Welding material for rapidly welding and repairing defects of large-scale grey iron casting and repairing method thereof

The invention discloses a welding material for rapidly welding and repairing defects of a large-scale grey iron casting, comprising the following components in percentage by weight: 33%-38% of Fe2O3, 27%-30% of Al, 1.4%-1.6% of Na2CO3, 4%-6% of Na2B4O7, 4%-6% OF CaF2 and 7%-10% of CaO7, wherein when the material is used for a large-scale HT150 grey iron casting, the material further comprises 4%-5% of G, 7%-10% of pig iron and 5%-8% of SiO2; when the material is used for a large-scale HT200 grey iron casting, the material further comprises 4%-5% of G, 7%-10% of pig iron, 4%-6.5% of 75 Si-Fe, 0.5%-3.2% of Ni and 0.1%-0.5% of Bi, based on the total weight of 100%; and when the material is used for a large-scale HT250 grey iron casting, the material further comprises 3%-4% of G, 6%-10% of pig iron, 4%-6% of 75 Si-Fe, 0.5%-3.2% of Ni, 0.1%-0.5% of Bi, 0.5%-1.8% of Ti, 1.8%-2.4% of 60Si-Ca and 0.5%-3.2% of Al2O3, based on the total weight of 100%. The invention discloses a method for rapidly ...

Preparing process of mezlocillin

The invention relates to a technique for preparing mezlocillin, belonging to the medicine compound preparation technology, wherein the mezlocillin is prepared by acylation reaction between aminobenzyl trihydrate and 1-chloroformyl-3mesyl-2-imidazolidone under the catalysis of an alkaline substance and then addition of an acidulant for acidification and crystallization. The technique for preparing the mezlocillin is characterized in that: ethyl acetate is added into a solution before acidification; the acidulant is added into the solution for two times, and the acidulant added for the first time is required to achieve the effect that the feed solution has turbidity; an inoculating crystal is added into the feed solution for growing the crystal for 30 to 40 minutes, and then the residual acidulant is dripped; and the pH value of the feed solution is adjusted to between 1.6 and 2.0, and then the feed solution undergoes temperature reduction and crystallization. The technique for preparing ...

High-entropy alloy welding wire for TIG (tungsten inert gas) welding of titanium and steel and preparation method

The invention discloses a high-entropy alloy welding wire for TIG (tungsten inert gas) welding of titanium and steel. The high-entropy alloy welding wire comprises, in total atomic percent of 100%, 30-33% of Zr, 8-12% of Cu, 15-18% of Fe, 20-24% of Ni and 20-24% of Be. The invention further discloses a preparation method of the high-entropy alloy welding wire for TIG welding of the titanium and the steel. The amorphous high-entropy alloy welding wire is fine in smelting and machining property and low in manufacturing cost, and the preparation method and the process of the welding wire are simple. The titanium/steel TIG welding process by the amorphous high-entropy alloy welding wire is simple, the welding wire is effectively matched with the titanium and the steel, a welding zone is crack-free, a welding line is basically a single-phase solid solution texture, and the general mechanical performance of a joint is high.

Nickel-based alloy interface layer, and its new TLP welding high temperature alloy technology

The invention discloses a nickel-based alloy interface layer for TLP welding. The interface layer comprises 3.2-3.5% of B, 2.4-3% of Si, 0.2-0.4% of Nd, 3-4% of Co, 1-2% of Cr, 2.5-3% of W, 1.2-2% of Ti, 1.5-2.5% of Al, 2-3% of Mo, and the balance of Ni, and the total percentage of the above atoms is 100%. The invention also discloses an application method of the interface layer alloy in TLP welding-solid solution heat treatment. The interface layer alloy can be applied in the TLP welding-heat treatment in order to greatly reduce the heat treatment time, save energy, reduce emission and greatly reduce the making cost.

Device for detecting flue gas in flue

The invention discloses a device for detecting flue gas in a flue. The device comprises a first pipe body and a second pipe body, which are arranged on two opposite side walls of the flue (A) and are sequentially arranged along a same light beam path; the light beam path is crossed with a flowing path of the flue gas in the flue (A); light transmission sheets, which are used for separating inner cavities of the first pipe body and the second pipe body from an external environment, are arranged at the parts, positioned at the periphery of the flue (A), of the first pipe body and the second pipe body; a laser transmitting assembly and a laser receiving assembly are arranged outside the two light transmission sheets, respectively; gas nozzles, which are used for spraying gas curtains to prevent dust in the flue gas from entering the pipe cavities of the first pipe body and the second pipe body, are arranged at pipe end orifices, extending into the flue (A), of the first pipe body and the second ...

Phase shifter

The utility model discloses a phase shifter, phase shifter includes: roof and bottom plate, left side board and right side board, the left side integrated circuit board is adorned on roof and bottom plate, and the right side integrated circuit board is adorned on roof and bottom plate, baffle, baffle are established on holding the intracavity and clamp at least one in left side board and right side board, go up the dielectric plate, go up the dielectric plate establish last hold the intracavity and clamp at least one in left side board and right side board on, on lower dielectric plate, lower dielectric plate are established and are held the intracavity and clamp at least one in left side board and right side board under, go up the coaxial cable, upward the outer conductor of coaxial cable passes left side board or right side board and continuous with last dielectric plate with left side board or the continuous just inner conductor of right side board, lower coaxial cable, outer conductor ...

Artificial intelligence digital doctor diagnosis and treatment system

The invention relates to the technical field of online medical diagnosis and treatment, and discloses an artificial intelligence digital doctor diagnosis and treatment system which comprises a man-machine interaction device and an information processing platform. The man-machine interaction equipment comprises basic detection equipment, an information processing system and a warning module, and the man-machine interaction equipment is mainly used for sorting patient information and carrying out association processing on the patient information and the information processing platform; the information processing platform comprises a diagnosis and treatment database, a patient information screening module and an information feedback module, and the information processing platform is mainly used for standardizing and strictly processing the obtained patient information and giving treatment suggestions to the patient. According to the artificial intelligence digital doctor diagnosis and treatment ...

Stable compact type laser-transceiving integrated detection light path structure

The invention discloses a stable compact type laser-transceiving integrated detection light path structure. The stable compact type laser-transceiving integrated detection light path structure comprises a laser transceiving device and a pyramid reflector device, wherein laser output by a host laser of a monitor is coupled by an external transmission optical fiber flange, so as to enter a tail fiber in a covering cylinder, the laser is conducted to a laser alignment mirror by the tail fiber, the laser is emitted from a receiving mirror in a center opening after being aligned, passes through a sealing window mirror and a target gas detection area and then arrives at an opposite pyramid reflector of the pyramid reflector device, so as to form a reflected light beam and return along the direction of a main light path, the extended return light beam is received and laterally reflected and focused by the receiving mirror, so as to arrive at a receiving lens and a detector which is used for detecting ...

Respiratory disease whole-process management oxyhydrogen treatment big data platform

The invention relates to the technical field of health management, and discloses a respiratory disease whole-process management oxyhydrogen treatment big data platform, which comprises a big data analysis platform, an information acquisition platform, an intelligent terminal and oxyhydrogen treatment equipment, the collected health data are uploaded to a big data analysis platform; the big data analysis platform comprises a data processing module, a data storage module, a cloud storage module and an information feedback module, and the data storage module is used for fully storing the information uploaded by the information acquisition platform; and the data processing module is used for analyzing and sorting the information uploaded by the information acquisition platform, screening out useful information and uploading the useful information to the cloud storage module for storage. According to the respiratory disease whole-process management oxyhydrogen treatment big data platform, respiratory ...

V -arrangement mix the dry machine

The utility model discloses a V -arrangement mix the dry machine, including U -shaped base (1) and V -arrangement barrel (2), the both ends at U -shaped base (1) top are equipped with the axle, and V -arrangement barrel (2) are connected between the axle at both ends, and wherein epaxial still be equipped with encoder (3) of one end are equipped with PLC and switch in U -shaped base (1), and PLC is connected with encoder (3) and switch. The utility model discloses can directly set up the number of turns that needs, can the automatic shutdown having mixed after, need not the manual operation switch, and to the similar and weight the average person material of kind, only need set up the same number of turns can mix the dry, need not to observe the degree mixed and drying in addition again, more simple and convenient.

Buffer applying to driving circuit and driving method applying to load device

The invention relates to a buffer applying to a driving circuit and a driving method applying to a load device. The buffer applying to the driving circuit comprises a first transistor, a second transistor and a conversion rate control circuit, wherein the first transistor is used for supplying current to an output end, and the second transistor is used for drawing current from the output end; and the conversion rate control circuit is used for controlling the conversion rate of at least one of the first transistor and the second transistor according to input signals, and a regulating and controlling circuit is used for preventing the first transistor and the second transistor from conducting simultaneously.

Automatic detection and adjustment device for height position of die table of forming machine

The utility model relates to an automatic detection and adjustment device for the height position of a die table of a forming machine, which comprises a rack, the die table and a height adjustment mechanism capable of adjusting the height position of the die table, the automatic detection and adjustment device is characterized by further comprising a control device and a linear displacement sensor, the linear displacement sensor is installed on the rack and located on one side of the die table, and a measuring part of the linear displacement sensor is connected with the die table; the linear displacement sensor is electrically connected with the corresponding input end of the control device, and the height adjusting mechanism is electrically connected with the corresponding output end of the control device. According to the utility model, not only can the accuracy of adjusting the height position of the die table be improved, but also the workload of data conversion in a program can be ...

Information communication system and method thereof

Water-based semi-PU adhesive slurry and preparation method thereof

The invention discloses water-based semi-PU adhesive slurry and a preparation method thereof. The preparation method comprises the following steps: in the dispersed state of solvent-free water-based polyurethane-acrylate resin, sequentially adding a water-based defoamer, a leveling agent, a substrate wetting agent and a filler; after uniform dispersion of the filler, adding a cross-linking agent and a thickening agent, wherein the water-based semi-PU adhesive slurry comprises the following raw materials in parts by weight: 100 parts of solvent-free water-based polyurethane-acrylate resin, 0.5 part of the water-based defoamer, 1-2 parts of the leveling agent, 0.5-3 parts of the substrate wetting agent, 0.5-2 parts of the thickening agent, 1-2 parts of the cross-linking agent and 10-20 parts of the filler. The water-based semi-PU adhesive slurry prepared by the preparation method is safe, and environment-friendly in production, transportation and using processes, and is free of organic solvents ...

Preparation method of high-purity chiral sulphoxide compound

The invention discloses a preparation method of a high-purity chiral sulphoxide compound, which has high raw material utilization ratio and a simple process. The method comprises the following steps of: adding an alkoxytitanium compound and chiral ligand amino indanol into an organic low-polarity or nonpolar solvent, wherein the molar ratio of the alkoxytitanium compound to the chiral ligand amino indanol is 1:(1.5-3); adding pure water; stirring at the temperature of 25-100 DEG C for 1-2 hours to obtain a chiral catalyst titanium complex; adding thioether corresponding to the chiral sulphoxide compound into a solution of the obtained chiral catalyst titanium complex, wherein the molar ratio of the thioether to the chiral catalyst titanium complex is 1:(0.1-1); adding amine, wherein the molar ratio of thioether to amine is 1:(0.1-0.5); stirring, controlling the temperature between 10 DEG C below zero and 50 DEG C and dropwise adding an oxidant; raising the temperature to 30 DEG C and preserving ...

Flux-cored alloyed cast iron homogeneous gas-welding wire and electric welding rod

The invention discloses a flux-cored alloyed cast iron homogeneous gas-welding wire which consists of H08A steel strip and alloyed flux-cored powder cladded in the H08A steel strip, and the flux-cored powder comprises the components based on the weight percentage: 15-25% of graphite, 50-60% of 75 Si-Fe, 10-15% of Ni, 2.0-4.8% of Ti, 3.8-6.0% of Al, 0.8-2.5% of Bi, 0.1-0.3% of Ba, 0.5-1.8% Ce and 0.1-0.3% of RE, and the total weight percentage is 100%. The invention also discloses a flux-cored alloyed cast iron homogeneous electric welding rod, a flux-cored welding core of which consists of the H08A steel strip and the alloyed flux-cored powder cladded in the H08A steel strip, and the coating applied on the welding rod comprises the components based on the weight percentage: 20-30% of marble, 10-16% of potassium feldspar, 5-12% of scale graphite, 6-10% of clay graphite, 15-25% of 75 silicoferrite, 3-7% of 30 calcium silicon alloy, 3-7% of aluminium powder, 3-7% of ferrous powder, 10-15% ...

Drawing and releasing mechanism capable of automatically releasing liquid detergent, feeding box and washing machine

The utility model provides a drainage mechanism capable of automatically feeding liquid detergent, which comprises a piston connecting rod assembly, a valve core assembly, a first driving assembly anda second driving assembly, one end of the valve core assembly is connected with a valve core rotating shaft, and the other end is connected with a plurality of drainage cavities; one side of the drainage cavity is in one-way communication with a detergent storage cavity, and the other side is provided with a one-way discharge port; a first through hole is formed in the valve element rotating shaft in the axial direction, one end of the piston connecting rod assembly is movably arranged in the first through hole, and the first through hole is selectively communicated with a target drainage cavity through the valve element assembly. The utility model further provides a feeding box and a washing machine. According to the utility model, automatic feeding of two, three or more liquid detergents ...

9-(2-phosphatidyl methoxy ethyl)-adenine crystal and preparation method thereof

The invention relates to a 9-(2-phosphatidyl methoxy ethyl)-adenine (PMEA) crystal and a preparation method thereof. The X-ray diffraction spectra data of the PMEA crystal are respectively 14.740, 18.640, 20.720, 23.420, 24.420, 25.560, 26.880 and 29.880, wherein Cu-Ka radiation is used and the diffraction angle is shown as 2Theta. The PMEA crystal is beneficial to preparing an antiviral drug, i.e. 9-[2-[di (pivoxil) phosphatidyl methoxy] ethyl]-adenine (adefovir dipivoxil).

High-entropy alloy welding wire for welding titanium-steel and preparation method thereof

The invention discloses a high-entropy alloy welding wire for welding titanium-steel. The high-entropy alloy welding wire consists of the following components by atomic percent: 30 to 33 percent of Zr, 8 to 12 percent of Ti, 15 to 18 percent of Fe, 20 to 24 percent of Ni, 20 to 24 percent of Be, and the total percentage is 100 percent. The invention also discloses a preparation method of the high-entropy alloy welding wire for welding the titanium-steel. The preparation method comprises the following steps of step 1, melting master alloy; and step 2, preparing the amorphous high-entropy alloy welding wire by utilizing a metal spinning technology. By adopting the high-entropy alloy welding wire, the process for TIG welding titanium-steel is simiple, the welding wire is well matched with the titanium and steel, no crack exists in the welding area, the weld seam is basically single-phase solid-solution organization, and the comprehensive mechanical performance of a connector is high.

Interlayer alloy of DD6 nickel-based single crystal high temperature alloy used for transient liquid phase (TLP) bonding and preparation method thereof

The invention discloses an interlayer alloy of a DD6 nickel-based single crystal high temperature alloy used for transient liquid phase (TLP) bonding. The interlayer alloy comprises the following components by atom percent: 3%-3.6% of B, 3%-4.5% of Co, 1%-2% of Cr, 2.5%-4% of W, 1.5%-3% of Al, 1.5%-3% of Mo and the balance of Ni, wherein the sum of the atom percents is 100%. The invention also discloses a preparation method of an interlayer alloy foil material. The preparation method comprises the following steps: performing step smelting and using a single-roller rapid solidification device to prepare the interlayer alloy foil material. The interlayer alloy disclosed by the invention has good flexibility and is convenient to process and assemble; when being welded, the interlayer alloy can be well matched with the DD6 nickel-based single crystal high temperature alloy and the brazed joint has a single crystal appearance and structure; and the preparation method of the interlayer alloy ...

Nickel-based interlayer material suitable for instantaneous liquid phase diffusion welding

The invention discloses a nickel-based interlayer material suitable for instantaneous liquid phase diffusion welding. The material is characterized by comprising the following chemical elements in percentage by weight: 4.3 to 7 percent of Si, 3 to 8 percent B and the balance of nickel. The melting point temperature of a quickly solidified Ni-B-Si alloy foil belt with thickness of 30 microns is 950 to 1,050 DEG C; the material is suitable for instantaneous liquid phase diffusion welding among low-alloy steel, stainless steel and low-alloy steel/ stainless steel composite materials, has high strength of seams and heat affected zones, good toughness and wide application, and is simple and convenient to manufacture; and the tensile strength Rm is 620MPa, the bent shaft diameter D is 6t, and no crack is produced when bending 180 degrees.

Ultrasonic composite electric resistance welding method for TC4 and 718 steel

The invention discloses an ultrasonic composite electric resistance welding method for TC4 and 718 steel. The ultrasonic composite electric resistance welding method for the TC4 and 718 steel particularly comprises the following steps of: 1) positioning the central part of a lap joint region of a TC4 titanium alloy plate, a metal intermediate transition layer and a 718 steel plate which are required to be welded on the axis of an upper electrode and a lower electrode of a three-phase direct current resistance welding machine; 2) intervening ultrasonic wave and pressurizing; and 3) performing welding operation, namely setting working parameters of an ultrasonic generator and the three-phase direct current resistance welding machine, applying welding pressure on the upper electrode, supplying power for the three-phase direct current resistance welding machine and the ultrasonic generator, switching on a circuit switch of the three-phase direct current resistance welding machine, starting ...

Phosphorus-free environmentally-friendly high-efficiency scale inhibitor

The invention discloses a phosphorus-free environmentally-friendly high-efficiency scale inhibitor. The phosphorus-free environmentally-friendly high-efficiency scale inhibitor comprises 16-18g of polyaspartic acid, 12-14g of polyepoxysuccinic acid, 6-8g of alkylepoxycarboxylate, 12-14g of sodium gluconate, 16-18g of sodium lignosulphonate and 32-34g of purified water. The above raw materials are orderly added into a stirring container and the materials are stirred at a stirring rate of 60r/min for 0.5-1h to form the uniform product. A test proves that the phosphorus-free environmentally-friendly high-efficiency scale inhibitor has a calcium carbonate scale inhibition rate of more than 98.5%.

Electric foot warmer

The utility model discloses an electric foot warmer, including heat preservation bag and the non -operculate box that is the trousers shape of handstand, cyclic annular cowhells has been made at the two trouser legs open -ended edge of heat preservation bag, and waist of trousers open -ended edge is connected with the upper limb of box mutually to it describes the cowhells to be provided with bars on the faying face of bag and box that keeps warm, the mid -mounting of box has the parallel baffle with cabinet bottom surface, installs the heating pipe between baffle and the cabinet bottom surface, and temperature regulation and alarm device are installed to the box lateral wall. The utility model discloses electric foot warmer to present improves, and the bag structure that keeps warm makes that the heat is unlikely to be wasted, has not only practiced thrift the energy but also saved the spending, designs into the trousers shape of handstand owing to keep warm the bag simultaneously, and ...

Method for synthesizing substituted amino carboxylic acid by ugi reaction

Deep tunnel active control support design method considering surrounding rock stress main shaft rotation

The invention relates to a deep tunnel active control support design method considering surrounding rock stress spindle rotation, which comprises the following steps: acquiring and dynamically updating tunnel excavation face rock mass in-situ mechanical parameters and engineering parameters, and determining rock mass strength parameters; a three-dimensional numerical model is established, excavation is simulated according to the actual excavation footage of on-site full-section or partial excavation, and tunnel surrounding rock monitoring section key position displacement, stress change conditions and elastic-plastic states are recorded; according to the three-dimensional numerical model, a curve of the principal stress state changing along with excavation steps is drawn, and the influence degree of rotation of a stress main shaft on rock mass strength, strength parameters and a failure mode is determined; two stress control methods are provided to improve the stress state of the rock mass ...

Cloth drying equipment

The utility model discloses a cloth drying equipment, including the box, the transfer roller of all having arranged from top to bottom in the box, box central authorities are equipped with the compression roller, are equipped with the heating wire in the compression roller, and the terminal top of box is equipped with the fan. The cloth is back the conveying of imperial formula in the box, when conveying to the compression roller, the compression roller heats the cloth and pressurize in the twinkling of an eye, and the wind speed was accelerated in the fan made the box, drove the water flashing on the cloth to the cloth is flattened in the compression roller pressurization, keeps leveling of cloth.

Portable karaoka system and method

The system utilizes portable electric device, providing the multiple modes for updating and down loading songs. Thus, the device in rich of songs can be carried with the users. The system includes the central operation message-monitoring module, the module for controlling the I/O devices, the updating and down loading selection module, the song catalog database and the songs playing back controlling module. The method includes following steps. The operation interface is for the user to start. The list of the songs is provided in order to build the listing of playing back songs. Based on the listing, whether the song is continuous to play is determined.

Buffer applying to driving circuit and driving method applying to load device

The invention relates to a buffer applying to a driving circuit and a driving method applying to a load device. The buffer applying to the driving circuit comprises a first transistor, a second transistor and a conversion rate control circuit, wherein the first transistor is used for supplying current to an output end, and the second transistor is used for drawing current from the output end; andthe conversion rate control circuit is used for controlling the conversion rate of at least one of the first transistor and the second transistor according to input signals, and a regulating and controlling circuit is used for preventing the first transistor and the second transistor from conducting simultaneously.

Method and device used for capturing and processing satellite data through GPU

The embodiment of the invention provides a method and device used for capturing and processing satellite data through a GPU. The method mainly includes the steps that a CPU and the GPU are arranged inside a software receiver of satellite signals, and the CPU inside the software receiver reads the satellite data and transmits the satellite data and capturing and processing instructions to the GPU; after the GPU receives the satellite data and the capturing and processing instructions, multiple channels inside the GPU capture and process the satellite data in parallel; the GPU accumulates capturing and processing results obtained through the channels, and an accumulating result is transmitted to the CPU. Due to the facts that the CPU and the GPU are arranged inside the software receiver of the satellite signals, the operation parts of capturing and processing the satellite data are performed on a GPU platform, the satellite capturing speed is greatly increased, the requirement for capturing ...

Paddle strain gauge arranging and decoupling method

The invention belongs to the technical field of a helicopter structure test and relates to a strain gauge arranging and decoupling method for asymmetrical structures of a helicopter rotor paddle (including a tail paddle) and the like, which is widely suitable for load test work for asymmetrical structures (for example an air blower blade, a turbine blade and the like) of other industries. The gauge arranging technology and the physical decoupling method disclosed by the invention overcome the defect that a common analyzing and decoupling method is insufficient in timeliness, can timely and accurately obtain swing and shimmy strains, the measured value is the true swing strain (or shimmy strain), so that great convenience is brought to a test flight or a measuring site as well as timely judgment. Moreover, in practical load measuring, compared with the technology in the invention and a conventional strain gauge arranging technology and analyzing and decoupling method, the processing workload ...

Phosphorus-free solid scale inhibitor and using method thereof

The invention belongs to the technical field of water treatment, and particularly relates to a phosphorus-free solid scale inhibitor and a using method thereof. The scale inhibitor comprises, in parts by weight, 15-25 parts of sodium humate, 20-25 parts of sodium lignin sulfonate, 20-25 parts of sodium gluconate and 25-35 parts of sodium carbonate; all the components are industrial goods available on the market. The using method comprises steps as follows: step 1, firstly, the scale inhibitor is placed into a container and dissolved in deionized water to form a homogeneous scale inhibitor solution, the solution is added to circulating water through a metering pump, and the dosage of the scale inhibitor is in a range of 10-30 mg/l; step 2, then 10-30 mg/l of poly aluminum chloride is added to the circulating water; step 3, finally, 1-2 mg/l of polyacrylamide is added to the circulating water. The scale inhibitor is mainly used for treating industrial circulating water.

Welding material for rapidly welding and repairing defects of large-scale ductile iron castings and repairing method

The invention discloses a welding material for rapidly welding and repairing defects of a large-scale ductile iron casting, comprising the following components by weight percent: 30%-35% of Fe2O3, 27%-32% of Al, 1.4%-1.6% of Na2CO3, 4%-6% of Na2B4O7, 4%-6% of CaF2 and 7%-10% of CaO, wherein when the material is used for welding large-scale ductile iron castings with different marks, the material further comprises a certain proportion of G, 75 Si-Fe, Ni, Bi, 60Si-Ca, RE-Mg, Q14 pig iron, Zr, BaCO3, Ce and the like, based on the total weight of 100%. The invention also discloses a method for rapidly repairing the defects of large-scale ductile iron castings, comprising the following steps: filling the welding material into a space formed by a groove and a dam, causing the welding material to carrying out an exothermal reaction, slowly cooling, removing the metal which is higher than the surface of the casting in a welding area. By using the material and the method of the invention, rapidly ...

Flux-cored alloyed ductile cast iron homogeneous gas-welding wire and electric welding rod

The invention discloses a flux-cored alloyed ductile cast iron homogeneous gas-welding wire which consists of H08A steel strip and alloyed flux-cored powder cladded in the H08A steel strip, and the flux-cored powder comprises the components based on the weight percentage: 10-20% of graphite, 50-60% of 75 Si-Fe, 5-8% of Ni, 2-5% of Ti, 3.8-6% of Mg, 0.8-2.5% of Bi, 1-2.5% of Zr, 2.0-4.5% of Ba, 1.5-2.8% of Ce and 4-6% of RE, and the total weight percentage is 100%. The invention also discloses an electric welding rod, a flux-cored welding core of which consists of the H08A steel strip and the alloyed flux-cored powder cladded in the H08A steel strip, and the coating applied on the welding rod comprises the components based on the weight percentage: 5-11% of marble, 10-20% of dolomite, 5-15%of potassium feldspar, 5-15% of fluorite, 8-16% of graphite, 15-25% of 75<#> silicoferrite, 6-10% of 30<#> calcium silicon alloy, 4-6% of aluminium powder, 3-7% of ferrous powder, 5-15% of white slime, ...

Low-phosphorus high-efficiency scale inhibition and dispersion agent

The invention relates to a water treatment agent and in particular relates to a low-phosphorus high-efficiency scale inhibition and dispersion agent. The scale inhibitor consists of the following components in percentage by weight: 10-15 percent of a carboxylate-sulfonate-N-tert-butyl acrylamide terpolymer, 8-10 percent of 2-phosphono butane-1,2,4-tricarboxylic acid PBTCA, 15-18 percent of an acrylic acid-2-acrylamide-2-methyl propane sulfonic acid copolymer, 7-10 percent of a phosphono carboxylic acid copolymer, 8-12 percent of sodium gluconate and the balance of water, wherein the raw materials of the components are commercially available industrial products. The low-phosphorus high-efficiency scale inhibition and dispersion agent disclosed by the invention is mainly used for treatment of industrial circulating water.

Novel circulating fluidized bed combined cycle

The invention discloses a novel circulating fluidized bed combined cycle comprising a gas turbine device, a circulating fluidized bed boiler, a steam turbine device, a piping system and a bypass chimney connected with gas turbine exhaust gas and boiler first and secondary wind systems, an air piping system connected with a gas compressor intermediate-grade gas suction port and a boiler high-pressure tuyere, and a flue gas waste heat recovery oxygen-removing heating system; a tail end smoke flue of the circulating fluidized bed boiler is communicated with atmospheric air through a dust collector and a chimney, a high-temperature superheater and a high-temperature reheater of the circulating fluidized bed are respectively communicated with a high-pressure steam turbine and an intermediate-pressure steam turbine, the intermediate-pressure steam turbine is communicated with a low-pressure steam turbine, and an exhaust gas condensate of the low-pressure steam turbine is communicated with a coal ...

Method for preparing metallic hollow microsphere powder

The invention discloses a method for preparing metallic hollow microsphere powder. In the method, a molding device is used for implementing according to the steps of vacuum-pumping, heating and smelting, active aerification, hollow spheroidization and the like. The molding device comprises a large vacuum chamber communicated with a deflation valve and a vacuum pump, the large vacuum chamber is internally provided with a copper roller and a high frequency induction coil, the high frequency induction coil is internally provided with a crucible, a lower end nozzle is aligned with the face of thecopper roller, the large vacuum chamber is connected with a small vacuum chamber, the opening of the crucible is communicated with the small vacuum chamber, and an additional passage is arranged between the large vacuum chamber and the small vacuum chamber; the small vacuum chamber is communicated with a mixing chamber, and the mixing chamber is respectively communicated with a hydrogen tank and an ...

Bacterium culture dish strutting arrangement

The utility model discloses a bacterium culture dish strutting arrangement, including culture dish board (1) and support, be equipped with a plurality of culture dish standing groove (7) on culture dish board (1), the support includes first branch (3) and second branch (4) just first branch (3) and second branch (4) are rotated and are set up on pivot (5), culture dish board (1) is fixed through universal roller bearing (2) first branch (3) top, second branch (4) level arranges in subaerially and it is kept away from the one end of first branch (3) is equipped with sucking disc (6). The utility model provides a bacterium culture dish strutting arrangement, simple structure conveniently is used for the dynamic bacterium clean degree in order to master the operating room of cultivateing, improves work efficiency.

High-entropy alloy solder used for welding hard alloy and steel and preparation method thereof

The invention discloses a high-entropy alloy solder used for welding hard alloy and steel, which comprises the components according to atomic percent with the total percentage being 100%: 10-15% of Ti, 18-25% of Cu, 12-18% of Ni, 10-15% of Zr, 15-20% of Fe, 10-15% of Cr, 0.5-2.5% of Sn and 0.01-2% of trace element, wherein, the trace element is one selected from Bi, Ga or In. The invention also discloses a preparation method of the high-entropy alloy solder foil, which adopts ultrahigh vacuum electric arc furnace stepwise smelting technique and a single-roller rapid solidification device to prepare the high-entropy alloy solder foil. The high-entropy alloy solder has good flexibility and is convenient for processing and assembly; when in welding, the high-entropy alloy solder has good matching property with the welded metal and alloy; the soldering seam is good in corrosion-resistant performance, the welding seam is single-phase fcc solid solution tissue, and the comprehensive mechanical ...

Metastable state Cu-base and Ni-base alloy composite foil and preparation method thereof

Preparation technology of cefotaxime

The invention relates to a preparation technology of cefotaxime, belonging to the preparation technology of medical compounds. The technology comprises the following steps: adding 7-ACA and AE-active resin reagents in solvent, and then adding an organic base and an alcohol catalyst to carry out a synthesis reaction. The preparation technology is characterized in that an acidifier is directly added for acidification after the reaction is finished so as to devitrified. The invention has simple and convenient operation, short production period, high product yield and low solvent consumption and can obtain products with uniform crystallized grains, good colors, high purity, low cost and stable quality.

Flexible granite

The invention discloses flexible granite. The flexible granite has the obvious advantages that the flexible granite can replace natural granite materials, accordingly, huge wastage of non-renewable natural resources can be reduced, a building can be lightened, dry-hang members and construction procedures can be omitted, the labor intensity can be lowered, the safety performance and the seismic performance of the building can be improved, the modeling flexibility can be facilitated, the construction period can be shorted, the comprehensive engineering cost can be reduced, the flexible granite is good in heat-insulation performance, the temperature amplitude can be reduced, the environmental comfort level can be improved, standard requirements of energy-saving buildings in hot-summer and cold-winter regions and hot-summer and warm-winter regions can be met by a heat transfer coefficient of a system of the flexible graphite, and the flexible granite is obvious in the aspects such as promoting ...

Cadmium-free low-silver medium-temperature solder for welding hard alloy and steel and preparation method

The invention discloses a cadmium-free low-silver medium-temperature solder for welding hard alloy and steel. The cadmium-free low-silver medium-temperature solder consists of the following components by atomic percent: 40 to 45 percent of Ag, 7 to 10 percent of Sn, 5 to 9 percent of Zn, 0.2 to 0.5 percent of Ni, 0.02 to 0.04 percent of Ce, 0.01 to 0.03 percent of Ga, 0.01 to 0.03 percent of Bi and 42 to 48 percent of Cu. The invention also discloses a preparation method of cadmium-free low-silver medium-temperature solder. The cadmium-free low-silver medium-temperature solder is good in flexibility and convenient to process and assemble; and the cadmium-free low-silver medium-temperature solder is well matched with the hard alloy and alloy steel when in welding, the comprehensive performance of a connector is high, the preparation method is simple, the production cost is low, and convenience in popularization can be realized.

在携带式电子通讯装置实行伴唱的方法

The invention provides a method for realizing singing accompanying in a portable electronic communication device e.g. a personal digital assistant, enabling the central processing unit (CPU) of the electronic communication device to access the accompanying songs stored in a memory through internet download, a playback software can play the accompanying music of the song and display the lyric of the song simultaneously, through which the singer can sing, then the voice of the singer can be recorded and stored in the memory, thus realizing the singing accompanying, recording and transmission.

Novel synthetic method of hemiasterlin

The invention relates to a novel synthetic method of hemiasterlin. According to the novel synthetic method, an intermediate compound represented by formula IX is synthesized, and is subjected to acylation, methylation and N protection; and then hemiasterlin is prepared by coupled reaction of the intermediate compound with a compound represented by formula XIII. The novel synthetic method is characterized in that: synthetic route is short, reaction is simple, post treatment is convenient, yield is high, and purity of the finished product is high.

Metastable state Cu-base and Ni-base alloy composite foil and preparation method thereof

The invention provides an alloy composite insulating foil of a metastable Cu base and a Ni base, being composed of a double-layer structure of a Cu base alloy layer and a Ni base alloy layer. According to percentage by weight, the components of the Cu base alloy layer include 7-20% Sn, 0.5-1.0% B and Cu which occupies the rest percentage. According to percentage by weight, the components of the Ni base alloy layer include 5-9% Si, 0.5-1.0% B and Ni which occupies the rest percentage. The thickness of the Cu base alloy layer is 15-25 mum and the thickness of the Ni base alloy layer is 15-25 mum. The invention resolves the problem of the relatively worse welding property of copper and TLP non-corrodible steel existed in the existing technology. The composite insulating foil of the inventionutilizes single-roller rapid condensing device to prepare. The method is easy and convenient in operation. The composite insulating foil of the invention not only combines the advantages of a buffer layer ...

Whirl fluidized bed pelletization capsule device

The utility model discloses a whirl fluidized bed pelletization capsule device, including barrel (1), the bottom of barrel (1) is equipped with fluidized bed (2), is equipped with the mechanism of admitting air below fluidized bed (2), fluidized bed (2) are the vane type structure, and the slope of blade wherein, form the clearance between the two adjacent blades, and the air current of the mechanism of admitting air passes through from the clearance of blade, form circulation inflating stream and get into in barrel (1). The utility model discloses can guarantee that the material moves in order, the phenomenon at channel and dead angle has been overcome to the whirl fluidization, and the granule that makes is porous, the proper sphere degree high, surface gloss is good, compactness is robbed, and difficult broken, and the qualification rate is higher.

Vehicle self-adaption windscreen wiper control system

The invention relates to a vehicle self-adaption windscreen wiper control system. The vehicle self-adaption windscreen wiper control system comprises a windscreen wiper controller, a windscreen wiper motor and a rainfall and sunshine sensor. An existing handle switch is connected with an existing vehicle body controller. The output end of the existing vehicle body controller is connected with the windscreen wiper controller. The output end of the windscreen wiper controller is connected with the windscreen wiper motor and a vehicle headlamp. Connection between the existing vehicle body controller and the windscreen wiper motor and connection between the existing vehicle body controller and the vehicle headlamp are cut off. The rainfall and sunshine sensor is connected to the windscreen wiper controller. The control system has the manual mode and the automatic mode. The vehicle self-adaption windscreen wiper control system is adopted, the system is used in cooperation with the rainfall and ...

Heat-insulating decorative fireproof partition board for exterior wall of building and construction method thereof

The invention discloses a heat-insulating decorative fireproof partition board for an exterior wall of a building and a construction method thereof. The heat-insulating fireproof decorative board adopts a heat-insulating foaming ceramic board made of fireproof materials as a fireproof partition and heat-insulating material; the heat-insulating foaming ceramic board, an enhanced panel and veneer materials form an integrated board with the functions of fire prevention, heat insulation and decoration; integrated boards are arranged along the horizontal direction of the building at intervals of certain height in a heat-insulating system for the exterior wall of the building or arranged on upper edges of window and door openings of the building to form a fire barrier, so that the flame propagation can be effectively prevented and the fire damage can be reduced; the heat-insulating fireproof decorative board is bonded with a base course wall of the building through cement mortar at first and ...

Light control circuit and self-learning method thereof

The invention provides a self-learning method based on a light-operated circuit. The self-learning method comprises the following steps: identifying a self-learning demand of a user on the light-operated circuit; wherein the self-learning requirements comprise a first self-learning requirement, a second self-learning requirement, a third self-learning requirement and a fourth self-learning requirement; and controlling the light control circuit according to the self-learning requirement. The invention also provides a light-operated circuit. The light-operated circuit comprises a processing unit. And the processing unit is used for identifying a self-learning demand of a user for the light-operated circuit after acquiring the self-learning demand of the user for the light-operated circuit, and controlling the light-operated circuit according to the self-learning demand. According to the scheme, the light-operated circuit can be flexibly arranged according to user requirements, and the use ...

Butterfly cavity type microwave plasma chemical vapor deposition device

The invention belongs to the technical field of microwave plasma chemical vapor deposition, and particularly relates to a butterfly cavity type microwave plasma chemical vapor deposition device. The device comprises a main body, a vacuum cavity is arranged in the main body, and the device is characterized in that a sliding upper cover capable of moving up and down in the vacuum cavity in the vertical direction is arranged in the vacuum cavity, the sliding upper cover is connected with a guide rail sliding table through a sliding structure, and the sliding structure comprises a water inlet and outlet assembly for cooling the sliding upper cover; one end of the water inlet-outlet assembly penetrates through the main body, is arranged in the main body and is connected with the sliding upper cover; the other end of the water inlet-outlet assembly extends out of the main body and is connected with the guide rail sliding table; the peripheral side of the sliding upper cover is attached to the ...

Welding material for quickly welding and repairing defects of large-scale steel-casting and repairing method

Amorphous alloy brazing filler metal for welding TA series titanium and stainless steel and preparation method of amorphous alloy brazing filler metal

The invention discloses an amorphous alloy brazing filler metal for welding TA series Ti and stainless steel. The amorphous alloy brazing filler metal comprises, by atomic percent, 20%-25% of Ti, 25%-30% of Cu, 20%-25% of Ni, 15%-20% of Fe, 10%-13% of Cr, 0.5%-5% of Sn, 0.01%-2% of In and 0.01%-2% of Ga, wherein the total percentage is 100%,. The invention further discloses a preparation method of the amorphous alloy brazing filler metal. The melting point of the amorphous alloy brazing filler metal ranges from 762 DEG C to 842 DEG C, the brazing temperature is lower than the phase transformation point of Ti, the flexibility of the brazing filler metal is good, and convenience is brought to machining and assembling; when welding is carried out, the matching performance among the amorphous alloy brazing filler metal, welded metal and alloy are good, the brazing seam decay resistance is good, welding lines are one-phase fcc solid solution structures, and the general mechanical performance ...

Special-shaped GRG block partition limiting installation structure and splicing method thereof

The invention discloses a special-shaped GRG block partition limiting installation structure. The special-shaped GRG block partition limiting installation structure comprises a fixing steel frame (1), upper GRG plates (2) and lower GRG plates (3). The upper GRG plates (2) and the lower GRG plates (3) are mutually and correspondingly spliced to form structural units; the structural units are installed side by side, the back face of each structural unit is fixed to the fixing steel frame (1), and the fixing steel frame (1) is installed on an inner steel frame structure. The invention further discloses a splicing method of the special-shaped GRG block partition limiting installation structure. According to the special-shaped GRG block partition limiting installation structure and the splicing method of the special-shaped GRG block partition limiting installation structure, the problem that installation quality of large-area special-shaped GRG is difficult to control is solved, the quality ...

Insulation construction method of external wall with external decoration plate

The invention provides an insulation construction method of an external wall with an external decoration plate, which relates to a decoration method of a wall body, in particular to a construction method of an external insulation layer of the external wall. The construction method comprises the following steps: manufacturing an insulating layer on the back surface of the external decoration plate; cleaning dust of an external wall surface; spraying hard urethane foam foaming in a delay mode on the external wall surface; spraying the same hard urethane foam on the surface of the insulating layer of the external decoration plate to be bonded; sequentially bonding the back surface of the external decoration plate with the outer wall body in a facing way; and filling a gap between an external decoration layer and the wall body by the hard urethane foam foaming in the delay mode. The external wall insulation construction method has high bonding strength of the external decoration plate, tension ...

Panax ginseng condensed milk and preparation method thereof

The invention belongs to the technical field of dairy products and health care food, and relates to ginseng condensed milk and a preparation method thereof. The ginseng condensed milk comprises raw materials in the following proportion: 2550kg to 2700kg of milk, 15kg to 18kg of ginseng extract, 440kg to 470kg of sugar, 0.05kg to 0.08kg of sucrose ester, 0.02kg to 0.03kg of lactose, 1kg to 1.1kg of cream and 200kg of water; 1000kg to 1050kg of finish product can be prepared with the raw materials. The product is prepared by following steps: ginseng extract preparation, milk disinfection, cream emulsification, homogenatioon, sugar melting, disinfection, cooling, vacuum concentration, re-homogenatioon, lactose cooling and crystallization, degassing, filling, etc. The preparation process of the invention is simple and feasible and applicable in mass production; and the obtained ginseng condensed milk products are the scientific combination of the effective components of condensed milk and ginseng ...

Impeller

The utility model discloses an impeller, a serial communication port, including half impeller (1), blade dish (2), nut (3), attachment bolt (5), impeller seat (6), stabilize bolt (7) and nut two (8), half impeller (1) sets up on blade dish (2), blade dish (2) are fixed on impeller seat (6) through nut (3), spring washer (4), attachment bolt (5), still be equipped with on impeller seat (6) and stabilize bolt (7) and nut two (8). The utility model discloses an it is less that impeller makes the degree of difficulty, and the cost is lower, and strong adaptability.

Welding material for quickly welding and repairing defects of large-scale steel-casting and repairing method

The invention discloses a welding material for quickly welding and repairing defects of a large-scale steel-casting. When being applied to large-scale ZG35CrMo steel-castings, the welding material comprises the following components in percentage by weight: 33%-38% of ferric oxide, 24%-28% of aluminum, 1.4%-1.6% of soda, 4%-7% of borax, 8%-12% of fluorite, 6%-8% of calcium oxide, 4%-5% of mid-carbon ferromanganese, 6%-8% of silica, 3%-5% of chromic oxide and 1%-2% of ferromolybdenum; and the total weight is 100%. When being applied to large-scale ZG20 steel-castings, the welding material comprises the following components in percentage by weight: 35%-38% of ferric oxide, 20%-25% of aluminum, 1.4%-1.6% of soda, 5%-7% of borax, 8%-10% of fluorite, 10%-12% of calcium oxide, 6.5%-7.5% of silica and 3.5%-5% of manganese oxide; and the total weight is 100%. The invention also discloses a method for quickly welding and repairing the defects of the large-scale steel-casting, comprising the following ...

High chromium cast iron core wear resisting surfacing deposited electrode

The invention discloses a high chromium cast iron core wear resisting surfacing deposited electrode which comprises an external applying coating and a core-welding wire, wherein the coating comprises 3-5% of Al, 4-8% of mud graphite, and 3-7% by weight, and total percentage is 100%; the core-welding wire comprises according to weight percentage: a first solution as follows: 2.0-2.8% of C, 22-30% of Cr, 1.5-2.5% of Mn, 0.8-1.6% of Si, 1.8-3.0% of Mo, and the balance Fe, and total percentage is 100%; a second solution as follows: 2.2-3.0% of C, 22-30%of Cr,1.5-2.5% of Mn, 0.8-1.6% of Si,1.8-3.0% of Mo,1.0-2.0% of B, less than 0.05% of S, less than 0.1% of P, the balance Fe, and total percentage is 100%; a third solution as follows: 2.0-2.8% of C, 20-28% of Cr, 1.5-2.5% of Mn, 0.8-1.6% of Si, 1.8-3.0% of Mo, 1.0-2.0% of B, less than 0.05% of S, less than 0.1% of P, and the balance Fe, and total percentage is 100%; a fourth solution is as follows: 1.6-2.6% of C, 18-28% of Cr, 1.5-2.5% of Mn ...

Key value storage system and method based on cache gradient cold and hot data layering mechanism

The invention discloses a key value storage system and method based on a cache gradient cold and hot data layering mechanism, the system comprises a memory component, an equipment component and a disk component, and the method comprises the following steps: a filter screens Key shunt cold and hot data; hot data enter a hot cache module, and cold data enter a cold cache module; when the hot cache module eliminates outdated data, the outdated data enter the cold cache module, after the cold data reaches the number, the cold data enter the GPUport assembly to be sorted and backed up to the GPU cache region assembly at the same time, the cold data are sorted through the GPUport assembly and stored to the disk assembly, meanwhile, files with the sum of heat values of disk files smaller than a preset value are migrated to the lower layer of the system, and files with the sum of heat values larger than the preset value are migrated to the upper layer of the system. According to the method, a memory ...

Ultrasonically-assisted metastable alloy rapidly-solidifying welding device and method

The invention relates to an ultrasonically-assisted metastable alloy rapidly-solidifying welding device which is characterized by comprising a mechanical part and a circuit part, wherein an ultrasonic generator of the mechanical part is connected with a transmitting rod through an electroacoustic transducer, the transmitting rod is connected with a vibrating head, and the lower end of the vibrating end is connected with an upper electrode; an alternating current power supply of the circuit part is connected with an adjustable transformer, and a branch formed by serially connecting a main power switch and a resistor is also connected to the input end of the adjustable transistor; and the output end of the adjustable transformer is connected with two input ends of a bridge rectifier, a switch, a three-way switch, a capacitor and a resistor which are sequentially connected in series between two output ends of the bridge rectifier, the position III of the three-way switch is connected with ...

Drinking water purifying agent and preparation method thereof

The invention provides a drinking water purifying agent and a preparation method thereof, and the drinking water purifying agent is mainly prepared from the following raw materials by weight: 12-20 parts of polyaluminum chloride, 2-6 parts of diatomite, 7-12 parts of sodium carboxymethyl cellulose, 15-23 parts of poly dimethyl diallyl ammonium chloride, 10-18 parts of polyferric sulfate, 10-16 parts of potassium permanganate, and 20-28 parts of deionized water. By adopting a formula of a plurality of water purification components, an organic flocculant and an inorganic flocculant are combined, and dual effects of water purification and flocculation are achieved, so that an excellent water purification effect is achieved.

Heat-insulating decorative fireproof partition board for exterior wall of building and construction method thereof

The invention discloses a heat-insulating decorative fireproof partition board for an exterior wall of a building and a construction method thereof. The heat-insulating fireproof decorative board adopts a heat-insulating foaming ceramic board made of fireproof materials as a fireproof partition and heat-insulating material; the heat-insulating foaming ceramic board, an enhanced panel and veneer materials form an integrated board with the functions of fire prevention, heat insulation and decoration; integrated boards are arranged along the horizontal direction of the building at intervals of certain height in a heat-insulating system for the exterior wall of the building or arranged on upper edges of window and door openings of the building to form a fire barrier, so that the flame propagation can be effectively prevented and the fire damage can be reduced; the heat-insulating fireproof decorative board is bonded with a base course wall of the building through cement mortar at first and ...

9-(2-phosphatidyl methoxy ethyl)-adenine crystal and preparation method thereof

The invention relates to a 9-(2-phosphatidyl methoxy ethyl)-adenine (PMEA) crystal and a preparation method thereof. The X-ray diffraction spectra data of the PMEA crystal are respectively 14.740, 18.640, 20.720, 23.420, 24.420, 25.560, 26.880 and 29.880, wherein Cu-Ka radiation is used and the diffraction angle is shown as 2Theta. The PMEA crystal is beneficial to preparing an antiviral drug, i.e. 9-[2-[di (pivoxil) phosphatidyl methoxy] ethyl]-adenine (adefovir dipivoxil).

Method of de-alkyl amine

The invention relates to a method of de-tert-alkyl amine, which mainly solves the technical problems of over strong reacting conditions and low yield of the prior method. The method of de-tert-alkyl amine is characterized in that tertiary tert-alkyl acid amide is reacted in the mixed solution of trifluoroacetic acid and water and is hydrolyzed into corresponding carboxylic acids, the volume ratio of the trifluoroacetic acid and water is 1-100: 0-5, and the reacting formula is as above. In the formula, R and R' are the alkyl group or the aromatic group of C1 to C20, and the reaction temperature is from the room temperature to the solvent reflux temperature. The invention hydrolyzes the tertiary tert-alkyl amine into corresponding carboxylic acids under a mild condition.

Preparation of high-purity 1, 4-diacetylene benzene

Production of high-purity 1,4-diacetylene benzene is carried out by using industrial stage mixed divinylbenzene as raw material, liquid brominating, liquid-solid separating to obtain 1,4-bis-styrene dibromide, removing hydrogen bromide from 1,4-bis-styrene dibromide, and obtaining object. It achieves low cost, simple operation and high purity.

Dongfeng snail powder compound feed

The invention relates to Dongfeng snail powder compound feed comprising basal feed which comprises the components in percentage by weight: 5 percent of kelp powder and 0.1-0.15 percent of nanometer trace mineral element and also comprises Vc condensed phosphate, beta-hyskon, phytase and xylo-oligosaccharide. The production method comprises the following steps of: preparing the basal feed materials in proportion after the basal feed materials are initially cleaned and magnetically selected, micronizing after the materials are evenly mixed, adding trace mineral elements, Vc condensed phosphate, beta-hyskon, phytase and xylo-oligosaccharide which are diluted and evenly mixed in multiple levels in advance into the crashed basal feed to mix secondly and weighing and packing to obtain the Dongfeng snail powder compound feed. The Dongfeng snail powder compound feed can supply complete nutritional requirements for Dongfeng snails, promote growth, obviously reduce feed coefficients, increase the ...

Device for detecting radial internal clearance of radial spherical pain bearing

The invention discloses a device for detecting the radial internal clearance of a radial spherical pain bearing. The device comprises a box body, an output cylinder body, a transmission device, a fixing device and a detecting device, wherein the output cylinder body is fixedly arranged on the side surface of the box body; the detecting device, the fixing device and the transmission device are respectively and fixedly arranged at upper part, middle and lower part of the side surface of the box body; the transmission device is connected with the output cylinder body; the transmission device comprises a conversion device and a pushing device; the conversion device comprises a conversion rod and a conversion base; the pushing device comprises a pushing fixed block, a linear bearing, a pushing rod and a pushing block; the fixing device comprises a core shaft, a Harvard device, a fixed end cover, a pressing plate and a locking nut; the detecting device comprises a detecting fixed block and a ...

High-entropy alloy brazing filler metal for welding TA2 and 0Cr18Ni9Ti and preparation method thereof

The invention discloses a high-entropy alloy brazing filler metal for welding TA2 and 0Cr18Ni9Ti. The brazing filler metal comprises the following compositions according to atomic percentage: 20 to 25 percent of Ti, 25 to 30 percent of Cu, 20 to 25 percent of Ni, 15 to 20 percent of Fe, 10 to 13 percent of Cr, 0.5 to 5 percent of Sn, 0.01 to 2 percent of In, and 0.01 to 2 percent of Ga. The invention also discloses a method for preparing a high-entropy alloy brazing filler metal foil, which comprises the following steps: smelting the compositions to obtain high-entropy master alloy in steps by a super-high vacuum arc furnace; and controlling the linear speed of a roller at 5 to 40m/s by a single roller rapid setting device to obtain the high-entropy alloy brazing filler metal foil. The high-entropy alloy brazing filler metal has good flexibility, and is convenient for processing and assembling; and in welding, the high-entropy alloy brazing filler metal has good matching property with welded ...

Preparation method of bazedoxifene acetate

The invention discloses a preparation method of bazedoxifene acetate. The method comprises the following steps: carrying out a condensation cyclization reaction on 1-(4-Pg1 oxygroup phenyl) propyl alcohol (II) and N-{4-(2-azacycloheptane-1-yl-ethyoxyl-benzyl)}N-{4-(Pg2 oxygroup phenyl)} hydrazine (III) so as to obtain 1-{4-(2-azacycloheptane-1-yl-ethyoxyl-benzyl)}-2-(4-Pg1 oxygroup-phenyl)-3-methyl-5-(Pg2 oxygroup)-1H-benzpyrole (IV); and carrying out deprotection on the intermediate (IV) and salifying the intermediate (IV) with acetic acid so as to obtain the bazedoxifene acetate (I). The preparation method is concise in process, high in yield, economical and environment-friendly, thereby providing a novel preparation way for the industrial production of the bazedoxifene acetate.

Method and device for adjusting optical axis parallelism of transmitting and a receiving optical system of dual-axis laser ceilometer

The invention discloses a method and a device for adjusting the optical axis parallelism of a transmitting and receiving optical system of a dual-axis laser ceilometer. The method is characterized in that a transmitting telescope and a receiving telescope are fixed on the same plate, the transmitting telescope can be adjusted in the horizontal direction, the receiving telescope can be adjusted in the pitching direction, a CCD detection module is installed at the position of the transmitting telescope, another CCD detection module is installed at the position of the receiving telescope, a visible light source target is placed in an area where an overlap factor is 1 in front of a transmitting and receiving optical path, view field images detected by the two CCD detection modules are inputted to a computer, the position of the target in the view field image is determined, a view field image of the transmitting and receiving optical path is observed on the computer, and the target is enabled ...

Preparation of 1, 3-diacetylene benzene

Production of 1,3-diacetylene benzene is carried out by using 1, 3-dihalogenated benzene as raw material, Hack reacting with 2-methyl-2-hydroxy-butine-2, obtaining intermediate 1,3-bis-2,-methyl-2,-hydroxy-butine-2dibasic benzene, and deacetonizing to obtain 1,3-diacetylene benzene. It achieves low cost, simple operation and high purity.

High-efficiency flocculating agent with low scum amount and preparation method thereof

The invention provides an efficient flocculating agent with low scum amount and a preparation method thereof, and the flocculating agent comprises the following components in parts by mass: 20-25 parts of an inorganic compound, 10-18 parts of an organic compound and 10-16 parts of a foaming component, the organic compound is formed by mixing nonionic polyacrylamide, anionic polyacrylamide and amphoteric polyacrylamide according to a certain proportion. The inorganic compound is combined with suspended solids and oil in water, then the organic compound is used for generating large flocs, the flocs are combined with bubbles generated by the foaming component, the flocs are brought to the water surface through the bubbles to be removed, the method is convenient and rapid, the dosage is low, and the production cost is reduced.

Input type ultrasonic flow monitor for municipal pipe network

The invention relates to the technical field of hydrological monitoring, and discloses a throw-in type ultrasonic flow monitor for a municipal pipe network, the throw-in type ultrasonic flow monitor comprises a mounting plate, the right side of the mounting plate is fixedly connected with a mounting bracket, the right side of the mounting bracket is fixedly connected with a bearing plate, and the bottom of the bearing plate is fixedly connected with a limiting strip plate; a fixing part is fixedly connected to the bottom of the mounting bracket, a laser radar water level gauge is fixedly connected to the bottom of the fixing part, a reinforcing part is fixedly connected to the right side of the mounting plate, a multi-parameter water quality hydrological monitor is fixedly connected to the bottom of the reinforcing part, and a fixing ring is fixedly connected to the outer side of the multi-parameter water quality hydrological monitor. The right side of the fixing ring is fixedly connected ...

Horseshoe-shaped mountain tunnel deformation detection method and system based on laser point cloud segmentation

The invention discloses a horseshoe-shaped mountain tunnel deformation detection method and system based on laser point cloud segmentation, and relates to the field of mountain tunnel scanning, and the method comprises the steps: obtaining a three-dimensional laser point cloud of a to-be-detected horseshoe-shaped mountain tunnel, and obtaining laser point cloud data; de-noising the laser point cloud data by using a random sampling consistency algorithm to obtain de-noised laser point cloud data; segmenting the denoised laser point cloud data by using a superbody clustering algorithm to obtain segmented point cloud data; performing ellipse fitting on the coordinate data of the segmented point cloud data, and determining the maximum convergence deformation and ellipticity of an elliptical circular ring; when the maximum convergence deformation exceeds a first set threshold value and the ovality is smaller than five thousandths of the tunnel diameter, it is determined that the to-be-detected ...

Electronic component design, selection, verification and evaluation system and method based on data analysis

The embodiment of the invention provides an electronic component design, selection, verification and evaluation system based on data analysis, and the system is characterized in that the system comprises a data collection module, a data preprocessing module, a verification and evaluation model building module, a storage module, and a visual display module; wherein the data acquisition module is used for acquiring an input electronic component design selection list data file and analyzing the data file; the data preprocessing module is used for preprocessing an input component design selection list file; the verification and evaluation model building module is used for building a verification and evaluation model; the storage module is used for storing structured selection list data and verification and evaluation results, and providing a component basic attribute dictionary and a different-dimension quality information base required by the data preprocessing module and the verification ...

Orthopedic traction bed

The invention relates to an orthopedic traction bed and belongs to the technical field of medical instruments. The orthopedic traction bed comprises a bed body, a power line penetrating hole is formed in the front side of the bed body and internally provided with a power line, the power line is connected with a power source socket, a power source knife switch installation groove is formed in the right side of the power line penetrating hole, a power source knife switch is arranged inside the power source knife switch installation groove and provided with a knife switch push rod movable hole, the knife switch push rod movable hole is internally provided with a knife switch push rod; the knife switch push rod is provided with an insulation handle; the power source knife switch installation groove is connected with a knife switch protective cover through a hinge. The orthopedic traction bed is complete in function and convenient to use. When medical workers carry out traction on orthopedic ...

Trionyx-sinensis-like brick

A disclosed trionyx-sinensis-like brick compriess a rectangular brick body, the central part of the rectangular brick body is provided with a hand-holding hole, a plurality of blocking grooves are uniformly arranged surround the hand-holding hole on the rectangular brick body in a stagger manner, the hand-holding hole and the blocking grooves penetrate the top face and the bottom face of the rectangular brick body in the vertical direction, and the other four lateral sides of the rectangular brick body are provided with a plurality of guide grooves in paired symmetry in the vertical direction. The advantages comprise that the hot-fluid dispersing design is unique, the trionyx-sinensis-like brick has bidirectional heat insulation performance and high thermal resistance value, is capable of realizing bidirectional application, is suitable for two kinds of modulus standard wall thickness, can be produced from common concrete and also can be produced from lightweight aggregate concrete, and ...

Orthopedic surgical assist rack

The invention belongs to the technical field of medical instruments and relates to an orthopedic surgical assist rack. According to the technical scheme, the orthopedic surgical assist rack comprises a fixed base and an operating support; the orthopedic surgical assist rack is characterized in that folding connecting spindles are arranged on two sides of the fixed base, a fixed connecting support is arranged on one side of each folding connecting spindle, one side of each fixed connecting support is provided with a fastener connector, one side of each fastener connector is provided with a folding fixing fastener, a fastener fixing lever is arranged on the top of each folding fixing fastener, one side of each folding fixing fastener is provided with a fastener assist connector, one side of each fastener assist connector is provided with a fixed support connector. The orthopedic surgical assist rack is simple in structure and convenient to use, is simple to operate to perform bone sawing ...

Mixer

The utility model discloses a mixer, frame (1) including the U -shaped, the one end at frame (1) top even has driving shaft (3), and the other end even has driven shaft (4), even has one V -arrangement mixed material barrel (2) between driven shaft (4) and driving shaft (3), the inner wall of V -arrangement mixed material barrel (2) still is equipped with a plurality of vertical retorts (5). The utility model discloses can effectually breaing up the material, making the material can not stick together, the compounding is more even.

Ceiling antenna of broadband qxcomm technology

The utility model discloses a ceiling antenna of broadband qxcomm technology, ceiling antenna of broadband qxcomm technology includes: the chassis is equipped with multiunit baffle subassembly on the upper surface on chassis, monopole, monopole include first central part and a plurality of first radiation portion, and the top on the chassis is established to the monopole, the coaxial cable, loading paster, loading paster include second central part, a plurality of second radiation portion and a plurality of connecting portion, and the loading paster is established in the top of monopole and spaced apart with the monopole, a plurality of baffle subassemblies and connecting portion one -to -one. According to the utility model discloses a ceiling antenna of broadband qxcomm technology sets up the baffle subassembly that extends along the circumference direction on chassis through the upper surface on the chassis, and makes the one end with the chassis is connected of connecting portion establish ...

Amorphous molybdenum-doped tungsten oxide electrochromic material and preparation method thereof

The invention discloses an amorphous molybdenum-doped tungsten oxide electrochromic material and a preparation method thereof.The method comprises the following steps that the forevacuum degree of a magnetron sputtering coating instrument reaches 2 * 10 <-4 > Pa or below, and in the argon-oxygen mixed atmosphere, an amorphous molybdenum-doped WO3 target material is subjected to radio frequency reaction deposition sputtering on the surface of a conductive glass substrate, and the Mo-doped WO3 thin film is subjected to annealing treatment, and the amorphous molybdenum-doped tungsten oxide electrochromic material is obtained. The color fading state transmittance is high, the coloring state transmittance is low, the contrast ratio can reach 56.6%-72.8%, reversible conversion between transparency and gray black can be achieved under different voltages, and chromaticity change in the tungsten oxide film color changing process is achieved. The material can be applied to various occasions such ...

Drying apparatus

The utility model discloses a drying apparatus, including cylinder drier (1), the bottom opening of cylinder drier (1) to be equipped with protection network (2) at the opening part, be equipped with a fan (3) in the below of protection network (2), the both sides of cylinder drier (1) link respectively has a gas blow pipe (4), and the gas blow pipe of both sides (4) are not on same straight line. The utility model discloses reached the effect of dual drying, can be thoroughly dry.

Production method and production device of dimethyl sulfoxide

The invention provides a production method and a production device of dimethyl sulfoxide. The production method comprises the following steps: mixing dimethyl sulfide and hydrogen peroxide according to a molar ratio of 1: (0.7-1.0) at 30-40 DEG C, and carrying out pre-reaction; and reacting the obtained mixed solution in a tubular reactor at 20-28 DEG C to control the selectivity of the product, thereby obtaining the dimethyl sulfoxide. According to the production method provided by the invention, a solvent and a catalyst are not needed, serial operation of a plurality of reactors is not needed, the steps are simpler and more convenient, the equipment investment cost of a production device is lower, and research shows that by adopting the production method provided by the invention, the conversion rate of hydrogen peroxide can reach 99% or above, and the selectivity of dimethyl sulfoxide can reach 99% or above.

Dredger fill consolidation drainage system

The utility model relates to the field of drainage structures, in particular to a dredger fill consolidation drainage system which comprises a foundation pit, a water pump and a water pumping pipe, the water pump is horizontally placed on the peripheral ground of the foundation pit, one end of the water pumping pipe is communicated with a water inlet pipe of the water pump, and the other end of the water pumping pipe is inserted into dredger fill in the foundation pit. The outer wall of the water pumping pipe is wrapped with a filter belt, and the filter belt comprises a gauze bag and filter mud filler. The outer wall and the lower end opening of the branch pipe are wrapped with the filter belt, the filter belt can prevent a large amount of silt carried in water from entering the water suction opening, the silt can be prevented from blocking the branch pipe, and the purpose of purifying water can be achieved.

Chemical oxygen demand (COD) device with automatically adjustable measuring range

The invention provides a chemical oxygen demand (COD) device with an automatically adjustable range, which comprises an upper layer shell, a lower layer shell is arranged at the bottom of the upper layer shell, a sampling port is formed in one side of the joint of the upper layer shell and the lower layer shell, a first connecting layer is arranged on one side of the sampling port, and a second connecting layer is arranged on the other side of the sampling port. Compared with the prior art, an optical path is automatically adjusted according to the concentration of a water sample, the effect of adjusting the measuring range is achieved, the accuracy of test data is guaranteed, when the measured water sample does not reach a measurement window, the sensing unit can know that the water sample measurement environment does not meet the requirement, and the water sample can be accurately measured. When a water sample is measured, the interior of the sensor starts alarming and does not measure ...

Method for preparing metallic hollow microsphere powder

The invention discloses a method for preparing metallic hollow microsphere powder. In the method, a molding device is used for implementing according to the steps of vacuum-pumping, heating and smelting, active aerification, hollow spheroidization and the like. The molding device comprises a large vacuum chamber communicated with a deflation valve and a vacuum pump, the large vacuum chamber is internally provided with a copper roller and a high frequency induction coil, the high frequency induction coil is internally provided with a crucible, a lower end nozzle is aligned with the face of the copper roller, the large vacuum chamber is connected with a small vacuum chamber, the opening of the crucible is communicated with the small vacuum chamber, and an additional passage is arranged between the large vacuum chamber and the small vacuum chamber; the small vacuum chamber is communicated with a mixing chamber, and the mixing chamber is respectively communicated with a hydrogen tank and an ...

Wall-mounted water quality monitor

The invention provides a wall-mounted water quality monitor which comprises a hoistway, a pipeline transversely penetrates into the hoistway, a monitor case is fixedly mounted on the inner wall of the hoistway through bolts, a monitor body is fixed to one side of the monitor case, a sensor is mounted at the top of the monitor body, the pipeline is arranged at the bottom of the monitor case, and the sensor is mounted at the bottom of the monitor case. A water pump is fixed to the position, located at the bottom of the monitor case, of the inner wall of the well, and a pipeline is connected with the water pump through a connecting pipe. Compared with the prior art, the water quality monitor integrates a water quality monitoring sensor, a gas monitoring sensor, a standard-exceeding reserved sample, a data processing unit, an internal waterway pipeline control unit and a water sampling unit; the device can monitor gas and water quality index data in a tube well in real time, reduces the downhole ...

High-entropy alloy solder used for welding copper and aluminum and preparation method thereof

The invention discloses a high-entropy alloy solder used for welding copper and aluminum, which comprises the components according to the atomic percent with the total percentage being 100%: 6-14% of Ti, 10-20% of Al, 10-20% of Fe, 15-25% of Cu, 10-18% of Ni, 6-14% of Co, 0.5-4.5% of Sn and 0.03-3.5% of addition element, wherein, the addition element is one selected from Bi, Ga, In or RE. The invention also discloses a preparation method of the high-entropy alloy solder foil, which adopts stepwise smelting technique and a single-roller rapid solidification device to prepare the high-entropy alloy solder foil. The high-entropy alloy solder has good flexibility and is convenient for processing and assembly; when in welding, the high-entropy alloy solder has good metallic matching property with Al and Cu; the soldering seam is good in corrosion-resistant performance, the welding seam is single-phase fcc solid solution tissue, no friable intermetallic compound is generated, and the comprehensive ...

Bipyramid degree rotary dryer device

The utility model discloses a bipyramid degree rotary dryer device, including U -shaped base (1), be equipped with a pivot (2) respectively at the top at base (1) both ends, even have between two pivots (2) a cylinder drier (3), the middle part of cylinder drier (3) is the cylinder, and upper and lower both ends are conical, and has a plurality of dispersion strips (4) in the distribution of the middle part of cylinder inner wall. The utility model discloses a cylinder drier both ends are the toper, and just the middle part inner wall distributes has the dispersion strip, can effectually avoid the material to agglomerate, and drying effect is better.

Method for synthesizing 2-methylmercapto group-4 ethyl formate pyrimidine

The invention relates to a synthetic method for 2-methylthio-4-pyrimidine carboxylic acid ester derivates, which mainly solves the technical problems that the existing preparation method has a long process and a low yield, the raw material is expensive, and the operation is not easy. The method mixes ethyl pyruvate with N, N dimethylformamide dimethylal, heating up until a refluxing reaction occurs for 2-3h, concentrating to obtain the coarse product of 4-dimethylamino-2-ketone-3-ethyl crotonate, dissolving the product into ethanol, adding 2-methyl isothiourea sulphates and triethylamine, heating up until a refluxing overnight reaction, removing the dissolvant by vacuum distillation, separating with column chromatography to obtain 2-methylthio-4-ethyl formate pyrimidine. The invention provides a synthetic method for 2-methylthio-4-pyrimidine carboxylic acid ester derivates, wherein the raw material is inexpensive, the reaction is easy to operate, and the total yield is high.

GRG three-dimensional digital modeling construction method and system thereof

The invention discloses a GRG three-dimensional digital modeling method and a system thereof. The construction method comprises the steps that main structure three-dimensional digitization: a main structure three-dimensional digital model is constructed according to construction information of a GRG required to be installed on the site; GRG model checking: a GRG model and the main structure three-dimensional digital model are compared, and the GRG model is amended; coordinate unification: the main structure three-dimensional digital model and the GRG model are unified; installation: a common three-dimensional coordinate is fed back to the site and the GRG is installed. According to the method and the system, the main structure three-dimensional digital model is constructed according to the construction information of the GRG required to be installed on the site with a three-dimension technique, the problems, such as collision and gaps, occurring in the installation process can be predicted ...

High-entropy alloy welding wire for welding titanium/stainless steel in TIG (Tungsten Inert Gas) mode and application

The invention discloses a high-entropy alloy welding wire for welding titanium/stainless steel in a TIG (Tungsten Inert Gas) mode. The high-entropy alloy welding wire is formed by the following components in atomic percent with the total percent of 100 percent: 5 percent of Ti, 5 percent to 10 percent of Fe, 25 percent to 30 percent of Cr, 25 percent to 35 percent of Cu, and 25 percent to 35 percent of Ni. The invention also discloses a method for using the high-entropy alloy welding wire to weld the titanium/ the stainless steel in the TIG mode. The welding material cost is low, the preparation is simple, the welding method is convenient and easy to implement, the adaptability is wide, and an obtained titanium and stainless steel welded joint is good in formation of weld, free of cracks, high in intensity and good in toughness.

Power supply case with protection structure

The invention relates to the field of cases, and discloses a power supply case with a protection structure, the power supply case comprises a base and a box body in sliding fit with the base, both sides of the box body are provided with a support assembly and a control assembly for driving the support assembly to deform, and a guide rail for the support assembly to slide is fixedly mounted in the base; the control assembly can drive the supporting assembly to deform so that the box body can rotate relative to the guide rail, and the right-angle state between the bottom face of the box body and the front surface of the base can be switched into the acute-angle state. Through cooperation of the guide rail, the control assembly, the supporting assembly and the like, the box body can be kept horizontal so that electric parts in the box body can be disassembled, assembled and overhauled conveniently, the box body can be driven to deflect downwards to form an acute angle with the base, a worker ...

High-entropy alloy solder used for welding hard alloy and steel and preparation method thereof

The invention discloses a high-entropy alloy solder used for welding hard alloy and steel, which comprises the components according to atomic percent with the total percentage being 100%: 10-15% of Ti, 18-25% of Cu, 12-18% of Ni, 10-15% of Zr, 15-20% of Fe, 10-15% of Cr, 0.5-2.5% of Sn and 0.01-2% of trace element, wherein, the trace element is one selected from Bi, Ga or In. The invention also discloses a preparation method of the high-entropy alloy solder foil, which adopts ultrahigh vacuum electric arc furnace stepwise smelting technique and a single-roller rapid solidification device to prepare the high-entropy alloy solder foil. The high-entropy alloy solder has good flexibility and is convenient for processing and assembly; when in welding, the high-entropy alloy solder has good matching property with the welded metal and alloy; the soldering seam is good in corrosion-resistant performance, the welding seam is single-phase fcc solid solution tissue, and the comprehensive mechanical ...

Flux-cored alloyed ductile cast iron homogeneous gas-welding wire and electric welding rod

The invention discloses a flux-cored alloyed ductile cast iron homogeneous gas-welding wire which consists of H08A steel strip and alloyed flux-cored powder cladded in the H08A steel strip, and the flux-cored powder comprises the components based on the weight percentage: 10-20% of graphite, 50-60% of 75 Si-Fe, 5-8% of Ni, 2-5% of Ti, 3.8-6% of Mg, 0.8-2.5% of Bi, 1-2.5% of Zr, 2.0-4.5% of Ba, 1.5-2.8% of Ce and 4-6% of RE, and the total weight percentage is 100%. The invention also discloses an electric welding rod, a flux-cored welding core of which consists of the H08A steel strip and the alloyed flux-cored powder cladded in the H08A steel strip, and the coating applied on the welding rod comprises the components based on the weight percentage: 5-11% of marble, 10-20% of dolomite, 5-15% of potassium feldspar, 5-15% of fluorite, 8-16% of graphite, 15-25% of 75 silicoferrite, 6-10% of 30 calcium silicon alloy, 4-6% of aluminium powder, 3-7% of ferrous powder, 5-15% of white slime, 0.5- ...

Preparing process of mezlocillin

The invention relates to a technique for preparing mezlocillin, belonging to the medicine compound preparation technology, wherein the mezlocillin is prepared by acylation reaction between aminobenzyl trihydrate and 1-chloroformyl-3mesyl-2-imidazolidone under the catalysis of an alkaline substance and then addition of an acidulant for acidification and crystallization. The technique for preparingthe mezlocillin is characterized in that: ethyl acetate is added into a solution before acidification; the acidulant is added into the solution for two times, and the acidulant added for the first time is required to achieve the effect that the feed solution has turbidity; an inoculating crystal is added into the feed solution for growing the crystal for 30 to 40 minutes, and then the residual acidulant is dripped; and the pH value of the feed solution is adjusted to between 1.6 and 2.0, and then the feed solution undergoes temperature reduction and crystallization. The technique for preparing the ...

Characteristic extraction method of motor imagery electroencephalogram signals

The invention relates to a characteristic extraction method of motor imagery electroencephalogram signals. According to the method, firstly, the collected electroencephalogram signals are preprocessed, then EMD is performed on all leads of signals to obtain multi-order IMF signals, then the IMF signals which are identical in number of orders are selected as new signals, a spatial filter is obtained through a CSP algorithm, characteristics of the electroencephalogram signals are extracted and input into a classifier for classification, the optimal value of parameters in the EMD and CSP is selected according to the classification accuracy rate, and finally the electroencephalogram characteristics under the optimal parameter are obtained. Based on the EMD and CSP, characteristic extraction is performed on the motor imagery electroencephalogram signals, the signals can be decomposed into the multiple IMF signals in a self-adaptation mode according to characteristics of the electroencephalogram ...

Face recognition module with color screen

The embodiment of the invention discloses a face recognition module with a color screen, which comprises a face recognition module and a bracket for mounting the face recognition module, and further comprises a light source assembly for generating a light source and a color film for showing colors or patterns through illumination, the light source assembly is mounted on the bracket and is positioned on the side part of the face recognition module, and the color film is positioned on the side part of the face recognition module. The color film is arranged in the illumination range of the light source assembly; the light source assembly is arranged in the enclosure cavity surrounding the face recognition module on the support, the color film is designed on the periphery of the face recognition module, and light on the light source assembly irradiates on the color film while face recognition is carried out, so that the color film shows specific color patterns, the interestingness and the interaction ...

Inflating molding device for inner tube

The invention discloses an inflating molding device for an inner tube, which belongs to the technical field of vehicle tire molding devices. The inflating molding device for the inner tube comprises a bracket, a first acting cylinder, a second acting cylinder, a fixing disc, an upper mold of the inner tube, and a lower mold of the inner tube, wherein the bracket comprises upright posts, a pair of bases and a top beam, and guide rails are fixedly arranged on one side of a pair of upright posts respectively; the first acting cylinder is fixed in middle of the top beam, and the first acting cylinder post of the first acting cylinder penetrates the top beam downwards; the second acting cylinder is fixed on the base, and the second acting cylinder post of the second acting cylinder faces upwards and retains upper-lower correspondence with the first acting cylinder; the fixing disc is fixed on the base, a cylinder post hole is formed in the center of the fixing disc, and an inner tube mold is ...