76results about How to "Guaranteed not to break" patented technology

The invention discloses a multi-element nitralloy material and a preparation method and application thereof and belongs to the technical field of alloy material development. The multi-element nitralloy material comprises 9-48% of V, 13-45% of Si, 0.05-9% of Mn, 3.3-14% of Fe, 15-30.5% of N, 0.01-5.0% of Cr, 0.06-2.0% of Al, 0-7.0% of Ti, 0-6.5% of B, 0-4.5% of Nb, 0-1.8% of C, 0-0.1% of P, and 0-0.1% of S. According to the multi-element nitralloy material and the preparation method and application thereof, the content of nitrogen in the alloy can be effectively controlled to be within a reasonable range according to different combining capacities of various elements and the nitrogen; meanwhile, the content of the nitrogen can be adjusted within a wider range according to requirements of practical purposes, and great convenience is provided for a molten steel microalloying reinforcing technique; safety and environmental friendliness are achieved in the preparation and using process, and no smoke or dust or odor is generated.

The invention discloses a system and method for high-speed railway subgrade settlement restoration. The system comprises at least eight lifting components, at least eight hydraulic lifting devices, a hydraulic distribution device, an automatic control system and a grouting device, wherein the at least eight lifting components are arranged at preset lifting points on a base plate, and every lifting component comprises a connecting part and a lifting part; every hydraulic lifting device is arranged between a high-speed railway subgrade and the lifting part of the lifting component; the hydraulic distribution device is connected with every hydraulic lifting device through hydraulic pipelines; the automatic control system controls the hydraulic distribution device to provide preset hydraulic pressure for every hydraulic lifting device so as to lift the base plate to a preset height of the high-speed railway subgrade; and the grouting device pours slurry in gaps formed between the base plate and the high-speed railway subgrade through slurry pipelines so as to support the base plate after the slurry is solidified. The invention further provides a method for track plate and base plate integrated lifting type high-speed railway subgrade settlement restoration.

The invention discloses stainless steel for a cutter and a manufacture method thereof. The steel comprises the following chemical components in percentage by weight: C:0.20-0.65, Si:0.10-0.50, Mn:0.10-0.60, P:0.010-0.030, S: 0.005-0.015, Cr: 14-17, Nb: 0.01-0.30, Ti: 0.005-0.025, W: 0.50-1.50, Al: 0.005-0.30 and the balance of Fe and inevitable impurities and also satisfies that the valent weightof Cr is 14.14-17.41, and the valent weight of Ni is 6.30-19.63. The manufacture method comprises the following steps: making steel in an induction furnace, casting ingot moulds, rolling in a reversing mill, cooling in a pile, thermally treating, and the like. A cutter made of the steel does not disintegrate, keeps durable sharpness and is suitable for manufacturing a kitchen cutter, scissors anda surgical knife. The manufacture method has excellent performance, simple production operation, easily controlled product quality and low cost.

The invention discloses a processing method for dried olive fruit sweetmeat and belongs to the technical field of agricultural local products. The processing method comprises the following steps of a, placing olive fruits into an edible salt aqueous solution with the concentration of 9-12 percent, soaking the olive fruits under a closed condition for 4-8 days, then placing the olive fruits into an edible salt aqueous solution with the concentration of 6.5-7.5 percent, and performing natural lactic acid fermentation under a condition of keeping the temperature at 19-27 DEG C as well as the closed condition for over 20 days; b soaking and washing the olive fruits which are fermented in the step a through clean water; and c, punching or scratching the soaked and cleaned olive fruits, then sugaring and drying the olive fruits to obtain the dried olive fruit sweetmeat. According to the method, the nutrition of the fruits cannot be destroyed under the condition that any chemical substances and food additives are not added; furthermore, unique fragrance is generated through conversion of components in a fermentation process; the produced dried olive fruit sweetmeat has a strong frankincense flavour and rich nutrition.

The invention discloses a scalable rod bundle channel multi-physical field visual body design, consisting of six parts, i.e., a visual body barrel used for shooting a longitudinal section, an upper seal head used for shooting a cross section in an overlooking way, a lower part transition section having scalability, a lower seal head connected with an experimental loop, a visual experiment rod bundle, a rod bundle fastening piece used for tensioning the experiment rod bundle, and related matching flange plates. An experimental body is formed by bonding acrylic, can be used for carrying out a rod bundle channel multi-physical field visual experiment under the normal pressure, and simulates the flowing condition of a reactor core. After the scalable rod bundle channel multi-physical field visual body design is adopted, shooting is performed respectively on the top face and the four side faces, so that overall real-time measurement is realized; the shooting content is diverse. The design provided by the invention is ingenious; the visual rod bundle is straightened and fixed by means of the rod bundle fastening piece; the rod bundle fastening piece is reasonable in design; a telescopic corrugated pipe is adopted as the lower part transition section, so that the body is enabled to be safe and reliable. The scalable rod bundle channel multi-physical field visual body design is simple and compact in structure, easy in processing, convenient for observation and wide in experimental range.

The invention relates to the field of casting production of internal cooling oil channel pistons, in particular to a flexible salt core taking, placing and positioning system based on visual recognition. The flexible salt core taking, placing and positioning system comprises a robot, a flexible taking-placing paw, an integrity degree detection visual system and positioning and recognition visual systems. According to the flexible salt core taking, placing and positioning system based on the visual recognition, the tough clamping force of three-jaw air cylinders is converted into the gentle clamping force of clamping springs, so that the damage to a salt core which is relatively low in strength and toughness and easy to break is avoided; limiting blocks are used for limiting the eccentricity of fingers, and the positioning precision is guaranteed within the allowable tolerance range; the integrity of the salt core is judged through the integrity detection visual system; the angle of thesalt core is accurately adjusted through the positioning and recognition visual systems and servo motors; and meanwhile, stroke adjusting nuts are adjusted so that the flexible salt core taking, placing and positioning system can be compatible with the salt cores of various specifications and sizes, and has a wider application range.

The invention provides high-springback high-stretching clothing leather and a preparation method thereof.The method includes the following steps that 1, after release paper is directly coated with size of a surface layer, hot air drying is conducted, and cooling is conducted; 2, coating of size of a foaming middle layer is conducted, hot air drying is conducted, and cooling is conducted; 3, coating of size of a bottom layer is conducted, then base cloth is laminated through a laminating machine, then hot air drying is conducted, and cooling is conducted; 4, the release paper is stripped, and the high-springback high-stretching clothing leather is obtained.The obtained high-springback high-stretching clothing leather perfectly combines the elasticity of four-directional elastic fabric and the elasticity of a polyurethane layer, and the leather is soft in handfeel, resistant to wrinkling, high in real leather sense and especially sufficient in elastic force, and can meet the requirements of the clothing leather market for elastic clothing leather.

The invention provides a BRB inclined and X-shaped arranged dry-type connection fabricated reinforced concrete frame structure. The structure is formed by combining a prefabricated beam-column combined component (1), a prefabricated beam (2), an embedded part connecting plate (3), an anti-buckling support end part (4), an anti-buckling support BRB (5), a column-column connecting joint (6) and a beam-column combined component connecting joint (7). The BRB inclined and X-shaped arranged dry-type connection fabricated reinforced concrete frame structure is characterized in that the prefabricatedbeam-column combined component (1) and the prefabricated beam (2) are connected through the dry-type connecting joint (6), and the prefabricated beam-column combined component (1) and the beam-columncombined component (1) are connected through the dry-type connecting joint (7), so that the fabricated reinforced concrete frame structure is formed; and on the basis, the anti-buckling support (5) isarranged and combined with the fabricated reinforced concrete frame structure into a whole through the embedded part connecting plate (3) and the anti-buckling support end part (4). According to theBRB inclined and X-shaped arranged dry-type connection fabricated reinforced concrete frame structure, the defect that a dry-type connecting joint in an existing fabricated damping structure is proneto being damaged under a strong earthquake is overcome, and the bearing capacity of the damping component BRB and the energy dissipation capacity in the earthquake are fully exerted; and meanwhile, the damping component BRB can be replaced after the earthquake and has the function recoverability, so that the provided structure has the advantages of being easy to assemble, replaceable, good in anti-seismic property and the like, and further development of the fabricated concrete structure can be promoted.

The invention provides a preparation method of wheat hydrolyzed malt extract which comprises the steps of, screening wheat raw material, disintegrating, beating, liquefying, saccharifying, filtering, wherein the liquefaction phase can be added with maxilase, fire resistant alpha-amylase, prolease 1, polysaccharase.

The invention provides a mechanized seedling transplanting technique of potted blanket seedlings. The mechanized seedling transplanting technique comprises the following steps of: (1) curling a whole tray of cultured potted blanket seedlings and conveying the potted blanket seedlings onto a seedling box plate of a seedling transplanter; (2) taking the potted blanket seedlings out of the seedling box plate by a seedling capture mechanism of the seedling transplanter and then putting the potted blanket seedlings on a primary seedling conveying belt of the seedling transplanter, wherein the included angle between the primary seedling conveying belt and the ground of a paddy field is adjustable; (3) conveying the potted blanket seedlings to a secondary seedling conveying belt of the seedling transplanter by the first seedling conveying belt; and (4) conveying the potted blanket seedlings to the ground of the paddy field at a certain speed by the secondary seedling conveying belt, wherein the direction of motion of the potted blanket seedlings is perpendicular to the ground of the paddy field at the moment that the potted blanket seedlings leave the secondary seedling conveying belt. The path of the seedlings falling to the ground is changed by changing the included angle between the primary conveying belt and the ground of the paddy field, and therefore, the purpose of regulating the line spacing of the seedlings is achieved; the included angle can be adjusted continuously, and correspondingly, the line spacing of the seedlings can be adjusted in a stepless manner. The mechanized seedling transplanting technique is adaptive to different seedling raising systems, scientific optimized planting is realized, and the yield of rice can be improved to a certain extent.

The invention relates to a process for extracting gardenia yellow from gardenia. The process comprises the following steps of: crushing raw materials, performing water diacolation for extracting, performing micro-filtration, performing macroporous resin column chromatography, separating and purifying, concentrating and drying products and activating and regenerating columns, wherein in the step of performing water diacolation for extracting, dry gardenia fruits are crushed into large granules, and the large granules are soaked in pure water and are subjected to the diacolation at normal temperature to be extracted; in the step of performing micro-filtration, a water extracting solution is subjected to the micro-filtration by using 0.2 to 1 micrometer of ceramic membrane to obtain a completely-clarified filtrate; in the method for performing loading adsorption continuously, three sections of columns are connected in series to perform the loading adsorption, and the third section of column is separated and purified further; and in the step of activating and regenerating columns, the efficient macroporous resin columns are separated continuously under high pressure and are activated and regenerated on line. According to the process, a constant pressure technology is upgraded to a pressurization technology, so that the adsorptive capacity and separation efficiency of the resin columns are improved; and according to the high-end gardenia yellow products, the color scale of the prepared gardenia yellow is over 500, an optical density (OD) value is below 0.2, and the content of geniposide is less than 1 percent by high performance liquid chromatography (HPLC) detection on the basis of the color scale of 500.

The invention discloses fiber crystal toughened high-strength superfine crystal pure titanium and a preparation method thereof. The microstructure is formed by mixing fiber grains with isometric superfine grains, the length ratio of the long axes of the fiber crystal grains to the length of the short axes is greater than 10 and the size of the short axes is 200 nanometers to 3 microns, and the size of the isometric superfine grains is 50 nanometers to 1 microns. The volume fraction of the fiber grains is 20%-60%, the preparation method of the fiber crystal toughened high-strength superfine crystal pure titanium comprises the following steps that (1), the grain orientation of pure titanium is adjusted through one to two passes of drawing, so that a titanium rod material is obtained; (2), high-strain rotary forging is carried out in a one to three passes; (3), low-temperature annealing is carried out; (4), multi-pass low-strain rotary forging is carried out; and (5), the fiber crystal toughened high-strength superfine grain pure titanium is obtained after annealing. The strong toughness of the pure titanium prepared by the method is far higher than that of coarse grain pure titanium,the application of the alloy titanium in the aspect of biological implants and medical instruments can be preferably replaced, and the method is suitable for large-scale preparation of large-size pure titanium.

The invention discloses a rhizome traditional Chinese medicinal material slicing device. The device is characterized by comprising a rack I, a feeding mechanism, a sorting shaft, a positioning mechanism, a slicing mechanism, a discharging groove and a motor I. The feeding mechanism is fixed to the rack I, the sorting shaft is arranged on the feeding mechanism and located between a feeding hopper and the positioning mechanism, the positioning mechanism is arranged between the sorting shaft and the slicing mechanism, and the positioning mechanism and the slicing mechanism are fixed to the rack Iand located above the feeding mechanism. The discharging groove is formed in the outlet end of the feeding mechanism, and the motor I is fixed at the bottom of the rack I and is connected with the feeding mechanism. The slicing device is simple in structure, and rhizome traditional Chinese medicinal materials are conveyed by the feeding mechanism, fixed through the positioning mechanism and sliced. The device has the characteristics of being easy and convenient to operate, high in slicing efficiency and uniform in slicing.

The invention provides a method of silver paste grouting process for high-precision circuit boards. The method comprises the following steps: polishing the green oil plane of the circuit board downwards so as to smoothen the plane of the circuit board; packaging and fixing a grouting tool on the table plane of a silk-screen machine; aligning the screen and regulating the screen distance so as to align a pattern adopted by a screen board with a pattern desired by a produced machine type; regulating angles of a scraper and a turning knife of the silk-screen machine; further regulating the silk-screen pressure and regulating the viscosity of the silver paste; then grouting from the green oil plane to the back plane; placing the grouting circuit board statically for more than 4H; putting the grouting circuit board in an oven of 50-150 DEG C to be baked in three sections; and finally cooling and taking out of the oven so as to obtain the high-precision circuit board. The circuit board produced by the method is not only small in size and thickness, but also saves energy and electricity, has excellent stability, good conductivity, strong smoothness and reliability and excellent printing ability, bending ability and extremely strong adhesion; and the method has the characteristics of being low in temperature, rapid in curing production period, high in cost performance, low in cost, free of the three waste pollution and the like.

The invention provides a method used for chemical ionization of straight-chain alkanes. The method comprises following steps: 1, physical-chemical process is adopted for treatment of metal so as to obtain single-core metal ions; 2, the single-core metal ions obtained in step 1 are delivered into a reaction tube with a buffer gas; 3, the instant pressure of gaseous straight-chain alkanes to be detected is adjusted, the gaseous straight-chain alkanes are delivered into the reaction tube, and ionization products are obtained via reaction of the gaseous straight-chain alkanes with the single-core metal ions in the reaction rube; and 4, the ionization products are delivered into a detector for detection. According the method, chemical reaction of the single-core late transition metal ions of late transition metals with the gaseous straight-chain alkanes under certain pressure conditions is realized, so that product ions capable of reflecting straight-chain alkane original molecular weight are obtained, reaction efficiency is extremely high, and high efficiency chemical ionization of straight-chain alkanes can be realized without fragmentation.

The invention relates to an automobile induction manifold material and a preparation method thereof and in particular relates to a hollow blow-molding automobile induction manifold material and a preparation method thereof. The material prepared by the invention is prepared from the following components in parts by weight: 40 to 60 parts of polypropylene, 5 to 30 parts of polypropylene with high melt strength, 1 to 10 parts of high-density polyethylene, 30 to 50 parts of reinforcing fiber, 1 to 10 parts of an interface modifying agent, 1 to 10 parts of a flowing synergist, 0.5 to 3 parts of anantioxidant, 0.5 to 4 parts of a lubricating dispersant and 0.2 to 2 parts of a nucleating agent. The invention further discloses the preparation method of the hollow blow-molding automobile induction manifold material. The material provided by the invention has good sag resistance and melt tensile strength; optimized regulation and control of wall thickness of a product can be realized in a blowmolding process of a manifold, so that the material has good mechanical properties and high and low temperature resisting properties; the product has high size stability and good welding performance;compared with a nylon manifold, the weight reduction exceeds 20 percent and same-speed production of an existing molding technology and a post-molding technology are met; furthermore, the preparationmethod has the advantages of shorter molding period, low production cost and high product yield and industrialized production is easy to realize.

The invention discloses an opposite-roller type pitting machine which comprises a machine frame, a rubber roller, a toothed roller, a pit pressing mechanism, a shell, a main drive motor and a pit pressing motor, wherein the rubber roller, the toothed roller, the pit pressing mechanism, the shell, the main drive motor and the pit pressing motor are installed on the machine frame; a rotating shaft of the rubber roller and a rotating shaft of the toothed roller are mutually parallel; a material processing gap is formed between the rubber roller and the toothed roller; the main drive motor drives the rubber roller and the toothed roller to rotate oppositely through a transmission mechanism; the pit pressing mechanism is arranged right above the material processing gap; the pit pressing motor drives the pit pressing mechanism to move up and down through a transmission mechanism; the shell is arranged on the outer side of the rubber roller, on the outer side of the toothed roller and on the outer side of the pit pressing mechanism; a feeding hopper is arranged on the shell, a pit discharging hopper is arranged under the rubber roller, and a pulp discharging hopper is arranged under the toothed roller. The opposite-roller type pitting machine is compact and reasonable in structure, small in occupied space, high in integration level and capable of effectively separating pulp from pits for stone fruits and guaranteeing that the pits are unbroken.

The invention relates to synthesized engine lubricating oil with high temperature and evaporation prevention performance and a preparation method of the synthesized engine lubricating oil. The lubricating oil is composed of, by weight, 75-78 parts of class III base oil, 13-16 parts of lubricating oil composite additives, 7.5-8.5 parts of star-shaped isoprene-styrene copolymers, 0.3 part of polymethacrylate and 0.001 part of deforming agent. The synthesized engine lubricating oil can resist high temperature and evaporation, and has excellent comprehensive performance of a lower pour point, ultra-strong cold start and a high flash point. The low-temperature lubricating property of the lubricating oil can be ensured. It can be ensured that oil films do not crack when the revolution number of an engine is large. The synthesized engine lubricating oil is stable in physicochemical property and is totally-synthesized multi-stage engine oil high in adaptability, easy to store and high in cost-performance ratio; meanwhile, the invention provides the preparation method of the lubricating oil, and the preparation method has the advantages of being simple in process and convenient to operate.

The invention provides an apple cleaning machine for cleaning with centrifugal force. The cleaning machine comprises a cleaning drum, a bucket and a top cover, wherein the top cover is connected to the top of the cleaning drum in a nested and clamped manner, the bucket is arranged on one side of the cleaning drum, foot rests are welded to the bottom of the bucket and the bottom of the cleaning drum; the cleaning drum comprises an electric motor, a waterproof bearing, a sponge drum, a rotating shaft, a scale line, a glass plate, a support rod and a stirring block; the electric motor is welded to the bottom of the cleaning drum; and the waterproof bearing and the rotating shaft are arranged at the top of the electric motor. According to the apple cleaning machine, the rotating shaft is driven to rotate clockwise by the electric motor, and the mixing block at the top of the rotating shaft is used for stirring water in the cleaning drum, so that the water forms a vortex clockwise in the cleaning drum, apples on the water surface rotate clockwise to rub a sponge layer, and through cooperation with the centrifugal force generated in the rotating process of the apples, the skin of the apples can be thoroughly cleaned without being cleaned with a brush, and the condition that the skin of the apples is damaged, can be avoided; and in the combined cleaning manner, the cleaning effect isthorough.

The invention relates to a hinge type large-tonnage anchor device, comprising a hinge type large-tonnage anchor device A and a hinge type large-tonnage anchor device B which are both provided with limiting rings at the outer side faces; limiting holes are arranged on the limiting rings; the hinge type large-tonnage anchor device A and the hinge type large-tonnage anchor device B are connected through accessory bolts so as to enable the two anchor devices to rotate relatively; lock catches are arranged on the inner side surfaces of the hinge type large-tonnage anchor device A and the hinge type large-tonnage anchor device B; lock holes are arranged on the lock catches; when the lock catches arranged on the inner side surfaces of the hinge type large-tonnage anchor device A and the hinge type large-tonnage anchor device B are matched with each other, the lock holes at least partially overlap and a bolt is inserted into the overlapped hole; a wire rope is connected at the tail part of the bolt; and when the hinge type large-tonnage anchor device A and the hinge type large-tonnage anchor device B need to be separated with each other, an operator can pull the wire rope and then pull out the bolt.

The invention provides a radial-inward-flow turbine device with a shock-absorbing damping function and a sealing structure. During work, a working medium enters the radial-inward-flow turbine device through an air inlet volute firstly, and then enters nozzle rings, the pressure of the high-temperature and high-pressure working medium is gradually decreased, the flowing speed is gradually increased, the working medium at outlets of the nozzle rings enters from an inlet of an impeller and does work through expansion in the impeller, and the pressure and the temperature are gradually decreased; and in the impeller, the working medium is subjected to flow guiding by closed flow channels formed by blade inlet shrouds and a hub firstly, then arrives at the middles of impeller blades of a radial-inward-flow turbine to continue doing work through expansion, and finally passes through closed flow channels formed by blade outlet shrouds and the hub, and the low-pressure and low-temperature working medium is discharged from the radial-inward-flow turbine device through an outlet flow channel. The radial-inward-flow turbine device adopts the shroud structures at inlets and outlets of the blades, by matching brush-type sealing between an impeller cover and the impeller blades, the aerodynamic efficiency of the radial-inward-flow turbine device is improved while rigidity is improved significantly, vibration response is lowered and operating safety is ensured, and the radial-inward-flow turbine device has important engineering significance and wide application prospects.

The invention belongs to the technical field of processing of tea leaves, and particularly discloses a preparation method of white tea. The preparation method of white tea disclosed by the invention comprises the following steps of (1) performing cyclical withering and micro fermentation treatment: performing withering on picked fresh tea leaves under the illumination of first green light, performing micro fermentation, then performing soft pressing and rolling, performing withering on rolled tea leaves under the assistance of second green light, performing micro fermentation once again, and performing withering on the tea leaves after micro fermentation for the second time under the illumination of blue light; (2) performing steam treatment: treating the withered tea leaves through steam,and then performing spreading for cooling; (3) performing strip tidying; and (4) performing drying: performing baking treatment for the second time on the tea leaves. Compared with a traditional white tea preparation method, the preparation method of white tea disclosed by the invention has the advantages that the prepared white tea is rich and long in fine long hair fragrance, mellow, sweet andrefreshing in taste, high in shape quality, good in aesthetic quality and high in the rate of finished products.

The invention discloses self-igniting green bricks based on construction wastes. The self-igniting green bricks are prepared from the following raw materials in parts by weight: 30-45 parts of concrete blocks, 15-25 parts of waste plastics, 10-16 parts of asphalt, 20-30 parts of clay, 10-16 parts of mud, 8-14 parts of waste bamboo wood, 10-20 parts of coal and a right amount of water. The self-igniting green bricks are prepared by taking the construction wastes as a main raw material, thus greatly reducing the cost of brick making, solving the pollution, caused by the construction wastes, to the environment, and being also in line with the sustainable development of green environmental protection; furthermore, a large amount of fuel is saved in a kilning process; the raw materials in the green bricks are used for firing bricks by means of self-ignition; therefore, the self-igniting green bricks based on the construction wastes have a good market application prospect, solve the troubleof the construction wastes to construction sites and the problem of centralized stacking, avoids environmental pollution and are conducive to environmental protection.

The invention relates to an active and passive support-coupled integral coordination bearing structure for an arched roadway and a method, and belongs to the field of coal mine safety support. The structure comprises a plurality of miner steel sheds distributed in parallel, each miner steel shed comprises a top beam and column legs, five holes are uniformly formed in the top beam, three holes in the center are anchor cable holes, the other two holes are anchor rod holes, and an anchor rod hole is formed in a web plate in the middle of each column leg; an anti-impact connecting component is arranged between the top beam and each column leg; two rows of parallel inter-shed channel steel A are laid on the parts, close to the two sides, of a roadway bottom plate, and the bottoms of the column legs of each miner steel shed are inserted into the inter-shed channel steel A; and two adjacent miner steel sheds are connected into a whole through a longitudinal connecting device. According to the structure and method, yielding can be buffered, tight and strong connection between an active supporting structure and a passive supporting structure are achieved, stress and deformation are coordinated, the integrity of the supporting structure is greatly improved, the supporting quality of the roadway is improved for a mining roadway, and meanwhile floor heaving can be prevented to a certain degree.

The invention relates to the technical field of gelling materials, and aims to provide a high temperature-resistant composite cement-based material suitable for being used in a high temperature environment, and a preparation method thereof. Powder raw materials include, by weight, 60-70 parts of slag, 20-30 parts of metakaolin, 5-10 parts of calcined bauxite, 4-8 parts of aluminum hydroxide, 0.0001-0.0005 part of composite ecological fibers, 0.005-0.0015 part of steel fibers and 0.1-0.2 part of a YP-3 set retarder; and a liquid raw material includes 45-65 parts by weight of a water glass solution. The preparation method has the advantages of utilization of industrial byproducts, greenness and energy saving; and the above product has a long setting time, can meet normal construction requirements, has excellent mechanical properties and excellent high temperature resistance, has a higher strength than 52.5 grade ordinary Portland cement, and can guarantee no destroy of the structure at ahigh temperature of 1000 DEG C.

The invention discloses a method for in-situ growth of copper oxide nanoparticles on a graphene matrix. Through the method for in-situ growth of the copper oxide nanoparticles on a lamellar structure of a graphene sheet, an anode material suitable for a lithium ion battery is obtained. Compared with the prior art, the method disclosed by the invention has the advantages that a copper oxide / graphene nanocomposite material prepared by the method can play an elastic buffer role in volume change generated in lithiation / lithium deintercalation and intercalation processes, so that an electrode material is not broken, so as to enhance the stability of the battery anode. In addition, according to the material, the reversible capacity of the lithium ion battery can be enhanced; good circulation capability of the battery can be kept; the electrochemical property of a high-insulativity electrode material can be improved to the maximal extent; the rate capability is high; the operation is simple and convenient; and the material is saved.

The invention discloses a method for improving the strength of iron ore concentrate green pellets. The method comprises the following steps: adjusting the pH value of a sodium humate solution with a certain concentration to be 6.0-8.0 by using acid, then uniformly adding the sodium humate solution to the surface of iron ore concentrates, performing wet-grinding pre-treatment after uniform mixing, and pelletizing. The method is simple in operation and low in cost, is suitable for pelletizing various iron ore concentrates, and is particularly suitable for pelletizing iron ore concentrates which are difficult to pelletize; moreover, the use amount of the sodium humate is small, and the falling strength and compression strength of the prepared green pellets are obviously improved to meet requirements for pellet production.

The invention discloses a grounding structure of a microwave oven heater, which comprises a heater 40 and a grounding wire 50 connected with the heater 40; one end of the heater 40 exposed out of an oven body of the microwave oven is pressed by a copper sleeve tube 41 to be fixed with a grounding wire terminal 42; one end of a lead wire 52 of the grounding wire 50 is provided with a grounding ring51 fixed with the oven body of the microwave oven, and the other end of the lead wire 52 of the grounding wire 50 is provided with an inserting terminal 53; and the inserting terminal 53 is connectedwith the grounding wire terminal 42 of the heater 40 in an inserting way. The grounding structure of the microwave oven heater has the advantages of simple and convenient assembly, good firmness andstrong toughness. Components such as the grounding wire connected with the heater and the like can not be damaged even though the heater is operated for ten thousand times so as to ensure that the wire body can not be broken and greatly improve the safety performance of the microwave oven. The grounding structure has great significance for production practice.

The invention relates to the technical field of water meters, and specifically discloses an antifreeze and antifreeze intelligent water meter, which includes a water meter casing, a water meter movement, water meter glass and a copper cover, the water meter movement is arranged in the water meter casing, and the copper cover is fixed Above the water meter casing, the water meter glass is embedded in a copper cover, and the water meter glass includes a first circular platform and a second circular platform, the diameter of the first circular platform is greater than the diameter of the second circular platform, and the second circular platform Set on the first round table. The antifreeze and antifreeze intelligent water meter of the present invention replaces the original toughened glass with the convex antifreeze glass of the water meter made of transparent nylon, so that the water meter has better antifreeze performance and can withstand minus 30°C without affecting the reading of the water meter. Under the environment, ensure that the water meter does not break or leak, and does not affect the normal living water of residents.

The invention discloses a crown-shaped composite material honeycomb interlayer antenna housing and a forming tool and method thereof. The antenna housing is made of a composite material and a honeycomb interlayer and comprises a housing shell part and a housing edge part; the housing shell part is provided with a honeycomb sandwich layer, and the housing edge part is provided with a glass fiber reinforced layer, so that the required mechanical strength is achieved under the condition that the wave transmission rate is not influenced, the weight of the antenna housing is greatly reduced, and the lightweight design is facilitated; according to the antenna housing forming tool, a flexible cover plate is adopted for assisting a male die assembly to form the antenna housing, the flexible cover plate is good in shape follow-up performance, the inner surface of the flexible cover plate is made of the carbon fiber fabric, the appearance smoothness and the molded surface precision of the antenna housing can be guaranteed, and concaves and rubber edges are effectively prevented from being generated on the surface of an antenna; the male die is provided with a demolding ejection device, so that demolding is facilitated; and the antenna housing forming tool is used for antenna housing forming, the method is simple, the effect is remarkable, and the antenna housing forming tool has very good use value.