26results about How to "Avoid oxidation reactions" patented technology

The utility model discloses a latex tank with a batching mechanism for condom production. The latex tank comprises a latex storage tank, a material passing pipe tightly connected to the inner wall of the bottom end of the latex storage tank, a regulating valve arranged on the material passing pipe, the batching mechanism connected to one end of the material passing pipe, a flow meter connected with the batching mechanism and a transfer tank, the bottom supporting mechanism is arranged at the bottom end of the transfer tank; the air exhaust mechanism is positioned on one side of the transfer tank; the batching mechanism comprises two arc-shaped supports, a hinge connected between the two arc-shaped supports, and an L-shaped extension plate fixedly connected to the outer wall of one side of each arc-shaped support. The liquid latex cannot be in contact with outside air, so that oxidation reaction is avoided, meanwhile, the solidified latex can be conveniently cleaned, and the smooth passing effect of the liquid latex is guaranteed.

This invention discloses a method for preparing high-purity oxygen-free copper, relating to the field of metallurgical technology. The method includes multi-stage electrolytic refining, gradient-heating vacuum melting, inert gas-protected refining, electron beam melting, hydrogen plasma arc melting, directional solidification, and post-treatment steps. The multi-stage electrolytic refining utilizes a specific component electrolyte and periodically commutated current; vacuum melting is combined with bidirectional electromagnetic stirring; inert gas-protected refining is combined with a gradient reduction composite covering agent; electron beam and hydrogen plasma arc melting achieve deep purification and deoxidation; and directional solidification and two-stage annealing ensure product performance. The high-purity oxygen-free copper prepared by this invention has a conductivity of 102.3% IACS, a copper content ≥99.9999%, and an oxygen content <1.0 ppm. It exhibits high purity, low oxygen content, and excellent conductivity. The process is stable and controllable, making it suitable for high-end electronics applications.

The application discloses a WC+TiC particle reinforced high-entropy alloy coating and a preparation method thereof, and belongs to the field of coating preparation. The coating comprises a bottom layer, and the chemical components and mass percentages of the bottom layer are as follows: carbon: 0.1-0.5%, boron: 1-1.3%, chromium: 19-21%, nickel: 21-24%, silicon: 1-1.5%, molybdenum: 8-10%, cobalt: 22-24%, sulfur: 0.005-0.015%, phosphorus: 0.015-0.045%, and the balance is iron and inevitable impurities; and a working layer, and the chemical components and mass percentages of the working layer are as follows: WC: 15-25%, X: 1.5-4.5%, and the balance of components and the proportion between the components are the same as those of the bottom layer, wherein the X is TiC particles coated with Ni on the surface. The method is used for preparing the coating, and compared with a conventional coating, can effectively improve the wear resistance and corrosion resistance of the coating, and prolong the service life of equipment.

The application relates to a preparation method and a phased application method of an aging SBS modified asphalt regenerant with diffusion and enhancement, and belongs to the technical field of road engineering materials and waste asphalt regeneration. A first agent and a second agent are used in stages, the first agent comprises naphthenic base oil and / or aromatic base regenerative oil, epoxy vegetable oil and / or fatty acid ester, a surface active diffusion promoter, a small molecule compatibilizer and an antioxidant, the second agent comprises maleic anhydride grafted SBS and / or maleic anhydride grafted SEBS, liquid rubber and / or hydroxyl-terminated polybutadiene, an epoxy reactive compatibilizer, tackifying resin, a non-amine type interface stabilizing aid and a complexing aid of a hindered amine light stabilizer and an ultraviolet absorber. The application can solve the problems that softening and enhancement of a traditional single-dose regenerant are difficult to be considered, the two-component synchronous adding mode is insufficient in stage control, aging SBS modified asphalt diffusion softening is insufficient, SBS elastic network repair is uneven and the durability after regeneration is insufficient.

The present application relates to the technical field of spinning machine, especially to a magnesium alloy hot spinning three-wheel powerful spinning machine spinning control method and system, the method comprises the following steps: workpiece installation in place, start heating mechanism and oxidation protection mechanism, reach temperature target value after heat preservation; Spindle mechanism rotation, hot spinning three-wheel powerful spinning machine gradually press to workpiece, pressure sensor real-time collection radial cylinder load force information, temperature sensor real-time collection workpiece surface actual temperature information, displacement sensor real-time collection radial cylinder piston rod radial displacement information; Real-time calculation servo valve opening, intermediate frequency furnace heating compensation power, the flow required by oxidation protection mechanism inert gas; And control according to the calculated value, unload workpiece after reaching the target spinning pressure. The method and system provided by the present application can realize high-temperature accurate heating and oxidation protection of the workpiece, and the production efficiency and the yield are significantly improved.

The utility model discloses a PE-HM stiffened perforated corrugated pipe, and particularly relates to the technical field of corrugated pipes, the PE-HM stiffened perforated corrugated pipe comprises a corrugated pipe main body, the outer side of the corrugated pipe main body is sleeved with a winding protection pipe, the top of the inner wall of the winding protection pipe is fixedly connected with a plurality of vertical supporting ribs, and the front side surfaces of the vertical supporting ribs are provided with a plurality of fixing holes; a winding pipe inner plate is fixedly connected between the winding protection pipe and the outer wall of the corrugated pipe body, and two reinforcing ribs are fixedly connected between the winding pipe inner plate and the vertical supporting ribs. Local compression resistance and deformation resistance are greatly improved, meanwhile, the first supporting rib and the second supporting rib penetrate through a middle hole formed by the corrugated pipe body, bending modulus can be effectively released, when the pipe is pulled or pressed, internal stress distribution is more reasonable, tensile resistance is remarkably improved, the pipe can better adapt to complex underground environments and external loads, and the service life of the pipe is prolonged. And the engineering scene with the high requirement for the mechanical property of the pipe is met.

A kind of high-speed kneader for producing PP automobile modified material, it is related to the technical field of kneader, solve the problem that the structure of paddle is single in prior art, it is difficult to consider high-strength shearing and gentle mixing.The mixing cavity is connected with the discharge cavity at the bottom end, and the discharge cavity is provided with a discharge channel at the lower end;The top of the mixing cavity is connected with an electrical control box, and the top of the mixing cavity is also provided with a driving motor, a rotating shaft is coaxially connected in the mixing cavity, a combination stirring blade is fixed on the periphery of the rotating shaft, the combination stirring blade includes shear blade, conveying blade and cleaning blade, the shear blade, conveying blade and cleaning blade are arranged in order from top to bottom.The beneficial effect is: multiple functions can be realized by combination stirring blade, high-strength local shearing is provided, mixing is uniform, and mixing efficiency is high.

This invention discloses a briquetting device for recycling non-ferrous scrap metal, relating to the field of metal resource recycling technology. It includes a forming box, a feeding mechanism, a briquetting mechanism, and an atmosphere protection mechanism. A controller is fixedly installed on one outer wall of the forming box, and a weighing plate with a built-in weight sensor is fixedly installed on the bottom inner wall of the forming box. This invention uses a rodless cylinder-driven reciprocating feeding cylinder, combined with a screw feeder and a laser ranging probe, to achieve multi-layer, multi-point uniform distribution of material within the forming box. This effectively avoids the problem of uneven briquetting density distribution caused by material accumulation on one side in traditional devices, improving the overall density consistency of the briquetting. The weighing plate with the built-in weight sensor accurately measures the weight of the material for each briquetting operation, and combined with an ultrasonic thickness sensor to detect the thickness of the briquetting blocks after forming, this invention ensures that the weight and thickness of each briquetting block are within the set range, meeting standardized production requirements.

The utility model discloses a taper drill bit heat treatment frock relates to taper drill bit technical field. Including, the fixed frame is fixedly provided with the main limit frame on the outer wall top surface of fixed frame, and the bottom of fixed frame is fixedly provided with the closing plate, and the top of inner wall of fixed frame is slidably embedded with a plurality of lift columns, and the top of outer wall of a plurality of lift columns is fixedly provided with the lifting plate, and the outer wall of lifting plate is slidably embedded in the main limit frame, and the bottom of outer wall of lifting plate is fixedly provided with the sliding column, and the outer wall of sliding column is slidably embedded in fixed frame and closing plate. Through closing plate, lift column, lifting plate, sliding column and electromagnetic thread coil, can utilize electromagnetic heating mode, and fill inert gas, to prevent the oxidation reaction of taper drill bit surface to improve the heating efficiency and reduce the change of taper drill bit structure.

The utility model discloses a kind of floatation reagent adding flow control device, including fixed pipe and fixed frame, the outer wall of fixed pipe is connected and installed with flow control mechanism on one side of top, the outer wall of flow control mechanism is fixedly installed with floatation reagent raw material box on top, the fixed frame is fixedly installed in the outer wall of fixed pipe one side, the inner wall one side of fixed frame is equipped with the floatation reagent raw material propulsion mechanism of telescopic activity, the inner wall one side of fixed pipe is welded and installed with shielding block, the outer surface other side one side of fixed pipe is equipped with the size matching discharge pipe. This kind of floatation reagent adding flow control device, by setting flow control mechanism, so flow of floatation reagent raw material can be controlled, by setting floatation reagent raw material propulsion mechanism, so the amount of floatation reagent raw material can be controlled, so the amount of floatation reagent raw material addition can be automatically controlled.

This invention discloses a method for low-temperature pressing purification and dewaxing of Torreya grandis kernels, comprising at least the following steps: S5.1 Pre-preparation of a composite filter layer: After pre-cooling the filter chamber of a vacuum filtration device, a filter screen and a filter membrane are laid in sequence, and nitrogen is introduced to remove impurities; S5.2 Gradient negative pressure filtration: The initially dewaxed oil is injected into the filter chamber at low temperature, first pre-filtered at -0.05MPa to -0.06MPa for 10 minutes, then deep filtered at -0.08MPa to -0.09MPa for 20 to 30 minutes to retain trace wax crystals; S5.3 Nitrogen purging to remove water: The dewaxed oil is introduced into a low-temperature oil storage tank, and nitrogen is continued to be introduced to remove water and prevent oxidation; S5.4 Finished product fine filtration: The dewaxed oil is slowly heated and then finely filtered through a filter screen to obtain Torreya grandis finished oil. Gradient negative pressure filtration retains trace wax crystals in Torreya grandis oil. This invention employs a gradient negative pressure dewaxing step, which ensures sufficient driving force to accelerate the filtration speed and utilizes the formed filter cake layer as a secondary filtration medium to efficiently retain trace amounts of residual wax crystals. This approach ensures a high dewaxing rate while shortening the filtration time and improving production efficiency.

The application discloses a gas furnace for reducing forging heating oxidation and a control method. The gas furnace comprises a furnace body, a burner unit, a natural gas supply unit, a combustion-supporting air supply unit, a detection system and a control system. The furnace body is provided with multiple temperature control zones. The burner unit comprises multiple burners. The natural gas supply unit is connected with the burner unit to provide natural gas for the burner unit. The combustion-supporting air supply unit is connected with the burner unit to provide combustion-supporting air for the burner unit. The detection system comprises a temperature detection unit and an oxygen content detection unit. The temperature detection unit is used for monitoring the temperature of each temperature control zone. The oxygen content detection unit is used for monitoring the oxygen content in flue gas discharged from the flue gas pipeline of the furnace body. The control system is electrically connected with the natural gas supply unit, the combustion-supporting air supply unit and the detection system. The control system is used for automatically regulating the natural gas flow and the combustion-supporting air flow according to the temperature data and the oxygen content data. The application has the advantage of improving the forging oxidation inhibition effect.

The invention belongs to the technical field of composite materials, and particularly relates to a titanium-based composite material of a bionic layered structure and a preparation method and application of the titanium-based composite material. The titanium-based composite material is prepared from the following chemical components in percentage by mass: 88.0%-92.0% of a Ti element, 6.2%-7.5% of a Cr element, 0.6%-0.9% of a B element, 0.6%-1.0% of a C element and inevitable impurities, and the total percentage is 100%. A material containing a Ti element, a material containing a Cr element, a material containing a C element and a material containing a B element are subjected to vacuum suspension smelting and casting of a (TiC + TiB) / Ti composite material cast ingot, the obtained (TiC + TiB) / Ti composite material cast ingot is subjected to homogenization, hot rolling and annealing composite process treatment, then the annealed (TiC + TiB) / Ti composite material cast ingot plate is used as a reinforcing layer, a TC4 titanium alloy plate is used as a toughness layer, and the TiC + TiB / Ti composite material cast ingot is subjected to heat treatment. Alternately laminating and placing; and finally, the high-toughness titanium-based composite material of the bionic layered structure is obtained through vacuum hot-pressing diffusion bonding. The high-strength and high-toughness titanium-based composite material has high strength and high plasticity at the same time.

This invention relates to the field of steel rolling technology and discloses a steel rolling mill unit and a hydraulic pump servo pressure load balancing and energy-saving control system. The system includes a base with two symmetrically arranged machine bases mounted on its top surface. The opposing surfaces of the two machine bases have through grooves containing a first roll assembly and a second roll assembly for rolling steel plates. A first lifting mechanism is mounted on the bottom surface of the through grooves, with the first roll assembly mounted at its output end. Two symmetrically arranged first guide rails are mounted on the sides of the through grooves, with a first slide block slidably connected to each guide rail. The second roll assembly is mounted on the first slide block and is driven to rise and fall by the second lifting mechanism. Two symmetrically arranged water spray mechanisms are mounted on the sides of the machine bases. An air jet mechanism is also mounted on the machine bases. This unit has a stable structure, high roll adjustment precision, and can comprehensively clean iron oxide scale and effectively inhibit secondary oxidation, significantly improving the surface quality of rolled steel plates and the stability of production operation.

The utility model discloses a cleanable depolarization film which comprises a substrate, a first protective film layer made of aluminum oxide is plated on the substrate, a depolarization film layer is plated on the first protective film layer, an anti-dazzle film layer is plated on the depolarization film layer, and a second protective film layer made of aluminum oxide is plated on the anti-dazzle film layer. The depolarization film solves the problems that an existing depolarization film is easy to clean, damage and oxidize, and the light splitting performance is affected, through the depolarization film layer, the light splitting performance is improved, meanwhile, the polarization degree of light is reduced, and through the anti-oxidation film layer, invasion of oxygen molecules is effectively blocked, so that the light splitting performance is improved. An internal film layer is prevented from oxidation reaction, so that the service life of the product is prolonged.

The utility model discloses high-purity quartz sand oxygen-free chlorination roasting equipment which comprises a roasting section provided with a heat preservation furnace body and a heater, the heat preservation furnace body is arranged on the periphery of the heater in a sleeved mode, the two ends of the heater are respectively provided with a ventilation connector which reacts with sand inside the heater, and the heater maintains an internal oxygen-free environment through the ventilation connectors. Relates to the technical field of quartz sand oxygen-free chlorination roasting. Compared with traditional high-temperature chloridizing roasting equipment, the high-temperature chloridizing roasting equipment has the advantages of being high in heating speed, high in heating efficiency, capable of saving electricity and energy, even in heating, capable of achieving selective heating, good in environmental protection, capable of improving labor conditions, small in occupied area, capable of saving investment, low in maintenance cost and the like, and meanwhile the yield, quality and grade of products can be improved. Meanwhile, new impurities can be prevented from being introduced in the reaction process, and oxidation reaction is avoided.

The present application relates to coal gangue disposal technical field, specifically to a kind of coal gangue layered landfill disposal method, comprising the following steps: S1, landfill site pretreatment;S2, pipeline pre-buried processing: first pre-buried pipe and second pre-buried pipe are arranged on the landfill site, one end of first pre-buried pipe is located on pre-buried site, the other end extends to pre-buried site outside, second pre-buried pipe is vertically arranged on pre-buried site and is communicated with first pre-buried pipe, and a plurality of air holes are arranged on second pre-buried pipe along the length direction;S3, layered landfill processing: coal gangue layer and loess layer are filled on the landfill site, and layered structure of coal gangue layer-loess layer-coal gangue layer is formed, the uppermost layer of layered structure is loess layer, and coal gangue layer and loess layer are both compacted;Second pre-buried pipe is provided with air hole in corresponding position of each layer of coal gangue layer;S4, anti-oxygen gas is transported into second pre-buried pipe through first pre-buried pipe.The present application can reduce the risk of spontaneous combustion of coal gangue layer.

The invention relates to the technical field of rotating target materials, in particular to a centrifugal binding method of a large-size ITO rotating target material, which comprises the following steps: step 1, pretreatment of a contact surface: degreasing and cleaning the inner wall of the ITO target material and the outer surface of a metal back tube, and then respectively sputtering nickel or copper for metallization treatment, with the thickness of a sputtering layer being 0.5-2 microns; step 2, assembling and positioning: coaxially assembling to form a 0.1-0.3 mm uniform binding gap, and mounting a sealing check ring; 3, centrifugal binding is conducted, specifically, rotation is conducted at the rotating speed of 800-1500 r / min, high-purity indium solder at the temperature of 180-200 DEG C is injected, and inert gas protection is conducted; and 4, cooling molding: cooling to room temperature at 5-10 DEG C / min. Uniform filling of the welding flux is achieved through centrifugal force, the binding rate reaches 99% or above, the binding strength is larger than or equal to 25 MPa, the problems that a large-size target material is large in binding defect number and low in strength are effectively solved, and the method is suitable for industrial production.

This invention discloses a black hot spring bath concentrate, its preparation method, and its application, relating to the field of personal care products technology. It comprises component A, an active black hot spring concentrate, and component C, a sulfide and humic acid composite stabilization system. Component A must contain humic acid with a content of ≥500 mg / L metasilicic acid, 5-15 mg / L fluoride ions, ≥10 mg / L total hydrogen sulfide, ≥20 mg / L metaboric acid, and ≥100 mg / L total organic carbon. Component C consists of selenite, polyphenolic antioxidants, and metal ion chelating agents. This invention utilizes a low-temperature membrane enrichment-bioenzymatic hydrolysis coupling-nano-stabilization integrated technology to fully preserve the quaternary characteristic component spectrum of black hot springs ("metasilicic acid-fluoride-sulfide-humic acid"), and uniquely employs a composite stabilization technology targeting the dual-active system of "sulfide-humic acid." It can be stored for a long time at room temperature and pressure, exhibiting excellent physical stability and long-lasting efficacy, and demonstrating a clearly targeted therapeutic effect of black hot springs.

This application relates to the field of remote water meter module box manufacturing technology, and more particularly to a laser welding system, method, and remote water meter module box. The laser welding system includes: a sealed container forming a welding chamber for the base and cover of the remote water meter module box to be inserted; a gas filling and defilling assembly including a gas outlet pipe and a gas inlet pipe sealed and connected to the welding chamber; and a laser. During laser welding, the base and cover of the remote water meter module box are placed into the welding chamber of the sealed container. After the welding chamber is evacuated to a vacuum state, it is filled with nitrogen gas, so that the base and cover of the remote water meter module box are laser welded in a nitrogen environment. This avoids the oxidation reaction of the plastic after laser melting, that is, eliminates the influence of oxygen on laser welding, thereby avoiding the formation of pores inside the weld line after welding. This ensures that the airtightness and welding strength of the weld meet the requirements, and avoids the increase in laser welding difficulty due to the influence of oxygen.

The utility model discloses an inverted scraper conveyor for recycling lithium batteries. A plurality of scrapers are uniformly connected to the periphery of a transmission chain; the guide plate is located in the shell assembly, fixedly connected with a lower side bottom plate of the shell assembly through a lower side support, in contact fit with the lower portion of the transmission chain located on the lower side and used for guiding the transmission chain. The baffle is located in the upper side space in the shell assembly and located in the area below the feeding port, the outer side end edge of the baffle is fixedly connected with a side end plate of the shell assembly, and the baffle is located on the upper portion of the transmission chain on the upper side and used for preventing falling materials from entering the transmission chain. The filling port and the extraction port are formed in a side end plate of the shell assembly in a spaced mode, an air inlet one-way valve is installed in the filling port, and an air outlet one-way valve is installed in the extraction port. The conveyor can meet the requirement for material conveying in the lithium battery recycling process, the probability of clamping stagnation can be remarkably reduced, the conveying efficiency can be remarkably improved, and the maintenance frequency can be effectively reduced.

This application relates to a current strip, a terminal block, and an electrical device. The current strip includes a main body and a bridging part. Because the bridging hole and the first surface are spaced apart in a second direction, when the bridging component is assembled into the bridging hole, the bridging component and the main body remain in a non-contact state, thereby preventing friction between the bridging component and the current strip. Based on this, on the one hand, wear on the current strip and the bridging component can be reduced, extending their service life; on the other hand, damage to the surface plating of the current strip due to repeated wear can be prevented, and oxidation of the substrate inside the current strip due to exposure to air can be prevented, thereby effectively suppressing the increase in contact resistance and ensuring stable conductivity of the current strip. Therefore, by spaced the bridging hole and the first surface in a second direction, this application can eliminate the causes of friction and wear, improving product reliability and service life while ensuring the long-term stability of the electrical connection.

The invention belongs to the technical field of food processing, and particularly relates to caramel Chinese chestnut powder and a preparation method thereof. The preparation method of the caramel Chinese chestnut powder provided by the invention comprises the following steps: 1) cooking Chinese chestnut pulp with water until the pulp does not have a hard core, so as to obtain cooked Chinese chestnuts; 2) cooling the cooked Chinese chestnuts, adding water, and pulping to obtain Chinese chestnut slurry; (3) carrying out enzymolysis on the Chinese chestnut pulp by using medium-temperature alpha-amylase, and then carrying out enzyme deactivation treatment; and 4) after the enzyme deactivation treatment is finished, concentrating the slurry after the enzyme deactivation into concentrated Chinese chestnut slurry, stir-frying the concentrated Chinese chestnut slurry at 120-130 DEG C to obtain a caramelized material, and then drying and crushing the caramelized material to obtain the caramelized Chinese chestnut powder. According to the preparation method of the caramel Chinese chestnut powder, the nutrition of Chinese chestnuts can be reserved, the digestion and absorption rate can be increased, natural and mellow scorched flavor can be formed, and harmful substances cannot be generated.

The present application relates to hydrogen energy preparation technical field, specifically relates to a kind of porous transport layer for proton exchange membrane water electrolysis cell and its preparation method and application.The porous transport layer includes titanium matrix and composite coating, the composite coating includes Ta barrier layer, PtTa transition layer and Pt surface conductive layer in turn from matrix to outside.The present application adopts magnetron sputtering process to prepare the composite coating, with the characteristics of process parameter precision controllable, batch preparation repeatability excellent, can be widely applied to the surface modification of porous transport layer in proton exchange membrane water electrolysis device, effectively improve the overall performance and service life of electrolyzer.

The application provides a method and device for grading gasification and reforming recovery of retired fan blades, and belongs to the technical field of solid waste decomposition and recovery. The method comprises the following steps: heating retired fan blade particles to 700-900 DEG C in an inert atmosphere, introducing water vapor for pyrolysis to obtain pyrolysis gas; introducing the pyrolysis gas into a porous medium loaded with an active metal catalyst to perform periodic pulse joule heating, and the average temperature in the process is 900-1200 DEG C to obtain hydrogen-rich synthesis gas; and cooling and recovering glass fibers in an inert atmosphere after pyrolysis. Heating in an inert atmosphere can prevent oxidation reaction and protect the structure of glass fibers; the introduction of water vapor can realize complete decomposition of the resin matrix, and the glass fibers obtained have high surface cleanliness and high tensile strength retention rate; then, the joule effect is used to realize rapid multi-stage high temperature, and the first-stage pyrolysis product is directionally converted into hydrogen-rich synthesis gas. The problems of high recovery cost and large environmental risk of the existing retired fan blades are solved.

The invention belongs to the technical field of steel slag treatment equipment, and particularly relates to a novel steel slag braising device and process for comprehensively utilizing a dust removal system, the novel steel slag braising device comprises a closed slag braising unit, a pressure control unit, a dust removal unit, a waste heat unit and a water circulation unit, and all the units cooperate to realize steel slag treatment and resource circulation; resources are efficiently utilized, waste heat recovery and tailing recycling are both considered, waste heat generated by the process can be used for heating, and maximum waste heat utilization is achieved; the subsequent utilization safety of the steel slag is guaranteed; meanwhile, in the treatment process, through cracking and refining during steel slag soaking, the slag-iron separation effect is further optimized, and the iron recovery efficiency is promoted; compared with a traditional technology, the technology has the advantages of being small in investment, small in occupied area and low in operation cost, meanwhile, the treatment efficiency and the comprehensive utilization value are considered, and the advantages of feasibility and economic benefits are remarkable.