130results about How to "Improve air tightness" patented technology

Vacuum glass sealing method and product thereof

ActiveCN102452801AFirmly connectedImprove air tightnessGlass manufactureThermal shock
The invention discloses a vacuum glass sealing method which comprises the following steps: preparing a metal layer, which is bonded with a glass plate, on the surface of the glass plate by an ultrasonic welding technique; and carrying out hermetic seal on the edges of the two glass plates by a metal brazing technique, or carrying out hermetic welding on the metal layers of the two glass plates to be sealed so as to connect the metal seal sheets, thereby implementing hermetic seal on the edges of the two glass plates. The ultrasonic welding technique is utilized to arrange the metal layer on the surface of the glass plate, and the welding technique is utilized to carry out hermetic seal on the edges of the two glass plates on the basis of the metal layer, thereby providing a new technical way for manufacturing vacuum glass. The tempered vacuum glass manufactured by the method disclosed by the invention has the advantages of firm connection of the seal position, high air tightness, favorable thermal shock resistance and the like; and the seal structure formed by the metal seal sheets can well adapt to the temperature deformation of the inner and outer glass plates in the vacuum glass due to temperature difference, thereby providing technical guarantee for safe application of the vacuum glass.

Method for manufacturing square-filament optical fiber panel

InactiveCN103529512AImprove air tightnessExtended service lifeBundled fibre light guideEngineeringSurface plate
The invention discloses a method for manufacturing a square-filament optical fiber panel. The method comprises the following steps: 1, sleeving a cladding pipe into a core material bar to form a bar and pipe combination, and drawing the bar and pipe combination into monofilaments with unfilled corners; 2, arranging the monofilaments in a primary multi-filament die with a square cross section, aligning the unfilled corners of every four monofilaments together to form a cavity for accommodating light absorbing filaments during arrangement, inserting the light absorbing filaments in the cavity to form a primary multi-filament bar; drawing the primary multi-filament bar to form primary multi-filaments; 3, arranging the primary multi-filaments in a secondary multi-filament die with a square cross section to form a secondary multi-filament bar; drawing the secondary multi-filament bar to form secondary multi-filaments; 4, cutting the secondary multi-filaments short and arranging the short secondary multi-filaments into an optical fiber panel blank; making the optical fiber panel blank into the square-filament optical fiber panel through subsequent processing. The optical fiber panel product is formed through the arrangement of the filaments in square units, the square unit filaments are arranged in the most tightly piled mode, and no clearances exist in the square unit filaments at all. The air tightness can be greatly improved, so that the service life of a low light lever imager is prolonged.

Fixture for abrasive flow polishing of blisk

The invention provides a fixture for abrasive flow polishing of a blisk. The fixture consists of an upper disc tray, a lower disk tray, an outer wheel hub sealing ring, an inner wheel hub sealing ring, front blade edge sealing gaskets and rear blade edge sealing gaskets, wherein the upper disc tray and the lower disk tray consist of inner and outer concentric rotating bodies, sealing gasket bases are fixed in the disc trays and are in one-to-one correspondence with blades, and the front blade edge sealing gaskets and the rear blade edge sealing gaskets are fixed in the sealing gasket bases; and the outer wheel hub sealing ring and the inner wheel hub sealing ring fill gaps between the upper and lower disk trays and inner and outer wheel hubs of the blisk to be polished. According to the invention, the flow of abrasive materials is correctly guided, the abrasive materials are prevented from damaging the front and rear edge profiles of the blades during an abrasive polishing process, the blisk is prevented from deforming due to excessive stress caused by the factor that upper and lower cylinders pushes a piston at high pressure to extrude the abrasive materials during a blisk polishing process, the air impermeability of the fixture is improved, and work environment pollution caused by abrasive material leakage and possible physical injury accidents are prevented.

Aluminium/resin composite exhibiting excellent weather resistance and manufacturing method for the same

Disclosed is an aluminium/resin composite which: exhibits extremely high interfacial adhesion strength and air tightness between an integrally-bonded, shaped aluminium article made from an aluminium alloy, and a molded resin article; retains the excellent adhesion strength and air tightness of the aluminium/resin bond surface in harsh environments such as those caused by temperature, humidity, dust, and corrosive materials; and is corrosion resistant, heat resistant, weather resistant, durable, and exhibits excellent peel strength on the aluminium/resin interfacial surface. Also disclosed is a manufacturing method for the aluminium/resin composite. The aluminium/resin composite contains a shaped aluminium article having undulations on the surface, and a molded resin article which is bonded to the shaped aluminium article when the resin is butted thereto. A plurality of concave sections are formed due to the undulations, and an aluminium coating film is formed on the outermost surface of the undulations. Fitting sections are formed on the molded resin article where the resin enters the concave sections and hardens. The components of the aluminium/resin composite which exhibits excellent weather resistance are engaged by the concave sections and the fitting sections.

Welding process for high damping copper alloy and steel

The invention relates to a welding procedure between high-damp copper alloy and steel, belonging to the metal material welding field. The procedure adopts the method of argon tungsten-arc welding; a K-shaped or an X-shaped groove is arranged on the welding surface of the high-damp copper alloy and the steel, namely the K-shaped groove is arranged on the connecting surface of either the high-damp copper alloy or the structural steel, or the K-shaped groove is arranged on the connecting surfaces of both the high-damp copper alloy and the structural steel; firstly adopt nickel bare welding filter metal to perform surfacing welding on the structural steel to form a transition layer; and then adopt cupronickel welding wire to perform butt welding on the high-damp copper alloy to realized the connection between the steel and the high-damp copper alloy. The welding procedure has the advantages that the welding problem between the high-damp copper alloy and the steel can be solved with high efficiency and low cost; the mechanical property of the weld joint of the finished welding part is excellent; the invention can be applied on the power transmission system; under the work conditions of low torque and high rotational speed or high torque and low rotational speed, the welding procedure can meet the application requirements; and compared with the original simulating steel part, the noise reduction performance is good.

Standard lid group used for batteries and capacitors

ActiveCN101286551AHigh strength andImprove air tightnessFixed capacitor housing/encapsulationCasings/cabinets/drawers detailsCapacitanceEngineering
The invention relates to a standard cover group used for a battery or a capacitance, which includes a cover body and an electrode, furthermore, the electrode and the cover body are sealed and connected by glass insulation; the cover body comprises a cylindrical cover core and a broad shoulder which is coaxial with the cover core, the broad shoulder and an upper end surface of the cover core are the same whole, and a ring-shaped flange is arranged below the edge of the broad shoulder. The standard cover group which realizes the invention can be pressure-welded with various batteries or capacitances with different sizes by resistance welding to form an integral cover group, thus meeting the requirement that the cover plates of the batteries or capacitances with different specifications can be satisfied by using only one standard cove group; furthermore, as the standard cover group has comparatively large thickness, deformation and warpage phenomena can not be generated by high-temperature sintering, and as the cove plate needs not to go though high temperature, planeness can be kept during stamping, steam leakage of the cover group cannot be caused by the warpage during welding and sealing, thus the cover group has the advantages of higher strength and air tightness; as the diameter of the standard cover group is small, sintering fixtures can be universally used, furthermore, the standard cover group occupies small space, has high efficiency and low energy-consumption, and can effectively reduce the cost.

Wafer-level package structure and package process applied to acoustic surface wave filter

The invention discloses a wafer-level package structure and package process applied to an acoustic surface wave filter. The wafer-level package structure comprises a filter chip substrate and a package wafer; a circle of gold film is plated on the periphery of a working face of the filter chip substrate, and a circle of gold film is respectively plated on the position, corresponding to each chip substrate gold film, of the package wafer; the filter chip and the package wafer are combined together through a gold-gold binding way; an external circuit wiring structure and a metal solder ball electrically connected with a PCB board are arranged on the surface, reverse to the chip working face, of the packaging wafer; a through hole is formed in the package wafer to enable the chip working facecircuit to electrically connect with the metal solder ball after passing through the through hole and the external circuit wiring structure in order. The package wafer is the glass material with thethermal expansion coefficient same or approximate to that of the chip substrate material. The package disclosed by the invention is more reliable, capable of improving the efficiency and easy to eliminate the thermal mismatch condition of the device.

High-pressure respirator fully-wrapped composite gas cylinder with carbon fiber reinforced aluminum inner container for fire fighting

PendingCN107246548AImprove air tightnessVessel wallsPressure vesselsBurst pressureLacquer
The invention discloses a high-pressure respirator fully-wrapped composite gas cylinder with a carbon fiber reinforced aluminum inner container for fire fighting. The high-pressure respirator fully-wrapped composite gas cylinder comprises the aluminum inner container, wherein the aluminum inner container comprises an aluminum inner container bottle bottom, an aluminum inner container barrel body, an aluminum inner container bottle shoulder and an aluminum inner container bottleneck; a carbon fiber fully-wrapped layer on the aluminum inner container barrel body is formed by alternatively winding a longitudinal carbon fiber wrapping layer and an annular carbon fiber wrapping layer according to a stacking sequence; an anti-impact glass fiber protective layer is further wrapped on the surface of the carbon fiber fully-wrapped layer; and a layer of polyurethane lacquer is coated on the outer surface of the aluminum inner container as an electrocorrosion resistant coating. The high-pressure respirator fully-wrapped composite gas cylinder meets reasonable stress field distribution and is ensured to be capable of bearing maximal bursting pressure in case of using least fibers, so that the bursting position starts from the aluminum inner container barrel body of the composite gas cylinder, and therefore, the composite gas cylinder is guaranteed to have lasting and good airtight performances, and optimal safety performances.

Rubber lining material of corrosion-resistant rubber lining butterfly valve and production method thereof

The invention discloses a rubber lining material of a corrosion-resistant rubber lining butterfly valve, the rubber lining material is formed by mixing rubber lining materials A and rubber lining materials B, wherein the two parts respectively comprise raw materials in part by weight as follows: the rubber lining materials A: 85-95 of nitrile rubber 3305, 0.3-0.5 of sulphur, 4-6 of magnesium oxide, 3-4 stearic acid, 2 of antioxidant, 1-2 of 2,5-Di-tert-butylhydroquinone (DTBHQ), 1-2 of antiager RD, 1-2 of antiager 4010 NA, 3-4 of paraffin, 22-25 of quick extrusion black carbon N660, 62-65 of high abrasion furnace black N330, 18-22 of dioctyl phthalate, 25-35 of calcium carbonate, 3-4 of accelerant M, 1-2 of accelerant tetramethylthiuram disulfide (TMTD) and 1-2 accelerant Tetraethylthiuram disulfide (TETD); and the rubber lining materials B: 82-87 of chloropropylene epoxide homopolymer, 12-18 of epichlorohydrin copolymer, 1-2 of zinc stearate, 1-3 of antiager RD, 0.4-0.6 of gum easy T-78, 1-2 of Rhein paraffin, 45-55 of quick extrusion black carbon, 10-14 of kieselguhr, 5-8 of dioctyl phthalate, 4-6 of lead tetroxide, 0.8 of vulcanizer TCY and 1-2 of accelerant Na-22. The rubber lining material has good comprehensive performance, the rubber lining butterfly valve which is obtained after vulcanization has the characteristics of good air tightness, weather resistance, low temperature resistance, oil resistance and the like, and simultaneously has low material cost.

Quaternary alloy sealing material

The invention provides a quaternary alloy sealing material, which comprises the components with mass percentages as follows: 65 to 73 percent of Ag, 25 to 30 percent of Cu, 0.5 to 5 percent of Ge and 0.1 to 1.0 percent of Co. The specific preparation manner is as follows: (1) Ag, Cu, Ge and Co are put into a vacuum melting furnace in proportion, the furnace is internally vacuumized to pressure of 0.4 to 0.04Pa and then heated to a temperature of 1200 to 1400 DEG C; (2), after Ag, Cu, Ge and Co are completely melted in the vacuum melting furnace to form melted liquid, the temperature is reduced to 1000 to 1100 DEG C, the melted liquid is poured into a shaping die, and after the temperature is reduced to room temperature, the shaping mould is taken out of the vacuum melting furnace and a cast ingot for processing the sealing material is obtained; and (3) the cast ingot is calendered by using a rolling mill, coiled and put into a vacuum heat treatment furnace after the thickness reaches 1 to 2mm, heated to a temperature of 600 to 700 DEG C, thermally insulated for 2 to 5 hours, then cooled to the normal temperature, and is calendered by the rolling mill to the thickness of 0.3 to i.2mm after being taken out, and the quaternary alloy sealing material can be obtained after the cast ingot is trimmed and punched into a needed shape. The quaternary alloy sealing material has the advantages of high cleanliness, good anti-corrosion performance and good anti-oxidation performance.
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products