72results about How to "Reduce roughness" patented technology

The invention discloses an ultrasonic vibration auxiliary milling method for a Ti2AlNb material, and belongs to the technical field of alloy material machining. The method comprises the following steps: removing a surface oxide layer from a Ti2AlNb material piece; the Ti2AlNb material piece is subjected to longitudinal-torsional composite ultrasonic vibration auxiliary milling machining; wherein the longitudinal-torsional composite ultrasonic vibration is used for assisting milling, and the vibration parameters of the longitudinal-torsional composite ultrasonic vibration are as follows: the torsional vibration tangential line amplitude is 4-8 microns, the ultrasonic frequency is 20-30 kHz, the longitudinal vibration amplitude is 3-6 microns, and the phase difference is 90 degrees. According to the method, the Ti2AlNb material piece with the machining surface small in roughness value and large in residual compressive stress value is finally obtained, harmful tensile stress of the machining surface obtained through pure milling machining is converted into compressive stress, generation of microcracks can be effectively restrained, and the service life of the material is prolonged.

The invention belongs to the technical field of talc, and provides a method for detecting fluorescent substances in talc raw ore, which comprises the following steps: S1, carrying out ball milling on the talc raw ore in a ball mill, sieving to obtain sieved powder, and adding deionized water into the sieved powder to obtain slurry; s2, adding the slurry into the mixture to enable the pH value of the slurry to be 5, stirring, and standing in a water bath for 2-3 hours to obtain a first precipitate; s3, adding a thiourea-ascorbic acid solution into the first precipitate to obtain a second precipitate; and S4, carrying out secondary ball milling on the second precipitate, and spreading the second precipitate in an enamel plate to detect whether the talc raw ore contains the fluorescent substances or not. The hydrochloric acid can dissolve quartz and mica to avoid generation of background fluorescence or quenching effect, and the nonionic surfactant polyethylene glycol can be adsorbed on the surface of the mineral to reduce interfacial tension, so that the hydrochloric acid is easier to infiltrate tiny pores, the pit defect caused by local over-corrosion is reduced, the pickling uniformity is improved, and the detection sensitivity is improved.

This application discloses a method and apparatus for water-guided laser curve processing based on curvature adaptive variable voltage amplitude-frequency, relating to the field of water-guided laser processing technology. It includes: collecting curvature radius data at various points along the water-guided laser processing path; establishing a control mapping model between the curvature radius and deflection voltage parameters based on the curvature radius data; wherein the deflection voltage parameters include voltage amplitude and driving frequency; using the curvature radius of the current processing point as input, obtaining a target voltage amplitude and target driving frequency that match the curve characteristics corresponding to the current curvature radius through the control mapping model; converting the target voltage amplitude and target driving frequency into driving signals and outputting them to the deflection electrode array to dynamically adjust the deflection voltage parameters and control the water beam to complete deflection scanning processing along a preset curve trajectory. This solves the problems of mismatch between deflection response and curve geometry, large trajectory tracking errors, and poor surface quality consistency in existing curve processing technologies.

The utility model relates to an arc-angle drill bit, which comprises a supporting seat, an arc-angle drill bit and an arc-angle drill bit, the multiple arc angle drill bits are arranged on the circumference and are all fixed to the supporting base, and cutting edge parts of the arc angle drill bits are arranged to be in a wave shape; and the multiple discharging holes are formed in the end face of the supporting base. According to the drill bit, the arc-angle drill bit is arranged, and the arc cutting edge of the arc-angle drill bit can disperse cutting stress and reduce the risk of edge tip cracking during drilling, so that the service life of the drill bit can be prolonged, the number of times of drill bit replacement can be reduced, burrs and microcracks on the edge of a drilled hole can be reduced, and the hole wall roughness can be reduced. The supporting seat and the arc-angle drill bit are made of steel, so that the impact resistance is high during drilling, tipping is not easy to occur under intermittent cutting, the price is lower than that of a sintered drill bit, and the practicability is improved.

Disclosed are a composition for removing edge beads from a metal-containing resist or a metal-containing resist developer composition, and a method of forming or providing a pattern using the composition or the developer composition. The composition for removing edge beads from a metal-containing resist or the developer composition of a metal-containing resist may include: a cyclic compound including in a ring at least one heteroatom selected from N, O, and S and at least two carbonyl groups; and a solvent.

This invention belongs to the field of material surface treatment technology, specifically relating to a wafer polishing slurry, its preparation method, and its application. The wafer polishing slurry comprises abrasives, oxidants, dispersants, surfactants, pH adjusters, and water. The components of the wafer polishing slurry work synergistically, shortening polishing time and improving polishing efficiency when applied to wafer polishing. Furthermore, it significantly improves the surface quality of the polished wafer, markedly reducing scratches and defects, and lowering surface roughness to below 0.15 nm, thus meeting the surface quality requirements of fields such as power electronics and radio frequency devices.

The invention provides a tool servo-driven multi-station metal sheet grooving device, and particularly relates to the technical field of metal sheet grooving machining, the device is based on a base, a first DD motor with a driving mechanism is arranged in the center of the base, and a positioning unit capable of achieving X-axis and Y-axis accurate adjustment is assembled at the top of the base; five sets of feeding conveying units driven by servo motors are evenly arranged on the base along the circumference of the first DD motor, each set of feeding conveying units is matched with a set of grooving machining units, the grooving machining units are in sliding fit with a feeding conveying module through feeding adjusting units, and a cutter set is driven through the servo motors and a synchronous transmission structure to achieve metal sheet grooving operation. The equipment is further provided with a workpiece fixing base matched with the positioning unit and a pentagonal protection structure covering the machining area. According to the equipment, through multi-station circumferential layout and full-servo drive control, automation of the metal sheets is achieved, the efficiency and precision of grooving machining of the metal sheets are greatly improved, and the safety of machining operation is higher.

The utility model relates to a knife sharpening technical field, and disclose an automatic knife sharpening device, including the knife rest of installation for the knife edge part of cutting knife is used to the knife sharpening assembly of grinding, the knife sharpening assembly includes the electromagnet and the knife sharpening stone of knife rest installation through the knife sharpening support, the knife sharpening stone is opposite with the knife edge part of cutting knife and is adjusted the interval of both through the electromagnet, the utility model discloses the interval of the knife sharpening stone and cutting knife is adjusted through the electromagnet, when electrifying, electromagnet core drives push rod and makes the knife sharpening stone close to the knife edge, after power off, reset under the spring action, need not stop the machine to complete grinding, can greatly shorten the knife sharpening time to improve equipment utilization and processing efficiency, and then improve actual capacity, also avoid the body injury and the dust inhalation etc. safety hidden danger brought by manual stop operation simultaneously.

This invention discloses a machining process for precision screws, belonging to the field of mechanical manufacturing technology. It includes the following steps: S1, rough machining and forming: treating the surface of the bar stock and machining functional slot structures, followed by pre-deburring; S2, structural strengthening: heat-treating the workpiece for strengthening; S3, precision finishing: correcting the form and position tolerances of the heat-treated workpiece and precision grinding each surface; S4, quality assurance delivery: completing inspection, cleaning, and packaging. This process flow is clear, employing a logical arrangement of "forming first, then strengthening, and then fine-tuning," resulting in a workpiece with not only a high-hardness surface but also improved coaxiality of its stepped axis and thread trajectory accuracy. This significantly enhances the screw's operational stability at high speeds. Furthermore, through staged quality control and precision correction, it improves the first-pass yield of the workpiece and reduces the risk of scrap due to heat treatment deformation, possessing extremely high industrial application value.

The application relates to a processing method and a processing system for reducing the roughness of an inner hole, and the processing method comprises the following steps: S1, establishing a finite element model of contact between a rolling tool and a workpiece, wherein the rolling tool is provided with a roller, and the workpiece is provided with an inner hole; S2, performing a first simulation experiment to simulate the simulation roughness of the hole wall of the inner hole under different combinations of different interference amounts and different chamfer radii of the roller; S3, performing an offline experiment to measure the actual roughness of the hole wall of the inner hole of the workpiece under different combinations of different interference amounts and different chamfer radii of the roller, and the parameters of different interference amounts and different chamfer radii correspond to the same during the first simulation experiment and the offline experiment; S4, optimizing the finite element model based on the simulation roughness and the actual roughness; and S5, performing a second simulation experiment to simulate the simulation roughness of the hole wall of the inner hole under different combinations of different interference amounts and different chamfer radii of the roller.

This application relates to the field of solar cell technology, and more particularly to a solar cell and its fabrication method, and a photovoltaic module. The solar cell includes a silicon substrate, a patterned back-side doped layer, and a back-side passivation antireflection layer. The silicon substrate includes a back side and a front side disposed opposite to each other. The back-side doped layer is partially disposed on the back side, and the area where the back-side doped layer is disposed is a doped region. The area on the back side other than the doped region includes a back-side light-trapping region, which has multiple top-etched light-trapping structures, and the bottom surface of the light-trapping structures is located on the side closer to the front side. The back-side passivation antireflection layer is disposed on the side of the back-side doped layer facing away from the silicon substrate and on the back-side light-trapping region. The solar cell of this application utilizes top-etched light-trapping structures to enhance the back-side's ability to absorb and utilize light while also achieving a passivation effect, thereby effectively improving the performance of the solar cell.

The present application relates to the field of steel structure cutting, especially to a kind of building steel structure multifunctional laser cutting equipment.The building steel structure multifunctional laser cutting equipment of the present application is provided with laser cutting machine and flame cutting machine simultaneously, mainly through laser cutting machine to carry out laser cutting hollowing work on the surface of building steel structure, laser cutting and cutting work are carried out respectively on different regions of building steel structure using flame cutting machine and laser cutting machine, then laser cutting machine selectively carries out laser cutting and polishing work on the surface of building steel structure cutting groove protruding structure, which greatly reduces the surface roughness of building steel structure cutting groove.The technical problem that laser cutting machine is difficult to cut and cut the thicker area of building steel structure, and after cutting and cutting using flame cutting machine, the cutting groove surface of steel structure will be left with a large number of irregular protruding structures.

This invention discloses a method for forming hollow tubes based on low-shrinkage PEKK to achieve high-fidelity replication of the inner wall, belonging to the field of precision molding technology for high-performance thermoplastic polymers. The method includes the following steps: material selection, melt contact molding, inner wall morphology replication, shrinkage attachment control, rapid cooling and freezing, and demolding to obtain the finished product. This invention, through a series of structures and precise control of material shrinkage behavior, allows the inner wall morphology of the tube to directly replicate the surface of the mandrel. The roughness difference ΔRa between the inner wall of the tube and the surface of the mandrel is ≤0.3μm, truly achieving high-fidelity replication of the inner wall morphology and fundamentally solving the problem of large replication deviations in traditional molding processes.

The invention belongs to the technical field of semiconductor manufacturing, and particularly relates to a three-step wet chemical cleaning method for a gallium nitride single crystal substrate. The method comprises the following steps: pre-cleaning the surface of a GaN single crystal substrate, cleaning with concentrated sulfuric acid and hydrogen peroxide, and flushing with deionized water; soaking in a BOE solution and then washing with deionized water; soaking in a mixed solution of hydrochloric acid and hydrogen peroxide, washing with deionized water, and finally drying. According to the method, step-by-step targeted removal and synergistic interaction of different pollutants are realized through a specific three-step sequential cleaning method. The pre-cleaning step aims at removing large-size particles attached to the substrate in the machining and transporting process, a consistent starting point is provided for follow-up fine chemical cleaning, and macroscopic pollutants are prevented from interfering with chemical reactions or causing secondary pollution.

The invention relates to opaque quartz glass with high absorption in the near-infrared range and a production method thereof. The invention also relates to the use of the opaque quartz glass according to the invention or of the opaque quartz glass obtained from the method according to the invention in a processing chamber in which semiconductor wafers are processed.

The invention provides an E7 peptide functionalized polyimide fiber scaffold as well as a preparation method and application thereof, and relates to the technical field of medical treatment. The E7 peptide functionalized polyimide fiber scaffold provided by the invention comprises a polyimide fabric, the surface of the polyimide fabric is coated with a polydopamine coating; and the surface of the polydopamine coating is coupled with E7 peptide. According to the E7 peptide functionalized polyimide fiber scaffold provided by the invention, the E7 peptide is combined with the PI fabric, so that the E7 peptide functionalized polyimide fiber scaffold has excellent mechanical properties, thermal stability, surface hydrophilicity and biocompatibility. The BMSCs can be effectively recruited, and the osteogenic differentiation capability of the BMSCs can be enhanced. The scaffold provides a novel material selection with mechanical strength and biological activity for tissue engineering repair of MIRCT, and has clinical potential.

This invention provides a method for processing a silicon plasma shunt disk, belonging to the technical field of silicon components for chip etching, including the following steps: S1, grinding the silicon plasma shunt disk blank to reduce its thickness to the final product thickness +1-2mm, parallelism to 0.09-0.15mm, and flatness to 0.05-0.11mm; S2, machining positioning holes, small holes, and other features on the silicon plasma shunt disk blank; S3, flipping the silicon plasma shunt disk blank and machining the reverse side features; S4, performing double-sided LAP grinding on the silicon plasma shunt disk blank with the features completed; S5, etching the ground silicon plasma shunt disk blank with mixed acid; S6, polishing the etched silicon plasma shunt disk blank with a polishing machine. This invention first processes the features of the silicon plasma distribution disk, then performs double-sided LAP grinding to remove the tool marks generated during processing, and finally, after etching and polishing, the roughness of the polished surface is lower than Ra0.05.

The utility model belongs to blast furnace coal injection control valve field discloses a control integration wear -resisting corrosion -resisting valve for blast furnace coal injection uniform regulation and control. The utility model's ball surface is polished by mirror surface, so the surface is extremely smooth and erosion -resistant. When the valve is opened and closed, the ball will rotate 90 DEG, and this rotation changes the flow direction and produces scraping effect, and small coal powder adhered to the surface is entrained into the main stream. At the same time, the hard coating avoids burr or step due to abrasion, and keeps low roughness for a long time, so as to reduce the opportunity of powder retention from the source. The flow channel of the utility model through the ball adopts full diameter, equal diameter structure, and the inlet and outlet use round chamfer, and the turning radius is not less than three times of the pipe diameter. This smooth transition can eliminate the pressure drop and dead angle caused by sharp expansion and contraction, ensure that the high-speed gas-solid two-phase flow always flows along the wall without vortex deposition, thereby reducing the probability of particle residence in local.

The invention discloses an intelligent welding path planning method driven by welding wire width, which takes the welding wire width as a global unique driving parameter, intelligently links and dynamically generates a key threshold value and a strategy in the whole path planning process. The method specifically comprises the steps of generating a cutting threshold value, a de-weight tolerance, a waypoint de-weight tolerance and a continuous welding judgment threshold value based on the welding wire width; performing global endpoint cutting on the discretized path points analyzed from the DXF drawing based on the threshold value to eliminate interference; performing intersection point accurate detection of included angle filtering and neighborhood de-weighting; performing neighborhood order-preserving path point de-weighting optimization; and the three-section welding speed is dynamically configured and the continuous welding logic is judged based on the welding wire width. According to the method, the welding process parameter (welding wire width) depth is coupled to the path planning algorithm, full-link automatic intelligent optimization from drawing analysis to robot code generation is achieved, the welding quality, precision and efficiency are remarkably improved, and universality is high.

The invention discloses screw tap laser precision machining equipment based on visual measurement and multi-axis linkage, which comprises a base, a stand column is arranged on one side of the top end of the base, and the position and boundary dimension data of a machined screw tap blank can be provided for the equipment through a probe, an observation camera and a measurement camera, so that the screw tap blank can be precisely positioned; through the combined action of the X-axis linear driving mechanism, the Y-axis linear driving mechanism, the Z-axis linear driving mechanism, the longitudinal rotating motor and the transverse rotating motor, the screw tap blank can reach the position and angle required by machining, and complex movement during machining of the screw tap blank can be controlled. Instantaneous high-frequency impact calendaring is conducted on the groove wall which is still in a semi-molten state after laser material reduction machining through the calendaring device, the roughness of the surface of the groove wall is reduced in a forging and pressing mode every time laser machining operation is conducted, and the attachment foundation of microscopic melt can be eliminated; therefore, the problem of slag adhesion caused by melt adhesion and accumulation can be avoided to the greatest extent.

This invention belongs to the field of fiber material technology, and relates to a composite fiber containing nano-natural tea fiber, its preparation method, and its application. The raw materials for preparing the composite fiber include nano-natural tea fiber and basic fiber pulp, wherein the nano-natural tea fiber is a yerba mate nanofiber microemulsion. This invention integrates nanotechnology into the preparation of natural tea fiber. The microemulsion method allows for the simultaneous and uniform dispersion of multiple effective components from tea leaves in the yerba mate nanofiber microemulsion, effectively showcasing the multifunctionality of the fabric. The microemulsion system exhibits high uniformity and long-term stability, eliminating the need for additional surfactants during spinning to achieve high dispersion of the nano-tea fiber in the spinning solution, ensuring the long-lasting effectiveness of the resulting functional fabric. Furthermore, yerba mate contains abundant tea polyphenols and unique yerba mate alkaloids, which further enhance the overall performance of the composite fiber.

The application discloses a chemical mechanical polishing liquid and a polishing method for soft magnetic alloy. The polishing liquid is composed of the following raw material components in percentage by weight: 1.3wt%-1.8wt% of a chelating agent, 10wt%-13wt% of abrasive, 7wt%-9wt% of a pH buffer, 3wt%-3.5wt% of a corrosion inhibitor, 11wt%-13wt% of an oxidizing agent and the balance of deionized water. The abrasive is acidic silica sol, the oxidizing agent is hydrogen peroxide, the corrosion inhibitor is at least one of glycine, polyaspartic acid, glutamic acid and chitosan, the pH of the polishing liquid is 3-5, and the pH buffer is a citric acid-sodium citrate buffer. The polishing method comprises the following steps: grinding the soft magnetic alloy; performing chemical mechanical polishing rough polishing on the ground soft magnetic alloy by using a rough polishing slurry; performing chemical mechanical polishing fine polishing on the rough polished soft magnetic alloy by using the polishing liquid, so that the soft magnetic alloy with a smooth and flat surface is obtained. The polishing liquid is green, environment-friendly and pollution-free, and the surface of the soft magnetic alloy after polishing is smooth and flat.

This invention relates to the field of coating technology, and discloses a composite CVD coating, its preparation method, and its application. The coating comprises, from the inside out, a base layer, a first spacer layer, a first composite layer, and a second composite layer, arranged sequentially on the surface of a substrate. The first composite layer consists of a transition layer and a second spacer layer; the second composite layer consists of a third spacer layer and a surface layer; both the base layer and the surface layer are TiN; the first, second, and third spacers are MT-TiCN, κ-Al₂O₃, and TiC, respectively; the transition layer includes HT-TiCN and TiCO. The coating provided by this invention has good adhesion, strong resistance to crack propagation, and excellent overall coating quality; simultaneously, the coating particles are fine, and the surface roughness is low, which is more conducive to chip removal during processing.

The invention belongs to the technical field of semiconductor films, and relates to a visible-near infrared wide spectrum semiconductor transparent electrode and a preparation method thereof. The visible-near-infrared wide-spectrum semiconductor transparent electrode comprises a substrate and an indium tin oxide film formed on the substrate, the indium tin oxide film comprises In, O and Sn, and the film structure is a glass state indium tin oxide embedded In2O3 and SnO2 crystal particle network. The prepared indium tin oxide thin film is of a special structure that glassy state indium tin oxide is inlaid with an In2O3 and SnO2 crystal particle network, the scattering absorption of the thin film to near-infrared incident light is greatly reduced through the glassy state structure, and the average transmittance gt of the thin film in the visible to near-infrared band (380 nm to 2500 nm) is made to be gt; the In2O3 and SnO2 crystal particle network structure endows the material with good conductive characteristics, and the low resistivity of the material is lower than (lt: 10 <-3 > omega.cm).

The invention belongs to the technical field of semiconductor manufacturing, and particularly relates to a top anti-reflection coating composition and a preparation method and application thereof. The top anti-reflection coating composition comprises polymer resin, a photoacid generator and an organic solvent I; the polymer resin has a structure as shown in a formula (1). The key point of the invention is to design and synthesize a polymer resin with a specific structure, and through the synergistic effect of all unit structures in the polymer resin structure and regulation and control of all the unit structures in a specific proportion range, the surface of the formed top anti-reflection coating has excellent super-hydrophobic performance; the water infiltration defect in immersion photoetching is effectively inhibited, the developing contrast ratio is improved, the line edge roughness is reduced, and meanwhile it is ensured that the top anti-reflection coating has the excellent anti-reflection performance. Formula (1)

The application discloses a cord fabric unwinding and wrinkle removing device and a production method of an unwinding roller, and belongs to the technical field of cord fabric manufacturing. The unwinding and wrinkle removing device comprises an unwinding roller, a main hot moistening positioning roller and an auxiliary hot moistening pressing roller. Cord fabric on a cord fabric winding disc sequentially passes through the unwinding roller, the main hot moistening positioning roller and the auxiliary hot moistening pressing roller. The unwinding roller is used to apply a force to the cord fabric, so that the cord fabric is stretched along the width direction of the cord fabric. The main hot moistening positioning roller is used to moisten and fix the unwound cord fabric. The auxiliary hot moistening pressing roller is used to assist in moistening the cord fabric. The unwinding and wrinkle removing device integrates unwinding, setting and moistening. When the cord fabric is unwound, the unwound state can be fixed, and the cord fabric surface can be smoothed and wrinkle-free in time through moistening, so that the cord fabric is prevented from being stained with glue due to wrinkles.

This invention is a steel billet grinding process with a constant grinding wheel linear speed. First, the steel billet is automatically fed, positioned, and locked. A laser rangefinder detects the actual length of the steel billet and calibrates the grinding wheel to align with the billet's length center. Then, the grinding wheel is controlled to apply pressure and adhere to the steel billet, driving the billet to translate and complete the grinding of both sides. During the grinding stage at the billet's ends, the speed and pressure are automatically reduced to avoid over-grinding and sharpening at the ends. A trolley tilting mechanism rotates the billet 45° multiple times, cyclically grinding all sides and edges of the billet, using a repeated grinding method with decreasing feed depth to ensure grinding accuracy. Simultaneously, photoelectric switches on both sides of the grinding wheel monitor the wear on the outer circumference of the grinding wheel in real time, dynamically adjusting the grinding wheel motor speed to maintain a constant grinding linear speed, and simultaneously calibrating the distance between the grinding wheel and the billet to stabilize the grinding pressure. This invention effectively ensures uniform overall grinding quality of the steel billet and improves the grinding accuracy and stability of the billet's sides and edges.

The invention discloses a substrate structure and a substrate surface treatment method and device.The method comprises the steps that a transparent inorganic substrate is provided, and the roughness Ra of the to-be-treated surface of the substrate ranges from 0.1 micrometer to 20 micrometers; an energy absorption layer is at least formed on the to-be-treated surface of the substrate, the energy absorption layer completely covers the micro protrusions and the micro pits on the to-be-treated surface of the substrate, and the energy absorption coefficient of the energy absorption layer is larger than that of the substrate; ultra-short pulse laser is adopted to irradiate the substrate, so that phase explosion happens to the energy absorption layer, multi-photon absorption happens to the micro-protrusion area, and under the action of phase explosion and multi-photon absorption, the laser conducts cold cutting on the micro-protrusions; wherein the wavelength lambda of the ultrashort pulse laser ranges from n * Ra / 10 to n * Ra, and n is the refractive index of the substrate. According to the method, under the combined action of phase explosion and multi-photon absorption, the micro-protrusions are subjected to cold cutting through laser, so that the micro-protrusions on the surface to be treated are stripped, and the substrate structure is not damaged.