CN103817435A - Cooling device applied to laser liquid metal cutting and machining process - Google Patents
Cooling device applied to laser liquid metal cutting and machining process Download PDFInfo
- Publication number
- CN103817435A CN103817435A CN201310497557.6A CN201310497557A CN103817435A CN 103817435 A CN103817435 A CN 103817435A CN 201310497557 A CN201310497557 A CN 201310497557A CN 103817435 A CN103817435 A CN 103817435A
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- China
- Prior art keywords
- liquid metal
- cooling device
- laser
- water
- water tank
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
- B23K26/146—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor the fluid stream containing a liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
Abstract
The invention discloses a cooling device applied to laser liquid metal cutting and a machining process using the cooling device to cut liquid metal. The cooling device comprises a cooling hose, an air nozzle, a machining table and a water tank. The cooling hose is communicated with the air nozzle. During machining, the air nozzles faces directly to a liquid metal workpiece on the machining table, and the water-based paint flowing out of the air nozzle is allowed to exactly fall to the cut of the liquid metal; the water tank is disposed below the machining table, and the water-based paint on the machining table is allowed to return the water tank communicated with the cooling hose; the water-based paint rises into the cooling hose under power driving and flows out from the air nozzle. The cooling device has the advantages that recycling of the water-based paint is achieved, energy is saved, pollution is reduced, and during machining, when the water-based paint falls to the cut of the liquid metal, liquid metal flowing during cutting can be avoided, and laser cutting is facilitated.
Description
Technical field
The present invention relates to the laser cutting in liquid metal field, relate in particular to and be a kind ofly applied to the cooling device of laser cutting liquid metal and use this cooling device to cut the processing technology of liquid metal.
Background technology
Liquid metal (a kind of novel metal alloy) has the unique atomic structure that is similar to glass, has unique noncrystalline molecular structure, completely different with the crystalline texture of conventional metals.At present liquid metal, owing to there being the features such as high rigidity, high abrasion, fusing point are low, is all generally moulding after melting.Because liquid metal fusing point is low, also there is after Stimulated Light effect toughness fluid simultaneously and flow, flowing instability, thus cause the inconvenience of laser cutting liquid metal, and the otch fluid of the liquid metal cutting out is many, burr is large, and effect is bad.Laser cutting is subject to very large constraint in the application in liquid metal field, and the processing technology of laser cutting liquid metal is always at the experimental stage.
Summary of the invention
In view of this, the technical problem to be solved in the present invention is to provide a kind of cooling device and processing technology of laser cutting liquid metal, can avoid liquid metal in cutting process to flow, and is convenient to laser cutting.
For solving the problems of the technologies described above, technical scheme of the present invention is achieved in that
A kind of cooling device that is applied to laser cutting liquid metal, it comprises cooling tube, tuyere and machine table, described cooling tube is connected with tuyere, add man-hour, this tuyere is right against the liquid metal workpiece in described machine table, makes the water paint flowing out from tuyere just in time fall the incision of liquid metal.
As preferred version, described cooling device also comprises the water tank that holds water paint, and this water tank is arranged at the below of described machine table, the water paint in this machine table is back in this water tank, and this water tank is connected with cooling tube; Under power drive, the water paint in this water tank rises in this cooling tube, and flows out from described tuyere.
As preferred version, described machine table is obliquely installed.
Another kind of technical scheme provided by the invention: a kind of processing technology that uses described cooling device to cut liquid metal, this processing technology comprises the operating procedure of the laser cutting liquid metal of all solid state laser transmitting, in this operating procedure, in described cooling device, flow out water paint and fall the incision of liquid metal.
As preferred version, described water paint can recycle.
As preferred version, the wave-length coverage of the described laser of cutting liquid metal is 1055 ~ 1075nm.
As preferred version, the described sharp light wavelength of cutting liquid metal is 1064nm.
As preferred version, the zoom multiple of the collimating optical system of described all solid state laser is 10 ~ 15 times.
As preferred version, the focal length of the condenser lens of described all solid state laser is 100mm.
The technique effect that the present invention reaches is as follows: the present invention is in the operating procedure of laser cutting liquid metal, use the water paint of described cooling device outflow to fall the incision of liquid metal, can make could not flow and just solidify rapidly after liquid metal melting, facilitate effective cutting of laser liquid towards metal.And water paint can recycle, and economizes on resources, and cuts down finished cost, reduce and pollute.In addition, select the colimated light system zoom multiple of 10 ~ 15 times and the condenser lens of 100mm, can make the power density of laser large, the area that cuts hot spot on liquid metal is little, adopt the optical maser wavelength of 1064nm simultaneously, be easy to liquid metal and absorb, thereby can reduce otch fluid and reduce burr.And, use cooling device of the present invention, can make water paint recycle, economize on resources, reduce production costs.
Accompanying drawing explanation
Fig. 1 is the stereogram of cooling device of the present invention;
Fig. 2 is the stereogram of another angle of cooling device of the present invention;
Fig. 3 is the stereogram of the another angle of cooling device of the present invention;
Fig. 4 is the structural representation of all solid state laser;
Fig. 5 is the cutting effect comparison diagram of different factors.
[critical piece symbol description]
1 cooling device
11 cooling tubes
12 tuyeres
13 machine table
14 water tanks
2 all solid state lasers
21 pump source laser diodes
22 coupling optical systems
23 resonators
231 fiber gratings
232 gain fibres
233 reflective mirrors
24 collimating optical systems
25 scanning systems
26 condenser lenses.
The specific embodiment
As shown in Fig. 1 ~ Fig. 3, the cooling device 1 that the present invention is applied to laser cutting liquid metal comprises cold flexible pipe 11, tuyere 12, machine table 13 and the water tank 14 of going, described cooling tube 11 is connected with tuyere 12, add man-hour, described tuyere 12 is right against the liquid metal workpiece in described machine table, makes the water paint flowing out from tuyere 12 just in time fall the incision of liquid metal.Described water tank 14 is arranged at the below of machine table 13, and the water paint in this machine table 13 can be back in water tank 14; And this water tank 14 is connected with cooling tube 11, under power drive, the water paint in water tank 14 can rise in this cooling tube 11, and flows out from described tuyere 12.Thereby the EGR that forms water paint, recycles water paint, can economize on resources, reduce and pollute, and can cut down finished cost.
Described machine table 13 is obliquely installed, and the water paint being conducive in machine table 13 is back in water tank 14.
The processing technology that the present invention uses cooling device to cut liquid metal comprises the operating procedure of the laser cutting liquid metal that all solid state laser 2 as shown in Figure 4 launches, in this operating procedure, in described cooling device 1, flow out water paint and fall the incision of liquid metal.
Because a fusing point single pulse energy low and laser of liquid metal can reach tens joules, make the temperature on liquid metal surface sharply increase moment and can be molten condition, therefore in cutting process, need the constantly incision at liquid metal to drip water paint.Water paint both can be beneficial to the absorption of laser energy, can accelerate again the condensation of liquid metal.Can make like this could not flow and just solidify rapidly after liquid metal melting, be convenient to effective cutting of laser liquid towards metal.
Wave-length coverage is that the laser of 1055 ~ 1075nm is easy to liquid metal absorption, and optimal wavelength is 1064nm.
As shown in Figure 4, all solid state laser 2 of emission wavelength 1064nm laser comprises tactic pump source laser diode 21, coupling optical system 22, resonator 23, collimating optical system 24, scanning system 25 and focusing system 26 successively.The laser that pump source laser diode 21 is launched is incident to coupling optical system 22, coupling optical system 22 does shaping and rearranges and input to resonator 23 laser, laser improves energy and is incident to collimating optical system 24 through resonator 23, what collimating optical system 24 made laser maximal efficiency is coupled into scanning system 25, penetrates to cut liquid metal finally by crossing condenser lens 26.
Wherein resonator 23 comprises fiber grating 231, gain fibre 232 and reflective mirror 233, and fiber grating 231 is all vertical with the axis of gain fibre 232 with reflective mirror 233, and reflective mirror 233 can transmissive portion optical signal.Be incident to the optical signal constantly reflection between fiber grating 231 and reflective mirror 233 in resonator 23, and in reflection process, via the continuous amplifying optical signals of gain fibre 232, the optical signal energy transmiting from reflective mirror 33 improved.
The focal length of condenser lens 26 is generally chosen for F=100mm, can make the power density of Output of laser larger, and the cutting facula area on liquid metal is less, is easy to cut liquid metal.
Affect the multiple because have of liquid metal cutting effect, for example have or not zoom multiple and the focal length of condenser lens etc. of water paint, collimating optical system, be illustrated in figure 5 the cutting effect comparison diagram (mark: the picture shown in Fig. 5 is all taken under the microscope) of different factors.
As shown in Figure 5,1) when the focal length of the zoom multiple at collimating optical system identical (zoom multiple can be one of them of 5 times, 8 times, 10 times or 15 times) and condenser lens is 100nm, the cutting effect that does not add water paint is obviously to have burr, particularly after melting, form the fluid of certain area in cross section, and add after water paint, water paint promotes liquid metal surface to play fine cooling effect to laser absorption simultaneously, processing is relatively fine and smooth, the fluid of incision reduces, and burr is also relatively little.2) in the situation that of all adding water paint in cutting process, laser is for the zoom multiple of different collimating optical systems, characterize power density out different, act on that on liquid metal, to cut the area of hot spot also different, therefore the fine and smooth degree of processing is not identical yet.And according to mean power=single pulse energy * repetition rate, pulse peak power=single pulse energy/pulsewidth, power density=pulse peak power/facula area can obtain, at the zoom multiple of collimating optical system between 10 ~ 15 times, and when the focal length F of condenser lens is 100nm, facula area is little, and power density is large, be easy to material and effectively absorb and solidify rapidly under water paint effect, thereby realize the little good result of otch less fluid burr.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.
Claims (9)
1. one kind is applied to the cooling device of laser cutting liquid metal, it is characterized in that, it comprises cooling tube, tuyere and machine table, described cooling tube is connected with tuyere, add man-hour, this tuyere is right against the liquid metal workpiece in described machine table, makes the water paint flowing out from tuyere just in time fall the incision of liquid metal.
2. cooling device according to claim 1, it is characterized in that, described cooling device also comprises the water tank that holds water paint, and this water tank is arranged at the below of described machine table, water paint in this machine table is back in this water tank, and this water tank is connected with cooling tube; Under power drive, the water paint in this water tank rises in this cooling tube, and flows out from described tuyere.
3. cooling device according to claim 1, is characterized in that, described machine table is obliquely installed.
4. liquid metal is cut in a use processing technology according to the cooling device described in any one in claim 1 ~ 3, this processing technology comprises the operating procedure of the laser cutting liquid metal of all solid state laser transmitting, it is characterized in that, in this operating procedure, in described cooling device, flow out water paint and fall the incision of liquid metal.
5. processing technology according to claim 4, is characterized in that, described water paint can recycle.
6. processing technology according to claim 4, is characterized in that, the wave-length coverage of the described laser of cutting liquid metal is 1055 ~ 1075nm.
7. processing technology according to claim 6, is characterized in that, the described sharp light wavelength of cutting liquid metal is 1064nm.
8. processing technology according to claim 4, is characterized in that, the zoom multiple of the collimating optical system of described all solid state laser is 10 ~ 15 times.
9. processing technology according to claim 4, is characterized in that, the focal length of the condenser lens of described all solid state laser is 100mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310497557.6A CN103817435B (en) | 2013-10-22 | 2013-10-22 | Be applied to cooling device and the processing technology of laser cutting liquid metal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310497557.6A CN103817435B (en) | 2013-10-22 | 2013-10-22 | Be applied to cooling device and the processing technology of laser cutting liquid metal |
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| CN103817435A true CN103817435A (en) | 2014-05-28 |
| CN103817435B CN103817435B (en) | 2016-05-25 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5073694A (en) * | 1991-02-21 | 1991-12-17 | Synthes (U.S.A.) | Method and apparatus for laser cutting a hollow metal workpiece |
| JPH06297173A (en) * | 1993-04-13 | 1994-10-25 | Masao Yoshida | Welding method for metal by laser beam machining |
| US5639012A (en) * | 1994-06-23 | 1997-06-17 | Elpatronic Ag | Process and device for the posttreatment of welded compound panels |
| CN201817550U (en) * | 2010-08-09 | 2011-05-04 | 东莞理工学院 | Laser cladding and shaping equipment |
| CN202684327U (en) * | 2012-01-19 | 2013-01-23 | 昆山思拓机器有限公司 | Water supply device for laser wet cutting machining |
| CN103011574A (en) * | 2012-11-30 | 2013-04-03 | 扬州宁达贵金属有限公司 | Automatic cutting separator for waste CRT (cathode ray tube) display |
| CN103071933A (en) * | 2013-01-18 | 2013-05-01 | 江南大学 | Laser composite ceramic cutting device and method |
-
2013
- 2013-10-22 CN CN201310497557.6A patent/CN103817435B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5073694A (en) * | 1991-02-21 | 1991-12-17 | Synthes (U.S.A.) | Method and apparatus for laser cutting a hollow metal workpiece |
| JPH06297173A (en) * | 1993-04-13 | 1994-10-25 | Masao Yoshida | Welding method for metal by laser beam machining |
| US5639012A (en) * | 1994-06-23 | 1997-06-17 | Elpatronic Ag | Process and device for the posttreatment of welded compound panels |
| CN201817550U (en) * | 2010-08-09 | 2011-05-04 | 东莞理工学院 | Laser cladding and shaping equipment |
| CN202684327U (en) * | 2012-01-19 | 2013-01-23 | 昆山思拓机器有限公司 | Water supply device for laser wet cutting machining |
| CN103011574A (en) * | 2012-11-30 | 2013-04-03 | 扬州宁达贵金属有限公司 | Automatic cutting separator for waste CRT (cathode ray tube) display |
| CN103071933A (en) * | 2013-01-18 | 2013-05-01 | 江南大学 | Laser composite ceramic cutting device and method |
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| CN103817435B (en) | 2016-05-25 |
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Address after: Room a1002, 10 / F, building a, building 3, Longgang Tian'an Digital Innovation Park, intersection of Qinglin West Road and Huangge North Road, Longcheng street, Longgang District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Huagong new energy equipment Co.,Ltd. Address before: 518074 No. 1002, floor 10, block a, building 3, Tian'an Digital City, Longgang central city, Longgang District, Shenzhen, Guangdong Province Patentee before: SHENZHEN HUAGONG LASER EQUIPMENT Co.,Ltd. |
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