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733results about How to "Change performance" patented technology

Continuous casting slab high-temperature oxidation resistant coatings and preparation process thereof

InactiveCN101693791AGood anti-oxidation effect at high temperatureRaw materials are easy to getCoatingsOxidation resistantSuspending Agents
The invention relates to a preparation process of continuous casting slab high-temperature oxidation resistant coatings, which is characterized in that less than 120 meshes of powder, reductant containing carbon, inorganic binders, surfactants, suspending agents and the like with the compositions such as 25-55 wt% SiO2, 10-20 wt% Al203, 11-23 wt% MgO and the like are respectively grinded and mixed evenly, then water is used to be mixed and stirred sufficiently evenly, and finally the density of the coatings are adjusted within 1200-1500 kg/m3. The coatings can not only be sprayed onto continuous casting slabs at normal temperature, but also be sprayed onto high-temperature casting slabs, form continuous whole protective coating layers under the action of high temperature, effectively reduce temperature drop of the casting slabs and oxidation burning loss in even heating process of a heating furnace without changing original performance of matrixes, and effectively decrease dilution of alloying elements on the surfaces of the casting slabs. After the casting slabs are out of the heating furnace, natural spalling capability of the coating layers is strong, and oxidation matrixes of the casting slabs are smooth. Raw materials of the oxidation resistant coatings are easy to be obtained, and the coatings have low cost and simple preparation process and are adaptable to oxidation resistance for various steels when being heated at 700-1300 DEG C/ 2-8 hours.
Owner:UNIV OF SCI & TECH BEIJING

Intelligent decision simulating experimental system based on multi-Agent technology

The invention relates to an intelligent decision simulating experimental system based on multi-Agent technology, belonging to the crossed field of computer simulation, artificial intelligence and management experiment, and being the breakthrough and the development of a management experimental methodology and an intelligent decision support system on the concept, the theory, the technology and the function. The system is a large-scale experimental platform for carrying out simulation assisted prediction and decision on discrete events in management activities of the real world. In the method, an isomerized Agent and the group collaboration thereof are creatively used as leading roles of transparent processing of a decision experiment and a system simulation, four functional sub-systems, four layers of Agent system structures and four types of local databases are established, and predictions and decisions of four simulating experimental methods are applied to unify a system module. The invention is based on an internet, synthetically uses several new technologies of cloud computing and the artificial intelligence, increases functions of games of strategy, machine planning, knowledge discovery and logic self-building, and has super experimental capability. The invention is a new way for developing the management experimental technology and the intelligent decision support system.
Owner:谢瑞

Antenna device and mobile terminal

The invention provides an antenna device. The antenna device comprises a radio frequency transceiving circuit, a matching circuit and a metal shell, wherein the matching circuit is electrically connected to the radio frequency transceiving circuit, the edge of the metal shell comprises an arc segment, the metal shell is provided with at least one micro-slot belt, the at least one micro-slot belt comprises an arc part, the arc part is matched with the arc segment of the metal shell, the radio frequency transceiving circuit is electrically connected with the metal shell through the matching circuit so that the metal shell is used as a radiation body of the antenna device, the metal shell is grounded by a grounding line, and a switch is arranged on the grounding line and is used for controlling on / off of the grounding line. With the antenna device according to the invention, the comprehensive appearance effect of a mobile terminal can be ensured, meanwhile, a signal of the antenna device can be prevented from being intervened, and the bandwidth of the antenna device is improved. The invention also provides the mobile terminal.
Owner:GUANGDONG OPPO MOBILE TELECOMM CORP LTD

Ultra-strong strength, high-toughness and anticorrosive aluminum alloy and preparation method for same

The invention relates to an ultra-strong strength, high-toughness and anticorrosive aluminum alloy and a preparation method for the same. A trace amount of specially-reinforced rare earth elements Sm, Nd and Y are added on the basis of an Al-Zn-Mg-Cu-Zr alloy, an electromagnetic casting mode is adopted for improving the solid solubility of the alloy, homogenizing the structure and reducing segregation, and the proportion of main alloy elements is optimized to make a breakthrough in the strength of the alloy. The aluminum alloy has ultra-strong strength, higher plasticity and high anticorrosive performance; in addition, the high-abundance rare earth element such as Sm and Y serving as one of raw materials is excessively overstocked in the market, and is low in cost, so that not only can be the cost of the alloy remarkably lowered, but also the problem of application unbalance of the rare earth elements can be relieved; the strength of a material prepared from the alloy is stronger than 700MPa after the material is subjected to T77 treatment, and is remarkably stronger than that of a material prepared from a 7055 alloy, and the comprehensive performance of the material is remarkably higher than that of a material prepared from an Al-Zn-Cu-Mg aluminum alloy currently with the highest comprehensive performance.
Owner:华峰铝业有限公司

Small ultrawide band antenna with trapped wave characteristic

The invention discloses a small ultrawide band antenna with a trapped wave characteristic. The small ultrawide band antenna consists of a dielectric substrate (1) and metal coating layers positioned on the upper surface and the lower surface of the dielectric substrate (1), wherein a radiation unit (2), a microstrip feeder (4) and interdigital capacitance loading resonance rings (6) and (7) are arranged on the upper surface of the dielectric substrate; the microstrip feeder (4) consists of a microstrip line with characteristic impedance of 50 ohms and a microstrip line with characteristic impedance which is gradually changed linearly from 50 ohms; the two interdigital capacitance loading resonance rings (6) and (7) with different sizes are printed on two sides of the microstrip feeder and used for forming a trapped wave frequency band; and a metal floor consists of a rectangle (3) and a reversed L shape (5) and is printed on the lower surface of the dielectric substrate (1). The working frequency band of the antenna covers 3.1 to 10.6 GHz; interference signals of a plurality of narrowstrip frequency bands can be filtered as required by adjusting relevant parameters, and available frequency bands are retained; and the antenna has the advantages of wide frequency band, narrow attenuation band, miniaturization and strong anti-interference capacity.
Owner:杭州平治信息技术股份有限公司

Soft-magnetic composite material and process for making magnetic conduction component by using same

This invention relates to soft magnetic compound materials, which are characterized by the following: the said materials comprise iron material, isolation agent and lubrication agent with their weight percentage as 92-99 úÑ, 0.5-5 úÑ , 0.5-3 úÑ; the said iron material is powder material, which comprise deoxidized powder, atomized iron powder, hydroxide powder and iron alloy with iron of 80-99.8úÑ; Particle distribution of 20-500; the said isolation agent adopts nanometer calcium carbonate powder or ceramics powder or magnetic oxidation power; the said lubrication is micro powder. The process comprises the following steps: mixing, shaping, solidifying and stainless processing.
Owner:罗计添 +2

Tunable wave length selection/locking light dense wave division complex combining wave/channel splitting filter

The invention is a tunable wavelength selecting / locking optical dense wave division multiplex wave combining / separating device, including an input port and eight wave separation output ports, two wavelength tuning selection combining components, and the wavelength locking control structure includes optical-fiber coupler, optical FP etalon, fast wavelength tuning filter, two fast photoelectric conversion probes, and differential amplifier tracking signal processor. The wavelength locking control structure collects and processes two optical signals of a primary optical path and controls the wavelength tuning selection combining components in the primary optical path by circuit feedback. The wavelength tuning selection combining components are packaged with many optical resonance cavities in parallel on an optical shared surface, adopt the electrooptical effect of electrooptical polymer film and the multi-reflection coherence theory of optical resonance cavities to form tuned filtering characteristic, making the output of each wave separation port of the multiplexer meet the design requirements on wavelength selection and wideband tuning, and it makes locking control on the central wavelength of each channel, stable and reliable.
Owner:SHANGHAI JIAO TONG UNIV

Double-wall structured hollow ultrafine polymer fiber and preparation method thereof

The invention discloses a double-wall structured hollow ultrafine polymer fiber and a preparation method thereof. The preparation method includes a first step of enabling 100-300 parts of polymers A and 300-1000 parts of solvent A to be added in a dissolving kettle provided with a stirrer and a thermometer, stirring and dissolving the polymers A and the solvent A under temperature of 30-100 DEG C, carrying out defoaming and curing for 10-12 hours at vacuum degree of 0.03-0.05 MPa, and obtaining polymer shell layer spinning solution, a second step of enabling 0.5-100 parts of polymers B and 10-1000 parts of solvent B to be added into the dissolving kettle provided with the stirrer and the thermometer, stirring and dissolving the polymers B and the solvent B under temperature of 30-100 DEG C, carrying out defoaming and curing for 10-12 hours at vacuum degree of 0.03-0.05 MPa, and obtaining polymer core layer spinning solution, a third step of enabling the polymer shell layer spinning solution and the polymer core layer spinning solution to pass through a core layer spinning nozzle and a shell layer spinning nozzle, wherein the inner diameter of the core layer spinning nozzle is 0.3-0.6 mm, and flow rate is 1-8 mm/h, the inner diameter of the shell layer spinning nozzle is 0.8-1.2 mm, and the flow rate is 5-10 mm/h, spinning voltage is 15-25 kilovolts, and finally manufacturing the double-wall structured hollow ultrafine polymer fiber through electrostatic spinning. The polymers A can form the outer layer of a hollow polymer fiber wall, and the polymers B can form the inner layer of the hollow polymer fiber wall.
Owner:SICHUAN UNIV

Method for preparing aluminum-copper alloy microarc oxidation film

The invention relates to the field of aluminum-copper alloy surface treatment and aims to provide a method for preparing an aluminum-copper alloy microarc oxidation film, which solves the problem on the application of microarc oxidation in the production of aluminum-copper alloy. The preparation method is characterized in that a special electrolyte composite is adopted to prepare the microarc oxidation film, and the property of a generated film can be effectively changed by controlling the proportion among technological parameters, such as electrical parameters, electrolyte composite systems, processing time and the like. The preparation method has the advantages that the electrolyte composite has abundant sources, and is environmentally-friendly and easy for proportioning; and the technological process for preparing the film is simple and is easy to operate and control, and the prepared film has excellent corrosion resistance.
Owner:SHANGHAI SPACE PRECISION MACHINERY RES INST
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