1837results about How to "Solve for uniformity" patented technology

The invention discloses a film deposition method which comprises the following steps: placing a first electrode plate used as an anode and a second electrode plate used as a cathode in parallel in a reaction chamber, wherein the surface of the second electrode plate facing to the first electrode plate is provided with a sacrificial layer; putting a substrate on the surface of the first electrode plate facing to the sacrificial layer; leading etching gas into the reaction chamber; grounding the first electrode plate, and applying DC negative voltage to the second electrode plate; ionizing the etching gas into a plasma so as to etch the sacrificial layer, and depositing a film on the surface of the substrate. The film deposition method can improve the performance, particularly the stability of the film and the uniformity of large-area film deposition.

The invention discloses a system and a method for on-site point-by-point calibration of the brightness and chrominance of the whole screen of an LED display screen. The system comprises LED display screen optical parameter acquisition equipment, display screen calibration parameter processing equipment, display screen signal input control and parameter transmission equipment and display screen calibration operation and screen control equipment. The method comprises the following steps: acquiring image data of information on original red, green and blue values of a single point in the lightened part of the LED display screen and values of actual brightness and colors when single colors of red, green, blue and while are displayed; and determining the calibration coefficients of the single point to realize calibration. The method acquires data by in a way of uniformly distributing the luminous points of the display screen in arrays which have the same point number and shape and alternately distributed at equal intervals, thereby avoiding clear horizontal and vertical patterns which use an acquisition area as a unit and are caused by the jump of regional edge calibration data when an original suborigin acquires data and interference among adjacent points caused by reduced pixel pitch and ensuring the calibration effect.

The invention provides a pixel circuit and a driving method thereof, an array substrate, a display panel and a display device. The pixel circuit comprises a light-emitting component, a driving transistor, a first storage capacitor, a light-emitting control module, a data write-in module and a compensation module. The data write-in module controls data voltage Vdata to be written into a second pole of the driving transistor in the compensation stage; and the compensation module controls a first pole of the driving transistor to be connected with the grid electrode of the driving transistor in the compensation stage to control the driving transistor to be conducted and control the conduction current of the driving transistor to flow from the second pole of the driving transistor to the first pole of the driving transistor until the electric potential of the grid electrode of the driving transistor is Vdata+Vth, wherein the Vth is a threshold voltage of the driving transistor. The problem that the threshold voltage of the driving transistor cannot be compensated in the light-emitting stage, and thus uniformity of brightness of the display panel is poor in the prior art is solved.

The invention provides a novel preparation method of a high-performance continuous ZIF-8 (zero insert force-8) film for the high-performance separation and purification of gas, and mainly aims at solving the combination problem among a continuous even growth film, a film and a carrier of the ZIF-8 film. The preparation method is mainly characterized by comprising the following steps of: previously introducing growth point and a combination point on the surface of a porous carrier to form a thin layer of zinc oxide coating layer taken as a finished film, and growing in an inducing way to form the continuous even ZIF-8 film. An active point of the film homogeneous nucleation is introduced, the combination force problem between the film and the surface of the carrier is solved, and the surface of the carrier is modified by the coating layer, so that the high-quality film can be preferably formed. Compared with the conventional preparation method of the ZIF-8 film, the novel method adopted by the invention not only is high in film-forming effective mass, simple in process, and convenient for large-scale preparation and amplification, so that the method has a potential application prospect and a wide application value.

The invention relates to a multifunctional model test system for tunnel and underground engineering. The test system comprises a rail, a model box, a servo-controlled test loading device, a rotating seat, rotating shafts and a bracket, wherein the rail is arranged on the upper part of the test system; the model box is arranged on the middle part of the test system and comprises an outer frame, an inner frame and an organic glass plate; the servo-controlled test loading device comprises a horizontal loading jack and a vertical loading jack; the rotating shafts are arranged on the two sides of the middle part of the test system; and the rotating seat is arranged on the back surface of the upper part of the test system and is connected with the bracket through a rotating loading cylinder. The system can perform a model test on a block system, rock tunnel excavation, a tunnel chamber, a tunnel group, a side slope, shield excavation and building traversing, has a facade rotating loading function, effectively solves the technical problem that a strain field is required to have a wide uniformity range and a high uniformity degree in the model test, and can well simulate the stress environment of tunnels existing in a rock-soil body.

The invention relates to a production method of a homogeneous petroleum needle coke. The method comprises the steps of: (1) heating the raw material for needle coke production to a relatively low temperature of 400-480DEG C by a heating furnace, then leading the raw material into a coking tower to make the coking raw material form flowable intermediate phase liquid crystals; (2) when the low temperature fresh raw material charging stage is completed, gradually raising the temperature of a heating furnace outlet, and at the same time, charging the coking heating furnace with a fresh raw material and heavy distillate oil from a fractionating tower; and (3) when the materials in the coking tower reach a curing coking temperature, charging the coking heating furnace with the coking intermediate distillate oil generated in step (1), and simultaneously raising the coking heating furnace feed temperature to make the internal temperature of the coking tower reach 460-510DEG C, thus finishing high temperature curing of petroleum coke. The method provided in the invention can make the properties of needle coke at different parts inside the coking tower more uniform.

The invention relates to a guided tissue regeneration membrane, which comprises a compact coating and a loose coating, wherein the compact coating is composed of collagen-I or collagen-I composite hyaluronic acid; and the loose coating is composed of collagen-I or collagen-I composite calcium salt. A preparation method of the guided tissue regeneration membrane comprises the following steps of: preparing a collagen solution or a collagen and hyaluronic acid mixed solution by the use of acetic acid; injecting the solution into a self-made die, and drying it in the air to prepare the compact coating; injecting the collagen solution or a mixed liquor of the collagen solution and calcium salt onto the compact coating, and uniformly spreading; precooling the die at ultralow temperature, followed by freeze-drying to prepare the guided membrane with the compact coating and loose coating structure; carrying out vacuum high-temperature crosslinking and chemical crosslinking; and finally cleaning. The regeneration membrane has good histocompatibility and mechanical strength, low antigenicity and strong guided tissue regeneration capability. Its degradation rate in vivo is 3-8 months. The method is easy to operate, is suitable for automatic and continuous large-scale production, and solves the problems of large size of collagen membrane and material uniformity during industrial production.

The invention relates to the technical field of metallographical sample preparation and tissue observation. The invention relates to a tissue display method for ultra-supercritical steel with the advantages of high alloy content, high anti-corrosion and excellent oxidation resistance in particular. The technique steps of the method includes: firstly adopting a standard grinding-polishing method on an ultra-supercritical steel sample; then selecting a commonly used electrolyte to carry out electrolytic etching with high voltage and high current on the sample; finally combining a mechanical polishing method to finally display a clear original austenite crystal grain boundary. The invention can clearly, completely and independently display the original austenite crystal grain boundary of the ultra-supercritical steel; thereby being able to fully reflect the size and the distribution of the original austenite crystal grain and solving the problem of being harder to precisely assess the thickness and the uniformity of the ultra-supercritical steel tissue.

The invention relates to the field of food processing and discloses a method for making a stewed duck with bean sauce. In the invention, injection seasoning technology, vacuum massaging technology and compression marinating technology are integrated into a novel processing technique. The stewed duck with bean sauce made by the invention has the advantages of rich sauce fragrance, tender meat quality, proper elasticity and unique taste. The method overcomes the defects that the traditional stewed ducks with bean sauce cannot be pickled uniformly and the making period is too long, can effectively keep nutrient components in the duck, and can prolong the shelf life of the finished product. The raw materials and making parameters of the method are quantified, so the method can ensure the stable quality of products, facilitates the quality control, and has a prospect for large-scale industrialized production.

The invention discloses an automatic spraying machine for the inner wall and the outer wall of a steel pipe, and belongs to the field of steel pipe spraying equipment. The automatic spraying machine comprises an inner wall spraying mechanism, an outer wall spraying mechanism, an operation table and a rotating mechanism, wherein the inner wall spraying mechanism comprises a first spraying assembly,a second spraying assembly and a material moving assembly; the first spraying assembly and the second spraying assembly comprise an extending and feeding component and a rotating and spraying component; the material moving assembly comprises a lifting component, a material moving plate and a material moving component; and the lifting component is arranged at the top of the material moving plate.According to the automatic spraying machine disclosed by the invention, the inner wall spraying mechanism can extend to the inner part of the steel pipe and automatically perform the operation of uniform spraying on the inner wall of the steel pipe, the situation that the local inner wall of the steel pipe is not sprayed is avoided; and the operation of spraying can be automatically performed on the outer wall of the steel pipe through the outer wall spraying mechanism, so that the automation degree is high, and the situation that a worker manually performs the operation of spraying on the outer wall of the steel pipe is not needed.

The invention discloses a thermosetting resin composite facing material, which comprises a fiber reinforced layer, and a decorative layer and a basic layer which are respectively coated on the upper surface and the lower surface of the fiber reinforced layer. The decorative layer and the basic layer are made of functional thermosetting resin coating. By using the thermosetting resin composite facing material, the organic combination of a thermosetting resin coating layer and a fiber fabric layer is realized, and the obtained material has the advantages of high integrity, uniform performance, convenience in field laying, fewer gap and excellent performance. The excellent physical and chemical performance of thermosetting resin is inherited, the toughness of the material is increased, the material is more convenient and rapid to install and the application scope is wider. The invention additionally discloses a preparation method of the thermosetting resin composite facing material.

The invention discloses a continuous roller type quenching cooling system for steel plates. The continuous roller type quenching cooling system comprises a water spray system, a water supply system, a conveying roller system and a frame lifting system; the working regions of the cooling system orderly include a transition region, a high-pressure quenching region and a medium-pressure quenching region; in the high-pressure quenching region and the medium-pressure quenching region, nozzles and conveying rollers are symmetrically arranged up and down along the steel plates, and an upper nozzle and an upper roller are fixed on a movable upper frame, while a lower nozzle and a lower roller are fixed on a fixed frame. The continuous roller type quenching cooling system has the advantages that a roller type quenching manner is introduced into the quenching of ultra-thick steel plates, so that the problems of low cooling speed, poor cooling uniformity, poor batch production stability, unachievable manual intervention, and the like on quenching process of traditional immersion quenching are solved, and therefore, high-intensity uniformed quenching and high-efficiency stable production of the ultra-thick steel plates are achieved.

The invention relates to a classification method based on an improved DBSCAN-SMOTE algorithm for an intra-class unbalanced condition in data sample space processing, firstly, in a data sample set, which are belongs to boundary samples is judged, the boundary samples are divided into majority boundary samples and minority boundary samples, and cluster is performed on the boundary samples in a majority boundary sample space; a PSO algorithm is adopted to optimize oversampling rate of the boundary samples and safe samples in cluster, oversampling with different sampling rates is performed on minority boundary samples through an SMOTE algorithm; wherein the cluster is based on the improved DBSCAN algorithm, the algorithm can generate cluster of minority, perform oversampling in the sample cluster, and can fully resolve the problem of uneven distribution and data fragment or small disjunct in intra-class unbalance.

The invention discloses a refined rice processing method. The refined rice processing method comprises the following steps of rice screening, stone removal, magnetic separation and rice shelling, rice-bran separating, secondary shelling, thickness grading, moisture measurement and drying or atomizing, rice milling and white rice grading, rice cooling, polishing, color sorting, secondary white rice grading and moisture content detection, and packaging. The refined rice processing method comprises a plurality of impurity removal steps, and consequently, the purity of rice is guaranteed, the produced rice is high in purity, and the safety and the processing efficiency in the processing process are guaranteed. In the rice shelling and rice milling steps of the refined rice processing method, the material temperature is strictly controlled so that the material can be always kept in a relative low temperature appropriate environment, and the crack ratio and the broken rice rate can be reduced and the complete particle rate can be increased; the original faint scent of rice is maintained. The refined rice processing method is used for solving the problems of surface damage and uneven polishing in the rice polishing process by controlling the polishing water temperature and the dampening amount; as a result, the surfaces of all the rice grains polished can be kept smooth and clean, and the quality guarantee period of the rice can be prolonged.

The invention discloses a preparation method of superfine low-sodium alpha-alumina powder with high activity. Industrial aluminum hydroxide is taken as a raw material; alkali is removed and adsorbed by adding an acid; a compound mineralizer is added to calcine; the superfine low-sodium alpha-alumina powder with high activity, of which the mean grain size D50 is 0.2-1.0micron, is obtained by combining dry ball milling with wet ball milling; the sodium content is 0.01%-0.05%; and the content of the alpha phase is 97%-99%. The problems that the alpha-alumina is high in sodium content, uneven in grain size, poor in sintering activity and the like are solved, special requirements of high-performance ceramic, grinding and polishing materials and the like are met, and the method has the advantages of being simple in process, environmentally friendly, low in cost and the like, and is suitable for large-scale production.

The invention provides a pixel unit driving circuit, a pixel unit driving method, a pixel unit and a display device. The pixel unit driving circuit comprises a driving thin film transistor, a first switch element, a storage capacitor and a driving control unit, wherein the source of the driving thin film transistor is connected with a data wire through the first switch element; the drain of the driving thin film transistor is respectively connected with a positive electrode of an organic light emitting diode (OLED) and the low level output end of a driving power supply; the source of the driving thin film transistor is connected with the high level output end of the driving power supply through the driving control unit; the gate of the driving thin film transistor is connected with the drain of the driving thin film transistor through the driving control unit; and the driving control unit controls the driving thin film transistor to work in a saturated region and voltages of the gate and the source of the driving thin film transistor to compensate for threshold voltage by controlling charging and discharging of the storage capacitor. By the invention, the problems of non-uniform brightness of an OLED panel and brightness attenuation are solved.

The invention discloses an ultra-thick hard alloy, a preparation method and application thereof. The raw material of the ultra-thick hard alloy comprises the following components in percentage by weight: 10.0-10.5% of Co and the balance of WC. The preparation method comprises the following steps of pretreatment, raw material preparation, wet grinding, spray drying, compression moulding and sintering. According to the invention, technical conditions of each component and technical conditions of each step are selected preferentially, and common technical problems in the preparation of ultra-thick ally in China, such as non-even grains, poor anti-impact toughness and thermal fatigue resistance and too many pores. The ultra-thick hard ally has excellent thermal conductivity, impact toughness and thermal fatigue resistance, cross breaking strength is larger than or equal to 3,100Mpa, the hardness is 86-87HRA, the coercive force is 3.0-4.0KA/m, and WC average grain size is 5-6 microns.

The invention relates to the technical field of quenching media in a heat treatment link in bearing production, in particular to quenching oil for bearings and a preparation method thereof. Each 100 weight parts of quenching oil comprises the following components in part by weight: 79 to 98.45 parts of base oil, 1 to 8 parts of cooling accelerant, 0.05 to 5 parts of brightening agent and 0.5 to 8parts of antioxidant. The high-end class II base oil is taken as a raw material, and is added with the cooling accelerant, the high temperature antioxidant and the brightening agent in different proportions to form the quenching oil for the bearings; after the bearings are quenched by the quenching oil, the bearings are uniformly silvery, the structure and hardness of the bearings meet or exceed the requirements of national standard, and the deformation of the bearings subjected to heat treatment is reduced by 30 percent than a standard value; meanwhile, the service life of an oil product is 5 years, and the cost of the oil product used in a factory is reduced. Meanwhile, the quenching oil has the advantages of energy conservation and environmental friendliness, and can improve the quality of industrial products.

The invention relates to a method for producing bamboo dissolving pulp by pre-extracting hemicellulose and a product thereof; the method includes the following steps of: preparing bamboo wood: preparing the bamboo wood into bamboo sheets or bamboo filaments, and washing the bamboo sheets or bamboo filaments to remove impurity and dirt; prehydrolysis: the technical condition requiring solid-to-liquid ratio of 1:0.4-8.0, hydrolysis temperature of 100-200 DEG C, hydrolysis time of 15-240 minutes and a pH value of 2-5 at a hydrolysis end point; liquid solid separation and washing; collecting filtrate to produce extract; and preparing the dissolving pulp by residue alkaline process. The invention has the advantages that the performance index of the dissolving pulp meets the technical requirement of viscose fiber pulp, cellulose acetate, soluble cotton and cellulose ether dissolving pulp, and the method can extract most pentosane in bamboo wood by controlling the prehydrolysis technical condition, has extremely strong pertinence pertinency for the processing of the bamboo fiber materials, improves the reaction performance and evenness of the bamboo dissolving pulp, and reduces the cost for producing the bamboo dissolving pulp and pre-extracting the hemicellulose.

The invention relates to a magnesium alloy brazing filler metal containing a rare-earth element Er and a preparation method thereof, and belongs to the technical field of magnesium alloy connection. The magnesium alloy brazing filler metal comprises the following components in percentage by weight: 40-55% of Mg, 39-55% of Zn, 1-5% of Al and 0.1-1.5% of Er, wherein the Er is uniformly distributed.The preparation method comprises the steps of arranging alloy ingots in a preheat crucible, heating under protective atmosphere and mechanical stirring, fishing slag after the alloy ingots are completely fused, stopping heating brazing filler metal, stirring the brazing filler metal, applying ultrasonic waves on the fused brazing filler metal after the brazing filler metal is cooled to 380-600 DEG C, inserting an ultrasonic rod preheated to 300-700 DEG C into a brazing filler metal liquid level with the ultrasonic frequency of 18-22kHz, ultrasonic intensity of 0.5-5W/cm2 and the time of 10-150s, standing still after moving out the ultrasonic rod after ending, pouring the brazing filler metal liquid into a mould and air cooling to room temperature. The number of dendritic crystals of the obtained product is obviously reduced, crystal grains are refined, and the strength and the toughness are improved.

The invention provides an ore dressing method for lead-zinc-silver poly-metallic ores. Lead-silver concentrates and zinc concentrates are finally obtained through the steps of raw ore grinding, lead fast roughing, lead slow roughing, lead scavenging, lead fast concentration, lead slow concentration, zinc fast roughing, zinc slow roughing, zinc scavenging, zinc fast concentration and zinc slow concentration. The lead-zinc-silver poly-metallic ores sorted by the ore dressing method provided by the invention are good in sorting index and high in separation efficiency; the ore dressing method is a lead-zinc-silver ore dressing method which is stable, efficient, strong in adaptive capacity, good in sorting effect, high in comprehensive recovery index and low in production cost and is suitable for popularization and application.

The invention provides a sheet material hydro-mechanical deep drawing forming device and a sheet material hydro-mechanical deep drawing forming method using a magnetic medium to pressurize, belongs to the technical field of hydro-mechanical deep drawing, and solves the technical problems in a traditional sheet material hydraulic forming process that wrinkles are formed, the deformation uniformity is poor and the like, caused by the reason that overflowing pressure of a flange region is reduced, when a sealing ring is not used in order to realize overflowing and lubrication. A sealed hydraulic chamber formed by a concave die and a lower plunger piston is used for containing the magnetic medium; a convex die can penetrate through an edge pressing ring to drive a plate blank to move downwards to enter the sealed hydraulic chamber formed by the concave die and the lower plunger piston; a first coil is arranged on the periphery of the outer side of the flange region formed by the concave die and the edge pressing ring; a second coil is arranged on a pull rod of the lower plunger piston; and a magnetic control unit is used for controlling the sizes of magnetic fields generated by the first coil and the second coil. Firstly, a certain amount of the magnetic medium is poured into the hydraulic chamber and the edge pressing ring is moved downwards after the plate blank is placed; the viscosity and the pressure value of the magnetic mediums on a flange and in the hydraulic chamber are respectively adjusted and controlled through the magnetic fields; and a punching head is moved downwards until a plate piece is formed. The sheet material hydro-mechanical deep drawing device and the sheet material hydro-mechanical deep drawing method using the magnetic medium to pressurize are suitable for hydro-mechanical deep drawing formation of a sheet material.

The invention discloses an ultraviolet-heat dual-curing adhesive composition and a preparation method thereof. The ultraviolet dual-curing adhesive composition comprises the following components in percentage by mass: 20-50% of polyurethane modified epoxy monoacrylate, 10-25% of reactive diluent, 5-40% of conductive filler, 1-5% of silane coupling agent, 1-5% of photoinitiator and 1-5% of heat curing agent. The ultraviolet-heat dual-curing adhesive is high in curing speed; after a few seconds of ultraviolet irradiation, the acrylate double-bond group in the system can be quickly cured, so that the adhesive has preliminary bonding strength; and then by means of heating, the epoxy group is further subjected to crosslinking and curing according to a heat curing mechanism, thus further improving the bonding strength of the adhesive. The adhesive has high bonding strength and favorable conductivity, and can meet the bonding requirements of devices in electronic industry and the like. Besides, the adhesive disclosed by the invention is solventless, simple to operate, high in curing speed, high in bonding strength and suitable for batch production on a production line.

The invention relates to the field of machining equipment, in particular to a rotary small-size paint spraying chamber convenient to move. The rotary small-size paint spraying chamber comprises a workbench, a spray head, a storage box and a paint pump; the upper surface of the workbench is rotationally connected with a rotary disc; a plurality of clamping mechanisms are distributed on the upper surface of the rotary disc; a shell is detachably installed on the upper surface of the workbench, a screw rod is arranged in the shell, and the middle of the screw rod is sleeved with a slide block; areciprocating motor is fixedly connected to the upper surface of the shell, and the spray head is fixedly connected to the lower surface of the slide block; the outer side wall of the workbench is fixedly connected with the storage box, paint is poured into the storage box through an injection pipe, and the storage box is internally provided with the paint pump and a stirring mechanism; a to-be-machined workpiece is clamped through a clamping mechanism, the clamping speed is high, and the working efficiency is improved; and in the paint spraying process, the spray head does reciprocating motion, meanwhile, the to-be-machined workpiece is driven to rotate through the rotary disc, the paint is sprayed more uniformly, and the paint is stirred by stirring blades and prevented from settling.