101results about How to "Meet the needs of lightweight" patented technology

The invention relates to a beacon optical axis precision positioning system in an atmosphere laser communication system, which is characterized by comprising an optical receiving antenna (1), a vibrating mirror (2), a dispersion prism (3), a Hartmann sensor optical axis precision positioning unit (4), a vibrating mirror controller (5), a lens (6) and a common CCD camera (7). To realize the real-time correction of the pointing direction of a beacon optical axis, the beacon optical axis precision positioning system detects a beacon light beam by a Schack Hartmann sensor with microlenses array and reconstructs a real-time wavefront image by a Zernike Polynomial mode method, thereby resolving the real pointing direction of the beacon optical axis of the atmosphere laser communication system and achieving final optical axis positioning precision exceeding 2 mu rad. If a common CCD positioned at a receiving end needs to obtain same resolution ratio and measuring precision, an optical systemof the common CCD has large volume and heavier weight; in addition, compared with the traditional platform, the invention has obviously reduced volume and weight, thereby effectively meeting the requirement of future space laser communication for the light type of an onboard platform.

The invention discloses a silicon-aluminum-alloy-case-based three-dimensional assembling and packaging structure of a microwave module. The assembling and packaging structure comprises a split type case body and one or more functional units. The case body includes an inner cavity type shell and one and more flat type cover plates; the shell includes one or more inner cavities. In packaging, the inner cavity is in sealed connection by the cover plate; the function units are assembled to the bottom of the inner cavity and the inner side of the cover plate; and the case body is formed by stackingof at least three different silicon-aluminum alloy material with different components. The assembling and packaging structure has the following beneficial effects: three-dimensional assembling and packaging inside the microwave module are realized; compared with the traditional microwave module only assembling components at the bottom of the inner cavity of the shell, the assembling and packagingstructure enables the integration rate to be improved by two for four times; and with the silicon aluminum alloy, the size and the mass are reduced, the thermal stress reliability is improved, and the heat dissipation performance is enhanced.

The invention discloses 1000 MPa-grade hot-rolled automotive frame steel and a producing method thereof. The raw materials of the steel comprise the chemical components including, by mass, 0,10-0.20%of C, not greater than 0.10% of Si, 1.5-1.7% of Mn, not greater than 0.005% of S, not greater than 0.015% of P, 0.045-0.055% of Nb, 0.08-0.10% of Ti, not greater than 40 ppm of N, 0.025-0.060% of Als,not greater than 0.002% of H and the balance Fe. According to a hot-rolled steel plate produced through the method, the yield strength is greater than or equal to 750 MPa, the tensile strength is greater than or equal to 1000 MPa, the elongation is greater than or equal to 10%, and cold bend positions are free of cracks and a good cold bend effect is achieved under the conditions that the wide cold bend is 180 degrees and the cold bend flexual center diameter D is equal to 4t (thickness). The technological flow adopted by the method is simple, no equipment needs to be additionally arranged, and the steel has the advantages of being capable of being produced on a large scale, economical, feasible and stable in performance.

The invention discloses a thin weathering steel with tensile strength of not less than 800 MPa produced by a short process. The thin weathering steel is prepared from the following components in percentage by weight: 0.04 to 0.09 percent of C, 0.20 to 0.40 percent of Si, 1.45 to 1.75 percent of Mn, 0.05 to 0.30 percent of Cu, 0.35 to 0.50 percent of Cr, 0.02 to 0.05 percent of V, 0.11 to 0.14 percent of Ti, 0.010 to 0.050 percent of Als, not more than 0.020 percent of P, not more than 0.006 percent of S, and not more than 0.006 percent of N. A production method comprises: performing continuouscasting into a thin slab after conventional smelting; soaking the thin slab; performing scale removal for two times; performing finishing rolling for seven times; performing laminar cooling to a coiling temperature; coiling; leveling. According to the invention, the full-length thickness of strip steel is uniform, the plate shape and the roll shape are excellent, the rolling process is stable, the finished product rate of an original variety is increased to 92 percent or more, the purpose of replacing a cold-rolled product in batches is achieved, and the demand for the light weight of a container is met.

The invention provides a roof and an air conditioner installation seat of a railway vehicle. Sunken installation of an air conditioner can be achieved, the influences on a roof streamline structure are reduced, air resistance and aerodynamic noise are lowered, and the aerodynamic performance of a train is improved. The air conditioner installation seat is arranged on the roof of the railway vehicle and is of a square frame structure, a middle cavity of the square frame structure is used for containing the air conditioner, the four sides of the square frame structure are edge beams made of hollow sectional materials, the inner sides of the edge beams are provided with air conditioner installation positions, the outer sides of the edge beams can be welded to the hollow sectional materials of the roof in an inserted mode, and the top faces of the side beams are each of an arc shape matched with the roof. The middle cavity of the square frame structure is used for containing the air conditioner, the whole air conditioner is conveniently arranged on the roof and cannot protrude out of the roof, sunken installation of the air conditioner is achieved, the influences of air conditioner installation on the roof streamline structure are effectively reduced, air resistance and aerodynamic noise are lowered, and the aerodynamic performance of the train is improved.

The invention discloses a 600MPa-grade thin hot-rolled automobile structural steel produced by a short process. The steel is prepared from the following components in percentage by weight: 0.045 to 0.075 percent of C, not more than 0.20 percent of Si, 1.00 to 1.25 percent of Mn, 0.11 to 0.14 percent of Ti, not more than 0.015 percent of Nb, not more than 0.015 percent of V, 0.015 to 0.050 percentof Als, not more than 0.018 percent of P, not more than 0.005 percent of S, and not more than 0.006 percent of N. A production method comprises: performing continuous casting into a thin slab after conventional smelting; soaking the thin slab; performing scale removal for two times; performing finishing rolling for seven times; performing laminar cooling to a coiling temperature; coiling; leveling. According to the invention, the shortcomings of poor plate shape and roll shape, unstable rolling process and the like in the process of rolling the 600MPa-grade thin hot-rolled automobile structural steel by a short process are solved, the high-stability and large-scale production of the 600MPa-grade thin hot-rolled automobile structural steel produced by the short process is realized, the plate shape and the roll shape are excellent, the rolling process is stable, the finished product rate of an original variety is increased to 93 percent or more, and the purpose of replacing a cold-rolledproduct is achieved.

The invention provides a polyamide polycarbonate alloy material and a preparation method and applications thereof. The polyamide polycarbonate alloy material comprises the following components in parts by weight: 5 to 90 parts of polyamide, 10 to 95 parts of polycarbonate, 1 to 15 parts of toughening agent, 1.75 to 17.5 parts of compatilizer, 15 to 55 parts of semi-aromatic polyamide fibers, and 0.2 to 2.6 parts of auxiliary agent. The preparation method comprises the following steps: evenly mixing polyamide, polycarbonate, a toughening agent, a compatibilizer, and an auxiliary agent, adding the mixture into the main feed hopper of a double-screw extruder; adding the semi-aromatic polyamide fibers into the lateral feed hopper of the double-screw extruder, and carrying out extruding, pulling, and cutting to obtain the polyamide polycarbonate alloy material. The provided polyamide polycarbonate alloy material has the advantages of good interfacial compatibility, good particle dispersing property, and high strength, can be used to prepare parts of electronic and electrical products, and has a wide application range.

The invention provides a visible light-medium wave infrared dual-band common aperture optical system, which solves the problems that a conventional dual-band imaging system is large in overall size and heavy in weight. The system comprises a main reflector, a light splitting element, a visible light subsystem and a medium wave infrared subsystem, the target light is reflected to the light splitting element through the main reflector, and the light splitting element is used for splitting the light into two paths which respectively enter the visible light subsystem and the medium wave infrared subsystem. The visible light subsystem comprises a first folding axis reflector, a second folding axis reflector, a primary image correction lens group, a collimating lens group and an objective lens group which are sequentially arranged along a light path; and the medium wave infrared subsystem comprises a medium wave infrared correction lens group, a fourth folding axis reflector and a projectionlens group which are sequentially arranged along a light path. The visible light subsystem and the medium wave infrared subsystem are divided into two paths in a mode of sharing the light splitting of the primary reflector and the secondary reflector, the visible light subsystem and the medium wave infrared subsystem are independently and synchronously imaged respectively, and the dual-band lenshas high imaging quality and completely meets the requirements of a system for target detection and imaging.

The invention discloses hot-dip galvanized 420MPa-grade low-alloy high-strength steel for an automobile and a production method thereof. The hot-dip galvanized 420MPa-grade low-alloy high-strength steel for the automobile comprises the following chemical components in percentage by mass: 0.06-0.08% of C, less than or equal to 0.04% of Si, 1.15-1.25% of Mn, less than or equal to 0.018% of P, less than or equal to 0.005% of S, 0.020-0.050% of Alt, 0.040-0.055% of Nb, 0.020-0.030% of Ti, 0.0010-0.0030% of Ca and the balance Fe and inevitable impurities. The high-strength steel meets the conditions that the yield strength is greater than or equal to 449MPa and less than or equal to 520MPa and the yield ratio is greater than or equal to 0.90, has relatively high strength and yield ratio and can meet the requirements of the automobile industry on weight reduction, safety, energy conservation, environmental friendliness, corrosion resistance and the like.

The invention relates to the technical field of aluminum alloy machining, in particular to an aluminum alloy material for an electric car power battery tray and a preparation method thereof. The aluminum alloy material comprises, by mass, 1.00-1.18% of Mg, 0.82-1.00% of Si, 0.88-1.02% of Cu, 0.64-0.82% of Mn, 0.05-0.25% of Zr, less than or equal to 0.3% of Fe, less than or equal to 0.15% of othertotal impurities, and the balance Al. The aluminum alloy material provided by the invention is uniform in texture and fine in grain, has high strength, tensile strength, impact toughness, stress corrosion cracking resistance, weldability and other performance, the tensile strength is greater than 350 MPa, the exfoliation corrosion performance is not less than the grade EA, and the strength coefficient of a friction stirring welding head is greater than 85%. The aluminum alloy material is applied to the car power battery tray and can meet the requirements for light weight of cars.

The invention provides a supporting assembly, a manufacturing method thereof and a display device. The supporting assembly comprises a carbon fiber layer, the carbon fiber layer comprises at least one carbon fiber woven layer, and the carbon fiber woven layer comprises a carbon fiber woven base layer and resin materials distributed in gaps and on the surface of the carbon fiber woven base layer, the carbon fiber woven base layer in each carbon fiber woven layer is formed by weaving at least two fibers in different directions; the first high polymer material layer is arranged on one side of the carbon fiber layer. Therefore, after the material formed by weaving the fibers in the at least two different directions is infiltrated by the resin, the strength is high, and the requirement of the supporting assembly on the strength can be met; the carbon fiber layer has good bending performance, and the bending reliability is higher.

The invention discloses a dual-face surface foaming car interior trim part. The part comprises an upper surface, a foaming layer, an insert and a lower surface. The foaming layer is a glass fiber reinforced polyurethane foaming layer, the insert is the insert embedded in the foaming layer during forming, the upper surface and the lower surface completely wrap the foaming layer and the insert, andthrough one-time forming of the glass fiber reinforced polyurethane, the integrated car interior trim part is subjected to composite molding. According to the dual-face surface foaming car interior trim part, one-time foaming molding is achieved, the aim is easily achieved, the forming efficiency is high, the cost is low, and the combination strength is high. According to the dual-face surface foaming car interior trim part, the raw material cost of the one-time molded product is small, and the weight is small. The invention further discloses a forming process of the dual-face surface foamingcar interior trim part. The product is attractive in appearance, small in weight, and capable of reducing product weight, and meeting the car lightweight needs, meanwhile, the labor efficiency is improved in a multiplied manner, and the cost is reduced.

The invention relates to the field of vehicle illuminating lamp heat dissipation, in particular to an LED vehicle lamp module heat dissipation control method and device. According to the LED vehicle lamp module heat dissipation control method, the standard work temperature TL, the standard work current IL and the limit working temperature Tmax of an LED vehicle lamp module, and the limit rotation speed rmax of a heat dissipation fan are set, and the heat dissipation fan is controlled according to the temperature Tj in the LED vehicle lamp module; when Tj is smaller than or equal to TL, the heat dissipation fan does not work; when Tj is larger than TL and r is smaller than rmax, a controller controls the heat dissipation fan to be started, r is equal to f(Tj), and Ij is equal to IL; when Tj is larger than TL and r is equal to rmax, the controller controls the current Ij of the LED vehicle lamp module to be lowered gradually till r is smaller than rmax; and when Tj is equal to Tmax, Ij is lowered to 0. According to the LED vehicle lamp module heat dissipation control method and device, the temperature is controlled to below the limit temperature through the controllable heat dissipation fan, the requirement for a heat dissipation assembly is lowered, the size can be reduced, and the lightweight need is also met. Meanwhile, on the premise that the heat dissipation ability can be met, LED luminous flux output is further increased, illuminance is improved, and driving safety is ensured.

The invention relates to a powder metallurgy aluminum alloy chain wheel or gear and a preparation method, and the powder metallurgy aluminum alloy chain wheel or gear is characterized by comprising the following chemical components in percentage by mass: 0.1%-7% of Cu, 0.1%-5% of Mg, 0.1%-40% of Si, 0%-10% of Zn, 0%-1% of Sn, 0%-10% of a reinforcement phase and the balance of Al. The preparation method is simple, machining is convenient, the prepared powder metallurgy aluminum alloy chain wheel or gear is light in weight, meanwhile, the advantages of light weight, corrosion resistance and high hardness are achieved, the requirement for light weight of an automobile is met, and energy conservation and emission reduction are facilitated.

The invention discloses 500 MPa class thin-specification hot-rolled automobile structural steel produced by using a short process. The components of the 500 MPa class thin-specification hot-rolled automobile structural steel are as follows by weight percentage, 0.040-0.070% of C, no more than 0.20% of Si, 1.0-1.25% of Mn, 0.025-0.045% of Ti, 0.025-0.055% of Nb, no more than 0.015% of V, 0.020-0.060% of Als, no more than 0.020% of P, no more than 0.008% of S, no more than 0.006% of N. A production method comprises the steps that a thin slab billet is casted continuously after conventional smelting, uniform heating is conducted on the thin slab billet, twice descaling is conducted, and seven times finishing rolling is conducted; and the laminar flow is cooled to the coiling temperature, coiling is conducted, and leveling is conducted. According to the500 MPa class thin-specification hot-rolled automobile structural steel and the method, the shortcomings that the plate shape and coil shape are bad, and the rolling process is unstable in the rolling process of 500 MPa class thin-specification hot-rolled automobile structural steel using a short process are overcome, the high-stabilityand large-scale production of the 500 MPa class thin-specification hot-rolled automobile structural steel rolled by using a short process is achieved, the plate shape and the roll shape are excellent,the rolling process is stable, the original variety yield is increased to more than 90%, and the purpose of replacing cold rolling products is achieved.