24 results about "Micro roughness" patented technology

The invention discloses a welding wire production control system and method based on visual feedback, and belongs to the technical field of precision machining. The system comprises a multi-mode intelligent sensing subsystem, a self-adaptive model prediction controller and a safety and exception handling subsystem, and a two-stage control architecture of a quality closed loop and an execution closed loop is constructed. According to the method, the microcosmic roughness, macroscopic geometry, defects and other multi-dimensional quality characteristics of the surface of the welding wire are obtained in real time through multi-modal sensing and fused into a comprehensive quality index; carrying out rolling optimization by adopting a model prediction control algorithm for updating parameters on line, and generating a control instruction; meanwhile, trend early warning based on statistical process control and sudden fault diagnosis based on model residual analysis are operated in parallel, and active safety protection is achieved. According to the method, the problems of unstable quality, control lag and passive safety caused by supplied material fluctuation and tool time variation in the welding wire flaking machining process are solved, and self-adaptive accurate control and intelligent safety protection in the machining process are achieved.

The invention discloses a method for printing a two-dimensional structure of a thermosetting material with controllable surface roughness. The method comprises the following steps: regulating and controlling the rheological property of the extrusion behavior of the selected thermosetting material; calculating and determining the relationship between the deposition morphology of the thermosetting material and the printing parameters, and drawing an H-V phase diagram to determine a critical printing interval for realizing uniform deposition; establishing a single fiber deposition morphology evolution model and a multi-fiber fusion geometric evolution model, and providing a correlation corresponding relation for the fusion degree and the surface microscopic roughness of adjacent deposition fibers, so as to obtain a preset surface microstructure morphology; and according to the required surface roughness, the interface is cured and locked through thermocuring at different fusion stages, so that the thermoset material two-dimensional film with continuously adjustable roughness and a stable structure is obtained. According to the invention, two-dimensional structure printing of any thermosetting material system on any spreading substrate can be realized, and the surface roughness can be continuously and programmably adjusted.

The invention discloses an automotive interior metal part spraying process based on a high-adhesion water-based paint, which comprises the following steps: firstly, carrying out alkali washing and acid washing treatment on a metal part, so that the metal surface is clean and micro roughness is formed; then carrying out chemical conversion treatment by adopting a water-based conversion solution containing amino silane and epoxy silane to form a compact and uniform conversion film on the metal surface; then water-based prime coat is sprayed on the surface of the conversion film, the thickness of a dry film is controlled to be 3-8 microns, and good substrate binding force is provided after heating; the preparation method comprises the following steps: firstly, spraying a water-based finishing coat taking hydroxy acrylic resin as a main body, adding a blocked isocyanate cross-linking agent, uniformly coating through an electrostatic spraying process, and finally curing under a sectional heating condition to obtain a coating with excellent durability; according to the present invention, the adhesion between the water-based paint and the metal base material is effectively improved, the durability of the paint film in the damp and hot salt mist environment is improved, the use of the organic solvent is reduced, and the advantages of environmental protection, low VOC emission and suitableness for industrial large-scale production are provided.

Method for producing a workpiece (64) made of quartz glass, which has at least one melt-polished workpiece surface (113) for use in a plasma-assisted manufacturing process, comprising the process steps: a) Providing a workpiece (64) made of quartz glass which has at least one raw surface (111) produced by cutting or machining, and b) Polishing the raw surface (111) to the polished workpiece surface (113) by laser polishing using at least one laser beam (81) moving relative to the raw surface (111), wherein the relative movement is generated by superimposing a translational-oscillating movement and a feed movement, wherein, as a result of the translational-oscillating movement, a quasi-line (87) is generated by a relative velocity between the raw surface (111) and the laser beam (81) above 500 mm / s, and wherein the feed movement has a relative velocity between the raw surface (111) and the laser beam (81) between 1 mm / s and 50 mm / s, c) and wherein a polished workpiece surface (113) is produced which has a micro-roughness and waviness, wherein the white light interferometry at a spatial wavelength λ OMicroroughness measured in the range of 1 µm to 10 µm has a surface roughness Sa of less than 0.5 nm, characterized in that the measurement is taken by means of a white light interferometer at a spatial wavelength in the range λ O Surface roughness (waviness) measured from 100 µm to 1000 µm has a value Sa of more than 5 nm, where the quasi-line (87) has a radiation intensity within the quasi-line (87) on the workpiece (64) between 10 W / cm² 2 and 1000 W / cm² 2 is produced wherein, for laser polishing of an annular end face (80) of a hollow cylindrical workpiece (64), the feed movement comprises rotation of the end face (80) about the longitudinal axis (84), and the translational-oscillating movement comprises a reversing movement of the laser beam (81) between an inner workpiece surface (85) and an outer workpiece surface (86), and wherein the speed of the translational-oscillating movement is set higher in the region of the inner surface (85) than in the region of the outer surface (86).

The invention discloses a PCB surface treatment process based on local gold plating and nickel and gold immersion, and relates to the technical field of surface treatment processes. The method is used for processing a PCB which needs local hard gold plating and nickel gold immersion at other positions, and comprises the following steps: S1, pre-processing: processing the PCB to a copper thickness before electroplating; s2, first-layer pattern processing: pasting a dry film on the CS surface of the PCB and etching to form a pattern; s3, gold plating preparation; s4, local gold plating; s5, removing the film and processing a second layer of pattern; s6, removing the wire; s7, resistance welding and protection; and S8, nickel and gold immersion treatment. According to the surface treatment process, the microcosmic roughness of the surface of the substrate is accurately controlled through multi-step pretreatment, and high-pressure water washing and plasma cleaning are combined, so that the mechanical embedding force of a plating layer and a copper layer is ensured, and the problem that the plating layer is not uniform due to too large roughness is avoided. And meanwhile, the current distribution is regulated and controlled by adopting pulse current and a magnetic mask in the copper deposition and electroplating stages, so that the compactness and thickness uniformity of the coating are improved.

The invention relates to the technical field of surface treatment, in particular to a laminated dimensional coating for prolonging the service life and improving the reliability of the inner surface of a cylinder sleeve and a preparation method thereof. The honing technology is adopted for machining the honing lines which are crossed in the transverse dimension and the longitudinal dimension on the surface of the cylinder sleeve, the micro roughness of a micro platform and the honing lines is reduced through sand blasting treatment, and the inner surface of the cylinder sleeve is subjected to nitriding treatment through the plasma nitriding technology; the Si layer, the Si-C transition layer and the Si / DLC-based solid lubricating film are injected into a tiny platform and honing lines of the cylinder sleeve through the plasma chemical vapor deposition technology. Through the steps, the multi-dimensional and multi-layer superposed dimensional coating is constructed in the tiny platform and the honing lines on the surface of the cylinder sleeve, the reliability of the cylinder sleeve can be improved in a multi-dimensional and multi-layer mode, and the service life of the cylinder sleeve can be prolonged in a multi-dimensional and multi-layer mode.

This invention discloses a method for printing two-dimensional structures of thermosetting materials with controllable surface roughness, comprising: controlling the rheological properties of the extrusion behavior of a selected thermosetting material; calculating and determining the relationship between the deposition morphology of the thermosetting material and printing parameters, and plotting an H-V phase diagram to determine the critical printing range for achieving uniform deposition; establishing a single-fiber deposition morphology evolution model and a multi-fiber fusion geometric evolution model to provide a correlation between the degree of fusion of adjacent deposited fibers and the surface micro-roughness, thereby obtaining a preset surface microstructure morphology; and, according to the required surface roughness, solidifying and locking the interface through thermal curing at different fusion stages to obtain a continuously adjustable and structurally stable two-dimensional film of thermosetting material. This invention can realize the printing of two-dimensional structures of any thermosetting material system on any spread substrate, and can continuously and programmably adjust the surface roughness.

contact surface, wherein an electrochemically deposited dispersion silver layer is arranged on a substrate, wherein the dispersion silver layer contains particles of at least one finely dispersed solid component with a mean particle size (d 50 ) from 10nm - 100µm; wherein the dispersion silver layer contains at least one finely dispersed solid component in a quantity range of 0.5 wt.% to 10 wt.% based on the total weight of the dispersion silver layer; and wherein the contact surface has a microroughness, described by the mean roughness Ra, in the range of 0.05 µm to 20 µm.

The application relates to a method for preparing an asymmetric wetting Janus material by diffusion welding, and relates to a method for preparing an asymmetric wetting Janus material.The application aims to solve the technical problems of the existing Janus material preparation process, such as complexity, small application range and poor mechanical stability.In step one of the application, a porous matrix is connected with a Ti net through diffusion, Ti has high activity at high temperature, can react with and diffuse in different metals or non-metals, and realizes stable connection;in step two of the application, nano structures can be selectively grown on the surface of the porous matrix and the Ti net through a hydrothermal method, so that the micro-roughness of the material is increased; on the other hand, the Ti net is affected by Na + During the hydrothermal process, the Ti net is still hydrophilic after being soaked in an ethyl alcohol stearic acid solution, while the porous matrix side is modified to be hydrophobic, so that the Janus material with asymmetric wetting can be obtained.

The invention discloses a color holographic heat transfer film and a preparation process thereof, and relates to the technical field of transfer film preparation, the color holographic heat transfer film comprises a transfer film main body, the transfer film main body comprises a holographic layer, a transparent layer and a transparent layer from top to bottom in sequence, and the holographic layer is formed by compounding holographic resin and a holographic micro-nano structure material; the color layer is formed by mixing an organic pigment and an inorganic pigment; the heat transfer printing adhesive layer is composed of a hot melt adhesive and a cross-linking agent; the transfer printing film continuously penetrates through the treatment groove along a main shaft-guide shaft path, the clamping shaft is driven by the adjusting bolt to form an adjustable gap with the main shaft, it is ensured that the film surface tension is constant, the film surface is in full contact with treatment liquid, and uniform coarsening is achieved; according to the process, the uniformity of the treatment liquid is continuously kept during operation, stable microcosmic roughness is given to the film surface, adhesion of the pigment and the adhesive layer is remarkably enhanced, and the problems of pattern falling, edge warping and optical performance reduction are thoroughly solved.

The invention provides a metal shell, a preparation method thereof and electronic equipment, and is applied to the technical field of surface treatment.The method comprises the steps that sand blasting treatment is conducted on the surface of a metal base material, laser carving treatment is conducted on the base material according to a target pattern, and different laser parameters are set for different sub-areas in the pattern, so that the target pattern is obtained; differential microscopic roughness is formed in each sub-region; then chemical polishing is carried out, so that the surface smoothness is improved, and the gloss contrast is enhanced; and finally, anodic oxidation treatment is conducted to solidify the texture and conduct coloring, and the metal shell with the target pattern is obtained. Based on the scheme, the problems of tedious steps, low efficiency, poor pattern precision and low yield of a traditional process are solved, and efficient customized pattern preparation is realized.

The invention relates to a composite current collector and a preparation method thereof. The composite current collector comprises a base material layer and a conductive layer. The conductive layer at least comprises a first crystal grain layer and a second crystal grain layer, the first crystal grain layer is arranged between the second crystal grain layer and the base material layer and is connected with the base material layer, the average size of crystal grains of the first crystal grain layer is 150-1300 nm, and the ratio of the average size of the second crystal grain layer to the average size of crystal grains of the first crystal grain layer is (1.5-10): 1. Under the action of stress and heat of battery circulation, the structure can obviously inhibit the growth trend of crystal grains, especially the transmission of a coarsening phenomenon to an interface, so that the microscopic roughness and mechanical interlocking capability of the surface of the conductive layer are maintained for a long time, the reduction of peeling strength is delayed, and the service life of the conductive layer is prolonged. And the structural integrity and reliability of the current collector in long-term circulation are improved.

A process for forming silver-containing wettable material structures, wherein, on a metal layer containing aluminum, a zinc layer is deposited, the zinc layer reacting with the metal layer and creating a surface micro-roughness; the zinc layer is removed; and a wettable layer containing silver is deposited by vapor deposition. The wettable layer is formed by an adhesion layer, containing titanium or chromium; a barrier layer, containing nickel, on the adhesion layer; and a bonding layer, containing silver, on the barrier layer.

The invention discloses a high-strength heat-sealing type composite packaging film for cigarettes, which relates to the technical field of packaging materials and comprises three layers of structures which are sequentially compounded: a first layer of ORP (oxidation-reduction potential) film with the thickness of 15-25 microns and the surface coated with a single-sided acrylic acid coating with the thickness of 3-5 microns, a second layer of ORP film with the thickness of 3-5 microns, and a third layer of ORP film with the thickness of 3-5 microns, and the thickness of the second layer of aluminum foil is 5-10 [mu] m, one surface is a matte surface, and the other surface is a bright surface. The three-layer composite structure is arranged, the first layer of ORP film provides a printing face and an anti-puncture supporting layer, the coating face is combined with the bright face of the aluminum foil through dry lamination 1, and initial bonding is achieved through the microscopic roughness of the bright face. The second layer of aluminum foil serves as a core barrier layer, the matte surface of the second layer of aluminum foil is combined with the non-coating surface of the third layer of ORP film through dry lamination 2, mechanical occlusion is enhanced through the matte surface concave-convex structure, the peel strength is improved compared with a traditional process, the third layer of ORP film balances the thermal shrinkage rate of the overall structure, curling caused by shrinkage difference of the aluminum foil and the ORP film is prevented, and meanwhile a heat sealing functional surface is provided.

The invention discloses a composite film material for probe card cleaning and a preparation method thereof, and belongs to the technical field of probe card cleaning, and the composite film material comprises a bonding layer, a cushion layer and a functional layer which are stacked in sequence; the tight connection between the composite film material and the substrate is realized through the bonding layer, the cushion layer particles are added in the cushion layer, the first microstructure with macroscopic roughness is formed on the surface of the cushion layer, the functional layer particles with relatively small particle size are added in the functional layer, and the microcosmic roughness is formed on the surface of the functional layer. By means of the synergistic effect of the two different kinds of roughness, efficient removal of pollutants of different sizes is achieved, the cleaning efficiency and adaptability are remarkably improved, meanwhile, by controlling the particle size of particles in each layer, the cleaning effect is guaranteed, and meanwhile the cleaning effect is improved. Therefore, the tip structure of the probe is prevented from being damaged, the probe can be ground and polished, and the service life of the probe is effectively prolonged.

The invention relates to the field of wear-resistant materials, in particular to a PP matte wear-resistant surface material and a preparation method thereof.The PP matte wear-resistant surface material is prepared from, by weight, 80 parts of PP resin, 5-20 parts of filler, 1-10 parts of extinction material, 1-3 parts of light stabilizer, 0.3-0.9 part of zinc stearate, 1-1.5 parts of coupling agent and 1-3 parts of coloring agent; the filler comprises at least one of silica fume powder, talcum powder and aluminum oxide. The PP resin provides basic support, the matt material and the filler are matched, the matt material directly reduces the surface gloss, irregular particles of the filler can increase the surface microscopic roughness and further scatter light, the surface gloss of the material is low and uniform, the ideal matte texture is achieved, and in addition, the surface gloss of the material is improved. Due to the existence of the filler, the hardness of the material surface can be remarkably improved, the abrasion of the PP matrix in the friction process is reduced, and the abrasion resistance of the PP matte abrasion-resistant surface material is improved, so that the abrasion resistance of the automobile window outer water cut is improved.

The invention discloses a non-stationary corrosion pipeline random field generation method for trend texture reconstruction, and relates to the field of steel pipe corrosion morphology modeling. The method comprises the following steps: firstly, carrying out three-dimensional scanning and filtering processing on a real corrosion pipeline to obtain a pure corrosion height field, and decoupling the pure corrosion height field into a macroscopic non-stationary trend field and a microscopic stationary texture field; thirdly, constructing a mapping relation database of microscopic roughness parameters and power spectral density, and generating a simulated stationary texture field by using a conditional diffusion model; meanwhile, parametric modeling is carried out on the target trend field by adopting an analytic function; determining a modulation coefficient, and performing amplitude modulation and space reconstruction on the target trend field and the simulated stationary texture field; and finally, reversely deriving an optimal trend control parameter based on a constraint genetic algorithm, and generating a final non-stationary corrosion pipeline random field. According to the method, through decoupling and reconstruction of the trend and the texture, the problem that corrosion non-stability cannot be simulated in the prior art is solved, and an accurate data basis is provided for integrity evaluation of the pipeline structure.

The application provides a surface treatment method and device for a semiconductor wafer, the surface treatment method comprising: selecting a treatment fluid according to the difference between the initial haze value and the target haze value of the surface of the semiconductor wafer to be treated; and applying the selected treatment fluid to the surface to adjust the micro-roughness of the surface so that the actual haze value of the surface is adjusted to the target haze value. By dynamically selecting a cleaning medium combination and accurately adjusting process parameters, a quantitative correlation between haze and parameters can be established, bidirectional and controllable adjustment of haze can be realized, the low haze requirement of advanced process devices can be met, and controlled high haze with suitable gettering function can be provided for power devices, and process consistency between batches can be improved.

The application belongs to the technical field of semiconductor materials, and discloses a method for reducing the silicon impurity concentration on the surface of an indium phosphide wafer. The method comprises the following steps: rough polishing of the indium phosphide wafer, then fine polishing of the indium phosphide wafer by using a fine polishing liquid; cleaning and drying of the indium phosphide wafer after fine polishing, and then treatment of the indium phosphide wafer by using a mixed weak acid; the fine polishing liquid comprises tripolyphosphate, thiosulfate, bicarbonate and citric acid; and the mixed weak acid comprises HF acid, NH4F and H2O2. The fine polishing liquid does not contain SiO2, and by adding citric acid in the fine polishing liquid, the chemical reaction between the indium phosphide wafer and the polishing liquid is enhanced, and in the subsequent cleaning process, the corrosion effect of the mixed weak acid is combined, so that the residual Si impurities and other impurities on the surface of the indium phosphide wafer can be reduced, the micro-roughness of the indium phosphide wafer can be effectively reduced, and the surface flatness and uniformity can be improved.

Provided is a sample surface quality management device that measures a micro roughness of a sample. The sample surface quality management device includes: a scattered light measurement device that measures scattered light generated on the sample; an interference light measurement device that measures interference light including reflected light generated on the sample; and a signal processing device that processes signals of the scattered light measurement device and the interference light measurement device. The signal processing device calculates a first evaluation value of the micro roughness of the sample based on the signal of the interference light measurement device, calculates a scattering characteristic signal based on the signal of the scattered light measurement device, and calculates, for a spatial frequency band for which the first evaluation value is not calculated, a second evaluation value of the micro roughness based on the first evaluation value and the scattering characteristic signal.

The application discloses a kind of online evaluation method of rail repair precision, including steps 1: calculating profile dynamic adaptation DPA;Step 2: calculating disease residual correction DRC;Step 3: calculating surface roughness standard degree SRC;Step 4: calculating polishing quality uniformity GUI;Step 5: calculating rail polishing quality comprehensive evaluation index CGQI, the present application fuses profile dynamic adaptation, disease residual correction, surface roughness standard, polishing uniformity these four dimensions, forms comprehensive evaluation system (CGQI), based on rail basic parameters and the contact pressure deduced based on Hertz contact theory, combined with laser profile measurement deviation, realize the dynamic evaluation of "the greater the contact pressure, the higher the deviation influence weight", it is in line with actual service working condition;Supplement microelement area division, profile alignment reference, deviation limit and other key rules, solve engineering landing pain points;Give consideration to macro profile, residual disease, micro roughness, polishing uniformity, more comprehensive evaluation.

The invention relates to a broken bridge aluminum profile surface anti-corrosion coating technology for a curtain wall, a broken bridge aluminum profile and a building curtain wall system, and belongs to the technical field of building curtain wall materials, the broken bridge aluminum profile surface anti-corrosion coating technology comprises the following steps that S1, surface pretreatment is conducted, specifically, an alkaline cleaning agent and ultrasonic-assisted cleaning are adopted, and micro roughness is formed in combination with sand blasting treatment; s2, chromium-free conversion film treatment: immersing into zirconium-titanium salt chromium-free conversion liquid to form a dense film; s3, coating a nano modified priming coat, and spraying nano ceramic particle modified epoxy resin; s4, coating of a floating coat: coating of a flexible polyester floating coat; s5, coating a fluorocarbon surface coating, and electrostatically spraying the PVDF fluorocarbon surface coating; s6, staged gradient curing is conducted; and S7, performing performance inspection and defect repair. The process improves the binding force and the corrosion resistance of the coating, avoids the harm of chromate, is suitable for a building curtain wall system, and improves the durability and the environmental protection property of the profile.

The application provides a mixed lubrication gear meshing actual contact area calculation method, comprising the following steps: S1, measuring the profile height of the gear tooth surface, calculating the static meshing force of the gear tooth according to the external load condition of the gear, and taking the normal load of the mixed lubrication system as the external normal load, which is borne by the solid part and the liquid part; S2, constructing an explicit function relationship between the solid contact force and the maximum contact area of the micro roughness peak; S3, deducing the equivalent thickness expression of the lubricating oil film, and establishing a function relationship between the liquid contact force and the maximum contact area of the roughness peak; S4, solving the normal load borne by the solid part, the liquid part and the maximum contact area of the roughness peak by simultaneously solving the above three equations, and calculating the dimensionless actual contact area of the tooth surface corresponding to different meshing forces under the mixed lubrication state. The application solves the problems of a large number of cyclic iteration calculations and the inability to reflect the dynamic change of the oil film thickness in the gear meshing process in the existing theoretical method.