Method of manufacturing waveguide microwave devices and elements on 3d printer by method of fused deposition modelling of thread composite abs plastic

FIELD: radio engineering, communication.

SUBSTANCE: method of manufacturing waveguide devices and microwave elements is that all parts are fully made by an additive technology - 3D printing by the fused deposition modelling of composite carbon-containing thermoplastic, and to facilitate applying the current-conducting metal coating onto the working surfaces a housing of a waveguide is separately made. The channel of the housing consists of three walls (housing) and flanges, and a cover. Then a current-conducting metal coating is applied to the working surface of the parts and then assembled into a single structure.

EFFECT: reduction of weight and size characteristics, reduction of labour intensity and time of manufacture while maintaining the technical characteristics, reduction of production cost.

2 dwg

 



 

Same patents:

FIELD: process engineering.

SUBSTANCE: set of inventions relates to production of 3D articles. This process comprises making of flexible film and reiterating the steps that follow. Liquid setting material plies are applied on said film which does not contact with said 3D object. Flexible film is placed to preset position relative to 3D object to apply the ply of liquid setting material on the latter. Said preset area of said ply is solidified. Portions of not solidified ply are removed therefrom to get solid ply of preset shape. Note here that in one of said cycles displacement of said flexible film and said solidification occur simultaneously. Invention covers also the system for implementation of said method.

EFFECT: higher rate of 3D object making.

17 cl, 15 dwg

FIELD: chemistry.

SUBSTANCE: claimed invention relates to a finely-disperse powder of polyaryletherketone for the application as a construction material in the process of the layer-by-layer creation of three-dimensional objects. Described is the finely-disperse polyaryletherketone (PAEK) powder for the application as the construction material in the process of the layer-by-layer creation of three-dimensional objects, with the finely-disperse (PAEK) powder having the melt viscosity below 0.25 kNĚs/m2, D0.90 value lower than 150 mcm, BET specific surface lower than 40 m2/g and bulk density with a value higher or equal to 0.42 g/cm3, and the powder does not require the introduction of auxiliary additives, improving looseness (versions). Also described is a method of layer-by-layer obtaining of a three-dimensional object from the powder-like material, in which successive layers of the created object from the hardening powder material are successively hardened in the places, corresponding to the object cross-section, with the powder material being the powder, mentioned above.

EFFECT: finely-disperse polyaryletherketone powder, possessing characteristics, which make it possible to obtain a high-precision three-dimensional object with high surface quality.

13 cl, 4 dwg, 4 tbl, 7 ex

FIELD: electricity.

SUBSTANCE: invention is related to the sphere of stereolithography, and namely to the lighting system to be used in stereolithography device. Technical result is attained by the lighting system comprising a variety of light-emitting diodes (LEDs). At that each LED has the first light-emitting surface and the second surface, at that one of the above surfaces is flat. A variety of current leads are connected selectively to the respective LEDs so that each LED may be controlled on individual basis. The levelling flat surface is in the levelling contact with the above flat surface of each LED so that in the plane parallel to the levelling surface there is a two-dimensional matrix of LEDs. At that the levelling surface is equipped with a rigid lifting body. At that the lifting body surface is equipped with grooves limited by intermediate fins with current leads laid in them; LEDs are placed at the intermediate fins, which provide the levelling surface.

EFFECT: development of LED-based lighting system with potential joint use with optical system having a large numbered aperture.

13 cl, 6 dwg

FIELD: process engineering.

SUBSTANCE: proposed method comprises making the 3D model of article, its division to plies in cross-section, application of powder, application of model cross-section pattern on powder by liquid binder, ply-by-ply solidification of powder in 3D model unless cycle completion. Powder consists of the mix of fine and granular heat-resistant materials. Mixing is performed in mixing runners to homogeneous bulk. Said liquid binder represents the solutions of magnesium salts and/or organic binder and/or hydraulic binder. Obtained article is cured for at least 2 hours and, then, dried. Carbon component, a plasticiser, can be added to said powder. Produced article can be heat treated at, at least 180░C.

EFFECT: complex shape refractory articles with isotropic properties.

4 cl, 1 dwg, 2 tbl, 15 ex

FIELD: process engineering.

SUBSTANCE: invention relates to production of glazing plant structural element. Particularly, it relates to method of production of said element, namely structural element of colour change system, painting valve or atomiser. Note here that said structural element is produced by fast prototyping. Note also that fast prototyping represents a laser generation wherein metal powder is used, or a first selective laser sintering wherein thermoplastics are used.

EFFECT: perfected process.

22 cl, 10 dwg

FIELD: process engineering.

SUBSTANCE: feed material (34) to be used in digital extrusion system (10) features length (36) and cross-section profile (38) of at least an axially symmetric portion of length (36). Said profile (38) is configured to ensure reaction interval with the help of untrue liquefier (48) of system (10) shorter, compared with cylindrical filament in cylindrical liquefier for the same thermally constricted volumetric fluid flow rate. Method of constructing 3D model in digital extrusion system (10) comprises the steps that follow. Feed material is fed into untrue liquefier to fuse it. Fused feed material is extruded in ply-by-ply manner to form at least a section of 3D model.

EFFECT: lower heat conductivity at the inlet of untrue liquefier.

15 cl, 15 dwg

FIELD: metallurgy.

SUBSTANCE: belt liquefier (38) containing external section (66) of the liquefier, which can receive heat energy from heat-conducting component (40), and channel (72) at least partially determined by external section (66) of the liquefier. Channel (72) has sizes that can receive belt fibre (44). Belt liquefier (38) has the possibility of melting belt fibre (44) received in channel (72) till at least the extruded state by means of heat energy to provide melt flow. Additionally, sizes of channel (72) are such that the melt flow can be brought from an axially asymmetric flow to an axially symmetric flow in extrusion-type tip (52) connected to belt liquefier (38). A manufacturing method of a three-dimensional model in a digital extrusion-type production system involves use of the belt liquefier according to the invention for receiving and melting of the belt fibre till the extruded state and supply of the melt flow in the extrusion tip in the form of an axially symmetric flow.

EFFECT: performing operations with reduced response time and improving deposition accuracy.

15 cl, 13 dwg

FIELD: chemistry.

SUBSTANCE: method of producing said fine powder involves holding fine powder obtained from coarse powder or granulate at temperature at least 20░C higher than the polymer glass-transition temperature for more than 30 minutes. The method of making a three-dimensional object involves successive hardening of layers of the formed objects in places corresponding to the cross-section of the object.

EFFECT: improved method.

17 cl, 4 dwg, 4 tbl, 7 ex

FIELD: chemistry.

SUBSTANCE: invention relates to an additive which increases water-resistance and is suitable for making composite panels, which contains triglyceride with saponification number of at least 150 and iodine number of at least 35 and at least one nonionic emulsifiier, which contains a fatty acid ester and a polyalcohol, wherein the additive does not contain hydrocarbon wax. The invention also relates to a composite panel and a method of making a composite panel using said additive.

EFFECT: additives gives composite panels resistance to moisture absorption and swelling.

17 cl, 4 tbl, 7 ex

FIELD: chemistry.

SUBSTANCE: invention relates to additive, which increases waterproofness. Additive is suitable for production of composite panels and is present in form of emulsion, containing from 10 to 50 wt % of triglyceride with saponification number, at least, 150 and iodine number, at least, 35; from 0.5 to 20 wt % of hydrocarbon wax; from 0.5 to 3 wt % of linear fatty acids C12-C22; compound or compounds, selected from group, consisting of amine in amount from 0.5 to 3 wt % of emulsion; inorganic base in amount from 0.5 to 6 wt% of emulsion and their mixtures; and water. Invention also relates to composite panel, made with application of said additive and method of panel manufacturing.

EFFECT: claimed additive gives composite panels resistance to water absorption and swelling.

13 cl, 3 ex, 2 tbl

FIELD: process engineering.

SUBSTANCE: invention relates to flexible elastomer polyurethane skin for decoration of car interior and method of its production. Proposed skin comprises first and second flexible layers produced by spraying first and second reaction mixes on each other to produce polyurethane. Spraying of second reaction mix is started in no later than 90 s after termination of spraying first reaction mix. First reaction mix is intended for producing aliphatic polyurethane and consists of isocyanate component, components reactive with respect to isocyanate, and catalytic component with lead content less than 2 molar fractions. Second reaction mix is intended for producing aromatic polyurethane. Mean weight of unit surface of proposed skin makes, at least, 0.6 kg/m2 and mean flexure modulus makes less than 30 MPa.

EFFECT: higher flexibility, no lead, stability of colour.

24 cl, 6 tbl, 6 ex, 4 dwg

The invention relates to a method for laying tape on the work surface, and more specifically to controlling the position of the tape during its installation

FIELD: process engineering.

SUBSTANCE: invention relates to flexible elastomer polyurethane skin for decoration of car interior and method of its production. Proposed skin comprises first and second flexible layers produced by spraying first and second reaction mixes on each other to produce polyurethane. Spraying of second reaction mix is started in no later than 90 s after termination of spraying first reaction mix. First reaction mix is intended for producing aliphatic polyurethane and consists of isocyanate component, components reactive with respect to isocyanate, and catalytic component with lead content less than 2 molar fractions. Second reaction mix is intended for producing aromatic polyurethane. Mean weight of unit surface of proposed skin makes, at least, 0.6 kg/m2 and mean flexure modulus makes less than 30 MPa.

EFFECT: higher flexibility, no lead, stability of colour.

24 cl, 6 tbl, 6 ex, 4 dwg

FIELD: process engineering.

SUBSTANCE: in compliance with this invention, polyurethane reaction mix is sprayed on mould surface and cured thereon to get the leather ply. Said process comprises the steps that follow. Reaction mix is prepared from components including at least one isocyanate component, components that can react with isocyanate and metalorganic catalytic component. Note here that said isocyanate component comprises at least one isocyanate with two NCO-groups not connected directly to aromatic group while said catalytic component does not, in fact, contain lead. Note here that components that can react with isocyanate include component with active hydrogen atom consisting of at least one compound with functional groups composed of primary and/or secondary PH-groups, NH-groups and/or NH2-groups. Aforesaid ply features rated functionality of 2 to 8 and equivalent weight of 100-4000, preferably, 500-2000. Polyurethane reaction mix is sprayed on mould surface and cured thereon to get the leather ply. Produced polyurethane ply is removed from mould surface. Note here that components that can react with isocyanate include at least one plasticizing agent including at least one group that can react with isocyanate to decrease coefficient of elasticity at flexure of leather. Note also that said plasticiser includes at least one group that can react with isocyanate group.

EFFECT: coefficient of elasticity at leather flexure lower than 35 MPa, preferably, lower than 30 MPa or even less, leather ply containing no lead.

15 cl, 4 dwg, 6 tbl, 6 ex

FIELD: technological processes.

SUBSTANCE: invention relates to synthesis technologies field, i.e. producing three-dimensional physical objects by additional application (deposition) using polymer materials, particularly, to jet three-dimensional printing technologies. Method of three-dimensional jet printer printing comprises three-dimensional printer printing head controlled movement, supply of, at least, two threads of meltable material into printing head, threads warming up by heaters with controlled temperature, alternating connection of one of nozzles via printer control module and supply of thread under pressure into active nozzle. During nozzles switching printer control module switches on eccentric motor for its rotation. Moving platform is driven into movement around axial screw axis. During movable platform movement one of nozzles is brought into active position by means of driven into inactive position nozzle driven gear disengagement from drive gear and driven into active position nozzle drive gear engagement. At that, movable platform movement displaces nozzles position relative to valve for nozzles, locking inactive nozzles holes and opening active nozzle hole. After movable platform complete fixation in first nozzle activation position printer continues printing with this nozzle.

EFFECT: technical result achieved when using method according to invention consists in improvement of produced three-dimensional models quality with reduction of time for one three-dimensional model making.

5 cl, 1 tbl, 6 dwg

FIELD: radio engineering, communication.

SUBSTANCE: method of manufacturing waveguide devices and microwave elements is that all parts are fully made by an additive technology - 3D printing by the fused deposition modelling of composite carbon-containing thermoplastic, and to facilitate applying the current-conducting metal coating onto the working surfaces a housing of a waveguide is separately made. The channel of the housing consists of three walls (housing) and flanges, and a cover. Then a current-conducting metal coating is applied to the working surface of the parts and then assembled into a single structure.

EFFECT: reduction of weight and size characteristics, reduction of labour intensity and time of manufacture while maintaining the technical characteristics, reduction of production cost.

2 dwg

FIELD: chemistry.

SUBSTANCE: electroconductive polymer composition for 3D-printing is described, consisting of a polymer base, a carbon filler, which additionally contains an antioxidant, syndiotactic 1,2-polybutadiene is used as a polymer base in the following ratio, wt %: 1.2 of SPD - 77,5-94,5; carbon black - 3-20; antioxidant - 2.5.

EFFECT: prepairing of polymer compositions with improved conductivity and processability intended for 3D-printing.

3 cl, 1 tbl, 11 ex

FIELD: printing industry.

SUBSTANCE: equipment set includes a system of moulding modules coupled with the conveyor system, a three-dimensional moulding system, a liquid removal system and a recovery system. The moulding system includes a conveyor, multiple moulding units and at least one forming station equipped with a system of powder layer application and a printing system. The set of equipment can be used for manufcaturing pharmaceutical, medical and non-pharmaceutical / non-medical products. It can be used for preparing single pieces or series of products.

EFFECT: enables continuous or batch production by means of three-dimensional printing with minimum product loss, high efficiency and high product repeatability due to flexibility of the product.

74 cl, 44 dwg

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