476 results about "Coating adhesion" patented technology

The invention discloses a carbon fiber composite material surface modification spraying system and a control method thereof. The system comprises a multi-axis robot, a plasma spray gun, a contact angle measuring probe, a 3D line laser scanner, a hyperspectral imager, an environment sensor and a controller. According to the method, the plasma power and the robot speed are adjusted in real time through contact angle measurement and plasma treatment feedback control, so that the CFRP surface can accurately reach a target value, and the coating adhesive force is improved; 3D line laser scanning and hyperspectral imaging are combined, and the posture, the distance, the wet film thickness and the component uniformity of the spray gun are monitored in real time; based on a prediction model fusing a physical model and a neural network, a self-adaptive fuzzy PID control algorithm is adopted, and the coating flow and the track posture of a spray gun are accurately regulated and controlled in real time. The problems of weak coating binding force, uneven thickness, orange peel, sagging and serious coating waste in traditional spraying are effectively solved, and self-adaptive, high-quality and green spraying of workpieces with complex curved surfaces is achieved.

The invention discloses an edge spraying compensation control method based on intelligent visual feedback. The method comprises the following steps: performing space scanning on a to-be-sprayed workpiece to obtain spraying image data, and establishing a space corresponding relation between a spray gun motion coordinate and a workpiece surface coordinate; registering the real-time spraying image by using the corresponding relation, identifying a geometric boundary line, brightness gradient change and a coating adhesion area of the edge of the workpiece, and generating edge feature data; according to the difference between the edge feature data and the target spraying image, the spraying coverage deviation and the boundary overlapping error are calculated, the coating thickness change trend, the optical density change rate and the boundary direction offset are extracted, and the spraying gun posture adjustment amount, the spraying distance correction amount, the spraying pressure correction amount and the path speed correction amount are generated; the angle, the spraying distance, the pressure and the movement speed of the spray gun are dynamically adjusted according to the parameters; according to the method, real-time visual feedback and self-adaptive compensation control in the spraying process are achieved, and the uniformity and consistency of the coating on the edge of the workpiece are effectively improved.

The invention relates to the field of anticorrosive paint, in particular to anticorrosive paint containing lanthanum cerium oxide and a preparation method of the anticorrosive paint. The invention relates to an anticorrosive coating containing lanthanum cerium oxide. The anticorrosive coating is prepared from the following raw materials: 28 to 45 parts of ultraviolet stable composite film forming matter, 5 to 10 parts of composite rare earth filler, 6 to 12 parts of supported synergistic antirust agent, 18 to 30 parts of mixed solvent, 0.8 to 2.5 parts of dispersing agent, 2.7 to 5.3 parts of functional additive and 0.5 to 1.2 parts of nano montmorillonite, the composite rare earth filler is lanthanum cerium oxide-hydroxyapatite composite powder with a core-shell structure, wherein lanthanum cerium oxide is used as a core, hydroxyapatite is used as a shell, and the thickness of the shell layer is 10-20 nm; the ultraviolet stable composite film forming substance comprises epoxy resin and ultraviolet grafting modified polyurethane in a weight ratio of 1: (0.6-2.2); the supported synergistic antirust agent is a mixture of mesoporous silica supported benzotriazole and zinc molybdate. And the obtained coating is high in adhesive force and long in service life.

The invention discloses a coating proportion optimization method and system based on multi-dimensional analysis, and relates to the technical field of coating engineering.The method comprises the steps that multi-type high-precision sensors are integrated in spraying equipment to collect environment data and coating data in the environment and the spraying process in real time, and the environment data and the coating data are preprocessed through a data processing platform; and forming a spraying influence data set. The central control system calculates a coating thickness recursive adjustment index tdt according to a nonlinear recursive model to perform coating thickness conformity evaluation, and when the evaluation is that the requirement is not met, a coating viscosity fluidity index tll and a coating adhesion response index zfl are deduced according to the performance response data set and the coating thickness recursive adjustment index tdt; and summarizing to generate a comprehensive coating adjustment index ttz, and evaluating whether the current ratio is compliant or not in real time, so that the coating can achieve high consistency, high adhesiveness and process stability in different spraying environments, and the coating quality and the intelligent response capability are remarkably improved.

The invention provides a sidewalk antiskid terrace material and a construction process thereof, and belongs to the technical field of terrace material manufacturing. The sidewalk antiskid terrace material is prepared from the following components: epoxy resin, polysiloxane elastic resin, fluorocarbon resin, modified covalent organic framework nanosheets, boron nitride nanotubes, nano silicon nitride particles, nano silicon dioxide, nano zinc oxide, a modified flame retardant, attapulgite, a curing agent, an accelerant, a flatting agent, a coupling agent and a dispersing agent. According to the sidewalk antiskid terrace material, various high-performance resins are compounded with the nano filler to form a coating with a compact and uniform structure, so that the mechanical strength and wear resistance of the terrace are remarkably improved. In addition, due to the application of the modified flame retardant, the floor has a good flame-retardant effect, and the safety is improved. The whole formula and the construction process are scientific and reasonable, strong adhesion of the coating is ensured, construction is simple and convenient, curing is sufficient, and the coating is suitable for long-term use of outdoor sidewalks and has attractive appearance and practicability.

The invention discloses a preparation process of a sintering kiln silicon carbide guide roller with thermal shock resistance and high-temperature corrosion resistance. The process comprises the following steps: sequentially carrying out surface pretreatment such as reticulate pattern laser engraving, sand blasting and cleaning and drying on a silicon carbide guide roller substrate; performing plasma spraying on a pure aluminum oxide coating after preheating; carrying out segmented laser remelting on the coating to improve the compactness; and finally, coating the nano silicon carbide slurry, calcining and curing. The thermal shock resistance and the high-temperature corrosion resistance of the guide roller are remarkably improved by enhancing the binding force of the coating through laser engraving, optimizing the density of the coating through laser remelting and combining post-treatment of nano silicon carbide slurry, and the service life of the guide roller in a lithium battery positive electrode material sintering kiln is prolonged.

The invention discloses an intelligent evaluation method for coating adhesion of a hot-dip galvanized steel pipe, and relates to the technical field of intelligent quality control of galvanized steel pipes, and the method comprises the following steps: constructing a galvanization process time sequence multi-dimensional data set by fusing static attributes of a steel pipe, time sequence process parameters of a galvanization production process and coating thickness measurement data; based on an improved signal volatility analysis method, interface reaction dynamic characteristics and cooling process dynamic characteristics are extracted; implicit microstructure features are generated through a feature cross structure guided by material science and physical information; and realizing continuous numerical prediction and grade probability output of the adhesion of the plating layer by using the implicit space representation regression model based on the antagonistic auto-encoder. According to the method, interpretable mapping between the microstructure and the coating adhesive force in the galvanization process is achieved, the coating adhesive force prediction accuracy and evaluation reliability are improved, and a decision basis can be provided for process adjustment and quality risk pre-control in the production process.

The invention belongs to the technical field of kitchen ware coatings, and discloses a preparation method of a wear-resistant coating based on nano structure optimization, through a specific ratio of nano silicon carbide, titanium dioxide, boron nitride and silver, four particles form a complementary and synergistic functional system-silicon carbide provides a hardness basis, boron nitride optimizes the antifriction performance by means of a layered structure, and the wear-resistant coating is prepared. Titanium dioxide enhances the chemical stability; by matching with a composite dispersion process of high-energy ball milling and ultrasonic treatment, particle aggregation is broken, so that the coating forms a uniform and compact nano-structure, the structure can effectively disperse friction stress, the wear resistance is remarkably improved, and the service life of the kitchen ware in a high-frequency cooking friction environment is greatly prolonged; a kitchen ware substrate is subjected to 80-mesh white corundum sand blasting to form a rough surface, then impurities are removed through ultrasonic cleaning, and a good interface condition is created for coating adhesion; and a subsequent stepped vacuum curing process promotes chemical bonding of the nanoparticles and the polyimide resin, and the binding force of the interior of the coating and the binding force of the coating and the substrate are enhanced.

The invention discloses a powder coating imitation copper wire drawing coating based on a gradient composite structure and a preparation method of the powder coating imitation copper wire drawing coating, and relates to the technical field of novel printing ink. The invention relates to a gradient composite structure-based powder coating copper-wire-drawing-imitating coating, which is characterized by comprising a bottom layer, a middle layer and a surface layer, wherein the bottom layer is an epoxy resin-based powder coating layer containing nano silicon dioxide; the middle layer is a copper-imitating ink wiredrawing layer containing micro-nano copper powder in directional arrangement; the surface layer is a water-based gloss oil layer containing a self-repairing flatting agent; wherein the bottom layer is formed by electrostatic spraying. Through the gradient composite structure design of the bottom layer, the middle layer and the surface layer, the coating provided by the invention shows remarkable advantages in the aspects of hardness (4H), salt fog resistance (more than 1000 hours), self-repairing property and the like, and overcomes the limitation that the traditional coating is insufficient in adhesive force and hard to consider both hardness and wear resistance.

The present application relates to a kind of high weather resistance and coating adhesion sunscreen coating and its preparation method, belong to sunscreen coating technical field;The present application uses the modifier with disulfide bond and polymerizable double bond to modify polyacrylate emulsion, significantly improve the flexibility of polyacrylate molecular chain after modification, reduce solidification shrinkage stress and internal stress, improve the coating adhesion of sunscreen coating of hard filler to matrix resin, it can also form stable chemical bonding between polyacrylate resin and titanium dioxide, provide stable stress transfer path, reduce the cracking and warping of coating, in addition, the modifier of the present application has good heat resistance aromatic ring structure, using the modifier of the present application can improve the heat resistance of sunscreen coating without introducing additional modifier.

The invention relates to the technical field of fluorosilicone materials, in particular to a glass fiber sleeve with an excellent voltage resistance function and a preparation method of the glass fiber sleeve. The glass fiber sleeve with the excellent voltage-resistant function comprises a glass fiber sleeve and a composite coating coated on the outer side of the glass fiber sleeve, the composite coating is obtained by thermocuring a coating material; the coating material is prepared from the following raw materials in parts by mass: 50 to 100 parts of fluorinated silicone rubber emulsion, 1 to 5 parts of bis (3-aminopropyl) terminated polydimethylsiloxane, 0.5 to 1.5 parts of furfuryl alcohol resin, 1 to 5 parts of epoxy resin, 1 to 5 parts of activated nano silicon dioxide, 1 to 3 parts of boron nitride nanowire, 1 to 2 parts of dopamine hydrochloride, 1 to 2 parts of dispersing agent and 10 to 30 parts of solvent. The invention can effectively ensure that the coating forms a compact cross-linked structure in the curing process, and can enhance the adhesive force of the coating, weaken the temperature difference between the surface and the interior, inhibit the heat accumulation effect and delay the degradation of the insulating property.

The invention relates to the technical field of strip steel cutting machining, in particular to a coiled strip steel shearing machining treatment method and device. S2, double-area elastic abutting is carried out; s3, dynamic cutting and dynamic adjustment; s4, shearing dynamic parameters; s5, dynamic cleaning of the cutting edge is conducted, specifically, a plating layer adhering to the cutting edge is removed in real time in a combined mode of airflow blowing and brush cleaning; s6, coating micro-area synchronous repair is carried out; and S7, buffering and rolling are conducted, specifically, after spraying, drying and flexible straightening are conducted, rolling is conducted, and machining is completed. Through pretreatment integrated design, double-area elastic symmetric constraint and a vibration dynamic adjusting system, vibration interference of the strip steel and the cutter is accurately restrained, and matched control over the cutter gap and the strip steel thickness is achieved, so that the flatness and size precision of the strip steel shearing face are remarkably improved, the defects of shearing burrs, coating adhesion and the like are effectively reduced, and the product quality is improved. And the harsh requirement of high-end strip steel on the shearing quality is met.

An automatic spraying device for a surface coating of a special-shaped ceramic component relates to the technical field of surface spraying equipment and comprises an integrated electric cabinet, a spraying workbench is fixed to the upper surface of the integrated electric cabinet, and a feeding and discharging conveying assembly, a vacuum positioning assembly, a surface pretreatment assembly, a self-adaptive spraying assembly and a drying and curing assembly are arranged on the spraying workbench; the feeding and discharging conveying assembly comprises a transversely-sliding transfer conveying base. A plurality of feeding conveying rollers and a plurality of discharging conveying rollers which are the same in number are arranged on the two transverse sides of the transfer conveying base correspondingly. The vacuum positioning assembly comprises a vacuum adsorption mold which is rotationally arranged, the vacuum adsorption mold is a conical mold which is gradually shrunk from bottom to top, and a T-shaped vacuum adsorption runner is formed in the vacuum adsorption mold. The device solves the problems that when a traditional special-shaped ceramic component is subjected to spraying processing, the automation degree is low, the special-shaped adaptation and positioning performance is poor, the spraying precision is difficult to control, the coating adhesive force is weak due to incomplete pretreatment, equipment is difficult to maintain and debug, and the adaptability is poor.

The invention relates to the technical field of anti-aging coatings, in particular to a tire anti-aging coating and a preparation method thereof. According to the invention, the problems of poor adhesive force and poor aging resistance of a tire coating are solved; through the synergistic effect of the epoxy polysiloxane and the waterborne polyurethane-acrylate copolymer emulsion, multi-stage bonding of a tire / coating interface is realized, and the added fluorosilicone block copolymer can further form a protective barrier; by preparing modified nano silicon dioxide, active groups grafted by a silane coupling agent on the surface capture free radicals, and an oxidation chain reaction is blocked; n, N '-diphenyl-p-phenylenediamine released by the polyurea microcapsules can remove free radicals generated by oxidation in the coating, and the N, N'-diphenyl-p-phenylenediamine is matched with the compound light stabilizer to form a dynamic defense chain; a flexible long chain of the polycaprolactone polyol inhibits crack propagation through free volume filling, and the four components synergistically improve ultraviolet resistance, ozone resistance and oxidation corrosion resistance; and through a staged low temperature-medium temperature-high temperature gradient curing strategy, the adhesive force of the coating is improved.

The invention discloses a waterproof bag film material and a preparation method thereof, relates to the technical field of polybutylene terephthalate polymer materials, and belongs to the patent classification number C08L67 / 02. The method comprises the following steps: sequentially carrying out silane coupling agent modification and solid-phase free radical polymerization on activated gas-phase nano silicon dioxide to construct a core-shell structure nano reinforced filler with rich epoxy groups on the surface; carrying out melt blending extrusion on the mixture, PBT (Polybutylene Terephthalate) resin, a chain extender, an end-capping reagent and the like to obtain hydrolysis-resistant modified granules; a PBT base film is prepared through casting, two-way stretching and heat setting; the preparation method comprises the following steps: performing ultraviolet ozone activation on a base film, coating a super-hydrophobic coating solution prepared from aminated nano silicon dioxide, epoxy-terminated polydimethylsiloxane, a cross-linking agent and an accelerant, and heating and curing to finally obtain the high-strength high-waterproof PBT waterproof bag film. The prepared film has excellent mechanical strength, body hydrolysis resistance and super-hydrophobic surface, the water contact angle is high, the coating adhesive force is high, and the waterproof performance is lasting and stable under high-frequency bending.

The invention relates to the technical field of food packaging, in particular to a bacteriostatic aluminum foil material for a meal box and a preparation method thereof. The material is subjected to aluminum foil surface activation, then is sequentially impregnated in a sol impregnation liquid and an outer layer coating liquid, is subjected to dip coating, and finally is subjected to ultraviolet curing to obtain a multi-layer composite structure. The middle layer is made of an aminated organic silicon material and is firmly combined with the aluminum base material and the outer layer resin through chemical bonds, so that the adhesive force of the coating is remarkably improved. The outer coating is added with a phenyl triazole modified layered double hydroxide loaded nano-silver antibacterial agent, so that slow release and efficient broad-spectrum antibacterial property of silver ions are realized, the thermal stability is improved, and reliable performance under a high-temperature condition is ensured. The multilayer design and multiple antibacterial mechanisms have a synergistic effect, the problems of poor antibacterial durability, insufficient adhesive force, low heat resistance and the like of a traditional lunch box aluminum foil material are effectively solved, meanwhile, food safety is considered, and the aluminum foil material is suitable for the field of modern high-requirement food packaging.

The invention provides an efficient surface treatment method for plastic gaskets, which comprises the following steps: S1, pretreatment: putting a plurality of groups of plastic gaskets into a tool basket, and sequentially carrying out ultrasonic degreasing by an ultrasonic cleaning machine, deionized water spraying washing by a spraying cleaning machine and vacuum drying by a vacuum drying oven; s2, plasma activation is conducted, specifically, the gasket is placed on a rotary carrying table of rotary plasma treatment equipment along with the tool basket, a plasma treatment cavity is vacuumized to 5-15 Pa, then treatment gas is introduced, a plasma generator is started, and the rotary carrying table drives the gasket to rotate at a constant speed during treatment; s3, functional coating coating is conducted, specifically, the activated gaskets are taken out and arranged to an ultrasonic atomization and electrostatic spraying all-in-one machine, and modified coating is coated; and S4, composite curing: pre-curing the coated gasket through an infrared pre-curing oven, and then transferring the gasket into an ultraviolet pre-curing oven for ultraviolet curing to obtain a finished product. According to the method, the treatment efficiency and uniformity are improved, and the coating adhesive force and the gasket performance are enhanced.

The invention discloses a super-hydrophobic heat insulation / radiation refrigeration integrated fabric and a preparation method thereof.The method comprises the steps that firstly, a heat insulation layer is constructed on a base fabric through electrostatic spraying, specifically, PU and SCA are dissolved in DMF, SiO2 aerogel is added to form spraying liquid, a three-dimensional network structure is formed between aerogel and fibers through the synergistic cross-linking effect of SCA and PU, the aerogel is firmly anchored, and the heat insulation layer is formed; the adhesive force and the washability of the coating are improved. PVDF-HFP and ZrO2 nano-particles are blended and spun to form a composite structure with nano-fibers wrapping ceramic particles, particle aggregation is avoided, and the radiation refrigeration and heat insulation performance of PVDF-HFP and ZrO2 nano-particles are synergistically exerted. Finally, a substrate-heat insulation-refrigeration three-dimensional composite structure is formed through hot pressing treatment, chemical bonding of all the layers is achieved through SCA, the fabric has the characteristics of high strength, abrasion resistance, hydrophobicity, heat insulation and radiation refrigeration, and the problem that durability and comfort of a traditional material are difficult to achieve at the same time is solved.

The invention discloses a preparation process and application of a photovoltaic solder strip precoating flux, and belongs to the technical field of energy conservation and environmental protection. According to the welding flux, polyurethane modified epoxy resin and photosensitive acrylate serve as matrixes, modified carbon quantum dots, a nano welding-aid active agent and a modified dicyandiamide curing system are introduced, fumed silica, polyether modified organic silicon, a titanate coupling agent, an antioxidant and a flatting agent are compounded, and high-speed dispersion, grinding and vacuum defoaming are conducted to obtain the welding flux. The obtained pre-coated flux forms a coating through precise coating, cross-linking curing is conducted under the UV-LED segmented photocuring and thermocuring conditions, the welding strength of a welding strip and the adhesive force of the coating can be remarkably improved, corrosion resistance is enhanced, VOC emission is reduced, and the pre-coated flux is suitable for large-scale production of efficient and long-life photovoltaic modules.

The invention relates to the technical field of coatings, in particular to a PVD (Physical Vapor Deposition) coating process method applied to a galvanized sheet stamping die, which comprises the following steps of: pretreating the die, cleaning the surface of the die by a wet process, placing the die in a vacuum deposition cavity, vacuumizing, and heating to a preset temperature in an inert gas environment; plasma pretreatment is conducted on the surface of the mold, a high-power pulse magnetron sputtering cathode of a chromium target is selected to discharge in the argon working environment to generate plasma rich in chromium ions, and negative bias voltage is applied to the mold; starting at least one unbalanced magnetron sputtering cathode, gradually increasing the target current by the unbalanced magnetron sputtering cathode in a current ramp-up mode so as to improve the target voltage, and synchronously introducing nitrogen as a reaction gas, so that a nitride transition layer is deposited on the surface of the mold; and a high-power pulse magnetron sputtering cathode and an unbalanced magnetron sputtering cathode synchronously work on the transition layer to carry out multi-source reactive sputtering deposition, so that a multi-layer hard coating formed by alternating titanium aluminum vanadium and chromium nitride is formed. By combining the high-power pulse magnetron sputtering technology and the unbalanced magnetron sputtering technology, the problems that in the prior art, a coating is poor in adhesive force and insufficient in high temperature resistance are solved.

The utility model discloses an aluminum pot coating adhesive force testing device, which relates to the technical field of aluminum pot testing, and comprises a base, a positioning plate and a transverse frame, the top end of the base is provided with the positioning plate, the top end of the positioning plate is provided with an aluminum pot body, and the inner side of the positioning plate is provided with a first slide rail; a clamping mechanism used for fixing the position of the aluminum pot body is arranged in the first sliding rail, a transverse frame is installed at the top end of the positioning plate, second sliding rails are installed at the top end and the side wall of the transverse frame, moving blocks are arranged in the second sliding rails, guide rods are installed on the inner walls of the moving blocks, and the outer walls of the guide rods are sleeved with sliding blocks; according to the device, the pressing block drives the pull rod to move downwards, then the pull rod drives the positioning frame to turn over downwards around the arc-shaped positioning block to be pressed above the aluminum pot body, and through the structure, the position of the aluminum pot body can be rapidly pressed and fixed conveniently.

This invention relates to the field of tablet preparation technology, specifically to a drug coating state detection system and method. The system includes a surface pretreatment module, a coating execution module, an online monitoring module, a data processing module, and a control module. The pretreatment module removes contaminants and enhances activity through plasma treatment, thereby improving coating adhesion. The coating execution module uses a fluidized bed environment, combined with a multi-channel spray gun and attitude control, to achieve uniform coating. The online monitoring module simultaneously acquires three-dimensional morphology, spectral, and image data, suppressing interference to ensure reliability. The data processing module calculates thickness and uniformity indicators, using machine learning to correlate process and quality. The control module dynamically adjusts parameters based on quality parameters using a PID algorithm, initiating emergency handling in case of anomalies. The method corresponds to the above steps. This invention improves coating adhesion and uniformity, achieves real-time monitoring and precise control, reduces the difficulty and cost of quality control, and is applicable to the production of various functional tablet coatings.

A method of making a battery current collector foil includes heat treating a foil sheet and mechanically roughening the heat treated foil sheet to create a surface roughness of between 2-4 μm. The heat treating and mechanical roughening of the foil sheet provides improved coating adhesion. One of an anode and cathode coating is then applied to the roughened, heat treated, foil sheet.

The invention relates to the technical field of tablet preparation, in particular to a drug coating state detection system and method, and the system comprises a surface pretreatment module, a coating execution module, an online monitoring module, a data processing module and a control module. The pretreatment module is used for removing pollutants through plasma treatment, improving activity and enhancing coating adhesive force; the coating execution module takes a fluidized bed as an environment, and realizes uniform coating in combination with a multi-channel spray gun and posture regulation and control; the on-line monitoring module synchronously collects three-dimensional morphology, spectrum and image data, interference is suppressed, and reliability is guaranteed; the data processing module calculates thickness and uniformity indexes, and associates process and quality by machine learning; and the control module dynamically adjusts the parameters by using a PID algorithm based on the quality parameters, and starts emergency processing when the parameters are abnormal. The method corresponds to the steps. According to the invention, the adhesive force and uniformity of the coating are improved, real-time monitoring and accurate regulation are realized, the quality control difficulty and cost are reduced, and the method is suitable for functional coating production of various tablets.

The utility model provides a compressor rear end cover coating and a compressor rear end cover, and belongs to the technical field of compressors. The compressor rear end cover coating comprises a bottom layer bonding layer and an insulating layer, the bottom layer bonding layer is attached to a compressor rear end cover, the insulating layer is arranged on the bottom layer bonding layer, and the insulating layer comprises PEEK paint. The coating is good in adhesive force and excellent in insulating property, and can meet the use requirements of the compressor.

This utility model relates to a straddle-type wheeled conductive seat, comprising: a frame and a rolling contact assembly mounted on the frame. The rolling contact assembly includes: a fixed seat connected to the frame and a conductive wheel pivotally connected to the fixed seat. Both the fixed seat and the conductive wheel are conductive components. The axis of the conductive wheel is horizontally oriented. The conductive wheel includes: a wheel body, a first limiting sleeve located on one side of the wheel body, and a second limiting sleeve located on the other side of the wheel body. The wheel body, the first limiting sleeve, and the second limiting sleeve are coaxial. The outer diameter of the wheel body is larger than the outer diameter of the first limiting sleeve, and the outer diameters of the first limiting sleeve and the second limiting sleeve are equal. The wheel body is used to contact the bottom surface of the top of the strip so that the strip straddles the wheel body. This straddle-type contact between the strip and the conductive wheel not only increases the electrical contact area but also changes the contact zone with the strip, thereby improving the coating adhesion and preventing scratches on the outer surface of the strip.

The utility model discloses a positive electrode material coating device, which relates to the technical field of positive electrode material processing and comprises a base, one end of the top of the base is fixedly connected with a cleaning bin, the other end of the top of the base is fixedly connected with a mixing bin, and an output port of the cleaning bin is fixedly connected with an input port of the mixing bin. A first electric valve is fixedly connected to the top of the cleaning bin, a feeding cleaning bin is fixedly connected to the top of the first electric valve, and a water inlet pipe opening is fixedly connected to the side wall of the feeding cleaning bin. According to the base provided by the utility model, the positive electrode material and the coating material are efficiently mixed on the basis that the coating adhesion efficiency is improved by cleaning and pretreating the positive electrode material; therefore, the problems that an existing positive electrode material coating device cannot clean and pretreat the positive electrode material during use, adhesion of the coating material is affected by dust adhered to the surface, and the mixing efficiency is low by adopting a stirring mode during mixing are solved.

The application discloses an alkaline chemical nickel surface treatment method for pure aluminum or aluminum alloy; the method solves the problems of twice zinc immersion and once zinc removal in the production process, and only one-time zinc immersion process can meet the requirement of product coating adhesion, effectively improves the product stability and safety in the production process, and simultaneously, the method does not need 50% nitric acid zinc removal process, can obviously reduce the use amount of nitric acid in the production process, and efficiently improves the production environment.

The invention belongs to the technical field of drilling tools, and discloses a coating drilling tool and a machining method.The coating drilling tool comprises a drill tip part, the drill tip part comprises a front tool face and two tool end faces, the two tool end faces intersect to form a chisel edge, each tool end face comprises a first rear tool face, and the first rear tool faces intersect with the front tool face to form a main cutting edge; the drill tip part further comprises a first machining area, the first machining area is arranged on the front tool face and intersects with the main cutting edge, a first micro-texture is arranged in the first machining area, and / or the drill tip part further comprises a second machining area, the second machining area is arranged on the first rear tool face and intersects with the chisel edge and the main cutting edge, and a second micro-texture is arranged in the second machining area. A second microstructure is arranged in the second machining area. The first microtextures and the second microtextures can improve the surface roughness of the front tool face and the first rear tool face, improve the coating binding force, slow down tool abrasion, improve the cutting performance and reduce abrasive particle abrasion and bonding abrasion between interfaces.

This invention discloses a semi-automatic sample preparation device and its method for testing coating bonding strength, including a support and a sample block fixing part thereon, and an automated sample block advancing part. The sample block fixing part includes a sample block placement rack and a sample block fixing block. The former is fixed to the support and has an arc-shaped first groove extending through it in a direction perpendicular to the first surface of the support, where two sample blocks are placed coaxially. The latter is located on the sample placement rack and has an arc-shaped second groove on its lower surface. One end of the sample block fixing block is hinged to the sample block placement rack, and the other end can be locked to the placement rack. A hole extends through the sample fixing block. The automated sample block advancing part includes an electric push rod and a sensing system. The electric push rod is fixed to the support via a motor mounting bracket and is used to push the second sample block toward the first surface of the support. The sensing system detects the adhesive thickness and pushing pressure to control the start and stop of the electric push rod. This invention can produce high-quality sample blocks.