WO2011145960A1 - Method and device for smoothing elements made using the sls incremental technology - Google Patents

Method and device for smoothing elements made using the sls incremental technology Download PDF

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Publication number
WO2011145960A1
WO2011145960A1 PCT/PL2011/000050 PL2011000050W WO2011145960A1 WO 2011145960 A1 WO2011145960 A1 WO 2011145960A1 PL 2011000050 W PL2011000050 W PL 2011000050W WO 2011145960 A1 WO2011145960 A1 WO 2011145960A1
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Prior art keywords
chemical compound
sls
smoothing
elements made
technology
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PCT/PL2011/000050
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French (fr)
Inventor
Piotr Jankowski
Grzegorz Sworobowicz
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Mbm Technology Spolka Cywilna
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Mbm Technology Spolka Cywilna
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Publication of WO2011145960A1 publication Critical patent/WO2011145960A1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
    • B29C71/009—After-treatment of articles without altering their shape; Apparatus therefor using gases without chemical reaction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C71/00—After-treatment of articles without altering their shape; Apparatus therefor
    • B29C71/0009—After-treatment of articles without altering their shape; Apparatus therefor using liquids, e.g. solvents, swelling agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
    • B33Y40/20—Post-treatment, e.g. curing, coating or polishing

Definitions

  • the subject of the invention is a method and device for smoothing elements made using the SLS incremental technology (Selective Laser Sintering) of materials based on polyamide powder - PA.
  • SLS Selective Laser Sintering
  • PA polyamide powder
  • FDM Fused Deposition Modelling
  • an incremental technology consisting in laminar depositing of liquid thermoplastic plastic using a printing head on the pattern plate of the production device.
  • the material is applied in layers the thickness of which is about 0,1mm to about 0,33mm.
  • the surface is porous (SLS), or linearly constructed of material layers (FDM).
  • SLS porous
  • FDM linearly constructed of material layers
  • the laminar surface structure causes anisotropy of the constructed model.
  • the method of surface smoothing consists in that the method of smoothing prototype elements made using the SLS (Selective Laser Sintering) technology of materials based on polyamide powder - PA, wherein the element is subject to the effects of vapour of a chemical compound from the following group: formic acid, acetic acid, m-creozol, acetic anhydride, so that the applied chemical compound, in atmospheric pressure, is brought to a temperature above its specific boiling point for a time of 1-350 seconds, from the moment when vapours of the chemical compound condensate on the processed prototypical element.
  • SLS Selective Laser Sintering
  • the device for smoothing prototypical elements made using incremental technology SLS (Selective Laser Sintering) of materials based- on polyamide powder - PA characterized in that the device 4 consists of chamber 3 with working space, below which is: container of the active substance dispenser and heating element 6, separated from the working space with the movable screen 7, and vapour extraction system 8 with ventilation duct.
  • SLS Selective Laser Sintering
  • fig.1 depicts the diagram of the smoothing device
  • fig. 2 presents a chart of the obtained roughness parameter depending on the exposure time for control vertical tiles and control horizontal tiles.
  • Control tiles in the size of 50mmx50rnmx5mm were made of PA2200 material based on polyamide powder (PA), using the SLS (Selective Laser Sintering) technology.
  • PA polyamide powder
  • the tiles were made in two possible positions on the pattern plate of the SLS device, i.e. vertically (tiles marked as V) and horizontally (tiles marked as H). Position of the tile during forming of the same is of vital importance for the obtained surface condition of the raw model, especially its roughness.
  • control tiles were subject to the process of smoothing and surface improvement, as per description above.
  • Exposure time 30 to 120 seconds
  • V2 - vertical plate exposure time 60 seconds
  • V3 - vertical plate exposure time 90 seconds
  • V4 - vertical plate exposure time 120 seconds

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Plasma & Fusion (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)

Abstract

Method and device for smoothing elements made using the SLS incremental technology (Selective Laser Sintering) of materials based on polyamide powder - PA. The method consists in that the element is subject to effects of vapours of a chemical compound from the following group: formic acid, acetic acid, m-creozol, acetic anhydride, so that the applied chemical compound, in atmospheric pressure, is brought to a temperature above its specific boiling point for a time of 1-350 seconds, counting from the moment when vapours of the chemical compound condensate on the processed prototypical element. The device has a chamber (3) with working space, below which there is a container of the active substance dispenser and heating element (6), separated from the working space with the movable screen (7), and vapour extraction system (8) with ventilation duct.

Description

Method and device for smoothing elements made using the SLS incremental technology
The subject of the invention is a method and device for smoothing elements made using the SLS incremental technology (Selective Laser Sintering) of materials based on polyamide powder - PA.
Among numerous rapid prototyping technologies, some of the most commonly used are the incremental technologies SLS (Selective Laser Sintering); it is an incremental technology consisting in using laser beam to bond polyamide powder (PA), applied in layers on the model plate of the production machine. The depth of each applied layer of the polyamide powder is about 0,lmm-0,15mm.
Another widely used technology is FDM (Fused Deposition Modelling), an incremental technology consisting in laminar depositing of liquid thermoplastic plastic using a printing head on the pattern plate of the production device. The material is applied in layers the thickness of which is about 0,1mm to about 0,33mm.
Both these technologies are used to make a physical model directly from a digital solid 3D model.
Details made using these technologies have a characteristic surface texture. Depending on the technology applied, the surface is porous (SLS), or linearly constructed of material layers (FDM). In the case of the FDM technology, the laminar surface structure causes anisotropy of the constructed model.
Improving the surface of details made using incremental technologies grants numerous advantages. First of all, it enhances functionality of the model (particularly in the case of mated subassemblies), improves the visual effects, as well as decreases anisotropic properties of the detail, thus expanding its strength. Smoothing of the surface increases the resistance by homogenizing the surface layer.
Currently known and applied methods for improving the surface condition:
• Abrasive machining - mechanical.
• Abrasive machining - manual. • Surface abrasive machining by sand blasting.
• Infiltration (percolating the surface layer of the detail with another substance - usually resin - in order to smoothen it).
• Lacquering.
Another known method for surface smoothing, applied only in the case of details made using the FDM technology, is smoothing surface of models made of ABS plastic ((poli(acrylonitrile-co-butadiene-co-styrene))), consisting in effects of vapour of an appropriate chemical compound. This technology applies only to models made using the FDM (Fused Deposition Modeling) technology, of ABS material ((poli(acrylonitrile-co- butadiene-co-styrene))).
According to the invention, the method of surface smoothing consists in that the method of smoothing prototype elements made using the SLS (Selective Laser Sintering) technology of materials based on polyamide powder - PA, wherein the element is subject to the effects of vapour of a chemical compound from the following group: formic acid, acetic acid, m-creozol, acetic anhydride, so that the applied chemical compound, in atmospheric pressure, is brought to a temperature above its specific boiling point for a time of 1-350 seconds, from the moment when vapours of the chemical compound condensate on the processed prototypical element.
According to the invention, the device for smoothing prototypical elements made using incremental technology SLS (Selective Laser Sintering) of materials based- on polyamide powder - PA characterized in that the device 4 consists of chamber 3 with working space, below which is: container of the active substance dispenser and heating element 6, separated from the working space with the movable screen 7, and vapour extraction system 8 with ventilation duct.
The subject of the invention is presented in the drawing, in which fig.1 depicts the diagram of the smoothing device, and fig. 2 presents a chart of the obtained roughness parameter depending on the exposure time for control vertical tiles and control horizontal tiles. Design examples
Control tiles, in the size of 50mmx50rnmx5mm were made of PA2200 material based on polyamide powder (PA), using the SLS (Selective Laser Sintering) technology.
The tiles were made in two possible positions on the pattern plate of the SLS device, i.e. vertically (tiles marked as V) and horizontally (tiles marked as H). Position of the tile during forming of the same is of vital importance for the obtained surface condition of the raw model, especially its roughness.
The control tiles were subject to the process of smoothing and surface improvement, as per description above.
The smoothing process was carried out in the following conditions:
Applied active chemical compound: formic acid, Chemical formula: HCOOH,
Concentration: 85%
Boiling point: 100,7°C
Temperature of the vapour generator heating element: 300°C
Exposure time: 30 to 120 seconds
The samples were marked with the following symbols:
V0 - vertical plate without the process of surface smoothing and improvement, VI - vertical plate, exposure time 30 seconds,
V2 - vertical plate, exposure time 60 seconds,
V3 - vertical plate, exposure time 90 seconds,
V4 - vertical plate, exposure time 120 seconds,
HO - horizontal plate without the process of surface smoothing and improvement, HI - horizontal plate, exposure time 30 seconds,
H2 - horizontal plate, exposure time 60 seconds,
H3 - horizontal plate, exposure time 90 seconds,
H4 - horizontal plate, exposure time 120 seconds,
After completing the process, the plates were subject to roughness tests. Measurement results are presented in the table and charts below.
Figure imgf000005_0001

Claims

Claims
1. The method of smoothing prototype elements made using the SLS (Selective Laser Sintering) technology of materials based on polyamide powder - PA, wherein the element is subject to the effects of vapour of a chemical compound from the following group: formic acid, acetic acid, m-creozol, acetic anhydride, so that the applied chemical compound, in atmospheric pressure, is brought to a temperature above its specific boiling point for a time of 1-350 seconds, counting from the moment when vapours of the chemical compound condensate on the processed prototypical element.
2. The device for smoothing prototypical elements made using incremental technology SLS (Selective Laser Sintering) of materials based on polyamide powder - PA characterized in that the device (4) has a chamber (3) with working space, below which is: container of the active substance dispenser and heating element (6), separated from the working space with the movable screen (7), and vapour extraction system (8) with ventilation duct.
PCT/PL2011/000050 2010-05-21 2011-05-11 Method and device for smoothing elements made using the sls incremental technology Ceased WO2011145960A1 (en)

Applications Claiming Priority (2)

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PL391288A PL219312B1 (en) 2010-05-21 2010-05-21 Method and apparatus for smoothing elements produced using SLS incremental technology
PLP.391288 2010-05-21

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WO2011145960A1 true WO2011145960A1 (en) 2011-11-24

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Cited By (15)

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Publication number Priority date Publication date Assignee Title
CN103524770A (en) * 2013-08-28 2014-01-22 中国科学院福建物质结构研究所 3D (Three Dimensional) printing product surface polishing method and device thereof
CN105367812A (en) * 2015-12-11 2016-03-02 四川长虹电器股份有限公司 Method for enhancing strength of 3D printed products
EP3305510A1 (en) 2016-10-10 2018-04-11 Acondicionamiento Tarrasense Method for polishing polyamide objects obtained by additive manufacturing or 3d printing techniques
FR3072603A1 (en) * 2017-10-24 2019-04-26 Sculpteo SURFACE TREATMENT METHOD FOR OBJECTS
WO2019138180A1 (en) * 2018-01-15 2019-07-18 Chanel Parfums Beaute Method for manufacturing a cosmetic product applicator by additive manufacturing
WO2019138183A1 (en) * 2018-01-15 2019-07-18 Chanel Parfums Beaute Method for post-processing a part obtained by additive manufacturing from a plastic material powder
WO2019179755A1 (en) 2018-03-22 2019-09-26 Luxyours E.K. Process and apparatus for chemical smoothing of plastic parts
WO2019185756A1 (en) * 2018-03-27 2019-10-03 Technische Universität München Method for treatment of elements obtained by an additive manufacturing process
EP3587080A1 (en) * 2018-06-30 2020-01-01 Technische Universität München Method for treatment of elements obtained by an additive manufacturing process
CN111971160A (en) * 2018-03-29 2020-11-20 罗斯托克大学 Device for producing a 3D-printed active substance release system comprising an active substance magazine and method for producing a 3D-printed active substance release system
DE102020129296A1 (en) 2020-11-06 2022-05-12 Dyemansion Gmbh Support frame for components in a process chamber
EP3565712B1 (en) 2017-01-09 2023-09-06 Additive Manufacturing Technologies Limited Improvements to additive manufacturing
CN116940459A (en) * 2021-01-21 2023-10-24 3D内特希有限责任公司 Surface finishing apparatus for polyamide polymer articles obtained by additive manufacturing and related surface finishing method
WO2024160807A1 (en) * 2023-01-30 2024-08-08 Dyemansion Gmbh Method for treating the surface of a shaped part manufactured in an additive method
US12233597B2 (en) 2020-04-23 2025-02-25 Hewlett-Packard Development Company, L.P. Three-dimensional printing

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CN103524770A (en) * 2013-08-28 2014-01-22 中国科学院福建物质结构研究所 3D (Three Dimensional) printing product surface polishing method and device thereof
CN105367812A (en) * 2015-12-11 2016-03-02 四川长虹电器股份有限公司 Method for enhancing strength of 3D printed products
CN105367812B (en) * 2015-12-11 2018-09-18 四川长虹电器股份有限公司 A method of increasing 3D printing product strength
EP3305510A1 (en) 2016-10-10 2018-04-11 Acondicionamiento Tarrasense Method for polishing polyamide objects obtained by additive manufacturing or 3d printing techniques
WO2018069250A1 (en) 2016-10-10 2018-04-19 Acondicionamiento Tarrasense Method for polishing polyamide objects obtained by additive manufacturing or 3d printing techniques
US11458697B2 (en) 2016-10-10 2022-10-04 Acondicionamiento Tarrasense Method for polishing polyamide objects obtained by additive manufacturing or 3D printing techniques
US12162220B2 (en) 2017-01-09 2024-12-10 Additive Manufacturing Technologies Limited Method of smoothing a surface of an additively manufactured part
EP3565712B1 (en) 2017-01-09 2023-09-06 Additive Manufacturing Technologies Limited Improvements to additive manufacturing
US10899078B2 (en) 2017-10-24 2021-01-26 Sculpteo Surface treatment method for objects
FR3072603A1 (en) * 2017-10-24 2019-04-26 Sculpteo SURFACE TREATMENT METHOD FOR OBJECTS
EP3476581A1 (en) * 2017-10-24 2019-05-01 Sculpteo Surface treatment method for objects
JP7250802B2 (en) 2018-01-15 2023-04-03 シャネル パルファン ボーテ Method for post-processing parts obtained by additive manufacturing from plastics material powder
WO2019138183A1 (en) * 2018-01-15 2019-07-18 Chanel Parfums Beaute Method for post-processing a part obtained by additive manufacturing from a plastic material powder
WO2019138180A1 (en) * 2018-01-15 2019-07-18 Chanel Parfums Beaute Method for manufacturing a cosmetic product applicator by additive manufacturing
US11945165B2 (en) 2018-01-15 2024-04-02 Chanel Parfums Beaute Method including additive manufacturing a part and post-processing with two ionizing bars and a rotary barrel
FR3076759A1 (en) * 2018-01-15 2019-07-19 Chanel Parfums Beaute PROCESS FOR PRODUCING A COSMETIC PRODUCT APPLICATOR BY ADDITIVE MANUFACTURE
CN111801217A (en) * 2018-01-15 2020-10-20 香奈儿化妆品简单股份公司 Method of manufacturing a cosmetic applicator by additive manufacturing
CN111819063A (en) * 2018-01-15 2020-10-23 香奈儿化妆品简单股份公司 Method for post-processing of components obtained by additive manufacturing of plastic material powders
FR3076760A1 (en) * 2018-01-15 2019-07-19 Chanel Parfums Beaute PROCESS FOR POST-PROCESSING A PIECE OBTAINED BY ADDITIVE MANUFACTURING FROM A POWDER OF A PLASTIC MATERIAL
US20200406549A1 (en) * 2018-01-15 2020-12-31 Chanel Parfums Beaute Method for post-processing a part obtained by additive manufacturing from a plastic material powder
CN111801217B (en) * 2018-01-15 2022-07-01 香奈儿化妆品简单股份公司 Method for manufacturing a cosmetic applicator by additive manufacturing
JP2021510645A (en) * 2018-01-15 2021-04-30 シャネル パルファン ボーテＣｈａｎｅｌ Ｐａｒｆｕｍｓ Ｂｅａｕｔｅ A method of post-processing parts obtained by laminating molding from plastic material powder
US11267198B2 (en) 2018-01-15 2022-03-08 Chanel Parfums Beaute Method for manufacturing a cosmetic product applicator by additive manufacturing
US11654642B2 (en) 2018-03-22 2023-05-23 Luxyours E.K Process and apparatus for chemical smoothing of plastic parts
WO2019179755A1 (en) 2018-03-22 2019-09-26 Luxyours E.K. Process and apparatus for chemical smoothing of plastic parts
DE102018002401A1 (en) 2018-03-22 2019-09-26 Luxyours E.K. Method and device for chemical smoothing of plastic parts
DE102018002401B4 (en) * 2018-03-22 2020-03-12 Luxyours E.K. Method and device for chemical smoothing of plastic parts
DE102018002401C5 (en) 2018-03-22 2023-04-27 Luxyours Gmbh Process and device for the chemical smoothing of plastic parts
WO2019185756A1 (en) * 2018-03-27 2019-10-03 Technische Universität München Method for treatment of elements obtained by an additive manufacturing process
CN111971160A (en) * 2018-03-29 2020-11-20 罗斯托克大学 Device for producing a 3D-printed active substance release system comprising an active substance magazine and method for producing a 3D-printed active substance release system
CN111971160B (en) * 2018-03-29 2022-07-26 罗斯托克大学 Device for producing an active substance delivery system comprising an active substance magazine and method for producing an active substance delivery system
EP3587080A1 (en) * 2018-06-30 2020-01-01 Technische Universität München Method for treatment of elements obtained by an additive manufacturing process
US12233597B2 (en) 2020-04-23 2025-02-25 Hewlett-Packard Development Company, L.P. Three-dimensional printing
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CN116940459A (en) * 2021-01-21 2023-10-24 3D内特希有限责任公司 Surface finishing apparatus for polyamide polymer articles obtained by additive manufacturing and related surface finishing method
WO2024160807A1 (en) * 2023-01-30 2024-08-08 Dyemansion Gmbh Method for treating the surface of a shaped part manufactured in an additive method

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