CN113369694B - Double-beam coupling laser additive forming method and device - Google Patents
Double-beam coupling laser additive forming method and device Download PDFInfo
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- CN113369694B CN113369694B CN202110448400.9A CN202110448400A CN113369694B CN 113369694 B CN113369694 B CN 113369694B CN 202110448400 A CN202110448400 A CN 202110448400A CN 113369694 B CN113369694 B CN 113369694B
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- 239000000654 additive Substances 0.000 title claims abstract description 45
- 230000000996 additive effect Effects 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 34
- 230000008878 coupling Effects 0.000 title claims abstract description 33
- 238000010168 coupling process Methods 0.000 title claims abstract description 33
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 30
- 239000000758 substrate Substances 0.000 claims abstract description 24
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 230000004044 response Effects 0.000 claims abstract description 7
- 238000005211 surface analysis Methods 0.000 claims abstract description 7
- 238000005457 optimization Methods 0.000 claims abstract description 5
- 239000000843 powder Substances 0.000 claims description 23
- 238000009826 distribution Methods 0.000 claims description 17
- 239000000835 fiber Substances 0.000 claims description 11
- 230000009977 dual effect Effects 0.000 claims description 8
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 230000010354 integration Effects 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 6
- 238000004364 calculation method Methods 0.000 claims description 4
- 238000009792 diffusion process Methods 0.000 claims description 3
- 239000004065 semiconductor Substances 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 2
- 238000007493 shaping process Methods 0.000 claims 2
- 230000008646 thermal stress Effects 0.000 abstract description 6
- 238000005253 cladding Methods 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
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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
- B23K26/34—Laser welding for purposes other than joining
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/10—Sintering only
- B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
-
- 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
- B23K26/34—Laser welding for purposes other than joining
- B23K26/342—Build-up welding
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
A double-beam coupling laser additive forming method and a device thereof are provided, the forming method comprises the following steps: determining the type, the maximum power and the double-beam mode of the laser; calculating the average power density of the laser in the forming area according to the double-beam radius relation and the power density superposition model; solving the analytic formula of the temperature field of the infinite substrate heated by the point heat source through a three-dimensional heat conduction formula; converting the rectangular coordinate system into a cylindrical coordinate system to obtain an analytic formula of a temperature field of the infinite substrate heated by the finite surface heat source; according to the finite surface heat source heating infinite base plate temperature field analytic expression, solving the temperature gradient between two points when the material is not melted; obtaining the optimal parameter range of the double-beam coupling by using the temperature gradient as an optimization target and a response surface analysis method; and performing double-beam coupling laser additive forming. The forming device comprises a main laser and an auxiliary laser which are connected with two QBH joints of the cladding head, and laser beam combination is realized through a lens group. The invention is suitable for reducing the thermal stress of various laser additive forming parts.
Description
Technical Field
The invention belongs to the field of laser additive manufacturing, and particularly relates to a double-beam coupling laser additive forming method and device.
Background
The laser additive manufacturing technology is an advanced laser processing forming technology, and comprises the technologies of laser three-dimensional forming, selective laser melting and the like, wherein the laser three-dimensional forming adopts a coaxial powder feeding mode, the rapid forming of metal parts can be realized, the forming size is not limited, and the laser additive manufacturing technology is widely applied to the industries of aerospace, automobiles, medical treatment and the like.
In the laser forming process, due to the fact that laser energy density is high and scanning speed is high, the phenomena of rapid heating and rapid cooling exist in the laser additive manufacturing process, large thermal stress is generated inside materials, and finally a formed part is easy to deform and crack. In order to control the internal thermal stress of the material, a preheating slow cooling technology is introduced, so that the unmelted temperature gradient of the material is reduced, the generation of cracks is inhibited, and the quality of a formed piece is improved.
At present, the common preheating mode is a mode of overall preheating by an induction coil or overall heat preservation by a substrate. However, for five-axis material-increasing and material-reducing composite manufacturing equipment, a preheating device is difficult to integrate, and for a formed part with a complex path, the integral preheating is easy to cause uneven preheating along with the increase of the number of additive layers.
Disclosure of Invention
The invention aims to solve the problem of thermal stress control in the laser additive manufacturing process in the prior art, and provides a double-beam coupling laser additive forming method and device, which are suitable for reducing the thermal stress of different laser additive forming parts.
In order to achieve the purpose, the invention has the following technical scheme:
a double-beam coupling laser additive forming method comprises the following steps:
determining the type, the maximum power and a double-beam mode of a laser according to the processing requirement and a laser theoretical distribution model;
calculating the average power density of the laser in the forming area according to the double-beam radius relation and the power density superposition model;
solving the analytic formula of the temperature field of the infinite substrate heated by the point heat source through a three-dimensional heat conduction formula;
converting the rectangular coordinate system into a cylindrical coordinate system to obtain an analytic formula of a temperature field of the infinite substrate heated by the finite surface heat source;
according to the finite surface heat source heating infinite base plate temperature field analytic expression, solving the temperature gradient between two points when the material is not melted;
obtaining the optimal parameter range of the double-beam coupling by using the temperature gradient as an optimization target and a response surface analysis method;
and performing double-beam coupling laser additive forming.
As a preferred scheme of the double-beam coupling laser additive forming method, the type of the laser is selected from a semiconductor laser or a fiber laser, and the maximum power is 1000-6000W; the main beam of the double-beam mode adopts a single-mode Gaussian beam, and the auxiliary beam adopts a multi-mode ultrahigh Gaussian beam.
As a preferable scheme of the double-beam coupling laser additive forming method, the power of the main beam is defined as P1The radius of the main beam is r1And the power of the auxiliary beam is P2Radius r of the auxiliary beam2；
The dual-beam radius relation and power density superposition model is as follows:
setting the power density distribution of the main light beam to conform to the form of Gaussian distribution, and satisfying the following conditions:
wherein A is the absorption coefficient of the substrate, and r is the distance from one point of the substrate to the center of the light beam;
the power density distribution of the auxiliary beam is set to conform to a super-Gaussian distribution form, and the following requirements are met:
as a preferable aspect of the dual-beam-coupled laser additive forming method of the present invention, the calculating the average laser power density of the forming area includes the following steps:
step 2.1, setting the forming area to be circular, wherein the radius of the circular area is as large as that of the main beam, and calculating the average laser power density of the forming area by utilizing polar coordinate integration;
step 2.2, the radius of the main beam satisfies 1mm < r1<3mm, radius r of the auxiliary beam2Is equal to k.r1The absorption coefficient A of the substrate is 0.3, and the average power density of the main light beam satisfies the following conditions:
when k is more than 1 and less than or equal to 2, the average power density of the auxiliary beam in the forming area satisfies the following conditions:
wherein
For incomplete gamma function, when k is more than 2, the average power density of the auxiliary beam satisfies:
as the inventionIn a preferred embodiment of the beam-coupled laser additive forming method, assuming that the material satisfies isotropy, the three-dimensional heat conduction formula satisfies:
and t is the irradiation time, and the analytical formula of the temperature field of the point heat source heating infinite substrate is obtained by utilizing Fourier transform solution.
As a preferred scheme of the dual-beam coupling laser additive forming method of the present invention, an expansion calculation formula solved by a three-dimensional heat conduction formula is as follows:
wherein α is a thermal diffusion coefficient of the material, and satisfies α ═ λ/(ρ · c)p)；
λ is the thermal conductivity of the material, ρ is the density of the material, cpIs the specific heat capacity at constant pressure of the material.
As a preferred scheme of the double-beam coupling laser additive forming method, the analytic formula of a point heat source rectangular coordinate system meets the following requirements:
convert into the cylindrical coordinate system, satisfy:
wherein Q is the heat source intensity, and is set under a cylindrical coordinate system
QmFor the surface heat source intensity, an analytical formula of the temperature of the infinite substrate heated by the finite surface heat source is solved through integration, and the following formula is satisfied:
the invention further provides a double-beam coupling laser additive forming device which comprises a main laser and an auxiliary laser, wherein the main laser and the auxiliary laser are respectively connected with the two QBH joints of the cladding head through a main laser fiber and an auxiliary laser fiber, laser beam combination is realized through a lens group, and then additive forming is carried out on the powder flow on a substrate of a machine tool through a protective lens, protective gas and a nozzle in sequence.
As a preferred scheme of the double-beam coupling laser additive forming device, powder flow is subjected to four-way powder feeding by a powder feeder through a powder splitter, the main laser, the auxiliary laser, the machine tool and the powder feeder are all connected with a numerical control system, and the numerical control system performs coordination control.
As a preferred scheme of the dual-beam coupling laser additive forming device, the lens group comprises a first collimating lens, a reflector, a second collimating lens, a double-sided converging lens and a converging lens;
the auxiliary light beam of the auxiliary laser is changed into parallel light beam through the first collimating lens, the main light beam of the main laser is changed in direction through the reflector, and then is changed into parallel light beam through the second collimating lens; the two-sided converging lens realizes the convergence of the auxiliary light beam and the main light beam, and finally the auxiliary light beam and the main light beam are coupled and output through the converging lens.
Compared with the prior art, the invention has the following beneficial effects: the method comprises the steps of obtaining an analytic formula of a limited circular surface light beam in a normal temperature field according to a three-dimensional heat conduction formula, taking the average power density of laser in a forming area as a constraint condition, taking an unmelted temperature gradient as an optimization condition, adopting a response surface analysis method, and obtaining a double-light-beam coupling parameter combination suitable for different materials through multiple regression fitting. The invention has wide application range and effectively reduces the thermal stress of different laser additive forming parts.
Compared with the prior art, the double-beam coupling laser additive forming device can realize double-beam coupling laser additive forming by installing the lens group and the matched cladding head on the existing equipment, and has the advantages of simple structure and convenient manufacture.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flowchart of a dual beam coupled laser additive forming method according to an embodiment of the present invention;
FIG. 2 is a diagram illustrating a distribution of spot intensities of coupled beams according to an embodiment of the present invention;
FIG. 3 is a temperature profile of an embodiment of the present invention;
FIG. 4 is a schematic view of a lens assembly according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a dual-beam-coupled laser additive forming apparatus according to an embodiment of the present invention;
in the drawings: 1-a master laser; 2-an auxiliary laser; 3-a main laser fiber; 4-auxiliary laser fiber; 5-a first QBH linker; 6-a second QBH linker; 7-a lens group; 8-protective glasses; 9-protective gas; 10-a nozzle; 11-powder flow; 12-a machine tool; 13-a numerical control system; 14-powder divider; 15-four-way powder feeding; 16-a powder feeder;
21-an auxiliary beam; 22-double-sided converging lens; 23-a main beam; 24-a mirror; 25-a converging lens.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the accompanying drawings, 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 examples without making any creative effort, shall fall within the protection scope of the present invention.
A double-beam coupling laser additive forming method comprises the following steps:
step 1: according to the processing requirement and a laser beam theoretical distribution model, the types, the maximum powers and the double-beam modes of the two lasers are determined by combining the past experience. The operation of step 1 specifically comprises:
step 1.1: the laser device is a semiconductor laser device or a fiber laser device, and the maximum power is 1000W-6000W;
step 1.2: the main beam is a single-mode Gaussian beam, and the auxiliary beam is a multi-mode super-Gaussian beam.
Step 2: defining physical parameters of the dual beams, including the power P of the main beam1Radius r1And the power P of the auxiliary beam2Radius r2Setting the power density distribution of the main light beam to conform to the form of Gaussian distribution, and satisfying the following conditions:
wherein, A is the absorption coefficient of base plate, and r is base plate one point apart from the beam center distance, sets for the power density distribution of auxiliary beam and accords with the form of super gaussian distribution, satisfies:
the average power density of the shaped area is calculated from a mathematical model and the light intensity of the coupled beam is shown in figure 2. The operation of step 2 specifically comprises:
step 2.1: setting the forming area to be circular, wherein the radius of the circular area is as large as that of the main light beam, and calculating the average laser power density of the forming area by utilizing polar coordinate integration;
step 2.2: radius of main beam r1，1mm＜r1Less than 3mm, radius r of the auxiliary beam2Is k.r1The absorption coefficient A of the substrate is 0.3, and the average power density of the main light beam satisfies the following conditions:
when k is more than 1 and less than or equal to 2, the average power density of the auxiliary beam in the forming area meets the following conditions:
wherein
When k is more than 2 and less than or equal to 3, the average power density of the auxiliary beam satisfies the following conditions:
and step 3: assuming that the material satisfies isotropy, the three-dimensional heat conduction formula satisfies:
where t is the irradiation time, α is the thermal diffusivity of the material,
λ is the thermal conductivity of the material, ρ is the density of the material, cpThe temperature field analytical formula of the infinite substrate heated by the point heat source is obtained by Fourier transform according to the constant-pressure specific heat capacity of the material.
Specifically, the step 3 comprises the following steps:
step 3.1: the expansion is calculated as:
step 3.2: alpha is the thermal diffusivity of the material,
λ is the thermal conductivity of the material, ρ is the density of the material, cpIs the specific heat capacity at constant pressure of the material.
And 4, step 4: and converting the rectangular coordinate system into a cylindrical coordinate system to obtain a heat source temperature field analytic expression of a corresponding point, and integrating to obtain a finite surface heat source heating infinite substrate temperature field analytic expression. The operation of step 4 specifically comprises:
step 4.1: the point heat source rectangular coordinate system analytic expression meets the following requirements:
and 4.2: convert into the cylindrical coordinate system, satisfy:
wherein Q is the heat source intensityUnder a cylindrical coordinate system, let
QmFor the surface heat source intensity, the temperature analytic formula of the infinite substrate heated by the finite surface heat source is solved by integration, and the following requirements are met:
and 5: and solving the temperature gradient between two unmelted points of the material, and setting the influence factors to be three-factor four-level by a response surface analysis method to obtain the optimal parameter range of the double-beam coupling meeting the requirements.
Step 6: according to the calculation result, the optimal parameter range of the double-beam coupling meeting the requirements is obtained through a response surface analysis method, the obtained numerical values are filled in software for calculation, and the result is output, specifically as shown in fig. 3, the surface temperature distribution condition of the substrate after being irradiated by the laser beam in the embodiment of the invention is shown.
And 7: the lens is used for designing the lens group and the matched cladding head, so that the convergence of the double beams is realized.
Referring to fig. 4-5, a dual-beam coupling laser additive forming device comprises a main laser 1 and an auxiliary laser 2, wherein the main laser 1 and the auxiliary laser 2 are respectively connected with two QBH connectors of a cladding head through a main laser fiber 3 and an auxiliary laser fiber 4, laser beam combination is realized through a lens group 7, and then the laser beam passes through a protective lens 8, a protective gas 9 and a nozzle 10 in sequence and reaches a substrate of a machine tool 12 to perform additive forming on a powder flow 11. The powder flow 11 is subjected to four-way powder feeding 15 by a powder feeder 16 through a powder splitter 14, the main laser 1, the auxiliary laser 2, the machine tool 12 and the powder feeder 16 are all connected with a numerical control system 13, and the numerical control system 13 performs coordination control. The lens group 7 of the present invention comprises a first collimating lens, a reflecting mirror 24, a second collimating lens, a double-sided converging lens 22 and a converging lens 25; the auxiliary beam 21 of the auxiliary laser 2 is changed into a parallel beam through a first collimating lens, the main beam 23 of the main laser 1 is changed in direction through a reflector 24, and then is changed into a parallel beam through a second collimating lens; the double-sided converging lens 22 converges the auxiliary beam 21 and the main beam 23, and finally the auxiliary beam and the main beam are coupled and output through the converging lens 25.
The invention provides a double-beam coupling laser additive forming method and device, which adopt an autonomously designed beam mirror group to realize double-beam convergence, obtain a finite circular surface beam normal temperature field analytic formula according to a three-dimensional heat conduction formula, use the laser average power density of a forming area as a constraint condition, use an unmelted temperature gradient as an optimization condition, adopt a response surface analysis method, and obtain a double-beam coupling parameter combination suitable for different materials through multiple regression fitting.
The present invention has been further described with reference to specific embodiments, but it should be understood that the detailed description should not be construed as limiting the spirit and scope of the present invention, and various modifications made to the above-described embodiments by those of ordinary skill in the art after reading this specification are within the scope of the present invention.
Claims (10)
1. A double-beam coupling laser additive forming method, double-beam coupling means that the auxiliary beam emitted by the auxiliary laser and the main beam emitted by the main laser are coupled and output after being converged, and the radius of the auxiliary beam is larger than that of the main beam;
the method is characterized by comprising the following steps:
determining the type, the maximum power and a double-beam mode of a laser according to the processing requirement and a laser theoretical distribution model;
calculating the average power density of the laser in the forming area according to the double-beam radius relation and the power density superposition model;
solving the analytic formula of the temperature field of the infinite substrate heated by the point heat source through a three-dimensional heat conduction formula;
converting the rectangular coordinate system into a cylindrical coordinate system to obtain an analytic formula of a temperature field of the infinite substrate heated by the finite surface heat source;
according to the finite surface heat source heating infinite base plate temperature field analytic expression, solving the temperature gradient between two points when the material is not melted;
obtaining the optimal parameter range of the double-beam coupling by using the temperature gradient as an optimization target and a response surface analysis method;
and performing double-beam coupling laser additive forming.
2. The method of claim 1, wherein:
the laser type is selected from a semiconductor laser or a fiber laser, and the maximum power is 1000-6000W;
the main beam of the double-beam mode adopts a single-mode Gaussian beam, and the auxiliary beam adopts a multi-mode ultrahigh Gaussian beam.
3. The method of claim 1, wherein: defining the power of the main beam as P1The radius of the main beam is r1And the power of the auxiliary beam is P2Radius r of the auxiliary beam2；
The dual-beam radius relationship and power density superposition model is as follows:
setting the power density distribution of the main light beam to conform to the form of Gaussian distribution, and satisfying the following conditions:
wherein A is the absorption coefficient of the substrate, and r is the distance from one point of the substrate to the center of the light beam;
setting the power density distribution of the auxiliary beam to accord with a super-Gaussian distribution form, and satisfying the following conditions:
4. the method of dual beam coupling laser additive forming of claim 3 wherein the calculating the forming area laser average power density comprises the steps of:
step 2.1, setting the forming area to be circular, wherein the radius of the circular area is as large as that of the main beam, and calculating the average laser power density of the forming area by utilizing polar coordinate integration;
step 2.2, the radius of the main beam satisfies 1mm < r1Less than 3mm, radius r of the auxiliary beam2Is equal to k.r1The absorption coefficient A of the substrate is 0.3, and the average power density of the main light beam satisfies the following conditions:
when k is more than 1 and less than or equal to 2, the average power density of the auxiliary beam in the forming area satisfies the following conditions:
wherein
For incomplete gamma function, when k is more than 2, the average power density of the auxiliary beam satisfies:
5. the dual beam-coupled laser additive forming method of claim 1, wherein: assuming that the material satisfies isotropy, the three-dimensional heat conduction formula satisfies:
wherein alpha is the thermal diffusion coefficient of the material, t is the irradiation time, and the analytical formula of the temperature field of the point heat source heating infinite substrate is obtained by utilizing Fourier transform to solve.
6. The dual beam coupling laser additive forming method of claim 5, wherein:
the developed calculation solved by the three-dimensional heat transfer equation is as follows:
wherein α is a thermal diffusion coefficient of the material, and satisfies α ═ λ/(ρ · c)p)；
λ is the thermal conductivity of the material, ρ is the density of the material, cpIs the specific heat capacity at constant pressure of the material.
7. The dual beam coupling laser additive forming method of claim 6, wherein:
the point heat source rectangular coordinate system analytic expression meets the following requirements:
converting into a cylindrical coordinate system, and satisfying:
wherein Q is the heat source intensity, and is set under a cylindrical coordinate system
QmFor the surface heat source intensity, an analytical formula of the temperature of the infinite substrate heated by the finite surface heat source is solved through integration, and the following formula is satisfied:
8. a dual-beam-coupled laser additive forming apparatus implementing the dual-beam-coupled laser additive forming method of any one of claims 1-7, wherein: including main laser instrument (1) and supplementary laser instrument (2), main laser instrument (1) and supplementary laser instrument (2) connect two QBH that melt the covering head through main laser fiber (3) and supplementary laser fiber (4) respectively and connect, realize through mirror group (7) that the laser is restrainted, flow (11) to powder and carry out the vibration material disk on arriving the base plate of lathe (12) through protective glass (8), protective gas (9) and nozzle (10) in proper order again.
9. The dual beam-coupled laser additive shaping device of claim 8, wherein: the powder flow (11) is subjected to four-way powder feeding (15) by a powder feeder (16) through a powder divider (14), the main laser (1), the auxiliary laser (2), the machine tool (12) and the powder feeder (16) are all connected with a numerical control system (13), and the numerical control system (13) performs coordination control.
10. The dual beam-coupled laser additive shaping device according to claim 8, wherein the lens group (7) comprises a first collimating lens, a reflecting mirror (24), a second collimating lens, a double-sided converging lens (22), and a converging lens (25);
an auxiliary light beam (21) of the auxiliary laser (2) is changed into a parallel light beam through a first collimating lens, a main light beam (23) of the main laser (1) is changed in direction through a reflector (24), and then the main light beam is changed into the parallel light beam through a second collimating lens; the double-sided converging lens (22) realizes the convergence of the auxiliary beam (21) and the main beam (23), and finally the auxiliary beam and the main beam are coupled and output through the converging lens (25).
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108453261A (en) * | 2018-06-21 | 2018-08-28 | 西安增材制造国家研究院有限公司 | A kind of device that there is the laser gain material of preheating and slow cooling function to manufacture |
| CN108875114A (en) * | 2017-09-07 | 2018-11-23 | 湖南大学 | A kind of focusing laser beam Characteristic parameter identification method |
| CN110976865A (en) * | 2019-12-19 | 2020-04-10 | 西安增材制造国家研究院有限公司 | Solidification structure and forming stress regulation and control method for laser coaxial powder feeding additive manufacturing |
| CN111046535A (en) * | 2019-11-25 | 2020-04-21 | 暨南大学 | Laser processing heat distribution calculation method |
| CN111627503A (en) * | 2020-05-27 | 2020-09-04 | 燕山大学 | Prediction method of stress field in laser cladding manufacturing process of alumina ceramic matrix composite coating |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107475709A (en) * | 2017-06-05 | 2017-12-15 | 广东工业大学 | The shaping impact of double laser beam deposition forges compound increasing material manufacturing method |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108875114A (en) * | 2017-09-07 | 2018-11-23 | 湖南大学 | A kind of focusing laser beam Characteristic parameter identification method |
| CN108453261A (en) * | 2018-06-21 | 2018-08-28 | 西安增材制造国家研究院有限公司 | A kind of device that there is the laser gain material of preheating and slow cooling function to manufacture |
| CN111046535A (en) * | 2019-11-25 | 2020-04-21 | 暨南大学 | Laser processing heat distribution calculation method |
| CN110976865A (en) * | 2019-12-19 | 2020-04-10 | 西安增材制造国家研究院有限公司 | Solidification structure and forming stress regulation and control method for laser coaxial powder feeding additive manufacturing |
| CN111627503A (en) * | 2020-05-27 | 2020-09-04 | 燕山大学 | Prediction method of stress field in laser cladding manufacturing process of alumina ceramic matrix composite coating |
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