formed firm metallurgical binding, and thick coating is 0.3~2mm.
Fig. 1 is a laser surfacing dust feeder structure chart
Fig. 2 send the work schematic diagram of dust feeder for the laser surfacing
Fig. 3 is another embodiment of laser surfacing light powder device
Describe embodiment in detail below in conjunction with accompanying drawing
The first half of the powder bucket 2 of laser surfacing dust feeder is conical or bullet-headed cavity; the upper surface is uncovered; lid 1 is arranged on it; the cavity Lower Half is a funnel-form; its bottom outlet 4 is through to powder bucket 2 exit bottom; the Lower Half profile of powder bucket 2 is cylindrical or square column type; and there are cross through hole 5 and bottom outlet 4 to intersect; one end of cross through hole 5 is a screwed hole; screwed hole is screwed into pneumatic operated valve 6; the drive rod 8 of pneumatic operated valve 6 inserts in the cross through hole 5, and the control signal of pneumatic operated valve 6 is a protective gas 24, and it is sent into through tracheae 7.Bottom outlet stopper 3 is housed in the upper end of bottom outlet 4; rubber-like rubber tube 9 upper ends are socketed on the bottom outlet stopper 3; there is powder leakage hole at the center of bottom outlet stopper 3; its pore size is in order to regulate powder feed rate; by changing the different bottom outlet stopper 3 in powder leakage hole aperture; powder feed rate is regulated in 2.5~40g/min scope; the hole on the drive rod 8 is passed in the lower end of rubber tube 9; collar nozzle 12 is fastened on the laser optical head 17 through screw 15; collar nozzle 12 is an annular; have a spout 14 on its sidewall; spout is inner small and outside big to be truncated cone-shaped or tubaeform; above spout 14, have the through hole meal outlet 13 parallel with laser optical head 17; by adjusting the position of collar nozzle 12; laser beam 16 is just in time penetrated from the spout 14 of collar nozzle 12; terminate on the powder feeding pipe 10 in the outlet of bottom outlet 4 of powder bucket 2; following termination copper pipe 11; and insert in the through hole meal outlet 13 of spout 14 tops; Fig. 2 is a laser surfacing dust feeder work schematic diagram; powder bucket 2 is fixed on the laser optical head 17 among the figure; and can rotate thereupon; protective gas 24 (argon gas) is sent into respectively through tracheae 7 and is made protection usefulness in the laser optical head 17; the pressure high low signal of its protective gas 24 is also given pneumatic operated valve 6 and is made control usefulness; when carrying out the laser surfacing; the gate of the laser optical shutter of laser instrument and protective gas 24 is opened simultaneously; and protective gas 24 sends early than laser beam 16 slightly; when pneumatic operated valve 6 does not have the gas pressure signal; the spring handle drive rod 8 of pneumatic operated valve 6 inside pulls to the right; compressing rubber tube 9; make its sealing; metal dust is plugged and is unable to come down; when the gas pressure signal; gas pressure is pushed drive rod 8 to the left side; position as shown in fig. 1; rubber tube 9 is open-minded; metal dust is unimpeded to be fallen, and the speed that metal dust falls (referring to powder feed rate) is decided by the aperture of the powder leakage hole of bottom outlet stopper 3.Metal dust is again through powder feeding pipe 10; copper pipe 11 arrives meal outlet 13; spout 14; and along with spraying on the processing work 20 from laser optical head 17 inner next protective gas 24 (argon gas); after laser beam 16 emits 18 focusing of line focus lens from laser instrument; directive processing work 20 after speculum 19 reflection again; lump together after metal dust and laser beam 16 arrive spout 14 as can see from Figure 2; directive workpiece 20; laser beam 16 heats to metal dust in advance; improve the efficiency of heating surface, helped the raising of laser surfacing quality.The control signal of pneumatic operated valve 6 is from the protective gas of laser optical head along separate routes, carry with laser optical shutter because of protective gas and carry out synchronously, so the action of pneumatic operated valve also with the laser beam synchronised, do not need other made component, use very convenient.Fig. 3 is another simple type laser surfacing dust feeder, the inner chamber of powder bucket 21 communicates with bottom outlet 4, tube cell 10 is picked in the bottom of powder bucket 21, powder feeding pipe 10 adopts the rubber-like rubber tube, magnetic valve 22 is fixed on the laser optical head 17, the voltage at the two ends of its solenoid 23 is taken from the control voltage with optical gate signal synchronised, the drive rod 8 of magnetic valve 22 is controlled opening and sealing of powder feeding pipe 10, promptly work as the optical gate signal and open laser instrument, synchronizing signal voltage is added to the two ends of solenoid 23 when producing laser beam 16, makes it energising, drive rod 8 actions of magnetic valve 22, open-minded powder feeding pipe 10, metal dust is unimpeded to be fallen, and carries out powder feeding, when the optical gate signal when closing laser instrument, laser beam 16 disappears, synchronizing signal voltage also disappears, solenoid 23 outages, and the drive rod 8 of magnetic valve 22 is under the effect of magnetic valve 22 contained spring power, powder feeding pipe 10 closures, dust feeder stops powder feeding.The working condition of other parts is identical with last embodiment among Fig. 3, no longer repeats.

Claims (4)

1, a kind of laser surfacing dust feeder is made up of powder bucket [2 or 21], powder feeding pipe [10], the upper end of powder feeding pipe [10] is installed on the bottom outlet [4] of powder bucket [2], under terminate to meal outlet [13], it is characterized in that a control valve [6] or [22] are arranged on the powder feeding passage, being fixed in has truncated cone-shaped or flaring spout [14] on the collar nozzle [12] on the laser optical head [17], the following termination copper pipe [11] of powder feeding pipe [10] also is inserted into the through hole meal outlet [13] that has on the sidewall of spout [14] top of collar nozzle [12].
2, dust feeder according to claim 1, it is characterized in that the cavity bottom is a funnelform powder bucket [2], its bottom outlet [4] is through to the exit bottom of powder bucket [2], the Lower Half of powder bucket [2] has cross through hole [5], and it is crossing with bottom outlet [4], the bottom outlet stopper [3] that has powder leakage hole is arranged in the bottom outlet [4], and rubber tube [9] upper end is socketed on the bottom outlet stopper [3], and the hole on the drive rod [8] of control valve [6] or [22] is passed in the lower end of rubber tube [9].
3, dust feeder according to claim 1 is characterized in that collar nozzle [12] is an annular, has spout [14] on its sidewall, and spout is inner small and outside big to be truncated cone-shaped or tubaeform, has through hole meal outlet [13] in the top of spout [14].
4, dust feeder according to claim 1 and 2 is characterized in that control valve can adopt pneumatic control valve [6] or solenoid electric valve [22].
CN 96232617 1996-01-30 1996-01-30 Laser spray welding powder delivery device Expired - Fee Related CN2257230Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 96232617 CN2257230Y (en) 1996-01-30 1996-01-30 Laser spray welding powder delivery device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 96232617 CN2257230Y (en) 1996-01-30 1996-01-30 Laser spray welding powder delivery device

Publications (1)

Publication Number Publication Date
CN2257230Y true CN2257230Y (en) 1997-07-02

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Application Number Title Priority Date Filing Date
CN 96232617 Expired - Fee Related CN2257230Y (en) 1996-01-30 1996-01-30 Laser spray welding powder delivery device

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CN (1) CN2257230Y (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107381057A (en) * 2017-09-04 2017-11-24 北京金航智造科技有限公司 A kind of micro-nano powder powder feeder that uninterrupted powder feeding can be achieved
CN110831721A (en) * 2017-03-29 2020-02-21 激光键合有限公司 Methods, systems, and assemblies for laser deposition
CN116837378A (en) * 2023-08-29 2023-10-03 山东镭研激光科技有限公司 Laser cladding feeding device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110831721A (en) * 2017-03-29 2020-02-21 激光键合有限公司 Methods, systems, and assemblies for laser deposition
CN107381057A (en) * 2017-09-04 2017-11-24 北京金航智造科技有限公司 A kind of micro-nano powder powder feeder that uninterrupted powder feeding can be achieved
CN107381057B (en) * 2017-09-04 2018-12-21 北京金航智造科技有限公司 A kind of micro-nano powder powder feeder that uninterrupted powder feeding can be achieved
CN116837378A (en) * 2023-08-29 2023-10-03 山东镭研激光科技有限公司 Laser cladding feeding device
CN116837378B (en) * 2023-08-29 2023-11-17 山东镭研激光科技有限公司 Laser cladding feeding device

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GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee