74 results about "Wear corrosion" patented technology

The invention discloses a multiphase flow wear corrosion prediction method based on CFD-DEM coupling. An industrial pipeline entity structure is obtained, and then a pipeline geometry model is constructed; acquiring particle parameters, and establishing a particle motion model in the pipeline geometry model; acquiring fluid parameters to establish a fluid motion model; carrying out coupling calculation on the particle motion model and the fluid motion model according to a preset time step length so as to obtain a particle motion model state and a fluid motion model state of each time step in a preset total time length; and carrying out loss calculation on the pipeline geometry model in combination with the wear and corrosion model to obtain a wear and corrosion loss prediction result of the pipeline geometry model. The method can accurately predict the wear and corrosion degree of the wall surface of the industrial pipeline, and has important theoretical value and engineering practical significance for reducing wear and corrosion damage and prolonging the service life of the industrial pipeline.

The invention relates to a high / low temperature wear-corrosion coupling damage test device and a quantitative evaluation method, and belongs to the technical field of wear corrosion test and material failure analysis. The device comprises a temperature-controllable corrosion test tank, a friction-wear test machine, an electrochemical workstation and a high-low temperature external circulation temperature controller, the temperature-controllable corrosion test tank is arranged on the friction-wear test machine, and friction-wear performance testing is achieved through reciprocating motion of the friction-wear test machine. And the temperature-controllable corrosion test tank is externally connected with an electrochemical workstation and a high-low temperature external circulation temperature controller and is used for testing corrosion performance and controlling temperature. According to the invention, high-precision testing and quantitative analysis of abrasion and corrosion of the metal-based material in high and low temperature environments are realized.

The utility model relates to the technical field of fluent strips, and discloses a fluent strip with an anti-abrasion structure, which comprises a support, a rolling shaft is arranged in the support, the side wall of the rolling shaft is fixedly connected with an idler wheel, two ends of the support are fixedly connected with baffles, and the baffles are fixedly connected with the support. A lubricating assembly is arranged on the inner wall of the support. According to the fluency strip with the anti-abrasion structure, lubricating oil is brought to the whole transmission part along with the movement of the pin rollers, independent oil injection or manual oil adding is not needed, the maintenance frequency and the labor cost are reduced, the slope structure of the outer ring guides external sundries not to enter a bearing area but slide to the outside of a lubricating assembly, chippings entering a bearing are reduced, and the service life of the bearing is prolonged. The lubricating oil quantity is automatically controlled, oil bubbles or over-lubrication is prevented, the oil discharge hole automatically releases oil, the oil updating function is achieved, the lubricating oil is kept clean, the lubricating reliability is improved, and the phenomena of abrasive particle abrasion, corrosion, emulsification and the like are reduced.

The utility model belongs to the technical field of loading stations, and discloses a bulkhead gate for an ore loading station. According to the bulkhead gate for the ore loading station, the gate driving mechanism drives the gate to move towards the inner end relative to the gate frame, and the gate covers the gate opening to close the gate opening; the gate driving mechanism drives the gate to move towards the outer end relative to the gate frame so that the gate opening can be opened, ore materials are unloaded and loaded through the gate opening, the portion between the first gate sliding way and the gate frame at the gate opening and the ore materials is blocked by the material blocking shell, and abrasion and corrosion of the ore materials to the first gate sliding way and the gate frame are reduced. Ore materials entering the first gate slide way are reduced, and movement blocking of the gate is avoided; the first gate slide way is detachably connected with the gate frame, the first gate slide way is convenient to maintain and replace, the first slide way is detachably connected with the first slide way supporting seat, the first slide way is convenient to maintain and replace, and the maintenance cost is also reduced.

The utility model relates to the technical field of ceramic ball valves, in particular to an integrated full-lining ceramic heat preservation jacket ball valve which comprises an integrated flange valve body, a valve body lining is installed in a cavity of the integrated flange valve body, a valve element piece is installed in the center of the interior of the valve body lining, and the valve element piece is connected with the valve body lining. A left valve seat and a right valve seat are detachably and fixedly installed in the positions, on the left side and the right side of the valve element piece, of an inner cavity of the valve body lining in a sealing fit mode respectively, a valve rod cavity is formed in the top of the middle section of the integrated flange valve body, a valve rod piece is installed in the valve rod cavity in a matched mode, and the lower end of the valve rod piece is connected with the bottom of the valve element piece. The upper end of the valve rod piece penetrates through the valve rod limiting sealing unit in the valve rod cavity and extends to the position above the valve rod limiting sealing unit. The whole flow channel in the ball valve is made of structural ceramics, a medium in the ball valve can only make contact with the surface of a ceramic piece and cannot make contact with a metal piece, and therefore the problem that an existing heat preservation jacket ball valve cannot be used under the working conditions of abrasion and corrosion can be effectively solved.

The utility model provides a bellows compensator with a protection device, and relates to the technical field of bellows compensators, the bellows compensator comprises a compensator body, the compensator body comprises a bellows body and flange plates arranged at two ends of the bellows body, a flow guide lining cylinder is arranged in the bellows body, and the flange plates are connected with the bellows body. A protective sleeve is arranged on the outer side of the corrugated pipe body. The protective corrugated pipe in the protective sleeve can provide additional protection for the corrugated pipe body, so that the corrugated pipe body is prevented from being damaged by external mechanical collision, abrasion, corrosion and the like, and the service life of the corrugated pipe is prolonged; due to the existence of the flow guide lining cylinder, a medium can be guided to flow more uniformly and stably in the corrugated pipe body, and scouring and abrasion of the medium to the inner wall of the corrugated pipe are reduced.

The invention discloses a non-uniform abrasion corrosion testing method and device for a laser alloy cladding layer, and relates to the technical field of abrasion experiments. The testing method comprises the following steps: respectively sampling a lap joint area and a non-lap joint area of a laser alloy cladding layer; the lap joint area and the non-lap joint area are tested with the same abrasion corrosion test parameters, and a first abrasion result corresponding to the lap joint area and a second abrasion result corresponding to the non-lap joint area are obtained; and according to the difference between the first wear result and the second wear result, determining a final result of wear corrosion heterogeneity of the to-be-tested sample.

The utility model discloses an anti-wear corrosion-resistant water pump, which comprises a water pump, a mounting mechanism is arranged on the water pump, the mounting mechanism comprises a water inlet pipe, a bearing section, an active plate, a conductive block, a fixing sleeve, a push spring, a top block, an insertion sleeve, a one-way sheet, an unfastening mechanism and a bearing mechanism, the water inlet pipe is arranged on the water pump, the bearing section is arranged on the water inlet pipe, and the active plate is arranged on the bearing section. The multiple active plates are installed on the conductive block, an insertion groove is formed in the bearing section, the active plates are electrically connected into the insertion groove, and the installation mechanism can transmit electrons to other parts of the water pump through the corrosion effect of the active plates, so that rust protection is achieved; and due to the arrangement of the active plate, the mounting mechanism can provide proper electric conduction and corrosion protection in the anti-rust process, so that the anti-rust effect and safety are improved.

The utility model discloses an anti-coking, impact-resistant and vibration-resistant adjusting ball valve for coal chemical industry black water, and relates to the field of adjusting ball valves. In coal chemical industry black water treatment, a black water medium has the characteristics of high suspended matter content, high temperature, high alkali content, high corrosion content and high-hardness solid particle content, and abrasion, corrosion, coking jamming and driving failure of traditional valve internals are easily caused. Comprising a fixing shaft, a left valve body, a right valve body, a left valve seat, a right valve seat, a ball body, a valve rod and an executing mechanism, the ball body, the valve seats and valve body flow channels are spray-welded with tungsten carbide layers with the hardness larger than or equal to HRC65, the left valve seat and the right valve seat achieve two-way pre-tightening sealing through spiral springs and the ball body, and scraper type cutting edges are arranged on the sealing faces of the valve seats. The valve rod adopts a large-diameter high-strength design and is in anti-rotation connection with the ball body, and the stuffing box adopts a disc spring load limiting and pressurizing structure. The wear resistance, impact resistance and coking resistance are remarkably improved, bidirectional reliable sealing is achieved, stable driving under the high-torque working condition is guaranteed, the service life of the valve is prolonged, and the valve is suitable for the coal chemical industry black water extreme working condition.

The invention discloses a layered protection structure and a numerical simulation method.The layered protection structure comprises a supporting structure, a camouflage layer, a bullet shielding layer and a dispersing layer, the camouflage layer is located on the uppermost portion of the layered protection structure, the bullet shielding layer is located on the lower portion of the camouflage layer, and the dispersing layer is located on the lower portion of the bullet shielding layer; and a steel plate layer is arranged between the dispersing layer and the bullet shielding layer. And the steel plate layer is an S22053 stainless steel layer with good corrosion fatigue resistance and wear corrosion resistance. Due to the fact that the steel plate layer is arranged and is made of a high-strength and high-toughness stainless steel plate, the steel plate layer has good ductility and corrosion resistance, can resist large weight and impact, and can be formed according to needs. The device is applied to civil air defense engineering to relieve explosion impact loads and is convenient to set and construct. The steel plate layer is arranged in the layered protection structure, so that the penetration impact resistance of the protection structure can be effectively improved, and a good attenuation effect can be achieved on displacement of the structure after the structure is subjected to an explosion impact load.

The utility model discloses a glass fiber reinforced plastic anti-static pipeline which comprises a pipe wall and conductive connecting pieces, the pipe wall is composed of a glass fiber reinforced resin matrix and comprises a corrosion-resistant lining layer, an anti-static function layer and a structural strength layer from inside to outside, and the conductive connecting pieces are arranged at the two ends of the pipe wall. And the anti-static functional layer is reliably and electrically connected with the conductive connecting pieces at the two ends of the pipe wall. According to the glass fiber reinforced plastic anti-static pipeline, the anti-static functional layer serves as an independent and key structural layer of the pipe wall instead of a surface coating, the anti-static functional layer is not prone to losing efficacy due to abrasion and corrosion, the service life is long, the anti-static capacity is high, meanwhile, the anti-static functional layer is reliably and electrically connected with the end flanges, it is ensured that static electricity is effectively guided out, and the service life is prolonged. Therefore, the anti-static performance of the glass fiber reinforced plastic pipeline is stable and reliable.

The invention relates to a high-safety molded case circuit breaker, and relates to the technical field of smart power grids, the high-safety molded case circuit breaker comprises a base and a front cover installed on the front side of the base, a protruding part is fixedly arranged on the side face, away from the base, of the front cover, and an operation handle is rotatably installed on the front side of the protruding part; a plurality of wiring notches are formed in the base, and binding posts are fixedly arranged in the wiring notches; a fixing rod is detachably installed on the back side of the base, an elastic telescopic plate is rotationally connected to the fixing rod, and the elastic telescopic plate has the active elastic shortening performance. Limiting plates are vertically and fixedly arranged on the two elastic telescopic plates, limiting insertion blocks are fixedly arranged on the side faces, close to each other, of the two limiting plates, and limiting insertion grooves are formed in the top face and the bottom face of the base. According to the application, the back side of the circuit breaker base is separated from the inner wall of the electric meter box through the fixing rod and the elastic telescopic plate made of an insulating material, so that the risks of electric leakage and short circuit caused by abrasion and corrosion of a coating are reduced fundamentally.

This invention belongs to the field of fluid transport technology and discloses a special media transport system driven by an isolated liquid column and its working method. The system includes a power unit connected to a process pipeline unit. The power unit includes a symmetrically acting pump with a first driving chamber and a second driving chamber. The first driving chamber is connected to a first transport pipe, and the second driving chamber is connected to a second transport pipe. The process pipeline unit includes a symmetrically arranged first U-shaped pipe and a second U-shaped pipe. One end of the first transport pipe is connected to one end of the first U-shaped pipe, and the other end of the second transport pipe is connected to one transport unit. The other end of the first U-shaped pipe is connected to the second transport unit. This invention has a simple overall structure, enables zero-leakage transport of special media, eliminates the need for explosion-proof motors, avoids shear damage and wear / corrosion of flow-through components, and improves performance.

SOLUTION: To provide a testing device and a method for a quantitative evaluation which realize a composite environment of stresses, frictions, and corrosion, the device and the method belonging to the field of analyzing invalidation (breakage) of a material and including a bias mechanism for applying stress to a test sample, a corrosion mechanism for running an electrochemical corrosion test on a test sample, and a friction mechanism of applying frictions on a test sample.EFFECT: The testing device for running composite actions of stresses, frictions, and corrosion of the present invention can establish a composite action test process of frictions, stresses, and corrosion, can research use behaviors of each type of metal material and a metal group composite material under an environment more similar to an actual usage condition, acquires important behavior data under composite actions for various different reasons, quantitatively analyze mutual actions of frictions, corrosion, and frictions, mutual actions of stress and frictions, and mutual actions of stresses and corrosion, clarify a damage mechanism of an important environmental factor and a material under composite actions of frictions, stress, and corrosion, and provide a foundation to construct a method for evaluating a use behavior of the material.SELECTED DRAWING: Figure 1

The utility model relates to the technical field of metal pressure processing, in particular to a flow guide optimized tube blank punching efficient top head structure which comprises a top head, and the inner wall of the top head is fixedly connected with a plurality of round fixing plates which are arranged in parallel. A good heat dissipation system can be formed by the connecting pipes on the surfaces of the round pipes, the spiral heat dissipation pipes and the partition plates in the spiral heat dissipation pipes. The heat dissipation area is increased through the spiral heat dissipation pipe, heat generated by the plug in the working process can be rapidly dissipated out, and the plug is kept within the proper working temperature range. Meanwhile, although the tungsten carbide coating on the surface of the plug is only 5 microns, tungsten carbide has the characteristics of high hardness and strong wear resistance, so that the wear resistance and corrosion resistance of the surface of the plug can be greatly enhanced, the service life of the plug is prolonged, and the problems of cost increase and production interruption caused by frequent replacement due to wear and corrosion of the plug are reduced; and continuity and stability of production are guaranteed.

The utility model relates to the technical field of dustproof devices, and discloses a grinding roller bearing box dustproof device which comprises an installation box, a plurality of sliding grooves are formed in the top end of the installation box, sliding blocks are connected into the sliding grooves in a sliding mode, and a left sliding door is fixedly connected to the top end of the sliding block on the left side. A left sliding door is fixedly connected to the top end of the left sliding block, a right sliding door is fixedly connected to the top end of the right sliding block, a plurality of clamping grooves are formed in the left sliding door, a plurality of clamping blocks are fixedly connected to the left side of the right sliding door, a collecting box is fixedly connected to the front side of the top end of the mounting box, and a filter screen is fixedly connected to the interior of the mounting box. According to the utility model, the clamping groove, the clamping block and other structures are matched for use, and the clamping block is in a wave design, so that dust, particulate matters and other impurities can be prevented from entering mechanical equipment and machine parts, the abrasion, corrosion and damage of the parts are reduced, the service life of the equipment is prolonged, and the cost for maintaining and replacing the parts is reduced.

This invention relates to the field of surface spraying technology, and discloses a thermally sprayed wear-resistant and corrosion-resistant composite coating for metal substrates and its preparation method. The method includes: degreasing, sandblasting, purging, and preheating the surface of the metal substrate; dispersing, drying, and pre-curing Cr3C2 particles in a coating slurry containing flake Cr2O3 particles, borosilicate glass particles, aluminum phosphate particles, and silica sol to obtain barrier-coated hard reinforcing particles; spraying NiCrBSi alloy powder, barrier-coated hard reinforcing particles, and Al2O3 particles into granules, followed by thermal spraying, and then impregnating and sealing under negative pressure and curing to obtain the composite coating. This invention distributes the barrier phase at the particle interface around the Cr3C2 hard phase, limiting the spread of corrosive media along the particle interface and wear grooves after wear, thereby improving the service stability of the coating under wear-corrosion coupled conditions.

The application discloses a composite air preheater system, belongs to the technical field of boiler tail heat exchange equipment of coal-fired power plant, and solves the problems of abrasion, corrosion and blockage of heating surface caused by adhesion and deposition of liquid ammonium bisulfate of heat exchange plate, and the technical scheme for solving the problems mainly comprises a rotary air preheater, a heat exchanger, a flue gas pipeline and an air pipeline, the heat exchanger comprises heat exchange plates and a third flue gas passage, the heat exchange plate comprises two thin plates and an air passage between the two thin plates, the flue gas pipeline comprises a first flue gas passage and a second flue gas passage, an auxiliary flue gas passage is arranged between the first flue gas passage and the second flue gas passage, the second flue gas passage is provided with a first guide plate, and the first guide plate is arranged in an inclined mode, so that the flue gas amount entering the air inlet end of the heat exchanger of the third flue gas passage is increased. The application mainly prevents liquefaction, adhesion and deposition of ammonium bisulfate, reduces the possibility of ash deposition, blockage, corrosion and abrasion of the heating surface of the heat exchange plate, and further improves the heat exchange efficiency and service life.

The utility model relates to the technical field of large longitudinal slope guide hole construction drilling tools, in particular to a large longitudinal slope guide hole construction drilling tool which comprises a base, an adjusting groove is formed in the base face of the base, a sliding rod is arranged on the lower side in the adjusting groove, a threaded rod is rotationally arranged on the upper side in the adjusting groove, and a movable seat is arranged on the base face of the base. A limiting plate is arranged on the front side of the base face of the base, a driving motor is arranged at the rear end of the base, a connecting assembly is arranged on the large longitudinal slope guide hole construction drilling tool, after a fixing bolt is detached, a first fixing sleeve and a second fixing sleeve can be detached from a connecting ring, and after the first fixing sleeve and the second fixing sleeve are detached, the first fixing sleeve and the second fixing sleeve can be detached. The drill rod can be detached from the supporting seat by moving the first connecting block forwards, so that when the drill rod is scrapped due to abrasion and corrosion, the drill rod can be detached independently for replacement, use is more convenient, and the whole device is simple in structure, convenient to operate and higher in practicability.

The application relates to the technical field of fluid machinery and equipment, in particular to a wear-resistant and corrosion-resistant water pump which comprises a fixing structure for being capable of being connected with different pipes, a supporting structure for reducing external impact, and a protection structure for improving wear resistance and corrosion resistance, wherein the protection structure is internally provided with the supporting structure, and the bottom is fixedly connected with a round shaft. The water pump can be protected by the protection layer, the connecting layer, the corrosion-resistant layer and the fixing layer, the protection structure can perform multi-level protection on the pump body through the material layers with different properties, the niobium alloy and the tantalum alloy have high strength and good wear resistance, the polyether ether ketone material has excellent corrosion resistance, the aramid composite material can provide good structural strength and stability, the technical problem that the water pump is prone to wear and corrosion in a harsh environment can be solved through the multi-layer protection structure, the service life of the water pump can be prolonged, and the reliability of the water pump can be improved.

This invention discloses a process for preparing ceramic particle-reinforced steel-based composite materials, belonging to the field of wear-resistant material preparation technology. The method of this invention includes: a powder mixing process, a powder injection molding process, a vacuum debinding process, and a vacuum hot-pressing sintering process. The process scheme is as follows: First, ceramic particles with attached rare earth elements Y and La, iron powder, and an organic binder are added to a ball mill jar and thoroughly mixed using a planetary ball mill. The granulated powder is heated and plasticized, then injected into a mold cavity using a powder injection molding machine. After curing and shaping through processes such as pressure holding, debinding is performed using a vacuum debinding furnace. Finally, the ceramic particle-reinforced steel-based composite material is obtained through vacuum hot-pressing sintering. The method of this invention can prepare metal-based composite materials on a large scale, resulting in a denser microstructure and wear-resistant materials with better resistance to wear, corrosion, and impact.

The invention provides an experimental method and device for abrasion and corrosion of a metal component in a marine atmosphere thin liquid film environment, and belongs to the field of abrasion and corrosion failure detection. According to the method, the abrasion increment caused by the corrosion effect can be finally obtained. The device comprises a thin liquid film forming module, a thin liquid film measuring module, a friction abrasion module and an electrochemical in-situ monitoring module. During an experiment, firstly, a metal component is processed into a metal component in a target form, a grinding head, a to-be-tested wear sample and the thin liquid film forming module are assembled on the friction wear module, environmental parameters are determined through the thin liquid film measuring module, finally, the electrochemical in-situ monitoring module is connected, and the friction wear module is started for cooperative operation. The experimental method and device are particularly suitable for testing the abrasion and corrosion performance of the metal component in the marine atmospheric environment, the shape, size and contact mode of the metal component can be designed according to the actual friction state, and the experimental method and device have the advantages of being high in friction scene reduction degree and high in simulation authenticity.

The invention provides heat-insulating, wear-resisting and scale-inhibiting surface layer powder for an ultra-deep well drill rod, application of the heat-insulating, wear-resisting and scale-inhibiting surface layer powder and a heat-insulating, wear-resisting, corrosion-resisting and scale-inhibiting powder coating for the ultra-deep well drill rod, and belongs The surface layer powder comprises naphthalene type epoxy resin, modified fluorosilicone resin, core-shell structure nanometer heat insulation filler and the like. According to the core-shell structure nanometer heat insulation filler, nanometer hollow glass beads with hollow structures and silicon dioxide aerogel are adopted as cores, a layer of zirconium oxide ceramic phase with high hardness and high chemical inertness is constructed on a shell of the core-shell structure nanometer heat insulation filler, a soft-core and hard-shell structure is formed, the soft core is responsible for providing extremely low heat conductivity, and the hard-shell structure is responsible for providing extremely low heat conductivity; the hard shell effectively improves the wear resistance and pressure resistance of the filling phase, and solves the contradiction between heat insulation and toughness. And in combination with novel and creative designs such as a multi-component heat-resistant wear-resistant scale-inhibiting film-forming system and a double-layer functional coating structure, the application bottleneck of the ultra-deep well drill rod in extreme environments such as high temperature, high pressure, wear, corrosion and scaling is systematically solved.

The utility model relates to the technical field of conveying devices, in particular to a modularized tooth-shaped belt line body conveying device which comprises two H-shaped supports which are arranged in a bilateral symmetry mode, the two H-shaped supports are jointly connected with two fixing side plates which are arranged in a front-back symmetry mode, and a driving roller is rotationally connected to the position, located at the right end, between the two fixing side plates. A motor used for driving the driving roller to rotate is arranged on the rear side of the rear fixing side plate, an elastic piece is arranged between the two fixing side plates and located at the left end, the elastic piece is connected with a U-shaped plate, a driven roller is rotationally connected between the front side and the rear side of the inner wall of the U-shaped plate, and the driving roller and the driven roller are jointly connected with a module cog belt. According to the modular cog belt line body conveying device, a traditional integral cog belt can be decomposed into a plurality of independent replaceable units through the modular cog belt in modular design, and when the performance of a local area is reduced due to abrasion, corrosion or fracture, only a damaged module needs to be detached and replaced.

The utility model discloses a test device for simulating a high-temperature and high-pressure dynamic wear corrosion environment, which comprises a reaction kettle and a support cabinet body, the reaction kettle is arranged in a heating furnace, the heating furnace can be vertically lifted and supported on one side of the support cabinet body, and a kettle cover corresponding to the reaction kettle is horizontally arranged on the corresponding support cabinet body above the heating furnace; a sample clamp is arranged below the kettle cover and is composed of a plurality of annular clamp units which are arranged up and down, each clamp unit comprises an upper annular plate and a lower annular plate which are horizontally arranged up and down, the lower surface of each upper annular plate and the upper surface of each lower annular plate are provided with a plurality of uniform sample grooves and connecting holes which are in one-to-one correspondence, and a flow baffle is arranged between every two adjacent clamp units; a stirrer is arranged in the center above the kettle cover, a stirring rod of the stirrer vertically penetrates through the kettle cover downwards, and a straight paddle is arranged on the corresponding stirring rod between the upper annular plate and the lower annular plate of each clamp unit. The device can be used for selection of service materials in the high-temperature and high-pressure acid environment, service life evaluation and corrosion and abrasion behavior and mechanism research.

The invention provides a surface composite coating of a medical titanium alloy implantation instrument as well as a preparation method and application of the surface composite coating, and belongs to the technical field of material surface protection and manufacturing. The composite coating comprises an oxide layer which is prepared on the surface of a titanium alloy matrix by using a micro-arc oxidation technology and a Cr / CrC1 / CrC2 / DLC multi-layer composite film which is prepared by using an arc ion plating technology. The composite coating has strong film-substrate bonding performance, good hardness, good surface quality and good wear resistance and corrosion resistance. The preparation method comprises the following steps: preparing the oxide layer by using a micro-arc oxidation technology, and then preparing the Cr / CrC1 / CrC2 / DLC multilayer composite treatment by using an arc ion plating technology. The method is simple, high in efficiency, good in repeatability, good in coating surface quality and easy to realize large-area industrial production. When the titanium alloy is used in the abraded and corrosive environment of an implanted instrument, such as an implanted instrument material, the abrasion and corrosion phenomena of the surface of the titanium alloy can be effectively relieved, and the service life in the implantation environment is prolonged.

The utility model relates to the technical field of road base plates, and discloses a heavy lap joint type road base plate which comprises a bottom layer plate and a road base plate body which are in bilateral symmetry, strengthening assemblies are arranged in the bottom layer plate and the road base plate body, each strengthening assembly comprises an anti-skid protruding block, and the anti-skid protruding blocks are fixedly connected to the surface of the road base plate body. An anti-corrosion layer is arranged on the surface of the road base plate body, a wear-resistant layer is arranged on the surface of the anti-corrosion layer, a plurality of reinforcing ribs are fixedly connected into the bottom layer plates, and splicing assemblies are arranged on one sides of the bottom layer plates which are in bilateral symmetry. According to the utility model, the wear-resistant and corrosion-resistant performance of the road base plate body can be further improved through the corrosion-resistant layer and the wear-resistant layer, so that the effect of enhancing the overall strength of the bottom plate and the road base plate body is achieved, the problem that the traditional road base plate is easy to damage due to strength reduction caused by wear and corrosion is solved, and the equipment passing and material transportation efficiency in engineering construction is improved; and the risk of construction period delay caused by frequent replacement of the road base plate is reduced.

The utility model discloses a charging PIN fixing structure and AR glasses, the charging PIN fixing structure comprises a housing, the first surface of the housing is provided with an opening communicated with an accommodation space; the mounting rack is fixed in the opening, the mounting rack is sunken towards the direction of the accommodating space relative to the first surface, a plurality of mounting holes are formed in the mounting rack, and the mounting holes are communicated to the accommodating space; and the plurality of PINs are fixed in the plurality of mounting holes in a one-to-one correspondence manner. Compared with the prior art, by hiding the mounting rack in the housing, on one hand, the appearance surface of the mounting rack exposed out of the product can be reduced, and the appearance of the product is improved, and on the other hand, a shielding effect can be achieved, the problems of abrasion, corrosion and the like caused by the exposure of the contacts on the PINs to the outside can be avoided, and the charging reliability of the product is improved.

The invention relates to a surface structure of an electrostatic chuck used in a semiconductor manufacturing process. The surface structure includes a substrate, a first protective coating disposed on the substrate, and a second protective coating disposed on the first protective coating. The first protective coating is deposited on the substrate and is made of a material selected from the group consisting of metal oxides, fluorides and nitrides. As a universal protective screen, the protective screen is resistant to abrasion, corrosion and heat effect. The second protective coating is deposited on the first protective coating having a hardness higher than that of the first protective coating, providing enhanced wear resistance. In addition, the invention also provides a multifunctional and effective solution, which is used for improving the performance and prolonging the service life of the electrostatic chuck in semiconductor manufacturing.

The invention discloses a corrosion-resistant and wear-resistant IN625-based composite high-entropy alloy and a preparation method thereof, and belongs to the technical field of wear-resistant and wear-resistant high-entropy alloys, CoCrFeNiMo high-entropy alloy components are introduced into an Inconel 625 matrix by adopting a wire arc additive manufacturing process, and the corrosion-resistant and wear-resistant IN625-based composite high-entropy alloy is prepared. According to the method, by controlling the adding amount of the CoCrFeNiMo high-entropy alloy components, the electrochemical uniformity of the alloy surface is optimized, and formation of a more stable compact passive film is promoted. And by reducing component fluctuation between a matrix and a precipitated phase, inter-phase micro galvanic corrosion driving force can be remarkably inhibited, so that the material shows more excellent thermodynamic stability and chemical protection performance in a chlorine-containing corrosive medium.