816results about How to "Reduce oxidation" patented technology

The invention relates to the technical field of lithium iron phosphate production, and discloses a carbon-coated titanium-doped lithium iron phosphate positive electrode material and a preparation method thereof.The preparation method comprises the following steps that 1, a ferrous solution and a phosphorus source solution are mixed in proportion, dopamine hydrochloride is added, a pH regulator is dropwise added in the stirring state, the pH of the solution is adjusted to 4.0-5.5, a reaction is conducted, a titanium source solution is added, and a reaction solution is obtained; after uniformly stirring, continuously dropwise adding a pH regulator to regulate the pH value of the solution to 5.5-6.5; the iron phosphate octahydrate coated with the titanium-embedded polydopamine is obtained; 2) calcining the titanium-embedded polydopamine-coated ferrous phosphate octahydrate in an inert gas atmosphere to obtain carbon-coated titanium-doped anhydrous ferrous phosphate; 3) mixing the carbon-coated titanium-doped anhydrous ferrous phosphate with lithium phosphate and a carbon source, ball-milling, mixing, spray-drying and calcining to obtain a carbon-coated titanium-doped lithium iron phosphate positive electrode material; the synthesis process is simple, and energy consumption is reduced.

The invention discloses an aquatic product ultra-low temperature fresh-keeping processing control method, and relates to the technical field of aquatic product fresh-keeping processing, and the method specifically comprises the following steps: evaluating a fat local oxidation risk grade caused by oxygen exposure on the surface of a high-fat aquatic product in each region in a freezing chamber; dividing each area in the freezing chamber into a low risk area, a medium risk area and a high risk area according to an evaluation result; constructing an oxidation risk adjustment mechanism according to the division result of each region in the freezing chamber; in the implementation process of the oxidation risk adjustment mechanism, whether the adjustment effect of the oxidation risk adjustment mechanism on each region can reach the expectation or not is evaluated, and the oxidation risk adjustment mechanism is optimized according to the evaluation result. According to the method, the problem of fat oxidation caused by oxygen exposure on the surface of the high-fat aquatic product in the ultralow-temperature freezing process is solved, and the preservation effect in the freezing process is effectively improved through real-time monitoring and dynamic optimization of an adjustment mechanism.

The invention discloses a process for smelting a ZL205A alloy. The process comprises the following steps: S1, ultrasonic pretreatment of raw materials: pretreating the raw materials of the ZL205A alloy by utilizing an ultrasonic technology; s2, segmented precise feeding and continuous stirring; s3, an argon dynamic protection system; S4, intelligent temperature control and energy recovery; s5, performing online component analysis and real-time adjustment; s6, a green pouring and cooling system; by optimizing the smelting process, adding a trace nucleating agent and other measures, the strength, toughness, corrosion resistance and other properties of the aluminum alloy can be remarkably improved, and the aluminum alloy can meet the requirement for high-performance application; the segmented precise feeding and continuous stirring technology is adopted, it is guaranteed that alloy elements are evenly distributed in the aluminum alloy, and the problem of unstable performance caused by uneven element distribution is solved; the argon dynamic protection system can effectively reduce oxidation and air suction phenomena in the smelting process, reduce generation of oxides and air holes and improve the quality of aluminum alloy.

The invention discloses a low-carbon magnesia-carbon refractory material for clean steel smelting and a preparation method thereof, and relates to the technical field of magnesia-carbon refractory materials. The low-carbon magnesia-carbon refractory material comprises the following components: 40-50 wt% of fused magnesite with the particle size of 3-5 mm, 20-30 wt% of fused magnesite with the particle size of 1-3 mm, 10-20 wt% of fused magnesite with the particle size of less than or equal to 74 [mu] m, 8-12 wt% of silicon powder, 1-3 wt% of alumina powder and 3-5 wt% of crystalline flake graphite. 2-4 wt% of a composite additive and 4-6 wt% of phenolic resin are added; the composite additive comprises andalusite and mullite. The material has excellent mechanical properties, thermal shock resistance, oxidation resistance and erosion resistance; the preparation method has the characteristics of low cost and simple process, and the prepared low-carbon magnesia carbon refractory material has excellent oxidation resistance, thermal shock resistance and slag resistance by exerting the phase volume expansion effect and intergranular phase enhancement effect of the multiphase ceramic; the used graphite is low in content, graphite consumption and molten steel recarburization risk can be reduced, and the method is suitable for smelting clean steel.

The invention discloses an air curtain laser failure prevention device for an aluminum-lithium alloy, and relates to the technical field of aluminum-lithium alloy ingots. The air curtain laser failure prevention device comprises a glass sheet located right in front of the laser range finder, a glass upper cover plate arranged on the side face, close to the laser range finder, of the glass sheet, a glass lower cover plate arranged on the side face, away from the laser range finder, of the glass sheet and a ventilation pipeline arranged on the side portion of the glass lower cover plate, and the ventilation pipeline is used for outputting inert gas. The side face, away from the laser range finder, of the glass sheet is purged, and an inert gas protection layer is formed. The inert gas is introduced into the ventilation pipeline at one side of the glass lower cover plate below the laser irradiation glass, and the lower part of the glass sheet is continuously purged, so that an inert gas protection air curtain is formed below the glass sheet, dust and the like can be effectively prevented from being attached to the upper glass sheet, the glass is kept clean, the laser failure is prevented, and the service life of the glass sheet is prolonged. And meanwhile, aluminum alloy oxidation of the launder can be reduced or even avoided through introduction of inert gas, and the ingot casting efficiency is improved.

The invention discloses injectable hydrogel for eye drug sustained release and a preparation method and application thereof.The method comprises the steps that a NaIO4 solution is dropwise added into a hyaluronic acid solution, after the reaction is conducted in a dark place at the room temperature, ethylene glycol is added for continuous reaction, and formylated hyaluronic acid is prepared; the preparation method comprises the following steps: adding adipic dihydrazide into a carboxymethyl cellulose solution, uniformly stirring at room temperature, adding 1-hydroxybenzotriazole and 1-ethyl-(3-dimethylaminopropyl) carbodiimide hydrochloride, and stirring to react, so as to prepare aminated carboxymethyl cellulose; and mixing the PBS solution of aminated carboxymethyl cellulose with the PBS solution of formylated hyaluronic acid, uniformly stirring, adding a to-be-carried drug and a FeCl3 solution, and carrying out a reaction to prepare the injectable hydrogel for sustained release of the eye drug. The hydrogel is convenient to use and high in gelation rate, effectively realizes controllable release of drugs, and has a wide application prospect in the field of biological medicines.

The invention belongs to the technical field of welding, and discloses a dissimilar metal power modulation galvanometer laser welding method which comprises the following steps: finely cleaning a 6061 aluminum alloy and a 304 stainless steel plate by using acetone, and then airing for more than 20 minutes; the aluminum steel sheet is assembled, pressed and fixed on a welding test platform in a steel-up-aluminum-down mode; the position of the welding test platform is adjusted, argon serves as welding protection gas, and a protection gas nozzle is arranged to be aligned with a welding pool area; laser welding parameters are set, a laser power modulation mode is set to be a gradient power mode, and the gradient power mode is to regulate and control phase point laser power in a circular scanning track in the advancing direction of a welding seam; a welding test is carried out in the mode that a galvanometer laser head is fixed and a welding test platform is moved, and a laser and the welding test platform are synchronously started and stopped; and the protective gas is started 5 seconds before the laser is started, and after the laser is stopped, the protective gas is stopped lagging for 10 seconds so as to continuously protect the welding seam and prevent oxidation.

The invention provides a high-damping titanium alloy with a wide temperature range at a high temperature and a preparation method thereof. The titanium alloy is prepared from the following elements in percentage by mass: 3.4 to 5.2 percent of Al, 2.8 to 4.4 percent of Cr, 2.6 to 4.5 percent of Mo, 0.7 to 1.5 percent of Zr, 0.17 to 0.41 percent of O and the balance of Ti. The preparation method of the alloy comprises the following steps: (1) cast ingot smelting; (2) homogenization treatment; (3) beta forging treatment; (4) near beta forging treatment; (5) rolling treatment; and (6) annealing treatment. The method is reasonable in conception, the functional characteristics of wide temperature range and high damping can be obtained at high temperature, the mechanical properties of high strength and high plasticity are achieved, meanwhile, the preparation difficulty of the material is reduced in combination with a traditional titanium alloy machining method, and the method is suitable for large-scale production, popularization and application.

The invention provides anti-aging collagen peptide mask liquid and a preparation method thereof. The mask liquid is prepared from the following components in percentage by mass: 1 to 2 percent of tremella polysaccharide, 3 to 4 percent of herba portulacae extract, 2 to 3 percent of radix gentianae extract, 0.3 to 0.8 percent of nicotinamide, 1.2 to 1.6 percent of alpha-arbutin, 0.2 to 0.6 percent of chrysanthellum indicum extract, 0.7 to 1.5 percent of geranium flower / leaf / stem extract, 0.4 to 0.8 percent of aloe barbadensis extract, 0.7 to 1.3 percent of radix sophorae flavescentis extract, 0.3 to 0.9 percent of herba houttuyniae extract, 1.2 to 1.7 percent of herba centellae extract and the balance of water. The traditional Chinese medicine composition is prepared from the following raw materials in percentage by weight: 0.2 to 0.6 percent of fructus hippophae extract, 0.02 to 0.06 percent of peony root bark extract, 0.06 to 0.09 percent of scutellaria baicalensis root extract, 0.04 to 0.08 percent of rosemary extract, 0.01 to 0.04 percent of pearl powder and the like. The mask liquid prepared by the invention has an anti-aging effect.

The invention discloses a preparation method of electrode slurry for an electrostatic chuck, and belongs to the technical field of electrostatic chucks, powder is dispersed in an organic solvent through a ball mill, the powder is aluminum oxide powder and two or more kinds of carbide powder with different particle sizes, the D50 particle size of the aluminum oxide powder is 3-6 [mu] m, and the D50 particle size of the carbide powder is 3-6 [mu] m; powder with different particle sizes can have higher stacking density, few organic solvents are needed in the dispersion process, shrinkage after sintering is small, and cracking and layering of electrode slurry are not prone to being caused; ball-milling and dispersing the powder, drying in a drying oven for 24 hours, grinding by using a mortar, and sieving for later use; and mixing the sieved powder with an organic carrier with the solid content of 60-80%, mixing for 30-60 minutes in a mixing and kneading machine, and then rolling in a three-roller machine to obtain the required electrode slurry. According to the invention, three kinds of particles with different particle sizes are mixed, so that the powder bulk density is greatly improved, the electrode thickness controllability is improved, and the shrinkage ratio after burning is reduced.

The invention relates to a natural plant extract food antioxidant additive and a preparation method thereof, the natural plant extract food antioxidant additive comprises a core material and a wall material, and the core material comprises the following components by mass: 10-20 parts of a polyphenol compound, 10-15 parts of a polysaccharide compound and 20-30 parts of a flavonoid compound. The preparation method comprises the following steps: mixing sodium alginate and a polysaccharide compound to prepare a polysaccharide microcapsule; mixing a polyphenol compound, a flavonoid compound and the polysaccharide micro-capsule, and dispersing with an emulsifier to obtain an emulsified dispersion liquid; and mixing a chitosan solution and a polylysine solution to obtain a mixed wall material solution, adding the mixed wall material solution into the emulsified dispersion liquid to prepare a microcapsule product, washing, and freeze-drying to obtain the food antioxidant additive of the natural plant extract. The additive has the effect of improving the anti-oxidation performance, can provide long-acting and lasting anti-oxidation protection, and has a certain health-care effect.

The invention belongs to the technical field of keel bending, and particularly relates to an automatic bending device for a light steel joist, which comprises a conveyor, a bending assembly is arranged above the conveyor, and the device is provided with the bending assembly, so that the light steel joist can be attached to the surface of the bending assembly to be subjected to pre-deformation bending treatment; the light steel joist is subjected to small-angle deformation before formal bending treatment, so that the resilience after edge folding can be reduced, the residual stress in the light steel joist can be released, the possibility of quality problems such as deformation and cracking caused by stress concentration is reduced, the structural strength and durability of the light steel joist are enhanced, and the service life of the light steel joist is prolonged. The stability and reliability of the whole structure are guaranteed, the internal stress distribution is more uniform and reasonable, so that the machining precision and the product quality are improved, the bending consistency of the light steel keel is guaranteed, manual intervention is not needed, the automation degree of the bending process is greatly improved, the labor intensity is relieved, and the production efficiency is improved.

The invention provides a preparation method of a semiconductor structure, and particularly relates to the technical field of semiconductors. The preparation method of the semiconductor structure comprises the steps that a substrate is provided, the substrate comprises a substrate body, a pad oxide layer, a first pad nitride layer and a plurality of groove isolation structures, the pad oxide layer covers the portion, between every two adjacent groove isolation structures, of the substrate body, the first pad nitride layer covers the surface of the pad oxide layer, and the groove isolation structures are at least partially exposed out of the substrate body; removing the first pad nitride layer; performing ion implantation on the substrate; carrying out thinning treatment on the pad oxide layer; forming a second pad nitride layer on the surfaces of the trench isolation structure and the pad oxide layer; etching the second pad nitride layer, the pad oxide layer and the substrate by taking the patterned photoresist as a mask so as to form an opening in the substrate; and performing thermal oxidation treatment on the substrate in the opening to form an oxide layer. By adopting the preparation method of the semiconductor structure, the speed of a semiconductor device can be increased, and the circuit performance of the semiconductor device can be improved.

The invention discloses a high-quality laser welding manufacturing device and a high-quality laser welding manufacturing method, which solve the problems of concentrated energy distribution, small inherent focal depth, insufficient depth-diameter ratio of welding and insufficient welding thickness of the existing ultrafast laser welding technology. The zoom collimation system, the cone mirror, the acousto-optic modulation unit and the long focal depth compression unit are sequentially arranged on a light path where the welding laser is located in the emergent direction of the welding laser. The zoom collimation system is used for changing the spot diameter of the welding laser and collimating the spot diameter; the cone mirror is used for shaping the welding laser subjected to diameter-variable collimation into long-focal-depth laser; the acousto-optic modulation unit divides the long-focal-depth laser into N sub-beams and adjusts the spatial position of each sub-beam, and N is a positive integer greater than or equal to 1; and the long focal depth compression unit is used for adjusting the spot diameter and focal depth length of each sub-beam, so that the focal position and energy of each sub-beam are suitable for laser welding.

The utility model discloses a wave soldering device, which relates to the technical field of soldering equipment and comprises a transport device, the transport device comprises a conveyor belt, an element positioner and a motor, the motor is mounted on the left end face of the transport device, the conveyor belt is mounted on the inner side of the transport device, and the element positioner is mounted on the conveyor belt. A plurality of element positioners are mounted on the inner wall of the transportation device; according to the soldering flux spraying device, the laser sensor is arranged, the air pump is started, soldering flux is sprayed out through the nozzle, the soldering flux is sprayed to a part needing to be welded, the laser sensor can accurately identify the part needing to be sprayed with the soldering flux, identification is effective, production efficiency can be improved, the fan can be installed through the installation plate, and the production efficiency is improved. The fan is started to drive airflow to move, firstly, the air is filtered through the activated carbon filter screen, then the air is heated through the heating wire, and finally the air is brought to the circuit board to preheat and dry a part to be soldered, so that the processing quality of the device is improved.

The invention discloses a composition for delaying oxidation of a phenolic hydroxyl compound, which comprises a protective agent, a stabilizer and a protective agent, and the mass ratio of the protective agent to the stabilizer to the protective agent is (0.01-0.3): (0.01-3): (0.005-5). According to the composition for delaying oxidation of the phenolic hydroxyl compound, hydroxyl in the phenolic hydroxyl compound is influenced by a benzene ring, so that the activity is enhanced, and the phenolic hydroxyl compound is easily oxidized into quinones with different colors. The composition comprises a protective agent, a stabilizer and a protective agent which can form a triple protective cover to delay the oxidation of the phenolic hydroxyl compound. Wherein the protective agent can be complexed with metal ions to reduce the catalytic action of trace iron or other heavy metals in the system on the oxidation reaction, so that the generation rate of free radicals is reduced; hydrogen bonds are formed between the stabilizer and the phenolic hydroxyl compound, so that the probability that the phenolic hydroxyl group is attacked by free radicals is reduced, and the oxidation reaction of the phenolic hydroxyl compound is delayed; the protective agent has a certain electron donor capability and is competitively combined with free radicals, so that the free radicals become relatively stable, attack of the free radicals on phenolic hydroxyl groups is interrupted, oxidation reaction is inhibited, the thermal stability of phenolic hydroxyl compounds is greatly improved, and discoloration reaction is delayed.

The invention discloses a laser welding machine assembly for self-positioning rotary welding, and belongs to the field of welding devices. Comprising a workbench, a rotatable welding table is arranged above the workbench, a laser welding head is arranged above the welding table, a gas conveying pipe is arranged in the laser welding head, a mounting plate is arranged on one side of the laser welding head, a swing assembly is arranged on the mounting plate, and one end of the swing assembly is connected with the laser welding head. According to the device, through the arranged connecting piece, during welding operation, the laser welding head can conduct swing welding operation, meanwhile, part of shielding gas is extracted through the action generated by the swing welding operation to be matched with output shielding gas, the covering range of the shielding gas is enlarged, and the welding quality of the device is further improved; defects generated during welding are effectively reduced, meanwhile, interference of plasmas on laser beams can be reduced, and the stability of welding operation is improved.

The invention relates to the technical field of daily chemicals, in particular to a dark tea extract containing eurotium cristatum composite strains for solid aerobic fermentation. The composite strains comprise eurotium cristatum and saccharomycetes. The dark tea extract provided by the invention is stable in performance and not easy to discolor, contains components such as polysaccharide, amino acid and mineral substances, and can help skin moisturize. The permeability of the components is enhanced in the fermentation process, moisture can be locked on the surface layer of the skin, and the moisture degree of the skin is kept. The skin care product has very strong antioxidant capacity, and can neutralize free radicals, slow down the oxidation process of skin, delay skin aging and reduce wrinkles and fine wrinkles. A certain calming effect can be achieved on the skin which is prone to redness and itching or has slight inflammation.

The invention belongs to the field of dairy cow feed, and particularly relates to embedded algae powder for dairy cow feed addition and dairy cow feed, the embedded algae powder for dairy cow feed addition comprises core material particles and enteric coating layers coating the core material particles, and the mass ratio of the core material particles to enteric coating materials in the enteric coating layers is 10: (2-4); the core material particles comprise algae powder, a binder and an emulsifier. The enteric coating layer is dissolved in the small intestine to release the particles, the algae powder is dispersed in the particles under the action of the emulsifier and the binder, and the mass ratio of the core material particles to the enteric coating layer is controlled to be within the range. After the embedded algae powder is added into a dairy cow feed and reaches small intestines together with other feeds, the contained algae powder is released at a proper speed, so that the DHA absorption of the small intestines is greatly improved.

The invention discloses a wire drawing process for a cable copper conductor of a liquid cooling over-charging pile, which comprises a copper wire drawing process, and the copper wire drawing process specifically comprises a wire drawing speed control process and a wire drawing oil concentration control process. A proper amount of antioxidant is added, copper sulfate is used for forming a protective oxidation film and preventing copper materials from being oxidized, ethidene diamine is used as a corrosion inhibitor and retarding the corrosion rate of copper, copper phosphate is used as an antirust agent and forming a protective oxidation film, and a preservative and a surfactant are used, so that the corrosion-resistant coating is prepared. A protective film is formed on the surface of the copper wire, air is isolated, and oxidation of the copper wire is reduced; meanwhile, the antioxidant can reduce friction force on the surface of the copper wire, reduce abrasion, improve wire drawing efficiency and product quality, and avoid the problems that in the copper wire drawing production process, friction is generated between the copper wire and parts such as a mold and a guide wheel, the surface temperature of the copper wire is increased, and oxidation is prone to occurring.

The invention relates to the technical field of lithium ion batteries, in particular to an electrolyte, a preparation method thereof, an injection method and a lithium ion battery, the electrolyte comprises a first electrolyte for first injection and a second electrolyte for second injection, the first electrolyte comprises a first solvent, a first lithium salt and a first additive, the second electrolyte comprises a second solvent, a second lithium salt and a second additive, the first electrolyte comprises a first solvent, a first lithium salt and a first additive, the second electrolyte comprises a second solvent, a second lithium salt and a second additive, the mass percentage of the second electrolyte in the electrolyte is 5-20%, the first additive comprises dimethyl sulfide and vinylene carbonate, and the second additive comprises triphenyl phosphate and vinylene carbonate. According to the electrolyte, the first additive comprises dimethyl sulfide, and the second additive comprises triphenyl phosphite, so that the bad problems of high-temperature gas production and negative electrode interface black spots in the use process of a lithium-rich material lithium supplementing agent are solved.

The invention provides an invar alloy and a rheoforming method thereof, and relates to the technical field of invar alloy production processes. The rheoforming method of the invar alloy comprises the following steps that alloy raw materials are sequentially subjected to smelting and tundish treatment, and alloy melt is obtained; the superheat degree of the melt is controlled, the alloy melt is subjected to thin-strip continuous casting, and a thin strip is obtained; and the thin strip is sequentially subjected to soaking treatment and rolling deformation, and an invar alloy product is obtained. The rheoforming technology is adopted, the invar alloy can be rapidly solidified, the surface of a casting strip is smooth and free of vibration marks, slag inclusion, flash and the like, segregation of inclusion elements to the grain boundary can be effectively restrained, and oxidation of the casting strip is reduced, so that the hot rolling procedure is shortened or even omitted, the problem of cracking in hot working is fundamentally avoided, the production efficiency and the yield are effectively improved, and the production cost is reduced. Therefore, energy consumption is reduced, production cycle is shortened, and production cost is reduced.

The invention discloses a purification method and a purification device for crystallized magnesium, and relates to the field of magnesium metal smelting. The method comprises the following steps: under the protection of an inert atmosphere, firstly carrying out pressure-applying melting treatment on a magnesium material to be smelted, and then carrying out pressure-applying filtering treatment on a product obtained after the melting treatment, so as to complete the flux-free smelting process of the magnesium material. And meanwhile, the metal magnesium liquid and most of the oxide shells are separated by utilizing the liquidity difference between the liquid metal magnesium and the solid oxide shells. Compared with a conventional smelting process without pressure application, the method has the advantages that the melting rate of the crystallized magnesium can be remarkably increased, most of oxide impurities are removed, a series of pollution problems caused by flux use are solved from the source, and low-cost, high-efficiency and high-quality smelting of the crystallized magnesium is realized.

The invention relates to a wide-temperature-range iron-based hardfacing self-protection flux-cored wire capable of resisting 650 DEG C and below. The flux-cored wire comprises a cold-rolled steel strip outer skin and flux-cored powder wrapped in the cold-rolled steel strip outer skin. The flux core powder comprises, by mass, 40%-60% of high-carbon ferrochrome, 1%-6% of graphite, 10%-21% of ferromolybdenum, 5%-13% of ferroniobium, 1%-6% of ferrovanadium, 3%-8% of ferrotungsten, 0-3% of ferro-silicon-manganese, 3%-8% of rutile, 1%-4% of sodium fluosilicate, 0-3% of potassium feldspar and 1%-3% of fluorite powder. The problem that the self-protection capability is not coordinated with the high-temperature hardness and the wear resistance in the prior art is solved. According to the wide-temperature-range iron-based hardfacing self-protection flux-cored wire capable of resisting 650 DEG C and below, the use of precious metal can be reduced, and the manufacturing cost is effectively reduced. Through multi-component strengthening, the target that the room-temperature hardness is not lower than 60 HRC can be achieved, and the average hardness in the high-temperature environment of 650 DEG C is kept within the range of 42-53 HRC. In addition, the technical blank that the iron-based hardfacing coating is used for surface protection in the medium and low temperature environment of 350-650 DEG C is filled.

The invention belongs to the technical field of metal adsorption material preparation, and particularly relates to a preparation method of an attapulgite composite cellulose hydrogel material, which comprises the following steps: (1) uniformly dispersing acid modified attapulgite in water, then adding sodium alginate and polyvinyl alcohol, heating and stirring; (2) adding sodium carboxymethyl cellulose, and continuously stirring to obtain a mixed solution; and (3) injecting the mixed solution into a mold by using an injector, freeze-thawing, freeze-drying, immersing into a CaCl2 solution, cross-linking, washing for multiple times, and freeze-drying again to obtain the attapulgite composite cellulose hydrogel material. Sodium alginate, polyvinyl alcohol, sodium carboxymethyl cellulose and acid modified attapulgite in a proper proportion are matched with a multiple freeze drying method to construct a three-dimensional structure with multiple chemical adsorption, high specific surface area, long diffusion channel and abundant pores, so that the adsorption efficiency and the adsorption capacity of the composite material are improved, and various application requirements are met.

The invention discloses spinning coiling and winding equipment and a use method thereof, relates to the technical field of coiling and winding, and aims at solving the technical problem that in the prior art, after cotton drawing, the cotton sliver processing efficiency is low. A driving transmission assembly of a winding mechanism which is hung at the end, away from a thread arranging frame, of a thread grinding mechanism on a mounting shell drives a winding assembly to wind and wrap cotton slivers drawn by the thread grinding mechanism, and after wrapping, the cotton slivers are evenly wound through a winding mechanism and then placed into a finished product storage barrel to be stored. Cotton is wrapped and isolated after being drawn, the wrapping and winding time of the cotton can be greatly shortened through automatic operation of the winding mechanism and the winding mechanism, the production efficiency is improved, errors and labor intensity of manual operation can be reduced, and the production cost is reduced.

The utility model discloses a pressing cover type toona sinensis pickle quick pickling device which comprises a placing frame, a supporting frame fixed at the upper end of the placing frame and a containing box nested in the placing frame, and further comprises a mounting cover mounted on the upper side of the containing box, the cover plate is mounted on the lower side of the mounting cover and is used for extruding the cedrela sinensis in the containing box; and the lifting plate is mounted on the upper side of the mounting cover, and a hydraulic telescopic rod is fixed to the lower end of the lifting plate. According to the pressing cover type quick pickling device for the pickled cedrela sinensis, the cedrela sinensis needing to be pickled is contained in the containing box, during pickling, the cedrela sinensis in the containing box is extruded through the cover plate, the flavor and taste of the cedrela sinensis after being mixed with seasoning are improved, meanwhile, when the cover plate extrudes the cedrela sinensis, the cedrela sinensis can be conveniently pickled, and the taste of the cedrela sinensis is improved. And part of redundant air in the containing box can be discharged from the air outlet barrel, so that the air in contact with the cedrela sinensis in the pickling environment is reduced, the oxidation of the cedrela sinensis is reduced, and the flavor and taste of the pickled cedrela sinensis are further improved.

The utility model provides metal quenching equipment which comprises a quenching box, first telescopic push rods are symmetrically arranged at the upper end of the quenching box, the output ends of the two first telescopic push rods are jointly connected with a mounting frame, a water tank is arranged at the upper end of the mounting frame, the lower end of the water tank is connected with a water pipe, and the end, away from the water tank, of the water pipe is connected with a spray head. According to the metal quenching equipment disclosed by the utility model, waste gas can be extracted and discharged from the box body through the arranged fan, so that the purity and the surface quality of a metal material can be kept, and the water spraying angle of the spray head can be adjusted through the arranged adjusting mechanism, so that the metal material can be quickly and conveniently quenched, and the service life of the metal material can be prolonged. Therefore, the range and the force of the water mist covering the surface of the workpiece can be more accurately controlled, the cooling speed is effectively adjusted, and ideal metallographic structure and hardness distribution are ensured to be achieved.

The invention relates to the technical field of epoxy resin, and discloses hindered phenol attapulgite modified epoxy resin anti-aging floor paint, which is prepared by the following steps: reacting epoxidized attapulgite with hydroxyl-terminated polybutadiene to obtain hydroxyl-terminated polybutadiene modified attapulgite, reacting the hydroxyl-terminated polybutadiene modified attapulgite with maleic anhydride to obtain carboxylated polybutadiene modified attapulgite, and further reacting the carboxylated polybutadiene modified attapulgite with 3, 3 '-dihydroxy-terminated polybutadiene to obtain the hindered phenol attapulgite modified epoxy resin anti-aging floor paint. The hindered phenol-based attapulgite modified epoxy resin anti-aging floor paint is prepared by reacting the hindered phenol-based attapulgite and the polybutadiene with 1, 5-di-tert-butyl-4-hydroxybenzylamine to obtain hindered phenol-based attapulgite modified attapulgite, and mixing the hindered phenol-based attapulgite modified attapulgite with the epoxy resin emulsion, and the hindered phenol-based attapulgite modified epoxy resin anti-aging floor paint is prepared finally. The hindered phenol can be combined with free radicals generated in the oxidation process of the epoxy resin to terminate chain growth in the oxidation process of the epoxy resin and finally play a role in delaying oxidation of the composite epoxy resin floor paint, so that the comprehensive properties such as mechanical properties, mechanical properties and oxidation resistance of the composite epoxy resin floor paint are effectively enhanced.

The invention provides a method for preparing ferrous sulfate from iron-containing solid waste, and relates to the field of solid waste treatment. The method for preparing ferrous sulfate from the iron-containing solid waste comprises the following steps: mixing concentrated sulfuric acid and the iron-containing solid waste, and curing in a reducing atmosphere or a protective atmosphere to obtain a cured material; the cured material is subjected to water leaching and centrifugal separation, and silicon-containing slag and leachate are obtained; carrying out deepening treatment on the silicon-containing slag to obtain white carbon black; the leachate and iron powder are mixed for a reduction reaction, then a vulcanizing agent is added for vulcanization, precipitation and impurity removal, and copper sulfide slag and a ferrous sulfate solution are obtained through solid-liquid separation; treating the copper sulfide slag to recover valuable metals; and crystallizing the ferrous sulfate solution to obtain ferrous sulfate crystals. According to the method for preparing the ferrous sulfate from the iron-containing solid waste, low-cost, short-process and high-efficiency treatment of the iron-containing solid waste is achieved, and the ferrous sulfate product is obtained.