45 results about "Surface smoothness" patented technology

The present application relates to the technical field of ceramics, and particularly relates to a sanitary ceramic glaze, a preparation method and application thereof. The sanitary ceramic glaze is made of the following chemical components with mass percentage: SiO2 58.6-63.6%, Al2O3 6-11%, CaO 10-15%, MgO 1-5%, Fe2O3 0.05-2%, TiO2 0.02-1.2%, K2O 11-16%, Na2O 0.9-5%, and the sum of the mass percentages of the chemical components is 100%. The sanitary ceramic glaze provided by the present application has high hardness, excellent easy-to-clean and antibacterial properties, an antibacterial rate of more than 99% and significantly improved durability, meets the market demand of high-end sanitary wares, and overcomes the defects of the existing sanitary ceramic glaze technology, such as insufficient surface smoothness, non-durable antibacterial performance, and mutual restriction of easy-to-clean and antibacterial properties.

This utility model discloses a grinding device for processing butterfly valve stems, belonging to the technical field of butterfly valve stem processing equipment. It includes a base, a worktable fixedly connected to the surface of the base, a carrier plate fixedly connected to the surface of the worktable, a grinding frame mounted on the surface of the worktable, and a grinding assembly mounted at the bottom of the grinding frame. An electrostatic elimination assembly is installed on the surface of the worktable. The workpiece is placed on the surface of the carrier plate and secured by locking components. The grinding assembly at the bottom of the grinding frame grinds the workpiece, thereby improving its surface smoothness. An ion fan is connected to an air guide seat via a rotary joint and an air guide pipe. An air blowing hood is fixedly connected to the surface of the air guide seat. When electrostatic treatment of the working area is required, the ion fan is activated, and ionized air is blown along the air guide pipe to the air guide seat, and then blown from the opening of the air blowing hood onto the surface of the carrier plate, providing excellent electrostatic elimination performance.

The application discloses a precision instrument adjustable feed amount planer device, and relates to the technical field of planer devices, which comprises a workbench, a clamping plate is slidably arranged on the inner wall of the workbench, a sliding rail is fixedly arranged on the surface of a fixing table, a sliding table is slidably arranged on the outer wall of the sliding rail, a telescopic table is slidably arranged on the inner wall of the sliding table, a force storage spring is arranged between the telescopic table and the sliding table, a planer cutter is fixedly arranged on the bottom of the telescopic table, a friction wheel is fixedly arranged on the bottom of the workbench, and an adjusting device is further arranged on the surface of the workbench, so that the planer cutter and the friction wheel are prevented from scratching the processed surface again during the resetting process, the surface of the wood plate is prevented from being scratched or secondarily damaged, the machining precision and the surface smoothness are improved, the automatic lifting of the planer cutter is realized through the inclined surface contact and the spring force storage, the manual adjustment steps are reduced, and the continuous machining efficiency is improved.

This invention discloses a bamboo and wood wire drawing plate with an acute-angle cutting edge, comprising a steel plate substrate and several wire drawing holes embedded thereon. The wire drawing holes are made of 45# steel through quenching treatment, with an outwardly convex conical inlet at the center of the conical shape. A ring of acute-angle cutting edges less than 60° is formed around the inlet, with a radius of curvature of the cutting tip not exceeding 0.08mm. The wire drawing holes have a straight section not exceeding 2mm and an enlarged section with a diameter increased by more than 1mm. The wire drawing holes are assembled onto the substrate using a tight fit, ensuring no looseness between the wire drawing holes and the substrate. This application enables one-time cutting forming with a large allowance of more than 0.5mm, and the wire drawing holes are tightened more and more during processing, significantly improving processing efficiency while effectively reducing frictional resistance and ensuring the surface smoothness and structural stability of the wire.

The application provides a method for post-processing of a photosensitive resin component, and belongs to the technical field of photosensitive resin, and comprises the following steps: immersing the photosensitive resin component into a solution to obtain an intermediate; and sequentially performing atomization treatment and solidification on the intermediate to complete the post-processing. The photosensitive resin component is placed in an atomized environment for photocuring, the surface properties of the component are improved, the adhesion of the model surface is reduced to a certain extent, the surface color of the original component is changed, the surface smoothness is increased, the surface quality of the component after solidification is improved, the surface protection effect of the component is achieved, and the service life of the photosensitive resin component is prolonged.

The present application provides a film forming method. The present application is a film forming method in which a raw material solution that has been atomized is heat treated to form a film, and includes the following steps: atomizing or dropletizing the raw material solution to generate mist; using a carrier gas to transport the mist to a film forming section; and supplying the mist from a nozzle to a substrate in the film forming section, heat treating the substrate to form a film, and when the area of the opening surface of the nozzle is set as S [cm 2 ], the longest distance among the distances from a point in the opening surface to the surface of the substrate is set as H [cm], and the flow rate of the carrier gas supplied from the nozzle is set as Q [L / min], SH / Q≧0.015 is satisfied. Thus, a film forming method is provided in which abnormal growth is suppressed and a film with good surface smoothness is formed.

This invention discloses a GaN PMUT device with a low-stress structure featuring isolation trenches and its fabrication method. At the device level, the invention utilizes high-purity GaN single crystals as the piezoelectric layer to achieve higher ultrasonic transduction efficiency. By severing the continuity of the film in the planar direction through isolation trenches penetrating multiple composite films and part of the substrate, a channel and space for releasing accumulated residual stress are provided, effectively reducing the concentration of local residual stress and overcoming array crosstalk problems. At the fabrication method level, this invention determines the design parameters of the GaN PMUT device through finite element simulation. Electrochemical wet etching reduces damage to the epitaxial structure during the stripping process, improving the surface smoothness and uniformity of the device after stripping. Simultaneously, the isolation trenches effectively reduce crosstalk between PMUT units, decrease film stress, and significantly increase the piezoelectric driving bending moment within the film, thereby improving ultrasonic transmission and reception performance.

The application relates to the technical field of optical processing, and provides a zinc selenide aspheric lens and a numerical control polishing process thereof, which is carried out by using a numerical control polishing machine, comprises main steps of rough polishing, fine polishing, finishing and the like, and process parameters are adjusted according to the characteristics of zinc selenide, so that the zinc selenide aspheric lens with a diameter of less than 320 mm can be polished, the global surface type PV of the zinc selenide aspheric lens is controlled to be less than 0.3 microns by means of the numerical control polishing machine, white zinc metal particles generated due to heating of the lens surface in the polishing process are avoided, the surface smoothness of the finished product reaches 60 / 40, and the laser level is reached. The application also has reference significance for polishing the surface of zinc selenide with a diameter of more than 320 mm.

The application discloses a high-surface-quality 980MPa-grade hot-dip galvanizing DH steel and a preparation method thereof. The main chemical component mass content of the hot-dip galvanizing DH steel is as follows: C: 0.17-0.21%, Si: 0.4-0.7%, Mn: 1.8-2.2%, Nb: 0.01-0.02%, Ti: 0.01-0.02%, Cr: 0.4-0.5%, and Als: 0.14-0.9%. The method adopts low-carbon design and high-dew-point annealing process to produce the hot-dip galvanizing steel plate which meets the low-carbon environmental protection requirement and has high surface quality, so as to meet the urgent needs of the market. The high-dew-point annealing process is a new type of annealing technology, the oxygen partial pressure is increased by increasing the dew point, the Si and Mn element internal oxidation is realized, and thus the plating leakage defect is effectively improved, and the surface smoothness and flatness of the steel plate are improved.

This application discloses a thin film and its preparation method, an optoelectronic device and its preparation method, and a display device. The material of the thin film includes inorganic particles. The thin film described in this application has low roughness and good surface smoothness.

The present application relates to the technical field of metal surface modification, and particularly relates to an electron beam melting composite grinding method capable of improving the surface smoothness of high-carbon steel, which comprises the following steps: step one, installing a grinding and polishing rod; step two, placing a high-carbon steel sample on a loading platform; step three, vacuumizing; step four, aiming an electron beam gun head at the corners of the high-carbon steel sample and lowering the height of the grinding and polishing rod; step five, starting the electron beam emitting device and the grinding and polishing rod; step six, controlling the horizontal movement of the loading platform to realize horizontal polishing and grinding; step seven, adjusting the positions of the electron beam gun and the grinding and polishing rod so that the electron beam gun is directly opposite the unpolished and ungrounded part of the high-carbon steel sample; step eight, starting the electron beam emitting device and the grinding and polishing rod; and step nine, repeating steps six to eight to complete the polishing and grinding treatment.The present application has the beneficial effect that it is suitable for steel materials with high hardness and can realize mirror polishing without removal and zero loss through the mode of first melting and then liquid polishing.

The application discloses a cast inner wall polishing process and device, and relates to the polishing technology field.The device comprises a base, a polishing disc, an adjusting mechanism and a rotating mechanism; the adjusting mechanism realizes the up-down displacement, the inclination angle and the rotation angle adjustment of the polishing disc through a movable seat, a rotating seat, a displacement frame and a connecting rod assembly; the rotating mechanism drives the polishing disc to rotate through multi-stage bevel gear transmission.The process comprises eight steps of surface pretreatment, cleaning and protection, rough grinding, fine grinding, polishing, abrasive flow polishing, thorough cleaning and quality inspection.The multi-degree-of-freedom adjusting mechanism makes the polishing disc flexibly adapt to the complex inner wall structure, can uniformly polish the inner part of the cast and eliminate the polishing dead angle; in cooperation with the abrasive flow polishing process, the micro burrs can be effectively removed, the surface smoothness and the processing efficiency are significantly improved, and the device has the advantages of convenient operation, safety and high efficiency, strong adaptability and high processing quality.

This invention discloses a flat coating fixture for non-intumescent fire-retardant coatings and its application method. The fixture includes a clamping part and a connector. The connector is mounted on the clamping part, which clamps the component to be coated. The surfaces of the clamping part and the connector serve as the standard surface for coating, with the location of the standard surface corresponding to the thickness of the fire-retardant coating. Simultaneously, the standard surface supports a scraper that slides on it. The standard surface formed by the clamping part and the connector is continuous and corresponds to the contour of the cross-section of the component to be coated. By using multiple flat coating fixtures in combination, a phased working area for the fire-retardant coating can be formed, allowing for convenient control of the coating thickness and surface smoothness. During the coating process, the fixture provides support before the fire-retardant coating adhesion is complete, preventing the coating from slipping or deforming due to its own weight before initial setting. After coating, the shape is regular and more aesthetically pleasing, with minimal cracks, hollows, and depressions.

The present invention provides a conductive polycarbonate resin composition that exhibits excellent surface smoothness, rigidity, and dimensional stability during molding. [Solution] A polycarbonate resin composition comprising (A) 100 parts by weight of polycarbonate resin (component A), (B) 20 to 120 parts by weight of glass flakes (component B) having a number average particle size of 5 to 160 μm and an average thickness of 0.1 to 1.5 μm, (C) 20 to 60 parts by weight of polyester resin (component C), (D) 1 to 30 parts by weight of conductive carbon black (component D), and (E) 0.001 to 1 part by weight of at least one phosphate ester (component E) selected from the group consisting of phosphonic acid esters (component E-1) with an acid value of 0.01 to 0.30 mg KOH / g, acidic phosphate esters (component E-2) with an acid value of 10 to 200 mg KOH / g, and stearyl acid phosphate zinc salt (component E-3).

The present application belongs to the technical field of carbon fiber material coating, and particularly relates to a preparation and application method of low surface resistance coating for carbon fiber composite material, wherein the coating is formed by mixing water-based conductive paste and water-based resin paint according to a mass ratio. The application method comprises the following steps: polishing the carbon fiber substrate to expose the carbon fiber monofilament layer, spraying the coating for at least 3 times (spraying once, flash drying once, spraying again, flash drying twice, and spraying for 3 times in total), polishing with 1500-mesh, 2000-mesh and 3000-mesh water sandpaper in sequence, wet polishing with a new sponge wheel and clean water, and finally baking to remove moisture. Through the technical scheme, a high-performance black coating with a surface resistance of less than or equal to 1 ohm / m2, a roughness Ra of less than 0.5 microns and an adhesion of less than or equal to 1 can be formed on the surface of the carbon fiber composite material, thereby solving the problem that the carbon fiber coating in the prior art is difficult to balance the conductivity, adhesion and surface smoothness. The present application is environmentally friendly and operable, and is suitable for surface treatment of carbon fiber composite material products in the fields of aerospace, military industry and the like.

This application discloses a method for cleaning the thin film on the inner wall of an MPCVD equipment cavity, comprising: placing a container containing organic solvent in the cavity of the MPCVD equipment, evacuating the gas pressure inside the cavity to below 1 kPa, and maintaining this pressure for a preset time; after the vacuum in the cavity is broken, removing the cavity, heating the cavity to at least 70°C, and then cooling it to room temperature; using a vaporization device to spray gas tangentially along the inner wall of the cavity to peel off the thin film on the inner wall; reinstalling the treated cavity back into the MPCVD equipment, introducing hydrogen gas into the cavity and starting a microwave power supply to ionize the hydrogen gas to form hydrogen plasma, and using the hydrogen plasma to etch and remove residual impurities on the inner wall of the cavity, thus completing the cleaning of the thin film on the inner wall of the cavity. This application achieves efficient cleaning of deposited thin films without mechanical contact, avoiding damage such as scratching and bumping of the inner wall of the cavity, and ensuring the surface smoothness of the cavity; the high cleanliness of the inner wall of the cavity after cleaning is beneficial to improving the quality of the diamond products prepared subsequently.

This invention discloses a liquid deposition coating device and process for metal powder, relating to the field of metal powder surface modification technology. It aims to solve the technical problem of uneven distribution of powder and grinding media within a drum due to the presence of the material's natural angle of repose. The device includes two support pipes, a drum, a wave-sequence pushing mechanism, and a rolling assembly arranged inside the drum. This invention uses the sequential action of the wave-sequence pushing mechanism to form a mechanical peristaltic wave that propagates from both ends to the middle within the drum, forcibly breaking the material's angle of repose and solving the "dead zone" problem of material accumulation at the ends of traditional drums. This achieves uniform mixing and efficient conveying throughout the entire drum axis. Combined with the dynamic screening and agglomeration effect of the rolling assembly, the distribution of grinding media and energy transfer path are optimized, transforming disordered collisions into ordered concentrated shearing. This significantly improves the sphericity, sphericity, and surface smoothness of the coated powder, and effectively prevents over-grinding.

This utility model relates to the technical field of plastic product raw material processing devices, specifically, to a processing device for improving the surface smoothness of plastic products. It includes an outer water tank, with an inner mesh cylinder whose bottom end extends into the tank and is fixedly installed at the top. The top of the inner mesh cylinder is connected to the outside. A drain pipe for discharging cleaning wastewater is fixedly installed at the bottom of the outer water tank. A discharge pipe extending out of the outer water tank is fixedly installed at the bottom of the inner mesh cylinder. An electric waterproof discharge valve is fixedly installed on the top of the discharge pipe. Multiple temperature-controlled electric heating rods for drying the inner mesh cylinder after cleaning are fixedly installed on the bottom cylinder of the outer water tank. A blowing drying assembly is also provided on the outer water tank for blowing air towards the bottom of the inner mesh cylinder for drying. This utility model facilitates the cleaning of granular raw materials, reduces interference from dust and impurities, and helps improve the surface smoothness of plastic products.

The application relates to a magnetic force grinding device and a magnetic force grinding and polishing method for a titanium alloy implant, and belongs to the technical field of grinding and polishing. The device comprises a grinding bin and a bin cover, is arranged above a main machine base, is internally provided with grinding medium, is internally provided with an elastic support seat on the inner wall of the bottom end of the grinding bin, is screw-connected to the inner wall of the upper end of the grinding bin, is provided with an intermittent exhaust valve on the bin cover, senses the gas pressure in the grinding bin, intermittently releases pressure, forms movable air pressure, is provided with a dripping clamp cylinder in the middle of the bin cover, is vertically arranged on the bin cover, is coaxial with the elastic support seat, is internally provided with an oxidation assisting liquid, is provided with a liquid leakage opening at the lower end of the dripping clamp cylinder, is provided with an elastic movable part at the liquid leakage opening, and the oxidation assisting liquid is added by dripping intermittently to form a soft oxidation layer on the surface of the titanium alloy. The soft oxidation layer is removed by cooperating with a magnetic needle driven by a magnet array, and the grinding efficiency and surface smoothness are improved.

The application belongs to the technical field of numerical control machining, and discloses a deep hole machining method. First, a first guide hole and a pre-drilled hole with a size smaller than a designed radial size are milled by using a straight head gun drill, and then a second guide hole and a deep hole are milled by using a ball head gun drill. The straight head gun drill is used for preliminarily rough machining the pre-drilled hole, and the ball head gun drill is used for subsequent fine milling drilling. The pre-drilled hole provides a chip removal channel for cutting chips in the ball head gun drill milling process, the cutting chips can be quickly removed, the inner wall of the deep hole is prevented from being scratched, and the size precision and surface smoothness of the deep hole are ensured. Meanwhile, the pre-drilled hole can provide a guiding effect for the movement of the ball head gun drill, and the straightness of the deep hole is greatly improved.

This invention provides a glass fiber reinforced polyamide composite material, its preparation method, and its application. The glass fiber reinforced polyamide composite material comprises a polyamide matrix, glass fibers, and a rigid flow aid; the rigid flow aid is at least one of a three-armed aromatic polyamide; the structural formula of the three-armed aromatic polyamide is as follows: The preparation method includes: mixing the polyamide matrix, glass fibers, rigid flow aid, and optionally a surface compatibilizer, followed by molding to obtain the glass fiber reinforced polyamide composite material. The composite material prepared by this invention exhibits improved surface smoothness, reduced fiber floating phenomenon, and enhanced mechanical strength.

This utility model discloses a metal surface electrophoresis device to prevent scratches, including an electrophoresis tank. A tank cover is provided on the top side of the electrophoresis tank, and a lifting component is provided between the electrophoresis tank and the tank cover. A long groove with a cross shape is opened on the top side of the tank cover. Multiple fixing plates are fixedly installed in the long groove, and each fixing plate has a round hole. Through the cooperation of a synchronous clamping component and a transmission component, the workpiece is synchronously clamped on all four sides. Rotating the handwheel drives the rotating rod, which drives the transmission bevel gear to drive the other four gears to rotate the threaded rod. This causes the slider to drive the connecting rod and the clamping plate to move relative to each other, fixing the workpiece in the electrophoresis tank. Anti-slip pads are provided on the opposite surfaces of the clamping plates to avoid direct contact with the workpiece and thus prevent scratches. The workpiece is suspended and clamped by the clamping plates and does not contact the inner wall of the electrophoresis tank, thereby effectively preventing displacement and scratches caused by solution flow and workpiece collision. This ensures the surface smoothness of the workpiece and improves the adhesion and integrity of the electrophoretic coating.

The application discloses a tee type flange connecting electrode for pure water and a forming method thereof, and belongs to the technical field of CNC machining and material welding forming. The electrode comprises a tee main body and a flange welded to the interface end of the tee main body; the tee main body is integrally forged and formed through CNC precision machining, and the wall thickness error is controlled within mm. The flange and the tee main body are seamlessly welded, and the welding protrusions overflowing from the inside and outside of the welding position are removed, so that the welding seam is smooth and free of sand holes and pores. The inner flow channel surface of the tee electrode is polished and treated by electroplating hard chromium or plating platinum, so that the inner surface smoothness reaches Ra The application significantly improves the pressure bearing capacity and service life of the electrode through the integrally forged and seamless welding process, enhances the corrosion resistance by using the high smoothness plating layer, reduces the fouling problem caused by ionization discharge, and has the advantages of scientific structure, convenient connection, low cost and installation convenience.

The present invention provides a semiconductive composition for a cable, comprising: (a) a polyolefin-based resin containing at least one functional group selected from the group consisting of maleimide-based one and allyl ester-based one; and (b) a carbon-based material containing at least one selected from the group consisting of carbon black and carbon nanotubes. According to the present invention, space charge characteristics are improved such that problems of electric field distortion or long-term insulation lifetime deterioration can be solved, mechanical properties and processability are excellent, cross-linking characteristics and scorch stability can be improved, and high-temperature volume resistance, electrical characteristics allowing withstanding of high direct-current voltage and surface smoothness can be excellent. In addition, space charge in the direct-current power cable can be suppressed to ensure long-term reliability and long-distance power transportation is enabled.

The application provides a calendering method of aramid insulation paper, and relates to the field of high polymer chemistry and polymer processing, and comprises the following steps: step one, preheating aramid insulation paper; step two, feeding the substrate into a calendering machine, and performing calendering treatment at a set temperature, pressure and linear speed by using a multi-stage pressure control system; and step three, monitoring the thickness uniformity and surface quality of the aramid insulation paper in real time through an online detection system. The application has the following advantages: through the synergistic effect of multi-stage progressive pressure control, high-precision temperature regulation (±2 ℃) and optimized linear speed, and in combination with machine vision online detection and real-time feedback, the shortcomings of traditional calendering processes are effectively overcome, the surface smoothness, thickness uniformity and mechanical properties of the aramid insulation paper are significantly improved, the precision, efficiency and quality consistency of the production process are greatly improved, and the generation of surface defects such as stripes and corrugations is avoided.

The present application provides a rubber composition, a rubber composite, and a rubber cured product, each of which is excellent in dispersibility and orientation of cellulose nanofiber, and in one embodiment, the present application provides a rubber cured product which exhibits good physical properties (particularly, tensile properties and modulus) and surface smoothness. In one embodiment, the present application provides a rubber composition comprising cellulose nanofiber, a first rubber, and a second rubber, the first rubber being unmodified liquid rubber, and the second rubber being modified liquid rubber.