11results about How to "Control roughness" patented technology

The invention discloses a radar-sound compatible absorption superstructure and a preparation method thereof, and belongs to the technical field of sound absorption and wave-absorbing materials, the superstructure is formed by a wave-absorbing material through fused deposition 3D printing, and has three-dimensional gradient components and a hierarchical pore structure, the hierarchical pore structure comprises a microscopic pore structure and a macroscopic pore structure, the macroscopic hole structure is a space folding inclined hole; microscopic holes and macroscopic holes are formed in the superstructure at the same time, resonance absorption peaks are formed at different frequencies through the composite effect of the micro / macroscopic holes, the problem that a traditional radar-sound wave compatible absorption material is too large in thickness / size is solved, it can be guaranteed that incident electromagnetic waves in different directions can make full contact with an absorber, all-directional multi-stage reflection is achieved, and the absorption efficiency is improved. Moreover, the folded multi-stage inclined holes can prolong the propagation path of sound waves and radar waves under the condition that the thickness of the structural member is not increased, multiple reflections are formed in the folded channel, and therefore rapid wave dissipation is caused in the channel.

A charging roll includes a core, a rubber substrate arranged around the core, and a surface layer arranged around the rubber substrate. The surface layer includes a conductive matrix containing a base material formed of an insulator, and a conductive material dispersed in the base material, and particles of a surface roughness-imparting material dispersed in the conductive matrix. Each of the particles of the surface roughness-imparting material is formed of an insulator, is porous, and has a specific surface area of 8.7 m2 / g or greater and 55m2 / g or less.

The utility model discloses a kind of vertical perfusion formworks of arc component, belong to concrete pouring mould technical field, including arc inner mould, arc outer mould, end mould, arc bottom die, travelling mechanism and positioning mechanism;The arc inner mould, arc outer mould, arc bottom die and end mould are matched into mould and are poured;The end mould can be rotatably connected in arc outer mould both sides;The arc bottom die is fixedly connected in arc outer mould bottom;The travelling mechanism is used to drive arc inner mould and arc outer mould into mould and stripping;The positioning mechanism is used for accurate positioning when arc inner mould and arc outer mould into mould.The utility model of a kind of vertical perfusion formworks of arc component, can effectively solve the pouring mould platform of prior art is flat mould production, and the component poured out by it is not good control because of the large area of upper surface, lack of vertical perfusion formwork suitable for arc segment and other problems.

The invention provides a preparation method of a coating with high adhesive force. The preparation method comprises the following steps: providing a spare part base material and coating powder; roughness treatment is conducted on the spare part base material, and the treated spare part base material is obtained; and coating powder is used for conducting spraying operation on the treated spare part base metal, and the coating is obtained. According to the preparation method of the coating with high adhesive force, the adhesive force of the coating on the surface of the spare part can be improved and the service life of the coating is prolonged on the premise of controlling the roughness of the surface of the spare part and remarkably reducing the loss of base metal of the spare part, so that the overall service life of the spare part is prolonged.

The present application provides an intelligent control method and device for laser etching for chip processing, which relates to the field of laser etching technology, including: obtaining the laser control parameter space for chip laser etching processing, randomly generating laser control parameters; generating integrated simulated laser etching microgroove images for chip substrates, and identifying and obtaining multiple microgroove bottom roughnesses; performing individual microgroove electrical performance impact analysis, performing continuous microgroove electrical performance impact analysis, and obtaining continuous electrical performance impact parameters; calculating and obtaining the etching score of the laser control parameters, optimizing the laser control parameters, obtaining the optimal laser etching parameters, and controlling the chip laser etching processing. This application can solve the technical problem that the roughness of microgrooves cannot be accurately controlled during the etching process in the prior art, achieve the technical goal of accurately analyzing and optimizing the relationship between laser etching parameters and microgroove electrical performance, and achieve the technical effect of effectively controlling the roughness of the bottom of the microgroove.

The invention discloses an extreme ultraviolet reflective film system based on a high-refractive-index composite film. The extreme ultraviolet reflective film system comprises a substrate, a periodic structure and a protective film layer, the substrate is provided with a periodic structure which is formed by repeatedly forming a film layer stacking unit for multiple times, and the periodic structure is provided with a protective film layer; the film layer stacking unit comprises a low-refractive-index layer, a first Si spacing layer, a Si-based high-refractive-index composite layer and a second Si spacing layer which are arranged in sequence; in the Si-based high-refractive-index composite layer, the microporous structures are uniformly distributed in the Si phase in the form of independent nano units, and the range of the volume ratio of micropores is 10%-60%, so that the refractive index of the high-refractive-index layer in the periodic film layer is effectively improved, the extinction coefficient of the high-refractive-index layer is reduced, and a high refractive index difference value between an upper interface and a lower interface is ensured; therefore, the extreme ultraviolet film system provided by the invention has excellent extreme ultraviolet reflection capability. The invention further discloses a preparation method of the extreme ultraviolet reflection film system based on the high-refractive-index composite film, and the preparation method is simple, easy to control, low in cost and suitable for large-area preparation.

The present application belongs to the field of heat treatment technology of plastic mold steel, and the present application discloses a plastic mold steel and a heat treatment process. The heat treatment process of the plastic mold steel in the present application includes the steps of melting and pouring raw materials into steel ingots, performing high temperature diffusion heat treatment on the steel ingots in sequence, hot rolling, annealing, isothermal quenching and air cooling, oil cooling and quenching, and tempering. The present application optimizes the component design and is equipped with an effective heat treatment process, while maintaining the cavity accuracy, finish and roughness, significantly improving the hardness and polishing performance of the mold and extending the service life of the mold.

The image sensor chip packaging structure comprises a tube shell, a core cavity is formed in an opening in the upper end of the tube shell, a chip is arranged at the groove bottom of the core cavity, the chip is an image sensor, the chip is connected to the tube shell through a plurality of bonding wires, a plurality of pins are arranged at the lower end of the tube shell, and a glass cover plate is arranged at the core cavity of the tube shell. And the glass cover plate is adhered to the core cavity of the tube shell through the sealing rubber ring. And the chip is adhered to the bottom of the core cavity through insulating glue. The packaging method is used for packaging the packaging structure of the image sensor chip for space navigation. According to the packaging structure, the high-temperature co-fired ceramic substrate formed by sintering and pressing multiple layers of ceramic is adopted, so that a multi-layer circuit structure can be conveniently formed for a high-integration chip; the flatness, parallelism and roughness of the surface of the packaging substrate can be better controlled, and the chip mounting precision can meet the application requirement. The high-temperature co-fired ceramic is stable in structure and high in heat conductivity, heat dissipation of the chip is facilitated, and the requirement for high reliability of aerospace application can be met.

The utility model discloses a visual test device for simulating seepage behaviors of jointed loess. The visual test device comprises a water inlet unit, a water permeable unit and a water seepage unit which are sequentially connected from bottom to top, the water inlet unit comprises a water inlet pressure chamber, the water seepage unit comprises a semi-cylindrical side plate, a rectangular side plate and a top plate, the semi-cylindrical side plate and the rectangular side plate are fixedly connected to form a semi-cylinder, the top plate is fixedly connected to the top end of the semi-cylinder, and the water seepage unit is arranged between the water inlet pressure chamber and the semi-cylinder. The rectangular side plate is made of organic glass, and a high-definition digital camera is installed on one side of the rectangular side plate. The device is simple and easy to manufacture, the erosion of the joint-containing loess under the condition of water flow seepage can be simulated through simple operation, the workload and the test cost are reduced, the evolution process of the joint form along with seepage can be visually observed, and a new thought is provided for indoor joint-containing loess seepage test simulation.

The present invention discloses a stainless steel plate laser cutting device and a method for using the same, and relates to the field of laser cutting technology, including the following steps: S1, placing the stainless steel plate on a workbench for calibration and positioning, inputting the stainless steel plate parameters and the expected number of cutting rounds, and setting the cutting depth of each round; S2, setting the cutting angle and the first cutting distance of the upper laser head and the lower laser head, and controlling the upper and lower laser heads to perform multiple cuttings; S3, resetting the cutting angle and the single cutting distance of the upper laser head and the lower laser head, and performing multiple cuttings with the end of the first cutting path in S1 as the starting point; S4, looping through steps S2 to S3 for N rounds before rolling up the stainless steel plate. The present invention ensures the accuracy of cutting through calibration and positioning, and improves the consistency and precision of cutting; and adopts a multi-group cutting design with opposite cutting angles, which increases the flexibility of cutting and improves the cutting efficiency.

The present application belongs to the field of batteries. The present application provides a kind of pole piece for improving surface flatness, its preparation method and battery, the preparation method includes that the coating layer of pole piece has formed is carried out re-coating, the mode of re-coating is gravure coating, control the particle size of substance in slurry used in re-coating is less than the particle size of substance in the coating layer that has formed, then carries out isostatic pressing treatment, forms re-coating layer.The specific re-coating layer formed by isostatic pressing treatment of the present application can prevent the generation of internal and surface defects of pole piece caused by roll pressing, improve the surface roughness and thickness uniformity of pole piece, effectively improve the surface flatness of pole piece and reduce interface impedance, optimize the solid-solid contact state and effect of electrode active material and solid electrolyte in pole piece, and further improve the cycle stability of battery.