Glass and mineral or slag wool (C03)

C   Chemistry; metallurgy(312744)
C03            Glass; mineral or slag wool(14208)

ethod and device for positioning glass sheets for moulding purpose // 2613657
FIELD: technological processes.SUBSTANCE: method comprises positioning tools (55), which move slower than transport speed of the glass sheet, providing the angled adjustment of the glass sheet for aligning over the moulding form (52). The mentioned moulding form (52) moves upwards for moulding by method of pressing to the upper form (58) facing downwards. Both pre-moulded and flat glass sheets can be presented by various embodiments of the mentioned device.EFFECT: improved efficiency of positioning method of the heated glass sheet relative to the forming mould for moulding purpose.16 cl, 11 dwg

Articles including anti-condensate and/or low-emissivity coatings and/or their production methods // 2613652
FIELD: manufacturing technology.SUBSTANCE: invention relates to articles with an anti-condensate coating. Insulating glass unit has the first and the second glass plates. On the first surface of the first glass plate multiple layers are applied. Multiple layers are included in the following order starting from the first glass plate: a layer of silicon oxynitride with the refractive index of 1.5–2.1; a layer including ITO with the refraction index of 1.7–2.1; a layer of silicon oxynitride with the refractive index of 1.5–2.1. Thermally treated is the first glass plate with multiple layers by laser annealing. Second glass plate is located parallel to the first one and at some distance from it. First main surface of the first glass plate as-assembled faces the side opposite to the second glass plate. First glass plate with multiple layers on the first main surface of the first glass plate after the thermal treatment has a hemispherical radiation coefficient less than or equal to approximately 0.20 and a surface layer resistance less or equal to approximately 20 Ohm/square.EFFECT: higher strength of the coating and prevention of condensate formation.17 cl, 8 dwg, 7 tbl

Articles including anti-condensate and/or energy-saving coatings and/or their production methods // 2613236
FIELD: manufacturing technology.SUBSTANCE: invention relates to articles with an anti-condensate coating. Insulating glass unit has the first and the second glass plates. On the first surface of the first glass plate multiple layers are applied. Multiple layers are included in the following order starting from the first glass plate: a layer of silicone oxynitride with the refractive index of 1.5–2.1; a layer including ITO with the refraction index of 1.7–2.1; a layer of silicone oxynitride with the refractive index of 1.5–2.1. Second glass plate is located parallel to the first one and at some distance from it. First main surface of the first glass plate as-assembled faces the side opposite to the second glass plate. First glass plate with multiple layers on the first main surface of the first glass plate after heat treatment has a coefficient of hemispherical radiation smaller than or equal to approximately 0.20 and a surface layer resistance less or equal to approximately 20 Ω/square.EFFECT: higher strength of the coating and prevention of condensate formation.21 cl, 8 dwg, 7 tbl

Control of gas circulation in glassmaking furnace // 2612758
FIELD: glass.SUBSTANCE: group of inventions relates to glassmaking furnace operation methods. Method consists in fact, that glassmaking material is melted in glassmaking chamber melting zone for producing of melted glassmaking material bath due to heat, supplied to melting zone above bath during fuel combustion and preheated oxidizer from two or more pairs of regenerator opposite holes in glass melting furnace side walls, where when combustion atmosphere is created containing combustion products above bath in melting zone. Then passing melted glassmaking material from melting zone inside and through glassmaking chamber refining zone, and then from glassmaking chamber through opening in front wall without combustion of fuel and oxidizer in refining zone over melted glassmaking materials. After that introducing gas flow or sprayed fluid medium into refining zone above molten glassmaking material either simultaneously from pair of opposite injectors, arranged on refining zone opposite side walls, or alternately from each injector, included in said pair of opposite injectors, in direction to refining zone other side wall. If said flows are introduced simultaneously, ratio of sum of flames flows full amount from pair of regenerator opposite openings, closest to front wall, and total amount of flows from one of injectors to total amount of flows from another injector is from 0.25 to 3.0. If said flows are introduced alternately, number of gas or sprayed fluid media flow, which come from such injector, ranges from 25 to 300 % relative to amount of flame flows from regenerator opening, with sufficient amount of flow for combustion products flow reduction from melting zone into refining zone.EFFECT: technical result is reduced corrosion of refractory materials and higher quality of molten glass.25 cl, 6 dwg

Pre-sintered workpiece for teeth // 2612707
FIELD: glass.SUBSTANCE: described are pre-sintered workpieces based on glass ceramics based on lithium metasilicate, which are, in particular, suitable for dental restorations making. Pre-sintered workpiece for glass ceramics based on teeth based on lithium metasilicate has relative density from 66 to 90 %, preferably, from 70 to 86 % with respect to true density of corresponding lithium disilicate based glass ceramics subjected to compaction sintering. Lithium metasilicate based glass ceramics contains, wt%: SiO2 from 50.0 to 80.0, Li2O from 6.0 to 20.0 and, at least, one of following components in specified amount of: Me(I)2O up to 10.0, Me(II)O up to 12.0, Me(III)2O3 up to 8.0, Me(IV)O2 up to 8.0, Me(V)2O5 up to 8.0, in Me(VI)O3 up to 8.0, crystallization seed up to 8.0. Workpiece is produced by corresponding composition pressed glass powder heat treatment at temperature, preferably, of 600–700 °C, at which workpiece relative density in 30K area varies by less than for 2.5 %.EFFECT: technical result of invention is producing of workpieces, which can be easily processed by grinding and milling and which after compaction sintering are converted into high-strength dental articles.16 cl, 3 tbl, 18 ex, 4 dwg
Ceramic pigment // 2612384
FIELD: chemistry.SUBSTANCE: ceramic pigment contains, wt %: Ga2O3 32.0-36.0; CaO 20.0-24.0; Sm2O3 20.0-24.0; TiO2 20.0-24.0. Pigment colour is yellow.EFFECT: increased alkali resistance of pigment.1 tbl
Glaze // 2612383
FIELD: motors and pumps.SUBSTANCE: glaze contains, wt %: SiO2 38.0-41.0; Al2O3 0.5-1.5; B2O3 15.0-17.0; ZnO 7.0-8.0; ZrO2 15.0-16.0; CaO 15.0-16.5; Na3AlF6 4.5-5.5.EFFECT: increased heat resistance.1 tbl
Glass // 2612381
FIELD: chemistry.SUBSTANCE: glass contains the following in wt %: SiO2 74.5-83.0, SnO2 0.5-2.0, at least one component from the group of BeO, MgO, CaO 15.0-25.0.EFFECT: increased heat resistance of glass.1 tbl
Glass // 2612380
FIELD: chemistry.SUBSTANCE: glass contains the following in wt %: SiO2 30.0-35.0; Al2O3 1.0-2.0 ; CdO 37.0-40.0; SnO2 2.0-2.8 ; one oxide from the group of Li2O, Na2O, K2O 24.2-26.0.EFFECT: glass melting temperature decrease.1 tbl
Glaze // 2612379
FIELD: chemistry.SUBSTANCE: glaze includes, wt %: quartz sand 45.5-54.5; red lead 20-25; potash 10-15; soda 1-2; cobalt oxide 0.5-1; copper oxide 0.5-1; portland cement 5-7; drill 5-7.EFFECT: increased frost resistance.1 tbl
Glass // 2612377
FIELD: chemistry.SUBSTANCE: glass contains the following in wt %: WO3 15.0-16.0; TeO2 64.0-65.0; Eu2O3 7.0-8.0; Gd2O3 11.0-12.0.EFFECT: simplified technology of glass production.1 tbl
Enamel // 2612376
FIELD: chemistry.SUBSTANCE: enamel consists of the following, wt %: SiO2 58.0-61.0; Na2O 4.0-5.0; B2O3 9.8-10.6; Al2O3 13.0-15.0; CaO 3.2-4.0; MgO 1.0-2.0; CoO 0.1-0.2; NiO 0.1-0.3; ZrO2 5.5-6.2; Nd2O3 0.2-0.4.EFFECT: increased acid resistance.1 tbl
Device for vacuum degassing of molten glass mass // 2612180
FIELD: physics.SUBSTANCE: invention relates to a device for vacuum degassing of molten glass mass. The device for vacuum degassing of molten glass mass comprises a crucible and a vacuum bell jar. The crucible is mounted on a pusher rod with a movable hearth. A cushion of granular material is sprinkled on the floor. The device has an extensible cover, under which the vacuum bell jar is mounted with possibility of contact with the cushion of the movable hearth when the extensible cover is open.EFFECT: vacuum degassing device which improves the quality of molten glass mass.4 cl, 2 dwg

Optical fibre producing method and device and optical fibre // 2612176
FIELD: optics.SUBSTANCE: invention relates to method and device for optical fibre production and optical fibre, produced using said method and this device. Device is equipped with holder, in which optical fibre workpiece is installed, and heater, arranged outside of holder, for holder heating from outside and ensures optical fibre manufacturing by fibre glass drawing during heating and optical fibre workpiece melting and fibre drawing to outside through outlet hole in holder lower part. Gas supplied to holder, is gas containing 50 % or more of argon or nitrogen, and provided is protective tube with length of Da (mm), located under holder, wherein protective tube has heat-insulating area, covered with heat insulator, with length Db (mm) in its upper part and area, which is not heat-insulating, which is not covered with any heat insulators, in its lower part, and setting parameters are set so, that glass fibre temperature in protective tube outlet hole was equal to 1,700 °C or less and that glass fibre outer diameter in protective tube outlet hole was not exceeding interval of values of glass fibre target external diameter + 6 mqm or less.EFFECT: technical result consists in producing of optical fibre with small spread along its diameter having losses during transmission, not exceeding specified value, without using special devices for glass fibre slow cooling.11 cl, 5 dwg

Pre-sintered blank for dental purposes // 2611809
FIELD: technological processes.SUBSTANCE: invention relates to sintered blank for dental application. Pre-sintered blank for dental application is glass ceramic based on lithium disilicate. Blank has relative density from 60 to 90 % with respect to true density of glass ceramic. Initial glass powder with average particle size < 100 mcm at pressure of 20 MPa to 200 MPa is subjected to uniaxial or isostatic pressing. Obtained pressed shape of powder glass for 2 to 120 minutes is subjected to heat treatment at temperature of at least 500 °C. Temperature of heat treatment is in area, which occupies at least 30 K, and where relative density varies by less than 2.5 %.EFFECT: reduced shrinkage during sintering.15 cl, 2 dwg, 3 tbl, 6 ex
Etching solution for glass treatment // 2611772
FIELD: chemistry.SUBSTANCE: etching solution for glass treatment, comprising hydrofluoric acid, nitric acid, polyacrylamide and water, additionally contains hydrochloric acid and glycerol in the following ratio, mass %: hydrofluoric acid 50.0-60.0; nitric acid 20.0-30.0; polyacrylamide 2.0-3.0; hydrochloric acid 9.0-11.0; glycerin 1.0-2.0; water 5.0-7.0.EFFECT: increased etching process rate.1 tbl
Enamel // 2611656
FIELD: chemistry.SUBSTANCE: enamel consists of the following, wt %: SiO2 35.0-42.0; ZnO 10.2-12.0; Na2O 0.5-3.5; Al2O3 18.0-21.0; CaO 0.3-0.5; B2O3 8.0-10.0; TiO2 6.0-10.0; CeO2 1.0-2.0; MoO3 1.0-3.0; ZrO2 5.0-8.0.EFFECT: increased enamel chemical resistance of acids.1 tbl
Glaze // 2611641
FIELD: chemistry.SUBSTANCE: glaze contains, wt %: SiO2 30.0-35.0; Al2O3 1.5-3.0; Fe2O3 10-1.4; CaO 3.0-5.0; MgO 0.5-1.0; K2O 10.4-11.6; Na2O 8.7-10.2; B2O3 4.0-6.0; P2O5 14.3-19.7; Mn2O3 14.0-19.0; S2- 0.2-0.5.EFFECT: low melting temperature of frit.1 tbl
Ceramic pigment // 2611638
FIELD: chemistry.SUBSTANCE: ceramic pigment contains the following components, wt %: CoO 14.0-16.0; Cr2O3 20.0-25.0; ZnO 3.0-5.2; B2O3 57.0-58.8. Pigment colour is blue and green.EFFECT: lower fusion temperature of pigment.1 tbl
Dental restoration material, method for production thereof and glass ceramic // 2611394
FIELD: manufacturing technology; chemistry.SUBSTANCE: group of inventions relates to glass-ceramic materials for making dental restoration material, a method of producing said material, as well as to dental restoration material. According to a method for making dental restoration material, containing glass ceramic based on lithium silicate, amorphous glass of following composition, in wt%: SiO2 55–70, Li2O 17–20, ZrO2 8–20, Al2O3 0–8 %, K2O 0–8 % and additives 0–15 %, is subjected to at least one thermal treatment, which is a two-step treatment with first temperature of 600 to 800 °C, and second temperature of 780 to 900 °C, to produce tooth-coloured glass ceramics, transmitting light with wavelength of 360 nm to 740 nm (according to measurement in accordance with DIN EN 410 on a Minolta CM-3610d spectrometer), with strength of at least 250 MPa (measured in accordance with DIN ISO 6872), and having colour of tooth, wherein during said at least a single thermal treatment there is at least partial crystallisation owing to high temperatures. Said glass-ceramic is used to produce dental restoration material by a material removal process, selected from a group consisting of cutting, grinding and laser ablation, and before dental application, dental restoration material is subjected to final processing, which is polishing, glazing, sealing, coating and lining with facing ceramic or glaze, wherein strength of dental restoration material is at least 250 MPa (measured in accordance with DIN ISO 6872). Also disclosed is a dental restoration material produced by said method, and tooth-coloured glass ceramics for making dental restoration material, which transmits light with wavelength of 360 nm to 740 nm (according to measurement in accordance with DIN EN 410 on a Minolta CM-3610d spectrometer), having strength of at least 250 MPa (measured in accordance with DIN ISO 6872) and having following composition, wt%: SiO2 55–70, Li2O 17–20, ZrO2 8–20, Al2O3 0–8 %, K2O 0–8 % and additives 0–15 %.EFFECT: use of group of inventions enables to obtain dental restoration material, having high strength and chemical resistance, which is machinable.12 cl, 3 tbl, 2 ex
Low-emissivity coated glass // 2611101
FIELD: manufacturing technology.SUBSTANCE: present invention relates to sun-protective glass and is a double-glass unit, having glass with a low-emissivity coating, applied by sputtering in vacuum. Coating of base plate of glass contains following layers: zinc-tin suboxide with thickness 20–40 nm, silicon nitride/silicon oxynitride with thickness of 5–15 nm, chrome thickness 1–4 nm, silver with thickness of 12–18 nm, silicon nitride/silicon oxynitride with thickness of 45–65 nm.EFFECT: glass has low emissivity and can be tempered.15 cl, 4 ex, 13 tbl, 1 dwg

ethod to produce foamed granules // 2611093
FIELD: technological processes.SUBSTANCE: invention relates to manufacturing of foamed granules. Method to produce foamed granules includes shaping of raw granulated material from charge containing a foaming agent, a glass forming element and/or glass, heating of raw granulated material in a rising flow of smoke gases in the heating zone of the vertical furnace to temperature providing foaming, with subsequent cooling of foamed granules. Raw granulated material is foamed in suspended layer. Quantity of raw granulated material fed to the furnace is defined according to the following formula: G≤38⋅ρ⋅S⋅(Vs.g-Vr.g), kg/hr, where ρ - apparent density of raw granulated material, kg/m3, S - cross section of furnace heating zone, m2; Vs.g - velocity of smoke gases in the furnace heating zone, m/sec.EFFECT: invention simplifies method of foamed granules production, increases efficiency of the process and quality of the finished product.5 cl, 3 dwg
ethod of glass surface decorative metallization // 2611058
FIELD: technological processes.SUBSTANCE: invention relates to methods of coating a glass back surface with metallic materials by means of laser radiation, in particular, with the help of a laser beam transfer through a glass, which is the processed article. Metallic image on the back side of a transparent for a laser beam sheet window glass composition SiO2 – 71.8 %, Na2O – 14.8 %, CaO – 6.7 %, MgO – 4.1 %, Al2O3 – 2 %, SiO3 – 0.5 %, Fe2O3 – 0.1 % as the result of the metal evaporation is formed in two passages of a pulse ytterbium fibre laser beam with the wavelength of 1.06 mcm. Herewith a metallic substrate of the evaporated from its surface metal is pressed mechanically on the back side of the sheet glass, and surfaces of the glass and the metallic substrate are preliminarily cleaned, the metallic substrate surface is smoothed and ground in order to improve the mutual fit.EFFECT: formation on the back surface of a sheet glass transparent for a laser beam of a decorative image from a thin metal film formed by the laser beam evaporation of metal being in direct contact with the back surface of the glass.1 cl, 4 dwg
Glass manufacturing furnace with barbotage of glass mass layer // 2610943
FIELD: chemistry.SUBSTANCE: glass manufacturing furnace with barbotage of glass mass layer contains a body which consists of a melting chamber with rectangular cross-section with tuyeres located on its side walls in the lower part and of three chambers: clarification and cooling chamber, forehearth, cooling and primary purification chamber of exhaust gases. The clarification and cooling chamber is located under the melting chamber, and the forehearth adjoins to end wall of the melting chamber and is equipped with a glass mass output unit. The cooling and primary purification chamber of exhaust gases is located above the melting chamber and is equipped with charging device installed in its end wall for loading large-sized fractions of blend to the melting chamber. The above device is equipped with an inclined gravity slide made in the form of metal construction, which is subject to forced cooling, with fireproof layer on the operating side. The walls of the melting chamber, cooling and primary purification chamber of exhaust gases are caissoned with forced cooling and fireproof protective layer on the operating side, the walls of the clarification chamber and forehearth are fireproof. Metal tube caissons of the cooling and primary purification chamber of exhaust gases forming its ceiling and end wall, turned to the opposite end of the melting chamber are united in a radiation air heater, the input collector of which is connected with an air supply device and the output collector is connected to air pipes of mixers of fuel combustion chambers. Each of the tuyere, which is intended for supply of fuel combustion products and dust-like blend fraction to glass mass layer is connected with a respective fuel combustion chamber installed outside the melting chamber. The tuyeres with combustion chambers are located on the opposite side walls of the melting chamber in staggered rows. The clarification and cooling chamber is connected to the forehearth by cross-flow pipe the upper ridge of which is located below the axis of the tuyere row of the melting chamber at a distance of 5 diameters of tuyere output cross-section.EFFECT: increased furnace productivity, enhancement of safety of operation thereof and homogeneity of physical and chemical properties of glass mass at furnace output.2 dwg
ethod for producing abrasion resistant, electroheated, polymeric layered material // 2610774
FIELD: construction.SUBSTANCE: invention relates to multi-layer lightweight impact-resistant glazing details with the usage of polymeric glass; it can be applied in many industries. Multi-layer glass manufacturing method includes assembling a package from the glass sheets, where organic glass is coated in vacuum with metal or semiconductor coverage as the outer layer, as the innermost layer - a poly-carbonate layer, and the glass is joined by autoclave pressing with the help of polyurethane gluing envelope, wherein the inner surface of an organic glass and poly-carbonate before gluing an adhesive layer on the basis of poliviniletilalya not more than 20 mm along the perimeter is applied, wherein the metal coverage area is selected from the indium, tin, aluminum, and silver groups; semiconductor -from the group consisting of copper sulfide, indium oxide and tin oxide.EFFECT: production of multi-layered glass with an improved physical and mechanical features.1 tbl, 4 ex
ethod of producing stable to melting glass-fibre product and corresponding device // 2610743
FIELD: technological processes.SUBSTANCE: invention relates to methods of producing improved fibre-glass products, namely, to a method of producing a stable to melting or another heat-resistant glass-fibre product, and to a relating device. Proposed is a method of producing a stable to melting glass-fibre product by application of an insulating material onto a glass-fibre product consisting of thread-like glass fibers so, that in fact to cover with the said material each of the thread-like glass fibres. In one aspect the method involves obtaining a moistened mixture containing filamentary glass fibers and an insulating material containing a fire-retarding solution, herewith the solid phase contained in the fire-retardant solution is in fact uniformly and fully distributed throughout the entire moistened mixture.EFFECT: technical result is improvement of heat resistance of the glass-fibre product.36 cl, 2 dwg
Glass // 2610742
FIELD: chemistry.SUBSTANCE: glass contains the following in wt %: SiO2 48.0-51.9; Al2O3 12.0-14.5; Fe2O3 4.0-5.5; CaO 14.5-15.5; MgO 0.5-1.0; Cr2O3 2.0-3.5; Na2O 4.7-6.0; B2O3 3.5-5.4; P2O5 0.1-0.3; MnO 1.5-3.0; BeO 1.1-1.4.EFFECT: high heat resistance.1 tbl
Enamel // 2610741
FIELD: chemistry.SUBSTANCE: enamel consists of the following components with the given percentage mass ratios: %: SiO2 66.0-67.0; B2O3 5.9-6.4; ZrO2 11.0-12.0; CaO 1.0-1.8; Na2O 2.5-3.2; K2O 1.0-1.8; Cr2O3 0.5-0.8; Co2O3 0.3-0.8; 3Al2O3⋅2SiO2 2.0-3.0; MoO3 6.2-6.7.EFFECT: high heat resistance of enamel.1 tbl

Furnace for foaming granules // 2610615
FIELD: technological processes.SUBSTANCE: invention relates to production of foamed granules, which may be used in drilling works, in construction, paint and varnish and other industries. Furnace for foaming granules comprises a burner and a device for input of raw granulated material. Furnace is installed vertically and is functionally divided into a zone for pre-heating of raw granulated material, a foaming zone in suspended condition and a cooling zone of foamed granules in suspended condition. Burner is installed in the lower part of the furnace, the device for input of raw granulated material is placed as capable of feeding raw granulated material to the zone of furnace pre-heating. Furnace walls in the foaming zone are equipped with a cooling system.EFFECT: invention simplifies process of foamed granules production, increases efficiency of the process and quality of the finished product.4 cl, 1 dwg
Fibre-optic guides polyimide coating and preparation method thereof // 2610503
FIELD: lighting.SUBSTANCE: invention relates to fibre-optic guides novel heat-resistant soluble polyimide coatings and their production method. Produced coatings are characterized by satisfactory adhesion to fibre both in presence of keying agent, and without it. In disclosed method coating is formed from solution of ready homo- or copolyimide of specified structural formula. Method of coating making involves light guide drawing from workpiece, its drawing through spinneret, containing polyimide solution and solvent removing with heating, wherein polyimide is used in form of solution with viscosity of 2,400–18,000 MPa×s, and solvent is removed by heating in furnace at 50–350 °C. As polyimides solvents aprotic solvents are used. Proposed method, which uses polyimide, rather than its precursor (corresponding polyamide acid), enables avoiding stage of polyamide acid high-temperature cyclization to polyimide and need for polymer solution multiple application on light guide, which provides reducing time and power inputs for manufacturing of soluble heat-resistant coating.EFFECT: coating can be easily removed using corresponding solvent.4 cl, 1 tbl, 5 dwg, 15 ex

Coated glasses with low surface resistance, smooth surface and/or low thermal emissivity factor // 2610044
FIELD: glass.SUBSTANCE: invention relates to glass sheet with electrically conductive film. Electrically conductive film has surface resistance in range of 9.5–14.0 Ohm/square, emissivity factor in range from 0.14 to 0.17 and absorption factor of more than 1.5 x 103 cm-1 in wavelength range of 400–1,100 nm, surface roughness mean square value of less than 15 nm. Electrically conductive film is made based on doped tin oxide. Dopant is fluorine and codopant is selected from group of phosphorus, boron and phosphorus and boron mixtures.EFFECT: technical result of invention is reduction of surface resistance with rated increase in thickness of layer, reduction of surface coating roughness and/or reduction of coating thermal emissivity factor.20 cl, 11 dwg, 2 tbl
Glass // 2610036
FIELD: chemistry.SUBSTANCE: invention relates to silicate technology, namely to production of glass, which may be used for manufacture of utility, decorative, and household glassware. The glass comprising as follows, wt %: SiO2 71.0-73.0; Al2O3 3.9-5.5; MgO 2.0-2.5; CaO 5.3-6.5; B2O3 2.5-4.0; K2O 9.9-11.2; TiO2 0.5-0.8; Cr2O3 0.5-0.8; CoO 6.1-0.3.EFFECT: new high temperature resistance glass.1 tbl

Process line for production of granular foamed glass // 2609783
FIELD: technological processes.SUBSTANCE: invention relates to production of granular foamed glass. Process line for production of granular foamed glass a raw material hopper, grinder, liquid component hopper, granulators, drum dryer, vibration screen, hopper with a dried granule dispenser, hopper with separation medium, rotary foaming furnace, rotary cooler, installed after foaming furnace, hopper for accumulating foamed granules, finished product storage. Finished product storage comprises two serially installed vibration screens, each of which is equipped with two screens and connected through granule collectors and by pneumatic conveyors with finished product hoppers.EFFECT: improved cleaning of granules.1 cl, 2 dwg
Glaze // 2609501
FIELD: chemistry.SUBSTANCE: glaze contains, wt. %: SiO2 40.0-50.2; Al2O3 10.0-13.0; B2O3 16.5-23.0; ZnO 4.5-7.3; Na2O 3.0-5.0; ZrO2 4.2-8.5; SrO 2.5-5.0; BeO 1.0-2.0; SnO2 1.0-2.0.EFFECT: increased frost resistance of glaze.1 tbl
Ceramic pigment // 2609499
FIELD: chemistry.SUBSTANCE: ceramic pigment contains, wt %: SiO2 52.0-57.0; CoO 5.0-8/0; MgO 15.0-20.0; P2O5 1.5-2.5; Na2O 0.5-1.4; Fe2O3 0.8-1.5; Mn2O3 15.5-19.1.EFFECT: simplified technology for pigment production.1 tbl
Cut glass // 2609498
FIELD: chemistry.SUBSTANCE: cut glass contains, wt. %: SiO2 43.0-48.0; CaO 10.0-15.0; Na2O 3.0-5.0; K2O 15.0-17.0; CeO2 6.0-8.0; TiO2 8.0-12.0; ZnO 3.8-5.5; Sb2O3 0.2-0.5.EFFECT: increased refractive index.1 tbl
Glass // 2609495
FIELD: chemistry.SUBSTANCE: invention refers to the production of high-melting glasses which may be used in the manufacture of thermal units. Glass contains, wt.%: SiO2 39.0-45.0; Al2O3 13.0-14.0; V2O5 18.0-20.0; B2O3 10.0-12.0; CaO 2.0-6.0; WO3 9.0-11.0.EFFECT: increased initial softening temperature of glass.1 tbl

Coated article with low-emissivity coating having barrier layer system(s) including multiple dielectric layers, and/or methods of making same // 2609269
FIELD: chemistry.SUBSTANCE: invention relates to articles with coatings with low emissivity. Multi-layer thin-film coating, applied on a glass substrate, comprises following layers with distance from substrate: silicon-based first layer; first dielectric layer; second dielectric layer, separated by a third dielectric layer, so as to form first and second parts of second dielectric layer; metal layer; top contact layer, consisting of Ni and/or Cr oxide; fourth dielectric layer; silicon-based second layer. Third dielectric layer is based on titanium oxide, or tin oxide.EFFECT: technical result is higher mechanical strength, corrosion resistance and heat resistance of coated article.26 cl, 4 tbl, 3 dwg

Irradiating device for generating ultraviolet radiation and method for its manufacture // 2609034
FIELD: physics.SUBSTANCE: invention relates to irradiation device for the ultraviolet radiation generation. Irradiating device for generating ultraviolet radiation is used in particular in food processing or in water treatment. Device comprises an ultraviolet irradiator having the irradiator tube made of quartz glass, or surrounded by a cylindrical protective tube made of quartz glass ultraviolet irradiator having the irradiator tube made of quartz glass. Irradiator tube and/or protective tube is coated with dirt and water repellent coating in the form of alcohol dispersion containing nanoparticles of titanium dioxide and from 20 vol. % to 60 vol. % of ethanol.EFFECT: technical result of the invention is to increase the lifetime of the irradiating device.9 cl, 2 dwg, 3 tbl

Glass with optically transparent protective coating and method of its production // 2608858
FIELD: optical system; manufacturing technology.SUBSTANCE: invention relates to glass with optically transparent coating and method of its production and can be used in production of optical elements of spacecraft. Glass with optically transparent protective coating has substrate of optically transparent glass and applied on substrate two-layer transparent coating. Coating consists of two layers, lower layer is nano-metal with thickness from 20 to 40 nm, upper ceramic layer is made of aluminium nitride and silicon nitride with thickness from 5 to 15 mcm with nanocrystalline or amorphous nano-crystalline or amorphous structure. Method consists of three stages: 1) bombardment of substrate surface with pulse-periodic high-energy beams of ions of coating lower layer metal, 2) unipolar pulse magnetron deposition of lower nanocrystalline metal layer, 3) bipolar pulse magnetron deposition of upper double-phase ceramic layer, carried out in single vacuum cycle.EFFECT: technical result consists in production of glass with high resistance to impact effect of high-speed solid particles.11 cl, 8 dwg, 3 ex, 2 tbl
ethod of installing ion source relative to processed component // 2608382
FIELD: physics.SUBSTANCE: invention relates to ion-beam treatment of large-size optical components. Method comprises, in an ion source, determining a control point and placing a probe with a sensor in it. On treated part, control points are selected along its perimeter. Probe is brought to contact with surface of component at control points and probe is triggered, coordinates of component relative to coordinates of probe with a sensor are measured, distance of which relative to ion source is known and always constant. Moments of contact between probe and component are controlled by a web-camera with illumination, installed on carriage of ion source.EFFECT: technical result is high accuracy of processing surfaces of components.1 cl
Batch composition and method of producing foamed glass // 2608095
FIELD: glass.SUBSTANCE: invention relates to method of producing foamed glass. Batch for production of foamed glass contains following components, wt%: finely ground scrap glass 43–45; amorphous silicic rock 23–25; sodium hydroxide 11–13; aluminosilicate rock 4–6; water 13–17. Batch is stirred in intensive mixer, water is added in process of mixing to form sodium silicate hydrate with silica modulus 2.2–2.4 and batch is granulated. Granules are powdered with in moisture containing material loaded into metal molds with closed volume and subjected to foaming in furnace at temperature of 760–780 °C for 0.5–1 hour obtaining foamed glass, which is then cooled.EFFECT: technical result is expansion of raw material base, simple technique, low foaming temperature, increased water resistance of foamed glass.2 cl, 2 ex
ethod of vacuum moulding and device for its implementation // 2607841
FIELD: glass.SUBSTANCE: invention relates to production of articles from glass with an irregular curved surface. Glass workpiece is placed in the heating chamber above the mould of the produced article. Workpiece is heated to the glass deformation temperature and bent by creating vacuum in the mould. Mould is made from a heat-resistant gas-permeable composite material based on gypsum, herewith the mould is placed in the heating chamber in a molding frame connected to the vacuum system.EFFECT: technical result is simplified method and device, broader technical capabilities to make articles with a complex surface relief including relief elements with negative angles.3 cl, 5 dwg

ethod of producing primary preform for optical fibres, primary preform, final preform, optical fibre // 2607566
FIELD: manufacturing technology.SUBSTANCE: invention relates to production of optical glass fiber primary preform. Method of primary blank producing consists in using internal plasma-chemical deposition from vapor phase, wherein doped or non-doped glass-forming precursors are supplied to hollow glass base tube inner side, reaction zone in form of plasma is moved back and forth along said hollow glass base tube length between turning point near supply side and turning point near outlet side of hollow base tube, wherein base tube is installed in furnace and such conditions are created in said reaction zone, that one or more of glass layers packets composed of at least two separate glass layers are deposited on said base tube inner side.EFFECT: technical result consists in preparing primary workpieces having large used length, effect on optical narrowing can be made independently from geometric contraction, refraction index and/or cross section area can be accurately set depending on primary blank position in longitudinal direction.17 cl, 12 dwg

Glass-melting crucibles containing terminal ledges with recesses // 2607559
FIELD: glass.SUBSTANCE: invention relates to equipment for production of glass fibre. Glass-melting crucible (2) containing terminal ledges for heating of spinneret holder and walls, attached to opposite end walls (2A) of the crucible, each terminal ledge comprises electrically conductive plate (1) having the first outer edge (1D), attached to the first end wall (2A) of the vessel and extending from said end wall to the second free outer edge (1A), made with possibility of connection to power supply (5, 6), said plate has recess (3) containing: (a) a first open end (3A), width WA, located on the second free edge (1A) of the plate; (b) elongated section (3B) passing in direction of the first outer edge (1D), width WB, and (b) of the second closed end (3C) separated from the first outer edge (1D) of the terminal ledge, of a curved shape, note that curvature, 1/(2R), at any point of curved second end (3C) of the recess is less than the value 1/W0 reciprocal to minimum gap width W0, the first open end (3A), WA, and elongated section (3B), WB, where R is radius of curvature of curved second end (3C) in any point.EFFECT: technical result consists in reduction of rise of internal stresses inside the projection of a terminal, subjected to temperature drop with providing higher freedom of design to reduce cooling of end walls.8 cl, 4 dwg
Lithium silicate glass ceramics and glass with hexavalent metal oxide // 2607557
FIELD: ceramic industry.SUBSTANCE: invention relates to lithium silicate glass ceramic and glass, which are crystallized at low temperatures and are especially suitable as dental materials, in particular, for dental restoration. Lithium silicate glass ceramics contains hexavalent metal oxide, selected from MoO3, WO3 and mixtures thereof, in amount of 0.1–8.4 wt%, from 12.0 to 20.0 wt% of Li2O and wherein including from 0 to less than 0.5 wt% of K2O. For production of glass ceramics with lithium disilicate as main crystalline phase initial glass with germs is subjected to thermal treatment at temperature of 520–750 °C.EFFECT: technical result of invention is production of glass ceramic with improved mechanical and optical properties.22 cl, 1 tbl, 9 ex
Initial composition for glass fibres producing and glass fibre obtained from it // 2607331
FIELD: glass.SUBSTANCE: invention relates to glass compositions for producing high-modulus and high-strength glass fibres. Initial composition for glass fibre producing contains following components, wt%: from approximately 60.5 to approximately 70.5 of SiO2; from approximately 10 to approximately 24.5 of Al2O3; from approximately 11.96 to approximately 20 of alkali-earth metal oxide, from 0 to approximately 3 of alkali metals oxides. Said alkali-earth metal oxide denotes sum of MgO, CaO, SrO and BaO, where amount of MgO in said alkali-earth metal oxide makes at least 5 wt% of mentioned initial composition and amount of CaO in said alkali-earth metal oxide is less than 6.96 wt% of mentioned initial composition.EFFECT: technical result consists in reduction of fiberization temperature, increase of difference between liquidus temperature and fiberization temperature, which leads to fiber higher elasticity and helps to prevent glass devitrification.20 cl, 8 tbl
Lithium silicate glass ceramics and glass with monovalent metal oxide // 2606999
FIELD: chemistry.SUBSTANCE: invention relates to lithium silicate glass ceramics and glass for use in dentistry. Lithium silicate glass ceramic contains a monovalent metal oxide selected from Rb2O, Cs2O and mixtures thereof, from 0 to less than 5.1 wt% Al2O3 and from 0 to less than 1.0 wt% K2O.EFFECT: reduced temperature of crystallisation.24 cl, 1 tbl
Ceramic pigment // 2606888
FIELD: ceramic industry.SUBSTANCE: invention relates to compositions of ceramic pigments. Ceramic pigment contains, wt%: SiO2 32.0–40.0; Al2O3 25.0–30.0; Fe2O3 6.0–8.0; CaO 3.0–4.0; K2O 1.0–1.6; Cr2O3 12.0–16.0; TiO2 1.0–2.0; ZrO2 6.4–9.0; Pr2O3 1.0–2.0.EFFECT: technical result is simplification of technology of preparing pigment.1 cl, 1 tbl
Formaldehyde-free binder composition for mineral fibres // 2606615
FIELD: chemistry.SUBSTANCE: invention relates to formaldehyde-free aqueous binding composition for mineral fibres. Composition contains at least one monosaccharide, ammonium sulphamate or sulphamate of alkali or alkali-earth metal in amount from 1 to 10 wt% and ammonium hydroxide and/or organic ammonium salt.EFFECT: composition provides an advantage in form of a short time of polymerisation during production of fibrous mineral material, ensuring thermal and mechanical stability of said material.17 cl, 2 tbl, 2 ex
 
2551341.
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