9results about How to "Reduce flaking" patented technology

This application relates to the field of coating technology, specifically disclosing a heat-insulating, flame-retardant, and anti-corrosion coating and its preparation method. A heat-insulating, flame-retardant, and anti-corrosion coating comprises the following raw materials in parts by weight: 50-80 parts of silicone-acrylic emulsion, 10-15 parts of epoxy resin, 30-40 parts of heat-insulating microcapsules, 15-21 parts of hollow glass microspheres, 3-5 parts of dispersant, 0.5-2 parts of polypropylene glycol diglycidyl ether, 1-5 parts of leveling agent, and 15-20 parts of water. The heat-insulating microcapsules comprise an aluminum powder core and a heat-insulating and flame-retardant capsule wall layer, the capsule wall layer material comprising acrylic resin and polyamide resin. The preparation method is as follows: hollow glass microspheres and heat-insulating microcapsules are added to silicone-acrylic emulsion and water and dispersed evenly to obtain a mixture; the dispersant, polypropylene glycol diglycidyl ether, epoxy resin, and leveling agent are added to the above mixture and mixed evenly to obtain the interior wall insulation coating. The composition of this application achieves a comprehensive improvement in heat insulation, flame retardancy, and anti-corrosion performance.

This application provides a quenched and tempered steel plate and its production method. The quenched and tempered steel plate comprises the following components by mass percentage: C: 0.15–0.20%; Si: 0.20–0.40%; Mn: 1.20–1.50%; Cr: 0.20–0.50%; Ni: 0.10–0.20%; Nb: 0.020–0.040%; Ti: 0.010–0.040%; Mo: 0.30–0.50%; B: 0.0010–0.0025%; P≤0.015%, S≤0.004%; N≤0.004%, Als: 0.010–0.060%, with the remainder being Fe and unavoidable impurities. This application manufactures a thick, high-strength quenched and tempered steel plate with high surface quality by adjusting the elemental composition and content of the quenched and tempered steel plate, specifically by adding certain amounts of Ni, Cr, and B.

The application discloses an inorganic copolymer anticorrosive paint and a preparation method thereof, and relates to the technical field of paints. The inorganic copolymer anticorrosive paint comprises the following raw materials in parts by weight: 20-30 parts of silica sol, 8-15 parts of sodium hydroxide, 30-45 parts of metakaolin, 8-20 parts of quartz sand, 15-25 parts of water, 0.3-2 parts of sodium polyacrylate, 0.2-3 parts of polydimethylsiloxane emulsion, 5-12 parts of modified nanometer titanium dioxide, 6-10 parts of modified epoxy resin, 10-25 parts of hydroxyethyl methacrylate, 5-10 parts of zinc phosphate, 3-8 parts of aluminum tripolyphosphate and 2-6 parts of red iron oxide. The inorganic copolymer anticorrosive paint has scientific raw material proportioning, and the anticorrosive performance is enhanced through the modified nanometer titanium dioxide and the epoxy resin. In the preparation, step-by-step feeding and ultrasonic dispersion are adopted to ensure that the materials are uniform, and vacuum degassing and nitrogen protection are adopted to improve the stability. The silica sol, the zinc phosphate and other components have a synergistic effect, a dense coating is formed, the anticorrosive performance is high, the construction performance is good, and the inorganic copolymer anticorrosive paint is suitable for various scenes.

This invention belongs to the fields of powder metallurgy and materials science and technology, specifically disclosing a preparation process for a high-wear-resistant WC-based composite material. The process involves preparing WC powder, second-phase powder, and graphene material; adding the graphene material to a dispersion medium and performing ultrasonic dispersion; mixing the graphene dispersion with the WC powder and second-phase powder and ball milling; drying the mixture using a vacuum rotary evaporation drying process; and densifying it using a hot-pressing sintering process. This invention enables the WC-based composite material to simultaneously achieve high hardness and high fracture toughness; effectively inhibits oxidative wear of the WC-based composite material at high temperatures, improving its high-temperature wear resistance; and achieves uniform and stable dispersion of the graphene reinforcing phase in the WC matrix, avoiding agglomeration, thereby fully utilizing its strengthening and lubrication effects. The composite material prepared by this invention is particularly suitable for use as high-speed cutting tools, high-temperature molds, and high-temperature moving parts in aerospace applications, and has broad application prospects.

The utility model relates to the field of twist drill, and disclose a kind of multilayer composite coating twist drill, including drill bit end and the connecting end being connected with drill bit end, at least two groups of spiral grooves are set in the one end of drill bit end, spiral groove is used to discharge the debris generated when drilling, the inner side edge end position of spiral groove is integrally formed with reinforcing blade, the outside of drill bit end is provided with composite coating, reduce use cost, improve economy: twist drill adopts detachable design, drill bit end and connecting end are detachably connected by plug-in part, bolt assembly and other structures.When drill bit end wears or is damaged, only drill bit end needs to be replaced, and the connecting end can continue to be used, greatly reducing material waste and reducing overall use cost. Compared with the situation that the traditional integrally formed twist drill needs to be scrapped as a whole, the economy and resource utilization of the product are significantly improved.

This invention discloses a method for in-situ generating a highly bonded Cr2O3 interface to improve the thermal shock resistance of coatings. The method involves a coating preparation technique, particularly in the process of preparing a coating on a Cr-containing metal substrate, where an electric field of specific intensity is applied during the high-temperature heat treatment stage. By utilizing the electric field to induce the outward diffusion of Cr ions and the inward migration of oxygen ions in the substrate, a dense Cr2O3 transition layer is in-situ induced at the interface between the coating and the metal substrate. This transition layer effectively alleviates the problem of thermal expansion coefficient mismatch between the ceramic coating and the metal substrate, releases interfacial thermal stress, and significantly enhances the bonding strength of the coating. This invention achieves control over the thickness of the transition layer by adjusting the current intensity. Experiments show that this method can significantly suppress the generation of microcracks during thermal shock cycling, thereby greatly improving the thermal shock resistance of the coating and effectively solving the problem of easy cracking and peeling of oxide coatings during high-temperature thermal cycling.

This invention provides a method for optimizing the formulation of waterborne polyurethane anticorrosive coatings, comprising: acquiring basic component data of waterborne polyurethane, constructing a structured dataset, using an optimization algorithm to simulate and analyze the component ratios in the structured dataset, generating a candidate formulation set, extracting performance parameters related to adhesion and chemical resistance from the candidate formulation set, filtering through preset thresholds to obtain a selected formulation set, conducting simulation tests on the selected formulation set to obtain performance data, adjusting component ratios to generate an optimized formulation version if the performance data does not meet preset standards, classifying the optimized formulation version using a risk assessment model, eliminating high-risk ratios to form a stable formulation set, using low-risk formulations to predict synergistic performance effects, and determining the final formulation scheme.

This invention belongs to the field of monocrystalline silicon production technology, specifically relating to a quartz crucible coating structure and its preparation method for reducing the oxygen content of monocrystalline silicon. The quartz crucible coating structure for reducing the oxygen content of monocrystalline silicon includes a coating 1 and a coating 2. Coating 1 is disposed on the inner surface of the quartz crucible and is in a molten state at temperatures above 1200°C. Coating 2 is disposed on top of coating 1 and is in a solid state at temperatures above 1500°C. This invention, by designing a specific coating on the inner surface of the quartz crucible, reduces direct contact between the quartz crucible and the molten silicon, thereby effectively reducing the generation of SiO during monocrystalline silicon pulling, thus reducing the oxygen content in the monocrystalline silicon rod, improving the quality of the monocrystalline silicon, and reducing coating peeling caused by differences in internal stress and thermal expansion coefficients, improving the stability and service life of the coating.

The utility model relates to petroleum exploitation equipment technical field, concretely relates to a kind of pipeline auxiliary installation equipment for petroleum exploitation, it includes support frame platform, and the upper surface of support frame platform is provided with ring plate, and the plate surface of ring plate is radially slidably provided with arc push plate, and arc push plate is connected radial drive assembly;Two arc push plates are radially symmetrically arranged on the ring plate;Several round wheels are rotatably arranged on the inner arc side of arc push plate, and are evenly arranged along the arc shape of the arc, and the rotation direction of round wheel is towards vertical direction;Two layers of symmetric arc push plates are vertically arranged on the ring plate;Ring plate is connected with rotary drive assembly, and the rotation direction is along the radial direction of ring plate;Speed sensing assembly is provided on arc push plate.The utility model realizes the technical problem of adjusting alignment petroleum exploitation channel when petroleum pipeline is transported, and reducing the damage to pipeline in conveying process.