28results about How to "High surface hardness" patented technology

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.

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 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.

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.

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.

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.

The application provides application of a boronizing agent in a surface boronizing process of martensitic stainless steel; the boronizing agent comprises 5-20 parts by weight of a boron supplier, 5-20 parts by weight of an activator and 60-90 parts by weight of a filler in terms of mass fraction. The application also provides a corresponding surface boronizing method of martensitic stainless steel. The application realizes vacuum solid surface boronizing treatment of martensitic stainless steel, improves surface hardness, does not affect core hardness, improves wear resistance and prolongs the service life of products. The application has low boronizing temperature, small material heat influence, achieves the effect of "surface hard and core soft", and the vacuum solid powder boronizing process is simple, convenient to operate, environment-friendly and suitable for batch industrial production.

The utility model relates to the field of torsion limiter, especially one -way torsion limiter convenient to overhaul. Including driving shaft, driving shaft cover is equipped with copper ring, tablet, disc spring, fixed sheet, copper ring cover is equipped with first friction piece, sprocket and second friction piece, and sprocket both ends are respectively with first friction piece and second friction piece mutually cooperate, and tablet and second friction piece mutually cooperate, and disc spring and tablet are engaged, and fixed sheet and disc spring mutually cooperate, and driving shaft is connected with end cover, and end cover is connected with bolt, and bolt and fixed sheet resist, and driving shaft is connected with ratchet wheel, and sprocket rotatably connects with stand, and stand is connected with pawl, and sprocket detachably connects with vertical plate, and vertical plate is connected with spring no.

The utility model discloses a kind of comminution cutting device on cutting type water pump, including cutting cutter, cutting tool bit, pump body, motor rotating shaft, impeller, fastening screw rod, blade and cutting edge, the cutting tool bit is connected with motor rotating shaft by inlaying fastening screw rod, the surface of cutting cutter is with center as origin annular array distribution has inner ring cutter hole and outer ring cutter hole, the water suction opening of pump body is provided with annular chute, cutting cutter is fixed in pump body by fastening screw, motor rotating shaft is locked after penetrating pump body with cutting tool bit by fastening screw rod.The utility model cutting tool bit is connected with motor rotating shaft by completely embedded fastening screw rod, screw rod outer surface is not protruding on tool bit end face, from structure, eliminate long fiber winding risk, guarantee equipment continuous operation, cutting cutter is with center as origin annular distribution inner ring cutter hole and outer ring cutter hole, form multilayer cutting area, cooperate the rotary motion of cutting tool bit, significantly increase the contact frequency of sundries and cutting edge, improve comminution efficiency.

This invention discloses a low-carbon foamed concrete wall panel production device and method. The production device includes a water storage tank for providing foaming liquid, a carbon dioxide foaming machine and an air foaming machine for generating gas-water solution foam through liquid foaming, a foamed concrete mixer for mixing the corresponding gas-water solution foam with concrete raw materials, and a wall panel mold frame for casting foamed concrete wall panels. The wall panel mold frame includes a movable base, several wall panel partitions arranged parallel to each other on the movable base, forming side plates arranged perpendicular to the wall panel partitions, and a curing mechanism for curing during the wall panel casting process. This invention can produce lightweight foamed concrete wall panel products with higher strength and denser structure, while increasing the carbon dioxide sequestration capacity, achieving high-efficiency and energy-saving production.

The invention discloses a high-temperature high-pressure high-wear-resistance micro-scanning polar plate structure which comprises a polar plate body, the polar plate body is sequentially composed of a main wear-resistant layer, a main pressure-bearing layer and an insulating coating from outside to inside, a polar plate cover plate is fixedly connected to the face, close to the insulating coating, of the polar plate body through bolts, and a wear-resistant structure is arranged on the outer surface of the main wear-resistant layer. An electric buckle assembly is installed on the outer surface of the main abrasion-resistant layer, and the abrasion-resistant structure comprises a plurality of irregular abrasion-resistant belts arranged on the two sides of the main abrasion-resistant layer. The invention further discloses a manufacturing method of the high-temperature, high-pressure and high-wear-resistance micro-scanning polar plate structure. According to the high-temperature high-pressure high-wear-resistance micro-scanning polar plate structure and the manufacturing method thereof, the problem of unstable insulation caused by unreliable sealing of the existing polar plate structure at high temperature and high pressure is solved.

The application relates to the technical field of material crushing, in particular to a preparation method of a high-wear-resistance and high-toughness crusher blade and the obtained blade, and the preparation method comprises the following steps: blanking a steel billet into a steel block and forging the steel block into a circular ring, rough machining, quenching and tempering heat treatment and fine machining are performed on the upper and lower surfaces of the circular ring, so that the upper and lower surfaces of the circular ring are flat and have a hardness of HRC 28-32; an induction coil is prepared, the upper and lower surfaces of the circular ring are subjected to induction quenching treatment, so that the surface hardness of the circular ring reaches HRC 58-62; a plurality of teeth are machined in the circumferential direction of the circular ring to obtain a preform; a profiled coil is prepared, and the teeth are subjected to induction quenching treatment, so that the hardness of the side surfaces of the teeth reaches HRC 58-62; the preform is subjected to grinding and a spline hole or a hexagonal hole is machined to obtain the high-wear-resistance and high-toughness crusher blade; the application can obtain the crusher blade which has high surface hardness, high wear resistance, toughness in the core and does not break and fail when crushing hard objects.

This utility model discloses a high-strength composite structure drill bit, relating to the field of drill bit technology, comprising: a reinforcing rod; a cutting assembly disposed on the outer circumference of the reinforcing rod; a fixing assembly disposed on the outer circumference of the reinforcing rod and the cutting assembly for fixing the reinforcing rod and the cutting assembly; and a composite layer disposed on the surface of the cutting assembly for high-strength protection. This utility model, by setting auxiliary spiral grooves and gradually decreasing the spiral angle from the bottom to the top of the drill bit, optimizes the guidance and discharge path of waste chips according to the needs of different stages during drilling. This not only improves chip removal efficiency and reduces pressure backflow caused by waste chip blockage, but also enhances drilling speed and the stability of the drilling process.

This utility model relates to an alloy cutting tooth that can prevent the alloy teeth of a hobbing cutter from deflecting during hard rock operations. It belongs to the technical field of alloy cutting teeth and includes a hobbing alloy tooth body. The bottom of the hobbing alloy tooth body is provided with an anti-rotation misalignment structure to prevent rotational displacement. The anti-rotation misalignment structure includes eight anti-rotation torque ridges fixedly connected to the lower surface of the hobbing alloy tooth body. This alloy cutting tooth, which prevents the hobbing alloy tooth from deflecting during hard rock operations, allows the hobbing alloy tooth body to penetrate deeply into the cutter head magazine by setting the anti-rotation torque ridges, effectively preventing the hobbing alloy tooth body from deflecting and misaligning. This effectively solves the problem of inefficient rock cutting due to cutter head edge misalignment, without increasing production costs. An insert groove is provided to facilitate the hot-pressing of the hobbing alloy tooth body into the cutter head magazine.

This utility model discloses a bending-resistant sound barrier column, including a base, a bending-resistant structure installed at the top of the base, and a protective structure installed at the top of the bending-resistant structure. The bending-resistant structure includes a pre-embedded steel plate set at the top of the base, with screw holes on the surface of the pre-embedded steel plate. Screws are installed inside the screw holes, with a main nut installed at the top of the screw and a secondary nut installed at the top of the main nut. A straight side plate is installed at the top of the pre-embedded steel plate, and a column is installed on one side of the straight side plate. Longitudinal reinforcing plates are installed on both sides inside the column. This utility model allows for precise adjustment of the preload by tightening the main nut and secondary nut using a torque method. The contact surfaces of the main nut and secondary nut generate additional frictional resistance, effectively resisting loosening between the internal and external threads. The straight side plate and the arc-shaped side plate are welded to both sides of the column to form a streamlined surface, reducing wind resistance or fluid resistance.

The application discloses a metal tantalum surface superhard ceramic permeation layer, a preparation method and a metal tantalum material. The metal tantalum substrate is embedded into a permeation agent, and a boron tantalum compound is generated on the surface of the metal tantalum by heat preservation in a vacuum or a protective atmosphere at 1200-1600 DEG C, so that a wear-resistant and corrosion-resistant superhard ceramic phase boride permeation layer is obtained. The permeation layer has excellent comprehensive performance and superhigh surface hardness, and the surface hardness can reach HV1520-HV3200. The thickness of the superhard ceramic permeation layer can be adjusted in the range of 10-100 microns. The bonding strength between the boron permeation layer and the substrate is high, and the bonding force is in the range of 20-35 N. In addition, the permeation layer has superior corrosion resistance, and the corrosion rate in a high-temperature molten cerium is in the range of 0.0630-0.0885 microns / h.

This utility model discloses a laptop screen frame with UV-printed patterns on a fiberglass board surface. The frame includes a main body, comprising an upper frame, a lower frame, and a middle frame. The upper frame is located at the top of the middle frame, and the lower frame is located at the bottom. A positioning groove is installed on the inner side of the main body. A composite UV-printed film is positioned on the upper surface of the main body. The composite UV-printed film includes a fiberglass board, an upper fiberglass mesh pattern, UV resin, a lower fiberglass mesh pattern, UV-printing resin, and a base film. The UV-printing resin is located on the surface of the base film. This utility model discloses a laptop screen frame with UV-printed patterns on a fiberglass board surface. The fiberglass board is cut into slices, and the surface is printed with a fiberglass mesh pattern to facilitate UV resin adhesion. After baking, UV-printed resin is applied to create a special surface texture, increasing surface hardness and providing scratch resistance and an aesthetically pleasing appearance.

This application relates to the field of heat treatment processing technology, and provides a novel medium-frequency quenching equipment for binding rods, including a front material rack, a processing chamber, a rear material rack, a clamping mechanism, and a quenching mechanism. At least two sets of material support racks are provided in the processing chamber. The clamping mechanism is used to transfer binding rods from the front material rack to the material support racks, and to transfer binding rods from the material support racks to the rear material rack. The quenching mechanism includes a movable structure installed in the processing chamber and a heating coil installed on the movable structure. The movable structure is used to fit the heating coil onto the outer wall of the binding rod. The material support rack includes a first support frame, a second support frame, and a switching structure. The switching structure is used to allow the first / second support frame to support the binding rod. This novel medium-frequency quenching equipment for binding rods reduces reliance on deep furnaces, facilitates heating operations on the quenching equipment, and also simplifies equipment maintenance.

This invention relates to the field of functional film preparation technology, specifically to a method for preparing a wear-resistant, stain-resistant, transparent, and slip-resistant film, comprising a wear-resistant and hardening primer, a slip-resistant and transparent intermediate layer, and a wear-resistant and stain-resistant topcoat. The wear-resistant and hardening primer comprises hydroxyethyl acrylate modified amino resin, polyurethane oligomer, trimethylolpropane triacrylate, 1,6-hexanediol diacrylate, a mixed solvent, KH560 silane coupling agent, nano-alumina, polytetrafluoroethylene micropowder, photoinitiator 1173, silicone leveling agent, and isocyanate curing agent. The mixed solvent is composed of ethyl acetate and ethanol. This invention employs a three-layer synergistic coating system, significantly improving the bonding stability between the coating and the substrate, as well as between the coating layers, through functional differentiation design and interface optimization of the primer, intermediate layer, and topcoat.

This invention belongs to the field of thermoplastic polyurethane resins and provides a scratch-resistant polyurethane engineering plastic polymerized from the following raw materials by weight percentage: 45wt%–68wt% rigid diisocyanate, 32wt%–55wt% small molecule diol, and 10–2000ppm catalyst. This invention, through polymer structure design, introduces a large number of high-rigidity groups into the main chain, fundamentally solving the problem of low surface hardness of the material while retaining the structural characteristics of polyurethane. The product obtained by this invention possesses the high permeability, high strength, and high toughness of polyurethane engineering plastics, while also exhibiting high surface hardness, meeting the requirements of various easily worn and scratched exterior parts.

The utility model provides a kind of positioning device of mould, belong to mould manufacturing technical field, the positioning device of this mould includes positioning seat body, positioning column, adjusting mechanism, locking mechanism and guiding mechanism;Positioning seat body is hollow cylinder, bottom is equipped with bottom surface, and circular through-hole is opened in the center of bottom surface;Stepped positioning column is composed of lower section cylinder and the upper section cylinder of greater diameter;Adjusting mechanism contains adjusting seat and adjusting screw rod, adjusting seat is fixed in seat body side wall, adjusting screw rod passes through adjusting seat and extends into seat body interior, and its end abuts on the side wall of upper section cylinder to adjust height;Locking mechanism is composed of locking bolt and locking block, locking block is placed in seat body, locking bolt is connected with locking block by thread in radial through seat body side wall, and locking block inner arc surface and upper section cylinder outer wall are pasted to realize lock solid;Guiding mechanism contains guide sleeve and guide rod, guide sleeve is fixed in seat body top end, guide rod passes through guide sleeve and is fixedly connected with the top end of upper section cylinder, and it is ensured that column lifting direction is accurate and unbiased.

The utility model discloses a multilayer reinforced protection type packing carton, including the box body, the top of box body is provided with the box cover, the box body and box cover all include white cardboard layer, the surface fixedly connected with corrugated paperboard layer of white cardboard layer, one side of corrugated paperboard layer is provided with first function layer, first function layer includes honeycomb paperboard layer and EVA bubble cotton layer, one side of first function layer is provided with second function layer. The utility model discloses through setting up corrugated paperboard layer, utilizes the mechanical characteristic of corrugated structure, promotes the compression strength and the bending resistance of packing, supports the stacking weight, disperses external pressure, reduces local stress deformation, especially suitable for heavy object packing or transportation scene, through setting up honeycomb paperboard layer, the honeycomb three -dimensional structure provides excellent compression resistance and impact resistance, effectively absorbs external impact force, light in weight but high in strength, can promote the protection effect under the premise of not increasing packing weight, is suitable for transportation scene.

The utility model discloses a kind of high wear resistance pull rivet nuts, it includes nut main body, embedded reinforcing ring, elastic support piece and surface hardening layer.Nut main body is cylindrical structure, outer wall is equipped with recess, top embedded hard alloy reinforcing ring, bottom is equipped with elastic support piece, outer surface covers titanium nitride coating.This application can significantly improve the anti-wear ability of nut in repeated disassembly, stress is dispersed by recess, reinforcing ring improves hardness, elastic support piece absorbs impact energy, and surface hardening layer is used to reduce friction coefficient, to extend service life and enhance connection stability, suitable for high-frequency maintenance and harsh working condition scene.