18results about How to "Improve batch consistency" patented technology

The invention belongs to the technical field of bar production, and particularly relates to a production method of a steel bar for a heavy-load automobile half axle, and the steel bar comprises the following chemical components in percentage by mass: 0.39-0.42% of C, 0.25-0.35% of Si, 1.45-1.70% of Mn, less than or equal to 0.013% of P, less than or equal to 0.006% of S, less than or equal to 0.25% of Cr, less than or equal to 0.25% of Ni, 0.15-0.20% of Mo, 0.06-0.10% of V, less than or equal to 0.15% of Cu and the balance of Fe and inevitable impurities. The method has the advantages that high-performance, high-purity and low-cost production of the steel bar for the heavy-duty automobile half shaft is realized through green short-process production of'ecological electric furnace + LF + RH + continuous casting 'in combination with low-carbon component design and a controlled rolling and controlled cooling process. And macrostructures and non-metallic inclusions of the finished steel meet the requirements of high-end products.

This invention discloses a highly filled modified PP masterbatch and its preparation method, belonging to the field of polymer material modification technology. The masterbatch, by weight, consists of the following components: 25-30 parts polypropylene, 60-65 parts heavy calcium carbonate, 2-3 parts compatibilizer, 1-2 parts toughening agent, 0.3-0.5 parts compounded antioxidant, 0.5-1.0 parts lubricant, and 0.2-0.3 parts dispersant. This invention achieves a high-filling system with ≥60% calcium carbonate filling through synergistic optimization of the raw material formulation and precise control of the preparation process. This effectively solves the industry pain points of traditional highly filled modified PP masterbatches, such as filler agglomeration, precipitous decline in mechanical properties, and poor processing stability. The finished masterbatch meets national and industry acceptance standards for industrial equipment shells, automotive interior and exterior trim, and functional parts. The raw material cost is reduced by 15-25% compared to traditional modified PP masterbatches. The preparation process of this invention is simple and can achieve stable mass production using existing general-purpose modification equipment. The product qualification rate is ≥98%, demonstrating excellent economic benefits and broad application prospects.

This invention relates to a processing method for soft and tender abalone with a soft, glutinous texture, comprising the following steps: S1, pre-treating fresh abalone to obtain pre-treated abalone meat; S2, placing the pre-treated abalone meat under hot air conditions, first heating it to a first temperature and holding it at that temperature, then raising the temperature to a second temperature and holding it at that temperature, to obtain enzyme-inactivated abalone meat; the first temperature does not exceed 55°C, and the second temperature is at least 10°C higher than the first temperature; S3, enzymatically hydrolyzing the enzyme-inactivated abalone meat with a protease, and after inspection and packaging, obtaining soft and glutinous abalone with a soft, glutinous texture. This invention, through gradient temperature inactivation of enzymes and three-parameter synergistic regulation of enzymatic hydrolysis, produces soft and glutinous abalone with a sticky adductor muscle adhesiveness >25N, a soft, glutinous texture uniformity >90%, and a 100% success rate in achieving the desired soft and glutinous texture. The method of this invention is simple and can achieve large-scale and continuous production. It is suitable for the industrial processing of high-end ready-to-eat soft-boiled abalone, pre-cooked soft-boiled abalone, and other products, significantly improving the added value and market competitiveness of abalone products.

The application relates to the technical field of inorganic chemical crystallization process control, and discloses an automatic control system and method for lithium carbonate crystallization particle size and purity regulation, wherein the system comprises: a data acquisition module configured to acquire multi-source heterogeneous data; a data preprocessing module configured to perform a preprocessing operation on the multi-source heterogeneous data and output a unified time sequence feature vector; a deep learning and prediction module configured to process the unified time sequence feature vector based on a multi-modal fusion deep learning architecture and output a prediction result; and a DCS automatic control module configured to compare the prediction result with a preset target threshold, generate a regulation instruction according to a priority, adjust a crystallization process operation parameter of a reaction kettle, and form a closed-loop control. Through online real-time monitoring, deep learning modeling and DCS closed-loop control, the application can realize accurate regulation of particle size, peritectic inhibition, early prediction of purity and stable standard reaching.

The invention is suitable for the technical field of areca nut processing, and provides a device for removing overflowing marinating materials of areca nuts. The device comprises the feeding mechanism, the transferring mechanism, the cutting mechanism and the discharging mechanism, transportation, cutting and transferring of the marinated areca nuts are achieved through an automatic process, manual scraping operation is effectively replaced, the labor intensity of workers is reduced, and the production efficiency is improved. The efficiency of cutting the overflowing marinating materials is improved, the scraping uniformity is ensured, the product pollution risk is reduced, and the batch consistency is improved.

The present application relates to the technical field of resin, in particular to a conductive polypropylene composite material and a preparation method thereof.In view of the problems of poor processing fluidity, easy shear damage of conductive network and deterioration of mechanical properties caused by high filling of conductive filler in the prior art, the present application realizes the low volume resistivity, high melt flow rate and excellent mechanical toughness by the solid phase pre-coating technology, and effectively balances the conductivity, processability and strength.

The invention relates to the technical field of ceramic part cleaning, in particular to a cleaning device and method for high-cleanliness ceramic parts, the cleaning device comprises a cleaning box and a sealing cover hinged to the cleaning box, and a semi-enclosed electric heating wire is arranged on the side, away from a control panel, in the cleaning box; the cleaning assembly is arranged on the rotating frame, and the cleaning assembly comprises a first cleaning cavity and a second cleaning cavity which are located on the rotating frame; and the switching assembly is arranged below the rotating frame, and the switching assembly comprises a driving module and a placing module. Compared with the prior art, the placement module is forced to form a stable inclination angle when moving to the warping plate, and in cooperation with inclined jet flow of the second water outlet nozzle, cleaning liquid sweeps the arc-shaped outer surface and the side wall / transition fillet area at a more appropriate incidence angle; meanwhile, the inclined posture is beneficial to rapid discharge of a liquid film, and the common accumulated liquid, water pocket and water mark residual risks caused by horizontal placement are reduced.

The application relates to the technical field of new energy safety monitoring and microelectronic sensor technology, and particularly relates to a hydrogen-sensitive sensor material and a preparation method and use method thereof, the preparation method comprising the following steps: adding tungsten source, palladium source and silver source into a mixed solvent of dimethylformamide and ethanol, then adding a high-molecular binder, continuously stirring at normal temperature until the solute is fully dispersed and uniform, and obtaining a precursor solution; loading the precursor solution into a syringe with a stainless steel nozzle, spraying the nanoscale fiber bundle from the syringe in an electrostatic spinning machine to a receiving plate covered with aluminum foil paper; collecting the nanoscale fiber bundle on the receiving plate, placing and drying, then placing in a muffle furnace, and performing programmed temperature calcination in an air atmosphere to obtain Pd-Ag / WO3 nanofiber powder; and dissolving the Pd-Ag / WO3 nanofiber powder with ethanol to complete the preparation. The application greatly simplifies the preparation process and guarantees high batch consistency.

The invention provides a size precision regulation and control method and system for micro-jet 3D printing, and the method comprises the steps: obtaining technological parameters and corresponding formed part parameters, and constructing a collaborative optimization model according to a mapping relation between the technological parameters and the corresponding formed part parameters; a target structure model is obtained, the corresponding printing powder particle size is determined, the layering thickness is determined according to the target structure model and the printing powder particle size, and jet parameters and density parameters are determined through the collaborative optimization model based on the printing powder particle size and the layering thickness; according to the particle size of the printing powder, the layering thickness, the density parameter, the injection parameter and the target structure model, a local shrinkage rate is determined through a preset shrinkage rate prediction function so as to determine a corresponding local reverse compensation coefficient, and then according to the local reverse compensation coefficient, local size adjustment is conducted on the target structure model to determine a correction model; and printing according to the process parameters and the correction model. The problem that in the prior art, a high-universality, high-precision and efficient size precision regulation and control method for micro-jet 3D printing is lacked is solved.

The application relates to an atomized liquid and a preparation method thereof and relates to the technical field of atomized liquids. The atomized liquid comprises propylene glycol, vegetable glycerin, nicotine salt, sorbitol, erythritol, flavor essence, cooling agent, sweetener and pH regulator. The sorbitol and the erythritol synergize in a specific weight part range to construct a hydrogen bond network, so that the system viscosity is improved and the aroma release is optimized. The application can effectively solve the problems of oil leakage, unstable suction number and aroma attenuation caused by low-viscosity flavor essence without relying on high-content vegetable glycerin, and the flavor is fresh and transparent.

This invention discloses a 96-channel peptide synthesizer and its synthesis method, comprising a reaction system, a solvent management system, and a control system. The reaction system includes a housing, a reaction rack, reactors, a dispensing tower, and amino acid bottles. The housing is equipped with partitions to achieve functional zoning. The reaction rack houses 96 detachable reactors with oscillating stirring capabilities. The amino acid bottles feature quick-release pull-rings and cylinder-operated metering structures. The dispensing tower employs staggered operation for synchronous liquid supply. The solvent management system uses positive nitrogen pressure as its power source and achieves precise solvent delivery through a dispensing pump, transfer bottle, and solvent valve. The control system is fully automated via computer control, capable of monitoring channel status, editing process parameters, and supporting mode switching. This invention achieves high-throughput, automated peptide synthesis with 96 channels, offering advantages such as convenient operation and high synthesis efficiency.

The application relates to the ship manufacturing technical field, in particular to a glass fiber reinforced plastic surface treatment method, a glass fiber reinforced plastic product and a glass fiber reinforced plastic cementing component. The method comprises the following steps: S1, demarcating a target area to be cemented on the inner wall of a mold cavity, and laying an inorganic fiber layer with inherent regular fiber texture on the target area; and S2, preparing a glass fiber reinforced plastic base body through hand laying of the mold, and stripping the inorganic fiber layer after curing and demolding, so as to obtain a glass fiber reinforced plastic blank with a micro-concave-rough surface structure. The scheme provided in the application can prepare a micro-concave-rough surface structure with controllable precision through the inorganic fiber layer, greatly improves the batch quality stability of the glass fiber reinforced plastic cementing from the process end, has no dust pollution in the whole process, and has the advantages of low equipment investment threshold and small manpower dependence.

The invention discloses a core-shell structure mineralizer modification-based photocuring 3D printing aluminum-based ceramic core and a preparation method thereof. The aluminum-based ceramic core comprises the following substances in percentage by weight: 65-75% of aluminum-based ceramic powder, 5-15% of a core-shell structure mineralizer component and 15-25% of a photosensitive resin component. The preparation method comprises the following steps: preparing aluminum-based ceramic core slurry, and vacuumizing the aluminum-based ceramic core slurry; injecting the aluminum-based ceramic core slurry into a trough of 3D printing equipment, and printing an aluminum-based ceramic core blank; the aluminum-based ceramic core green body is subjected to ultrasonic cleaning and drying treatment; and the aluminum-based ceramic core blank is subjected to degreasing treatment and sintering treatment, and the photocuring 3D printing aluminum-based ceramic core based on core-shell structure mineralizer modification is prepared. According to the method, the sintering temperature of the 3D printing aluminum-based ceramic core blank can be effectively adjusted, generation of interlayer cracks in the degreasing and sintering process is reduced, and the aluminum-based ceramic core with excellent comprehensive performance is obtained.

The invention discloses low-molecular-weight high-activity polyisobutene and a preparation method thereof, and belongs to the field of preparation of high-molecular compounds. According to the preparation method, the low-molecular-weight and high-activity polyisobutene is prepared through catalysis of a simple initiator, a co-initiator and a third component system. And preparing the low-molecular-weight and high-activity polyisobutene with the external olefin proportion of 90% at a relatively high temperature (-30 DEG C to 0 DEG C) by using a simple and easily available initiator and Lewis acid with relatively weak corrosion to equipment as a co-initiator and regulating and controlling a three-component catalytic system and optimizing a process flow. The preparation method comprises the following steps: preparing the low-molecular-weight and high-activity polyisobutene with the external olefin proportion of 90% at a relatively high temperature (-30 DEG C to 0 DEG C).

This invention belongs to the field of bioengineering technology, specifically disclosing the application of xylanase AlXyn10A in the degradation of xylans containing complex side chains. The amino acid sequence of the xylanase AlXyn10A provided by this invention is shown in SEQ ID NO:1, and this enzyme is derived from *Aspergillus foetida*. Aspergillus leporis The specific activity of the pure enzyme reached 306.4 U / mg, and Co 2+ It exhibits significant activation and excellent hydrolytic performance. Structural analysis shows that this xylanase can simultaneously recognize both FAX3 and MeGA substrates, effectively degrading xylans with complex side chains. It has broad application prospects in various fields such as food, agricultural waste resource utilization, textiles, papermaking, and environmental remediation. Applying this xylanase to the pear juice preparation process can significantly increase the juice yield and reducing sugar content while effectively preserving ascorbic acid.

The present application relates to a kind of preparation methods of TC8-1 titanium alloy disc forgings, belong to titanium alloy forging technical field, at least solve the uniformity of the organization of disc forging prepared by existing method and batch consistency is insufficient;Small specification disc forging forming difficulty is big;One of the problems of unreasonable heat treatment process and strength toughness matching.It includes using TC8-1 titanium alloy bar as raw material, according to its height-diameter ratio, selects blanking mode, obtains disc forging blank;According to the thickness of disc forging blank, select disc forging forming mode, obtain disc forging blank after forging;Disc forging blank is subjected to double isothermal annealing treatment, and titanium alloy disc forging is obtained;Double isothermal annealing treatment includes heating disc forging blank to the first heavy annealing temperature and holding, converter to the second heavy annealing temperature and holding, fan cooling is used in converter process, and converter time is ≤10min.The TC8-1 titanium alloy disc forging prepared by the present application has high uniformity of organization and batch consistency.

The utility model discloses an electrode leading-out structure of a ceramic flat membrane type pressure sensor, which comprises a lead, a through hole, a ceramic base, an elastic membrane and an elastic membrane electrode, the ceramic base is provided with a metalized through hole, and the inner wall of the through hole is coated with palladium-silver paste to form a palladium-silver conductor; printing and curing medium-temperature silver paste on the bonding surface of the elastic membrane electrode and the metalized through hole for conducting the elastic membrane electrode to the metalized through hole; and coating soldering paste on the bonding pad connected with the through hole of the base, inserting and fixing the lead into the soldering paste of the bonding pad, welding the lead by using a reflow soldering furnace, and leading out the electrode of the elastic membrane. According to the utility model, a low-resistance path is realized through metallization of the through holes, and the flexible buffer of the silver paste is combined, so that the problem of stress cracking caused by mismatching of thermal expansion coefficients is solved, the problem of low reliability of traditional point elargol welding is solved, and the long-term stability and the anti-fatigue performance of the sensor are improved.

This application discloses a manufacturing method for high-precision needle roller bearings used in arc-face cam indexing mechanisms, belonging to the field of precision bearing manufacturing technology. This invention achieves metallographic streamline orientation control of rollers and bushings through closed-die forging, matches the component matrix properties through co-furnace heat treatment, achieves sub-micron level concentricity control through synchronous pairing grinding with dual grinding heads, eliminates batch precision deviations through group selection and assembly, and ensures indexing accuracy stability through working condition simulation and running-in calibration. The resulting full-needle roller bearing has an overall rotational concentricity ≤0.8μm. When applied to arc-face cam indexing mechanisms, the rotary table indexing and repeatability accuracy error is ≤1.8 arcseconds, the first-pass yield is ≥98.5%, and the service life is extended by more than 40%. This completely solves the industry pain points of insufficient concentricity, large indexing errors, and poor precision retention in existing needle roller bearings, and is suitable for high-end CNC machining, precision automation equipment, and other fields.