206results about How to "Reduce oxidation reaction" patented technology

The present invention relates to a continuous casting mold protecting powder and the manufacturing method of the mold protecting powder for a weathering steel. Adopting the making art of spraying particle, the mold protecting powder is made from the materials such as premelting material, quartz sand, fluorite, industrial calcined soda, magnesite, medium supper soot carbon, graphite, lithium carbonate and so on, chemical ingredients of the mold protection powder in weight percentage are as follows: SiO2 30.0 to 37.0 percent, CaO 30.0 to 37.0 percent, Al2O3 2.0 to 5.0 percent, MgO 3.0 to 6.0 percent, Li2O 1.5 to 2.5 percent, Na2O 5.5 to 8.5 percent, F 4.5 to 7.5 percent, TC(totally carbon) 4.5 to 6.5 percent, 0< Fe2O3 less than or eqal to 1.0%, binary alkalinity CaO/SiO2 is 0.95 to 1.05. The mold protecting powder regarding the invention melts evenly inside the mold and has weak reaction with the rare earth wire, excellent lubricating performance to the casting blank, even and proper heat transmission between the continuous casting mold and the casting blank, therefore reducing the ingot bleeding rate and the occurance rate of surface vertical flaws.

A preparing method of a lithium ion battery composite separating membrane is disclosed. A common PP or PE separating membrane is coated with an oxide coating, an aramid fiber resin coating and a PVDF-HFP copolymer layer to obtain the composite separating membrane. The composite separating membrane enhances mechanical performance and heat resistance of the separating membrane and enhances safety performance of batteries.

The invention provides a rolling method of a titanium steel composite board. The rolling method comprises the following steps of: 1, selecting the titanium steel composite board provided with a titanium plate as an upper layer and a steel plate as a lower layer; 2, pre-treating a surface; 3, heating and soaking in a heating furnace; and 4, rolling on a hot mill, and removing scale and cooling by utilizing high-pressure water. According to different physical characteristics of the titanium plate and the steel plate under the high-temperature state, through setting the proper heating and soaking processes, and adopting the high pressure water to remove the scale and cool in the rolling process, an oxide skin on the surface of the titanium steel composite board is greatly reduced, and sundries on the surface of the titanium steel composite board are eliminated, meanwhile, the titanium plate and the steel plate are cooled at different water flows, so that the deformation degree of the titanium plate corresponds to the deformation degree of the steel plate, head buckle or unwarp phenomenon of the titanium steel composite board in the rolling process can be effectively prevented, and damage about a roller is greatly reduced; and the titanium steel composite board, rolled by the invention, has the advantages of clean and tidy surface, no foreign matters to press and good plate cut.

The invention discloses a permanent magnet regenerating method of degenerated rare earth permanent magnet material, which comprises the following steps: grinding mechanically; removing impurity; dewetting in the vacuum; proceeding hydrogen disposal or hydrogen disproportionating reaction; adding high-magnetocrystalline anisotropic element and auxiliary texture forming element or alloy; moulding through sintering or adhering to produce anisotropic regenerated permanent magnet. The technology is reasonable with little oxide reaction, which can explore new path for degenerated rare earth permanent magnet.

The invention provides an oxygen reduction and humidity control curing agent for tobacco leaf storage, comprising a controlled-atmosphere curing agent and a humidity controlled curing agent which are in coordinated use with a use ratio range of (2-10):1. The controlled-atmosphere curing agent comprises the following components: 40-80% of reduced iron powder or pyrite powder, 1-8% of calcium oxide, 0.1-2% of mould proof assistant, 10-21% of activated carbon, 0-12% of sodium chloride, 1-15% of water absorbent, 3-15% of pearlite, 0.1-5% of first water retaining agent, 2-10% of diatomite and 0-10% of water. The humidity controlled curing agent comprises the following components: 30-60% of drier, 2-30% of second water retaining agent and 5-30% of pearlite. The curing agent for tobacco leaf storage can enable the oxygen reduction process to be mild and simultaneously improve dehumidification speed. The invention also provides a manufacturing method of the oxygen reduction and humidity control curing agent for tobacco leaf storage.

An environmental protection type composite board is composed of a joist layer and 1-2 layers of tea leaves and tea stems. Its preparing process includes such steps as choosing tea leaves and tea stems, fermenting, preparing joist, mixing tea leaves and tea stems with resin, and hot pressing.

The invention belongs to the field of fresh keeping of foods, and particularly relates to a freezing method of Luchuan pork. The freezing method comprises the following steps of (1) preparing a film coating agent; (2) performing micro-freezing treatment on pork; (3) performing film coating packaging treatment on the micro-frozen pork; and (4) performing ultrasonic assisted freezing preservation on the packaged pork: conveying the packaged pork into a freezing room, performing freezing until the temperature of the central layer of the pork is reduced to 2-4 DEG C, performing ultrasonic-assisted freezing for 3-6h, when the temperature of the central layer of the pork is reduced to minus 6 to minus 8 DEG C, stopping performing ultrasonic-assisted freezing, and continuing freezing the pork to minus 18 to minus 23 DEG C so as to obtain the frozen pork. The freezing method disclosed by the invention is simple to operate and stable in technology conditions, ice crystals generated during freezing of the pork can be reduced, the pork freezing speed can also be increased, the preservative effect is achieved, bacteria are restrained, the freezing storage time of the pork can be prolonged, the cell activity of frozen fresh meat can be guaranteed, and the phenomenon that juice flows outwards after the frozen pork is unfrozen is reduced.

The invention provides a high-strength Al-Zn-Mg-Cu-Ce-Y-Er-La-Sc wrought aluminum alloy. The alloy is composed of, by mass, 7% of Zn, 2% of Mg, 2.3% of Cu, 0.1% of Ce, 0.5% of Y, 0.1% of Er, 0.01% of La, 0.2% of Sc and the balance Al, wherein Al, Zn, Mg and Cu are added in a form of industrial pure Al, Zn, Mg and Cu with purity larger than 99.99wt.%, and Ce, Er, Y, Sc and La are added respectively in a form of powdery rare earth alloy with Al and 30wt.% of Ce, Mg and 30wt.% of Er, Mg and 20wt.% of Y, Al and 30wt.% of La, Al and 2wt.% of Sc. The invention further provides a manufacturing method of the alloy. Good composition homogenization effect is realized by adding rare earth elements and utilizing helium to blow rare earth alloy powder in, and a protecting atmosphere is formed through helium in the process of manufacturing, so that oxidizing reaction in the process of smelting is reduced as much as possible, the formed alloy is more accurate in composition, and the problem that conventional Al-Zn-Mg-Cu alloys are insufficient in performance and have product defects is solved effectively.

The invention belongs to the technical field of batteries, and discloses a non-aqueous electrolyte for a high-voltage lithium ion battery and the lithium ion battery. The non-aqueous electrolyte for the high-voltage lithium ion battery comprises a non-aqueous organic solvent, an electrolyte and a film-forming additive, wherein the film-forming additive contains a negative electrode film-forming additive and a fluorine-containing phosphate additive as shown in a structural formula 1. In the electrolyte, the HOMO energy of the fluorine-containing phosphate compound shown in the structural formula 1 is higher than that of ethylene carbonate, and the fluorine-containing phosphate compound preferentially undergoes an oxidation reaction on the surface of a ternary material to form a stable and compact CEI film, so the oxidation reaction of the electrolyte on the surface of an electrode is reduced; meanwhile, the interface film with low impedance is formed on the surface of the negative electrode, so the dynamic characteristics inside the battery can be improved, and the cycle life is prolonged; the negative electrode film-forming additive such as ethylene sulfate is preferentially reduced and decomposed on the surface of the negative electrode to form an excellent solid electrolyte membrane, so that the chemical composition of the SEI membrane is enriched, the impedance is adjusted,and the high-low temperature performance, the rate capability and the storage performance of the battery are improved.

The invention discloses a high-aging-resistance modified asphalt and a preparation method thereof. The high-aging-resistance modified asphalt comprises the following components in percentage by mass: 72-80% of substrate asphalt, 1.3-2.7% of hindered amine light stabilizer, 0.5-1.2% of trilauryl phosphite, 0.5-2% of barium stearate, 6-8% of diatomite, 5-10% of epoxy soybean oil and 5-8% of methyl isobutyl ketone. The preparation method comprises the following steps: adding the hindered amine light stabilizer, trilauryl phosphite and barium stearate into the substrate asphalt at appropriate temperature, uniformly mixing with the asphalt, and adding the diatomite, epoxy soybean oil and methyl isobutyl ketone to obtain the high-aging-resistance modified asphalt. The asphalt has very high heat stability and light stability, is capable of greatly enhancing the pavement performance and durability and prolonging the maintenance period and service life of the high-grade asphalt pavement when being applied to the asphalt pavement, and thus, has very high cost performance and wide application prospects.

The invention provides a cooking utensil, a control method of the cooking utensil, a control device of the cooking utensil and a computer readable storage medium. The control method comprises a heat insulation stage in which an air extraction device is controlled to be started, and the air extraction device is controlled to intermittently work. According to the control method provided by the invention, at the heat insulation stage, the air extraction device is controlled to be started, and the air extraction device extracts air in a cooking cavity; the cooking cavity is subjected to vacuum pumping, so that the inside of the cooking cavity is in a negative pressure state; the oxygen content in the cooking cavity can be reduced; the food oxidization reaction speed and the bacterium breedingspeed are decelerated; the food storage time of the cooking utensil is prolonged; and the food freshness is improved.

The invention discloses equipment and method for preparing a continuous carbon fiber reinforcement PEEK thermoplastic preimpregnating belt. The equipment for realizing the method adopts 4 stagger heatrollers and an infrared drying tunnel which are arranged in an S shape. The method comprises the following steps that after preliminary impregnating is performed on used PEEK resin particle materialsor used PEEK resin powder and two sides of continuous carbon fiber yarn, the used PEEK resin particle materials or the used PEEK resin powder and two sides of the continuous carbon fiber yarn jointlyenter front high-temperature heating rollers for heating, and extruded impregnating; then the preimpregnating belt enters the four stagger heat rollers to perform S-shaped propelling, and in the propelling process, impregnating is realized for four times, so that resin molten mass on two sides of the preimpregnating belt and carbon fibers are sufficiently impregnated, and the situation that a resin rich layer is generated on two sides of the preimpregnating belt is avoided; after being processed by guide rollers, the propelling direction of the impregnated preimpregnating belt is parallel tothe infrared drying tunnel; the impregnated preimpregnating belt is slowly cooled in the infrared drying tunnel to eliminate residual stress, so that the resin molten mass on two sides of the carbon fiber can be repeatedly extruded and impregnated, the impregnating effect is greatly increased, and the porosity of the preimpregnating belt is reduced; and the preimpregnating belt slowly passes through the infrared drying tunnel, so that slow temperature lowering is realized, and the residual stress produced in the S-shaped propelling process is released to a great extent.

The invention provides a production method for improving a pouring property of silicon-manganese killed silicon steel, and belongs to the technical field of steel smelting. The production method comprises the steps of converter smelting, RH vacuum refining and continuous casting, wherein a slag amount is strictly controlled during converter tapping, and lime and a slag surface deoxidizer are added to adjust slag; after RH vacuum refining decarburization is finished, low-carbon low-sulfur ferrosilicon is added for deoxidation, then manganese metal, ferrophosphorus and the like are added for alloying, meanwhile, a low-carbon steel slag surface deoxidizer is added to a slag surface of a steel ladle to modify the slag, calcium-magnesium-iron alloy is added after molten steel components reach the standard, after circulation is conducted for 3 min to 5 min, circulation treatment is conducted for 6 min to 10 min, and breaking and tapping are conducted; and continuous casting adopts protective pouring, a stopper rod with a stopper rod head containing more than or equal to 80% of Al2O3, less than or equal to 10% of C, and 8% to 15% of SiC, and having a porosity of less than or equal to 12% and a mass density of more than or equal to 2.9 g/cm<3> is selected for flow control in a pouring process, and the number of continuous pouring furnaces is more than or equal to 15 per tundish. According to the method, a corrosion problem of the stopper rod head in the pouring process can be remarkably solved, the number of continuous pouring furnaces is increased, and the production cost is reduced.

A method of manufacturing a solid aluminum electrolytic capacitor comprises the following steps: (1) core package winding; (2) core package fixing: fixing a positive or negative guide pin of a core package to a fixed bar and placing the core package on a material rack; (3) formation; (4) formation drying: setting the vacuum drying temperature at 150-200 DEG C, and drying the core package for 5-6 minutes in a vacuum environment; (5) impregnation; and (6) polymerization. The step of impregnation includes the following sub-steps: [1] pretreatment agent impregnating; [2] drying I: setting the drying temperature at 60-80 DEG C, and performing drying for 5-6 minutes in a vacuum environment; [3] monomer impregnating; [4] drying II: putting the core package treated in step (3) in a vacuum drying oven, setting the drying temperature at 60-80 DEG C, and drying the core package for 5-6 minutes in a vacuum environment; and [5] oxidant impregnating. The efficiency of capacitor production is high, and produced capacitors are of good quality.

The invention discloses a polishing bath of an aluminium material. The polishing bath of the aluminium material comprises a two-acid main bath and a rinsing bath, and further comprises a two-acid sub bath, wherein the two-acid sub bath accommodates a bath solution, and is equipped with a cooling device used for dissipating heat of the bath solution. The invention further discloses an aluminium material polishing production technology utilizing the polishing bath of the aluminium material. During aluminium material polishing production, after polishing of the two-acid main bath, the two-acid sub bath is newly added for temperature decreasing treatment, the temperature of the bath solution is controlled between 10 DEG C and 40 DEG C through temperature decreasing of the cooling device, the high-temperature aluminium material is quickly cooled, and the bath solution is enabled to drip for a long time till the bath solution is empty, so that the bath solution in the two-acid main bath is recycled during aluminium material polishing, and the unnecessary waste of raw materials such as phosphoric acid and sulfuric acid, and the fresh water resource is avoided.

The invention relates to a direct-mixing type multi-purpose automatic accurate fertilizer irrigation system which comprises a clean water tank, a raw fertilizer tank, a venturi tube, a fast fertilizer suction electromagnetic valve, an irrigation pump, an automatic control system, an electro connecting pressure gauge and a spherical fertilizer mixer, wherein the venturi tube sucks a raw fertilizer or an acid solution into a pipeline; the fast fertilizer suction electromagnetic valve controls a fertilizer suction amount; the output end of the irrigation pump is connected with the input end of the spherical fertilizer mixer through the pipeline, the pipeline positioned between the irrigation pump and the spherical fertilizer mixer is provided with the electro connecting pressure gauge; the output end of the spherical fertilizer mixer is respectively connected with an irrigation delivery pipeline and a fertilizer suction feedback pipeline; and the irrigation delivery pipeline is provided with an irrigation electromagnetic valve and a pipeline pressure detection device. The direct-mixing type multi-purpose automatic accurate fertilizer irrigation system disclosed by the invention realizes the immediate usage of a water fertilizer after mixing by adopting the independently developed spherical fertilizer mixer, can be used for furthest shortening the mixing time of a fertilizer and water and reducing the oxidation reaction generated because the fertilize contacts with air and can prevent the fertilizer waste generated in a fertilizer mixing process, provide higher output pressure through a direct-mixing type and cover more irrigated area.

The invention discloses a heat pump vacuum drying machine capable of working continuously. The heat pump vacuum drying machine capable of working continuously comprises a heat pump drying system and a vacuum system; the heat pump drying system is used for promoting circulating flowing of dry air and heating the dry air flowing in a circulating manner, and therefore to-be-dried materials placed in the heat pump drying system can be subjected to drying treatment, and dried materials are obtained; and the vacuum system is connected with the heat pump drying system and is used for placing the to-be-dried materials into the heat pump drying system and isolating the interior of the heat pump drying system from the outside air in the process when the dried materials are taken out of the heat pump drying system, and the vacuum degree in the heat pump drying system is maintained. The heat pump vacuum drying machine capable of working continuously can achieve continuous drying treatment on materials in various batches, unnecessary energy consumption and heat losses caused when the materials are replaced are avoided, it is avoided that oxygen rich in the outside air makes direct contact with the to-be-dried materials in a drying box, the generated oxidization reaction is reduced, and the content of nutritional ingredients in the materials is guaranteed.

A skin-protecting face pen for shielding sunshine, preventing wrinkles, delaying sanility and moistening skin is prepared from 13 raw materials including refined paraffin wax No.60, natural white beeswax candle, Uninual MC-80, superfine TiO2, animal fat, etc through mixing, fusing at 100-110 deg.c, grinding 6-8 times, heating to 70 deg.C, stirring while adding VE and VE, heating to 120-130 deg.c, and extruding out.