777 results about "Low friction" patented technology

The invention discloses a flexible pressure sensor with a multistage hemispherical structure and a preparation method thereof, the sensor comprises an electrode layer, and an upper friction layer, a separation layer and a lower friction layer which are sequentially arranged below the electrode layer from top to bottom, the separation layer is used for providing a space for full contact and separation of the upper friction layer and the lower friction layer, and the separation layer is used for providing a space for full contact and separation of the upper friction layer and the lower friction layer. And the lower friction layer is formed by a multi-stage hemispherical structure constructed on the surface of a flexible film. The sensor has the remarkable effects that benefited from the characteristics of a triboelectric sensing mechanism, the sensor has the advantages of self power supply, stable output and simple structure, and meanwhile, the upper friction layer and the lower friction layer of the sensor are in step-by-step contact under the action of pressure through the surface microstructure of the lower friction layer of the multi-stage hemispherical structure; the compressibility is enhanced, and the contact and separation process of the sensor is optimized, so that the sensitivity of the sensor is improved.

An absorbent repositioning pad includes an upper layer including a liquid permeable material, and a lower layer having relatively lower friction surface than the upper layer. The absorbent repositioning pad further includes a first intermediate layer between the upper and lower layers and including an absorbent material, and a second intermediate layer between the first intermediate layer and the lower layer and including a liquid impermeable material.

An anti-ligature door handle is disclosed. The door handle assembly includes a handle, an escutcheon, and a PTFE coating. The door handle assembly is constructed in a manner where a cord or rope cannot readily be anchored to any surface. This is due to the sloping geometry of the door handle assembly along with the low friction coating. The low friction coating may be a sintered and skived sheet of PTFE or a sprayed layer of PTFE that ensures sufficient strength, resilience, and friction properties when applied.

The invention discloses a three-coordinate measuring machine re-measurement system and a control method, and belongs to the technical field of three-coordinate measurement, the three-coordinate measuring machine re-measurement system comprises a support, a workbench, a portal frame, a detection system, a first electric telescopic rod, a second electric telescopic rod, a third electric telescopic rod, a sliding rail, an adjusting column and a gradienter, and further comprises a main control module and a control logic module, the control logic module controls the three-coordinate measuring machine to execute a measuring task through electric connection, ceramic shells are arranged on the surfaces of the portal frame, the connecting frame, the sliding clamping block and the sliding rail, and the characteristics of high rigidity and low expansion coefficient of ceramic materials are utilized, so that deformation of a traditional metal structure caused by temperature change or long-term friction is avoided. Friction loss is reduced while the contact area is reduced, and the track precision when the portal frame translates along the X axis is ensured. The rigid support of the ceramic shell enables the equipment not to depend on a strict constant temperature environment, eliminates a thermal deformation error source from the mechanical structure level, and improves the measurement stability in a complex environment.

The invention relates to the field of screw forming, and discloses a screw cold heading forming process which is characterized by comprising the following steps: step 1, wire preparation and surface pretreatment: based on the requirement of screw forming on the surface quality of raw materials, a metal wire is treated by adopting a mechanical wiredrawing and chemical phosphating and saponifying composite process, and the surface of the metal wire is treated; surface oxide skin is removed, a lubricating film layer is formed, and the forming flowability and the service life of the die in the subsequent cold heading process are effectively improved. A raw material is subjected to spheroidizing annealing treatment in a continuous spheroidizing annealing furnace, internal pearlite is converted into spherical cementite, the ductility and deformation uniformity of the material are improved, then a continuous wire drawing machine is adopted for multi-stage drawing diameter reduction, a three-stage chemical phosphating-saponification treatment process is matched, a low-friction and high-adhesion lubricating film layer is formed, and the service life of the lubricating film layer is prolonged. And a stable material basis and a lubricating environment are provided for the subsequent cold heading process, so that the problems that the friction resistance generated in the forming process of a screw material is large, and a mold is quickly worn are solved.

A cover for a support surface includes: a ticking made of a ticking material configured to enclose a support layer of the support surface, the ticking having an outer top surface configured to face a person lying on the support surface; and a friction reducing overlay on at least a portion of the outer top surface for facilitating displacement of the person on the support surface, the friction reducing overlay being made of a low friction material formed onto the ticking material, the friction reducing overlay comprising a plurality of overlay elements that are spaced apart from each other to form an overlay pattern.

An internal floating piston (IFP) having circumferential seal groove 2 on its external surface between two walls 3, 4 of the external surface, and an anti-tipping feature 8 increasing a length of said

The invention provides a gradient self-repairing sealing coating and a preparation method thereof, and relates to a high-temperature protection material. The gradient self-repairing sealing coating comprises a bonding layer, a gradient middle layer, a transition layer and an abradable surface layer which are sequentially arranged from a base body to the surface. A bonding layer in the gradient self-repairing sealing coating contains silicate, so that the bonding strength and the heat-resistant stability of a matrix are improved; rare earth silicate and Ir elements are introduced into the gradient intermediate layer, so that high-temperature corrosion resistance is enhanced, and thermal stress is relieved; the transition layer contains zirconium oxide and graphene and has the functions of thermal isolation and stress regulation; the abradable surface layer is formed by combining rare earth silicate and graphite, low friction and preferential abrasion are achieved, and effective sacrifice protection is provided. The overall structure can have multiple properties of heat, corrosion resistance and abrasion resistance, and is suitable for the surface protection requirement under the complex hot end working condition.

The present invention pertains to a wear pad for a telescopic boom of a work machine, comprising a base part configured to be fixedly mounted to the telescopic boom, and a top layer part configured to provide a wear-resistant, low friction sliding surface. The top layer part is configured to be releasably mounted to the base part. The invention further pertains to a telescopic boom assembly for a work machine, comprising a first boom segment having at least one first wear pad assembly mounted to a free end of the first boom segment, and a second boom segment having at least one second wear pad assembly mounted to a sliding end of the second boom segment, wherein at least one of the wear pad assemblies comprise a wear pad having a base part and a top layer part configured to provide a wear-resistant, low friction sliding surface. The top layer part is configured to be releasably mounted to the base part. Further, the present invention pertains to a work machine comprising such telescopic boom assembly.

The invention discloses a DLC coating with a gradient composite structure and a surface microstructure and a preparation method of the DLC coating, and belongs to the technical field of hard alloy tool surface treatment. The coating comprises a transition layer, a DLC gradient layer and a laser microstructure layer arranged on the outer surface of a DLC main coating, the transition layer is composed of Cr layers and CrN layers which are alternately stacked; the sp3 bond content of the DLC gradient layer is gradually increased in the direction from the transition layer to the outer surface of the DLC gradient layer, and the W element content in the DLC gradient layer is gradually decreased in the direction from the transition layer to the outer surface of the DLC gradient layer; the laser micro-texture layer is composed of a hexagonal honeycomb-shaped densely-arranged pit array. The coating system has the characteristics of high interface bonding strength and ultralow friction, and the service life of the hard alloy cutter can be remarkably prolonged when the coating system is applied to the surface of the hard alloy cutter.

A motion simulator system is disclosed that includes a freely rotatable movable frame supported by, but unattached to, a hemispherical base. The movable frame comprises a spherical enclosure constructed from rigid, lightweight materials such as composite materials or interlocking panels, providing unlimited 360-degree rotation in all three rotational degrees of freedom (pitch, roll, and yaw). An internal actuator system coupled to the movable frame controls attitude positioning while the center of rotation remains substantially fixed relative to the base. Low friction engagement between the movable frame and base is achieved through transfer bearings integrated into the base's outer surface or by pressure-vented air cushions. The system enables smooth, continuous rotation of the untethered movable frame for enhanced motion simulation applications.

The invention provides a low-heat-generation self-lubricating oil seal rubber material and a preparation method thereof. The rubber material comprises the following components in parts by weight: 100 parts of main rubber, 3-6 parts of zinc oxide, 1-3 parts of an anti-aging agent, 1-3 parts of solid marone indene resin, 3-8 parts of a self-repairing lubricant, 5-25 parts of a reinforcing agent, 70-100 parts of diatomite, 5-15 parts of a plasticizer, 1-5 parts of tetrafluoroethylene, 1-3 parts of stearic acid, 1-3 parts of a flow promoter, 0.2-0.5 part of sulfur and 1-2 parts of an accelerant. The nano silicon dioxide-ionic liquid composite material is added into the oil seal rubber material as a self-repairing lubricant, and the ionic liquid of the composite material can form a lubricating film on a friction interface, so that the friction coefficient is reduced, the self-lubricating effect is realized, and the dynamic temperature rise is reduced; in addition, the ionic liquid can also cover a damaged area and repair microscopic cracks; meanwhile, after the self-repairing lubricant is dispersed, a heat conduction network can be formed, and heat generation is reduced.

The application belongs to the technical field of surface modification, and discloses a method for constructing a ceramic-based self-lubricating, high-wear-resistant and strong-corrosion-resistant coating based on thermal spraying technology and application. The method uses a thermal sprayed ceramic coating as a template, introduces a solid-liquid reversible lubricating phase, and after being heated and melted, the solid-liquid reversible lubricating phase is penetrated into inherent pores and micro / nano cracks in the ceramic coating through a vacuum impregnation process, and is solidified and retained in the defects after cooling, so that a new ceramic-based self-lubricating and strong-corrosion-resistant composite coating is finally obtained. The preparation method is simple, fast and efficient, and does not affect the mechanical properties of the ceramic coating, and the ceramic-based self-lubricating and strong-corrosion-resistant composite coating has low friction coefficient and excellent wear resistance and corrosion resistance.

The invention discloses a strong-combination wide-temperature-range wear-resistant composite coating, and relates to the technical field of solid lubricating materials, the composite coating comprises a transition layer, a functional inner layer, a diffusion barrier layer and a functional outer layer which are sequentially formed on the surface of a matrix, the transition layer is a Mo layer and a Mo2N layer, the functional inner layer is a MoAgN layer, the diffusion barrier layer is a Mo2N layer, the functional outer layer is a MoAgN layer, and the functional inner layer is a MoAgN layer. The functional outer layer is a MoAgN layer, and the MoAgN layer comprises a Mo2N phase and an Ag phase. The invention further discloses a preparation method of the composite coating and application of the composite coating in the field of solid lubrication protection. The composite coating is good in film-substrate binding force and low in friction coefficient and wear rate in a wide temperature range, damage to key mechanical parts in the air foil bearing caused by high-temperature lubrication failure can be avoided, and the tribological performance of the bearing parts under the working condition of the wide temperature range is improved.

The invention discloses an electroplated part, an electroplated part manufacturing method and a connector. The electroplated part comprises a base material; a nickel plating layer formed on the surface of the base material; the tin-graphite composite plating layer is formed on the nickel plating layer; the nickel plating layer is formed on the base material, the tin-graphite composite plating layer is formed on the nickel plating layer, the tin plating layer is formed on the tin-graphite composite plating layer, the nickel plating layer serves as a bottom plating layer of the base material, the tin plating layer serves as an outer plating layer of the base material, and the tin-graphite composite plating layer serves as a middle plating layer of the base material. According to the invention, the graphite particles exposed from the tin-graphite composite coating are partially or completely wrapped by the outermost tin coating, so that the graphite particles are not easy to fall off, the wear resistance and corrosion resistance of the electroplated part are improved, and the service life of the electroplated part is prolonged. In addition, the plating layer structure also has a relatively low friction coefficient, so that the insertion and extraction force of the electroplated part in the use process can be greatly reduced.

The present invention discloses a high temperature wear-resistant self-lubricating boron-doped diamond-like coating and its preparation method and application, belonging to the technical field of coating materials. The boron-doped diamond-like coating comprises a Cr base layer deposited on the surface of a substrate, a Cr x B y C z Gradient transition layer and B-DLC functional layer; Cr base layer thickness is 0.15μm~0.25μm, Cr mass percentage is 99.5%~99.99%; Cr x B y C z The gradient transition layer has a thickness of 0.05μm to 0.10μm, a Cr mass percentage greater than 0 and ≤ 99.99%, and a B mass percentage greater than 0 and ≤ 8%. The B-DLC functional layer has a thickness of 0.8μm to 2.0μm, and a B mass percentage of 3% to 5%. This boron-doped diamond-like coating combines high hardness, high toughness, and low friction, exhibiting excellent self-lubrication and wear resistance in high-temperature atmospheric environments of 400-500°C.

The invention discloses a black phosphorus-based composite material as well as a preparation method and application thereof, and relates to the technical field of black phosphorus materials. The black phosphorus-based composite material is prepared from the following raw materials: black phosphorus, nano ferroferric oxide and dopamine hydrochloride. The dopamine hydrochloride is subjected to in-situ polymerization to form polydopamine. The obtained black phosphorus-based composite material has a low friction coefficient and an excellent lubricating effect, can be used for preparing a lubricant, for example, as a lubricating additive in lubricating oil or lubricating grease, effectively improves the friction performance of the lubricant, improves the lubricating effect of the lubricant, and is suitable for lubrication of mechanical parts.

It is an object to provide a coating material having heat resistance, adhesion resistance, durability, chemical resistance, low friction, and releaseability applied to a base material, and to provide a manufacturing method and manufacturing system for such a coating material. A ternary nanocoposite coating material comprising C—F—H or C—F—Si applied to a base material is disclosed.

The invention provides a high-performance nylon material and a preparation method thereof. The high-performance nylon material comprises the following components in parts by weight: 30-65 parts of polyamide 66; 5 to 25 parts of special nylon resin; 30 to 35 parts of glass fiber; 0.2 to 0.4 part of an antioxidant; 0.4 to 0.8 part of a lubricant; 1 to 3 parts of compatilizer; 5-15 parts of a wear-resistant auxiliary agent; 0.6 to 1.0 part of a weather-proof auxiliary agent; and 0.3 to 0.7 part of black master batch. The nylon material prepared by the invention is suitable for performance requirements of outdoor precision bearings, and has excellent performances of low friction coefficient, low abrasion, high strength, high modulus, long-period weather resistance, long-period high temperature and high humidity resistance and the like.

The utility model discloses a beveling machine facilitating collection of ceramic composite pipe chippings, and relates to the technical field of pipe machining. Comprising a supporting seat which serves as a base of the beveling machine and is fixed to the ground; a driving motor; the clamping device is used for clamping and fixing the workpiece; the outer wall of the clamping device is fixedly connected with the outer wall of the driving motor, the outer wall of the clamping device is rotatably connected with a rotating disc, the outer wall of the rotating disc is slidably connected with an adjusting block, the outer wall of the adjusting block is fixedly connected with a cutter, and the top of the supporting seat is fixedly connected with a water spraying structure. The water spraying structure sprays water to the contact position of the cutter and the ceramic composite pipe in the machining process, high temperature generated by friction is effectively reduced, the service life of the cutter is prolonged, meanwhile, chippings are flushed away in time, the machining area is kept clean, it is guaranteed that a spray head is always aligned with the contact position through the telescopic water pipe, and the cooling and chipping cleaning effect is improved; and the application range of the equipment is expanded.

The invention discloses a thin and thick paper tension stabilizing traction device, which relates to the technical field of paper traction, and comprises a bearing frame, a paper feeding roller, a threaded paper spreading and passing roller, a tension roller and a tension sensor, a swing mechanism is arranged in the bearing frame and comprises an air cylinder displacement sensor, an ultra-low friction swing rod air cylinder, a swing roller, a swing roller force arm, a swing roller balance weight rod, a low-tension position hole and a high-tension position hole, the low-tension position hole and the high-tension position hole are formed in the side edge of the swing roller force arm, and the swing roller and the swing roller balance weight rod are installed on the side edge of the swing roller force arm. Paper flattening is achieved by means of thread structures of the thread paper unfolding and passing roller and the paper feeding roller, and initial tension of different pieces of paper is accurately detected in cooperation with a tension sensor. Through the combination of the swing roller balance weight lever, the ultralow friction swing rod cylinder and the low / high tension position hole, the tension can be flexibly adjusted to adapt to different characteristics of thick paper and thin paper, and the problem that the tension of the thick paper is insufficient or the thin paper is excessively stretched is solved.

A treadmill includes a walking board assembly, and a walking belt encircling the walking board assembly. The walking board assembly includes a support plate, a wear-resistant plate mounted on the support plate, and a wax layer mounted on the wear-resistant plate. The wear-resistant plate is made of wear-resistant material with a low friction coefficient. The wear-resistant plate has a bottom face abutting the top face of the support plate. The wear-resistant plate has a top face integrally formed with multiple grooves. The wear-resistant plate has a thickness less than that of the support plate. The wax layer is coated on and filled with the grooves of the wear-resistant plate. The wax layer has a coating height at least equal to the depth of each of the grooves.

A joint restraint assembly for a pipe, the joint restraint assembly including an annular body, and a wedge assembly received within an opening of a wedge housing of the annular body. The wedge assembly includes a bolt including a flange, and a low-friction material positioned between the flange and an interior surface of the wedge housing, which low-friction material is adapted to slidably engage the interior surface during relative movement between the wedge assembly and the wedge housing. A wedge member is attached to the bolt so that the flange is positioned between at least a portion of the low-friction material and at least a portion of the wedge member. The wedge member is adapted to engage the pipe.

The invention provides a welding wire drawing forming device with a quality monitoring function, and relates to the technical field of welding wire machining. A vertical plate is fixed to the fixing table, a first motor is installed on the vertical plate through a bolt, a variable-diameter cylinder is installed on the fixing table through a bearing, a through hole in the left-right direction is formed in the variable-diameter cylinder, five sets of radial through holes are formed in the variable-diameter cylinder, internal threads are arranged in the five sets of radial through holes, and variable-diameter bases are installed in the five sets of radial through holes. The apertures of the five groups of reducing seats are sequentially reduced from left to right; five groups of reducing seats can be flexibly replaced, precise wire drawing and specification adaptation are realized, a visual detector and a full-material sensor cooperate, the quality and the winding state are monitored in an omnibearing manner, a plurality of motors control a powder sprayer in a linkage manner, precise powder spraying is realized, friction and energy consumption are reduced, the service life of a mold is prolonged, a ninth motor drives a cutting knife to perform automatic cutting, and the production efficiency is improved. And multiple functions are integrated, one-stop machining is achieved, and the production efficiency is effectively improved.

The invention relates to the technical field of cutter coatings and surface coatings, in particular to a high-temperature self-lubricating wear-resistant nano-composite oxynitride coating and a preparation method and application thereof.The coating is prepared through the multi-arc ion plating technology, and the preparation method comprises the steps that Ar < + > ion bombardment, Cr < + > ion implantation and CrN transition layer deposition are sequentially conducted on a base body; and finally, by changing the partial pressure of oxygen in the mixed gas in the chamber, the AlCrVSiON functional coatings with different oxygen contents are deposited. According to the invention, V is added into the AlCrSiN coating, so that the coating generates a Magneli phase under high temperature or friction to form a self-lubricating layer, the friction coefficient is effectively reduced, and the friction performance is improved. Meanwhile, due to the addition of the element O, the coating has good high-temperature oxidation resistance and stable high-temperature mechanical property, and the defects that the mechanical property is reduced and the wear rate is increased due to coating oxidation at high temperature are overcome, so that the coating can be applied to the field of high-temperature cutting.

The invention relates to the technical field of track operation, and discloses a full-automatic track bolt operation maintenance device which comprises a track body, a bottom framework is arranged at the top of the track body, a control box is arranged at the top of the bottom framework, batteries are arranged at the positions, located on the two sides of the control box, of the top of the bottom framework, and a positioning sensor is further arranged on the bottom framework. Two first L-shaped plates are symmetrically distributed on one side of the bottom of the bottom framework, and a positioning wheel is arranged between the two first L-shaped plates. According to the full-automatic track bolt operation maintenance device, through the collaborative design of the positioning unit and the execution assembly, the operation safety problem under the ice surface low-friction environment is fundamentally solved. After the sucker of the positioning assembly is adsorbed on the track, the sucker and the positioning wheel can fix the bottom framework together, so that the device is prevented from slipping or displacing when bolt torque is applied, the phenomenon of false tightening is completely eradicated, namely the situation that the recorded torque of the device reaches the standard but effective torque is not actually applied to the bolt is prevented, and the potential safety hazard of line operation is eliminated.

The invention relates to the technical field of desiccant packaging equipment, and discloses a desiccant packaging supply film forming device which comprises a packaging forming device and a regulation and control conveying mechanism installed on the packaging forming device. Comprising a first rotating shaft fixedly connected with the packaging forming device and a first friction roller fixed to the first rotating shaft. Each of the two second friction assemblies comprises a second friction roller mounted on the first rotating shaft; the moving assembly is used for controlling the two second friction rollers to move; the heat dissipation assembly works in cooperation with the moving assembly and is used for enabling two second friction rollers to move in opposite directions through the moving assembly according to the friction coefficient needed by the packaging film and the material of the packaging film, and the contact area between the two second friction rollers and the packaging film is changed; for a smooth PE film, the contact area is reduced, and the friction force is reduced; for rough composite aluminum films, the contact area is increased, the friction force is improved, film material slipping or tensile deformation is avoided, and the film supply stability is ensured.

A conductive self-lubricating bearing based on a metal mesh extension structure and a preparation method thereof, the conductive self-lubricating bearing based on a metal mesh extension structure includes a body and a through hole. The body includes a low-friction layer and a conductive mesh. The conductive mesh has a plurality of mesh holes arranged in an array. The conductive mesh is embedded in the low-friction layer and part of the conductive mesh is evenly exposed on one end face of the low-friction layer. The exposed part is a conductive contact and is used to contact an external workpiece. The low-friction layer is provided with an end face that exposes the conductive mesh as a conductive surface, and the other end face of the low-friction layer is a non-conductive surface. The through hole is formed by punching out the conductive surface. During punching, the conductive mesh located in the through hole is extended to the non-conductive surface, allowing the internal and external workpieces of the body to pass current, thereby realizing the integrated processing of the through hole and the metal mesh extension, eliminating the secondary processing step of the notch.

The invention discloses motor controller circuit board manufacturing and processing equipment, and belongs to the field of circuit board manufacturing and processing. The electric track is assembled on the top of the base; the air exhaust assembly is assembled on the top of the base; the electric sliding block is assembled on the inner wall of the electric track; the heating cover is assembled at the bottom of the electric sliding block; an elastic telescopic rod is assembled at the top of the electric sliding block, a pressing plate is fixedly connected to the bottom of the elastic telescopic rod, and a moving block is slidably connected to the bottom of the inner wall of the base. Through the synergistic effect of the electric sliding block, the elastic telescopic rod, the pressing plate and other structures, it is ensured that the pressing plate evenly applies pressure to the circuit board at the downward pressing moment, the problems of small interlayer friction force and poor shearing force resistance are solved, therefore, movement of the top layer circuit board is avoided, it is ensured that prepregs can be fully melted before being heated, even heating of resin is ensured, and the service life of the circuit board is prolonged. And the production efficiency and the quality of the circuit board are improved.

The invention provides an epoxy resin wear-resistant coating and a preparation method thereof, and belongs to the technical field of polymer composite materials. The epoxy resin wear-resistant coating is prepared from the following raw materials in parts by mass: 100 parts of epoxy resin, 2 to 20 parts of composite filler, 5 to 30 parts of curing agent, 0.2 to 4 parts of defoaming agent and 0.5 to 5 parts of flatting agent, the composite filler is PTFE and a modified inorganic filler; the modified inorganic filler is a compound system of modified nano SiO2, modified nano ZnO, modified MoS2 and modified nano Al2O3. According to the invention, the antifriction material and the reinforcing material are compounded, and the silane coupling agent is used for surface modification, so that firm combination of the filler and the epoxy resin matrix is realized. MoS2 and PTFE provide a continuous lubricating effect, and the friction coefficient is reduced; the hardness, the strength and the bearing capacity of the coating are remarkably improved through the nano oxide particles, and the coating has the characteristics of low friction and high wear resistance through the synergistic effect of the nano oxide particles and the coating.