107results about How to "Take full advantage of performance" patented technology

The invention relates to a cold and hot data identification threshold value calculation method, device and system. The method comprises the following steps of transmitting a data block IO (input/output) statistical information query command to each storage node; receiving IO statistical information from each storage node; performing addition operation on IO count field values in the same count ranges in the IO statistical information received from each storage node, generating an IO count statistical value corresponding to each count range, and obtaining a minimum IO count value in the count range corresponding to a minimum IO count statistical value in high IO count statistical values when data blocks corresponding to the high IO count statistical values are filled with hot data storage media as a cold and hot data identification threshold value according to the overall capacity of the hot data storage media, the sizes of the data blocks and the IO count statistical values in each storage node. According to the method, the device and the system, each storage node in a storage system can independently finish the hierarchical data storage of the whole storage system in a coordination way.

The invention discloses a fluorine-containing novolac resin, a preparation method of the fluorine-containing novolac resin and application of the fluorine-containing novolac resin, serving as a curing agent. The preparation method of the fluorine-containing novolac resin comprises the following step of performing a reaction of hexafluoro bisphenol A and solid paraformaldehyde by using organic acid as a catalyst to obtain the fluorine-containing novolac resin. The fluorine-containing novolac resin can be used as the curing agent to be cured with epoxide resin. High-content fluorine is induced into the curing agent, so that the comprehensive performance of an epoxide resin cured product is greatly promoted. A production process is controlled by adopting an acid catalysis method and a method of feeding paraformaldehyde serving as the raw material in batch. In the production process, the three wastes are not discharged, wherein a reaction solvent can be recycled. The production process is environmental-friendly. The structure of the fluorine-containing novolac resin is shown in the following formula (1) or (2).

The invention aims at providing a fiber reinforce plastic (FRP) reinforced concrete-filled steel tube combination column which comprises a steel tube, a hoop rib, an FRP reinforced rib and a longitudinal reinforcement, wherein the hoop rib and the FRP reinforced rib are arranged in the steel tube; the inner wall of the steel tube is provided with fixed angle iron; the end part of the FRP reinforced rib is fixed on the angle iron; the FRP reinforced rib is provided with a hole, and the hoop rib passes through the hole in the FRP reinforced rib; the longitudinal reinforcement is fixed on the hoop rib; the steel tube is filled with concrete. An FRP reinforced rib plate internally provided with the hoop rib and the longitudinal reinforcement is arranged in the FRP reinforced concrete-filled steel tube combination column, and the concrete can be separated again, so that the restraint effect of the concrete is improved, the bearing capacity of the concrete is improved, and the tube wall on the stressed side is effectively prevented from being bended. By adopting a structure of enabling reinforced concrete, the FRP reinforced rib and the steel tube to cooperative work, the FRP reinforced concrete-filled steel tube combination column is simple in structure and convenient to construct, and has the characteristics of being light in weight, high in carrying capacity and good in ductility and shock resistance.

The invention discloses an automatic speed adjustment control system of a toothed roll crusher and a control method. An image collecting module carries out image pre-treatment on ore pictures. The planar projection area S of a single ore body and the overall planar projection area SZ of the whole stack of ore are obtained through an image processing module. A programmable logic controller (PLC) automatic control module is used for controlling the rotation speed of a motor. The geometric shape of the ore and the coverage rate of coming materials are judged through an image recognition method and then compared with preset parameters in a PLC so that the rotation speed of the motor can be automatically controlled. Therefore the toothed roll crusher can operate reasonably under different work conditions, the resource waste and use failures caused by underload and overload are effectively avoided, the repairing workloads of equipment are reduced, the economic benefits are improved, and the performance advantages of the crusher are brought into full play. The PLC is used for automatically controlling the rotation speed of the motor through programming, the original electromechanical system of the crusher is not changed, the automation degree is high, and the method is simple and reliable.

The invention discloses a nanocarbon reinforced copper-based composite material for maglev trains. The nanocarbon reinforced copper-based composite material is characterized in that the nanocarbon reinforced copper-based composite material comprises 0.1-5% of surface-modified carbon nanotubes, 0.1-5% of surface modified graphene, 2-10% of graphite powder, 1-4% of chromium powder, 1-8% of lead powder, 2-10% of tin powder, 0.1-1% of zirconium powder, 0.01-0.5% of lanthanum powder, and the balance of copper powder, wherein the surface-modified carbon nanotubes are carbon nanotubes obtained by modifying carbon nanotubes with an aqueous solution of gallic acid, and the surface-modified graphene is graphene modified with an aqueous solution of rutin. A copper-based composite material has low impurity content, and maintains the structure of an added reinforcing phase component complete, and various added components have a co-reinforcing effect, and significantly improve the strength, the hardness and the current-carrying friction and wear properties of the copper-based composite material. The invention also discloses a preparation method of the copper-based composite material. The methodhas the advantages of simple process, easiness in production, and broad application prospect.

The present invention discloses an ordered carbon nano-tube reinforced aluminum matrix composite material and a preparation method thereof. The composite material comprises aluminum or an alloy thereof adopted as a matrix material and carbon nano-tubes orderedly dispersed in the matrix material. The method comprises: carrying out cross-lamination on plural ordered carbon nano-tube thin film layers and plural aluminum layers or aluminum alloy layers, and carrying out hot rolling to form the ordered carbon nano-tube reinforced aluminum matrix composite material, wherein the ordered carbon nano-tube thin film layer is formed by the plural orderly-dispersed carbon nano-tubes. According to the present invention, the ordered carbon nano-tube thin film such as the superaligned nano-tube thin film and the like is adopted to carry out lamination and hot rolling with the aluminum foil to prepare the composite material so as to achieve orientation distribution of the carbon nano-tubes in the aluminum matrix, completely provide excellent mechanical property and functional characteristics of the carbon nano-tubes, achieve mechanical enhancement and function modification on the aluminum matrix composite material, combine with the hot rolling molding, and provide important practical application prospects.

The invention relates to a torque distributing and controlling method based on efficiency optimization for double motors in a hybrid power system. The hybrid power system supports the double motors (namely a TM motor and an ISG motor) to simultaneously carry out driving work and electricity generating work. The method comprises the steps: providing an all-condition efficiency graph about the driving and the electricity generating of the TM motor and the ISG motor under the all working condition; calculating the optimized distribution of the driving torque and the optimized distribution of the electricity generating torque between the double motors; associating each of Rate_Mot and Rate_Gen, which are obtained under the condition of different rotating speeds, with the rotating speed and the torque T distributed into the TM motor and the ISG motor to obtain an off-line computation table; and distributing the torque between the double motors. Through the adoption of the method disclosed by the invention, the torque can be reasonably and efficiently distributed between the double motors, the respective performance advantage can be fully taken, the work efficiency of the system is obviously improved, the energy consumption cost of a vehicle is reduced, and therefore, the goals of energy conservation and environmental protection can be realized.

The invention discloses a manufacturing method for a precisely cast titanium alloy impeller. The manufacturing method is characterized in that alloy comprises the following components in percentage by mass: 4-5% of Al, 0.7-0.8% of Ni, 0.5-0.6% of Nb, 0.5-0.7% of V, 0.3-0.4% of Cr, 0.1-0.2% of Si, 0.07-0.09% of In, 0.03-0.04% of Cu, 0.03-0.04% of Pr, 0.01-0.02% of Y, 0.75-0.8% of Mn, 0.5-0.7% of Mo, 0.7-0.9% of Sn and the balance of titanium and inevitable nonmetal impurities. The strength of a titanium alloy plate is higher than 1200 MPa.

The invention discloses a preparation method for a titanium alloy-hydroxyapatite salt biological ceramic porous material. The preparation method for the titanium alloy-hydroxyapatite salt biological ceramic porous material has the characteristics that the 3D printing technology is applied, and by means of the manner that the proportion value of hydroxyapatite salt powder to titanium alloy matrix powder of all fusion covering layers is dynamically adjusted, the titanium alloy-hydroxyapatite salt biological ceramic porous material with titanium alloy being a central layer and titanium alloy-hydroxyapatite salt being a transition layer is prepared. According to the preparation method for the titanium alloy-hydroxyapatite salt biological ceramic porous material, because the performance advantages of various materials are sufficiently utilized and the internal stress is further reduced, excellent mechanical and biological properties are exhibited, therefore, the preparation method for the titanium alloy-hydroxyapatite salt biological ceramic porous material is suitable for the field of bone tissue replacing or implant repairing.

The invention relates to a fabricated shear wall structure in combination of steel plates and section steel. According to the fabricated shear wall structure, a plurality of long holes are formed in the two oppositely arranged steel plates correspondingly; a plurality of internal section steel are arranged between the two side steel plates; the steel plates and the internal section steel are connected and fixed through the long holes; edge section steel are arranged at the two ends of the two side steel plates correspondingly, and a plurality of internal cavities are formed; and then concreteis poured into the cavities to finally form the fabricated shear wall structure. According to the fabricated shear wall structure in combination of the steel plates and the section steel, building layout is flexible, the degree of industrialization of steel structure manufacturing is high, design is simple, the steel quantity is economical, components are simple to manufacture, and construction isconvenient and quick; and the fabricated shear wall structure can give full play to the performance advantages of steel products and the concrete, and has the characteristics of environmental protection and high anti-seismic performance.

The invention relates to a novel compound material which is formed by an explosion welding technique and a common low alloy steel Q345B as well as by adopting the ultra-low-carbon Ni-Cr-Mo 5923hMo alloy steel as a high anti-corrosion layer. The manufacture method of the invention includes the techniques of surface pre-treatment, explosion welding compounding and annealing for removing a stress. The structure of the invention is that the common low alloy steel is combined with the metallurgy of a 5923hMo anti-corrosion steel multiple layer on the common low alloy steel. The compound material of the invention has the advantages that the multiple layer has excellent anti-corrosion property to most corrosion properties and extremely excellent properties of pit corrosion resistance, crevice corrosion resistance and stress corrosion cracking resistance caused by chlorides; while a basic layer plate has excellent mechanical property to fully play the excellent physical and chemical properties of two metals. The novel compound material can not have the phenomena of cracking or separation on the interface between the basic layer and the composite layer after being processed by the hot and cold techniques such as annealing, leveling and cutting, etc. Analyzed by a physical test and a chemical test, the property index of the novel compound material is completely in accordance with the standard of JB4748-2002 and can meet the property requirements of a device to special materials under execrable working conditions.

The invention discloses a dead-time optimization control method suitable for a SiC-based bridge arm power circuit. The time for reducing grid voltage to reach threshold voltage, channel current reduction time and drain-source voltage rising time are comprehensively compared, and maximum dead time is preset; the time for reducing grid voltage to reach threshold voltage can be calculated according to a grid drive equivalent circuit; the channel current reduction time is selected in an offline state and under heavy-load and high-temperature conditions; the grid-source voltage reduction edge and the drain-source voltage reduction edge of a switch tube are detected by adopting upper and lower tube auxiliary circuits through edge detector, and their difference is the drain-source voltage rising time. By comparing these times, an optimal dead time is output, the optimal dead time consumed after a turning-off signal of the switch tube is output is the turning-on signal output moment of the corresponding switch tube. On the premise that the working reliability of a system is ensured, the power consumption caused by dead time reduction is effectively reduced, and the working efficiency of a convertor is improved.

The invention discloses a preparation method of a titanium alloy plate. A TC4 casting blank is prepared by adopting a plasma-vacuum consumable arc combined process; the first heating number finish forging temperature is 880 DEG C, and the deformation is 60-75%; the second heating number finish forging temperature is 850 DEG C, and the deformation is 25-65%; and the third heating number final heating temperature is 800 DEG C, and the deformation is 45-75%. A 20mm finished plate is rolled, the pass deformation is 4-6mm, and reversing rolling is carried out when the deformation is 50%; and when a 2-10 mm plate strip is rolled, hot rolling is conducted firstly, then warm rolling is conducted, the rolling temperature of the first heating number is 960-1050 DEG C, the rolling temperature of the second heating number is 950-1000 DEG C, and the warm rolling technology is adopted in the third heating number and the fourth heating number. The annealing temperature is 600-650 DEG C, and the heat preservation time is 5-10 hours. According to the preparation method, high-temperature melting, dissolving, flotation and sedimentation are adopted to remove inclusions, and a partial pressure principle is utilized to remove gas, so that burning loss of low-melting-point alloy element aluminum is reduced, an electrode preparation process is omitted, and a production process is simplified; titanium residues can be directly utilized, so that the ingot casting cost is reduced; and a product has a uniform fine grain structure, and the preparation method has the advantages of being wide in machining temperature range, good in strength, plasticity and fracture toughness matching property.

The invention discloses a distributor applied to a falling film type evaporator. The distributor comprises a baffle plate, a pressure box and a gravity box, wherein first through holes are uniformly and closely distributed in the bottom of the gravity box, the bottom of the gravity box are provided with a plurality of clapboards in the width direction, the pressure box is contained in the gravity box, an interval exists between the circumference of the pressure box and the circumference of the gravity box, second through holes are closely distributed in the top of the pressure box, the baffle plate is arranged above the pressure box, the two sides of the baffle plate are fixed on the gravity box, pore plates are arranged on the edges of the baffle plate and are provided with cover plates, intervals are reserved between the pore plates and the cover plates to form ventilation slots, and an inlet tube is arranged on the baffle plate and is communicated with the pressure box. According to the distributor applied to the falling film type evaporator, which is disclosed by the invention, the pressure potential energy and the gravity potential energy are mutually matched to distribute coolant working mediums, so that the reliability is high, the uniformity is good, the fluid distribution is uniform, the coolant working mediums are prevented from splashing and leaking, and the pressure loss is small; the distributor is matched with the falling film type evaporator, so as to be capable of fully exerting the performance advantages of the falling film type evaporator and to have good manufacturability.

The invention discloses a method for preparing an aluminium-titanium alloy blade. The aluminium-titanium alloy is characterized by comprising the following components in percentage by mass: 11-12% of Al, 3-4% of Sn, 0.8-0.9% of Fe, 0.1-0.2% of Si, 0.1-0.2% of Cr, 0.3-0.4% of Ca, 0.5-0.6% of Bi, 0.05-0.07% of In, 0.03-0.04% of Cu, 0.01-0.02% of La, 0.03-0.04% of Y, 0.01-0.03% of Mn, 0.05-0.06% of V and the balance of titanium and inevitable nonmetal inclusions, and the strength of a titanium alloy plate is more than 1200MPa.

The invention discloses a dimeric fatty acid diamine and a preparation method thereof. The invention adopts the dipoly fatty acid diamine as a raw material and provides a method for preparing dimeric fatty acid diisocyanate. The preparation method comprises the steps: by weight, mixing 30-80 parts of ether reaction medium, 4 parts of metal hydride reducing agent and 5 parts of dimeric fatty acid diamide under ice-water bath, carrying out temperature rising, backflow and reaction for 12-50 hours on the obtained reaction mixture, then carrying out treatment of extraction, washing, drying and decoloring and preparing and obtaining the dimeric fatty acid diamine which can be used for carrying out condensation with triphosgene directly and preparing the dimeric fatty acid diisocyanate. The invention prepares the dimeric fatty acid diamine by the reduction of dimeric amide, and has high reaction yield and pure products. The method for directly preparing DDI has mild reaction conditions in the preparation process, simple and feasible technique and easy implementation, and the synthetic method of the products is suitable for industrial production.

The invention discloses a novel composite material which takes W6Mo5Cr4V2 high-speed steel as a high wear-resistance, high hardness and high strength covering layer, and adopts Q345 and an explosive welding process. The unique production process comprises the following steps of: selecting researched main body explosive RB53 and denotation explosive cyclonite; overlapping three layers of explosive at a denotation point and peripheral parts, wherein the total thickness is increased by 10-15mm compared with that of other areas; and carrying out a secondary sectional annealing thermal treatment process. The composite material provided by the invention has the advantages that the covering layer has the complete advantages of the high-speed steel W6Mo5Cr4V2, and the substrate layer Q345 has a good mechanical property, so that the perfect combination of the two metal materials of different properties is realized, the property advantages of one single material is brought into full play, and particularly the composite material has wide application prospect in fields requiring cost conservation and producing knives, dies and the like of irregular structures.

The invention discloses a porous NiAl/Al2TiO5 composite material and a preparation method thereof. Industrially pure Ni, Al, TiO2 and Al2O3 powder are used as raw materials of the composite material. The preparation method comprises the following steps of: performing high-temperature sintering reaction (TiO2+Al2O3=Al2TiO5) to synthesize Al2TiO5, mixing the crushed Al2TiO5 and Ni and Al powder, adding C powder serving as a pore forming agent and a heat generating agent, uniformly mixing the raw materials, pressing the mixture into a blank, and performing self-propagating high-temperature synthesis reaction to generate the porous composite material consisting a NiAl phase and a Al2TiO5 phase. The adjustable ranges of the strength, the porosity and the thermal expansion coefficient of the porous composite material are large; and the production process is simple, the yield is high, and the porous composite material can be used as a carrier and a filter in catalysis and environmental purification.

The invention belongs to the field of automobile manufacturing, and particularly provides a cantilever beam supporting device and a preparation method thereof. The cantilever beam supporting device comprises a base and a rod piece connected with the base, wherein the base and the rod piece are made of fiber-reinforced resin-based composite materials. The cantilever beam supporting device has the characteristic of lightweight so that the weight of a vehicle can be reduced, and the energy-saving and emission-reducing effects can be achieved. Meanwhile, the cantilever beam supporting device can effectively reduce the resonance effect of the cantilever beam supporting device and a vehicle frame, breaking can be prevented, quality risks are avoided, and the preparation method is simple and feasible.

The invention discloses an assembly type steel bridge super-tough durability prefabricated pavement layer structure. The structure comprises a steel bridge precast beam section, a steel bridge deck slab, a pavement section bonding layer, a prefabricated pavement layer and a splicing piece used for splicing the pavement layer structure, all of which are sequentially arranged from bottom to top. Theinside of the prefabricated pavement layer is paved with a reinforcing mesh frame, and protruding connecting pieces extending out of the prefabricated pavement layer along the side portions are arranged on the side portions of the reinforcing mesh frame. The two ends of the steel bridge precast beam section extend out of the prefabricated pavement layer to form assembly splicing sections. The splicing piece is arranged between the assembly splicing sections of two adjacent pavement layer structures to form a splicing space. The splicing piece is used for connecting the protruding connecting pieces on the adjacent to-be-spliced pavement layer structures. By the adoption of the assembly type steel bridge super-tough durability prefabricated pavement layer structure, a super-tough resin bonding layer and super-tough resin concrete serve as pavement layer structure materials, and super-tough durability of the pavement layer can be achieved.