26results about How to "High surface flatness" patented technology

The utility model discloses a bar surface smoothness polishing mould frame, which relates to the technical field of bar processing, and comprises a fixed base, the rear side of the upper end of the fixed base is fixedly connected with an inner side fixed frame, the upper ends of the two sides of the inner side fixed frame are fixedly connected with turnover frames, a turnover driving shaft is rotatably arranged between the turnover frames on the two sides, and the turnover driving shaft is fixedly connected with the inner side fixed frame. An indexing driver is fixedly installed on the outer side of the overturning frame on one side, an output shaft of the indexing driver penetrates through the overturning frames and then is fixedly connected with an overturning driving shaft, and bars are continuously fed into the bar clamping notches in the upper side through conveying equipment and then overturned. After being ground, the workpiece directly falls into the roll-out roller set on the lower side to be conveyed to corresponding conveying equipment to be conveyed out, continuous polishing machining can be carried out, the structure is simple, design is reasonable, operation is convenient and fast, the problem that lathe resources are occupied for a long time in a traditional polishing method can be effectively solved, normal use of other equipment is not affected, and the production efficiency is greatly improved.

This disclosure provides a polishing pad and a final polishing apparatus. The polishing pad includes: a substrate; and a deformable unit disposed on the substrate. The deformable unit is capable of switching the polishing pad between a first shape mode and a second shape mode by deformation. In the first shape mode, the polishing surface of the polishing pad has grooves, and in the second shape mode, the polishing surface of the polishing pad is flat.

The utility model provides a kind of magnetic core assembly and electronic equipment, it is related to magnetic sensing technical field.The magnetic core assembly includes package and multiple magnetic cores, and gap is provided between adjacent two magnetic cores;Package is covered in the periphery of at least part magnetic core and is filled in gap;Wherein, magnetic core and package are integrally formed structure.Multiple magnetic cores and package can be equivalent to one module component, realize quick assembly, improve assembly efficiency.Package is filled in the gap between adjacent two magnetic cores, so that the side surface of magnetic core can be closely attached to package, while ensuring the connection strength, reduce thermal resistance, improve heat dissipation capacity, and also improve the surface flatness of magnetic core assembly overall to some extent. When package and magnetic core are formed into complete module component by being covered in the periphery of at least part magnetic core, the deformation generated during installation can be reduced, high-precision size control is realized, and the overall strength and assembly accuracy of magnetic core assembly are improved.

The utility model discloses an annealing device which is characterized in that an annealing furnace is arranged on a frame, a plurality of passing rollers, a tension roller and a floating assembly are arranged on the incoming material side of the annealing furnace, a flattening roller and a traction assembly are arranged on the discharging side of the annealing furnace, and a heating module is arranged in the annealing furnace; a plurality of horizontal first heating assemblies and a plurality of horizontal second heating assemblies are arranged on a cover body of the heating module, a lifting structure is connected to the cover body, and the height of the heating module can be adjusted through the lifting structure. The heating module with the adjustable height is arranged in the annealing furnace, so that the thin film is heated more uniformly, local overheating or supercooling is avoided, the uniformity of annealing stability is ensured, the annealing effect is improved, the internal stress of the thin film is eliminated more thoroughly, and the dimensional stability of the thin film is ensured.

This application discloses a casting formwork for the top of a structural column, relating to the technical field of structural column construction. It includes a base, a casting hopper, a baffle, a guide plate, and a slide rail. The base has a casting opening, and the casting hopper is located on one side of the casting opening, having a casting groove. The slide rail is mounted on the base, and the baffle is slidably connected to the slide rail. The casting hopper has a clearance opening for the baffle to slide through, and the portion of the baffle in the casting groove can cover the casting opening. The guide plate is located in the casting groove, with one end rotatably connected to the casting hopper. The rotation axis of the guide plate is perpendicular to the sliding direction of the baffle, and the other end of the guide plate abuts against the end of the baffle near the casting groove. This application can significantly reduce the chiseling work at the casting hopper opening, ensuring the casting quality of the top of the structural column and reducing concrete waste.

This invention provides a continuous ultrasonic welding apparatus and method with active thermal management, relating to the field of ultrasonic welding technology. The continuous ultrasonic welding apparatus and method with active thermal management includes: a support suspension fixedly mounted on the end face of a linear motion platform capable of linear reciprocating movement along the weld seam arrangement direction of the workpiece; at least two sets of actuators sequentially mounted and fixed on the support suspension, and the relative spacing between the actuators is flexibly adjusted by a matching adjustment mechanism. This invention solves the problem of pressure rollers gradually heating up, becoming thermally saturated, and even losing their cooling and shaping ability due to prolonged operation. It enables the pressure roller to apply effective cooling pressure to the molten zone promptly after the welding head is removed, allowing the material to cross the glass transition temperature more quickly and complete solidification and shaping. This reduces the probability of defects such as springback, warping, residual porosity, and delamination in the later stages of the weld, ensuring a more uniform forming quality and mechanical properties throughout the weld.

This utility model relates to the field of automotive bracket technology, and more particularly to a surface flatness control device for the demolding process of an automotive bracket mold. It includes: a worktable, a support frame on the worktable, a switching component on the top of the support frame, a mold component on one side of the bottom of the switching component, and a flattening demolding component on the side of the bottom of the switching component away from the mold component. By setting up the switching component, a motor drives a lead screw to rotate, enabling rapid switching between the upper mold and the mounting plate, thus improving the automation and operational efficiency of the demolding process. Furthermore, by setting up the flattening demolding component, the position of the brush can be adjusted by extending and retracting the telescopic rod of the telescopic cylinder five according to the size and specifications of the material. The brush can remove burrs and minor imperfections from the surface of the material during its ascent, improving the surface flatness of the material.

The invention belongs to the technical field of material forming, and discloses a reinforced thin-wall carbon fiber shell hot-press forming method which comprises the following steps: laying carbon fiber prepreg in a mold from inside to outside, firstly laying ribs, and then laying skin to form a prepreg blank; continuously and sequentially laying a carbon fiber pad with demolding cloth, a silicon rubber pad, an isolating membrane, a breathable felt and a vacuum bag membrane on the surface of the mold, integrally sealing by using a sealing rubber strip, vacuumizing and compacting, and curing in an autoclave; and after curing is finished, cooling, opening the tank, taking out, demolding after cooling to room temperature, and removing the mold and auxiliary materials to obtain the reinforced thin-wall carbon fiber shell. According to the invention, the silicon rubber pad is added on the carbon fiber pad, so that the carbon fiber participating in hot pressing is thickened, and the external soft silicon rubber pad is used as the substrate, so that the pressure transmission of the reinforced structure to the non-reinforced side surface is fundamentally counteracted, and the convex mark defect is thoroughly eliminated. The method is suitable for manufacturing the reinforced thin-wall carbon fiber shell in the aerospace industry.

The application discloses a high-temperature annealing method for reducing surface decomposition of AlN by eliminating surface gap. First, a covering layer material compatible with AlN is completely covered on the surface of an AlN template, and high-purity AlN powder is further inserted when two AlN templates are pasted face to face, so that subsequent high-temperature annealing is carried out in the pasted form. The prepared AlN template has a surface with greatly reduced high-temperature annealing decomposition and a large-area uniform and smooth surface; the process steps adopted by the method are compatible with semiconductor microelectronic technology, and the method is suitable for a process system of high-performance optoelectronic devices related to AlN.

The application discloses a Cr3C2-BN nickel-based ultra-high-speed laser cladding composite coating and a preparation method thereof. In the cladding raw material powder, the mass percentage of the nickel-based powder is 65-75%, the mass percentage of the Cr3C2 powder is 20-30%, and the mass percentage of the h-BN powder is 2-10%. The main steps for preparing the coating are as follows: the three kinds of powders are uniformly mixed and then are put into a laser cladding device; and the laser cladding machine is started to perform laser cladding on a 40Cr rod material rotating appropriately with Ar gas as a protective gas. In the obtained coating, the hard phase particles are mainly Cr3C2 particles; the addition of BN promotes the melting of the Cr3C2 powder, enhances the uniformity of the coating, improves the forming quality of the coating, and generates dendritic networks around the Cr3C2 particles to optimize the mechanical structure of the coating. The coating prepared by the method has good surface morphology and excellent wear resistance and corrosion resistance; the application has simple process, excellent performance of the obtained product and is convenient for industrial application.

The application discloses a manufacturing method of a cylinder body and a compressor. The manufacturing method of the cylinder body comprises the following steps: filling a powder metallurgy base material into a cylinder body mold, and pressure casting and sintering the powder metallurgy base material to form the cylinder body. The cylinder body has a compression cavity on the inner side, and a sliding vane groove which is communicated with the compression cavity and extends along the radial direction of the cylinder body and penetrates through the cylinder body along the axial direction of the cylinder body. The width W1 of the sliding vane groove satisfies the relationship 2.3mm<=W1<=2.6mm. The sliding vane groove is milled by using a milling cutter, so that the width W1 of the sliding vane groove satisfies the relationship 2.6mm<=W1<=2.8mm. The sliding vane groove is polished by using a grinding wheel, so that the width W1 of the sliding vane groove satisfies the relationship 2.7mm<=W1<=2.9mm, and the roughness of the sliding vane groove reaches a first predetermined value R. The application solves the problems of high manufacturing cost and poor performance of the cylinder body in the prior art.

The invention relates to the technical field of new materials, in particular to biodegradable filter cloth and a preparation method thereof.The biodegradable filter cloth is prepared from, by weight, polybutylene terephthalate, modified starch, polybutylene adipate, bamboo fibers, maleic anhydride grafted polyolefin elastomer and a lubricant; through the synergistic effect of all the components and the preparation process, the performance of the filter cloth can be optimized, the component compatibility problem is solved through cooperation of the modified starch and the compatilizer, the uniformity and compactness of the material structure are guaranteed through the bamboo fiber pretreatment and gradient melting process, the pore characteristics of the filter cloth are optimized through the segmented spinning and weaving process, and the filter cloth has the advantages of being high in practicability and high in practicability. Finally, the filter cloth simultaneously has excellent mechanical properties, efficient filtering performance and good biodegradability, is suitable for industrial production, and has wide application prospects in the fields of industrial filtration, environment-friendly treatment and the like.

The application relates to the field of visual intelligence, and discloses a UV curing light source dynamic compensation method and system based on visual intelligence, which comprises the following steps: setting an adjustable UV light source array for curing materials; collecting real-time images of the material surface during the curing process of the adjustable UV light source array; pre-processing the real-time images to obtain target images, obtaining material surface morphology characteristics based on the target images, and extracting micro-geometric structure variation of a curing reaction area based on the material surface morphology characteristics; calculating a radiation energy distribution map for compensating the UV light source according to the micro-geometric structure variation, generating light source control instructions according to the radiation energy distribution map; and sending the light source control instructions to the adjustable UV light source array, and adjusting the output intensity and irradiation angle of each light emitting unit in the adjustable UV light source array. The application can realize dynamic compensation of the UV light source.

This invention discloses a molding device for ultra-flat gypsum board, comprising: a molding table, a smoothing component, and an extrusion plate; along the direction of the production line, the gypsum slurry discharge pipe, the smoothing component, and the extrusion plate are arranged sequentially; the molding table is horizontally arranged, and the smoothing component and the extrusion plate are both located above the molding table; the surface of the extrusion plate is parallel to the surface of the molding table, and the distance between the surface of the extrusion plate and the surface of the molding table is equal to the thickness of the gypsum board; the smoothing component is used to smooth the crests of the gypsum slurry on the lower facing paper, thereby stabilizing the turbulence of the gypsum slurry on the lower facing paper, thus reducing the gaps that may remain between the upper and lower facing papers during the process of the upper facing paper covering the gypsum slurry, and ultimately improving the surface flatness of the gypsum board.

A back-emitting lidar transmitter chip based on a nanobeam switch array includes a nanobeam switch routing network, a metal reflective layer, and a metasurface lens serving as a Fourier transform lens. The nanobeam switch routing network is fabricated on the front side of the chip. After the input optical signal enters the nanobeam switch branch of the network, it is routed by specific nanobeam switch units to the corresponding nanobeam emission branch, and then emitted into free space by specific nanobeam emission units. The front metal reflective layer reflects the upward-radiated light waves downwards, and finally, all downward-emitted light waves are collimated and emitted in a designated direction by the back metasurface lens. This invention enables directional transmission, simultaneously achieving switch selection and vertical emission functions. The silicon-based metasurface lens can serve as a Fourier transform lens to achieve high-precision, wide-range beam scanning, providing a superior technical path for the large-scale manufacturing of silicon-based integrated lidar transmitter chips.

The utility model relates to the technical field of motors, and discloses a motor rotating shaft structure and a permanent magnet servo motor, the motor rotating shaft structure comprises a rotating shaft main body and a bearing transition sleeve sleeved on the rotating shaft main body, the bearing transition sleeve comprises a first sleeve body section and a second sleeve body section which are integrally formed, and the diameter of the first sleeve body section is larger than that of the second sleeve body section. And the transition end surfaces of the first sleeve body section and the second sleeve body section and the peripheral surface of the second sleeve body section are plated with ceramic layers. According to the motor rotating shaft structure, the combination mode of the rotating shaft body and the bearing transition sleeve is innovatively used, ceramic plating machining is transferred to the bearing transition sleeve, ceramic plating machining does not need to be carried out on the motor rotating shaft, and the constraint that the clamping stroke of a machine tool is limited, and tool changing and tool setting are tedious in the whole shaft machining process is eliminated; the size of each part can be accurately controlled in the grinding machine machining process, so that the thickness of a ceramic plating layer is uniform, the surface flatness is high, the overall machining precision is greatly improved, the insulation performance reduction caused by machining errors is avoided, and a reliable guarantee is provided for effective inhibition of shaft current.

The present application relates to a kind of etching solution for quartz crystal.The etching solution is composed of the following components according to mass percentage, 20% hydrofluoric acid, 15% nitric acid, 0.15-0.7% additive, and the rest is ultrapure water.The four-component additive includes sodium butylnaphthalene sulfonate, PE6400, 1-butyl-3-methylimidazolium tetrafluoroborate, 4-mercapto butyric acid.Among them, sodium butylnaphthalene sulfonate prevents the aggregation and deposition of particles generated during etching, maintains the clarity and uniformity of the etching solution.PE6400 has both hydrophilic and hydrophobic properties, and plays a role in solubilization, dispersion and defoaming.The two can significantly reduce the protrusions remaining after etching of quartz crystal, reduce roughness, and make the surface more smooth.1-butyl-3-methylimidazolium tetrafluoroborate and 4-mercapto butyric acid can control the etching of quartz side, and produce symmetrical V-shaped structure.

This invention discloses a method for manufacturing an ohmic contact for a gallium nitride (GaN) device. The method includes a substrate layer on which a buffer layer, a GaN channel layer, an aluminum nitride (ANH) isolation layer, an ANH barrier layer, and a cap layer are sequentially epitaxially grown. Through cleaning, photolithography, and etching processes, a window is created from the cap layer to the ANH barrier layer. Source and drain metals are deposited using an electron beam evaporation stage or an ion sputtering machine. The source and drain metals are sequentially composed of an alloyed contact metal, a barrier layer metal, and an anti-oxidation protective layer metal. The alloyed contact metal is a multilayer metal alloy structure of Sc / Ti / Al. The source and drain metals are annealed at high temperature in a nitrogen atmosphere using a rapid annealing furnace. The alloying of AlGaN with Sc / Ti / Al yields the ohmic contact. The ohmic contact proposed in this invention can reduce the ohmic contact resistance by 20%–50% and lower the ohmic contact annealing temperature by 50–100 degrees Celsius compared to existing processes, while also improving surface flatness. This results in a corresponding improvement in the stability and reliability of the ohmic contact, as well as the device's operating current and output power.

The invention relates to a multispectral TDICCD preparation method for improving spectral response consistency, and belongs to the field of multispectral TDICCDs. The method comprises the following steps: sequentially forming a potential well and a gate oxide layer on a silicon epitaxial substrate; depositing a first layer of polycrystalline silicon on the surface of the gate oxide layer, performing large-dose ion implantation, and then performing nitrogen treatment annealing; forming an electrode pattern on the first layer of polycrystalline silicon, and then forming a first interlayer insulating layer through a silicon dioxide and silicon nitride deposition process; depositing to form a second layer of polycrystalline silicon, performing large-dose ion implantation, and then performing nitrogen treatment annealing; forming an electrode pattern on the second layer of polycrystalline silicon, and then forming a second interlayer insulating layer through a silicon dioxide and silicon nitride deposition process; a layer of BPSG is deposited on the surface of a currently formed device, then high-temperature backflow treatment is performed, and then low-temperature silicon dioxide deposition and CMP processes are performed to flatten the surface. The method is high in process stability and operability, and spectral response consistency can be improved.

The utility model discloses a kind of quick riveting flanging mould of battery top cover pole, including mould insert for accommodating the top cover assembled with pole, further including riveting pressure head connected with pneumatic punch press, riveting pressure head includes: riveting slider punch, its head shape is matched according to pole straight edge contour;Riveting slider riveting punch, for providing support force to the side surface of pole, its end is embedded in the lower end of riveting slider punch;Riveting inclined top, slidingly connected in the axial cavity of riveting slider riveting punch, be provided as gradually outwardly inclined structure from top to bottom. Thus, through the synergistic effect of riveting slider punch, riveting slider riveting punch and riveting inclined top, pole straight edge can be accurately turned into 90 °, and flanged rear surface flatness is high, meet the riveting accuracy and quality requirement of excessive current power battery top cover, guarantee the battery performance and security;Mould each component can be quickly adjusted and replaced according to different needs, reduce mould development design and debugging time.

This invention discloses a polishing fixture and a method for surface polishing large-size cadmium zinc telluride substrates. The polishing fixture is a ceramic disc with a central convex shape, and the polishing fixture transitions smoothly from the center to the periphery. The micro-convex fixture effectively controls the "edge collapse" phenomenon of the substrate, solving the problem of "thick in the middle and thin around the edges" surface shape that is easily formed during traditional polishing. This improves the surface flatness of the substrate, especially solving the problem of poor surface flatness in the processing of large-size cadmium zinc telluride substrates. This lays a good foundation for improving the yield of high-quality mercury cadmium telluride epitaxy, device interconnection, and detector performance consistency.

This invention relates to the field of aqueous zinc-ion battery technology, and discloses a method for preparing a three-dimensional zinc anode for zinc-ion batteries and its application. The method includes: placing a conductive substrate (used as a framework) and metallic zinc (used as a filler) into a roller press for composite pressing, so that zinc is embedded in the conductive substrate, obtaining a zinc / conductive substrate composite material; folding the zinc / conductive substrate composite material and continuing to place it into the roller press for further pressing, repeating this folding and pressing process multiple times to obtain a three-dimensional zinc anode with a smooth surface and uniform thickness. In this invention, the repeated rolling of the zinc foil can greatly increase the surface smoothness of the zinc anode and make the zinc crystal interface more compact, effectively reducing stress concentration during battery cycling, transforming major cracks into finer, multi-directional cracks, and achieving a uniform electric field distribution, thereby inducing uniform zinc deposition and significantly enhancing the stability of the zinc anode.

The application discloses a GaN-based light-emitting diode epitaxial wafer and a preparation method thereof and a GaN-based light-emitting diode, and relates to the field of semiconductor photoelectric devices. The GaN-based light-emitting diode epitaxial wafer comprises a substrate and a nucleation layer, an intrinsic GaN layer, an N-type semiconductor layer, a multi-quantum well layer, an electron blocking layer and a P-type semiconductor layer arranged on the substrate in sequence; and the P-type semiconductor layer is a C / O co-doped P-type GaN thin film layer. By implementing the application, the brightness of the light-emitting diode can be improved, the anti-static capacity can be improved, and the surface roughness can be reduced.

The application discloses a kind of TBM concrete spraying flatness control and concrete consumption statistics method, the method includes the following steps: 1) laser grating reading device and signal warning light;2) install laser grating transmitting device;3) install point cloud scanning device;4) obtain excavation profile three-dimensional point cloud data, and process, obtain complete tunnel excavation topography point cloud model;5) complete scanning paragraph primary support construction;6) start point cloud scanning device, the three-dimensional point cloud data obtained is spliced and handled, and complete tunnel primary support topography point cloud model is obtained;7) the point cloud model data of processing completion is imported into primary support thickness analysis module, calculates tunnel primary support thickness and actual effective primary support concrete spraying amount, and compared with preset completed primary support design data, generates primary support flatness evaluation;The application can make the operator clearly understand the initial spraying thickness and the profile after primary support, effectively control the concrete spraying thickness, and improve the surface flatness.

The invention relates to a graphene visible light detector based on a metal-insulating layer-semiconductor structure, which comprises a substrate, a silicon layer and a graphene layer, and further comprises a first silicon dioxide layer, a second silicon dioxide layer and an insulating layer, the insulating layer, the second silicon dioxide layer and the substrate are sequentially arranged from top to bottom, the insulating layer is provided with a through window, and the through window is provided with a through hole. After the first silicon dioxide layer is formed in the through-type window by adopting an oxygen plasma bombardment process, the graphene layer covers the first silicon dioxide layer, is in contact with the first silicon dioxide layer and is positioned in the through-type window, a first electrode is arranged on the surface, far away from the first silicon dioxide layer, of the graphene layer, and a second electrode is connected to the side surface of the silicon layer; the thickness of the first silicon dioxide layer is less than 5 nanometers. Compared with the prior art, the method has the advantages of high speed, high responsivity, low noise characteristic, wide-spectrum response uniformity and the like.