28results about How to "High strength properties" patented technology

The invention discloses an alumina fiber reinforced mullite ceramic-based composite material with volume concentration gradient distribution, which is composed of continuous alumina fiber cloth and a mullite ceramic matrix, the continuous alumina fiber cloth and the mullite ceramic matrix are in volume concentration gradient distribution, the volume density of the alumina fiber at the center is 50-60%, and the volume density of the alumina fiber at the center is 50-60%. The volume density of the mullite ceramic is 10-20%, the volume densities of the alumina fiber and the mullite ceramic are gradually increased from the center to the outside, the volume density of the surface alumina fiber is 70-80%, the volume density of the mullite ceramic is 20-30%, and the surface alumina fiber and the mullite ceramic form a compact structure which can block air conduction. The heat insulation performance of the alumina fiber reinforced mullite ceramic-based composite material is remarkably improved, and the high-strength characteristic is achieved while the light weight is achieved.

The invention provides a lightweight high-strength composite material, and relates to the technical field of composite materials. The light-weight high-strength composite material comprises the following raw materials in parts by weight: 30-50 parts of carbon fibers, 20-40 parts of glass fibers, 5-10 parts of nano silicon dioxide, 20-30 parts of polyamide, 40-60 parts of epoxy resin, 5-10 parts of a curing agent, 2-5 parts of a coupling agent, 3-8 parts of a toughening agent and 1-3 parts of a dispersing agent. The high-strength carbon fibers and glass fibers are adopted, so that the composite material has higher tensile strength and elasticity modulus, the high-strength characteristic of the material is ensured, the structure of the composite material is more compact by introducing nano silicon dioxide, and the durability and stability of the material are improved; secondly, the epoxy resin has good corrosion resistance and can protect the reinforcing material from being corroded, the service life of the composite material is prolonged, the curing agent, the coupling agent, the flexibilizer and the dispersing agent are used, the preparation process of the composite material is more efficient, and meanwhile the comprehensive performance of the material is improved.

The invention relates to the technical field of engineering plastic modification, and discloses a thermal deformation resistant engineering plastic and an air conditioner fan blade, the thermal deformation resistant engineering plastic comprises the following components: 55%-60% of polyphenylene sulfide, 20%-25% of long glass fiber, 3%-5% of nano silica, 1%-2% of a graphene filler, 8%-10% of a benzimide flexibilizer, 0.5%-1% of a cross-linking agent, and 0.2%-0.5% of an antioxidant, the invention further discloses the heat-deformation-resistant air conditioner fan blade, the heat-deformation-resistant air conditioner fan blade is prepared from the heat-deformation-resistant engineering plastic, and the preparation method of the heat-deformation-resistant air conditioner fan blade comprises the steps that the engineering plastic is subjected to injection molding through an injection molding machine, the temperature of a charging barrel is set to be 290-320 DEG C, the temperature of a mold is set to be 290-320 DEG C, and the pressure maintaining time is 15-20 seconds. The silane coupling agent is adopted to perform surface modification on the glass fiber and the nano filler, so that the problems of low high-temperature strength retention rate, poor dimensional stability and high brittleness in the prior art are effectively solved.

The invention discloses a high-strength basalt fiber drainage pipe and a production process thereof, belonging to the field of drainage pipes. The invention discloses a high-strength basalt fiber drainage pipe and a production process thereof. The inner layer and the outer layer are both composited with basalt fiber reinforcement material and high-performance polyester resin. The basalt fiber has high strength characteristics and provides good structural strength for the drainage pipe. Then, a mixture of styrene-butadiene rubber and polyurethane is used in the middle layer to form a leak-proof self-healing polymer rubber layer, so that when it is pierced by foreign objects and leaks, it can automatically repair itself by utilizing the fluidity and high viscosity of the mixture, thereby enhancing the reliability and safety of the drainage pipe and reducing the probability of leakage of the drainage pipe. A cobalt chloride component is also added to the outer layer as a leakage detection component. When leakage occurs, the cobalt chloride at the leakage port will absorb water and change color, so that the leakage can be detected more intuitively, quickly and accurately, and the problem can be discovered and handled in a timely manner.

The invention discloses a Kevlar-polybenzoxazine aerogel and a preparation method of the Kevlar-polybenzoxazine aerogel. The Kevlar-polybenzoxazine aerogel obtained by the preparation method disclosed by the invention has the characteristic of high strength. Through introduction of the Kevlar nanofibers, a cross-linked interpenetrating structure is formed between the Kevlar nanofibers and a polymer of a selected benzoxazine monomer, and the mechanical strength of the Kevlar-polybenzoxazine aerogel is further improved. Therefore, the Kevlar-polybenzoxazine aerogel prepared by the preparation method disclosed by the invention has better mechanical properties, and the compression stress can reach 3.974 MPa under the strain of 3%.

The invention discloses a red copper strip for an IGBT copper substrate and a processing method of the red copper strip, and belongs to the technical field of red copper processing. The red copper material is smelted, cast and processed into a cast ingot; heating is conducted in a stepping heating mode, the temperature range is 840-1000 DEG C, hot rolling and face milling are conducted, and a strip with the thickness being 15-20 mm is machined; rough rolling is conducted on the strip, and the strip is machined to be 3.8-4 mm in thickness through 8-pass rolling; annealing and cleaning; the cleaned strip is subjected to two-pass finish rolling, and a strip with the thickness ranging from 2.8 mm to 3.5 mm is formed; and cleaning to obtain the red copper strip for the IGBT copper substrate. The heat treatment, rough rolling and annealing processes in the red copper machining process are improved, the obtained red copper strip for the IGBT copper substrate is good in surface consistency, and the heat conduction performance is improved when the red copper strip is applied to an IGBT module.

The invention discloses a laser splicing welding joint for ultrahigh-strength hot-formed steel and a manufacturing method of the laser splicing welding joint, the welding joint comprises a base metal area and a melting area, and the base metal area and a welding line area are mainly composed of tempered martensite; the mass percent of the carbon content in the base metal area is not lower than 0.2%, and the mass percent of the average aluminum content in the weld joint area is not higher than 1.8%. The welding joint is manufactured through the following steps that a pair of high-strength steel workpieces is provided to be in butt joint to execute laser welding, and in the welding process, laser filler wire welding is adopted to obtain a preliminary welding seam; performing a quenching process on the primary welding seam to obtain a final welding seam; the quenching process comprises a heating and heat preservation stage and a cooling stage; the time for quickly transferring and cooling the welding part is t1, and the temperature of the welding part is T1; the cooling stage comprises a stage from T1 to the temperature T2 and a stage from T2 to the room temperature through slow cooling, the duration time of the rapid cooling stage is t2, and the duration time of the stage from slow cooling to the room temperature is t3.

A micro-reinforced concentric twist drill. Concentric drilling and micro-reinforcing technologies are applied to cutting faces of the twist drill, and upright micro-reinforced center drills (2) are symmetrically arranged on helical cutting faces (5) on two sides of an axial central area, and extend to the rear cutting face (5) and form drill center hole cutters (13) in a protruding manner; a micro-reinforced central cutting face (1) is arranged on the inner side of each micro-reinforced center drill (2) in a protruding manner, and the micro-reinforced central cutting face (1) extends to the axial front and intersects with the rear cutting face (5) to form a micro-reinforced central drilling edge (14) of the micro-reinforced concentric twist drill; and / or upright micro-reinforced reamers (12) are symmetrically arranged on central areas of the helical cutting faces (5) on two sides of the axial center in an integral manner; a protruding reaming cutting face (3) is formed on the inner side of each micro-reinforced reamer (12); the reaming cutting face (3) extends to the front and intersects with the rear cutting face to form a reaming cutting edge (9); and / or on two sides of the micro-reinforced concentric twist drill, in an integral manner, micro-reinforced wear-resistant grooves (16) are arranged on the helical cutting faces respectively in directions from helical cutting edges (10) to the axial center on the inner side in a recessed manner. The micro-reinforced twist drill can improve the cutting efficiency and prolong the service life.

The invention provides a method for improving the corrosion fatigue performance of aluminum and / or magnesium alloy by combining laser peening with peak aging and an aluminum and / or magnesium alloy finished product. The method comprises the following steps: S1, carrying out solution treatment on to-be-treated aluminum and / or magnesium alloy; s2, the aluminum and / or magnesium alloy subjected to solution treatment is subjected to laser shot peening treatment; and S3, the aluminum and / or magnesium alloy subjected to laser peening treatment is subjected to peak aging treatment. According to the method, the initial nanometer precipitated phase can be dissolved through the solid solution treatment to form a single-phase supersaturated solid solution, dislocation pinning can be effectively promoted through the laser shot peening treatment, more and more stable gradient dislocation structures are reserved in the subsequent peak value aging process of the aluminum and / or magnesium alloy, power is provided for nucleation and growth of the nanometer precipitated phase, and the mechanical property of the aluminum and / or magnesium alloy is improved. And a surface layer overaging state-core peak aging state continuous transition structure is constructed in combination with subsequent peak aging treatment, and the continuous transition structure endows the aluminum and / or magnesium alloy with corrosion fatigue resistance and high strength characteristics.

A golf club head alloy is provided to solve the problem that the existing alloy cannot be used to make a striking face plate. The golf club head alloy includes 11-13% by weight of molybdenum, 5-7% of zirconium, 0.5-2.5% of iron and 3-4% of aluminum, and the golf club head alloy further includes a balanced amount of titanium and inevitable impurities. Through the above-mentioned composition, the hard and brittle phase of the golf club head alloy can be reduced, so that the striking face plate made of the golf club head alloy can pass the golf ball impact test, and whether the striking face plate is heat treated is determined according to the needs of the user, so that the striking face plate can have high rebound performance or high strength characteristics. The present application also relates to a method for manufacturing a golf club head from the golf alloy.

This invention relates to charging pile cables and charging gun connection assemblies, belonging to the technical field of new energy vehicle charging equipment. Addressing the problem of loosening and detachment in existing charging gun and cable connections, it provides a solution. The solution includes a cable body comprising a cable core, which includes a power cable, a signal transmission cable, and a control cable. An insulation layer, an armor layer, and a sheath layer are sequentially wrapped around the cable core. A fiberglass layer fills the gap between the insulation layer and the cable core. The connection assembly uses a threaded ring, an mounting ring, and the charging gun body to form a three-section threaded connection structure, locked by a ring fitted onto the charging gun body. Annularly arranged inserts on the sidewall of the ring engage with corresponding slots on the threaded ring. Combined with a spring-driven automatic reset mechanism and an L-shaped groove guide structure, this ensures that the threaded ring cannot rotate or loosen after connection. This solution effectively solves the problem of easy failure in traditional locking block connections through dual improvements in the locking structure and cable protection layer.

The present invention discloses a laminated hybrid composite wing structure. The ribs, trusses and spars are located inside the wing skin shell, the ribs are evenly spaced on the spars along the length direction of the spars, the ribs are connected by trusses, and the outer periphery of the ribs is close to the inner side of the wing skin shell; the wing structure is installed on the fuselage of the aircraft through one end of the spar as the side wing of the aircraft. The wing structure of the present invention introduces hybrid composite materials into the optimized design of the wing, which can meet the comprehensive requirements of the cost, weight and performance of the wing structure, and can improve the strength and vibration characteristics of the wing structure without increasing the cost, and achieve the lightweight requirements, thereby improving the flight efficiency of the aircraft.

The invention relates to the technical field of box culvert structures, in particular to a UHPC steel bar box culvert structure and a prefabrication method thereof. The box culvert main body is mainly formed by pouring a cementing material, aggregate, filler, an additive, water and ultra-high performance concrete added with mixed fibers. The structural strength is improved by adjusting the water-binder ratio of concrete raw materials, the structural density is reduced by using pre-wetted shale ceramsite, hollow glass beads and other light materials in the concrete raw materials, and the tensile property of the structure is improved by optimizing the adding proportion of steel fibers and polypropylene fibers. In the prefabrication process, an overturning inner mold is adopted as a reinforcing steel bar binding platform, and high-temperature steam is used for concrete curing. Through the optimization, the high-strength characteristic of the concrete box culvert is ensured, meanwhile, the overall density and the wall thickness of the box culvert are effectively reduced, and the tensile capacity of the box culvert structure is remarkably improved.

The utility model discloses a paper film for pouring concrete, and belongs to the technical field of concrete forming. The paper film comprises a paper film main body, wherein the paper film main body comprises a waterproof film layer, a craft paper layer, a first plastic bonding layer, a wire clamping layer, a second plastic bonding layer and an aluminum laminated film layer; and an aluminum laminated film layer is arranged on the outer side of the second plastic bonding layer. The paper film is simple in overall structure, easy to form and low in use cost, the aluminum laminated film layer can resist aging and can provide low moisture permeability for the paper film body, the craft paper layer serves as a main pressure bearing layer, the overall thickness and stiffness can be increased, the paper film is not prone to breakage, and the strength requirement in the concrete pouring and forming process can be met; the wire clamping layer is used for enhancing the performance and prolonging the service life of the paper film main body, the strength characteristic of the paper film main body can be obviously improved, and the external expansion resistance is increased, so that the paper film main body is high in strength and toughness, can be applied to building construction, and has a good market prospect.

The present application relates to the technical field of fiber material, in particular to a kind of flexible nickel-titanium base alloy superfine fiber material and its preparation method, comprising the following weight parts raw materials: 60-80 parts nickel-titanium base alloy matrix, 10-20 parts nano composite reinforcing phase, 3-8 parts interface agent, 3-5 parts toughening agent, 1-3 parts surface modification auxiliary agent.The present application, nano composite reinforcing phase adopts yttrium oxide coated titanium carbide core-shell structure, while enhancing matrix effectively prevents interface reaction;Interface agent is treated by mechanical alloying of titanium-based amorphous alloy and active metal, which significantly improves the interface bonding strength of reinforcing phase and matrix;Toughening agent is treated by plastic metal particles on surface coating, which significantly improves the toughness of the material under the premise of strengthening, so that the finally prepared superfine fiber material has excellent strength, toughness and flexibility.

The invention belongs to the technical field of high polymer materials, and particularly relates to a composite aerogel material as well as a preparation method and application thereof. The composite aerogel material has a core-shell structure and comprises aerogel and an organic silicon resin coating layer coating the surface of the aerogel, the coverage rate of the organic silicon resin coating layer on the surface of the aerogel is greater than or equal to 90%. The filling amount of the aerogel in low-specific-gravity products such as low-specific-gravity pouring sealants and low-specific-gravity coatings can be increased, meanwhile, the low-specific-gravity characteristic is kept, and the defects that traditional aerogel is difficult to fill, low in strength, prone to structural damage and the like are overcome.

The present invention relates to an austenitic steel material suitable for use in various fields such as the energy industry and shipbuilding, and a method for manufacturing the same, and more particularly, to an austenitic steel material which can be used in a structure requiring high strength and excellent hydrogen embrittlement resistance, and a method for manufacturing the same, for example, a hull requiring high strength and excellent non-magnetic properties, a steel pipe or facility for transporting crude oil having a high hydrogen sulfide content, and the like.

The present invention relates to a polymer solid electrolyte and an all solid state battery comprising same. When the polymer solid electrolyte is prepared, an ion-conductive polymer and polymer particles having a density similar to that of the ion-conductive polymer are used as a raw material so as to increase the uniformity of the prepared polymer solid electrolyte, and thus improve the strength thereof.

This invention provides a Gr / Al-Mg2Si-Mg composite powder, its preparation method, alloy components, and end products. The composite powder comprises 6.0%~14.0% Mg, 1.0%~6.0% Si, 0.1%~0.6% Mn, 0.1%~0.2% Ti, 0.28%~0.32% Al-5Ti-B, 1.0%~8.0% Mg2Si, and 0.5%~3% graphene Gr, with the balance being Al. By increasing the Mg content and adding a small amount of Si, the content of the Mg2Si reinforcing phase is increased. Simultaneously, in addition to introducing small amounts of Mn and Ti, graphene Gr is introduced as a reinforcement to significantly improve mechanical properties. Through forming processes such as selective laser melting, alloy components with high yield strength, high tensile strength, and high elongation can be formed, filling the gap in low-cost, high-strength aluminum alloy systems produced by selective laser melting.

The invention discloses a wavelength conversion assembly, a light source device and a lighting device. The wavelength conversion assembly includes a substrate having a first pit; the fluorescent particles and the adhesive phase cover the first pit to form the fluorescent material layer; the fluorescent material layer is used for receiving the exciting light and generating excited light based on the exciting light; the fluorescent material layer comprises N areas distributed from the center position of the first pit to the edge position of the first pit, and N is a positive integer greater than or equal to 2; a first area located at the center position of the first pit has a first thickness, and an Nth area located at the edge position of the first pit has an Nth thickness; multiplying the first thickness by the unit area to obtain a first volume, and multiplying the Nth thickness by the unit area to obtain an Nth volume; wherein the content of fluorescent particles in the first volume is higher than the content of fluorescent particles in the Nth volume. The intensity characteristics of the incident excitation light are matched by controlling the fluorescent particle content in the first volume and the Nth volume.

The invention belongs to the technical field of ceramic matrix composite materials, and particularly relates to a SiC-W2B5 / C composite material and a preparation method thereof. Comprising the following steps: (1) mixing tungsten carbide, boron carbide, calcined petroleum coke, silicon powder and a ball milling dispersant, placing the mixture in a ball mill for ball milling, and drying and sieving after ball milling to obtain raw material powder; (2) putting the raw material powder into a graphite mold, and carrying out hot pressing reaction sintering in a sintering furnace to obtain a SiC-W2B5 / C composite material; wherein the content of SiC accounts for 5-30 vol.% of the total amount of the SiC-W2B5 / C composite material. The Si powder and the C phase react to generate SiC, in the sintering process, Si can serve as a high-temperature liquid phase, the sintering temperature is reduced, the density of the composite material is improved, meanwhile, the SiC phase generated through the reaction enhances the interface bonding force, and then the mechanical property of the composite material is improved.

The invention discloses a bearing inner ring and grinding undercut machining method, which comprises the following specific machining steps: step 1, a technician sets working parameters of a PLC (Programmable Logic Controller), estimates I / O (Input / Output) points according to actual application requirements, considers proper allowance and carries out trial operation on a numerical control lathe; secondly, the bar is clamped and fixed through a three-jaw chuck, a milling cutter is controlled by a PLC to cut redundant outer edge materials of the bar, and the outer diameter of the bar is made to be the size needed by the bearing inner ring; thirdly, a shaft hole of the cut bar is axially cut through a numerical control lathe, the hole diameter is the inner diameter of the bearing inner ring, then the bar is radially cut according to the needed size, and a bearing inner ring blank is obtained; and fourthly, the inner ring blank is installed on a five-axis rotary table through a three-jaw chuck. A V-shaped vertical cutter is adopted for hard turning of the grinding undercut between the step face and the bearing inner ring, turning blind areas can be reduced to the maximum extent, and the machining efficiency and quality of the grinding undercut are improved.

The utility model relates to a kind of wind turbine blade cover plate safety fixing device, including fixed plate and bolt welded and fixed on fixed plate, the fixed plate is located in fan blade, the bolt is sequentially threaded through the manhole around the end of fan blade and the bolt hole corresponding one-to-one on blade cover plate after being fixed by nut, the utility model sequentially threads the bolt in fan blade through the manhole around the end of fan blade and the bolt hole corresponding one-to-one on blade cover plate after being fixed by nut on fixed plate, so that the manhole around the end of fan blade does not need to be embedded bolt also can realize the safety fixation between blade cover plate, can effectively solve the safety fixation problem of blade cover plate after embedded bolt relaxation or drop.

The invention discloses a high-strength bearing ring production process which comprises the following specific production process steps: step 1, selecting a bearing ring production bar material, inspecting the bar material by an inspector, carrying out pilot run on production equipment, and carrying out technical disclosure to a worker; secondly, the bar is subjected to cold drawing through cold drawing equipment, the outer diameter of the bar is made to be the size needed by the bearing ring, then the bar obtained after cold drawing is subjected to axial drilling through a numerical control lathe, the hole diameter is the inner diameter of the bearing ring, then the bar is subjected to radial cutting according to the needed size, and a blank is obtained; and thirdly, the blank obtained in the second step is subjected to electric induction heating treatment before forging, so that the plasticity of the blank is improved, the deformation resistance is reduced, and the heated raw material is upset on a forging hammer. And a large dependent variable is accumulated in the bearing ring, so that grain refinement is realized, the high-strength characteristic is obtained, the yield strength is greatly improved, the bearing ring is difficult to deform and durable, and the service life of the bearing ring is effectively prolonged.

This invention relates to the field of polymer materials technology and discloses a high-strength composite plastic sheet and its preparation method. The composite sheet, by weight, comprises 65-75 parts low-density polyethylene, 3-5 parts maleic anhydride-grafted polyethylene, 2-4 parts modified polyethersulfone, and 1-3 parts boron-modified silane, supplemented with antioxidant 1010 and calcium stearate. The modified polyethersulfone is obtained through imidazole functionalization, quaternized alkenyl modification, and free radical graft copolymerization. The boron-modified silane is obtained by dehydration condensation of hydroxyl-terminated polydimethylsiloxane and boric acid. This invention uses a casting process to prepare the finished product. The multi-component synergistic construction of a rigid-reinforced and flexible-toughened multi-level structure improves the sheet's mechanical strength and impact toughness, while also imparting excellent long-lasting antibacterial properties. The preparation process is controllable and suitable for industrial-scale production.

The invention discloses an alumina ceramic ball with a communicated micropore structure and a preparation method and application thereof, and relates to the technical field of catalyst carriers. The ceramic ball takes aluminum oxide as a main raw material, and the content of the aluminum oxide is greater than or equal to 90wt%; mutually communicated micropores are formed in the ceramic ball, the diameter of the micropores is 0.1-2 microns, and the aperture deviation is less than or equal to 15%; the specific surface area of the ceramic ball is greater than or equal to 300m < 2 > / g, the porosity is 30-50%, and the compressive strength is The ceramic ball successfully realizes ideal combination of a high specific surface area and a high strength characteristic, and provides a huge loading space and rich reaction active sites for a catalyst; meanwhile, the compressive strength can still be kept at 150 MPa or above, and the porosity is 30%-50%, which shows that the material has an extremely high specific surface area, the skeleton structure is still compact and firm, and the common technical contradiction of low strength caused by high porosity of a porous material is effectively overcome.

The utility model discloses an asphalt mixture production system, which comprises a first wet grinding device, a second wet grinding device, a third wet grinding device and a fourth wet grinding device, the second wet grinding equipment is used for grinding and mixing the coarse aggregate and the asphalt into a second mixture comprising the fine aggregate and the asphalt; the third wet grinding equipment is used for grinding and mixing the fine aggregate and the asphalt into a third mixture comprising fine filler and the asphalt; and the mixing equipment is used for mixing the asphalt, the additive, the first mixture output by the first wet grinding equipment, the second mixture output by the second wet grinding equipment and the third mixture output by the third wet grinding equipment to obtain the asphalt mixture. The asphalt mixture production system is simple in structure, low in equipment investment and operation cost, more energy-saving and environment-friendly, capable of remarkably improving the mixing effect of the asphalt mixture and improving the pavement construction quality and efficiency, and high in practicability.

This utility model discloses a scrapped car tire dismantling device, relating to the field of scrapped car tire recycling technology. The device includes a base with a rotating rod rotatably connected to it. A hub is bolted to the upper end of the rotating rod, and a tire is fitted onto the hub. A worm gear is fixedly installed at the lower end of the rotating rod. A gearbox and a stepper motor are fixedly installed at the bottom of the base. The output shaft of the stepper motor extends into the gearbox and is fixedly connected to a worm. The worm gear and worm mesh and transmit power within the gearbox. A dismantling execution component is fixedly installed on the base. The wedge-shaped design of the pry plate, combined with a fine-tuning hinge, allows for precise insertion into the gap between the tire and the hub, avoiding excessive damage to both and facilitating subsequent recycling. The lever amplifies force by forming a fulcrum through a support column. A servo motor, driven by an active pulley, a synchronous belt, and a driven pulley, drives a drum to wind and unwind a steel cable, providing a stable electric pulling force to adapt to different dismantling difficulty scenarios and reduce manual labor intensity.