WO2023105436A1 - Procédé de fabrication d'un dispositif à guide d'ondes par fabrication additive et par polissage - Google Patents
Procédé de fabrication d'un dispositif à guide d'ondes par fabrication additive et par polissage Download PDFInfo
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- WO2023105436A1 WO2023105436A1 PCT/IB2022/061877 IB2022061877W WO2023105436A1 WO 2023105436 A1 WO2023105436 A1 WO 2023105436A1 IB 2022061877 W IB2022061877 W IB 2022061877W WO 2023105436 A1 WO2023105436 A1 WO 2023105436A1
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- WIPO (PCT)
- Prior art keywords
- metal core
- process according
- manufacturing process
- thickness
- bath
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 58
- 238000005498 polishing Methods 0.000 title claims abstract description 36
- 239000000654 additive Substances 0.000 title claims abstract description 27
- 230000000996 additive effect Effects 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title abstract description 16
- 229910052751 metal Inorganic materials 0.000 claims abstract description 47
- 239000002184 metal Substances 0.000 claims abstract description 47
- 238000002679 ablation Methods 0.000 claims abstract description 21
- 239000002253 acid Substances 0.000 claims description 24
- 239000000126 substance Substances 0.000 claims description 22
- 239000000843 powder Substances 0.000 claims description 20
- 229910052782 aluminium Inorganic materials 0.000 claims description 13
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 13
- 238000007639 printing Methods 0.000 claims description 9
- 230000008018 melting Effects 0.000 claims description 8
- 238000002844 melting Methods 0.000 claims description 8
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- 150000007513 acids Chemical class 0.000 claims description 5
- 238000002604 ultrasonography Methods 0.000 claims description 5
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 4
- 238000007654 immersion Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 229910017604 nitric acid Inorganic materials 0.000 claims description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 3
- 239000003518 caustics Substances 0.000 claims description 3
- 235000011007 phosphoric acid Nutrition 0.000 claims description 3
- 239000000463 material Substances 0.000 description 10
- 230000004927 fusion Effects 0.000 description 7
- 239000000243 solution Substances 0.000 description 7
- 238000010146 3D printing Methods 0.000 description 5
- 238000007517 polishing process Methods 0.000 description 4
- 238000000110 selective laser sintering Methods 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000002791 soaking Methods 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 229910001374 Invar Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 229910001200 Ferrotitanium Inorganic materials 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000007499 fusion processing Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 210000000554 iris Anatomy 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 150000007522 mineralic acids Chemical class 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 239000013598 vector Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P11/00—Apparatus or processes specially adapted for manufacturing waveguides or resonators, lines, or other devices of the waveguide type
- H01P11/001—Manufacturing waveguides or transmission lines of the waveguide type
- H01P11/002—Manufacturing hollow waveguides
-
- 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
- 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
- B22F10/60—Treatment of workpieces or articles after build-up
- B22F10/62—Treatment of workpieces or articles after build-up by chemical means
-
- 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
- B22F10/60—Treatment of workpieces or articles after build-up
- B22F10/68—Cleaning or washing
-
- 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
- B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
-
- 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
- B33Y10/00—Processes of additive manufacturing
-
- 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
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
- B33Y40/20—Post-treatment, e.g. curing, coating or polishing
-
- 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
- B33Y80/00—Products made by additive manufacturing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P3/00—Waveguides; Transmission lines of the waveguide type
- H01P3/12—Hollow waveguides
-
- 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
- B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
Definitions
- the present invention relates to a method of manufacturing a waveguide device by additive manufacturing and by polishing and a waveguide manufactured according to this method.
- Radiofrequency (RF) signals can propagate either in space or in waveguide devices. These waveguide devices are used to channel RF signals or to manipulate them in the spatial or frequency domain.
- the present invention relates in particular to passive RF devices which make it possible to propagate and manipulate radio frequency signals without using components active electronics.
- Passive waveguide devices can be divided into three distinct categories: • Devices based on guiding waves inside hollow metal channels, commonly referred to as waveguides.
- the present invention relates in particular to the manufacture of waveguide devices according to the first category above, collectively referred to below as waveguide devices.
- waveguide devices include waveguides as such, filters, antennas, polarizers, mode converters, etc. They can be used for signal routing, frequency filtering, separation or recombination of signals, transmission or reception of signals in or from free space, etc.
- Conventional waveguides consist of hollow devices, the shape and proportions of which determine the propagation characteristics for a given wavelength of the electromagnetic signal.
- Conventional waveguides used for radio frequency signals have internal openings of rectangular or circular section. They make it possible to propagate electromagnetic modes corresponding to different electromagnetic field distributions along their section.
- US2012/0084968 proposes making waveguides by 3D printing.
- a non-conductive plastic core is printed by an additive method and then covered with a metal plating by immersion.
- the internal surfaces of the waveguide must in fact be electrically conductive in order to operate.
- the use of a non-conductive core makes it possible on the one hand to reduce the weight and the cost of the device and, on the other hand, to implement 3D printing methods adapted to polymers or ceramics and to produce high-precision parts with low wall roughness.
- the parts described in this document have complex shapes and comprise on the one hand a channel for the propagation of the wave, and on the other hand fixing holes on a foot of the waveguide, in order to fix it to a other element.
- 3D printing techniques include 3D printing by selective laser melting (SLM). It is a selective powder bed fusion process in which a laser is used to fuse together fine particles of metal. Following the route determined by computer, it will melt the metal particles until they merge together. A powder spreading system will then apply a new layer of powder. The laser will draw the next stratum. These steps will follow one another until the total impression of the object.
- SLM selective laser melting
- SLM printing makes it possible to print a layer thickness varying from 0.02 mm to 0.10 mm on the Z axis
- the resolution on the X and Y axes depends on the diameter of the laser beam of the machine.
- Standard SLM machines work with 0.080mm and 0.1mm diameter lasers.
- the weld pool around the laser beam for aluminum has a diameter of about 0.250mm.
- at least 2 vectors are needed to manufacture a wall of the waveguide, hence a minimum thickness of 0.5 mm.
- the metal parts obtained by this process can have, depending on the desired shape, layer thicknesses going well beyond the Z resolution of the machine which are imposed by the aforementioned constraints. This has a direct impact on the weight of the parts produced.
- SLS selective laser sintering
- PETRONILO MARTIN-IGLESIAS ET AL "Additive Manufacturing for RF Passive Hardware", 46TH EUROPEAN MICROWAVE CONFERENCE, 4-6 OCTOBER 2016, LONDON, UK, pages 1-174 discloses the use of a polishing process chemical in waveguide devices obtained by additive manufacturing.
- CN106757039B discloses an aluminum oxide based chemical polishing liquid and a method of making the same. The use of this liquid for polishing RF components is not mentioned. In addition, this liquid seems intended to improve the aesthetic rendering of polished parts.
- Document GB2575365A discloses a chemical polishing process for a titanium surface obtained by additive manufacturing. Use for RF devices is not disclosed.
- An object of the present invention is therefore to provide an additive manufacturing process of the SLM type making it possible to produce a lighter waveguide device.
- an object of the present invention is to allow the manufacture of a metal or plastic waveguide device which has a thickness of less than 0.5 mm on any portion of the device, and preferably less than 0.3mm, or even less than 0.2mm.
- a method of manufacturing a waveguide device comprising a step consisting in producing, by additive manufacturing, a semi-finished metal or plastic core.
- the semi-finished core has walls sides having outer and inner surfaces.
- the inner surfaces define a waveguide channel.
- the manufacturing method also comprises a step of chemical polishing of the metal core in order to reduce, preferably uniformly, the thickness of said side walls by an ablation thickness equal to at least twice a roughness of the core metal (2) before polishing, in order to obtain the waveguide device.
- the ablation thickness is equal to at least 0.02 mm, preferably to at least 0.05 mm.
- the ablation thickness is greater than an additive printing layer thickness.
- the metal core is produced by additive manufacturing by laser powder bed fusion (SLM) in order to obtain a semi-finished metal core, and the ablation thickness is equal to at at least 1.5 times a powder grain size of said powder bed.
- SLM laser powder bed fusion
- the metal core is produced by additive manufacturing by laser powder bed fusion (SLM) in order to obtain a semi-finished metal core
- the thickness of the laser spot used for fusion has a diameter between 0.03mm and 0.1mm and the ablation thickness is between 0.02mm and 0.06mm.
- the core is metallic is produced by additive manufacturing by laser melting on a powder bed in order to obtain a semi-finished metallic core whose thickness of the side walls is equal to or less than 0. .5mm.
- the internal waveguide opening of the semi-finished metal core has an oblong, hexagonal, pentagonal, ovoid, or circular cross-section.
- the thickness of said side walls is less than 0.3 mm, or even less than 0.2 mm after the chemical polishing step.
- the manufacturing method further comprises a step consisting in generating a digital model of the metal core.
- the numerical model is calculated in order to optimize the shape of the semi-finished metal core according to the thickness to be removed by chemical polishing.
- the chemical polishing step consists of immersing the semi-finished metal core in an acid bath.
- the acid bath can comprise a mixture of two acids.
- the acid bath may comprise orthophosphoric acid and sulfuric acid, in order to obtain, for example, a shine.
- the chemical polishing step consists of immersing the semi-finished metal core in a basic bath, for example to perform a satin finish.
- the basic bath may include a caustic solution and have a pH greater than 11.5.
- a step of immersing the metal core in an acid deoxidation bath following immersion in said basic bath in order to remove the oxidized residues on the surface of the parts.
- the method may include a step of immersing the metal core in an acid bath, for example a bath containing nitric acid and ammonium bi-fluoride, with a pH preferably less than 2.
- the method may include a step of immersing the metal core in a heated acid bath with the application of ultrasound to clean it.
- the density of the bath is in a range between 1.5 g/cm 3 and 2 g/cm 3 , preferably around 1.7 g/cm 3 .
- the acid bath treatment temperature is between 70°C and 120°C.
- the acid bath further comprises dissolved aluminum at a concentration of between 20 and 50 g/l, preferably between 25 and 45 g/l.
- a waveguide device comprising a metal core having side walls having external and internal surfaces.
- the inner surfaces define a waveguide channel.
- the thickness of said side walls is less than 0.3 mm, or even less than 0.2 mm.
- Figure 1 illustrates a perspective view of a waveguide device with an internal opening or channel, obtained by an SLM method according to one embodiment
- Figure 2 illustrates a view similar to Figure 1 after a polishing step according to one embodiment
- Figure 3 illustrates a schematic view of a portion of a waveguide device immersed in a polishing bath in order to level the microscopic roughness on the surface of the aluminum.
- the waveguide device 1 comprises a metal core 2, for example aluminum, titanium, steel, invar or an alloy of these metals.
- the core 2 is manufactured by additive manufacturing, preferably by stereolithography, by selective laser melting (“selective laser melting”), by “selective laser sintering” (SLS), by “binder jetting” or by energy deposition concentrated (“direct energy deposition (DED)”).
- selective laser melting selective laser melting
- SLS selective laser sintering
- DED direct energy deposition
- the thickness of the walls of the core is for example at least 0.5 mm.
- the shape of the core can be determined by a computer file stored in a computer data carrier.
- This core 2 delimits an internal opening 5 forming a channel intended for waveguiding.
- the core 2 therefore has an internal surface 22 and an external surface 21 defining the internal opening 5 which is for example of cross section of oblong shape.
- a chemical polishing bath 25 works by leveling the microscopic surface roughness of the material, for example aluminum 30, used to form the core. Polishing is a process that reduces the roughness Ra of the material and allows it to better reflect light (specularity). To do this, the peaks and valleys (or hollows) on the surface of the material are leveled, as can be seen in Figure 3. Polishing is carried out by soaking the parts in a bath, with permanent stirring.
- the roughness Ra of the material or mean roughness or arithmetic mean roughness designates the mean difference between the peaks and valleys of the material at the scale of the particles (or grains) used for additive manufacturing.
- the polishing step of the present invention aims, in addition to improving the specularity of the material, to reduce the thickness of the walls of the waveguide device. Such a reduction in the thickness of the walls is desirable mainly because it makes it possible to significantly reduce the weight of the device.
- the thickness of the side walls of the device must be reduced by polishing an ablation thickness equal to at least twice the roughness of the material before the polishing step.
- the roughness Ra before polishing varies depending on the material used for the additive manufacturing of the metal core, but is generally between 0.05 ⁇ m and 20 ⁇ m for the materials considered in the manufacture of the device, for example aluminum, titanium or stainless steel. steel or invar.
- this ablation thickness is equal to at least 0.02 mm.
- the ablation thickness is equal to at least 0.05 mm.
- the thickness of the side walls of the metal core may be greater, it is typically less than 0.5 mm after polishing in order to reduce the weight of the device.
- the ablation thickness represents a substantial proportion of the thickness of the walls before polishing.
- the ablation thickness is greater than the thickness of the additive printing layers.
- the thickness of an additive printing layer can vary according to the printing techniques and according to the type of part manufactured, but is generally between 0.03mm and 0.06mm.
- the ablation thickness is greater than 1.5 times the size of the grains of the powder used. These grains have a diameter between 0.01 mm and 0.065 mm. Thus, the ablation thickness is between 0.015mm and 0.098mm. More specifically, the particle size distribution (Particle Size Distribution) is usually between 0.01 mm and 0.065 mm, with a factor D10, that is to say that a maximum of 10% of the grains of the batch of powder has a size less than 0.01 mm. In general, the ablation thickness is at least equal to the factor D10 of the batch of powder used for the manufacture.
- SLM powder bed laser fusion
- the thickness of the laser spot used to fuse the powder can be between 0.03 mm and 0.1 mm.
- the ablation thickness is between 0.02mm and 0.06mm.
- the bath can be constituted by a mixture of 2 acids. Additives make it possible to obtain a homogeneous polishing of the surface in terms of roughness and thickness. To allow a perfect smoothing of the aluminum surface, the chemical attack must be faster on the peaks than in the valleys.
- the sulfuric acid reacts with the aluminum to form a thin film of aluminum oxide 40. This film is simultaneously dissolved by the orthophosphoric acid. These reactions occur faster at the peaks than at the valleys because the pool is very viscous and there is less movement and fluid agitation in the valleys than at the peaks.
- the polishing can implement a basic mixture, for example to perform a satin finish.
- the method includes immersing the semi-finished waveguide in a solution in the presence of salts of organic and inorganic acids, alkalis and polyfunctional organic hydroxyl compounds.
- the solution may include, for example:
- the pH of the solution is preferably greater than 11.5.
- the part thus satin-brushed with the previous bath can be immersed in a deoxidation bath, in order to remove the oxidized residues on the surface of the parts. after satin-finishing, and to eliminate the layer of aluminum oxide on the surface of the parts.
- the deoxidation bath can be an acid bath, for example a bath containing nitric acid, with a pH preferably below 2.
- the part thus glazed can also be bleached by immersion in an acid bath, for example a bath containing nitric acid and ammonium bi-fluoride, with a pH preferably less than 2.
- an acid bath for example a bath containing nitric acid and ammonium bi-fluoride, with a pH preferably less than 2.
- This bleaching can in particular be applied to an aluminum or aluminum alloy waveguide.
- the part thus glazed can also be immersed in an acid bath, for example concentrated at 10%, for example with a pH of less than 3, with the application of ultrasound to clean it.
- the parts can be immersed in a solution with a temperature of 60 to 65°C, with ultrasound applied for a duration between 2 and 30 minutes, followed by a sequence of 30 min to 1 hour of soaking without ultrasound, with a temperature maintained at 60°C. These sequences must be repeated 5 times to obtain a good cleaning. After each ultrasonic sequence, the acidic solution is removed and replaced with fresh solution, allowing effective chemical and ultrasonic activity.
- the bath therefore makes it possible to reduce the thickness of the walls 20 of the core 2 so that this thickness between the external surfaces 21 of the core 2 and the internal surfaces of the core 2 defining the internal opening (channel) 5 is reduced to 0.3 mm, or even less than 0.2 mm after the chemical polishing step.
- the invention also relates to a waveguide device obtained according to one of the above embodiments and comprising a metal core 2 comprising side walls 20 having external 21 and internal 22 surfaces, the internal surfaces 22 defining an internal opening 5 of the waveguide, in which the thickness of said side walls 20 is less than 0.3 mm, or even less than 0.2 mm.
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- ing And Chemical Polishing (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
- Waveguides (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IL313362A IL313362A (en) | 2021-12-08 | 2022-12-07 | Manufacturing process of a waveguide device using additive manufacturing and polishing |
CN202280080431.6A CN118355559A (zh) | 2021-12-08 | 2022-12-07 | 通过增材制造和抛光的波导器件的制造方法 |
KR1020247020196A KR20240118098A (ko) | 2021-12-08 | 2022-12-07 | 적층 제조 및 연마에 의한 도파관 장치의 제조 공정 |
CA3239423A CA3239423A1 (fr) | 2021-12-08 | 2022-12-07 | Procede de fabrication d'un dispositif a guide d'ondes par fabrication additive et par polissage |
EP22822682.5A EP4445446A1 (fr) | 2021-12-08 | 2022-12-07 | Procédé de fabrication d'un dispositif à guide d'ondes par fabrication additive et par polissage |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FRFR2113174 | 2021-12-08 | ||
FR2113174A FR3130080B1 (fr) | 2021-12-08 | 2021-12-08 | Procédé de fabrication d’un dispositif à guide d’ondes par fabrication additive et par polissage |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2023105436A1 true WO2023105436A1 (fr) | 2023-06-15 |
Family
ID=81326147
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2022/061877 WO2023105436A1 (fr) | 2021-12-08 | 2022-12-07 | Procédé de fabrication d'un dispositif à guide d'ondes par fabrication additive et par polissage |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP4445446A1 (fr) |
KR (1) | KR20240118098A (fr) |
CN (1) | CN118355559A (fr) |
CA (1) | CA3239423A1 (fr) |
FR (1) | FR3130080B1 (fr) |
IL (1) | IL313362A (fr) |
WO (1) | WO2023105436A1 (fr) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20120084968A1 (en) | 2010-09-29 | 2012-04-12 | Jayesh Nath | Systems and methods for manufacturing passive waveguide components |
CN106757039A (zh) | 2017-02-23 | 2017-05-31 | 浙江大学 | 一种铝氧化抛光液及其制备方法 |
GB2575365A (en) | 2018-07-05 | 2020-01-08 | South West Metal Finishing Ltd | Process |
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2021
- 2021-12-08 FR FR2113174A patent/FR3130080B1/fr active Active
-
2022
- 2022-12-07 IL IL313362A patent/IL313362A/en unknown
- 2022-12-07 WO PCT/IB2022/061877 patent/WO2023105436A1/fr active Application Filing
- 2022-12-07 CN CN202280080431.6A patent/CN118355559A/zh active Pending
- 2022-12-07 CA CA3239423A patent/CA3239423A1/fr active Pending
- 2022-12-07 EP EP22822682.5A patent/EP4445446A1/fr active Pending
- 2022-12-07 KR KR1020247020196A patent/KR20240118098A/ko unknown
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CN118355559A (zh) | 2024-07-16 |
FR3130080A1 (fr) | 2023-06-09 |
IL313362A (en) | 2024-08-01 |
CA3239423A1 (fr) | 2023-06-15 |
EP4445446A1 (fr) | 2024-10-16 |
KR20240118098A (ko) | 2024-08-02 |
FR3130080B1 (fr) | 2024-05-10 |
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