EP3487651A1 - Method for generating a component by a powder-bed-based additive manufacturing method and powder for use in such a method - Google Patents
Method for generating a component by a powder-bed-based additive manufacturing method and powder for use in such a methodInfo
- Publication number
- EP3487651A1 EP3487651A1 EP17768686.2A EP17768686A EP3487651A1 EP 3487651 A1 EP3487651 A1 EP 3487651A1 EP 17768686 A EP17768686 A EP 17768686A EP 3487651 A1 EP3487651 A1 EP 3487651A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- powder
- particles
- alloy
- component
- shell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/009—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of turbine components other than turbine blades
-
- 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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/17—Metallic particles coated with metal
-
- 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
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
- B22F10/28—Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y70/00—Materials specially adapted for additive manufacturing
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/0433—Nickel- or cobalt-based alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C27/00—Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00
- C22C27/04—Alloys based on tungsten or molybdenum
-
- 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
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/10—Auxiliary heating means
- B22F12/13—Auxiliary heating means to preheat the material
-
- 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
- B22F12/00—Apparatus or devices specially adapted for additive manufacturing; Auxiliary means for additive manufacturing; Combinations of additive manufacturing apparatus or devices with other processing apparatus or devices
- B22F12/40—Radiation means
- B22F12/44—Radiation means characterised by the configuration of the radiation means
-
- 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
Definitions
- the invention relates to a method for producing a component, in particular from a superalloy, with a powder-based additive manufacturing method.
- the component is layer by layer in a powder bed by melting the powder bed forming particles with an energy beam such. B. an electron beam or a laser beam.
- the powder bed is preheated to a temperature below the melting temperature of the particles before and while the particles are melted.
- the invention relates to a powder suitable for use in a powder bed-based additive manufacturing process consisting of a metal alloy.
- a method of the type described above is known for example from EP 1 355 760 Bl.
- the method for selective laser melting (SLM), which is discussed in this document is intended to be capable of high-melting materials to verar ⁇ BEITEN. Since there is an interest in producing components from high-melting materials that are of low value
- the components are produced in layers in a powder bed. These processes are therefore also referred to as powder bed-based additive manufacturing processes.
- a position of the powder in the powder bed is generated by the energy source (laser or electron beam). beam) is then melted locally in those regions or sintered, in which the component is to entste ⁇ hen.
- the component is successively produced in layers and can be removed after completion of the powder bed.
- H-SLM Temperature-Selective Laser Melting
- Al powders which consist of a metal alloy.
- the particles of this powder have a core and a shell, wherein the core consists of a higher melting alloy content, as the shell.
- These particles should be in accordance with the above-mentioned document particularly well suited to produce components by sintering. The reason for this is stated in the fact that the particles melt faster than if they were made homogeneously from the desired alloy composition. Thus, lower sintering temperatures are possible in the sintering treatment . During the sintering treatment, the desired alloy composition finally sets in the sintered component.
- the object is achieved with the method specified at the outset by using a powder of a metal alloy, wherein particles of the powder consist of a core and a shell.
- a first metallic alloying portion is present and a second metallic alloying portion is present in the shell.
- the first and second metallic alloy portions may thus themselves consist of a metal or a metal alloy.
- the first Leg istsan ⁇ part has a lower melting temperature than the second alloy content.
- Metal alloy of the particle deviates.
- the alloy composition of a respective particle thus consists of al ⁇ len the particle-forming alloying elements in total.
- the Each alloy of the core (also called core) and the shell (also called shell) must therefore be chosen so that in total, taking into account the respective mass fraction of core and shell on the particle, the desired metal alloy of the powder is formed.
- To end ⁇ valid alloying a melting or sintering of the powder is then used terrea, which results in a diffusion of the alloy components and the formation of the desired metal alloy composition ⁇ (this hereinafter even more).
- possibly alloying elements evaporate during the manufacturing process and therefore must be present in a concentration equalizing the evaporation loss in the particles (ie in the core and / or in the shell).
- the higher-melting alloy content is used as the shell of the particles, even if this causes just the opposite of the purpose stated in this document, namely that the particle surfaces melt is reached only at higher temperatures.
- the inventive particles tend at a processing in powder bed additive manufacturing process based far less likely verbett in powder diffractometer (ie outside the construction volume of the produced ⁇ partly) to cake together.
- caking by sintering or at least sintering of the powder particles can therefore be avoided so that they are advantageously available for subsequent production processes.
- Advantageously au ⁇ ßerdem that is facilitated from internal voids through the lower tendency for sintering of the coated particles, the powder removal, what makes complex, delicate structures, as occur for example at the leading and trailing edges of gas turbine blades, to produce.
- Intra-sintering means not complete sintering, but the generation of a certain releasable adhesion effect between the particles.
- the layer on the particles have a thickness of 0.1 ym to 3 ym.
- This thickness of the shell is sufficient to shield the core of the particles sufficiently so that the effect of caking does not occur.
- the particles can advanta- size of at least 10 ym and ym Hoechsmann ⁇ least 50, preferably have an average particle size of 25 .mu.m to 30 .mu.m have.
- the dimensioning of the particle diameter, and thus also the core diameter and the thickness of the shell he ⁇ enables insofar adjustment of Leg istszusammenset ⁇ wetting of the total particles.
- a nickel base as a superalloy, a nickel base
- the powder is advantageously preheated in this material to ei ⁇ ne temperature of at least 800 ° C and at most 1000 ° C or even up to at most 1200 ° C.
- Preheating enters the powder bed, ensuring that the cooling is cooled after the manufacture of the component at a rate of at most 1 ° C per second.
- ⁇ ⁇ precipitates of intermetallic phases can form in the component from the nickel-base superalloy, which precipitates the typical structure of the nickel-based superalloy. characterize.
- the growth of cuboid ⁇ ⁇ precipitates is suppressed by too rapid cooling. If the component is cooled down at a slower rate than 1 ° C per second, however, the drops mentioned above are produced when the temperature falls below the y x -solidus temperature.
- the solidus temperature is 1150 ° C. To ensure a slow cooling from this temperature level, the temperature of the powder bed must be slightly lower. A temperature level between 900 ° C and at most 1000 ° C has proved to be advantageous.
- the object is achieved by the Pul ⁇ ver specified above, wherein in this powder particles consist of a core and a shell.
- a first metallic alloy component is present in the shell and a second me ⁇ on-metal alloy component with a different from the first alloy ⁇ share alloy composition.
- the first alloying fraction has a lower melting temperature than the second alloying fraction.
- the core of the particles contains mainly nickel (1455 ° C.) and the shell of the particles contains one or more of the following metals: cobalt (1495 ° C.), iron (1538 ° C.), chromium ( 1907 ° C), molybdenum (2623 ° C), tantalum (3020 ° C) or tungsten (3422 ° C).
- cobalt 1495 ° C.
- iron 1538 ° C.
- chromium 1907 ° C
- molybdenum 2623 ° C
- tantalum (3020 ° C) or tungsten (3422 ° C).
- the temperature data in parentheses indicate in each case the melting temperature of the metals.
- the core (as measured by the target alloy predetermined by the particles) contains disproportionately much nickel and the shell contains disproportionately much of an element with a higher melting point than nickel, eg Co, Cr, Mo, Wo, Ta.
- the alloys which can be produced with these metals are nickel-based alloys which are preferably used for high-temperature applications, such as, for example, high-temperature applications.
- B. turbine components, in particular turbine blades, are suitable. This recycled to pul ver ⁇ materials can advantageously be used in an ad ⁇ ditiven manufacturing method, wherein a heating of the powder bed is possible because the construction of the PUL- avoids sintering of the powder bed advantageous verp personality with the core and shell, or selectively influenced makes
- the particles may, for example, have the alloy composition of Mar M 247, CM 247 LC or Rene 80, wherein the shell preferably contains tungsten or, in the case of Rene 80, also chromium.
- the composition of these alloys can be found in Table 1. Table 1
- alloy compositions can also be made of a nickel-based single crystal alloy, such. CMSX-4.
- CMSX-4 a nickel-based single crystal alloy
- the shell of the particles of the single crystal alloys preferably contains tungsten and / or tantalum.
- the shell is more than 99% by mass, preferably completeness ⁇ dig from a single metallic alloy element be ⁇ .
- a complete existence of an alloying element encounters technical limitations, so that up to a mass% of other alloying constituents can be allowed.
- alloying element To produce alloying element, is that in the shell substantially no alloy compositions are present, which usually have a lower melting point than their elemental alloying constituents due to formation of eutectics. This can be advantageous to the
- At least one alloying element of the shell is also contained in the core, wherein the concentration of this alloying element is lower in the core, as in the shell.
- the casing is produced in a required thickness, so to speak überschüs ⁇ Siges material of the shell-forming alloy element is not subjected to a further increase of the thickness of the shell herange-, but is present as an alloying element in the core.
- the required diffusion process of the alloying element of the shell is shortened into the core, which advantageously supports the alloy formation during melting of the powder or reduces the required diffusion processes in the forming component.
- Section of the component being produced is shown in section, and
- FIG. 5 shows a detail of an embodiment of the component according to the invention, which has been prepared according to the figures 2 to 4.
- FIG. 1 schematically shows a system 11 for laser melting.
- This has a process chamber 12, in which a powder bed 13 can be produced.
- a distribution device in the form of a doctor blade 14 is moved over a powder supply 15 and then over the powder bed 13, whereby a thin layer of powder is formed in the powder bed 13.
- a laser 16 then generates a laser beam 17 which is moved by means of an optical deflection device with mirror 18 over the surface of the powder bed 13.
- the powder is melted at the point of impact of the laser beam 17, whereby a component 19 is formed.
- the powder bed 13 is formed on a building platform 20, which can be gradually lowered by an actuator 21 in a pot-shaped housing 22 by one powder layer thickness.
- heaters 23 in the form of electrical resistance heaters (al- ternatively also induction coils are possible) are provided, which can pre-heat the emerging component 19 and the Parti ⁇ angle of the powder bed 13. To the Energybe ⁇ may limit for preheating, is located on the housing 22 outside an insulation 24 of low thermal conductivity.
- FIG. 2 shows an edge of the component 19 to be produced, which, for example, in an installation according to FIG. gur 1 could be produced.
- This component is located in the powder bed 13, whose edges are indicated by a dot-dash line.
- 13 selected particles 25 are shown from the powder bed, which consist of the material of a nickel-based alloy.
- the manufactured component can, for. B. be a turbine blade.
- the particles 25 each consist of a core 26 and a shell 27.
- the core 26 mainly comprises nickel and other constituents of the nickel-based alloy.
- the sleeve 27 is be ⁇ for example, tungsten and otherwise from contami ⁇ nigenden alloying elements in technically irrelevant screen.
- the surface of the particles 25 has a melting ⁇ temperature of about 3400 ° C. This allows a preheating of the powder bed to up to 1000 ° C without adjacent particles 25 caked together.
- the particles 25 are shown schematically, wherein the size ratios between the core 26 and the shell 27 are not to scale. Also, a discrete transition between core 26 and shell 27, as shown in Figure 2, not necessarily neces ⁇ sary. Also conceivable are gradient layers in which a transition between core 26 and sheath 27 does not occur abruptly but with a concentration gradient (not shown). This advantageously promotes the diffusion processes which lead to alloying in the composition intended for the component as a result of melting of the particles. For the melting temperature at the surface of the particles 25, it is only necessary that the shell 27 has the composition required to reach the melting temperature present there.
- gradient layers can also be achieved in the preparation of the particles when ge ⁇ know diffusion processes of alloying elements in the core 26 and / or the shell 27 occur.
- manufacturing ⁇ procedures for the particles can, for example, galvanic or electroless electrochemical coating processes are used, as have already been described in DE 198 23 341 AI.
- ALD Atomic Layer Deposition
- atomic layers are applied to the particles, preferably very thin
- FIG. 3 shows how a part of the powder bed 13 is melted by means of the laser beam 17, namely that part which lies on the edge of the component 19.
- the cores 26 of the particles 25 melt.
- the sheaths 27 around the cores 26 have a higher melting point and remain initially in the molten bath, whereby resulting Frag ⁇ elements 28 of the envelope in the molten material verblei ⁇ ben and there dissolve (alloying with the desired alloy composition of the particles).
- This process can be very fast and is shown here only as a model.
- FIG. 4 shows how the laser 17 is moved over the powder bed 13, wherein the molten bath, as shown in FIG. 4, travels from left to right.
- one of the layer thickness d is formed of the powder bed corresponding position of the delivering forth ⁇ component 19th Migrates the laser ⁇ beam 17 on, the material solidified at the simultaneous formation of the component volume.
- the heating indicated in FIG. 1 causes the cooling rate of the material of the component 19 being produced to be less than 1 ° C. per second and the alloying formation is not disturbed by an excessive cooling rate.
- the finished component can be seen.
- the ⁇ ses is shown schematically as a grinding pattern.
- the Materi ⁇ al, from which the component 19 is made, is a nickel-based superalloy.
- ⁇ ⁇ precipitates 30 from intermetallic phases. These are embedded in a matrix 31 of the component. Since ⁇ with serschmelzens can achieve a component structure by the inventive selective laser, as has been previously generated, for example turbine blades according to the prior art only by casting. The microstructure thus differs from the structure of the processed particles.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016216859.2A DE102016216859A1 (en) | 2016-09-06 | 2016-09-06 | A method of producing a component having a powder bed based additive manufacturing method and powder for use in such a method |
PCT/EP2017/071725 WO2018046361A1 (en) | 2016-09-06 | 2017-08-30 | Method for generating a component by a powder-bed-based additive manufacturing method and powder for use in such a method |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3487651A1 true EP3487651A1 (en) | 2019-05-29 |
Family
ID=59901474
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17768686.2A Pending EP3487651A1 (en) | 2016-09-06 | 2017-08-30 | Method for generating a component by a powder-bed-based additive manufacturing method and powder for use in such a method |
Country Status (7)
Country | Link |
---|---|
US (1) | US11426797B2 (en) |
EP (1) | EP3487651A1 (en) |
CN (1) | CN109641271B (en) |
CA (1) | CA3035696C (en) |
DE (1) | DE102016216859A1 (en) |
SG (1) | SG11201901816QA (en) |
WO (1) | WO2018046361A1 (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3584804A1 (en) * | 2018-06-20 | 2019-12-25 | Siemens Healthcare GmbH | Method for producing a grid-like beam collimator, grid-like beam collimator, radiation detector and medical imaging device |
US11379637B2 (en) * | 2019-04-12 | 2022-07-05 | Iowa State University Research Foundation, Inc. | Interstitial control during additive manufacturing |
US11724340B2 (en) * | 2019-05-23 | 2023-08-15 | Saudi Arabian Oil Company | Additive manufacturing of MLD-enhanced drilling tools |
CN110480008B (en) * | 2019-09-03 | 2021-10-15 | 北京工业大学 | Three-dimensional communicated tungsten-based composite material prepared by laser 3D printing and preparation method thereof |
KR102321854B1 (en) * | 2020-12-17 | 2021-11-04 | (주)아이작리서치 | Metalic material for 3d printing high strength molding and 3d printing method using the same |
KR102321875B1 (en) * | 2020-12-17 | 2021-11-04 | (주)아이작리서치 | Metalic material for 3d printing and 3d printing method using the same |
US11572752B2 (en) | 2021-02-24 | 2023-02-07 | Saudi Arabian Oil Company | Downhole cable deployment |
US11727555B2 (en) | 2021-02-25 | 2023-08-15 | Saudi Arabian Oil Company | Rig power system efficiency optimization through image processing |
US11846151B2 (en) | 2021-03-09 | 2023-12-19 | Saudi Arabian Oil Company | Repairing a cased wellbore |
US11624265B1 (en) | 2021-11-12 | 2023-04-11 | Saudi Arabian Oil Company | Cutting pipes in wellbores using downhole autonomous jet cutting tools |
US11867012B2 (en) | 2021-12-06 | 2024-01-09 | Saudi Arabian Oil Company | Gauge cutter and sampler apparatus |
EP4257270A1 (en) * | 2022-04-05 | 2023-10-11 | Linde GmbH | Method and system for generating a three-dimensional workpiece |
Family Cites Families (18)
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DE9018138U1 (en) | 1989-09-05 | 1996-02-08 | Univ Texas | Selective radiation sintering device |
DE19823341A1 (en) | 1998-05-26 | 1999-12-02 | Wolfgang Semrau | Coated metal powder and process for its manufacture |
DE10104732C1 (en) | 2001-02-02 | 2002-06-27 | Fraunhofer Ges Forschung | Device for selective laser melting of metallic materials comprises a heating plate arranged on a platform with side walls, and an insulating layer thermally insulated from the platform |
GB2475064B (en) | 2009-11-04 | 2011-12-14 | Rolls Royce Plc | A method of producing an oxide coated nickel-base superalloy and a method of producing an oxide dispersion strengthened nickel-base superalloy |
DE102010046468B4 (en) * | 2010-09-24 | 2016-04-07 | MTU Aero Engines AG | Generative manufacturing process and powder for this purpose |
US20150336219A1 (en) | 2011-01-13 | 2015-11-26 | Siemens Energy, Inc. | Composite materials and methods for laser manufacturing and repair of metals |
CN102672365B (en) * | 2011-03-07 | 2016-08-03 | 三星半导体(中国)研究开发有限公司 | Soldered ball and manufacture method thereof |
US9833838B2 (en) * | 2011-07-29 | 2017-12-05 | Baker Hughes, A Ge Company, Llc | Method of controlling the corrosion rate of alloy particles, alloy particle with controlled corrosion rate, and articles comprising the particle |
CH705662A1 (en) | 2011-11-04 | 2013-05-15 | Alstom Technology Ltd | Process for producing articles of a solidified by gamma-prime nickel-base superalloy excretion by selective laser melting (SLM). |
FR3008014B1 (en) | 2013-07-04 | 2023-06-09 | Association Pour La Rech Et Le Developpement De Methodes Et Processus Industriels Armines | METHOD FOR THE ADDITIVE MANUFACTURING OF PARTS BY FUSION OR SINTERING OF POWDER PARTICLES BY MEANS OF A HIGH ENERGY BEAM WITH POWDERS SUITABLE FOR THE PROCESS/MATERIAL TARGETED COUPLE |
US20150132173A1 (en) | 2013-11-12 | 2015-05-14 | Siemens Energy, Inc. | Laser processing of a bed of powdered material with variable masking |
EP3096909A4 (en) | 2014-01-24 | 2017-03-08 | United Technologies Corporation | Alloying metal materials together during additive manufacturing of one or more parts |
WO2015155745A1 (en) * | 2014-04-10 | 2015-10-15 | Ge Avio S.R.L. | Process for forming a component by means of additive manufacturing, and powder dispensing device for carrying out such a process |
AT14301U1 (en) | 2014-07-09 | 2015-07-15 | Plansee Se | Method for producing a component |
DE102015118441A1 (en) | 2014-11-05 | 2016-05-12 | Siemens Energy, Inc. | Composite materials and processes for the laser production and repair of metals |
CN111618300B (en) * | 2014-12-12 | 2022-08-05 | 美题隆公司 | Article and method of forming the same |
DE102015205316A1 (en) * | 2015-03-24 | 2016-09-29 | Siemens Aktiengesellschaft | A method of producing a superalloy member having a powder bed-based additive manufacturing method and superalloy member |
CN105642885B (en) | 2016-03-30 | 2018-10-30 | 西安交通大学 | A kind of thermal spraying self-adhesive metal alloy powders with covered composite yarn structure |
-
2016
- 2016-09-06 DE DE102016216859.2A patent/DE102016216859A1/en not_active Ceased
-
2017
- 2017-08-30 SG SG11201901816QA patent/SG11201901816QA/en unknown
- 2017-08-30 US US16/330,505 patent/US11426797B2/en active Active
- 2017-08-30 WO PCT/EP2017/071725 patent/WO2018046361A1/en unknown
- 2017-08-30 EP EP17768686.2A patent/EP3487651A1/en active Pending
- 2017-08-30 CN CN201780054773.XA patent/CN109641271B/en active Active
- 2017-08-30 CA CA3035696A patent/CA3035696C/en active Active
Also Published As
Publication number | Publication date |
---|---|
SG11201901816QA (en) | 2019-04-29 |
CA3035696A1 (en) | 2018-03-15 |
CN109641271A (en) | 2019-04-16 |
DE102016216859A1 (en) | 2018-03-08 |
CN109641271B (en) | 2021-06-08 |
CA3035696C (en) | 2021-08-24 |
US11426797B2 (en) | 2022-08-30 |
WO2018046361A1 (en) | 2018-03-15 |
US20190193160A1 (en) | 2019-06-27 |
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