17 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 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.

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 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.

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 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.