44results about How to "Suitable for actual production applications" patented technology

The invention discloses a controlled manufacturing method for a shark imitated drag reduction surface structure under a variable environment. The method comprises the following steps of: 1, preparing an original-ratio sharkskin biological female template; 2, designing shape parameters of a deformed imitated shark required to be manufactured according to the requirement of an application environment; and 3, preparing a variable-proportion bionic drag reduction skin according to the application environment. The variable-proportion bionic sharkskin shaped drag reduction skin prepared by using the method has a functional structure completely in accordance with the original sharkskin shape, but has different shape parameters. By using the method for making the bionic drag reduction skin, the size of the surface shape of the skin can be adjusted according to the parameters such as common speed, different parts of the outer surface and the medium viscosity of an application object, so that the drag reduction effect of the shark imitated drag reduction skin is in an optimal state. The method has high practical value and broad application prospect in the technical field of bionic manufacturing.

The invention relates to a pipe bending method, in particular to a bending method of pipes with a flexible chained-ball mandrel and solves the problem that high bending degree in the existing process of bending pipes having a mandrel causes mutual interference. The method includes: 1, threading a plurality of balls with a rope having a restraint ring at one end; 2, inserting a combined flexible chained-ball mandrel into a pipe to be bent; 3, placing a first rubber plug into one end of the pipe to be bent, fastening the first rubber plug through a first fastener, placing a second rubber plug into the other end of the pipe to be bent, and fastening the second rubber plug through a second fastener; 4, placing the pipe to be bent, onto a female die, and driving a male die to move down by a press until the pipe to be bent is bent; 5, after bending, loosening the first fastener, the second fastener, the first rubber plug and the second rubber plug to obtain a bent pipe. The bending method of pipes with one flexible chained-ball mandrel is applicable to pipe bending.

The invention discloses a naked eye visual colorimetric method-based probe {7-hydroxy-3-[(3-pyridine methylene) imine]-2H-1-benzopyran} for detecting nickel ions in an aqueous medium and a probe-based nickel ion detection kit and test paper. The nickel ion probe can be synthetized only by a three-step reaction; a detection mechanism is based on a complexing reaction; and the nickel ions in a solution can be detected by using a naked eye visual colorimetric method. The nickel ion detection kit provided by the invention comprises a reagent stock solution 1 and a reagent stock solution 2, wherein the reagent stock solution 1 is used as a buffer solution, and the reagent stock solution 2 is used as a nickel ion probe solution. The nickel ion detection test paper provided by the invention comprises the 7-hydroxy-3-[(3-pyridine methylene) imine]-2H-1-benzopyran and a solid carrier. The naked eye visual colorimetric method-based probe for detecting the nickel ions in the aqueous medium is capable of realizing the high-sensitivity and high-selectivity detection on trace nickel ions in the aqueous medium, has convenience in detection and visual judgment, and has a huge application prospect in the environmental-protection field.

The invention relates to a method for manufacturing larger-area anti-adsorption surface with an emulational shark skin appearance, comprising two steps: (1) manufacturing a rolling female template device; and (2) manufacturing the anti-adsorption surface by adopting the ultraviolet-light curing technology. The ultraviolet-light curing technology is used for curing material rapidly to form the surface in a needed structure by using the sensitivity of the material to ultraviolet light. The micro embossing moulding method is used for rapidly carrying out micro-replication and nano-replication to structural patterns under the micro-nano scale with low cost. The method uses the ultraviolet-light curing technology and the micro embossing moulding technology to manufacture the larger-area anti-adsorption surface with the emulational shark skin appearance. The method has good practical value and wide application prospect in the technical field of biomimetic manufacturing.

The invention belongs to the technical field of composite material processing, and particularly relates to an appropriate-temperature cutting real-time control method of a composite material. The appropriate-temperature cutting real-time control method comprises the steps of: establishing an appropriate-temperature cutting real-time control system of the composite material, and spraying an ultralow-temperature gas to a cutting zone by using an atomizing nozzle; measuring temperature of the cutting zone in real time by means of a thermocouple near the workpiece cutting zone on the basis of reducing the cutting temperature, and feeding back the temperature of the cutting zone to a displacement platform controller; adjusting the distance between the cutting zone and the atomizing nozzle installed on a displacement platform in real time by taking the temperature of the cutting zone as a signal, adjusting the temperature of the cutting zone to be equal to an expected value, and achieving the effect of cutting the material within an appropriate temperature interval, so as to obtain the optimal processed surface quality. The appropriate-temperature cutting real-time control method realizes the purpose of directly controlling the temperature of the cutting zone, is fast in temperature adjusting speed, can ensure the high efficiency and accuracy of temperature control, is used for direct adjustment in an open space, and is more suitable for actual production application.

The invention aims at providing a pinfin drivepipe type reinforced heat transfer element, which comprises two two-way adapter connectors, a groove drivepipe, a pinfin pipe; the two two-way adapter connectors are respectively connected with the two ends of the pinfin pipe; the pinfin pipe is provided with an inner channel; the parts of the two-way adapter connectors connected with the pinfin pipe are inserted in the inner channel of the pinfin pipe; the groove drivepipe is externally sleeved on the pinfin pipe; each of the two-way adapter connectors comprises a first channel and a second channel; the first channel is communicated with a ring gap formed by the pinfin pipe and the groove drivepipe; and the second channel is communicated with the inner channel of the pinfin pipe. The pinfin drivepipe type reinforced heat transfer element provided by the invention has the advantages of good heat transfer property, reasonable structure, no bypass leakage flow and long service life and being safe and reliable.

The invention discloses a preparation method of an iopromide intermediate, which comprises the following steps: (I) mixing a compound 2, a first solvent and methoxyacetyl chloride, the first solvent being selected from DMA and/or DMF; (II) continuously adding an acid-binding agent and 3-amino-1, 2-propylene glycol into the system after the reaction in the step (I), adding the reaction liquid into a third solvent for crystallization after the reaction is finished, and adding a second solvent into the reaction liquid before or simultaneously adding the reaction liquid into the third solvent. The method has the advantages of efficient and convenient synthesis process, high yield and high product purity, can greatly reduce the production cost, is more suitable for actual production and application, and is applied to preparation of iopromide.

The invention discloses a GaN transistor covered with a nanopillar barrier and a preparation method thereof. AlxGa1-xN alloy nanopillars are distributed on the surface of the barrier layer of a transistor and correspond to screw dislocations in the barrier layer one to one. The method, by controlling the TMGa flow rate and the V/III ratio during the growth of AlxGa1-xN barrier, not only can avoidthe formation of V-shaped defects at the termination of screw dislocations, but also can form 1-3 nm AlxGa1-xN alloy nanopillars at the termination of screw dislocations. As the alloy nanopillars fillthe V-shaped defects at the termination of screw dislocations on the barrier surface and increase the effective barrier thickness at the termination of the screw dislocations, the gate leakage current is suppressed and the withstand voltage characteristic of the transistor is improved.

The invention discloses a ceramic dielectric material, a ceramic capacitor and a preparation method thereof, and belongs to the technical field of materials. The ceramic dielectric material comprises the following components in percentage by molar mass: 94.0-98.0% of barium titanate, 1.2-2.5% of a glass phase, 0.5-1.0% of an anti-reducing agent, 0.5-1.5% of an alkali metal compound and 0.5-3.0% of an oxide of a rare earth element, the oxides of the rare earth elements comprise Dy2O3, Y2O3 and Tm2O3, and the obtained ceramic dielectric material has stable capacitance characteristics, high dielectric constant and high temperature stability and is easier to laminate; the ceramic capacitor is formed by sintering a ceramic dielectric material serving as a raw material, the obtained ceramic capacitor meets the X5R standard, and the influence of sharp capacitance change caused by the temperature can be well stabilized within the normal temperature section; meanwhile, the preparation methods of the ceramic dielectric material and the ceramic capacitor provided by the invention are simple, simple and convenient to operate and free of toxic and harmful substances, and the prepared ceramic capacitor is high in density, small in crystal grain, few in defect and suitable for actual production and application.

The invention discloses a high-hardness Cu-based material containing interface layers and a preparation method thereof. The material comprises Cu matrix layers and the interface layers, wherein the Cumatrix layers and the interface layers are alternately superposed; an initial layer and a final layer are Cu layers; the interlayer modulation ratio is 10:1-50:1; the interface layers are Nd, Zr, Ag,CuZr amorphous and CuNb amorphous; the thicknesses of the Cu layers are the same; the thickness range of the single Cu layer is 5-50 nm; the thicknesses of the interface layers are the same; and thethickness range of the single interface layer is 0.5-2 nm. The prepared high-hardness Cu-based material has such mechanical properties as higher hardness; and the interface layers generate no side effect on the matrix Cu. The preparation method of the Cu-based material is simple in production process, low in cost and suitable for industrial application and automatic batch production, and has unique structure and performance advantages in such fields as microelectronic components, power transmission devices, integrated circuits and printed circuits.

The invention provides a method for regulating and controlling the creep anisotropy of a cold-rolled pre-deformed alloy. In the method, two times of cold rolling is carried out on an aluminum alloy plate by adopting a non-equal-ratio cross rolling mode, and the creep anisotropy is regulated and controlled through the deformation proportion between the two times of cold rolling. The method specifically comprises the following steps that solid solution is carried out on the aluminum alloy plate; the aluminum alloy plate obtained after solid solution treatment is subjected to water quenching; and the aluminum alloy plate obtained after water quenching is subjected to cold rolling twice, and then creep age forming is conducted. According to the method, the non-equal-ratio cross rolling method is adopted, the creep aging anisotropy of the aluminum alloy material can be greatly reduced on the premise that the high creep aging deformation efficiency of the aluminum alloy is kept, the operation method is simple and convenient, the method is suitable for actual production and application, and high-efficiency and high-precision forming and manufacturing of the aluminum alloy component can be achieved.