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77results about How to "Meet the requirements of the use environment" patented technology

Heat-resistant stainless steel with high-lasting strength and manufacturing method thereof

The invention discloses a heat-resistant stainless steel with high-lasting strength and a manufacturing method thereof. The heat-resistant stainless steel includes the following components by percentage: 24.00-26.00 of Cr, 17.00-23.00 of Ni, 0.05-0.75 of Si, 0.15-2.00 of Mn, less than or equal to 0.030 of P, less than or equal to 0.030 of S, 0.04-0.10 of C, 0.15-0.35 of N, 0.01-5.00 of RE, and 0.20-0.60 of M, wherein M is Nb and Ta. The manufacturing method comprises the following steps: 1. smelting: smelting molten steel in accordance with component requirements of the stainless steel; 2. pouring billet steel; 3. hot-rolling the billet steel: a. heating, the temperature of a uniform temperature section in a furnace is at the temperature of 1130 DEG C plus or minus 50 DEG C, and the soaking time is 80 minutes plus or minus 10 minutes; and b. rolling or forging, the initial rolling/initial forging temperature is at the temperature of 1100 DEG C plus or minus 50 DEG C, and the finishing rolling/finishing forging temperature is at the temperature of 860 DEG C plus or minus 50 DEG C; and 4. heat treatment, the solid solution temperature is at the temperature of 1175 DEG C plus or minus 75 DEG C, and water quenching after heat preservation. Through deduction by tests after sampling the stainless steel manufactured by the method, manufactured seamless tubes can satisfy the use requirements of superheaters and reheaters of ultra-supercritical power station boilers.
Owner:SHANXI TAIGANG STAINLESS STEEL CO LTD

Method for manufacturing flexible joint of large-length submarine cable

The invention discloses a method for manufacturing a flexible joint of a submarine cable capable of satisfying the requirements of high-voltage and ultrahigh-voltage use situations. The method comprises the steps as follows: 1) conductor connection; 2) conductor shield and vulcanization; 3) insulation extrusion; 4) insulation vulcanization; 5) insulation shield and repair; and 6) metal sheath recovery, wherein the insulation vulcanization process is that an insulated cable is put into a vulcanizing mould, nitrogen gas filled into the vulcanizing mould during the vulcanization cannot leak, cooling water systems at the two ends of the vulcanizing mould are simultaneously kept unblocked, so as to keep the temperature at the two ends of the cable below 70 DEG C; when the temperature reaches 235 to 245 DEG C and the nitrogen gas pressure is 1.5Mpa, insulation vulcanization begins, and the temperature and the pressure are regulated through a valve and a power source; and after the vulcanization is conducted for 120 minutes, the power source is cut off, the temperature is reduced below 100 DEG C while the pressure is kept at1.5Mpa, gas is discharged to release the pressure, and when the pressure is zero, the vulcanizing mould is opened and the cable is taken out. When the cable produced by adopting the manufacturing method disclosed by the invention is used as the submarine cable in high-voltage and ultrahigh-voltage situations, the performance of the cable is excellent and the requirements of the use environments are satisfied.
Owner:HENGTONG SUBMARINE POWER CABLE CO LTD +1

Rubber buffering and vibration isolating elastomer structure

The invention relates to a rubber buffering and vibration isolating elastomer structure which comprises an upper metal part, a rubber part and a lower metal part. An internal cavity structure is adopted by the rubber body of the invention to increase the buffering stroke of the rubber body, and the buffering deformation of the rubber body can reach 100%; and if the space along the axial direction of the elastomer structure is large enough, the buffering deformation can reach about 150%. The design of the cavity structure greatly increases the buffering deformation stroke of the rubber part by 2-4 times of the traditional rubber isolator, thereby greatly improving the buffering effect. The structure of the invention adopts the design of a gas channel; on the one hand, by the design of the gas channel, when the elastomer bears the impact load, because the action time of the load is short, the gas in the cavity is quickly discharged outwards through the gas channel, and the friction action of the gas and the channel increases the damping of the elastomer structure, thereby increasing the buffering effect of the elastomer structure; and on the other hand, by the design of the gas channel, the gas in the cavity can be smoothly discharged under the action of the load to avoid the uneven deformation of the rubber part caused by sealing of the cavity, thereby ensuring the rigidity stability of the elastomer structure in the deformation process.
Owner:AEROSPACE RES INST OF MATERIAL & PROCESSING TECH

Epoxy resin pouring dry type transformer for electric locomotive

The invention discloses an epoxy resin pouring dry type transformer for an electric locomotive. The transformer comprises an iron core which is formed by connecting of a plurality of core limbs which are arranged transversely, a secondary coil and a primary coil are arranged on each core limb from interior to exterior in sequence, and an air flue is formed between each secondary coil and each primary coil. The cross sections of the core limbs, the secondary coils and the primary coils are of a rectangular shape, each air flue comprises a transverse air flue and a longitudinal air flue communicated with the transverse air flue, the width of each transverse air flue is formed by the transverse distance between each secondary coil and each primary coil, the width of each longitudinal air flue is formed by the longitudinal distance between each secondary coil and each primary coil, and the width of each longitudinal air flue is larger than that of each transverse air flue. The epoxy resin pouring dry type transformer is small in size and light in weight, can satisfy impedance requirements, has good waterproof effect, and can sufficiently cope with all kinds of special operating environments encountered in the process of operating of the epoxy resin pouring dry type transformer for the electric locomotive.
Owner:PEARL ELECTRIC

Graphite substrate and manufacture method thereof, LED module and manufacture method thereof

The invention provides a graphite substrate and a manufacture method thereof, an LED module and a manufacture method thereof; the graphite substrate comprises a flexible graphite flake; a metal layer is arranged above the graphite flake; a radiation layer is arranged below the graphite flake; the graphite flake is provided with a plurality of through holes penetrating the top surface and the bottom surface of the graphite flake; the graphite flake is connected with the metal layer through a bonding glue filling the through holes, and the bonding glue directly connects the top surface of the graphite flake with the bottom surface of the metal layer; the graphite flake manufacture method comprises the following steps: arranging the plurality of through holes on the flexible graphite flake, wherein each through hole penetrates the top surface and the bottom surface of the graphite flake; placing a bonding sheet above the graphite flake, placing the metal layer above the bonding sheet, heating the bonding sheet so as to melt the bonding sheet, thus forming the bonding glue filling the through holes; solidifying the bonding glue. The graphite flake directly makes contact with the bonding glue; the heat generated by the LED chip can be fast transferred to the graphite flake, thus realizing fast radiation of the LED module.
Owner:RAYBEN TECH ZHUHAI

Flexible peristaltic pump

The invention provides a flexible peristaltic pump. The flexible peristaltic pump comprises a pump unit, a fixing unit and a connecting unit, wherein the pump unit is of a bag shaped structure manufactured through a driving film, comprising at least one opening channel through which liquid can flow in and out; a film prepared from an intelligent soft material can be externally excited to expand and contract under the eigenstrain so as to generate driving power for the peristaltic pump to pump in and pump out the liquid; the fixing unit is of a rigid structure and used for supporting the pump unit and the connecting unit, wherein the connecting unit is of a flexible structure for connecting the pump unit into a chain so as to ensure the flexibility characteristic of the whole peristaltic pump; an automatic valve is arranged in the connecting unit to control liquid to flow in and out; the fixing unit is used for supporting the pump unit. According to the flexible peristaltic pump, the driving film material and the special structure enable further simplifying of the peristaltic pump structure, so that the stability, reliability, efficiency and economy of the peristaltic pump can be improved, and the working noise can be reduced. The flexible peristaltic pump can be widely applied to the fields of chemical engineering, mining and metallurgy, paper-making, paint coatings, foods, ceramics, petroleum, water treatment, medicine preparation, and medical apparatuses and instruments in the future, and particularly plays an important role in artificial organ.
Owner:ZHEJIANG UNIV

Plastic die steel with high intensity, high toughness and high corrosion resistance and production method thereof

The invention discloses a plastic die steel with high intensity, high toughness and high corrosion resistance. The plastic die steel comprises C, Si, Cr, Mo, Ni, W, V, Mn and the balance Fe and other impurities. The invention further discloses a production method of the plastic die steel with high intensity, high toughness and high corrosion resistance. The method includes the following steps of placing all the components into a non-vacuum induction furnace for primary smelting and then carrying out external refining to obtain consumable electrodes, remelting and refining the consumable electrodes to obtain electroslag ingots, carrying out heating forging or rolling on the electroslag ingots to obtain a primary plastic die steel product, and carrying out spheroidizing annealing thermal treatment and surface treatment on the primary plastic die steel product to obtain the finished plastic die steel product. The plastic die steel with high intensity, high toughness and high corrosion resistance can be produced through the method, the overall properties such as intensity, toughness and corrosion resistance are superior to those of existing plastic die steel #1.2316, and the service environment demands of current medium-and-high end plastic die steel with high intensity and high toughness in China can be met.
Owner:SICHUAN JIANGYOU LIUHE STEAM TURBINE MATERIAL

Pipeline dredging machine

The invention provides a pipeline dredging machine. The pipeline dredging machine comprises a water pipe; a spraying head is connected with a water pipe; the spraying head comprises a shaft part and a spraying head side wall, wherein the shaft part is connected with the water pipe, and the spraying head side wall is arranged out of the shaft part and is provided with a hollow cylindrical shape; a rear spraying hole is formed in the shaft part of the spraying head and is used for pushing the spraying head to move forward; a side spraying hole is formed in the side wall of the spraying head and is used for cleaning, and the axis of the side spraying hole is perpendicular to the axis of the rear spraying hole; and a drilling bit capable of rotating is arranged on the forefront of the spraying head and plays a role in cutting a blocking body. According to the provided pipeline dredging machine, aiming at natural deposition dredging of a buried pipeline of an outdoor railway tunnel, calcium carbonate and silt precipitated by the natural environment can be effectively dredged, the maximum dredging length of the pipeline dredging machine is up to 50 m, and the pipeline dredging machine can pass smoothly at the corners not exceeding 90 degrees; appearance design of the pipe dredging machine conforms to requirements of the tunnel using environment, and stable working of the equipment can be ensured.
Owner:RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI +1

Ultrasonic welding equipment for porous sound attenuation air inlet tube of non-woven fabric helical air filter

The invention relates to ultrasonic welding equipment for a porous sound attenuation air inlet tube of a non-woven fabric helical air filter. The equipment comprises an electric control box, a winding rotating device, a feeding traveling device and a sizing device which are all arranged on a machine frame; the feeding traveling device is connected with a non-woven fabric roll and a nylon yarn roll; the winding rotating device is controlled by the electric control box to rotate; the feeding traveling device is controlled by the electric control box to travel along the direction of the winding rotating device and feeds non-woven fabric strips and nylon yarns into the winding rotating device to rotate and wind the non-woven fabric strips and the nylon yarns from inside to outside; and the sizing device is used for synchronously sizing the non-woven fabric strips wound on the winding rotating device. The non-woven fabric strips and the hard nylon yarns are adopted to be uniformly and slantingly wound on a core rod at intervals and are sized, adhered and formed in a matched mode. The ultrasonic welding equipment has a simple and compact structure, is convenient to operate, and has simple processes and a short forming period. The requirement on a certain rigidity required when an automobile engine and the air filter need to be randomly bent in the abutting process under different assembly working conditions can be met. The ultrasonic welding equipment has a long service life, can be recycled and has no waste pollution.
Owner:JIANGSU XINGCHENXING AUTO ACCESSORIES

Method for manufacturing flexible joint of large-length submarine cable

The invention discloses a method for manufacturing a flexible joint of a submarine cable capable of satisfying the requirements of high-voltage and ultrahigh-voltage use situations. The method comprises the steps as follows: 1) conductor connection; 2) conductor shield and vulcanization; 3) insulation extrusion; 4) insulation vulcanization; 5) insulation shield and repair; and 6) metal sheath recovery, wherein the insulation vulcanization process is that an insulated cable is put into a vulcanizing mould, nitrogen gas filled into the vulcanizing mould during the vulcanization cannot leak, cooling water systems at the two ends of the vulcanizing mould are simultaneously kept unblocked, so as to keep the temperature at the two ends of the cable below 70 DEG C; when the temperature reaches 235 to 245 DEG C and the nitrogen gas pressure is 1.5Mpa, insulation vulcanization begins, and the temperature and the pressure are regulated through a valve and a power source; and after the vulcanization is conducted for 120 minutes, the power source is cut off, the temperature is reduced below 100 DEG C while the pressure is kept at1.5Mpa, gas is discharged to release the pressure, and when the pressure is zero, the vulcanizing mould is opened and the cable is taken out. When the cable produced by adopting the manufacturing method disclosed by the invention is used as the submarine cable in high-voltage and ultrahigh-voltage situations, the performance of the cable is excellent and the requirements of the use environments are satisfied.
Owner:HENGTONG SUBMARINE POWER CABLE CO LTD +1

Molding bed forging method for barrel with side connection pipe seat and die

The invention provides a molding bed forging method for a barrel with a side connection pipe seat and a die and particularly relates to the technical field of forging. A first barrel comprises a firstbarrel body and a first pipe seat, and the outer wall of the first barrel body is connected with the first pipe seat. The molding bed forging method comprises the steps that the first barrel body isprepared, and a first protrusion is manufactured on the edge of one end of the first barrel body; the first protrusion is squeezed to make the side wall of the first barrel body to protrude outwards to form a second protrusion; and the second protrusion is squeezed to be manufactured into the first pipe seat. According to the molding bed forging method for the barrel with the side connection pipeseat and the die, an integrated barrel forge piece with the side connection pipe seat formed with the molding bed forging method avoids welding lines fundamentally, and thus the service stability of abarrel component with the side connection pipe seat is ensured. Furthermore, a forging assembly line is reserved to the maximum degree, the comprehensive mechanical performance of the forge piece isimproved, and thus the requirements, such as the requirement that container equipment in the nuclear electrical field is subjected to nuclear radiation in long term, are met.
Owner:CHINA FIRST HEAVY IND +1

Hydraulic conveying jack with adjustable base supports

The invention provides a hydraulic conveying jack with adjustable base supports. The hydraulic conveying jack comprises a hydraulic part base, a hydraulic part installed on the hydraulic part base andthree or more arc base supports evenly installed on the outer side of the hydraulic part base. Universal wheels are installed at the ends, away from the hydraulic part base, of the base supports. Theends, connected with the hydraulic part base, of the base supports are of up-down double-layer structures with U-shaped openings laterally formed. Connecting protruding blocks matched with the U-shaped openings are arranged on the hydraulic part base, and the connecting protruding blocks stretch in the U-shaped openings and are connected with the U-shaped openings through pin shaft assemblies. Upper-layer fixing holes and lower-layer fixing holes are formed in the base supports, and a limiting hole is formed in the hydraulic part base. The center lines of the upper-layer fixing holes, the lower-layer fixing holes and the limiting hole are located on the same cylinder face with the axes of the pin shaft assemblies as the rotating centers. Fixing parts used for fixing the state of the basesupports are further included. The base supports are simple in structure, the state is easy to adjust during use, and the requirements of different use environments can be met.
Owner:CHANGSHU TONGRUN AUTO ACCESSORY

Cable for LVDS (Low-voltage Differential Signal) transmission

The invention relates to a signal transmission cable, in particular to a cable for LVDS (Low-voltage Differential Signal) transmission, which solves the problem that the conventional mediums for LVDS transmission in China affect signal quality during long-distance transmission. The cable includes two wire harnesses, a shielding layer and a sheath, wherein each wire harness is wrapped by an insulation layer, the two wire harnesses are located in the shielding layer, the sheath is located on the outer side of the shielding layer, each wire harness is formed by a plurality of wires which are twisted, the diameter of each wire is 0.16mm, the pitch diameter of each wire harness is no larger than 16 and no smaller than 8, each insulation layer is formed through the winding and sintering of 1-3 layers of turned polytetrafluoroethylene films, the shielding layer is formed through the weaving of soft round silver-plated wires, and the sheath is formed through the winding and sintering of polyimide/fluoroplastic laminated films. The signal transmission distance of the cable provided by the invention reaches 1,000mm-3,000mm; and the cable has high vacuum stability and ozone resistance and better irradiation-resisting performance, and can meet the service environment requirements of the outer space.
Owner:BEIJING INST OF ELECTRONICS SYST ENG
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