25results about How to "Guaranteed performance consistency" patented technology

The invention relates to the technical field of cement-based composite cementing material preparation, in particular to a low-carbon environment-friendly cement-based composite cementing material and a preparation method thereof.The preparation method comprises the steps that an initial forming object is subjected to regional division according to position characteristics so as to obtain real-time monitoring results of all target monitoring regions, determining the actual state of each target monitoring area according to the real-time monitoring result; analyzing the actual state to determine a single mixing amount set of each target monitoring area; integrating the single mixing amount sets to obtain a target mixing amount set, and sequentially performing stirring and pouring molding according to the target mixing amount set to obtain a target molded object; in the stirring process, the initial stirring parameters are adjusted according to the actual stirring degree in combination with the overall analysis result, so that actual stirring parameters are determined; and in the pouring forming process, the initial pouring parameters are adjusted according to the bubble generation rate in combination with the overall analysis result, so that the actual pouring parameters are determined.

The invention discloses a metal and carbon fiber thermoplastic composite material connecting structure, a fixed loading table, welding equipment and a welding process. The connection structure of the metal and the carbon fiber thermoplastic composite material comprises a metal connection strengthening structure, a metal plate, a carbon fiber thermoplastic composite material plate, a Z-shaped structure, a positioning step, a first welding surface, a second welding surface, a metal plate welding surface, a first area and a second area, the second welding face is connected with the first face of the carbon fiber thermoplastic composite material plate in a welded mode, and the second area is connected with the second face of the carbon fiber thermoplastic composite material plate in a welded mode. The fixed loading platform comprises an upper fixed loading platform and a lower fixed loading platform; the welding equipment comprises a fixed loading table, laser welding equipment and a load applying mechanism. According to the method, the connection strength, stability and reliability of the metal and carbon fiber thermoplastic composite material are improved, the welding accuracy and welding quality are improved, and the performance consistency of the connector is guaranteed.

The invention discloses a low-expansion three-temperature cold and hot plate and a preparation method, and belongs to the field of precise alloy components. The cold and hot plate is made of titanium-niobium-based alloy, the titanium-niobium-based alloy comprises, by atomic percent, 25%-35% of Nb, the total content of V and / or Ta smaller than or equal to 3% and the balance Ti, the titanium-niobium-based alloy comprises a three-temperature structure of a low-temperature adaptation area, a normal-temperature stable area and a high-temperature tolerance area, the thickness of the titanium-niobium-based alloy ranges from 1.5 mm to 2 mm, and the surface of the titanium-niobium-based alloy is provided with a nitride layer or a passive film. The preparation method comprises the steps of burdening, 2-3 times of vacuum consumable smelting, hot forging, hot rolling, partition cutting, pre-deformation regulation and control, solid solution quenching, cold rolling finishing, splicing forming and the like, and vacuum stress relief annealing and dual performance detection are matched. The method is suitable for scenes such as chip packaging and precision detection, and is low in cost and high in qualified rate.

The utility model discloses a POP packaging structure of a millimeter wave transmission device, which comprises a top substrate, a top packaging body, a top welding piece, a bottom substrate, a bottom packaging body and a bottom welding piece, and the top packaging body and the bottom packaging body are chip packaging bodies capable of transmitting millimeter wave signals. Each of the top packaging body and the bottom packaging body comprises a first surface and a second surface which are oppositely arranged and a side surface connected with the first surface and the second surface, each of the top substrate and the bottom substrate comprises a first surface and a second surface which are oppositely arranged and a side surface connected with the first surface and the second surface, the first surface of the top packaging body is arranged on the first surface of the top substrate, and the second surface of the bottom packaging body is arranged on the second surface of the bottom substrate. The top welding piece is arranged on the second surface of the top substrate, the first surface of the bottom packaging body is arranged on the first surface of the bottom substrate, and the bottom welding piece is arranged on the second surface of the bottom substrate; the packaging structure further comprises insulating glue and packaging pieces, the second face of the top packaging body and the second face of the bottom packaging body are oppositely arranged and bonded through the insulating glue, and the packaging pieces are arranged on the side face of the top substrate, the side face of the bottom substrate, the side face of the top packaging body and the side face of the bottom packaging body.

This utility model discloses a water system and a water purification device, belonging to the field of water treatment devices. The water system includes: an inlet, a pure water path, a pure water branch path, a mineralized water path, a regulating water path, and a faucet. The pure water path is connected to the inlet. Both ends of the mineralized water path and the pure water branch path are connected to the pure water path and the faucet, respectively. The inlet of the regulating water path is connected to the pure water branch path, and the outlet of the regulating water path is connected to the outlet of the mineralized filter element. The regulating water path also includes a flow regulation mechanism. By setting up a dedicated regulating water path between the pure water branch path and the mineralized water path, the concentration of the mineralized water is adjusted by recirculating pure water to dilute the mineralized water. This achieves a more precise and stable method of mineral concentration adjustment, improving the user experience. Furthermore, this adjustment method allows the mineralized filter element to operate under relatively stable working conditions, which helps maintain the performance consistency of the mineralized filter element.

The invention relates to the technical field of anti-corrosion coatings, in particular to a preparation method of conductive metal anti-corrosion paint, and the prepared coating can remarkably improve the corrosion resistance of the 304 type stainless steel surface. Compared with uncoated 304SS bare steel, the corrosion potential of 304SS under the protection of the coating is obviously increased, the corrosion current density is obviously reduced, the ZIFs / GO composite material is adopted as epoxy resin coating filler, and PPY is assisted to prepare the anti-corrosion coating. The ZIFs has unique crystal structure and chemical properties, the GO has excellent barrier property and mechanical property, the PPY has good conductivity and oxidation-reduction property, the ZIFs, the GO and the PPY cooperate with one another, so that the coating has better comprehensive performance, and the ZIFs / GO composite material can enhance the binding force between the coating and a matrix and improve the barrier property of the coating at the same time; and the PPY surface layer can further improve the conductivity of the coating and is beneficial to exerting the anodic protection performance in a corrosive environment, so that the matrix metal is better protected.

The invention relates to the technical field of novel sensing materials, in particular to an rGO / Zr-MOF composite sensing material for noise, a preparation method of the rGO / Zr-MOF composite sensing material and application of the rGO / Zr-MOF composite sensing material to a noise sensor. The preparation method comprises the following steps: S1, ultrasonically dispersing graphene oxide GO in ethanol, then adding hydriodic acid, carrying out an oil bath reaction, removing iodine, centrifuging to obtain a solid product, centrifugally washing, and drying the solid product to obtain rGO; s2, zirconium salt is dissolved in N, N-dimethylformamide, an organic ligand 4, 4 '-stilbene dicarboxylic acid is added, then the rGO prepared in the S1 is added, ultrasonic dispersion is conducted, and then an oil bath reaction is conducted; and S3, carrying out centrifugal washing on the reaction liquid obtained in S2 to remove supernate, so as to obtain the rGO / Zr-MOF composite sensing material. The rGO / Zr-MOF composite sensing material prepared by the invention is used as a sensing element, and can efficiently receive noise and convert the noise into measurable electric signals.

This invention relates to a precision processing method for photolithographic mask substrates, comprising: cleaning the photolithographic mask substrate blank using single-slot multi-frequency ultrasonic cleaning; polishing the photolithographic mask substrate blank to its full aperture using a planetary double-sided polishing machine to obtain a preliminary photolithographic mask substrate shape; rapidly removing the shallow damaged layer of the preliminary photolithographic mask substrate shape by high-frequency vibration etching with a hydrofluoric acid mixture; correcting the surface shape of the preliminary photolithographic mask substrate shape and removing surface defects using a double-sided polishing machine; detecting the double-sided surface shape of the preliminary photolithographic mask substrate shape after surface defect removal using a laser interferometer; deterministically correcting local surface shape errors of the preliminary photolithographic mask substrate shape through sub-aperture polishing; and controlling the surface roughness of the corrected preliminary photolithographic mask substrate shape to the sub-nanometer level using an ultra-smooth polishing process to obtain the photolithographic mask substrate. This method reduces the number of traditional iterative polishing cycles, shortens the processing cycle, and avoids surface damage caused by traditional long-term mechanical grinding.

The invention discloses a preparation method for synthesizing ferric phosphate from ferric chloride, and relates to the technical field of preparation of ferric phosphate, the technical key point of the preparation method comprises the following steps: S1, dissolving and heating: adding ferric chloride and ammonium dihydrogen phosphate into a three-neck flask, pouring deionized water, stirring and dissolving, heating to 100 DEG C, and keeping for 3 hours; s2, pH adjustment: gradually adding ammonia water, controlling the pH value to 4-5, stopping heating, continuously and slowly adding ammonia water until the pH value reaches 5, heating to 100 DEG C, and keeping the temperature for 2 hours; and S3, washing: after the reaction is finished, washing the precipitate with warm water for three times. And S4, dehydration treatment: dehydrating the dried iron phosphate in a muffle furnace. And S5, preparation of lithium iron phosphate: mixing iron phosphate with a lithium source, carrying out ball milling and spray drying, and carrying out a sintering reaction at a high temperature to prepare the lithium iron phosphate. The method is simple and convenient to operate through mild liquid phase reaction, high-purity iron phosphate can be generated, and the method has relatively high production efficiency and low energy consumption.

This utility model relates to an assembly fixture, belonging to the field of thrust rod technology, specifically an open bushing type thrust rod assembly fixture, including a housing. An assembly assembly component is provided on the outside of the housing, comprising a base, a reducing ring, and a rubber bushing. In this utility model, the rubber bushing is placed inside the reducing ring. An external power device drives a pressure head to move downwards. Under the compression of the inner wall of the reducing ring, the rubber bushing shrinks, facilitating its insertion into the housing. The portion of the rubber bushing inserted into the housing returns to its original shape due to its elasticity, fitting tightly against the inner wall of the housing. This achieves the effect of facilitating the installation of the rubber bushing, solving the problem of easy damage to the rubber bushing during assembly, ensuring the performance and dimensional consistency of the assembled assembly, and improving product stability. It also solves the problem of large interference fit dimensions between the existing bushing and housing, leading to damage to both.

The invention discloses a cable risk detection method and device, and a storage medium. The method comprises the following steps: determining a to-be-tested wire section in a cable; counting threat coefficients of bird attacks when cables are laid in a regional overhead mode; performing an operation pressure test on the wire section to obtain an operation state of the wire section, and a termination depth and a temperature value of a rubbing point; according to the operation state, the termination depth and the temperature value, screening a faulted wire section as a target section; judging whether the cable meets a preset shipment standard or not according to the target section; if the delivery standard is met, allowing the cable to be provided for the user; if the cable does not meet the shipment standard, the cable is scrapped when the cable does not meet the design requirement, and the cable is provided for a user when the cable meets the design requirement. According to the embodiment, the performance consistency of the cable is guaranteed, the cable can be normally used in a laying area, the problem that the cable is short-circuited and ignited is solved, and normal operation of a power system is guaranteed.

The invention discloses a rolling and cooling process for Nb-containing medium-carbon hub bearing steel, which relates to the technical field of steel production and sequentially comprises the following procedures of heating, rough rolling, continuous rolling, temperature holding, pre-finish rolling, finish rolling and cooling. Wherein in the heating process, the continuous casting billet comprises the following chemical components in percentage by mass: 0.53 to 0.58 percent of C, 0.20 to 0.35 percent of Si, 0.75 to 0.90 percent of Mn, less than or equal to 0.020 percent of P, less than or equal to 0.005 percent of S, 0.20 to 0.35 percent of Cr, 0.05 to 0.050 percent of Al, 0.10 to 0.20 percent of Nb and the balance of matrix Fe and inevitable impurities. According to the controlled rolling cooling process of the Nb-containing medium-carbon hub bearing steel, the actual hot rolling grain size of finished round steel is larger than or equal to 5 grades, the austenite grain size is larger than or equal to 8.0 grades, and the hot rolling state hardness is smaller than or equal to 235 HB.

The utility model discloses a kind of range hood and cookers, it is related to the technical field of household appliances, comprising: shell, built-in motor, the motor can drive range hood rotation, the bottom of shell front side wall is provided with control panel;Camera module is set on the control panel, the camera module is located at the center of shell front side wall, the camera module includes module main body, the module main body is fixedly connected with several infrared camera and image camera, the infrared camera is distributed in the left and right sides of the image camera;Camera module real-time acquisition cooker area image information and dynamically adjust the wind power of range hood, improve energy efficiency, improve user experience satisfaction, camera module is set in the center position of control panel horizontal direction, can only be gathered to the image information of at least two cookers burner by one camera module.

The invention discloses a constant-temperature self-heating traditional Chinese medicine acupoint patch and a preparation method thereof, and belongs to the technical field of medical supplies. The traditional Chinese medicine acupoint application comprises an outermost layer, a heating layer, a bonding layer, a medicine layer and release paper, the heating layer is formed by uniformly coating a constant-temperature self-heating material, the medicine layer comprises an anti-seepage ring arranged on the sticking layer, a positioning ring matched with the anti-seepage ring and a traditional Chinese medicine preparation, and the traditional Chinese medicine preparation is traditional Chinese medicine gel or traditional Chinese medicine ointment. Wherein the constant-temperature self-heating material is prepared from the following components in parts by mass: 10 to 20 parts of reduced iron powder, 0.5 to 3 parts of vermiculite, 1 to 5 parts of activated carbon, 0.5 to 3 parts of sodium chloride, 0.1 to 2 parts of poly (N-isopropylacrylamide), 0.1 to 2 parts of hydroxypropyl methyl cellulose and 5 to 10 parts of water. The traditional Chinese medicine acupoint application disclosed by the invention can stably maintain a proper temperature for a long time, promote transdermal absorption of traditional Chinese medicine components, enhance the stimulation effect on acupoints and improve the treatment effect.

The invention provides a vehicle-mounted refrigerator inner container and a preparation method thereof, materials for preparing the vehicle-mounted refrigerator inner container comprise matrix resin, a composite heat conduction agent, a reinforcing agent, a compatilizer, a lubricant and an antioxidant, the matrix resin comprises an acrylonitrile-butadiene-styrene copolymer, and the composite heat conduction agent comprises an acrylonitrile-butadiene-styrene copolymer. The composite heat conduction agent comprises carbon nanotubes, graphene and aluminum nitride. The composite heat conduction agent is added, the heat conduction coefficient of the inner container of the vehicle-mounted refrigerator is increased, heat conduction is facilitated, and therefore the refrigeration efficiency is improved, and energy is saved.

The invention relates to the technical field of magnetorheological dampers, and discloses a large-torque reciprocating rotation type magnetorheological damper which comprises a liquid cavity, an air blowing mechanism is arranged in the liquid cavity, a cooling mechanism is arranged at one end of the air blowing mechanism, a damping mechanism is arranged in the liquid cavity, and a stirring mechanism is arranged at the bottom of the liquid cavity. The air blowing mechanism comprises a piston, the outer portion of the piston is slidably connected to the inner wall of the liquid cavity, a baffle is fixedly connected to the inner wall of the liquid cavity, an air exhaust pipeline is fixedly connected to the inner wall of the liquid cavity, a filter screen is installed in the air exhaust pipeline, and an air outlet pipeline is fixedly connected to the inner wall of the side, away from the air exhaust pipeline, of the liquid cavity. The rotating disc is pressed downwards, the driving shaft body drives the piston to extrude gas in the liquid cavity, under the control of the one-way valve, the gas is guided into the cooling pipeline, heat generated during operation of the electromagnetic coil is absorbed, and therefore temperature rise of the electromagnetic coil is effectively controlled, and long-term stable operation of the damper is guaranteed.

The invention relates to a mineral crystal active material and a preparation method thereof, in particular to a mineral crystal active material prepared from tuffaceous slate and application of the mineral crystal active material in cosmetics and nursing materials. The preparation method comprises the following steps that the tuffaceous slate is sequentially subjected to crushing, calcining, water quenching, acid pickling, water washing, drying and grinding treatment, and the superfine mineral crystal active material with the particle size being 1-5 micrometers is obtained. According to the mineral crystal active material prepared from tuffaceous slate and the preparation method of the mineral crystal active material, the mineral crystal active material not only has excellent physical and chemical characteristics, but also is excellent in application performance in cosmetics and nursing materials, the skin care effect of products can be remarkably improved, and meanwhile, the naturalness and safety of the products are kept.

The invention discloses a manufacturing method of a 6061T6 aluminum alloy rotating shaft die forging, and particularly relates to the technical field of aluminum alloy rotating shaft die forging manufacturing, which comprises the following steps: firstly heating a blank to a first temperature for heat preservation, then heating to a second temperature for heat preservation, and simultaneously heating a die for heat preservation; upsetting, drawing, squaring, chamfering, rolling and pre-forming the homogenized blank, monitoring the temperature of the blank in real time in the process, and carrying out remelting heat preservation control; and the blank obtained after blank making is transferred into a preheating die, closed die forging is conducted at the sectional strain rate under the isothermal condition, and the final forging temperature is controlled. Through cooperation of multiple processes, grain refinement and structure homogenization are achieved, the strength, plasticity and fatigue life of the forged piece are remarkably improved, meanwhile, the material utilization rate and the process stability are greatly improved, and the method is suitable for batch manufacturing of high-performance aluminum alloy rotating shafts in the fields of aerospace, automobiles and the like.

The utility model discloses a carbon dioxide laser annular beam optical fiber tapering machine which comprises a laser light source box, one side of the laser light source box is fixedly connected with a light source carbon dioxide laser, and the light source end of the light source carbon dioxide laser emits laser beams. The laser beam is turned to the position above the laser light source box through a refraction mechanism, a red light mechanism is arranged at the top of the laser light source box, the laser beam and the red light mechanism form laser and red light rays, the laser beam and the red light mechanism form light spots, and how the annular light beam is generated is not elaborated. According to the carbon dioxide laser annular light beam optical fiber tapering machine, the annular light beam can be reflected to the reflecting mirror and then is emitted to the concave mirror through the reflecting mirror and the aperture, so that the annular light beam can be regathered into a light spot to be emitted to the workbench, laser and red light act at the same time for tapering machining, and therefore external interference factors can be greatly reduced; the temperature fluctuation range is small, and the effect of guaranteeing the product performance consistency and the high yield is achieved.

This invention discloses a method for preparing a highly reactive AKD emulsion, as well as the high-reactivity AKD emulsion and its applications. The method includes the following steps: slowly adding the oil phase to the aqueous phase and pre-emulsifying for 10-20 minutes under high-speed shear emulsification to obtain a coarse emulsion; pumping the coarse emulsion into a dual-grinding-disc system composed of a first colloid mill and a second colloid mill connected in series, where the emulsion is successively ground and dispersed by the two grinding discs to obtain a refined emulsion; sending the refined emulsion into a circulating stabilization tank, continuously stirring at 40-50°C, and then returning the emulsion to the inlet of the dual-grinding-disc system via a circulating pump for cyclic grinding and stabilization treatment; cooling and filtering to obtain a highly reactive AKD emulsion. This invention utilizes differentially spaced dual-grinding-disc series grinding combined with low-temperature cyclic stabilization. Through stepwise refinement and cyclic stabilization treatment, it significantly reduces the emulsion particle size, improves particle size uniformity, enhances the interfacial reactivity of AKD particles, and greatly inhibits hydrolysis, thereby achieving efficient sizing at low dosages.

According to the high-isolation antenna array based on the MEMS technology and the preparation method, the characteristic of high processing precision of the silicon-based MEMS technology is utilized, the size of the antenna array is accurately controlled, the performance consistency in the W wave band is ensured, the loss caused by processing errors is effectively reduced, the radiation efficiency and the gain stability of the antenna are improved, and the antenna array is suitable for large-scale popularization and application. The formed antenna array is miniaturized and high in integration level, batch production is facilitated, production cost is reduced, a shielding cavity formed by the third TSV columns and an isolation structure formed by the first TSV columns and the second TSV columns are designed, space coupling of signals in the transmission process from a radio frequency signal line to a feed probe is effectively restrained, and the antenna array is more compact in structure and more compact in structure. The antenna array isolation degree is improved, the performance of the antenna is remarkably improved, the performance deterioration caused by array pattern distortion and cross coupling change during large-angle beam scanning is effectively reduced by optimizing the antenna array layout and the low cross coupling design, a wider scanning angle range is supported, and the space coverage capacity of the antenna array is improved.

The application discloses a kind of optical fiber hydrophone array remote transmission system and method, system includes the optical emission module of dry end, optical receiving module, Raman pumping unit and state management unit, and the relay amplifier and optical fiber hydrophone array of wet end;Optical emission module is amplified to power pre-emphasis downlink multi-wavelength laser pulse power;Optical receiving module restores sound field information to uplink multi-wavelength interference optical signal;Relay amplifier is amplified after input optical fiber hydrophone array to downlink multi-wavelength laser pulse, uplink multi-wavelength interference optical signal is amplified after input optical receiving module;Raman pumping unit outputs multi-wavelength Raman pump light, and the uplink multi-wavelength interference optical signal of relay amplifier output is carried out reverse distributed fiber Raman amplification;State management unit is configured different wavelength Raman pump laser power for Raman pumping unit;Optical fiber hydrophone array receives downlink multi-wavelength laser pulse, and outputs multi-wavelength interference optical signal carrying sound field information.

The present invention relates to the field of hollow coil processing, and in particular to a hollow coil winding method and winding device, wherein a first fixed point and a second fixed point are preset; one end of a copper wire is fixed at the first fixed point to form a starting line; the copper wire is pulled onto a core shaft, and the first fixed point and the second fixed point are coaxially rotated around the core shaft at the same angular velocity while the core shaft is driven to rotate, and the other end of the copper wire is fixed at the second fixed point after rotating a preset number of circles to form a tail line; the starting line and the tail line are cut at preset cutting positions at the same distance from the core shaft, respectively, to obtain a hollow coil. The present invention provides a hollow coil winding method and a winding device, which, compared with the traditional hollow coil processing method, ensure the cutting accuracy of the first line and the tail line, and after the cutting is completed, there is no need to process the first and tail ends of the coil again, which simplifies the processing steps, improves the processing efficiency, ensures the consistency of product shape and performance, and is conducive to the improvement of product quality.

This invention discloses an intelligent and rapid loading and unloading processing system for rubber sealing rings. Its structure includes a fixed frame, a support rod, a loading and unloading assembly, a nozzle, a control box, a motor, and a moving rail. The fixed frame is fixed to the support rod, the loading and unloading assembly is supported and fixed by the support rod, the moving rail is connected to the fixed frame, the support frame is supported between the moving rail and the control box, and the control box is connected to the nozzle for control. The motor controls the support frame to move along the moving rail, precisely limiting the amount of colloid extruded into the mold cavity. Through the uniform downward movement of the push plate driven by the colloid, combined with the limiting effect of the mold shell and the push plate, a closed and fixed-size molding space is formed. This prevents the colloid from flowing turbulently due to excessive pre-reserved space, effectively suppressing the generation and residue of air bubbles, while ensuring that the colloid is smoothly filled into the mold groove at a uniform speed, ensuring dense filling of the cavity and improving the density uniformity and dimensional accuracy of the formed rubber ring.

The application discloses a rolling method of a large-size TA15 titanium alloy super-thick plate, and the method comprises the following steps: firstly, sequentially performing twice beta single-phase zone forging, twice alpha+beta two-phase zone forging and forming forging on a TA15 titanium alloy ingot to obtain a TA15 titanium alloy slab; secondly, performing ladder heating on the TA15 titanium alloy slab; thirdly, obtaining a TA15 titanium alloy rolling slab through one-time rolling; fourthly, performing finish heat treatment after turning over, and air cooling after reciprocating straightening; and fifthly, performing shape correction treatment to obtain a finished TA15 titanium alloy super-thick plate. The original beta grains are fully broken through the five-time forging, ladder heating and one-time rolling in sequence, the rolling slab with consistent structure and performance is obtained, the grain growth is inhibited, the strengthening phase is precipitated through the rapid water cooling treatment, the heat treatment and the shape correction treatment, the TA15 titanium alloy super-thick plate with small grain size, small anisotropy and excellent performance is obtained, and the TA15 titanium alloy super-thick plate is suitable for large structural parts in the fields of aviation and spaceflight.