90results about How to "Well formed" patented technology

The invention discloses a 3D printing method with a coating supporting structure and a supporting assembly, and belongs to the technical field of additive manufacturing. According to the method, a traditional thought of printing a second structural material is abandoned, a functional coating used for reducing the binding force is innovatively arranged on the upper surface of a formed supporting structure, and then a workpiece is printed on the coating. The coating provides temporary bonding force in the printing process so as to stabilize a workpiece, and after printing, the bonding force is greatly weakened so that the support can be easily peeled off. The invention further provides a post-processing G code program for realizing the method and an integrated gluing device, and the post-processing G code program and the integrated gluing device can realize the expansion and contraction of the refill through mechanical triggering by utilizing the movement of the printer without additional driving. The support assembly is a ready-to-use component which is pre-coated with the coating. According to the method, the contradictions of poor supporting quality of a single material and high supporting cost of multiple materials are fundamentally solved, stable printing, easy removal and high interface quality are realized on the premise of not increasing the types of printing materials and not depending on multi-nozzle equipment, the cost is remarkably reduced, and the efficiency is improved.

The embodiment of the application discloses a non-circular helical gear tooth surface design method, and relates to the field of gear design. The method comprises the following steps: establishing a three-dimensional motion relationship of a non-circular helical gear and a circular helical gear generating wheel; obtaining a tooth surface envelope equation of the non-circular helical gear according to the three-dimensional motion relationship; establishing a tooth surface equation of the circular helical gear generating wheel and obtaining a tooth surface meshing equation of the non-circular helical gear and the circular helical gear generating wheel; and obtaining a tooth surface equation of the non-circular helical gear according to the tooth surface envelope equation, the tooth surface equation of the circular helical gear generating wheel and the tooth surface meshing equation. Through the above method, the precision of the tooth surface of the non-circular helical gear can be improved, and the obtaining process is simpler.

The invention relates to a phase noise compensation method and a distributed optical fiber sound wave sensing system. The method comprises the following steps: S1, simultaneously receiving a light source phase noise signal and a coherent receiving signal of a scattering signal for sensing through a group of coherent receivers; s2, performing low-pass and high-pass filtering on the coherent receiving signal, and extracting a light source phase noise reference signal and a sensing signal; s3, on the basis of the phase noise reference signal, respectively performing phase noise extraction and reconstruction on the transmitted detection optical signal and the local oscillation optical signal in the coherent receiving process; s4, compensating phase noise introduced by local oscillation light according to the reconstructed phase noise signal, and performing time domain and frequency domain reconstruction on the detection light signal to obtain a matched filtering kernel function after phase noise compensation; and S5, carrying out signal demodulation based on the coherent receiving signal after phase noise compensation and the reconstructed matched filtering kernel function. Compared with the prior art, high-precision phase noise compensation can be realized under the condition of low complexity.

A method for preparing a multi-component polyimide resin includes the steps of first preparing polyimide acid (PAA) and then preparing the multi-component polyimide resin. The multi-component polyimide resin employs a unique molecular structure design, which endows the material with excellent heat resistance. It exhibits superior heat resistance, maintaining structural stability and performance unchanged at high temperatures, which is particularly important for temperature-sensitive fields such as aerospace and electronic packaging.

The present application relates to a kind of modified purple pottery product with high luster texture preparation method, the method comprises: adding a certain proportion of micron grade magnesium oxide powder to building water pottery clay, while controlling the viscosity and moisture content of pottery clay with water;Forming into any shape by pulling blank;Or adding sodium silicate powder and micron grade magnesium oxide powder to building water purple pottery slurry, while controlling the viscosity and fluidity of pottery clay with water, and forming into any shape by slip casting;After drying, calcining, temperature holding cooling to room temperature, form purple pottery product.The purple pottery product prepared by the present application has a glossy surface, is easy to clean and does not leave dirt, and produces a natural jade texture.Compared with the current traditional purple pottery product, which needs to be polished or glazed to have a glossy surface, the present application reduces processing procedures and thus reduces processing cost and energy consumption.In addition, magnesium is an essential and healthy element for human body, so the present application expands the product form of purple pottery and increases the commercial value of JianShui purple pottery.

The utility model belongs to the field of coating devices, and particularly relates to a wire and cable insulating layer coating device which comprises a base, and an unwinding frame is arranged on the top of the base. A winding frame is arranged at the top of the base; a first motor is mounted on one side of the winding frame; an extrusion molding discharging barrel is mounted at the top of the base; the top of the extrusion molding discharging barrel is connected with an extrusion molding structure; a water tank is arranged at the top of the base; cooling water is arranged in the water tank; a vertical plate is arranged at the top of the base; a plurality of mounting seats are arranged on the two sides of the vertical plate; a UV curing lamp is mounted on the surface of the mounting seat; convex lenses are symmetrically and fixedly connected to the middle part of the mounting seat; the convex lens is positioned among the plurality of mounting seats; through cooperation of the UV curing lamp and the convex lens, light emitted by the UV curing lamp can be focused by the convex lens to reach the surface of the cable, the curing speed of the cable insulation layer after coating is accelerated, and subsequent molding of the cable insulation layer is facilitated.

This invention discloses a manufacturing apparatus for silicon carbide single crystal production, belonging to the technical field of silicon carbide single crystal production equipment. It includes a support frame on which a heating barrel is fixedly mounted; a first rotating plate rotatably mounted on the heating barrel, on which a positioning component is mounted; a holding cylinder located inside the heating barrel and connected to the positioning component; a drive motor with its output end connected to a reciprocating motion component; an air blower and an air extraction pipe, both mounted on and connected to the heating barrel; and a gas supply and exhaust component mounted on the support frame and connected to the reciprocating motion component. A lifting electric cylinder drives the seed crystal cylinder to rise and fall, thereby controlling the position of the seed crystal cylinder within the holding cylinder, facilitating the formation of silicon carbide single crystals. Rotating the first rotating plate allows the formed silicon carbide single crystal to be carried out of the heating barrel. The cooperation of the gas supply and exhaust component and the reciprocating motion component allows the original air in the heating barrel to be discharged, and inert gas to be introduced into the heating barrel, thus providing a gaseous environment for the formation of silicon carbide single crystals.

The application discloses a flexible spacecraft attitude control method and system, and the method comprises the following steps: establishing a flexible spacecraft attitude control model and a flexible accessory model; according to the homogeneous system theory, the flexible spacecraft attitude control model and the flexible accessory model are simplified for multiple times to obtain a simplified flexible spacecraft attitude control model and a simplified flexible accessory model; according to the coupling relationship between the simplified flexible spacecraft attitude control model and the simplified flexible accessory model, a full drive model is obtained; the output equation in the flexible accessory model is combined to design an observer, the modal variable in the flexible accessory model is estimated through the observer, the full drive model is combined, and a controller is designed based on a high-order full drive system method; the controller is substituted into the full drive model to obtain a linear closed-loop system; according to a parameterized design method, a parameterized controller is obtained, and a stable linear closed-loop system is obtained. The application can stabilize the flexible spacecraft attitude control system.

The invention discloses an acetylene purification device and an acetylene purification method. The acetylene purification device comprises an absorption mechanism, a first desorption mechanism, a second desorption mechanism, a third desorption mechanism and an adsorption mechanism, the absorption mechanism is internally provided with an absorption cavity used for containing absorption liquid, the absorption mechanism further comprises an acetylene raw material feeding pipe and a cooler used for cooling the absorption liquid in the absorption cavity, and the gas outlet end of the acetylene raw material feeding pipe is inserted into the absorption liquid in the absorption cavity. According to the acetylene purification device disclosed by the invention, an original single desorption tower is divided into three stages of desorption mechanisms, so that not only can 4N-stage acetylene be obtained, but also impurities in the absorption liquid can be removed, the recycling times of the absorption liquid can be prolonged, and the production cost can be reduced. The purification cost is reduced and the purification efficiency is prolonged.

A radiation detector includes: a scintillator including a pair of end surfaces opposing each other in a first direction and one side surface coupling the pair of end surfaces; a semiconductor photodetector including a semiconductor substrate; and a wiring member electrically connected to the semiconductor photodetector. A length of the scintillator in the first direction is longer than a length of the scintillator in a second direction orthogonal to the one side surface. A length of the one side surface in the first direction is longer than a width of the one side surface in a third direction orthogonal to the first direction and the second direction. The semiconductor substrate includes a photodetection region disposed in a first portion and a first electrode and a second electrode disposed in a second portion. The photodetection region includes a plurality of avalanche photodiodes arranged to operate in Geiger mode and a plurality of quenching resistors.

The present invention relates to a steel sheet coated with a metallic coating comprising from 2.0 to 24.0% by weight of zinc, from 7.1 to 12.0% by weight of silicon, optionally from 1.1 to 8.0% by weight of magnesium, and optionally additional elements selected from pb, ni, zr or hf, the weight content of each additional element being less than 0.3% by weight, the remainder being made up of aluminium and optionally of unavoidable impurities and residual elements, the al / zn ratio being greater than 2.9.

The invention relates to the technical field of electrolytic copper foil production equipment, and discloses a tension roller tension calibration method and device and a crude foil engine, and the tension roller tension calibration method comprises the following steps: calibrating a torque-pressure conversion coefficient k; tension at the two ends of the tension roller is obtained, and the tension difference is calculated; according to the torque-pressure conversion coefficient k, the tension difference value is converted into the equivalent pressure difference needed by the two ends of the tension roller; according to the equivalent pressure difference, corresponding torque is applied to the two ends of the tension roller till the tension difference value is reduced to be within the threshold value, and balance tension calibration is achieved. By determining the torque-pressure conversion coefficient k, the torque of the driving assembly can be accurately converted into the pressure at the two ends of the tension roller, the corresponding pressure is applied to the two ends of the tension roller, and the tension difference value is reduced to be within the threshold value, so that the problem of imbalance of the two ends of the tension roller is accurately solved, copper foil wrinkling during equipment operation is avoided, and the product yield is increased; additional bending moment of the tension roller is eliminated, bearing abrasion is reduced, and the maintenance period is prolonged.

The application relates to the technical field of soot structure analysis, and discloses a crystal lattice stripe extraction method and device, computer equipment and a program product. The method can automatically, reasonably and accurately determine the target crystal lattice stripe corresponding to each skeleton connected domain one by one based on a chord direction stripe extraction scheme. Since the target crystal lattice stripe is extracted based on the chord direction, the method is also applicable to the extraction of the crystal lattice stripe of an original image with poor contrast or blurring, reduces the cost of manual identification and processing, effectively extracts the crystal lattice stripe with physical meaning, and solves the problem of low accuracy in the extraction of the crystal lattice stripe.

According to one embodiment of the present invention, provided are: a cell mass-forming member that is capable of easily forming a cell mass and superior in industrial mass productivity; a culture container equipped with the cell mass-forming member; a method for producing cultured cells using the cell mass-forming member; and cultured cells with a cell mass-forming member that are equipped with the cell mass-forming member. The cell mass-forming member 1B according to one example of the present invention has a base material 2, wherein: an adhesion inhibition area 3A and a cell adhesion area 4B are formed on the surface 2a of the base material 2; a micro-concavo-convex structure area 6 including a plurality of convex portions 7 is formed in the cell adhesion area 4B; and a hydrophilic coating layer 5 is formed on both the adhesion inhibition area 3A and the cell adhesion area 4B. The culture container and the cultured cells with a cell mass-forming member according to one example of the present invention are equipped with the cell mass-forming member 1B. The method for producing cultured cells according to one example of the present invention comprises using the cell mass-forming member 1B.

The utility model discloses a kind of puncture type welding-free joints, it is related to welding-free joint technical field, to solve the problems of existing puncture type welding-free joint complex structure, accessory, high cost. The puncture type welding-free joint includes joint shell and puncture type conducting sheet, joint shell is equipped with containing cavity, containing cavity both ends open, puncture type conducting sheet is installed in containing cavity, and one end of puncture type conducting sheet is equipped with puncture convex tooth;The joint shell on the side of puncture convex tooth is reversely connected with gland. The utility model only includes joint shell and puncture type conducting sheet two core components, simple structure, substantially reduce the number of accessories and production process, reduce production cost;Convenient to operate simultaneously, without professional tool and skill, can quickly complete light bar connection, and connection stability is high, effectively improve use experience, suitable for various connection scenarios of LED soft light bar.

The application discloses a method for intensifying a Passerini reaction based on a thin liquid film microreactor, and belongs to the technical field of process intensification of the Passerini reaction. In the method, a gas pipeline at an inlet section of the microreactor is extended into a pipeline of the microreactor, so that a uniform ultra-thin liquid film is formed on the inner wall of the pipeline, and alpha-acyloxyformamide can be synthesized efficiently and rapidly, and a pure product can be obtained by rotary evaporation. The method combines the advantages of the past methods, meets the requirements of high efficiency, rapidness, low cost and green chemistry, and can synthesize the product very simply and rapidly, thereby providing good experimental conditions for development of new molecules. Meanwhile, a continuous flow chemistry platform is built, thereby laying a foundation for subsequent industrial application.

The invention provides a preparation method and process system of isotropic coke, and the preparation method comprises the following steps: step 1, mixing crude oil with an oxidizing agent, and then carrying out electro-desalting treatment; step 2, carrying out atmospheric and vacuum distillation treatment on the mixture obtained in the step 1 to obtain a vacuum residue fraction; and step 3, carrying out delayed coking treatment on the vacuum residue fraction to obtain isotropic coke. According to the method, high-sulfur crude oil resources can be efficiently utilized, the effect that high-sulfur compounds in the raw materials are easily oxidized to generate sulfone or sulfoxide substances and play a role in inhibiting ordered arrangement of components in the coke forming process is exerted, the high-sulfur compounds are not left in coke, high-performance isotropic coke products are prepared, and the comprehensive utilization rate and the additional value of the raw materials are improved.

According to one embodiment of the present invention, a wheel bearing assembly for rotatably mounting and supporting a vehicle wheel to a vehicle body is provided. According to one embodiment of the present invention, the vehicle wheel bearing assembly includes: a wheel hub for mounting the vehicle wheel and rotating with the vehicle wheel; at least one inner ring pressed into and mounted on the outer peripheral surface of the wheel hub; an outer ring fixed to a vehicle body side member; a plurality of rolling elements rotatably supporting the wheel hub and the inner ring relative to the outer ring; and a constant velocity joint coupled to the wheel hub. According to one embodiment of the present invention, the constant velocity joint may be configured such that the outer axial end face of its shoulder contacts the inner axial end face of the wheel hub or the inner ring, and a low-friction metal alloy layer is provided on either side of the contact surface between the outer axial end face of the shoulder of the constant velocity joint and the inner axial end face of the wheel hub or the inner ring.

The invention relates to a preparation method of a nickel-based electrode and a method for electrocatalytic oxidation of 5-hydroxymethylfurfural (HMF) by using the nickel-based electrode. The nickel-based electrode comprises a substrate material and a catalyst layer, and the catalyst layer is nickel hydroxide in different forms or chromium-doped nickel hydroxide. According to the chromium-doped nickel hydroxide electrode, the catalytic performance of electrooxidation of HMF into 2, 5-furandimethyl (FDCA) can be greatly improved. Taking the nickel-based electrode as an anodic oxidation electrode, taking metal platinum as a cathode electrode, respectively filling two sides of a double-chamber electrolytic cell separated by an ion exchange membrane, adding an alkaline electrolyte into two sides of the electrolytic cell, and adding an HMF solution into the anode side; the electrocatalytic oxidation method is carried out in the electrolytic cell under a certain voltage, the anode is subjected to an HMF electrooxidation reaction and is converted into FDCA, and the cathode is subjected to an electrolytic water hydrogen evolution reaction. The nickel-based catalyst can efficiently electro-catalyze HMF to be oxidized into FDCA, meanwhile, the electrolytic water hydrogen evolution reaction is coupled, and the nickel-based catalyst has excellent catalytic efficiency and stability.

The application discloses a kind of Q550D high-strength steel flat-position robot automatic welding methods, comprising the following steps: (1) carry out welding groove processing, do not leave blunt edge, and the gap of groove root is 1-3mm;(2) using solid argon-rich gas shielded welding to carry out backing layer welding;(3) using flux-cored wire CO2 gas shielded welding to carry out filling layer welding;(4) using flux-cored wire CO2 gas shielded robot automatic welding to carry out cover layer welding.The application solves the welding problem of single-sided welding double-sided forming butt joint weld under the condition of not sticking backing pad and not cleaning root, and can effectively guarantee the first-time flaw detection pass rate of butt joint weld;Using the robot automatic welding method filled with flux-cored wire shielded welding to fill or cover welding, the welding process has high degree of automation, and the appearance of weld after welding is uniformly and beautifully formed;The weld has good strength index and excellent low-temperature impact toughness index, and meets the anti-impact performance requirements of high-strength level crash barrier.

This invention relates to the field of yield strength calculation technology, and in particular to a method for calculating the yield strength of 42CrMo steel used in engineering machinery. The method involves establishing a dimensionless model through data fitting between the yield strength Y1 and the quenching temperature X1, tempering temperature X2, and the mass percentage of Mn element X3: Y1 = 5479 - 2.81X1 - 4.643X2 + 889X3. This invention can accurately reflect the quantitative relationship between the heat treatment process parameters of 42CrMo steel, especially the tempering temperature and the yield strength, enabling the prediction of yield strength. This allows engineers to accurately predict the final properties of the material when formulating the heat treatment process, and to actively and accurately control the yield strength of the material by adjusting the process parameters.

The utility model belongs to water pump technical field especially points out a kind of welding pump cylinder for horizontal multistage pump, including the hollow and both ends open cylinder and the water inlet body being arranged in the left end of cylinder, be equipped with water outlet pipe on the cylinder, be equipped with water inlet pipe on the water inlet body, the left end of cylinder is bent to form annular plate one inward, the water inlet body is fixed on annular plate one by welding.The utility model can freely lengthen the length of cylinder, when needing to lengthen pump cylinder length, only need to lengthen the length of cylinder, water inlet body does not change, need not to open mould again, and cost is low.

The application provides a heating furnace intelligent distribution method and device of a fully-closed vacuum isothermal forging system, relates to the field of high-end intelligent device manufacturing, and is applied to an intelligent distribution device of a fully-closed vacuum isothermal forging system. The fully-closed vacuum isothermal forging system further comprises a plurality of heating furnaces in a vacuum environment and an intelligent robot for transferring a blank in the plurality of heating furnaces. The method comprises the following steps: obtaining attribute data of a blank to be distributed and performance data of an idle heating furnace; determining a target heating furnace corresponding to heating of the blank to be distributed based on the attribute data of the blank to be distributed, the performance data of the idle heating furnace and a heating furnace distribution model; and controlling the intelligent robot to transfer the blank to be distributed from an originally loaded heating furnace to the target heating furnace. The method is suitable for a heating furnace distribution process of a vacuum isothermal forging system, is used for improving transfer efficiency during blank heating, and improves the intelligent degree of the fully-closed vacuum isothermal forging system.

The present invention addresses the problem of providing a method for forming a molded article, capable of realizing a compression molding device and a compression molding method capable of preventing the occurrence of molding defects caused by winding unevenness, residual gas, and dust generation during molding, and capable of forming a molded article having a thin resin portion. Moreover, the processing before resin sealing can be facilitated, and the occurrence of damage during the processing can be prevented. As a solution, this method for forming a molded article comprises: a carrier mounting step in which a carrier (C) is mounted so as to be in contact with the bottom surface of a cavity (108) of a mold; a resin placement step in which a resin (Rm) is placed in the cavity (108); a temporary molded article forming step for forming a temporary molded article by sealing the carrier (C) with a resin (Rm); and a molded article forming step in which a molded article (Wp) is formed by heating or pressurizing in a state where a workpiece (W) including the electronic component is brought into contact with the temporary molded article.

The application discloses an antibacterial medical catheter gas-liquid co-assisted forming die and a method thereof. The die comprises a connecting pipe, a flow channel changing pipe, a machine head body, an extrusion outlet die and an outer die in sequence, and an extrusion channel is formed in the above structure units and is in communication with each other. Heating equipment and temperature sensing equipment are further installed. A melt flow dividing cone, a flow guide core rod body and a shaping rod body are sequentially assembled in the extrusion channel from left to right. An auxiliary gas mixing chamber and an inner auxiliary gas flow channel are formed between the melt flow dividing cone and the flow guide core rod body. The melt flow dividing cone is fixed by an inner auxiliary gas inlet bolt. A through gas inlet channel is arranged in the inner auxiliary gas inlet bolt. An inner auxiliary gas flow channel is arranged in the melt flow dividing cone. A powder metallurgy porous ring is arranged in the extrusion outlet die, and an outer liquid auxiliary liquid inlet bolt is inserted into the hollow. The gas-liquid co-assisted system is introduced to reduce the extrusion viscous resistance of the medical catheter, and the medical catheter is endowed with antibacterial properties and other functions, so that the die problem of high-quality extruded functional medical microcatheters is solved.

The utility model relates to vehicle body technical field and provide a kind of instrument panel stiffening beam and vehicle, the utility model discloses instrument panel stiffening beam includes instrument panel stiffening beam main body, and is located at the mounting bracket of stiffening beam main body length direction both ends, each mounting bracket is equipped with the first installation part of being installed in the stiffening beam sub-mounting bracket of instrument panel stiffening beam main body, and the second installation part of being installed in the stiffening beam general mounting bracket of instrument panel stiffening beam main body.The utility model discloses the instrument panel stiffening beam, only needs to adopt one mould processing, this not only can improve production efficiency, also can greatly simplify processing manufacturing process, while the quantity of spare part is less, can reduce the multiple spare parts such as bolt and connecting procedure required in traditional assembly mode, and management and production cost can be reduced, and tolerance in assembly process can be reduced, prevent the problem of not easy assembly when loading.

A martensitic stainless steel sheet for a brake disc rotor, characterized by containing predetermined components and having, in a mother phase, precipitates with a particle size of 2 µm or less and a density of 0.01 to 20 pieces / µm2. The precipitates finely present in hot rolling and hot-rolled sheet annealing improves productivity in hardening, improves temper softening resistance of the steel sheet in use as a component, inhibits cracking in hot stamping, and inhibits reduction in high-temperature strength. Accordingly, the martensitic stainless steel sheet excellent in temper softening resistance, hardenability, formability, and high-temperature strength that is applicable to the disc rotor is provided.

This invention belongs to the field of biomedicine, specifically relating to the application of caffeine in the preparation of a composition for improving liver inflammation and oxidative stress damage associated with high red meat intake. This invention is the first to discover that caffeine can significantly inhibit liver inflammation and oxidative stress phenotypes and improve liver function indicators in the context of high HLC exposure. Caffeine is a mature raw material with abundant dosage forms, easily forming oral formulations or food compositions, suitable for rapid intervention or long-term risk management after short-term high red meat intake, and has good operability. Caffeine can be combined with gut microbiota modulatory components to form compositions that balance short-term effects with long-term microecological improvement. In the application provided by this invention, through caffeine intake, animal experiments have shown that it can comprehensively improve abnormal lipid metabolism and liver histological damage, demonstrating systemic metabolic protective potential.

The application relates to the technical field of electric connectors, in particular to a connector which comprises a terminal module and a conductive buckle plate, the terminal module comprises an insulator and a signal crimping part and a ground crimping part located at a crimping end of the connector, the conductive buckle plate is provided with a signal avoiding hole for avoiding the signal crimping part and a ground avoiding hole for avoiding the ground crimping part, one side of the insulator in the thickness direction is provided with a conductive shielding sheet, the conductive shielding sheet comprises a main sheet body and a tab part protruding at the edge of the main sheet body close to the crimping end of the connector, the conductive buckle plate is provided with an assembly groove for forcibly assembling the tab part, and the side surface of the tab part in the thickness direction is in contact with the groove wall of the assembly groove; the tab part is not easy to be damaged during the forcible assembly, and the side surface of the tab part in the thickness direction is in contact with the groove wall of the assembly groove, so that the conductive buckle plate is not easy to be damaged.