CN103192080A - Selective laser sintering forming method - Google Patents
Selective laser sintering forming method Download PDFInfo
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- CN103192080A CN103192080A CN2013101535343A CN201310153534A CN103192080A CN 103192080 A CN103192080 A CN 103192080A CN 2013101535343 A CN2013101535343 A CN 2013101535343A CN 201310153534 A CN201310153534 A CN 201310153534A CN 103192080 A CN103192080 A CN 103192080A
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- laser sintering
- sintering
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- 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
The invention relates to a selective laser sintering forming method and a powder material applied to the same. The selective laser sintering forming method comprises the following steps of: (1) preparing the powder material used for the selective laser sintering forming method; (2) drawing the three-dimensional outline of a model to be prepared by using three-dimensional cartographic software, inputting into a laser sintering forming machine, and carrying out layered calculation on the three-dimensional outline according to set layer thickness through the control software of the laser sintering forming machine to obtain multilayer sectional vectograph information and each sectional laser scanning path; (3) initializing the parameters of the laser sintering forming machine according to the model; (4) carrying out laser scanning through the laser sintering forming machine, and paving a new layer of powder materials after one layer of powder materials are completely sintered for sintering; and (5) repeating step (4) till a last layer of powder materials is completely sintered. The selective laser sintering forming method disclosed by the invention has the advantages of sintering at normal temperature, shortened production period and good physical characteristic and low buckling deformation degree of the formed model.
Description
Technical field
The present invention relates to a kind of quick molding method, be specifically related to a kind of selective laser sintering and moulding method.
Background technology
In recent years essential industry country in the world's greatly develops rapid shaping technique, and wherein the important techniques of Chu Xianing has: photocuring moulding technology (SLA), selective laser sintering and moulding technology (SLS), laminated solid mass manufacturing technology (LOM), fusion sediment rapid shaping technique, 3-D spraying binding technology (3DP), photomask method, the manufacturing of trajectory particulate etc.(Selective Laser Sintering, SLS) rapid shaping technique is called the precinct laser sintering technology again to selective laser sintering, is to utilize low-melting-point metal or nonmetallic powder material sintering under the laser irradiation, is piled into type under computer control layer by layer.The whole technique process comprises: the repeatedly circulation that the foundation of cad model and data are handled, spread powder and laser scanning sintering, and three-dimensional structure is printed the after-treatment after finishing etc.The advantage of this technology is, material is selected various, and end properties is changeable, and be not subjected to the restriction of model geometric shape, without any need for moulds of industrial equipment, do not need to increase support structure designs, can shorten the R﹠D cycle of product, reduce production costs, improve the competitiveness of product in market.Since 2012, the SLS technology becomes the important development branch of world's rapid shaping technique.
Current, generally want strict control area temperature during SLS technology sintered polymeric dusty material, at first need molding space is preheated to more than 200 ℃.Also to wait for cooling in nearly 12 hours after laser sintered the finishing; So shaping area must cause the working bin of airtight thermal insulation.And the model product strength is very weak, need ooze wax or mixes reinforcement such as resin and handle according to instructions for use.Therefore, the shortcoming that exists in the prior art is necessary prior art is made improvements.
Summary of the invention
The objective of the invention is to overcome shortcoming of the prior art with not enough, a kind of simple to operate, relevantly lenient to environmental requirement, selective laser sintering and moulding method that can realize rapid shaping at normal temperatures is provided.
The present invention realizes by following technical scheme: a kind of selective laser sintering and moulding method, and described selective laser sintering and moulding method may further comprise the steps:
(1) prepares dusty material for the selective laser sintering and moulding method;
(2) use three-dimensional graphics software to draw the three-D profile of model to be prepared, and in the input laser sintering and moulding machine, the laser scanning level of the automatic identification three-D profile correspondence in the make-up machine and the laser beam scan path of each level;
(3) according to model initialization moulding machine parameter;
(4) make-up machine carries out laser scanning, the dusty material of laser beam on the laser beam scan path scanning workbench of this level, and after one deck dusty material sintering was finished, make-up machine workbench decline one deck repaved new one deck dusty material and carries out sintering;
(5) repeating step (4) is finished until last one deck dusty material sintering.
Make-up machine parameter in the described step (3) comprises sweep speed, laser power, scanning density, scanning floor height and scan mode.
The dusty material that is used for the selective laser sintering and moulding method in the described step (1) comprises the mixture that nylon polymer powder, PC polymer powder and siliceous salt powder are made, and the volume ratio of described nylon polymer, PC polymer and siliceous salt is (1～2): 1:1.
The line of described dusty material for the selective laser sintering and moulding method directly is 10 μ m～100 μ m.
With respect to prior art, the present invention can carry out sintering at normal temperatures, need not many hours preceding preheating and back temperature-fall period, shortened production cycle and the running cost of model product, and the physical characteristic of model product is good, and the degree of buckling deformation is little.
The present invention is further detailed explanation below in conjunction with the specific embodiment.
The specific embodiment
Embodiment 1:
A kind of selective laser sintering and moulding method may further comprise the steps:
(1) prepares dusty material for the selective laser sintering and moulding method;
The dusty material that is used for the selective laser sintering and moulding method comprises the mixture that nylon polymer powder, PC polymer powder and siliceous salt powder are made, and the volume ratio of this nylon polymer, PC polymer and siliceous salt is 1:1:1.Certainly, in order to strengthen the hardness of model product, can increase low-melting-point metal powder such as aluminium, tin as required, or the modifier of low-melting-point metal powder, or Si Fe Cu class modifier.The line that is used for the dusty material of selective laser sintering and moulding method directly is 100 μ m.
(2) use the ProE mapping software to make up the threedimensional model of dragon shape, set length and be respectively 200mm, 60mm, 100mm.File is stored as the .stl form, and the control computer .stl file input laser sintering and moulding machine utilizes software " layering " algorithm, generates .leo file and a series of .plt file.Software " layering " algorithm is deconstructed into threedimensional model the file of the .plt form of one group of cross section polar plot..plt file will guide the laser beam scan path in each cross section.
(3) according to model initialization moulding machine parameter;
The make-up machine parameter comprises sweep speed, laser power, scanning density, scanning floor height, scan mode, and initiation parameter is sweep speed 2700mm/s, laser power 7.2w, scanning density 0.10mm, scanning floor height 0.2mm, 90 ° of scan modes, size 1:1.
(4) make-up machine carries out laser scanning, the dusty material of laser beam on the laser beam scan path scanning workbench of this level, and after one deck dusty material sintering was finished, make-up machine workbench decline one deck repaved new one deck dusty material and carries out sintering;
Adopt the radio-frequency pulse CO of good stability
2Laser instrument uses wavelength to be the CO of 10.6nm
2The pulse superlaser makes the high energy pulse laser beam from the top vertical incidence and focuses on the shaping work platform by the light path guidance system.Information control laser according to the .plt file scans at dusty material continuously, and the laser mobile accuracy can reach 0.1mm ± 0.05mm, can make bed thickness less than 0.1mm like this, and the easier clinkering of material together between bisque.The peak value of laser pulse can make high molecular polymer abundant fusion of moment; When the narrow pulse waveform of laser can make dusty material in the laser rapid cooled and solidified in back in the past again.Moulding section also is subjected to the support of powder material on every side, need not extra additional support part.
(5) repeating step (4) is finished until last one deck dusty material sintering.
At last the shaping work platform is risen to initial position and reset, sweep off dusty material on every side, take off the forming model of dragon shape, remove residual powder material with compressed air, with mill and sand paper finished surface, a forming model is namely finished.
Embodiment 2:
(1) prepares dusty material for the selective laser sintering and moulding method;
The dusty material that is used for the selective laser sintering and moulding method comprises the mixture that nylon polymer powder, PC polymer powder and siliceous salt powder are made, and the mass ratio of this nylon polymer, PC polymer and siliceous salt is 1:1:1.Certainly, in order to strengthen the hardness of model product, can increase low-melting-point metal powder such as aluminium, tin as required, or the modifier of low-melting-point metal powder, or Si Fe Cu class modifier.The line that is used for the dusty material of selective laser sintering and moulding method directly is 100 μ m.
(2) use the ProE mapping software to make up and have complex internal structure, the threedimensional model aspect rotation and that can show type " PHD " on the surface, set length and be respectively 90mm, 40mm, 105mm.File is stored as the .stl form, and the control computer .stl file input laser sintering and moulding machine utilizes software " layering " algorithm, generates .leo file and a series of .plt file.Software " layering " algorithm is deconstructed into threedimensional model the file of the .plt form of one group of cross section polar plot..plt file will guide the laser beam scan path in each cross section.
(3) according to model initialization moulding machine parameter;
The make-up machine parameter comprises sweep speed, laser power, scanning density, scanning floor height, scan mode, and initiation parameter is sweep speed 2850m/s, laser power 8.0w, scanning density 0.10mm, scanning floor height 0.15mm, 180 ° of scan modes, size 1:1.
(4) make-up machine carries out laser scanning, the dusty material of laser beam on the laser beam scan path scanning workbench of this level, and after one deck dusty material sintering was finished, make-up machine workbench decline one deck repaved new one deck dusty material and carries out sintering;
Adopt the radio-frequency pulse CO of good stability
2Laser instrument uses wavelength to be the CO of 10.6nm
2The pulse superlaser makes the high energy pulse laser beam from the top vertical incidence and focuses on the shaping work platform by the light path guidance system.Information control laser according to the .plt file scans at dusty material continuously, and the laser mobile accuracy can reach 0.1mm ± 0.05mm, can make bed thickness less than 0.1mm like this, and the easier clinkering of material together between bisque.The peak value of laser pulse can make high molecular polymer abundant fusion of moment; When the narrow pulse waveform of laser can make dusty material in the laser rapid cooled and solidified in back in the past again.Moulding section also is subjected to the support of powder material on every side, need not extra additional support part.
(5) repeating step (4) is finished until last one deck dusty material sintering.
At last the shaping work platform is risen to initial position and reset, the dusty material around sweeping off takes off forming model, removes residual powder material with compressed air, and with mill and sand paper finished surface, a forming model is namely finished.
Embodiment 3:
(1) prepares dusty material for the selective laser sintering and moulding method;
The dusty material that is used for the selective laser sintering and moulding method comprises the mixture that nylon polymer powder, PC polymer powder and siliceous salt powder are made, and the mass ratio of this nylon polymer, PC polymer and siliceous salt is 1.5:1:1.Certainly, in order to strengthen the hardness of model product, can increase low-melting-point metal powder such as aluminium, tin as required, or the modifier of low-melting-point metal powder, or Si Fe Cu class modifier.The line that is used for the dusty material of selective laser sintering and moulding method directly is 80 μ m.
(2) use the ProE mapping software to make up the high-heeled shoes threedimensional model with careful decorative pattern and sole hollow structure, set length and be respectively 130mm, 40mm, 100mm.File is stored as the .stl form, and the control computer .stl file input laser sintering and moulding machine utilizes software " layering " algorithm, generates .leo file and a series of .plt file.Software " layering " algorithm is deconstructed into threedimensional model the file of the .plt form of one group of cross section polar plot..plt file will guide the laser beam scan path in each cross section.
(3) according to model initialization moulding machine parameter;
The make-up machine parameter comprises sweep speed, laser power, scanning density, scanning floor height, scan mode, and initiation parameter is sweep speed 3000mm/s, laser power 8.0w, scanning density 0.10mm, scanning floor height 0.10mm, 90 ° of scan modes, size: 1:1.5.
(4) make-up machine carries out laser scanning, the dusty material of laser beam on the laser beam scan path scanning workbench of this level, and after one deck dusty material sintering was finished, make-up machine workbench decline one deck repaved new one deck dusty material and carries out sintering;
Adopt the radio-frequency pulse CO of good stability
2Laser instrument uses wavelength to be the CO of 10.6nm
2The pulse superlaser makes the high energy pulse laser beam from the top vertical incidence and focuses on the shaping work platform by the light path guidance system.Information control laser according to the .plt file scans at dusty material continuously, and the laser mobile accuracy can reach 0.1mm ± 0.05mm, can make bed thickness less than 0.1mm like this, and the easier clinkering of material together between bisque.The peak value of laser pulse can make high molecular polymer abundant fusion of moment; When the narrow pulse waveform of laser can make dusty material in the laser rapid cooled and solidified in back in the past again.Moulding section also is subjected to the support of powder material on every side, need not extra additional support part.
(5) repeating step (4) is finished until last one deck dusty material sintering.
At last the shaping work platform is risen to initial position and reset, the dusty material around sweeping off takes off forming model, removes residual powder material with compressed air, and with mill and sand paper finished surface, a forming model is namely finished.
The present invention is not limited to above-mentioned embodiment, if various changes of the present invention or distortion are not broken away from the spirit and scope of the present invention, if these changes and distortion belong within claim of the present invention and the equivalent technologies scope, then the present invention also is intended to comprise these changes and distortion.
Claims (4)
1. selective laser sintering and moulding method, it is characterized in that: described selective laser sintering and moulding method may further comprise the steps:
(1) prepares dusty material for the selective laser sintering and moulding method;
(2) use three-dimensional graphics software to draw the three-D profile of model to be prepared, and in the input laser sintering and moulding machine, the laser scanning level of the automatic identification three-D profile correspondence in the make-up machine and the laser beam scan path of each level;
(3) according to model initialization moulding machine parameter;
(4) make-up machine carries out laser scanning, the dusty material of laser beam on the laser beam scan path scanning workbench of this level, and after one deck dusty material sintering was finished, make-up machine workbench decline one deck repaved new one deck dusty material and carries out sintering;
(5) repeating step (4) is finished until last one deck dusty material sintering.
2. selective laser sintering and moulding method according to claim 1, it is characterized in that: the make-up machine parameter in the described step (3) comprises sweep speed, laser power, scanning density, scanning floor height and scan mode.
3. selective laser sintering and moulding method according to claim 1, it is characterized in that: the dusty material that is used for the selective laser sintering and moulding method in the described step (1) comprises the mixture that nylon polymer powder, PC polymer powder and siliceous salt powder are made, and the volume ratio of described nylon polymer, PC polymer and siliceous salt is (1～2): 1:1.
4. selective laser sintering and moulding method according to claim 3 is characterized in that: the line of described dusty material for the selective laser sintering and moulding method directly is 10 μ m～100 μ m.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103358017A (en) * | 2013-07-15 | 2013-10-23 | 中国科学院西安光学精密机械研究所 | High-precision three-dimensional rapid manufacturing composite laser processing method and processing system |
| CN103722171A (en) * | 2013-12-25 | 2014-04-16 | 合肥工业大学 | Honeycombed laser scanning method for selective laser sintering |
| CN103752823A (en) * | 2013-12-25 | 2014-04-30 | 合肥工业大学 | Triangular mesh type laser scanning method for selective laser sintering |
| CN103753968A (en) * | 2014-01-07 | 2014-04-30 | 清华大学 | Powder paving device for three-dimensional printing system and three-dimensional printing system |
| CN104353833A (en) * | 2014-11-07 | 2015-02-18 | 中国石油大学(华东) | 3D (3-dimnesional) printing manufacturing method for PDC (primary domain controller) drill bit body |
| CN105014070A (en) * | 2014-04-25 | 2015-11-04 | 中国科学院福建物质结构研究所 | Selective laser sintering 3D printing method |
| CN105290400A (en) * | 2015-10-29 | 2016-02-03 | 江苏恒尚动力高科有限公司 | Rapid manufacturing method for turbocharger impeller |
| CN105657210A (en) * | 2016-02-02 | 2016-06-08 | 上海玮舟微电子科技有限公司 | 3D printing display method, system and electronic device |
| CN105817724A (en) * | 2015-01-08 | 2016-08-03 | 东北林业大学 | Preparation method for electrochemical-machining complicated electrode based on wood-plastic composite material |
| CN106636841A (en) * | 2016-10-13 | 2017-05-10 | 聊城大学 | Metal microporous material and preparation method thereof |
| CN107399080A (en) * | 2017-08-24 | 2017-11-28 | 安徽恒利增材制造科技有限公司 | A kind of selective laser sintering rapid forming technology |
| CN109332691A (en) * | 2018-10-31 | 2019-02-15 | 有研工程技术研究院有限公司 | A kind of laser sintered parameter determination method of copper nanoparticle 3D printing |
| CN113045828A (en) * | 2019-12-26 | 2021-06-29 | 财团法人工业技术研究院 | Selective laser sintering composition and three-dimensional printing method using same |
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| GB2395927A (en) * | 2002-12-02 | 2004-06-09 | Ono & Co Ltd | Producing artificial bones by laser sintering |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103358017A (en) * | 2013-07-15 | 2013-10-23 | 中国科学院西安光学精密机械研究所 | High-precision three-dimensional rapid manufacturing composite laser processing method and processing system |
| CN103722171B (en) * | 2013-12-25 | 2016-06-01 | 合肥工业大学 | A kind of honeycomb fashion laser scanning method for selective laser sintering |
| CN103722171A (en) * | 2013-12-25 | 2014-04-16 | 合肥工业大学 | Honeycombed laser scanning method for selective laser sintering |
| CN103752823A (en) * | 2013-12-25 | 2014-04-30 | 合肥工业大学 | Triangular mesh type laser scanning method for selective laser sintering |
| CN103753968A (en) * | 2014-01-07 | 2014-04-30 | 清华大学 | Powder paving device for three-dimensional printing system and three-dimensional printing system |
| CN103753968B (en) * | 2014-01-07 | 2015-10-28 | 清华大学 | For powder paving device and the 3 D-printing system of 3 D-printing system |
| CN105014070A (en) * | 2014-04-25 | 2015-11-04 | 中国科学院福建物质结构研究所 | Selective laser sintering 3D printing method |
| CN104353833A (en) * | 2014-11-07 | 2015-02-18 | 中国石油大学(华东) | 3D (3-dimnesional) printing manufacturing method for PDC (primary domain controller) drill bit body |
| CN105817724A (en) * | 2015-01-08 | 2016-08-03 | 东北林业大学 | Preparation method for electrochemical-machining complicated electrode based on wood-plastic composite material |
| CN105817724B (en) * | 2015-01-08 | 2019-01-18 | 东北林业大学 | A kind of preparation method of the Electrolyzed Processing complicated electrode based on wood plastic composite |
| CN105290400A (en) * | 2015-10-29 | 2016-02-03 | 江苏恒尚动力高科有限公司 | Rapid manufacturing method for turbocharger impeller |
| CN105657210A (en) * | 2016-02-02 | 2016-06-08 | 上海玮舟微电子科技有限公司 | 3D printing display method, system and electronic device |
| CN105657210B (en) * | 2016-02-02 | 2019-10-18 | 上海玮舟微电子科技有限公司 | 3D printing display methods, system and electronic equipment |
| CN106636841A (en) * | 2016-10-13 | 2017-05-10 | 聊城大学 | Metal microporous material and preparation method thereof |
| CN106636841B (en) * | 2016-10-13 | 2018-01-05 | 聊城大学 | A kind of metal microporous material and preparation method thereof |
| CN107399080A (en) * | 2017-08-24 | 2017-11-28 | 安徽恒利增材制造科技有限公司 | A kind of selective laser sintering rapid forming technology |
| CN109332691A (en) * | 2018-10-31 | 2019-02-15 | 有研工程技术研究院有限公司 | A kind of laser sintered parameter determination method of copper nanoparticle 3D printing |
| CN113045828A (en) * | 2019-12-26 | 2021-06-29 | 财团法人工业技术研究院 | Selective laser sintering composition and three-dimensional printing method using same |
| CN113045828B (en) * | 2019-12-26 | 2024-01-26 | 财团法人工业技术研究院 | Selective laser sintering composition and three-dimensional printing method using the same |
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Application publication date: 20130710 |