89results about How to "Inhibit rapid growth" patented technology

The invention relates to a method for preparing extrafine anatase titanium dioxide nano rods, which comprises that: (1) titanium containing inorganic substances are hydrolyzed, the temperature is raised to be between 20 and 100 DEG C, inorganic base solution is added for heat preservation and hydrolysis and neutralizes pH to between 7 and 8, and precipitation of hydrous titanium dioxide is obtained; (2) the precipitation is repeatedly washed, added with oxyful, stirred and subjected to ultrasonic dispersion, the temperature is raised to be between 0 and 50 DEG C and the heat is preserved for 1 to 24 hours; and (3) water solution of pertitanic acid is diluted by deionized water, then filled into a hydrothermal reaction kettle, subjected to hydrothermal treatment at a temperature between 100 and 250 DEG C for 2 to 48 hours, and cooled to room temperature. The preparation method is simple; the obtained sol does not contain organic stabilizer; and the titanium dioxide in the sol is anatase, has a rod-shaped structure and high length-diameter ratio, and can form extrafine rod-shaped nanocrystal titanium dioxide.

A semiconductor device having a junction FET having improved characteristics is provided. The semiconductor device has a junction FET as a main transistor and has a MISFET as a transistor for control. The junction FET has a first gate electrode, a first source electrode, and a first drain electrode. The MISFET has a second gate electrode, a second source electrode, and a second drain electrode. The MISFET is an n-channel type MISFET and has electric characteristics of an enhancement mode MISFET. The second gate electrode and the second drain electrode of the MISFET are connected to each other by short-circuiting. The first gate electrode of the junction FET and the second source electrode of the MISFET are connected to each other by short-circuiting.

The invention relates to a preparation method of anatase phase titanium dioxide sol. The invention utilizes inorganic acid which contains titanium as a main material to conduct pyrohydrolysis on a solution of inorganic acid to get anatase phase or titanium dioxide white sediment of anatase and rutile mixed crystal; and adopts mineral acid as a dispergator to conduct dispergation at the temperature of 50 to 100 DEG C and get the sol of anatase phase titanium dioxide nano-crystal. The crystal size and crystallinity of titanium dioxide in the sol can be controlled by altering the production conditions and dispergation technology of the white sediment. The invention can get the anatase phase titanium dioxide transparent sol which does no contain organic stabilizer and has a crystal size of a plurality of nonameters. Furthermore, the sol has the characteristics of high density, high stability, transparency, etc.

This invention discloses a method for preparing metal dielectric composite particles of nanoscale Ag / SiO2. The method comprises: hydrolyzing tetraethyl orthosilicate by NH3 catalysis to prepare SiO2 microspheres, preparing AgClO4 electrolyte solutions with different concentrations, adding the prepared SiO2 microspheres into the AgClO4 electrolyte solutions, ultrasonicating in an electrolytic tank for 10min, inserting two electrodes into the electrolytic tank, applying DC to electrolyze and obtain the product, centrifuging to separate the product, washing with deionized water and ethanol repeatedly, and drying at 30-50 deg.C. This invention utilizes sonoelectrochemical method to deposit Ag nanoparticles onto the surface of SiO2 microspheres. The Ag nanoparticles are uniformly distributed onto the surface of SiO2 colloid, and have excellent potential applications.

The invention discloses a magnesium aluminate spinel enhanced magnesia-based foamed ceramic filter with capability of realizing sintering at low temperature, excellent chemical stability and excellentthermal shock resistant performance, and a preparation method thereof. The preparation method comprises the following steps that (1) 10 to 20 percent of nanometer alumina sol, 0.8 to 1.5 percent of rheological agents and the balance of magnesium oxide ceramic powder containing a nanometer aluminum oxide sintering aid are proportioned; deionized water is added; ball milling and uniform mixing areperformed; then, through vacuum exhaust, ceramic slurry with the solid content being 60 to 70 percent is prepared; (2) a polyurethane foamed plastic template is soaked into the ceramic slurry; the polyurethane foamed plastic template is extruded through a roller press for removing the redundant leaching hanging slurry; then, biscuit is prepared; then, the biscuit is heated to 80 to 120 DEG C for drying; (3) the dried biscuit is put into a sintering furnace; the temperature is raised to 1400 to 1600 DEG C; high-temperature sintering is performed; cooling is performed along with the furnace to room temperature; the magnesia-based foamed ceramic filter is obtained.

The invention belongs to the field of titanium-based alloys, and specifically relates to a preparation method of a high-temperature titanium alloy bar material, wherein the preparation method includesthe steps: heating a prepared TC25G titanium alloy ingot to 1100 DEG C-1200 DEG C, and then cogging and forging in a beta phase region by a fast forging machine or a hydraulic press; heating to 1030DEG C-1100 DEG C, repeatedly carrying out upsetting and drawing-out forging by the fast forging machine or the hydraulic press, then heating the forged blank to T[beta]-110 DEG C-T[beta]-20 DEG C (T[beta] is a [alpha]+[beta] / [beta] phase transition temperature of an TC25G titanium alloy), and repeatedly carrying out upsetting and drawing-out forging by the fast forging machine or the hydraulic press; and finally, heating the forged blank after forging to T[beta]-110 DEG C-T[beta]-30 DEG C, and drawing out to the required size by the fast forging machine or the hydraulic press, to obtain the titanium alloy bar material with a low-power structure of blurred crystals and a uniform high-power structure. The prepared TC25G titanium alloy bar material has high tensile strength of the bar material at room temperature and high temperature, good thermal stability and high fracture toughness after double heat treatment. The preparation method has the advantages of convenient operation and strongprocess controllability, and the prepared TC25G titanium alloy bar material has good batch stability.

The invention relates to a preparation method of a neutral nano titanium dioxide hydrosol for a functional fabric, comprising the following steps: adding TiCl4 dropwisely in deionized water and hydrolyzing, then adding an alkaline solution, adjusting the pH value to neutral to obtain a suspension containing white precipitates, adding the obtained filter cake in deionized water, adjusting the pH value by using acids, then carrying out dispergation and adding a modifier or a dispersing agent to obtain the neutral transparent TiO2 hydrosol having a blue light. Compared with the prior art, the method has the advantages of wide resource of raw materials, simple process and convenient operation, and the prepared neutral nano titanium dioxide hydrosol has the advantages of uniform distribution of particles, good stability, and little or even no damage to fiber strength.

This invention relates to a method for rapidly preparing calcium tungstate mesorystals. The method adopts microemulsions as the media, and can obtain the product with a very short reaction time. The method comprises: adding n-octane, n-butanol and cetyl trimethyl ammonium bromide into the same amount and concentration of calcium salt aqueous solution and sodium tungstate aqueous solution, respectively, to obtain two transparent microemulsions, rapidly mixing the two microemulsions within a certain temperature range, stirring for 10 min, and terminating the reaction to obtain calcium tungstate mesocrystals. The method has such advantages as simple process, low cost and rapid reaction. The size distribution of the obtained calcium tungstate mesocrystals is uniform.

The present invention provides an intelligent packaging device for granular medicine, which includes a casing, a rotating mechanism for transferring materials arranged in the casing, a feeding mechanism arranged on the first side of the rotating mechanism and on the casing, and arranged on the rotating The transfer mechanism on the second side of the mechanism and on the casing, the unloading mechanism on the third side of the rotating mechanism and inside the casing, the sterilization mechanism on the casing for sterilization, and the The control mechanism outside the housing and used for coordinated control of the rotating mechanism, feeding structure, transfer mechanism, unloading mechanism and sterilization mechanism; through the logic programming of the control mechanism, orderly and coordinated work can be realized, and the The whole process of molding of the pellet shell, preparation of granular drug slurry, sealing of the pellet shell, drying, unloading, testing and sterilization of the formed pellets achieves better dissolution of the drug and is carried out through the shell. Wrapping is convenient for children to take; at the same time, a sterilization mechanism is set to reduce the growth of bacteria.

The invention discloses a magnesium oxide whisker in-situ synthesis magnesium aluminate spinel enhanced magnesium-oxide-based foam ceramic filter with chemical stability and excellent thermal shock resistance capable of sintering in a low temperature and a preparation method thereof. The preparation method comprises the following steps: (1) according to a mass percent, compounding by 15%-25% of nano-aluminum sol, 0.8%-1.5% of rheological agent, and the balance of magnesia ceramics powder containing magnesium oxide whisker, adding deionized water, ball-milling, uniformly mixing, and preparing ceramic slurry of which the solid content is 60%-70% through vacuum exhaust; (2) immerging a polyurethane foamed plastic template in the ceramic slurry, extruding the polyurethane foamed plastic template through a roller press so as to remove redundant immerging slurry, preparing a biscuit, heating the biscuit to 80-120 DEG C, and drying; and (3) placing the dried biscuit in a sintering furnace, warming to 1400-1600 DEG C, and sintering in a high temperature, cooling to room temperature along with the furnace, to obtain the magnesium-oxide-based foam ceramic filter.

The invention relates to a Chinese herbal medicine micro-ecology feed product. The Chinese herbal medicine micro-ecology feed product is prepared by taking 1-10 parts of hairyvein agrimony, 1-10 partsof honeysuckle leaves, 1-10 parts of oldenlandia diffusa, 1-10 parts of radix ampelopsis, 25-35 parts of radix ophiopogonis, 15-25 parts of dried tangerine peel and 1-10 parts of lysine, adding 200-300 parts of crude starch, mixing the materials with bacillus subtilis after lactobacillus fermentation treatment to form semi-dried particles. Activated lactobacillus and functional components easilylost in Chinese herbal medicines are kept to the maximum extent through an embedding technology, and the air entering paste is consumed through lactobacillus fermentation and the growth of other sundry bacteria is restrained in the later-period feed storage process. It can be effectively avoided that the functional components in feed restrain the rapid growth and reproduction of probiotics, anti-oxidization and anti-virus components in the Chinese herbal medicines are sufficiently used for improving the functions of livestock and poultry, and the aim of improving the meat quality of livestockand poultry is achieved.

The invention discloses a method for treating energetic material synthetic wastewater, belonging to the field of environmental protection. The method for treating the energetic material synthetic wastewater comprises the steps of a, performing neutralizing treatment before a Fenton reaction; b, performing the Fenton oxidization reaction, namely adding a ferrous salt into filtered wastewater, and dropwise adding oxydol to perform catalytic oxidation reaction under the reaction condition that the temperature is 20-70 DEG C, the pH value is 3-4, the mole ratio of H2O2 to COD is 3:1 to 2:1, the mole ratio of Fe<2+> to H2O2 is 1:7 to 1:8, the reaction time is 4-6 h, and the inlet water COD is 5000-120000 mg / L; c, performing neutralizing treatment after the Fenton reaction; d, performing solid-liquid separation; e, performing facultative anaerobe degradation; and f, performing aerobic degradation. The method can be used for treating various types of energetic material synthetic wastewater, and particularly has good performance on treatment of characteristic nitro-sulfuric acid wastewater; the method is suitable for wastewater with a wide range of indexes and salt contents that the COD is 500-120000 mg / L, and the total salt content is 1000-220000 mg / L.

The invention relates to a making method for a quick-frozen greenling double fillet. The method includes: selecting a fresh or frozen and naturally thawed fresh greenling as the raw material, using a slicing machine to cut the greenling into a bone-bearing double fillet with the back fishskin connected, then subjecting the fillet to reshaping, washing and impurity removal, and soaking the fillet into a seasoning solution composed of table salt, vitamin C, red yeast rice, fatty acid, lemon juice and water to undergo impregnation to be tasty, then placing the fillet into a dish, and carrying out cold air drying, quick-freezing treatment, packaging, and inspection, thus obtaining the quick-frozen greenling double fillet. The making method provided by the invention has the advantages of reasonable and strict technology, strong operability, high production efficiency, and is suitable for industrialized production. The greenling double fillet made by the method has the characteristics of nutrition and health, fresh and mellow taste, unique flavor, safety and sanitation, long shelf life, convenient eating, as well as tender and soft mouthfeel.

The present invention relates to a sewage heating system of sewage treatment plant. Said system is characterized by that the invented compressor is fixedly connected with non-return valve by means of refrigerant pipeline, the non-return valve is fixedly connected with three-stage shower-cooled condenser by means of refrigerant inlet pipeline, the three-stage shower-cooled condenser is fixedly connected with expansion valve by means of refrigerant outlet pipeline, said expansion valve is fixedly connected with evaporator by means of refrigerant pipeline, the evaporator is fixedly connected with gas-liquid separator by means of refrigerant pipeline, and said gas-liquid separator is fixedly connected with compressor by means of refrigerant pipeline. The treated sewage heat energy can be recovered and reutilized.

The invention discloses a wear-resistant surface modifier for manganese phosphating and a preparation method thereof. The modifier comprises the following components: 5 to 15wt% of manganese carbonate, 3 to 15wt% of 40% manganous nitrate solution, 1 to 10wt% of disodium hydrogen phosphate, 5 to 15wt% of Na4P2O7, 0.5 to 3wt% of seignette salt, 0.5 to 3wt% of sodium oleate and 0.08 to 0.8wt% of polyvinyl alcohol. The preparation method comprises the following steps: stirring and mixing the measured manganese carbonate, 40% manganous nitrate solution, seignette salt and sodium oleate, adding measured polyvinyl alcohol, carrying out reaction to generate precipitate, drying and grinding the precipitate into powder of 3 to 30 mu m, adding measured Na4P2O7 at weight ratio of (1 to 10): (10 to 1), and completely and uniformly stirring and mixing the mixture.

The invention discloses a method for synthesis of band gap-adjustable monodispersed Cu2ZnSn(S1-xSex)4 nano-crystals by crystal phase control. The method comprises the following steps of mixing a metal chloride, elemental sulfur and elemental selenium in a three-necked flask, pouring an alcohol solvent and a less amount of oleylamine into the three-necked flask, putting the three-necked flask in a magnetic stirring electric jacket, stirring with heating in a nitrogen or argon protective atmosphere for a complex reaction, then cooling, adding ethanol into reaction products, carrying out centrifugal separation precipitation, cleaning oleylamine on surfaces of crystal particles by a cleaning agent, and carrying out vacuum drying to obtain the band gap-adjustable monodispersed Cu2ZnSn(S1-xSex)4 nano-crystals. The method provided by the invention has simple processes, a low cost and no pollution on the environment and is suitable for large scale production.

The invention provides a preparation method for a high-activity lactobacillus solid preparation. With syrup and corn pulp as main carbon source and nitrogen source, the preparation method reduces medium cost, and by means of a three-stage pH regulation technique, the preparation method greatly increases the fermentation level. The liquid part which is obtained after fermentation broth is centrifuged is treated and then recycled, consequently, the effective metabolic product of lactobacillus is kept, and moreover, lactobacillu is protected well. The preparation method disclosed by the inventionhas the advantages of simple process, easiness in operation and high production efficiency, and furthermore, prepared lactobacillus is high in viable count, highly stable and easy to store.

Method and apparatus for treatment and post-treatment of the stenosed region of an artery after reduction of the region by angioplasty or other means by applying a radioactive dose to said reduced region of the artery by positioning a radioactive dose to the reduced region is disclosed.

The invention discloses a three-dimensional porous lithium metal composite negative electrode material and a preparation method and application thereof. At first, that weave stainless steel mesh is pickled and dry to obtain clean and dry stainless steel mesh current collector; A low-temperature surface nitriding treatment is then carry out in a glow plasma nitriding furnace, wherein that treatmenttemperature is 300-500 DEG C and the treatment time is 0.1-5 hours; Finally, the nitrogen-doped stainless steel mesh and the lithium sheet are mechanically pressed by a tablet press to prepare a three-dimensional porous lithium metal composite anode material. As that preparation method has strong controllability, simple proces, low cost and easy industrialization, the preparation method can be used in the preparation industry of lithium metal battery electrode material, and the cycling stability of the electrode material is remarkably improved.

The invention relates to a making method for powder sticked pacific saury slices. The method includes: preferably selecting a fresh pacific saury as the raw material, subjecting the raw material pacific saury to scaling, decapitating, evisceration, fish blood and impurity removal, conducting carcass opening and separation on the fish body and the vertebra, making the fish body into fish slices, then washing and draining the fish slices, and putting them into a seasoning solution made of salt, garlic essential oil, kelp liquid, soy sauce, granulated sugar, ginger juice, lemon juice and water to undergo low temperature impregnation to be tasty, performing water controlling, then wrapping the outer surfaces of the fish slices with potato starch, and carrying out quick-freezing treatment so as to obtain nutrient-rich quick-frozen powder sticked pacific saury slices. The making method for powder sticked pacific saury slices provided by the invention has the characteristics of advanced technology, reasonable process, strong operability and high making efficiency. The made fish slices have the advantages of beautiful appearance, safety and sanitation, stable quality, long shelf life, fresh and mellow taste, palatable sweet and salty taste and unique flavor, and can be eaten after opening the package and frying.

A vehicle includes an electric power storage device, an electric motor, and an electronic control unit. The electronic control unit is configured to control charging and discharging of the electric power storage device such that a state of charge becomes a target state of charge, to determine whether or not a degree of deterioration of the electric power storage device due to unevenness in salt concentration is equal to or larger than a predetermined degree, when the degree of deterioration is equal to or larger than the predetermined degree and the state of charge is equal to or less than a predetermined requested state of charge, to set the target state of charge such that the target state of charge increases monotonically, and to set an increase amount or an increase rate of the monotonic increase to be larger as the degree of deterioration is larger.

The invention relates to a method for identifying key resources of a project on the basis of analyzing resource loads, which comprises the steps of 1) carrying out statistics of resource loads; 2) identifying the key resources; 3) improving resource management: providing a management suggestion according to the resource type, so that the analyzed result is of more guiding meaning. The method is used to identify difference types of resources according to actual task loads of resources (mainly personnel). The key resources are of key monitoring accordingly. Meanwhile, conversion from non-key resources to key resources is accelerated through management improvement of non-key resources, so that the available resources of enterprises can be increased.

The invention relates to a doped sulfide composite film, a preparing method of the doped sulfide composite film and a workpiece comprising the doped sulfide composite film. The doped sulfide compositefilm is composed of doped elements and sulfide, wherein the doped elements are Ce and Al, and the sulfide is WS2 or MoS2; and the doped sulfide composite film includes, by mass, 6.11%-14.27% of Ce, 1.13%-10.26% of Al and the balance sulfide. The mechanical performance of the doped sulfide composite film is improved, and therefore good wear-resisting performance can be shown; and the crystal strength of the Ce and Al co-doped sulfide base composite film is high, and the elasticity and elasticity modulus are improved by 300% or higher.

The invention relates to a compound traditional Chinese medicinal composition for relieving pain of a patient with malignant tumor in middle and advanced stage. The compound traditional Chinese medicinal composition is prepared from the following components in parts by weight: 20-30 parts of sargent gloryvine, 20-30 parts of spatholobus suberctu, 20-30 parts of safflower, 4-6 parts of centipede, 4-6 parts of scorpion, 2-3 parts of toad venom, 20-30 parts of short-pedicel aconite root, 2-3 parts of dragon blood, 20-30 parts of corydalis tuber, and 4-6 parts of borneol, wherein sargent gloryvine, spatholobus suberctu and safflower are monarch drugs, and mainly used for activating blood circulation to remove stasis, and are complemented with one another in actions to strengthen the drug effect; centipede, scorpion, toad venom and short-pedicel aconite root are ministerial drugs, and play the roles in dredging channels and collaterals to recover smoothness of blocked channels and collaterals; dragon blood and corydalis tuber are adjuvant drugs, and are used for diminishing inflammation and relieving pains, and inhibiting quick growth of tumors; borneol is a conductant drug, and is used for accelerating the drug effect of each component to play effect in respective channels. The compound traditional Chinese medicinal composition is widely applicable to various pains caused by blood stasis and qi stagnation, and is particularly suitable for pain relieving of malignant tumor in middle and advanced stage.

The invention relates to a radix astragali micro-ecological feed product. The radix astragali micro-ecological feed product is prepared through the following steps of taking 25-50 parts of radix astragali, 25-35 parts of radix ophiopogonis, 15-25 parts of dried orange peel and 1-10 parts of lysine, then adding 200-300 parts of coarse starch, performing lactic acid bacteria fermentation treatment,and performing mixing with bacillus subtilis so as to obtain half-dried granules namely the radix astragali micro-ecological feed product. According to the radix astragali micro-ecological feed product disclosed by the invention, an embedding technique is utilized, so that functional ingredients which are easy to lose, in active lactic acid bacteria and Chinese herbal medicines, are reserved to the maximum degree; through fermentation with the bacillus subtilis, air entering gelatinization substances is consumed, and the growth of other infectious microbes is restrained in the preservation process of the feed at the later stage; and the situation that functional components in the feed restrain the quick growth and the quick propagation of probiotics can be effectively avoided, oxidation-resistant antiviral components in the Chinese herbal medicines are fully utilized for improving the functions of livestock and poultry, and the purpose of improving the meat quality of the livestock andthe poultry is achieved.

The invention discloses a method for manufacturing a zinc electrode of a zinc-nickel cell. A silver-plated foam nickel conductive framework is coated with 84 to 88 portions of zinc powder, 4 to 7 portions of calcium hydroxide, 0.5 to 1.0 portion of indium and 7 to 9 portions of adhesive which is a pasty active substance, is pressed and molded and is finally dried. The method has obvious function in habiting deformation of the zinc electrode and growth of dendritic crystal; with the method, as the hydrogen precipitation overpotential of silver is high, the hydrogen precipitation is inhibited to improve the charging efficiency of the zinc electrode; each part of the electrode has even density and thickness; the polarization potential and the electrodeposition efficiency have small difference; and the electrode is uneasy to deform so as to well inhibit the problem of rapid increase of the dendritic crystal of specific parts of the zinc electrode, thereby well solving the problems of deformation, the dendritic crystal and short service life of the zinc electrode. The cyclic life of the nickel-zinc cell is increased from 200 cycles to 350 cycles. The method solves the problem of difficult sealing of the zinc-nickel cell.

The invention relates to a degradable mulching film for agricultural planting and a preparation method thereof. The degradable mulching film is prepared from the following raw material components in parts by weight: 30 to 45 parts of low-density polyethylene, 10 to 15 parts of degradable master batch, 10 to 15 parts of polyvinyl alcohol, 8 to 13 parts of phenol-formaldehyde resin, 4 to 6 parts ofstarch, 4 to 5 parts of dioctyl phthalate, 10 to 15 parts of ferrocene, 2 to 3 parts of polycarbonate, 2 to 3 parts of titanium white, 3 to 4 parts of sorbic acid, 20 to 25 parts of ethanol and 8 to 12 parts of de-ionized water. The degradable mulching film provided by the invention has the advantages of easiness of obtaining materials and high transparency; the degradable mulching film has certain air permeability and waterproof performance; the ground temperature is improved and the soil humidity is kept; the degradable mulching film has the effects of promoting seed germination and rapid growth of seedlings and inhibiting the growth of weeds, and strong toughness; the degradable mulching has long service time and can be degraded to reduce the environment pollution.

The invention discloses a compound microbial additive for improving silage quality and application of the compound microbial additive. The compound microbial additive comprises pediococcus acidilactici liquid, lactobacillus plantarum liquid, bacillus natto liquid and candida utilis liquid in a volume ratio of 1:1:1:1. According to the application, the compound microbial additive is used as a fermentation accelerant for preparing high-quality silage. The compound microbial additive disclosed by the invention has the advantages of low cost, good fermentation stability, high safety and the like, can obviously improve the quality of the silage, has relatively high adaptive value and relatively good application prospect, and can obtain high-quality silage when being used as a fermentation accelerant for preparing the silage. The compound microbial additive has the advantages of simple process, convenience in operation, easiness in control, low raw material cost, low energy consumption, short time consumption, environment friendliness and the like, is suitable for continuous large-scale batch production, is convenient for industrial utilization, and shows a good application prospect.

A vehicle includes an electric power storage device, an electric motor, and an electronic control unit. The electronic control unit is configured to control charging and discharging of the electric power storage device such that a state of charge becomes a target state of charge, to determine whether or not a degree of deterioration of the electric power storage device due to unevenness in salt concentration is equal to or larger than a predetermined degree, when the degree of deterioration is equal to or larger than the predetermined degree and the state of charge is equal to or less than a predetermined requested state of charge, to set the target state of charge such that the target state of charge increases monotonically, and to set an increase amount or an increase rate of the monotonic increase to be larger as the degree of deterioration is larger.

The invention discloses a heat treatment process for high-nitrogen stainless bearing steel and belongs to the technical field of heat treatment. The high-nitrogen stainless bearing steel comprises the following components in percentage by weight of 0.3 to 0.65% of C, less than or equal to 1.0% of Si, less than or equal to 1.0% of Mn, less than or equal to 0.015% of S, less than or equal to 0.025% of P, 14.5 to 16.0% of Cr, 0.85 to 1.10% of Mo, 0.2 to 0.5% of N, unavoidable impurity elements and the balance of Fe. The high-nitrogen stainless bearing steel is subjected to overall hardening and tempering treatment, high-frequency induction quenching and subsequent heat treatment, so that the surface hardness of a high-nitrogen stainless bearing steel part reaches 58 HRC or above after heat treatment, meanwhile, the hardening and tempering hardness of a core part is kept, and reasonable matching of high hardness, high strength and good toughness is achieved.