18results about How to "Precise control of process parameters" patented technology

The invention relates to the technical field of rolling of high-temperature alloy ring forgings, particularly discloses a preparation method of an ultra-large-specification ring piece capable of resisting the temperature of 800 DEG C, and solves the problems that due to the fact that the size of the ring forgings is increased through alloy, cracking is prone to occurring, and the structure property control difficulty is large. The preparation method comprises the following steps that an alloy bar is cut and blanked according to the feeding weight of the ring forge piece, upsetting and punching are conducted on the bar after heat preservation treatment is conducted on the bar at the temperature of 1000-1150 DEG C, trestle chambering is conducted on a cake blank after heat preservation treatment is conducted on the cake blank at the temperature of 1000-1150 DEG C, rolling is conducted after heat preservation treatment is conducted on the cake blank at the temperature of 1000-1150 DEG C, and an alloy forge piece blank is obtained; and then standard heat treatment is conducted, and finally the GH4586 alloy ring forge piece with the diameter ranging from 400 mm to 1600 mm is obtained. According to the preparation process, the cracking tendency of the ring forge piece is greatly reduced, a uniform structure is obtained, and the comprehensive performance of the GH4586 large-size ring forge piece is guaranteed.

According to the system for machining the micro-hemispherical harmonic oscillator based on the carbon dioxide laser, the glass substrate is heated and softened through the carbon dioxide laser, and the energy utilization rate is higher. The horizontal displacement table drives the forming mold to move until the center coincides with the center of a laser spot, so that the positioning accuracy of a processing area is ensured; the diameter of the laser beam is adjusted through the beam expander, it is guaranteed that the diameter of a laser spot is larger than that of the to-be-machined micro-hemispherical harmonic oscillator, and the accuracy of a machining area is guaranteed. The forming mold and the glass substrate are driven to rotate through the rotating table, so that heat distribution of a processing area is relatively balanced, the size deviation of the micro-hemispherical harmonic oscillator caused by unbalanced heat distribution is avoided, and the processing quality of the micro-hemispherical harmonic oscillator is improved. Compared with a traditional method for softening the glass substrate through flame heating, all technological parameters in the machining process can be accurately controlled, the method has the advantages of being easy to operate and high in automation integration degree, and the micro-hemispherical harmonic oscillators high in forming precision and good in batch consistency can be machined.

The invention relates to a preparation method and application of an oxidation-resistant MXene material with a defect ordered hexagonal hole structure, and the preparation method comprises the following steps: mixing MAX phase Ti3AlC2 with hexagonal holes, CuCl2 and NaCl, loading into an alumina corundum square, covering with a NaCl salt bed boat, putting into a muffle furnace, and carrying out constant-temperature sintering at 820 DEG C in an air atmosphere for 3 hours; the method has the advantages that the process is simple and reasonable, a barrier for resisting attacks of oxygen molecules and water molecules is effectively constructed under the combined action of trace metal oxides on the surface of the MXene material, and the oxidation resistance of the MXene material is remarkably improved.

The invention discloses a ferric sodium pyrophosphate composite positive electrode material and a preparation method and application thereof. The composite positive electrode material is composed of ferric sodium phosphate pyrophosphate and carbon, the surface of the ferric sodium phosphate pyrophosphate is coated with the carbon, the molar ratio of sodium to iron to phosphorus is 4: (3-y): 4, y is larger than 0 and smaller than or equal to 0.5, the carbon content is 1-10 wt%, and the composite positive electrode material does not contain associated phases. The preparation method comprises the following steps: adding water into an iron source, a sodium source, a phosphorus source and a carbon source to prepare a mixed solution, and drying to obtain precursor powder; sintering under the protection of inert gas to form a semi-finished body, carrying out ball milling or sand milling on the semi-finished body, and then carrying out spray drying; and finally sintering under the protection of argon or nitrogen to obtain a finished product. The raw materials are cheap and easy to obtain, process parameters are accurately controlled through a two-step heat treatment method, the compaction degree and the compaction degree of the material are remarkably improved, the electrochemical performance is optimized, and the preparation method has important application value in the field of sodium ion secondary batteries.

This invention relates to an integrated process apparatus and method for degumming Apocynum venetum, comprising a raw material pretreatment unit, a microwave-ultrasound synergistic pretreatment unit, a composite enzyme gradient degumming unit, a post-treatment unit, and an enzymatic hydrolysis product recovery unit connected in sequence. Each unit is connected via a sealed conveying mechanism. The invention also includes a central control system electrically connected to each unit to regulate its process parameters. A waste liquid conveying pipeline connects the composite enzyme gradient degumming unit and the enzymatic hydrolysis product recovery unit. The output of the enzymatic hydrolysis product recovery unit is connected to the composite enzyme gradient degumming unit via a reflux pipeline, enabling the recycling of biological enzymes. The method of this invention is simple, convenient to operate, and achieves good degumming effect. It yields high-quality Apocynum venetum fiber with high extraction rate, retains a large number of natural active ingredients, and realizes the high-value utilization of Apocynum venetum fiber.

This invention discloses a herbal skin-nourishing cream based on bamboo shoot extract as a solvent and its preparation method. The herbal skin-nourishing cream comprises an oil phase: petrolatum, squalane, dioctyl ether, glyceryl stearate, PEG-100 stearate, hydroxypinazone retinate, natural emulsifier, beeswax, tocopherol, cyclopentamethoxysiloxane, and oil-soluble fragrance; ethylhexylglycerin, niacinamide, and 10% citric acid are used to adjust the pH to 6.0-6.3. The aqueous phase comprises: pentylene glycol, panthenol, capryloyl hydroxamic acid, sodium hyaluronate, xanthan gum, dipotassium glycyrrhizate, sodium chloride, phenoxyethanol, p-hydroxyacetophenone, cellulose gum, and disodium EDTA; the balance is bamboo shoot extract. The average particle size of this invention is 1-5 μm, and the viscosity is 5000-8000 mPa·s. It has undergone heat resistance, cold resistance, centrifugal stability tests, and preservative challenges, demonstrating no stratification or deterioration. Human patch tests have proven its suitability for sensitive skin.

The application relates to the technical field of sodium ion battery negative electrode materials, in particular to a closed pore directional regulation and control bamboo-based hard carbon negative electrode material and a preparation method thereof. The method is used for preparing the bamboo-based hard carbon negative electrode material through bamboo material selection and pretreatment, three-stage gradient pre-oxidation, plasma activation, molten salt auxiliary step-by-step carbonization, deep acid pickling purification, and grading ball milling and surface carbonization coating steps, accurately regulates and controls a closed pore structure, reduces defects, improves a carbon yield and batch consistency, is applied to a sodium ion battery, and realizes synchronous improvement of a first circle coulomb efficiency, sodium storage capacity, rate performance and cycle stability.

The invention relates to a small and convenient oxygen isotope nuclear reaction target manufacturing process and device, a reaction target lining and a sputtering target material are arranged in a vacuum chamber of a magnetron sputtering target manufacturing device, a sputtering electric field is provided by adopting a radio frequency power supply, and the flow of argon and oxygen filled into the vacuum chamber and the pressure in the vacuum chamber are controlled; the chromium oxide film layer is sputtered on the reaction target lining at a stable rate to form a film, and the oxygen isotope nuclear reaction target is prepared. The content of nitrogen in the chromium oxide film layer prepared by the process is extremely low, the abundance of oxygen isotope reaches 70%, and the applicability of the film layer in nuclear reaction cross section measurement is greatly enhanced. The method has the remarkable advantages of efficient coating, excellent film quality, simplicity and convenience in operation, environment friendliness, energy conservation and the like. The magnetron sputtering device improves the sputtering efficiency and the power efficiency through the synergistic effect of a magnetic field and an electric field, and ensures uniform deposition and strong adhesive force of the film. The device is compact in structure, flexibly adapts to various target materials and process requirements, reduces environmental pollution and conforms to the green production concept.

This invention discloses a method for extracting high-purity ammonium tetramolybdate from a waste oil hydrogenation catalyst. S1, Primary ammonia dissolution: 28% ammonia water, water, and molybdenum acid extracted from the waste oil hydrogenation catalyst are added to a primary dissolution vessel. The mixture is stirred until the molybdenum acid is fully dissolved. The reaction time is controlled to 1 hour. The pH of the dissolved solution is 7-8. The molybdenum acid has a water content of 35% and a Mo content of 46-50%. This invention employs a stepwise deep impurity removal process of "magnesium chloride for phosphorus removal + 231 resin for vanadium removal," and sets up dual phosphorus and vanadium content detection to ensure that phosphorus <0.01g / L and vanadium <0.01g / L before proceeding to subsequent processes. The molybdenum-vanadium separation coefficient of 231 resin is much higher than that of ordinary resin, effectively avoiding impurity entrainment.

The application relates to the technical field of inductance manufacturing equipment, in particular to an integrated forming and welding device for inductance coil pins, which comprises a cabinet, a welding machine assembly is arranged in the cabinet, an operation platform is arranged at the top of the cabinet, a coil positioning assembly is arranged on the operation platform, symmetrically arranged mounting seats are arranged on the operation platform, coil terminal fixing assemblies are correspondingly arranged on the two mounting seats, coil terminal forming assemblies are slidably connected to the coil terminal fixing assemblies and arranged on the mounting seats, upper electrode assemblies of the welding machine assembly are fixedly arranged on the coil terminal forming assemblies, and lower electrode assemblies corresponding to the upper electrode assemblies are fixedly arranged on the coil terminal fixing assemblies; pin standby material assemblies are arranged on the two mounting seats and correspond to the coil terminal fixing assemblies. The application realizes integrated and accurate work of coil positioning, terminal forming, pin feeding and welding, is favorable for reducing process circulation time, improving single-process processing efficiency and reducing a production cycle.

The invention discloses a glass fiber reinforced polyurethane energy-saving window frame profile processing technology which comprises the following steps: mixing and stirring polyether polyol, silica powder and hollow glass beads, and adding a catalyst and isocyanate; the continuous glass fibers are arranged through a yarn guide frame, impregnated with resin and adhered to the chopped glass fibers to enter a mold preforming area, forming is conducted through pultrusion equipment, and the profile is cut and sprayed after being cooled. According to the invention, high strength, low thermal conductivity and excellent stability of the profile are realized through optimized process parameters, and the profile is suitable for large-scale production of energy-saving window frames of buildings.

This utility model relates to the field of busbar technology, and particularly to a high-temperature resistant insulating busbar. A high-temperature resistant insulating busbar includes a busbar conductor, the outer surface of which is coated with ceramic silicone, the outer surface of which is coated with fiberglass cloth or a polyimide film, and the outer surface of which is coated with a polyamide insulating layer. This utility model utilizes the complementary properties of polyamide and ceramic silicone to solve the problem of decreased mechanical properties and loss of insulation performance of traditional materials at high temperatures. Through the development of special pretreatment and composite processes, the interfacial bonding force between polyamide and ceramic silicone is enhanced, preventing delamination and peeling under high-temperature thermal stress. This achieves a uniform and dense coating of the insulating layer on the busbar surface, eliminating defects such as bubbles and impurities, and ensuring that the busbar still possesses reliable insulation performance and mechanical strength under high-temperature environments.

The invention relates to the technical field of plant effective component extraction, and discloses a method for extracting artemisinin through enzymolysis pretreatment, which comprises the steps of raw material pretreatment, composite enzymolysis pretreatment, ultrasonic-assisted extraction, impurity removal and concentration, purification and crystallization, and recrystallization and refining. A compound enzyme system composed of cellulase, hemicellulase and pectinase is adopted to conduct enzymolysis on artemisia annua powder, cell wall structures are destroyed to promote artemisinin release, ultrasonic-assisted extraction is combined to strengthen the extraction effect, and the product purity is improved through chitosan impurity removal, silica gel chromatography and two times of crystallization. The method is simple in process, environmentally friendly and energy-saving, effectively solves the problems that a traditional extraction method is low in extraction rate, insufficient in purity and high in cost, is suitable for large-scale industrial production, and has high practical value and industrialization prospects.

The invention provides a method and equipment for continuously producing 1, 2, 4-acid oxygen bodies. The preparation method comprises the following steps: a step of obtaining 1, 2, 4-acid slurry, wherein the 1, 2, 4-acid slurry comprises 1, 2, 4-acid, a catalyst and a solvent; obtaining a sodium nitrite solution; a step of obtaining a bottoming material: in a continuous flow reaction device, mixing the 1, 2, 4-acid slurry with a sodium nitrite solution, and carrying out a diazotization reaction to obtain the bottoming material; and obtaining a continuous reaction product: continuously conveying the 1, 2, 4-acid slurry and a sodium nitrite solution into the continuous flow reaction device for diazotization reaction to obtain the continuous reaction product. According to the method for continuously producing the 1, 2, 4-oxometalate, the pipeline reactor is used as a reactor for producing the 1, 2, 4-oxometalate, so that the liquid holdup is reduced, and the production risk and the operation cost are further reduced.

The invention relates to the technical field of high polymer materials, and particularly discloses an air duct cover plate injection molding part and a preparation method thereof. The invention discloses an air duct cover plate injection molding part which comprises the following components: 70-90 parts of HIPS (High Impact Polystyrene) resin, 3-10 parts of master batch A and 10-17 parts of master batch B, the master batch A is prepared from the following components in parts by weight: 20-30 parts of PET, 5-8 parts of a toughening agent and 1-2 parts of an antioxidant; the master batch B is prepared from the following components: 20 to 30 parts of PET (Polyethylene Terephthalate), 8 to 15 parts of a lubricant and 8 to 15 parts of modified montmorillonite. By utilizing the technical scheme provided by the invention, the prepared air duct cover plate injection molding part material has excellent impact resistance, excellent ethanol resistance and excellent grease resistance, and is particularly suitable for ventilation systems of automobiles and various equipment.

The invention provides a double-sided polishing method, double-sided polishing equipment and a silicon wafer, and the method comprises the steps: setting parameters, controlling the rotation speed of a bearing disc and the rotation speed of an upper fixed disc and a lower fixed disc, enabling the removal amount of the front surface of the silicon wafer to be greater than the removal amount of the back surface of the silicon wafer, and enabling the sum of the removal amount of the front surface of the silicon wafer and the removal amount of the back surface of the silicon wafer to be a target removal amount. According to the double-sided polishing method, the double-sided polishing equipment and the silicon wafer, the surface particle level of the silicon wafer obtained after polishing can be improved.

The utility model belongs to the technical field of sintering application, and particularly discloses a continuous type rapid hot pressing sintering device which is composed of an electric cylinder, an upper cross beam, an insulating gasket, a set of conductive copper bars, an automatic powder filling assembly, a middle die assembly, a gravity sensor, two sets of limiting rods, a pressing head fixing base, a lower cross beam, two sets of stand columns and the like. The sintering furnace has the beneficial effects that the sintering time can be remarkably shortened and the sintering efficiency can be improved by combining the effects of high temperature and high pressure, so that the requirement of large-scale production is met; by optimizing the heating and sintering modes, unnecessary energy loss is reduced, the overall energy consumption is reduced, and the current energy-saving and environment-friendly development trend is met; the sintering process can be ensured to be uniform and stable, so that the compactness, strength, wear resistance and other performance indexes of the product are improved; the sintering process is simplified, equipment requirements are reduced, the automation degree of a production line is improved, and the production cost is reduced.

The invention discloses low-cost high-corrosion-resisting steel and a preparation method thereof, belongs to the technical field of corrosion-resisting steel, and solves the problems that the corrosion-resisting steel in the prior art is high in high-cost element content, high in cost and complex in preparation process. The low-cost high-corrosion-resistance steel comprises the following components in percentage by mass: less than or equal to 0.08% of C, 0.25%-0.35% of Si, 0.60%-0.80% of Mn, 1.0%-1.5% of Ni, 0.4%-0.6% of Cr, 0.8%-1.3% of Cu and the balance of Fe and other inevitable impurities. The low-cost high-corrosion-resistance steel is low in cost and excellent in mechanical property and corrosion resistance.