72results about How to "High surface hardness" patented technology

The invention relates to high-strength and high-ductility wear-resistant medium manganese steel and a preparation method thereof, belongs to the technical field of ferrous metallurgy, and aims to solve at least one of the problems that in the prior art, medium manganese steel is low in initial yield strength and difficult to meet the application requirements of high-wear-resistant parts, high plasticity and high wear resistance are difficult to consider, and long-term stable service is difficult to realize in a high-wear environment. The invention relates to wear-resistant medium manganese steel with high product of strength and elongation. The medium manganese steel comprises the following chemical components in percentage by mass: 0.35%-0.45% of C, 0.75%-1.25% of Si, 8.5%-11.5% of Mn and the balance of Fe and inevitable impurities. By optimizing the alloy design of the medium-manganese wear-resistant steel, the limitation of insufficient initial hardness of the traditional medium-manganese steel is overcome, so that the medium-manganese steel can have higher surface hardness in a non-work-hardening stage, thereby showing excellent wear resistance in the initial service stage of a structural part; and the problem of high wear rate caused by insufficient hardness of the traditional high / medium manganese steel at the initial stage of wear is effectively avoided.

This invention provides a QPQ surface strengthening method for flexible and rigid wheels in harmonic reducers, comprising the following steps: after machining the flexible or rigid wheel, it is sequentially degreased, cleaned, dried, and preheated; the preheated flexible or rigid wheel is nitrided to form a nitrided layer on its surface; the surface of the flexible or rigid wheel is treated mechanically or by tumbling; the polished flexible or rigid wheel is placed in molten oxide salt for oxidation treatment to form an oxide layer on the surface of the nitrided layer; after the oxidized flexible or rigid wheel is air-cooled, it is immediately rinsed with clean water and dried with hot air, and then coated with anti-rust oil. Compared with the prior art, this invention uses low-temperature salt bath nitriding and oxidation treatment, the QPQ process is short, has fewer process steps and is easy to control, and the salt bath can be recycled. The surface hardness of the workpiece reaches 800-850 HV, and the wear rate is reduced by more than 70% compared with the traditional tempering process, significantly extending the service life of the workpiece.

The utility model discloses a self-lubricating sealing support mechanism, which comprises a transmission sealing sleeve, a support sleeve, a sealing cover, a bearing, a first sealing ring and a second sealing ring, the support sleeve and the sealing cover are respectively sleeved outside a transmission shaft and are detachably connected together, the transmission sealing sleeve is sleeved between the transmission shaft and the support sleeve, and the bearing is arranged on the support sleeve. The transmission sealing sleeve, the supporting sleeve and the sealing cover jointly limit the bearing arranged outside the transmission shaft in a sleeving mode, the bearing is communicated to an oil cavity of the gear oil tank, the first sealing ring is sealed between the transmission shaft and the transmission sealing sleeve, the second sealing ring is sealed between the transmission sealing sleeve and the supporting sleeve, the bearing does not need to be lubricated manually at regular intervals, and the working efficiency is improved. And self-lubrication of the bearing can be realized.

This invention discloses a multi-process synergistic method for strengthening and toughening titanium alloys. The method includes: firstly, pre-treating the titanium alloy surface with sandblasting; then, subjecting the pre-treated titanium alloy to solid embedding carburizing treatment; subsequently, under inert atmosphere protection, sequentially subjecting the carburized titanium alloy to solution treatment, rapid cryogenic treatment, and aging treatment; and finally, shot peening the surface of the heat-treated titanium alloy. This invention solves the problem in existing technologies where a single process is insufficient to synergistically improve the strength and toughness of titanium alloys, achieving a synergistic match between high strength and high hardness on the surface of the titanium alloy material and high toughness in the matrix.

According to the effluent pump for the alkylation device, a gap between a throat shaft sleeve and a throat lining, a gap between a first-stage shell wear ring and a first-stage impeller wear ring, a gap between an interstage shaft sleeve and an interstage lining and a gap between a balance shaft sleeve and a balance sleeve are arranged; and gaps between the secondary shell wear ring and the secondary impeller wear ring are modified, so that heat generated by an overflowing part can be dissipated in an accelerated manner, the situation that equipment is damaged due to the fact that a rotating part and the wear rings are heated to expand and stick to each other due to short-time flow insufficiency is effectively avoided, and meanwhile, the service life of the equipment is prolonged. And the situation that equipment is damaged due to local overheating caused by partial flow channel blockage due to too small interstage gaps of large-particle impurities carried in a medium can be avoided.

The invention discloses a high-simulation and high-performance stone-imitating bright ceramic tile which sequentially comprises a high-strength green body layer, a functional ground glaze layer, a multi-mode digital texture layer, an interface strengthening-optical adaptation transition layer and a high-transmittance protective glaze layer from bottom to top. The raw materials of the high-strength green body layer comprise spodumene tailing powder and a compound of zirconium silicate and zinc oxide serving as a sintering aid, the water absorption rate is smaller than or equal to 0.2% after sintering, the fracture modulus is larger than or equal to 42 MPa, the high-strength green body layer is covered with the functional ground coat layer, and the raw materials of the functional ground coat layer comprise a porous forming agent and active components capable of reacting with follow-up ink. According to the invention, through multi-modal data acquisition and morphology channel printing, full-dimensional physical recarving of natural stone from macroscopic color veins to micro-crystal fluctuations is realized, and high-refractive-index ink and an interface strengthening-optical adaptation transition layer are combined, so that the appearance of the natural stone is enhanced. The product can present the specific deep feeling, moist feeling and mineral crystal flash of natural stone under any illumination, and the vivid degree which is difficult to distinguish by naked eyes is achieved.

The invention discloses a cavitation shot peening surface strengthening method and system based on cooperation of high hydrostatic pressure and spherical focused ultrasound. The method comprises the following steps: establishing and maintaining a hydrostatic pressure environment higher than 0.1 MPa in a high-pressure processing cavity filled with a degassing liquid medium; the to-be-machined surface of the workpiece is positioned in a sound field focal region of the spherical focused ultrasound transducer; and in the high hydrostatic pressure environment, a transducer is driven to work so as to generate a cavitation bubble group in a space confinement range in a focal region of the transducer, and meanwhile, the workpiece is controlled to move according to a preset path, so that cavitation collapse impact acts on a target region on the surface of the workpiece. The device comprises a high-pressure processing cavity, a spherical focused ultrasonic transducer, a multi-degree-of-freedom movement mechanism and a control system. Through cooperation of high hydrostatic pressure constraint and the spherical focusing sound field, precise localization and energy strengthening of the cavitation effect are achieved, a plastic deformation layer can be efficiently and controllably introduced to the surface of a metal material, the surface hardness can be remarkably improved, a residual compressive stress layer is formed, surface layer grains are refined, and the method is suitable for precise surface strengthening of complex components.

The application discloses a method for improving the surface quality and performance of a laser cladding NiCrSiBC-WC composite coating, relates to the field of composite coating surface processing technology, and aims at solving the problem that the coating prepared through single laser cladding is prone to cracks. The method comprises the following steps: S1, pretreatment of a base material; S2, preparation of laser cladding powder; S3, laser cladding treatment; S4, temperature field auxiliary treatment; and S5, laser remelting composite temperature field auxiliary treatment. The laser remelting composite temperature field auxiliary technology can break the limitation of the WC material addition amount on the performance of the coating, and a low-WC-mass-fraction high-hardness crack-free NiCrSiBC-WC composite coating can be obtained through the technology. The structure compactness of the NiCrSiBC-WC coating is improved, and the surface hardness and bonding force of the coating are improved.

This invention relates to the field of metal surface strengthening technology, specifically a method for in-situ generation of TiC-TiN ceramic materials using a titanium-containing substrate and an atmosphere-assisted high-energy beam. This method utilizes the titanium-containing substrate itself as a titanium source. Under a specific atmosphere, high-energy beam irradiation causes the Ti element in the substrate to react in-situ with C and N elements in the atmosphere, generating a TiC and / or TiN ceramic strengthening layer on the substrate surface. Specifically, the method includes: pretreating the titanium-containing substrate; placing it in a reaction chamber and introducing an auxiliary gas containing C and / or N; scanning and irradiating the substrate surface with a high-energy beam, controlling process parameters to allow Ti to react with C and N, generating a 0.5-1.2 mm thick metallurgically bonded strengthening layer. The advantages are: this invention eliminates the need for additional titanium powder or carbon powder, resulting in a simple and low-cost process; the strengthened layer exhibits high bonding strength with the substrate with no risk of detachment; and it significantly improves the surface hardness, wear resistance, and corrosion resistance of the substrate, making it widely applicable in military, aerospace, and marine equipment fields.

This invention discloses a machining process for precision screws, belonging to the field of mechanical manufacturing technology. It includes the following steps: S1, rough machining and forming: treating the surface of the bar stock and machining functional slot structures, followed by pre-deburring; S2, structural strengthening: heat-treating the workpiece for strengthening; S3, precision finishing: correcting the form and position tolerances of the heat-treated workpiece and precision grinding each surface; S4, quality assurance delivery: completing inspection, cleaning, and packaging. This process flow is clear, employing a logical arrangement of "forming first, then strengthening, and then fine-tuning," resulting in a workpiece with not only a high-hardness surface but also improved coaxiality of its stepped axis and thread trajectory accuracy. This significantly enhances the screw's operational stability at high speeds. Furthermore, through staged quality control and precision correction, it improves the first-pass yield of the workpiece and reduces the risk of scrap due to heat treatment deformation, possessing extremely high industrial application value.

The utility model provides a traditional Chinese medicine pill making device which comprises a box body, a feed opening, a pressing chamber and a pill making assembly, the pressing chamber is arranged in the box body and comprises a transverse pressing chamber and a longitudinal pressing chamber, the longitudinal pressing chamber is communicated with the transverse pressing chamber, and the pill making assembly is arranged in the box body. The discharging opening communicates with the end, away from the longitudinal pressing chamber, of the transverse pressing chamber. A transverse spiral feeding shaft is arranged in the transverse pressing chamber, and a longitudinal spiral feeding shaft is arranged in the longitudinal pressing chamber; the pelleting assembly comprises an extrusion head, a heat dissipation pipe and a cutting head. The cooling pipe is arranged between the extrusion head and the cutting head, medicine mud enters the cooling pipe in a long-strip shape through the extrusion head and then reaches the cutting head to be cut into pills, the cooling pipe can cool the long-strip-shaped medicine mud, the viscidity of the medicine mud is reduced, follow-up cutting is facilitated, pill shaping is accelerated, the surface hardness of pills is improved, and the pills are prevented from adhering to the collecting hopper. The collection is convenient.

The application discloses a kind of high-performance outdoor full package imitation wood composite board and preparation method thereof, relate to polyurethane composite board technical field, the full package imitation wood composite board includes base board, and the polyurethane material of setting in the lower surface and the four around of base board, and the resin material of setting in upper surface.Its preparation method includes the following steps: pouring polyurethane material in the silica gel mould after surface treatment, place base board, mould pressing, make the polyurethane material with wood texture around and lower surface of base board composite, obtain intermediate product A;Resin material is rolled on the upper surface of intermediate product A, and is dried, to obtain full package imitation wood composite board;The silica gel mould after surface treatment is prepared by transferring real solid wood board texture.

This application relates to a waste edge tray structure for a rapier loom, belonging to the field of loom technology. The waste edge tray structure includes a support, a fixed shaft, a tray body, and a limiting member. The support extends along the height direction; one end of the fixed shaft is fixed to the support, and the other end extends horizontally. The fixed shaft is manufactured by hard chrome plating; the tray body is I-shaped and sleeved on the fixed shaft, with yarn wound around it. The yarn can be pulled out by the loom, thereby driving the tray body to rotate; the limiting member is sleeved on the other end of the fixed shaft and restricts the movement of the tray body. This application addresses the problem that current rapier looms use a steel shaft as the support shaft for the waste edge tray, resulting in high friction and easy wear.

The invention relates to the technical field of manufacturing of metal composite materials, and discloses a corrosion-resistant and wear-resistant bimetal composite cylinder liner which is prepared through the following steps that the inner wall of an outer-layer matrix steel pipe is pretreated and coated with an interface activation flux; raw materials containing waste steel, ferrochrome and the like are molten, ferrotitanium and ferroboron are sequentially added for alloying, then ferric oxide powder and metal yttrium are added for modification treatment, and inner-layer alloy liquid is obtained; the preheated outer-layer matrix steel pipe is placed in a rotating state, and the inner-layer alloy liquid is poured; and after the to-be-solidified pipe fitting is cooled to the room temperature, the pipe fitting is heated to the austenitizing temperature, heat preservation is conducted, and then isothermal quenching treatment is conducted. According to the method, interface oxides are effectively removed and firm metallurgical bonding is promoted by utilizing the interface activation flux; a core is formed through in-situ reaction of metal yttrium and ferric oxide so as to refine grains; and a lower bainite and retained austenite mixed structure is obtained through isothermal quenching, the comprehensive mechanical property of the cylinder sleeve is improved, and the service life of the cylinder sleeve is prolonged.

The invention discloses a nitride ceramic particle reinforced electric vehicle battery pack bottom protection plate and a manufacturing method thereof, and belongs to the field of electric vehicle battery technology and vehicle manufacturing. According to the method, a CrMoAl steel sheet is adopted, the surface of the sheet is polished to remove the oxidation condition, nitriding process treatment is conducted in a gas nitriding furnace, a sample is taken out after the sample is cooled to the room temperature along with the furnace, and the nitride ceramic particle reinforced electric automobile battery pack bottom protection plate is obtained. Ultra-deep nitriding layers are formed on the two sides of the steel plate through nitride ceramic particle reinforcement, a non-nitriding layer is formed in the middle of the steel plate, and a nitriding layer-non-nitriding layer-nitriding layer sandwich structure is formed; due to the existence of the double-layer nitriding layer and the middle non-nitriding layer, the steel plate has high hardness and obdurability at the same time, when the steel plate is applied to the electric automobile bottom protection plate, the conditions of gravel splashing, road surface fluctuation and bumping and the like caused by the external environment can be borne, and damage to a battery pack due to the conditions of bending, breakage and the like of the steel plate can be prevented.

The application relates to the technical field of hoisting belts, and provides a flexible bearing material for a fatigue-resistant high-strength hoisting tool and a preparation method thereof. The material takes UHMWPE fibers or aramid fibers as a substrate, is activated by low-temperature oxygen plasma, is sequentially subjected to glycidyl methacrylate grafting to introduce epoxy sites, end-amino hyperbranched PAMAM chain extension to construct a multistage active interface, is subjected to a silane coupling agent containing a benzotriazole group to construct a weather-resistant layer, is then loaded with a negative nano-titanium dioxide and polyethylene imine composite system, and is finally crosslinked and solidified by ethylene glycol diglycidyl ether. The application strengthens the interface bonding force through a multistage covalent bonding surface modification structure, simultaneously improves the fatigue resistance, weather resistance and wear resistance of the material, and solves the problems of weak interface bonding of existing hoisting bearing materials, easy wear and aging in cyclic service, and short fatigue life.

The application discloses a kind of phosphogypsum road base water stable material and its construction method, by weight fraction, including calcined phosphogypsum 300~2000 parts, cement clinker 300~2000 parts, limestone 50~500 parts, toughening agent 1~10 parts, high-strength water-resistant agent 10~200 parts, sodium bentonite 50~100 parts, glass fiber 1~10 parts;The high-strength water-resistant agent is magnesium chloride, magnesium oxide, dimethyl chlorosilane is added with 1:1:0.05~0.5, the toughening agent is polyvinyl alcohol and EVA is mixed with 1:0.5~1 to form.The water stable material produced by using industrial by-product phosphogypsum calcined building gypsum as raw material has strong water resistance, high compressive strength and surface hardness, and is resistant to cracking caused by expansion;After premixing at construction site, road construction is carried out, the setting time meets the construction requirements, the water-soluble fluorine ion concentration of road surface is less than 3.50mg / L, water-soluble phosphorus pentoxide is not detected, the liquid leached under rainwater washing has no environmental pollution, the water stable material of the application enables the engineering of solid waste to be batched, and realizes the maximum resource utilization of phosphogypsum.

The invention belongs to the technical field of zirconium-niobium alloys, and discloses a heat treatment method for synchronously improving the strength and plasticity of a zirconium-niobium alloy formed by melting a laser powder bed and the performance of a surface ceramic layer. The method comprises the following steps: putting the zirconium-niobium alloy formed by melting in a laser powder bed into a heat treatment furnace, and keeping the temperature of 650-750 DEG C for 10-30 minutes in an atmospheric environment; cooling to 550 to 650 DEG C, and keeping the temperature for 20 to 60 minutes; continuously cooling to 400 DEG C to 500 DEG C, and keeping the temperature for 20 to 60 minutes; and circulating and repeating, and cooling to room temperature along with the furnace. According to the method, strengthening and toughening of the alloy matrix and preparation of the surface high-performance ceramic layer are synchronously achieved, the microhardness of the treated alloy surface is greatly improved, a thick compact oxide layer is formed, the tensile strength loss is reduced to the minimum, the percentage elongation after fracture is greatly improved, and the service life of the alloy is prolonged. The problem that the'strong plasticity 'and the'wear resistance' of the zirconium-niobium alloy in the traditional process are difficult to synergistically improve is solved.

This invention provides a biocompatible β This invention relates to a method for composite modification of titanium alloy surfaces, belonging to the technical field of alloy modification methods. The invention includes applications in medical... β This invention involves introducing bioactive particles onto the surface of a titanium alloy substrate, performing friction stir processing (FSP) on the substrate to introduce bioactive particles and construct a gradient grain structure, and then subjecting the FSP-treated substrate to compressed plasma flow (CPF) treatment to achieve uniform distribution of bioactive particles and construct a topology with an average surface roughness of 3-6 μm suitable for cell growth. The invention precisely controls the amount of bioactive particles introduced and constructs a gradient grain structure through friction stir processing (FSP); simultaneously, compressed plasma flow (CPF) technology achieves uniform distribution of bioactive particles and an ideal surface roughness of 3-6 μm on the titanium alloy surface. Ultimately, this significantly improves the cell adhesion, proliferation capacity, and osteogenic properties of the material surface, solving the technical problem of low integration efficiency of traditional titanium alloy implants with human bone tissue.

This invention relates to the field of machining technology and discloses a multi-segment convex-concave variable diameter hollow shaft roll forming equipment and method, including a feeding mechanism, a transfer mechanism, a robot mechanism, a heating mechanism, and a roll forming machine; the transfer mechanism includes a displacement driving component, a transfer table, and a clamping and positioning component; the displacement driving component is used to drive the transfer table to move; the transfer table is provided with a semi-finished product receiving groove and a blank receiving groove, the blank receiving groove is used to receive the blank bar output by the feeding mechanism, and the semi-finished product receiving groove is used to receive the semi-finished product bar after one roll forming process; the heating mechanism is used to heat the area to be processed of the bar, and the clamping and positioning component is used to clamp the bar and drive the bar to move, switching the heating position; the invention replaces the traditional rotary forging process with hot roll forming, requiring only one set of conforming mold to complete the processing of multi-segment convex-concave variable diameter structures, and combined with a fully automated production line, significantly reduces equipment and mold costs, and the cyclic processing steps effectively improve production efficiency.

The utility model belongs to the technical field of machining, and particularly relates to a tumbling processing device for a steel pipe, which comprises a processing box body, the top end of the processing box body is fixedly connected with a feeding plate; a grinding mechanism is arranged on the inner wall of the processing box body; a vibration mechanism is arranged in the processing box body; a discharging assembly is arranged in the middle of the inner wall of the processing box body; a chip collecting mechanism is arranged at the bottom end of the processing box body; the polishing mechanism comprises a first motor, a driving shaft, a driving gear, a driven gear and a polishing roller; the first motor is fixedly connected to the side wall of the processing box body; the driving shaft penetrates through the machining box and is rotationally connected with the output end of the first motor. The driving gear and the driven gear are mutually meshed and connected; the middle part of the driving shaft is fixedly connected with a polishing roller; through the structural arrangement of the grinding rollers, the surface roughness is improved through the rolling effect, the surface hardness and the abrasion resistance are improved, meanwhile, tiny surface defects such as scratches and burrs are eliminated, and the comprehensive performance and the appearance quality of the steel pipe are improved.

The application discloses a high-end caliper stainless steel surface composite strengthening system and process, which comprises a quenching device, a tempering device, a rolling device, a high-current pulse electron beam irradiation device and an ultrasonic cleaning device. The process specifically comprises the following steps: S1, quenching treatment; S2, tempering treatment; S3, rolling treatment; S4, high-current pulse electron beam irradiation treatment; and S5, cleaning treatment. The system can perform three-blade rolling treatment on the heat-treated caliper through the rolling device, can homogenize the surface layer structure of the caliper while improving the machining efficiency, can reduce the surface roughness of the caliper, can effectively realize the overall straightening of the caliper, and can reduce the quenching deformation. After the surface modification of the caliper through the high-current pulse electron beam irradiation device, the caliper can form a surface layer with uniform composition and nanometer-sized grain refinement, can not have obvious interface between the caliper matrix and the nanometer structure surface layer, and can not easily fall off, so that the service life of the caliper is greatly prolonged.

The invention belongs to the technical field of touch screens, and particularly relates to a touch screen with a scratch-resistant coating. The touch screen is high in sensitivity, the coating prepared through hybridization of the organic silicon emulsion and the inorganic silica sol can form nanoscale honeycomb-shaped pores, the problem that a pure inorganic silicon dioxide coating is prone to cracking can be solved, the inorganic silica sol forms cross-linked silicon dioxide particles in the curing process, and when the surface of the touch screen is scratched, the surface of the touch screen is not prone to cracking. The particles can support each other, so that the surface hardness and the scratch resistance are improved; according to the glass substrate, alkali metal is replaced with boron oxide, the melting processing performance of glass is improved during glass melting, the problem of screen failure caused by rapid diffusion of alkali metal cations in the glass after the alkali metal is added is solved, the prepared glass substrate has excellent hardness due to high-content aluminum oxide, and the service life of the glass substrate is prolonged. Through zirconium dioxide, the hardness, wear resistance and chemical corrosion resistance of the glass are further improved, the impact resistance of the substrate is enhanced, and the service life of the touch screen is prolonged.

The application relates to a scratch-resistant high-impact PC alloy material and a preparation method and application thereof, and comprises the following components and weight contents: 40-60 parts of PC resin, 25-40 parts of PBT resin, 5-10 parts of a surface modifier, 5-10 parts of a composite toughening agent, 1-2 parts of a compatilizer and 0.1-1 parts of other additives. The preparation method is that the components are uniformly stirred in a mixing barrel, and are added into an extruder through a main feeding port of a double-screw extruder; the surface modifier is added into the extruder through a side feeding port of the extruder under pressure, and is granulated through extrusion to obtain a scratch-resistant high-impact PC alloy material. Compared with the prior art, the addition of the PBT resin and the surface modifier greatly improves the overall scratch resistance of the PC base material; and the addition of the composite toughening agent improves the impact resistance of the material. The PC alloy material prepared by the method has good appearance, high surface hardness and high notched impact strength, can be widely applied to small household appliance shells, automobile interior parts and other products, is low in cost and has a wide application prospect.

The application provides a high-pressure corrosion-resistant hard alloy material and a preparation method and application thereof, and belongs to the technical field of alloy materials. The application improves the strength, toughness and corrosion resistance of the material by constructing titanium boride, silicon carbide and chromium diboride hard phases, introduces a multiphase composite binder composed of aluminum-iron alloy, high-entropy alloy and cerium hexaboride to realize high-temperature dense coating, and adopts asymmetric gradient paving and sintering process to construct a gradient structure with high surface hardness, high toughness in the core and stress concentration reduction in the transition layer. Meanwhile, the surface hardness and sealing property are strengthened by powder embedding and calcination, and the wear resistance, corrosion resistance and impact resistance of the material are comprehensively improved.

This invention provides a method for surface carburizing strengthening of 1900MPa grade steel cylindrical gears. The method includes: S1: rough machining and hobbing of the cylindrical gear to meet the requirements of tooth profile tolerance, tooth direction tolerance, and roughness; S2: copper plating protection treatment on non-carburized areas; S3: lightly blowing low-pressure fine sand onto the surface of the carburized areas of the gear to give the gear surface a certain degree of activity; S4: surface carburizing strengthening of the cylindrical gear using a vacuum carburizing furnace. While improving the surface hardness of the gear, the method further controls the grain size of the gear core to improve its impact performance. Through reasonable quenching and tempering process settings, the gear achieves optimal surface hardness and core hardness matching, which is of great significance for the engineering application of materials.

This invention discloses a nanoparticle-reinforced nylon-based engineering plastic and its preparation method, belonging to the field of polymer engineering composite materials technology. The engineering plastic uses PA6 as a matrix, porous hollow ZnO nanoparticles prepared by PS template method as reinforcing fillers, supplemented with antioxidants, lubricants, and silane coupling agents, and is prepared through solvothermal reaction, calcination, acid activation, surface modification, and melt blending extrusion. This invention uses a PS microsphere template-assisted solvothermal-calcination process to prepare ZnO nanoparticles with internal cavities and abundant through-pores on the surface. After activation with dilute acetic acid and modification with KH-550, the problem of nanofiller agglomeration is effectively solved, achieving mechanical interlocking with the nylon matrix. The preparation process of this invention is controllable, and the resulting composite material, compared with pure PA6, exhibits significantly improved tensile strength and surface hardness, no significant decrease in elongation at break, and significantly optimized wear resistance. It possesses excellent overall performance and is suitable for high-end equipment structural components under high load and high friction conditions, showing promising prospects for industrial application.

The present application relates to the field of heat treatment, in particular to a P92 steel heat treatment method. The method first removes impurities on the surface of the P92 steel through chemical cleaning and mechanical polishing pretreatment; then carries out plasma atmosphere treatment to form a hardening layer in a nitrogen or other nitrogen source gas atmosphere, thereby improving the surface performance; subsequently adopts a three-stage new aging treatment to optimize the microstructure, reduce the stress difference and enhance the bonding force between the hardening layer and the matrix; then carries out quenching treatment to improve the hardness and wear resistance; then according to different performance requirements, carries out tempering treatment; and finally naturally cools to room temperature. This method can effectively solve the performance deficiency of traditional P92 steel in high temperature and high pressure environment, significantly improve the key performance indicators such as yield strength, tensile strength and impact toughness, refine the grain structure, and expand the application of P92 steel in various severe working conditions. Compared with the traditional process, the present application has obvious advantages and important industrial application value.

The utility model relates to the technical field of cooling devices, in particular to a plastic bucket forming and cooling device which comprises an operation table, an air inlet pipe is fixedly connected to the interior of the operation table, two guide columns are fixedly connected to the inner wall of the operation table, a sliding block is connected to each guide column in a sliding mode, and an air outlet pipe is fixedly connected between the two sliding blocks. A second connecting pipe is fixedly connected between the air outlet pipe and the air inlet pipe, a plurality of air nozzles are fixedly connected to the air outlet pipe, a hydraulic rod is fixedly connected to the interior of the operation table, and the telescopic end of the hydraulic rod is fixedly connected with one sliding block. Cold air blown out by an external air source flows into an air outlet pipe through an air inlet pipe and a second connecting pipe and then is evenly blown to the outer wall of the plastic bucket body through a plurality of air nozzles on the air outlet pipe, two sliding blocks drive the air outlet pipe and the air nozzles to move up and down, and therefore the upper half portion of the plastic bucket body is evenly cooled, and the service life of the plastic bucket body is prolonged. Therefore, the surface hardness is improved.

This utility model discloses a polyurethane sweeper with high wear resistance. The key technical points are that it belongs to the field of polyurethane sweepers and includes a support mechanism. A sweeping mechanism is movably connected to the inner side of the support mechanism. Protective mechanisms are fixedly connected to both ends of the sweeping mechanism. The protective mechanism includes a sliding groove located at the inner end of the support mechanism, and a buffer frame is slidably connected inside the sliding groove. By setting the buffer frame and buffer rod, when the polyurethane sweeper itself generates vibration or when there may be local jumping during belt operation, the buffer frame can cooperate with the buffer rod to buffer the movement. The buffer ring provides initial buffering for the buffer frame, and the damping component further buffers and suppresses the transmission. This prevents external forces from causing instantaneous strong impacts on the polyurethane blades during operation, reduces wear and fatigue caused by impacts or vibrations, and improves the durability and operational stability of the sweeper.