462 results about "Surface roughening" patented technology

The invention relates to a preparation method of a geopolymer composite material based on modified fiber, which comprises the following steps: S1, fiber pretreatment: the fiber is one of basalt fiber and polyformaldehyde fiber; s2, performing surface roughening treatment on the fibers through a polyvinyl alcohol modified impregnating compound to obtain roughened fibers; s3, the roughened fibers are subjected to surface functional modification treatment through a functional modified impregnating compound, and functional modified fibers are prepared; s4, uniformly mixing the powder and an expanding agent according to a mass ratio, and adding an alkali activator solution and the functional modified fibers to prepare a geopolymer gel material; s5, the geopolymer gel material is subjected to stirring, mold filling, steam curing forming, demolding and continuous curing, and the geopolymer composite material based on the modified fiber is obtained.According to the preparation method, the geopolymer composite material with high strength and excellent crack resistance and toughness is obtained through alkali excitation, and the problems that geopolymers are low in toughness and large in brittleness are effectively solved.

The invention discloses a post-treatment system and process for PBF printing plastic parts, and the post-treatment system comprises a solvent storage bottle, a part treatment assembly and a solvent recovery assembly; a solvent is stored in the solvent storage bottle; the part processing assembly is used for carrying out fairing treatment on the PBF printing plastic part; the solvent recovery assembly is used for recovering the vaporized solvent in the part treatment assembly and re-liquefying and storing the vaporized solvent; the output end of the solvent storage bottle is connected with the input end of a solvent cabin of the part treatment assembly through a peristaltic pump, and the part treatment assembly is connected with the solvent recovery assembly through a recovery valve. According to the principle that the solvent is rapidly vaporized under the pressure difference, then uniformly reaches any surface position of the workpiece and is condensed and liquefied again, the surface defects of the workpiece are gradually dissolved and leveled under the action of the solvent, then the solvent steam is liquefied and recovered again, and the residual solvent on the surface of the workpiece is removed. The common surface roughness problem of the 3D printing plastic part can be effectively improved, and the appearance quality of the part is improved.

The invention discloses a Micro-LED light extraction structure, which relates to the field of photoelectricity and comprises first glass for bearing the light extraction structure, a photoresist curing film layer which is arranged on the first surface of the first glass structure and is imprinted and cured by a PDMS template, and a micro lens array arranged on the second surface of the first glass structure, and the surface of the micro-lens array is matched with the PDMS template to be subjected to surface roughening through a nanoimprint process. Meanwhile, the invention further discloses a preparation method of the Micro-LED light extraction structure. According to the invention, a set of PDMS template is adopted to respectively carry out roughening treatment on the glass surface and impressing transfer roughening treatment on the lens surface, so that the light emitting rate is improved, and the light extraction rate of the whole Micro-LED is effectively improved.

The invention relates to pretreatment reinforced recycled aggregate concrete and a preparation method thereof. The pretreatment reinforced recycled aggregate concrete comprises the following raw materials: 320-360 parts of cement; 20 to 40 parts of fly ash; 80 to 120 parts of mineral powder; 585 to 670 parts of machine-made sand; 1050 to 1200 parts of recycled coarse aggregate; 156 to 172 parts of water; and 11-12.3 parts of an additive. After the recycled coarse aggregate is pretreated, the performance of the concrete prepared from the recycled coarse aggregate is remarkably improved compared with that of the concrete prepared from the recycled coarse aggregate before pretreatment, and the synergistic effect of multiple pretreatment modes has an obvious improvement effect on the water absorption rate, the crushing index and the apparent density of the raw coarse aggregate; the pretreated recycled coarse aggregate provides a gain condition for internal hydration of the recycled concrete, and meanwhile, the problem that the surface of the recycled coarse aggregate is rough is solved, so that the workability of the concrete is enhanced, and the strength of the concrete is improved.

The invention relates to the technical field of concrete strength detection, in particular to a concrete strength detection method and device for construction, and the method comprises the following steps: collecting surface humidity information, rebound strength, core drilling strength and concrete surface gray level images of each concrete test piece; obtaining the rebound drill core strength difference of each concrete test piece; acquiring a humidity influence strength coefficient; obtaining the average distribution density of pits of the concrete surface gray level image of each concrete test piece; obtaining a pit distribution uniformity coefficient of each concrete test piece; the surface roughness of the concrete is obtained; obtaining concrete strength influence coefficients of all the concrete test pieces; and improving a distance formula of a clustering algorithm based on the concrete strength influence coefficient and the humidity influence strength coefficient, and correcting the rebound strength of all the concrete test pieces. The detection precision of the concrete strength is improved.

The invention discloses a compression test clamping tool, system and method for a variable-thickness beveled laminated plate composite material, and relates to the technical field of aviation composite material mechanical property testing. The first long chuck and the second long chuck are respectively mounted on a variable-thickness side and an equal-thickness side of the beveled laminated plate sample, and the first long chuck mounted on the variable-thickness side is gradually thickened on a conical beveled layer and a thin section of the beveled laminated plate sample. According to the invention, the additional bending moment caused by eccentricity of a neutral shaft is effectively inhibited through the gradually-changed thickening design of the variable-thickness side long chuck in cooperation with gap control, and active inhibition of buckling instability of a beveling area is realized in combination with rigid fixation and surface roughening treatment of the short chuck; the method has the advantages that buckling instability is restrained, a failure area is accurately positioned, and samples of different configurations are adapted.

The invention discloses a high-filling type II anhydrite polyethylene composite packaging material and a preparation method thereof, and belongs to the technical field of plastic packaging materials. The composite material comprises modified gypsum which is coated by nano SiO2 and is synergistically modified by double coupling agents, and polyethylene serving as a base material, wherein the addition amount of the modified gypsum is 60%; a gradient temperature control twin-screw extruder is adopted for processing, during extrusion processing, the front-section temperature is 155-165 DEG C, the middle-section temperature is 185-195 DEG C, the rear-section temperature is 205-215 DEG C, and a gradient filler distribution material is formed after extrusion; the problems that under the condition of 60% high doping, II type anhydrite is difficult to disperse in a polyethylene base material, and under the condition of high doping, the material surface is rough are solved.

The invention provides a method for plating an insulating ceramic coating on the surface of a copper / diamond composite material, and relates to the technical field of composite material surface insulating treatment. The method comprises the steps that surface pretreatment is conducted, specifically, the surface of a substrate made of the high-thermal-conductivity copper / diamond composite material is pretreated, and the substrate with the clean surface is obtained; carrying out surface sand blasting treatment: carrying out ceramic particle sand blasting treatment on the substrate with the clean surface to obtain a substrate with a rough surface; and plating an insulating ceramic coating: depositing the ceramic powder subjected to ball milling treatment on a substrate with a rough surface through an aerosol nozzle by virtue of an aerosol deposition device, so as to obtain the substrate with the insulating ceramic coating. According to the method, the copper / diamond composite material with the insulating coating is prepared through surface pretreatment, surface sand blasting treatment and plating of the insulating ceramic coating, wherein the copper / diamond composite material is uniform in component distribution, uniform in performance and capable of improving thermal conductivity and electrical resistivity synergistically; the method is simple and easy to operate, low in cost, short in process, high in efficiency and beneficial to industrial large-scale production and popularization.

The invention discloses a chip-embedded TGV glass substrate and a manufacturing method thereof. The method comprises the following steps: providing a glass core plate; forming a temporary metal mask layer on the first surface of the glass core plate; performing pattern transfer and etching on the temporary metal mask layer; performing dry etching on the glass core plate in the second pattern area to form a first TGV hole; etching the glass core plate in the first pattern area and the second pattern area through a dry method to form a second TGV hole and deepen the depth of the first TGV hole; removing the temporary metal mask layer, performing metallization to form a first conductive through hole and a second conductive through hole, and manufacturing a first rewiring layer; grinding the second surface of the glass core plate until the first conductive through hole is exposed; etching the glass core plate through a dry method to form a cavity until the second conductive through hole is exposed; providing a chip, and embedding the chip into the cavity; therefore, no-damage cavity processing is realized, and the problems of surface damage, dimensional deviation, lateral erosion, microcracks or surface roughening and the like of the substrate are effectively avoided.

The invention provides a ceramic flat sheet membrane end seal bonding surface roughening treatment device, and relates to the technical field of flat sheet ceramic membrane manufacturing, the ceramic flat sheet membrane end seal bonding surface roughening treatment device comprises a fixing plate, two grooves are formed in the outer wall of the fixing plate, connecting rods are slidably connected to the positions, corresponding to the grooves, of the outer wall of the fixing plate, and fixers are fixedly connected to the outer walls of the connecting rods; a pressure sensor is installed on the outer wall of the bottom end of the fixator, supporting plates are fixedly connected to the outer walls of the two sides of the fixing plate, adjusters are installed on the outer walls of the supporting plates, adjusting rods are fixedly connected to the outer walls of the adjusters, and a plurality of threaded holes are formed in the outer walls of the adjusting rods. According to the device, the groove structure of the continuous sinusoidal waveform structure similar to the gecko sole line is adopted, the binding force between the polymer and the plastic end seal can be improved to a great extent, the pressure sensor and other structures are additionally arranged, the machining state of the device can be detected in real time, and therefore the practicability of the device is higher.

This invention relates to a method for surface roughening of high-end copper foil for electronic circuits, comprising the following steps: sequentially performing acid washing, roughening, blackening, ashing, passivation, and coupling agent coating on raw copper foil, with water washing steps interspersed between these steps, and finally drying and winding. The method is characterized in that the roughening step uses an alkaline plating solution containing copper pyrophosphate. This invention provides an alkaline plating solution for alkaline roughening of raw copper foil, generating grains with lower roughness on the already extremely thin surface of high-end copper foil. The grain size is between 0.02 and 0.1 micrometers. After deposition on the raw foil, the surface roughness of the finished foil increases by approximately 0.2 to 0.3 micrometers, ensuring that the surface roughness of the final product meets the requirements of high-end copper foil while maintaining peel strength.

The invention discloses a method for eliminating rough stripes on the surface of a duplex stainless steel cold plate, which comprises the following steps: the interval time from the end of cutting of a duplex stainless steel casting blank to the beginning of coping is more than or equal to 48 hours, and the surface temperature of the casting blank before coping is less than or equal to 80 DEG C; the surface of the casting blank is ground for the first time through a 20 # grinding wheel, the opening degree of a screw-down valve of a hydraulic machine ranges from 50% to 70%, the current of a grinding machine ranges from 30 A to 50 A, the stepping of the grinding wheel ranges from 25 mm to 35 mm, and the moving speed of a grinding trolley ranges from 35 m / min to 45 m / min; a 36 # grinding wheel is used for grinding the surface of the casting blank for the second time and the third time, the opening degree of a screw-down valve of the hydraulic machine is 30-50%, the current of the grinding machine is 10-30 A, the stepping of the grinding wheel is 15-25 mm, and the moving speed of the grinding trolley is 25-35 m / min. According to the method, the surface of the casting blank is ground before hot continuous rolling, the surface roughness of the casting blank is reduced, after the ground casting blank is subjected to hot rolling, the thickness of iron and phosphorus on the surface of the plate is basically consistent, the iron and phosphorus can be completely removed after phosphorus removal, macroscopic chromatic aberration is eliminated on the surface of the cold-rolled plate, and therefore rough stripes on the surface of the duplex stainless steel cold plate are eliminated.

The invention relates to the technical field of image processing, and provides a pipe fitting stretching surface feature extraction method, which comprises the following steps: obtaining a surface image of a pipe fitting stretching surface, and obtaining an initial edge image of the pipe fitting stretching surface through edge detection; quantifying the surface concavity and convexity of the stretching surface of the pipe fitting based on the pixel gradient difference expression of the stretching surface of the pipe fitting; combining the spectrogram width of the initial edge image and the amplitude fluctuation condition of the high-frequency component to obtain the surface roughness influence degree of the stretching surface of the pipe fitting; the glossiness difference of all pixel points of the pipe fitting stretching surface is analyzed, and the surface flatness degree of the pipe fitting stretching surface is obtained; obtaining the surface roughness scattering degree of the stretching surface of the pipe fitting; edge continuity of edge detection is determined, and final optimization parameters of edge detection are obtained; and obtaining a final edge image, and carrying out feature extraction on the pipe fitting stretching surface based on the edge expression in the final edge image. The invention aims to solve the problem of feature loss caused by incapability of accurate extraction due to surface quality interference in a pipe fitting stretching surface feature extraction process.

The invention relates to the technical field of anti-skid preparations, in particular to an environment-friendly stain-resistant anti-skid preparation and a preparation method thereof.The calcium carbonate is modified through sodium stearate, the adhesive force between the calcium carbonate and a base material can be improved, and meanwhile the surface roughness of a material is improved; the dispersity and the stability of the coating in water can be improved, and meanwhile, the binding force of the coating and a base material is enhanced; the modified titanium dioxide, the modified calcium carbonate and the modified fly ash are added into the base liquid component, so that the surface roughness of the material can be improved, and the anti-skid performance of the material is improved; the main components of the preparation, such as the polyurethane, the waterborne epoxy resin, the modified titanium dioxide, the modified calcium carbonate and the modified fly ash, are all environment-friendly materials and are environment-friendly, so that the pollution to the environment is reduced to a certain extent.

The utility model discloses a split type mold for vacuum centrifugal casting, which comprises a lower mold body and is characterized in that the lower mold body comprises an outer mold part and an inner mold part which are arranged in a split type, and the outer mold part is movably mounted on the inner mold part; the inner die piece comprises a lower die base and an inner die installed on the lower die base. According to the utility model, the lower mold body is arranged in a split manner and is divided into the outer mold piece and the inner mold piece, so that when a rotor iron core and the inner mold body are demolded, multi-time demolding and single-time and single-side demolding can be carried out, the thrust during demolding is reduced, and the demolding efficiency is improved. And meanwhile, galling on the surface of the rotor iron core due to the fact that inner and outer demolding is completed at a time by strong force is avoided.

A magnetic roller shell surface roughening processing technology relates to the technical field of magnetic roller metal surface processing for printers and the like, a magnetic polishing machine is adopted, a polishing groove is formed in the magnetic polishing machine, partitions are arranged in the polishing groove to divide the polishing groove into N cells, the cells are used for placing collision materials and a magnetic roller shell, medium water is placed in the polishing groove, and the magnetic roller shell is placed in the medium water. The collision material is driven by the magnetic field to collide the surface of the magnetic roller shell in medium water to form a pit, and the magnetic roller shell is collided to rotate, so that the whole outer surface of the magnetic roller shell can be collided; and the pits which are impacted by the collision material for multiple times are overlapped in a staggered manner to realize the surface roughening treatment of the magnetic roller shell. Therefore, the overall abrasive resistance of the magnetic roller shell is improved, the conductivity is improved, the negative direct current bias overload phenomenon is reduced, the drum core is better protected, and the carbon powder consumption is reduced.

The invention belongs to the technical field of barreling finishing machining, particularly relates to a barreling finishing machining method combined with a digital twinborn simulation technology, and solves the problems that an existing barreling finishing machining technology is difficult in real-time state monitoring, debugging of technological parameters needs to consume a large amount of time, existing analog simulation can only obtain the surface stress condition of a machined workpiece, and the machining precision is poor. The method comprises the following steps: establishing a digital twinborn model of a machined workpiece and a digital twinborn model of barreling finishing machining equipment, and carrying out simulation analysis on the barreling finishing machining process of the machined workpiece by utilizing an EDEM discrete element method and an ANSYS finite element method. Constructing a surface roughness cloud picture of the processed workpiece according to the coordinates of the surface roughness points obtained by simulation, and updating a digital twin model of the processed workpiece in real time by utilizing the surface roughness cloud picture; and the Bayesian algorithm is utilized to continuously reduce errors between analog simulation data and actual experimental data, and the surface quality of the workpiece in the machining process is predicted in real time.

The CVD diamond optical grinding process comprises the following steps that S1, surface cleaning is conducted on a selected diamond workpiece to be ground, and grinding discs with different grinding coefficients are selected, S2, the grinding stage is divided into the rough grinding stage and the fine grinding stage, the grinding disc with the finer surface roughness degree is replaced after rough grinding, and the grinding disc with the finer surface roughness degree is replaced after fine grinding. S3, according to the thickness of the diamond, the heights of a plurality of grinding heads are adjusted to adapt to the diamonds with different thicknesses, a first grinding motor and a second grinding motor are started for grinding, and in the grinding process, the limiting assemblies and the grinding assemblies are matched for use, so that the grinding efficiency is improved; and meanwhile, due to the fact that the autorotation direction and the circular motion direction of the grinding head and the second grinding planetary gear are opposite, regular grinding traces generated by traditional single-direction grinding are effectively broken through, and grinding is more uniform.

The invention discloses a raw foil titanium composite anode plate and a preparation method thereof, and belongs to the technical field of electrolytic copper foils, vinyl cage-type nanospheres prepared by a sol-gel method and 1, 1, 3, 3-tetramethyldisiloxane-propyl glycidyl ether are subjected to hydrosilylation reaction to obtain epoxy cage-type nanospheres, and the epoxy cage-type nanospheres and 1, 1, 3, 3-tetramethyldisiloxane-propyl glycidyl ether are subjected to hydrosilylation reaction to obtain the raw foil titanium composite anode plate. The amino group on the surface of the chitosan / mesoporous silica core-shell powder is utilized to initiate ring opening of the epoxy group of the epoxy cage type nanosphere, so that the surface of the chitosan / mesoporous silica core-shell powder is uniformly coated with the epoxy cage type nanosphere, and the multi-layer core-shell micron carbon sphere is formed after calcination; the micron carbon spheres can disperse stress through the multi-layer core-shell structure of the micron carbon spheres, so that surface cracking of the anode caused by impact of high-flow electrolyte is avoided; the micron carbon spheres can form a micro convex structure on the surface of the pretreated foil rolled material, so that the surface roughness can be increased, the falling of an oxide layer is avoided, and the micron carbon spheres can obviously increase the conductivity of the titanium anode.

The invention relates to a sapphire wafer back surface roughening method, which is based on a planetary double-sided grinding machine platform, and comprises the following steps: firstly, bonding the front surface of a low-TTV sapphire wafer subjected to double-sided accurate grinding and polishing to the surface of a ceramic plate, then fixing the ceramic plate on a wandering star wheel, then placing the wandering star wheel on a lower grinding plate, and grinding the sapphire wafer back surface with the lower grinding plate; wherein the back surface of the wafer faces the lower grinding disc; the upper grinding disc is forbidden, a sun gear and inner gear transmission mechanism is utilized, the wandering star wheel rotates on the lower grinding disc to form a precise grinding interface, and roughening of the back face of the sapphire wafer is achieved by regulating and controlling the rotating speed of the sun gear, the inner gear and the wandering star wheel. According to the method, on one hand, wafer thickness uniformity and parallelism control is achieved through the double-face polishing technology, on the other hand, low TTV control over the obtained single polished wafer is achieved in the roughening process through combination of equipment design and technology innovation, and the method is suitable for the 8-12-inch sapphire wafer and can be applied to the fields needing high-precision thickness control such as LED or semiconductor manufacturing.

The invention provides an alloy bar forging and pressing die, and relates to the technical field of dies, the alloy bar forging and pressing die comprises a supporting seat, a static die and a polishing assembly are arranged at the position, close to the center, of the top of the supporting seat, the polishing assembly comprises an arc-shaped block, a rotating ring is movably connected to the interior of the arc-shaped block, and a limiting groove is formed in the outer surface of one side of the rotating ring. According to the invention, when the alloy bar needs to be forged and formed, firstly, the alloy bar subjected to high-temperature treatment is inserted into a circular groove between the static die and the movable die, then the alloy bar is pulled outwards through an external tool, meanwhile, the movable die is hammered back and forth by using an air hammer, and after the alloy bar is moved out of the interior of the static die, a servo motor is started, and the alloy bar is driven to move back and forth. And the abrasive paper is driven to rotate, so that the forged and formed metal bar is polished, the surface of the metal bar is smooth, and the problem that the surface of the bar is rough after the alloy bar die is forged and formed in the prior art is solved.

The invention relates to the field of semiconductors and piezoelectric materials, in particular to a method for improving bonding strength of a lithium tantalate wafer, which comprises the following steps: a) thinning, polishing and cleaning the lithium tantalate wafer; b) cleaning the substrate slice with a weakly alkaline solution and then immediately cleaning the substrate slice with a cooling water bath; c) carrying out step-by-step cooling treatment on the substrate slice and then storing at constant temperature; d) carrying out surface activation on the lithium tantalate wafer and the substrate slice by using plasma; e) aligning the lithium tantalate wafer and the substrate slice, and pressurizing and bonding to obtain a bonded slice; and f) inspecting the bonding sheet. By optimizing the lithium tantalate wafer thinning and polishing process and the substrate slice low-temperature treatment process, the problems of edge tilting and surface roughness of the lithium tantalate wafer, self defects of the substrate slice and poor bonding caused by difference of thermal expansion coefficients of a functional layer and a substrate layer during bonding are effectively solved, and high-strength, high-precision and high-stability bonding is realized.

The present invention relates to a preparation method for super-hydrophobic glass, characterized in that the preparation method comprises two processes: glass surface roughening and surface treatment. A technical route covering chemical etching and nano SiO2 particle suspension spraying is used; a micro / nano structured coating is constructed on a glass surface, and the coating is further fluorinated to achieve super-hydrophobic performance. According to the present invention, a chemical etching liquid is used to carry out chemical etching treatment on the surface of sodium-calcium-silicon glass to obtain a glass surface having different rough structures, and a nano SiO2 coating is applied to the treated surface by spraying, so that the rigid micron-scale rough structures constructed by chemical etching on the glass surface interlace with a structure formed after accumulation of sprayed nanoscale SiO2 particles on the glass surface, thereby endowing the coating with good wear resistance.

The invention discloses a manufacturing process of a high-temperature-resistant washing tooling fabric, which relates to the technical field of tooling fabrics and comprises a fabric base material conditioning part, a fabric weaving processing part, a fabric dyeing treatment part and an after-finishing part. The fabric base material conditioning part adopts composite fibers, and the composite fibers are sequentially subjected to surface roughening treatment, PAMAM-polydopamine composite coating treatment and inorganic nanoparticle loading treatment; the fabric weaving processing part is used for preparing gray cloth; the fabric dyeing treatment part is used for preparing dyed gray cloth. The composite fibers are sequentially subjected to surface roughening, PAMAM-polydopamine composite coating and inorganic nanoparticle loading treatment and then subjected to weaving, dyeing and after-finishing, so that the structural stability and dye adhesion of the tooling fabric can be effectively improved, the high-temperature washing resistance is enhanced, and the service life of the tooling fabric is prolonged. Therefore, the manufacturing process of the high-temperature-washing-resistant tooling fabric has the effects of improving the dimensional stability and the color adhesive force.

The invention provides a fiber reinforced resin composite material and a preparation method thereof, composite resin and a protective product. The fibers are subjected to surface roughening and / or active groups are introduced to form modified fibers, and the active groups comprise one or more of hydroxyl, alkenyl, alkynyl, amino and halogen; coating the surfaces of the modified fibers with a thermoplastic resin solution grafted with maleic anhydride groups and / or epoxy groups, and performing heat treatment to form a first functional layer; nano particles are attached to the surface of the first functional layer and / or a supramolecular network structure is formed, and a second functional layer is formed. According to the preparation method, the interface bonding performance between the fiber and the resin is remarkably improved, and the prepared fiber-reinforced resin composite material has excellent strength, barrier performance, protection performance and the like.

The utility model relates to a coating device for a corrosion-resistant insulating coating surface, which belongs to the technical field of corrosion-resistant insulating coating and comprises a processing bin, two storage boxes are fixed at the rear end of the processing bin, two spraying pipes are arranged in the processing bin, a plurality of spraying heads are fixed and communicated with opposite walls of the two spraying pipes, and the spraying heads are communicated with the processing bin. A frame plate is fixed to the rear wall of the processing bin, and an adjusting mechanism used for adjusting the distance between the two spraying pipes is arranged at the rear ends of the two spraying pipes. The adjusting mechanism comprises sleeve blocks fixed to the outer surfaces of the two spraying pipes. According to the coating device for the surface of the corrosion-resistant insulating coating, the distance between the two spraying pipes can be shortened, so that the height of the positions where the two spraying pipes are located can be adjusted according to the thickness of a workpiece, adjustment can be conducted according to the thickness of the workpiece, and the problems that due to the fact that the distance is too short, a paint film becomes thick, sagging is possibly caused, the spraying distance is too long, and the spraying efficiency is high are solved. The paint film is thinned, the surface is rough, and the paint loss is large.

The application discloses a round-shank hard alloy cutter base surface pretreatment method, which comprises the following steps: S1, spraying soft abrasive to the blade part of the cutter base for micro passivation treatment; S2, inserting the blade part after the micro passivation treatment into hard abrasive, and rotating the blade part to perform friction roughening treatment; and S3, immersing the cutter base after the friction roughening treatment in a mixed acid solution to perform etching treatment. The hard alloy cutter pretreatment method provided by the application is simple in operation and has wide applicability to cutter shapes; the surface state of the cutter after treatment is quantitatively characterized, and the repeatability and stability in industrial production are improved; the soft abrasive is first used to perform micro passivation treatment on the blade part, and then the hard abrasive is used to perform friction roughening treatment on the blade part, so that the cutter surface roughening is more uniform.

The application discloses a preparation method of a multi-layer composite film system, a conductive thin film and a semiconductor device. The preparation method of the multi-layer composite film system comprises the following steps: preparing a first layer of metal film on a substrate by a vacuum coating method; performing surface roughening treatment on the first layer of metal film; and preparing a second layer of metal film on the first layer of metal film after the surface roughening treatment by the vacuum coating method. The preparation method of the multi-layer composite film system can enhance the adhesion between the film layers by performing the surface roughening treatment on the first layer of metal film, so that the mechanical combination mode is adopted between the film layers, the adhesion between the film layers is improved, some film layers which cannot be combined under vacuum can be effectively connected in the mechanical combination mode, the equipment investment cost is reduced, the multi-layer film system of various types is prepared by a single device, the substrate rework is effectively reduced or prevented, and the production cost is greatly reduced.

This invention relates to the field of tunnel concrete lining coating technology, and discloses a surface roughening coating material for hydraulic tunnel concrete lining. The material includes a pre-prepared coating base component, and porous ceramics and zeolite added to the coating base component before construction. The porous ceramics and zeolite are added after pretreatment, the pretreatment steps being: washing with clean water, drying, soaking and stirring in deionized water, allowing the deionized water to flow, and soaking in deionized water in a pressurized tank. The pre-prepared coating base component, after being stirred and produced, is stored in a packaging container and is only opened before construction and thoroughly mixed with the porous ceramics and zeolite. Construction must be completed within 1 hour after mixing. This invention, by adding specifically pre-treated porous ceramics and zeolite, can significantly improve the surface roughness reduction effect of hydraulic tunnel concrete lining, effectively solving the problems of shrinkage and pitting caused by concrete water absorption, reducing surface roughness, and meeting the needs of tunnel use.