40results about How to "Guaranteed mechanical performance requirements" patented technology

The invention discloses a manufacturing method of a 3D printing intelligent integrated protective mask and belongs to the field of 3D printing technology and medical protective tools. The intelligentintegrated protective mask has the lens antifog function and the body temperature real-time monitoring function, enables air circulation in the single direction and separates the mouth from the nose.The manufacturing method comprises the following steps: adopting SolidWorks, Magics and other software for designing and optimizing the model of the protective mask main body, adopting finite elementsimulation to verify whether the combination property of the designed model reaches expectation, sectioning the finally optimized model, introducing the sectioned model in SLS or FDM 3D printing equipment, manufacturing the mask main body according to certain printing parameters, through carrying out a series of aftertreatment on the printed entity and combined assembling with an additional deviceon the printed entity, finally obtaining the intelligent integrated protective mask which is excellent in mechanical property, leakproofness, light and comfortable, has the lens antifog function andthe body temperature real-time monitoring function, enables air circulation in the single direction and separates the mouth from the nose.

The invention provides a 900Mpa heavy-gauge and high-toughness hot rolled steel strip and a preparation method thereof, and belongs to the field of structural steel. The steel strip comprises chemicalcomponents in percentage by mass as follows: 0.06%-0.08% of C, 0.15-0.18% of Si, 1.4%-1.6% of Mn, smaller than or equal to 0.012% of P, smaller than or equal to 0.008% of S, 0.8%-1.2% of Cr, 0.005%-0.012% of B, 0.01%-0.03% of Ti and the balance of Fe and inevitable impurities. According to preparation of the steel strip, the product is obtained through smelting-casting, hot rough rolling, hot finish rolling, cooling and coiling. By means of reasonable component design and the controlled rolling and controlled cooling process, yield strength of the steel strip can reach 900 MPa, and the steelstrip is used for replacing a steel plate of the same level obtained with a TMCP and tempering process or a heat treatment process.

The invention discloses an ultra-low carbon bainite thin gauge steel plate rolled through a heavy and medium plate mill. The ultra-low carbon bainite thin gauge steel plate comprises, by weight, 0.02%-0.08% of C, 0.10%-0.40% of Si, 0.90%-2.00% of Mn, 0.018% of P or less, 0.005% of S or less, 0.40% of Cu or less, 0.0003% of B or less, 0.10%-0.55% of Ni, 0.10%-0.40% of Mo, 0.12%-0.60% of Cr, 0.030%-0.090% of V, 0.010%-0.035% of Nb, 0.005%-0.035% of Ti, 0.060% of Als or less and the balanced Fe and inevitable impurities. A production method comprises the steps of smelting, casting, heating, rolling, slitting, intermediate material heating, rough rolling, finish rolling and cooling control. The ultra-low carbon bainite thin gauge steel plate is reasonable in process, good in product performance and small in unevenness and can be widely applied to bridge U rib structures.

The invention provides an extensible platform of a power supply controller. The main structure of each structure module of the extensible platform of the power supply controller is a tetrahedral structure hollowed out as a whole and provided with a front panel, a rear panel, a top panel and a bottom panel, and hollowed-out grids are arranged in each module and include at least two layers of grids. Devices in each structure module are laid out three-dimensionally in the grids, so that internal space of the power supply controller is effectively utilized, and three-dimensional layout in the modules is achieved. A reinforcing frame not only provides an installation space but also connects all the modules as a main force bearing component of the whole controller, so that the strength of connection between the modules and the rigidity and the strength of the whole controller meet the requirements of a satellite mechanical environment. A capacitor (CAP) module is used for containing capacitors, the large number of capacitors are used in cooperation with the other modules to stabilize bus voltage, and thus good extensibility is achieved. Due to the use of installing holes and reverse-penetration holes, it is guaranteed that mechanical property requirements of device connecting pieces in the mechanical analysis and environment test process are met.

The invention discloses a manufacturing technology for a natural aerodynamic cylinder and aims to solve the problems that a conventional cast natural aerodynamic cylinder is low in precision and intensity and has multiple casting defects. The manufacturing technology disclosed by the invention mainly comprises the working procedures of contour and sand core manufacturing, baking, molten iron smelting, vermicularizing treatment and pouring. The natural aerodynamic cylinder manufactured by the manufacturing technology has the characteristics of high contour size precision, high surface smoothness, high intensity and high mechanical property, and the manufacturing technology is particularly suitable for manufacturing of the natural aerodynamic cylinder.

The invention relates to a pneumatic valve actuator. The pneumatic valve actuator comprises an air cylinder assembly, a piston assembly, a drive output assembly, an end cover assembly and a spring return assembly, wherein the air cylinder assembly comprises an air cylinder; the piston assembly comprises two pistons which are symmetrically arranged left and right; the two pistons are oppositely arranged in the horizontal direction; the two pistons are arranged in an inner cavity of a cylinder body main shaft of the air cylinder; the drive output assembly comprises a rotary shaft and an output insert; the output insert is arranged in a central through hole of the rotary shaft in a limiting mode, and rotates along with the rotary shaft; the drive output assembly is arranged in the air cylinder; a rack section part of the rotary shaft is in engaged and power connection with first racks of two pistons of the piston assembly; the end cover assembly comprises two end covers; the two end covers are separately mounted on the air cylinder from left and right ends; the spring return assembly comprises 2n springs; and the two groups of the springs are separately arranged between the end coverat one side inside the air cylinder and the corresponding piston to elastically support the corresponding piston. The actuator can operate for a long time under a high-corrosion special working condition.

The invention relates to the technical field of PC/ABS alloy materials, and discloses a PC/ABS alloy material and an application thereof. The alloy material is obtained by melting and mixing a PC/ABS alloy composition, and the PC/ABS alloy composition contains PC, ABS, a toughening agent, a flame retardant and modified graphene; based on the total weight of the composition, the composition comprises 65-80 wt% of PC, 10-30 wt% of ABS, 1-5 wt% of a flexibilizer, 5-12 wt% of a flame retardant and 0.5-1 wt% of modified graphene. The alloy material has the advantages of higher mechanical properties, environment friendliness, flame retardancy and excellent weather resistance.

The invention discloses a spraying-free material. The spraying-free material comprises the following components in percentage by mass: 80-95% of matrix resin, 0.1-3% of effect toner, 0.1-3% of basic toner, 1-3% of auxiliary master batch and 0-20% of filler; and the spraying-free material has various different color effects and has good toughness. The invention further discloses a manufacturing method of a spraying-free ornament for automotive interiors. According to the manufacturing method, a double-color forming mold is adopted; a movable mold of the double-color forming mold is provided with a first color forming area and a second color forming area. The manufacturing method comprises the following steps that: S1, a material A and a material B are weighed correspondingly, the material Ais the spraying-free material, and the material B is an ornament framework injection molding material; S2, respectively putting the material A and the material B into corresponding gun barrels, closing the mold, and carrying out injection molding on the material A in the first color forming area to form an ornament surface layer; and S3, opening the mold, after rotating the mold to change the position of the mold, closing the mold again, carrying out injection molding on the material B on the second color forming area so as to form an ornament framework. The technological process is simple, and flow marks and weld line defects can be avoided.

The invention relates to a 6101B aluminum alloy casting production process, and belongs to the field of aluminum alloy casting production. The 6101B aluminum alloy casting production process comprisesthe steps of burdening, furnace charging, smelting, stirring, refining, slagging-off, component adjusting, online refining, online degassing, filtering and casting. Through connection of all processsteps in the production process and control over all process parameters, the 6101B aluminum alloy casting production process is optimized, products meet the mechanical property requirement, the product yield is increased, and the corrosion resistance and oxidation resistance of the products are improved.

The invention relates to the field of a cable, and particularly to a coaxial cable for a nuclear power station. The cable comprises a conductor. A first insulating layer, a second insulating layer, a first woven shielding layer, a first inner sheath, a second woven shielding layer, a second inner sheath, a metal corrugated pipe and an outer sheath successively wrap the external surface of the conductor. The first insulating layer is made of a thin-wall extruded poly-ether-ether-ketone modified cable insulating material. The second insulating layer is made of radiating crosslinked polyolefin. The thickness ratio between the first insulating layer and the second insulating layer is 1:3-20. The coaxial cable satisfies a requirement for signal transmission among a reactor workshop neutron detector and a junction box and a through member and among an auxiliary workshop through member and a pre-amplifier and a signal processing cabinet in a Chinese third-generation nuclear power plant instrument system. Furthermore the coaxial cable satisfies a requirement for executing a safe function in a designed reference accident environment condition of the third-generation nuclear power plant.

The invention provides a PC/PMMA (polycarbonate/polymethyl methacrylate) alloy material with weather resistance and heat insulation performance. The PC/PMMA alloy material comprises the following components: 60-80% of polycarbonate; 10% to 20% of polymethyl methacrylate; 1%-5% of a composite toughening agent; 0.5%-4% of a compound compatilizer; 0.1%-0.5% of a chain extender; 1%-6% of a coupling agent; 0.1%-0.3% of an antioxidant; 0.5%-12% of nano ATO (antimony tin oxide); 5%-20% of a heat-conducting filler; 0.05%-0.3% of a lubricant; and 0.2%-1% of an ultraviolet light absorber. According to the invention, PC, PMMA and a plurality of compound modification auxiliary agents are subjected to melt mixing through a high-volume and high-torque co-rotating twin-screw extruder to prepare the PC/PMMA alloy material suitable for high-end application fields of buildings, automobile industry, electronic and electrical appliances and the like. The material has good mechanical properties, weather resistance and heat insulation performance, has good light transmittance, and can realize green, safe, energy-saving and consumption-reducing functions in a plurality of application fields.