50results about How to "Small amount of deflation" patented technology

The invention provides an aircraft supersonic air inlet channel with a variable deflation system. The aircraft supersonic air inlet channel with the variable deflation system comprises a supersonic front body compression surface, an air inlet channel lip cover, an air inlet channel side plate, an inner plate which extends inwards from the supersonic front body compression surface; a deflation chamber, a multi-seam or porous cover plate, a deflation chamber partition plate and flow limiting openings are arranged in the inner plate, wherein the multi-seam or porous cover plate covers the deflation chamber; the deflation chamber partition plate is positioned in the deflation chamber; the flow limiting openings are formed in the lower surface of the deflation chamber; the deflation chamber is partitioned into independent sub-chambers by the deflation chamber partition plate. The size of each sub-chamber, the number of the seams/pores of the multi-seam or porous cover plate corresponding to each sub-chamber and the opening and the closing of the flow limiting openings are adjusted by moving the deflation partition chamber according to the working Mach number and the attitude angle change of the supersonic air inlet channel, so that the deflation characteristics interfered by a lip cover shock wave/boundary layer are adjusted; therefore a good boundary layer control effect can be achieved in a wider work envelope range; the air emission amount is saved; a deflation flow channel in a certain area can even be closed when necessary.

The invention consists of benzotriazole compounds and an electrode comprising at least one of vinyl ethylene carbonate, vinylene carbonate, cyclic sulfonic acid, and cyclic sulfite. It is for use in forming a thin and dens passive film to reduce the gas production rate at process of cell forming, and to decrease corrosion of copper foil and aluminum foil of current collector, and to reduce the impedance of battery.

The invention discloses a structure and a method for packaging an organic electroluminescence component (OLED/PLED). The structure mainly comprises a sealing material of a sealing connection part between the side frame of a basal plate and the side frame of a cover plate of the component, and the sealing material is indium alloy with low melting point. The internal surface of the cover plate is provided with a getter layer, and the sealing connection process of the component is carried out in a high-vacuum environment. The sealing material of the component has an ideal obstruction performanceto vapour and oxygen. After the component is sealed and connected, high vacuum is kept in the internal space of the component. A getter in the component can continuously adsorb gas which is desorbed and released by the internal material of the component, the high vacuum can be maintained in the component for a long time, the damage of the vapour and the oxygen to an organic light-emitting functional layer material in the component is farthest avoided, and the component can reach long service life meeting the requirement of commercial application.

The invention provides a compact type liquid-helium-free 1K low-temperature refrigeration device suitable for ultrahigh vacuum environment. The device comprises a gas conveying pipe, a pre-cooling end, a protection cover, a pressure reduction pool and an air exhaust device. The device has the beneficial effects that firstly, the protection cover reduces the surface area of a refrigeration machine exposed in a vacuum cavity and can be used for the ultrahigh vacuum environment; secondly, the protection cover serves as a backflow channel of refrigeration working media, conductance of the backflow channel is improved, it is ensured that liquid refrigeration working media in the pressure reduction pool have the low vapour pressure, and the lower refrigeration temperature is achieved; thirdly, at the initial cooling stage, the backflow channel can be inflated with helium exchange gas so as to rapidly cool the portion of the pressure reduction pool, and the cooling time is shortened; fourthly, due to design of the second segment of the protection cover, the whole heat exchange efficiency is improved; fifthly, the refrigeration device has the beneficial effects of being compact in structure, easy to demount, mount and maintain, adjustable in refrigeration amount and the like.

The invention discloses a travelling wave tube collector assembly and an assembly process thereof. The travelling wave tube collector assembly comprises a collector inner core and a collector sleeve, the collector inner core is arranged in the collector sleeve, and an insulating ceramic is arranged between the collector inner core and the collector sleeve; the insulating ceramic is made of a molybdenum copper material; and the assembly technology of the travelling wave collector assembly finishes welding process among the insulating ceramic, the travelling wave tube inner core and the travelling wave tube sleeve by using palladium-based brazing filler metal and a way of increasing the height of a solder groove. According to the travelling wave tube collector assembly and the assembly process thereof disclosed by the invention, the assembly quality of the travelling wave tube collector assembly can be ensured and further the product performance of the travelling wave tube can be guaranteed.

The invention discloses a vacuum treatment method for a multi-beam cathode assembly, which comprises the steps of firstly carrying out baking and gas exhausting on the cathode assemble so as to remove water vapor adsorbed to the inner and outer surfaces of a packaging glass tube, then carrying out electrified gas removing on the cathode assembly so as to extract gases and impurities adsorbed on a cathode, carrying out gas removing on an installed anode, applying DC voltage between the cathode and the anode so as to carry out anode gas removing, measuring cathode emission current under different pulse anode high voltages at different powers of a heater assembly, drawing a volt-ampere characteristic curve, and finally carrying out vacuum sealing on the cathode assembly so as to acquire a multi-beam cathode which is low in small in gas discharge amount and stable in emission current. The cathode assembly is high in vacuum treatment quality, an emission surface of the cathode is bright and has no obvious defect, the emission performance of the cathode assembly is good in uniformity, the stability is high, and the preservation period is long, thereby being capable of meeting requirements of travelling wave tube cathode preparation, and having good application prospects.

The invention discloses a once-through isothermal methanol-methanation advanced purification process which ensures that process gas from gas producing working sections is changed, decarbonized, and compressed by a low-pressure cylinder of a synthesis gas compressor, then enters an isothermal methanol-methanation advanced purification device and is sequentially subject to methanolizing and methanation reactions to obtain the process gas with the content of CO plus CO2 less than 10ppmv, and the process gas is fed into the next working section for drying and purifying. The invention is suitable for a synthesis gas advanced purification process for preparing synthetic ammonia by taking coal, natural gas, acetylene tail gas and coal synthetic tail gas and the like as raw materials, enables thepurified gas to meet the requirements of ammonia synthetic catalysts, has the advantages of high purifying efficiency, strong adaptability, simple flow, less investment, low energy consumption, simpleoperation, no pollution and the like, solves the problems existing in the prior synthetic ammonia and synthetic gas advanced purification process and device and ensures that the content of the CO plus CO2 in the synthesis gas is less than 10ppmv. The invention also provides a device for realizing the once-through isothermal methanol-methanation advanced purification process.

The invention discloses a flywheel low-temperature welding vacuum seal device which comprises a flywheel system and a seal system. The flywheel system comprises a stator mandrel, a flywheel rotor and a flywheel base. The seal system comprises a seal ring, a seal cover, a seal strip, a lower welding tin ring and an upper welding tin ring. The seal cover is fastened to the flywheel rotor. The stator mandrel is located on the radial inner side of the flywheel rotor. The lower end of the stator mandrel is fixed on the flywheel base, and the upper end thereof is connected with the seal cover. The flywheel base is connected with the seal cover through the seal ring. The flywheel base is welded with the seal cover by low-temperature welding through the seal strip, the lower welding tin ring and the upper welding tin ring. The flywheel low-temperature welding vacuum seal device is capable of being unsealed for multiple times, good in airtightness, low in gas discharge, simple in structure, reliable in performance, and applicable to vacuum seal protection of attitude control flywheels and energy accumulation flywheels, and a high-vacuum-degree working environment is provided for the flywheel system.

The invention discloses a space travelling wave tube collector component and an assembly method thereof. The space travelling wave tube collector component comprises a collector inner core 3 and a collector outer barrel 1, the collector inner core 3 made of oxygen-free copper materials is arranged in the collector outer barrel 1, and an insulating ceramic 2 is arranged between the collector inner core 3 and the collector outer barrel 1. The space travelling wave tube collector component and the assembly method thereof have the advantages that assembly quality of the space travelling wave tube collector component can be guaranteed, and performances of travelling wave tube products can be further guaranteed.

The invention discloses a grinding technology for an ion implantation technology cavity, and the grinding technology comprises the following steps: carrying out the electrolytic grinding, normal pressure cleaning, first high-pressure cleaning, neutralization treatment, second high-pressure cleaning, steam cleaning, third high-pressure cleaning and drying of the sealing surface of the cavity, wherein the electrolyte solution is a mixture of phosphoric acid with the mass percentage of 60 to 70%, sulfuric acid with the mass percentage of 20 to 30%, and hydrofluoric acid with the mass percentage of 3 to 10%. The roughness of the processed ion implantation technology cavity can reach the range of Ra1.0-2.0, and the surface ripples are reduced, thereby reducing the air discharge and more effectively guaranteeing the vacuum degree of the cavity.

The invention discloses a high-efficiency energy-saving cured carbon felt, and a preparation method thereof. The high-efficiency energy-saving cured carbon felt is prepared from, by weight, 650 to 720parts of soft felt, 30 to 40 parts of a dilluent, 50 to 100 parts of a curing agent, 200 to 300 parts of a resin, and 25 to 35 parts of an inorganic filing material. The preparation method comprisesfollowing steps: 1, felt cutting; 2, rubber preparation; 3, rubber coating; 4, manufacturing and moulding; 5, high temperature oven drying; 6, machining; 7, coating; 8 high temperature calcining; and9, detection. The high-efficiency energy-saving cured carbon felt is low in thermal conductivity, excellent in thermal insulation performance, uniform in density, low in heat storage capacity, quick in degassing, low in outgassing amount in vacuum, possesses heat impact resistance; product pollution or hearth pollution is not caused; furnace body effective space is enlarged; installation and maintenance are convenient; thermal insulation requirements of various monocrystalline growth furnaces and polysilicon ingot furnaces are satisfied. The preparation method is simple, is suitable for largescale industrialized production, and is promising in application prospect.

The invention provides a cobalt-based soft magnetic alloy strip coating and a preparation method thereof. The coating has the advantages of good working performance, small environmental pollution and low cost. The preparation method has the advantages of simple process and low production cost, and is suitable for industrial production. The coating comprises the following components by weight percentage: 20% to 30 % of ethanol, 3% to 5% of dioctyl phthalate, 10% to 13% of polyurethane, 27% to 31% of ferrite titanium dioxide compound, 5% to 8% of propylgallate and polyimide in balancing amount.

The invention discloses a process for preparing sheet trititanium pentoxide by TiC reduction, comprising the following steps: respectively weighing raw materials titanium carbide and titanium dioxideaccording to the mass ratio of titanium carbide to titanium dioxide of 1: (8.5-10), adding water for ball milling and mixing, drying, grinding, sieving, tabletting, then performing staged sintering inan inert atmosphere, and finally cooling to obtain the product. According to the invention, sheet trititanium pentoxide crystals can be prepared, with the purity reaching 99.99%, and the output being86-88%; the sheet trititanium pentoxide crystals can shorten the coating film pre-melting time, and improve the coating efficiency; furthermore, after adopting a physical ball mixing and mixing method, the sheet trititanium pentoxide crystals are directly obtained by calcining in a temperature interval around 1300 DEG C in one step, the temperature is lower than conventional industrial temperature by higher than 500 DEG C, a vacuum environment is not needed, and equipment requirement is low.

The invention discloses a preparation method of a waterborne floating aluminum pigment, comprising the steps of adding flaky oily aluminum silver slurry into a solvent, heating to 40-45 DEG C, and stirring for 30-60 min; taking components A and B, wherein the component A is a mixed solution of water and one of bis(ethylenediamine), ethylenediamine or ammonia, and the component B is one of tetramethyl orthosilicate solution, tetraethoxysilane solution and sodium silicate solution; dropwise adding the components A and B into the mixed slurry; after dropwise adding, holding the temperature for 4-8 h, heating to 60 DEG C, adding calcium chloride solution or aluminum chloride solution, and dropwise adding a coupling agent; adding a surfactant, continuously stirring for 3-4 h, and performing cooling and suction filtering to obtain the waterborne floating aluminum pigment. The preparation method has the advantage that the waterborne floating aluminum pigment has good floating value and has good storage stability.

The invention relates to the technical field of preparation of evaporation-coating materials, in particular to a preparing method of a silica-glass-doped evaporation-coating material. The preparing method of the silica-glass-doped evaporation-coating material comprises the steps of 1, preparation of ingredients; 2, spray granulation of a sizing agent; 3, tabletting forming; 4, preparation of a sintering body; 5, smashing and pulverizing; 6, founding and heap forming; 6, annealing treatment; 8, smashing into particles; 9, cleaning packaging. According to the preparing method, the steps of firstly, smashing the aluminum silicon ceramic sintering body, then firing and annealing the sintering body, and finally smashing the sintering body again are adopted, the density of the obtained aluminumsilicon glass evaporation-coating material is large, and sputtering phenomena cannot occur due to the light weight of the gun when the electronic gun bombards the evaporation-coating material; few pores exist, the air discharge amount in the coating process is reduced, and the quality of the coating layer is improved accordingly; the evaporation angle is consistent, the evaporation speed is uniform and stable, and focusing of the electronic gun is easy; dust falling is unlikely to occur to the coating material, and sputtering points cannot be generated in the coating process; meanwhile, the evaporation-coating material can be applied to plastic lenses in batch, so that the coating operabiity and the quality of the coating layer after coating are both greatly improved.

The invention provides a bridgman-stockbarger growth method for zirconium titanate crystals. The method comprises the following steps: (1) providing a crucible with a pressing block raw material, wherein the pressing block raw material is prepared by matching 5-90% by mass of TiO2 and 10-95% by mass of ZrO2, uniformly mixing and pressing into blocks; (2) putting the crucible into a high temperature dropping furnace, heating and vacuuming till 10<-3>-10<-4>Pa, introducing an inert protecting gas when the temperature of the furnace is 1350-1650 DEG C, and heating to a set temperature within a range of 1800-1950 DEG C; (3) after the temperature of the furnace achieves the set temperature, keeping the temperature for 2-6 hours to sufficiently melt the raw materials, wherein the temperature gradient of solid-liquid boundary of crystal growth is within the range of 15-60 DEG C/cm, and the crucible dropping velocity is within 0.1-6.0mm/h; and (4) after the crystal growth is completed, keeping the temperature for 12-24 hours, cooling to be the room temperature in the speed of 25-65 DEG C/h, and performing annealing treatment on the grown crystal. The invention provides the bridgman-stockbarger growth method which is simple in operation method, low in growth cost and stable in quality for zirconium titanate crystals, and thus industrial preparation of crystals is achieved.

The invention relates to a precoating liquid used to coating fluorescent screen that includes 0%-10% polystyrene latex, 1-10% polyvinyl alcohol, 0.5-10% colloidal silicon dioxide, 0-5% antiseptic and the other is water. The invention is used for making fluorescent screen by organic film. It could decrease mixing color and have fresh color.

The invention discloses a vacuum collector tube, which comprises an elliptical inner glass tube and a circular cover glass tube. The circular bottom of the elliptical inner glass tube is enclosed; the surface of the elliptical inner glass tube is plated with a solar selective absorption coating; the opening end of the elliptical inner glass tube is connected with the opening end of the circular cover glass tube in a sealing way; the circular bottom of the elliptical inner glass tube is provided with a spring support frame which is fixed with the inner wall of the cover glass tube in a tensioning way; a vacuum sandwich is formed between the elliptical inner glass tube and the circular cover glass tube, and the vacuum degree of the sandwich is maintained by a getter. The vacuum collector tube has the advantages of quick temperature rise, high heat exchange efficiency, low consumption of glass materials.

The invention provides a novel high-refractive-index coating mixed material and a production process thereof and relates to the field of optical coating materials. An optical coating material is included; the optical coating material is composed of zirconium oxide, titanium oxide and other additives; the zirconium oxide comprises ZrO2; the titanium oxide comprises TiO2; the additives comprise titanium powder; and the ZrO2 accounts for 50-99.5 wt%, the TiO2 accounts for 0.5-50 wt%, and the metal titanium powder accounts for 0-20 wt%. Manufacturing is completed through burdening, granulation, smelting and split charging, Ti is adopted to replace part of the TiO2 in an original formula, the Ti can capture redundant oxygen in the TiO2 in the material production process, a Ti3O5 structure morestable in vacuum is generated, the Ti3O5 and the ZrO2 are mutually dissolved in the sintering process, and generated Zr-Ti oxide is more stable in vacuum and smaller in gas release amount. Compared with an old product, the novel high-refractive-index coating mixed material has the advantages that the pre-melting time can be remarkably shortened, the production speed can be increased, the materialuse cost can be reduced, meanwhile, the gas release amount is reduced, splashing is reduced, point defects caused by splashing on a thin film can be reduced, and the yield can be increased.

The invention provides a preparation method of rare earth metal. The preparation method comprises the following steps: rare earth salt, ion liquid and hydroxyl ether solvent are mixed to form electrolyte, and the electrolyte is put in an electrolytic bath; the electrolyte is electrolyzed to form the rare earth metal; and the formula of the hydroxyl ether solvent is FORMULA, wherein R1 is any one of hydrogen, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl and tertiary butyl, R2 is any one of methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl and tertiary butyl, and n is 1-10. The method uses the hydroxyl ether solvent as additive, and uses hydroxyl hydrotropy rare earth salt, and the hydroxyl hydrotropy rare earth salt only contains one hydroxyl, so that the gas release quantity is largely reduced, the current is not quickly reduced, and the porosity in products is also largely reduced. The method uses a solid substance as additive to relieve the problems of difficult dissolving and complex steps.