73 results about "Thermal spray coating" patented technology

This invention provides a carbon fiber reinforced polymer (CFRP) composite material that enhances the anchoring effect of the metal layer to the CFRP substrate and improves adhesion. [Solution] The CFRP composite material comprises a base material made of CFRP, a first metal layer laminated on the surface of the base material, and a second metal layer laminated on the surface of the first metal layer. The surface of the base material has carbon fiber cutting grooves formed to a depth in which the carbon fibers in the base material are actually cut, and the first metal penetrates into the grooves and is fixed therein. The manufacturing method includes (1) forming the cutting grooves, (2) laminating the first metal layer by thermal spraying (with penetration into the grooves), and (3) laminating the second metal layer by plating.

The application discloses a kind of plasma spraying self-reduction TiC / Ti composite coating and its preparation method and application, belong to thermal spraying coating field, TiC powder, deionized water and binder are mixed and stirred and ball milled, and TiC spherical powder is prepared by spray granulation;Using plasma spraying process, TiC spherical powder is sprayed on substrate, so that TiC occurs self-reduction reaction to generate Ti metal phase, and forms plasma spraying self-reduction TiC / Ti composite coating on substrate;In plasma spraying self-reduction TiC / Ti composite coating, Ti metal phase is distributed between TiC ceramic phase, and forms layered inlay structure.The application uses TiC powder as raw material, and generates Ti metal bonding phase in situ by adjusting and controlling plasma spraying process parameters during spraying process, avoids additional metal bonding phase and subsequent annealing treatment, simplifies process flow and reduces cost.The bonding strength of the prepared plasma spraying self-reduction TiC / Ti composite coating can reach 52.40 MPa at most, which significantly improves the problem of large brittleness and poor interface bonding of traditional TiC coating.

This invention discloses a composite thermal spray powder for wear-resistant coatings and its preparation method, relating to the field of thermal spray materials technology. The composite thermal spray powder for wear-resistant coatings comprises, by weight, the following components: 18-26 parts of a metal matrix material, 54-66 parts of a hard reinforcing phase, 8.5-12.5 parts of nano-Ti powder, 2.6-3.3 parts of a reactive carbon source, 0.8-1.5 parts of a buffer carbon source, 0.8-1.2 parts of a transient liquid phase additive, 1.5-2.5 parts of a lubricating functional component, and 0.5-1.5 parts of a modified coating material. The composite thermal spray powder for wear-resistant coatings provided by this invention has the following beneficial effects: precise and stable introduction of the reinforcing phase, and stable self-lubricating properties.

This utility model belongs to the field of shielded pumps and relates to a coreless magnetic steel rotor for the axial magnetic field of a permanent magnet shielded pump. It includes: a rotating shaft, with a front ceramic layer and a rear ceramic layer formed by thermal spraying ceramic layers onto the front and rear middle sections of the shaft; an impeller mounted on one end of the rotating shaft; a ceramic ball bearing and a bearing pressure ring mounted on the other end of the rotating shaft; and a coreless magnetic steel rotor mounted on the rotating shaft. The advantages of this structure are: using a stainless steel shaft with thermally sprayed ceramic layers on the bearing positions effectively prevents and eliminates the drawbacks of traditional water bearings, such as short lifespan and easy wear, and ceramic shaft breakage due to overload impact from the medium.

The present disclosure provides a thermal barrier coating powder and a preparation method thereof, and a thermal barrier coating, and relates to the technical field of high-temperature protective coating materials. The method comprises: performing mechanical-chemical grinding and surface hydroxylation treatment on a MAX phase powder; dispersing an activated MAX phase core in a liquid phase, uniformly coating a YSZ precursor on the surface of the core through double titration co-precipitation to obtain a core-shell structure precursor slurry; performing microwave hydrothermal treatment to in-situ crystallize the YSZ precursor to form a YSZ shell layer on the surface of the MAX phase core, thereby obtaining a core-shell structure unit; the core-shell structure unit has a core-shell structure composed of a MAX phase core and a YSZ shell; performing post-treatment and spray drying on the core-shell structure unit to obtain a thermal barrier coating powder; and the powder is obtained by agglomeration of multiple core-shell structure units. The interface between the core and the shell of the powder obtained by the method is firmly combined, can provide oxidation protection for the inner core of the MAX phase in coating preparation processes such as thermal spraying, and significantly improves the fracture toughness and thermal shock resistance of the thermal barrier coating.

This invention relates to a method for controlling the deformation of thin-walled, weakly rigid parts manufactured by additive manufacturing during thermal spraying. Belonging to the field of thermal spraying technology, it solves the technical problem of deformation occurring during the thermal spraying coating preparation process of thin-walled, weakly rigid parts with large residual stress, affecting assembly. The method for controlling the deformation of thin-walled, weakly rigid parts manufactured by additive manufacturing during thermal spraying includes the following steps: S1, detecting and processing the residual stress of the part; S2, designing and processing a thermal spraying shaping fixture; S3, assembling the fixture and part and then sandblasting; S4, performing stress-relief annealing on the part; S5, performing vibration aging stress relief on the part; S6, conducting a second residual stress detection and data processing on the part, and then calculating the residual stress change rate; S7, assembling the fixture and part and then performing plasma spraying; and S8, post-treatment after plasma spraying. This invention improves the surface accuracy of the part after plasma spraying and avoids assembly step differences.

This invention relates to a graphene / WC-10Co-4Cr core-shell spherical powder, a thermal spray coating, and a method for preparing the same, belonging to the technical field of thermal spray wear-resistant coatings. The graphene / WC-10Co-4Cr core-shell spherical powder comprises WC-10Co-4Cr spherical powder and graphene powder coating the surface of the WC-10Co-4Cr spherical powder; the graphene content in the core-shell spherical powder is 1.5~2.5 wt%. The core-shell spherical powder of this invention uses WC-10Co-4Cr spherical powder as the core and graphene powder as the shell. The coating obtained using this core-shell spherical powder exhibits excellent wear resistance and low visible light reflectivity, effectively overcoming the problem of severe surface reflection in existing WC-10Co-4Cr coatings.

This utility model discloses a pulverizer for the production of thermal spraying materials, relating to the field of pulverizing technology for spraying materials. It addresses the problem of unsatisfactory pulverizing effects and the tendency for large particles to remain after pulverization. The pulverizer includes a pulverizing cylinder with a rotary motor fixedly connected to its bottom. A rotating shaft is fixedly connected to the output end of the rotary motor. A pulverizing mechanism is located at the top of the outer surface of the rotating shaft, and a grinding mechanism is located at the bottom of the outer surface of the rotating shaft. This utility model, by incorporating a rotary motor, rotating shaft, pulverizing roller, first pulverizing teeth, arc-shaped plate, and second pulverizing teeth, can pulverize the thermal spraying material raw materials fed into the pulverizing cylinder. By incorporating a rotary motor, rotating shaft, grinding disc, and grinding plate, it can grind the pulverized raw materials, reducing large particles into finer particles for easier subsequent use. This method provides good pulverizing effect on thermal spraying material raw materials, produces uniform pulverized particles, and has high production efficiency.

The application belongs to the technical field of thermal spraying workpiece clamping, in particular to a thermal spraying workpiece clamping platform, which comprises a workbench, a fixed sleeve fixedly installed on the workbench, a conversion disc assembly arranged in the fixed sleeve, the conversion disc assembly comprising: a disc body rotatably installed in the fixed sleeve, a plurality of groups of rectangular grooves equally angularly arranged on the outer circle of the disc body, a workpiece placing rack movably installed in the rectangular groove, a receiving plate fixedly connected to the bottom of the workpiece placing rack, two groups of side plates symmetrically fixedly connected to the receiving plate, a movable frame movably installed between the two groups of side plates, a first spring arranged on one side of the movable frame, and a convex shaft matched with a first inclined sliding groove to enable the workpiece placing rack to move away from the material port, so that the qualified test piece can be timely taken off from the conversion disc assembly, thereby shortening the interval time of the staff for the experiment on the qualified test piece and indirectly improving the efficiency of the experiment on the test piece.

A composite component includes: a conductive member having a first plane, a second plane, and an inner-corner curved surface which is a boundary surface between the first plane and the second plane; and an insulating thermal-sprayed film that covers the first plane, the second plane, and the inner-corner curved surface. The insulating thermal-sprayed film has a planar covering portion that covers the first plane and / or the second plane and an inner-corner curved surface covering portion that covers the inner-corner curved surface. Porosity of the inner-corner curved surface covering portion and porosity of the planar covering portion are 8.0% or less, and an average distance between nearest pores having a pore diameter of 5.0 μm or more in the inner-corner curved surface covering portion and an average distance between nearest pores having a pore diameter of 5.0 μm or more in the planar covering portion are 4.0 μm or more.

This utility model relates to a thermal spraying device for the surface of a valve ball, including a worktable, a processing seat fixed on the upper side of the worktable, an inner cavity opened in the processing seat, a placement groove extending vertically through the upper side wall of the inner cavity, and symmetrically installed correction arms in the placement groove; an external support mechanism capable of vertical movement is installed in the inner cavity. When the technician fixes the valve ball, the two correction arms are inserted into the interior of the valve ball and brought into contact with the inner side wall of the valve ball, thereby correcting the opening orientation of the valve ball so that the opening of the valve ball can face vertically upwards, without the need for manual adjustment by the technician, and ensuring that the outer surface of the valve ball can receive comprehensive and uniform thermal spraying treatment during the thermal spraying process.

An acoustic stack for an ultrasonic transducer and a method of manufacturing the same are provided. In one example, an acoustic stack (100) includes a piezoelectric layer (110), a matching layer (120) disposed directly on a first side of the piezoelectric layer (110), and a de-matching layer (130) disposed directly on a second side of the piezoelectric layer (110), the first side opposite the second side. One or more layers can be deposited via thermal spray deposition.

This invention discloses a short-process rapid solidification / powder metallurgy technology and its applications. The short-process rapid solidification / powder metallurgy technology of this invention includes the following steps: Step 1: Using metal wire or powder as raw material, a bulk blank with a thickness of 1-10 mm is deposited on a substrate using thermal spraying technology; the metal is selected from magnesium, titanium, copper, iron, nickel, zinc, aluminum, or their alloys; Step 2: The bulk blank is thermomechanically processed to obtain a sheet product; the thermal spraying technology includes flame spraying, supersonic spraying, arc spraying, plasma spraying, or cold spraying; the thermomechanical processing includes hot rolling, hot extrusion, or hot forging. This invention significantly shortens the preparation process, consumes less energy, has low overall production costs, and has wide applicability, and can be applied to the preparation of metal matrix composites, ultrafine-grained metal materials, heterostructure metal materials, layered structure metal composites, etc.

This utility model relates to the field of thermal spraying technology and discloses an adjustable welding spraying device, including a base shell, a first motor, a rotary table, a top plate, a first cylinder, a lifting plate, a first electric slide rail, a second electric slide rail, a spray gun body, a clamping and flipping mechanism, and an angle adjustment mechanism. The first motor is fixed inside the base shell, and the upper end of the output shaft of the first motor is fixed on the lower surface of the rotary table. The guide post is fixed between the base shell and the top plate. This adjustable welding spraying device clamps materials by controlling the operation of the first or second electric cylinder through a program. It is suitable for materials of different shapes, saves time and effort, and improves the clamping efficiency of materials. In addition, it can realize automatic flipping of materials, so that the materials can be sprayed from all directions, saving time and effort and improving the spraying efficiency of materials.

The application relates to the technical field of billet hot spraying auxiliary equipment, and provides a billet anti-oxidation coating mist droplet isolation device, which comprises a horizontal water curtain device, a plurality of horizontal water curtains which are horizontally laid and mutually overlapped are formed below a roller way, and the horizontal water curtains extend beyond the boundaries of the long sides of a spraying station; a vertical water curtain device is arranged on the left and right sides of the spraying station and located at the edges of the horizontal extension area, drainage slits are arranged on the two sides of a rectangular tube, and double-layer continuous vertical water curtains extending from top to bottom are formed; the vertical water curtains keep a preset horizontal distance from the billets, and all the falling water droplets fall into the horizontal water curtain extension area. Through the spatial partition design of the horizontal water curtain and the vertical water curtain and the structure that the falling water droplets of the vertical water curtain are received by the horizontal water curtain, the mist droplets are effectively isolated, and the problem that the water droplets drop and pollute the billets is completely eliminated from the structure.

The application relates to a preparation method and application of a high-density ceramic watch case, and belongs to the technical field of watch manufacturing. The method comprises the following steps: providing a metal watch case inner layer as a base body, and performing surface cleaning and sand blasting pretreatment on the base body; forming a porous ceramic coating on the surface of the base body through thermal spraying; placing the watch case in a vacuum environment for sol immersion, taking out the watch case, drying and calcining the watch case, and through repeated "vacuum immersion-drying-calcining" cycles, the sol is in-situ converted into a ceramic phase during the drying and calcining processes, and the coating pores are filled; and finally, the watch case is ground and polished. Through the combination of sol-gel technology and thermal spraying technology, the application effectively reduces the porosity of the thermal spraying ceramic layer, realizes high density, high gloss and wear resistance, the obtained watch case has the toughness of the metal inner layer and the excellent surface performance of the ceramic outer layer, and the defects that the traditional thermal spraying ceramic layer is difficult to mirror polish are overcome.

The application discloses a thermal spraying flame heat recovery and recycling device based on emissivity regulation, and aims at solving the problems of serious flame heat dissipation, low energy utilization rate and insufficient melting of high melting point powder in the existing plasma thermal spraying process. The thermal spraying flame heat recovery and recycling device is provided with a heat recovery cover at the outlet end of a plasma thermal spraying device, the heat recovery cover is a high-temperature-resistant shell, the high-temperature-resistant shell is internally provided with a hollow cavity, the hollow cavity forms a vacuum heat insulation interlayer, the inner surface of the cover of the high-temperature-resistant shell is provided with a high-emissivity coating, the high-emissivity coating is a perovskite coating, a spinel coating or a pyrochlore / defect fluorite coating, the outer surface of the cover of the high-temperature-resistant shell is provided with a low-emissivity coating, and the low-emissivity coating is a metal-doped ZnO coating. The thermal spraying flame heat recovery and recycling device can not only significantly improve the energy utilization rate of the thermal spraying flame, but also improve the coating quality and service protection performance.

The utility model discloses a kind of automatic spraying equipment of guide wheel surface, is related to guide wheel surface processing technical field, including base, rotating table, thermal spraying system and protection mechanism, rotating table is equipped on the top of base, pneumatic chuck is equipped on rotating table, first lifting column output end is equipped with mechanical arm, and the lower end of mechanical arm is equipped with thermal spraying system, protection mechanism includes first cover body, second cover body and circulating spray system, second lifting column output end is equipped with connecting rod, first cover body is equipped at connecting rod one end, second cover body is communicated with first cover body, and the side of second cover body is equipped with the opening of position adaptation with thermal spraying system, and circulating spray system is arranged in first cover body, second cover body inside;The utility model is by being equipped with the protection mechanism consisting of first cover body, second cover body and circulating spray system, can be realized to guide wheel and the high-temperature spraying material sprayed by thermal spraying system is protected, and the thermal spraying operation of guide wheel is carried out in first cover body, second cover body inside, can effectively prevent dust overflow.

This invention provides a long-life anti-corrosion and wear-resistant mirror coating for the surface of a cast iron drying cylinder for fruit bags and its preparation method, belonging to the field of surface coating technology. This invention prepares a mirror coating with high anti-corrosion and wear-resistant properties on the surface of the cast iron drying cylinder for fruit bags through thermal spraying, significantly improving the lifespan of the drying cylinder while maintaining the smoothness and gloss of the cylinder surface over a long period, thereby ensuring the surface gloss of the fruit bag paper.

This invention discloses a device for collecting dispersed single flat particles on the surface of a thermally sprayed substrate. The device includes a substrate, a substrate movement assembly, and an impact assembly. The substrate is used to collect dispersed single flat particles. The substrate movement assembly includes a first guide, a second guide, and a pushing member. The substrate is disposed between the first and second guides and is movable from a first position to a second position along the first and second guides. The pushing member is connected to the substrate and is used to push the substrate from the first position to the second position. The impact assembly generates an impact force and transmits the impact force to the pushing member, causing the pushing member to push the substrate from the first position to the second position. This invention also discloses a method for collecting dispersed single flat particles on the surface of a thermally sprayed substrate. This invention avoids the impact of setting a baffle or shutter device in front of the substrate on the sprayed flame environment and allows the amount of dispersed single flat particles collected to be determined by adjusting the starting position of the pendulum.

The utility model discloses a kind of thermal spraying with spray gun structure, including gun body, the lower part of gun body is fixedly connected with connecting block, the lower part of connecting block is fixedly connected with waste pipe, the inside of gun body, connecting block and waste pipe is connected, one side of connecting block is fixedly connected with threaded rod, the outside of threaded rod is rotatably connected with rotating piece, the both sides of rotating piece are fixedly connected with the connecting ring of cooperation gun body and waste pipe, one side of connecting ring is fixedly connected with embedding ring, the other end of embedding ring is fixedly connected with mounting ring, one side of mounting ring is fixedly connected with four groups of sliding rod, the outside of sliding rod is slidably connected with ear, the inside of ear is fixedly connected with mounting cylinder, one end of mounting cylinder is fixedly connected with filter screen, the filter equipment of gun body can be automatically cleaned, and filter equipment can be conveniently switched, prevent filter screen from blocking and affect normal spraying.

The utility model discloses a target material thermal spraying powder feeding and storing device, including the outer tube and the coaxial setting inside the inner tube of outer tube and open upper end, the top of outer tube is provided with the top cap, the bottom of outer tube is provided with the discharge gate, the inner wall of outer tube and the outer wall of inner tube form the powder conveying channel between, and the top of powder conveying channel is connected with the upper end of inner tube, and the outer portion of outer tube is wrapped with the heating cover, be provided with the material transfer device for the powder material in the inner tube to the powder conveying channel in the inner tube of inner tube, and the target material thermal spraying powder feeding and storing device is reduced the heating range of heating cover through setting powder conveying channel between the inner wall of outer tube and the outer wall of inner tube, and the powder is heated in the process of conveying powder, effectively avoid local powder material to be continuously heated, guarantee the uniformity of powder material heated in the mixing process simultaneously.

A surgical tool includes a drive housing having a drive input mounted thereon and a shaft extending distally from the drive housing that terminates at an end effector. A knife assembly of the surgical tool includes a blade member defining a cutting edge at a distal end thereof and disposed within the end effector. The blade member is constructed of a first material such a stainless-steel. The knife assembly also includes a drive rod extending through the shaft and having a proximal end operably coupled to the drive input to translate the drive rod longitudinally through the shaft and the blade member through the end effector in response to actuation of the drive input. The drive rod further includes a distal portion constructed of a second material dissimilar to the first material, and the distal portion of the drive rod is coupled directly to the blade member.

This invention provides a high-wear-resistant chromium oxide-nanodiamond composite coating and its laser remelting preparation method, relating to the field of thermal spray coatings. The method includes: Step 1, preparing a porous framework: using thermal spraying technology, a chromium oxide-based coating is deposited on the substrate surface, achieving a porosity of 8%-20%, with interconnected pores predominating; Step 2, nanodiamond infiltration: the coating obtained in Step 1 is immersed in a nanodiamond suspension, and vacuum-assisted or pressure-assisted infiltration is applied to fill the pores of the coating with nanodiamonds; Step 3, laser remelting and densification: a laser beam is used to scan and remelt the infiltrated coating, causing localized melting and densification of the coating surface, thereby constructing a porous chromium oxide underlayer and a dense composite surface layer. This method overcomes the technical bias of diamond ablation caused by high laser temperature, achieves the retention and interfacial bonding of nanodiamonds, and solves the problem of easy cracking in traditional dense coatings.

The utility model relates to screw spraying processing technical field discloses a kind of spraying devices for full-coated alloy screw processing, including spraying box and thermal spraying head, the abutting piece that can be cooperated with different size screw is rotatably equipped in spraying box one side, the rotating drum is rotatably equipped in other side, the clamping piece that can be clamped and limit screw is equipped in rotating drum, the movement driving part that can drive thermal spraying head to slide along screw axial direction is equipped in spraying box top, motor is equipped in spraying box side close to rotating drum, the driving wheel is equipped in the power output end of motor, driving wheel drives rotating drum and movement driving part synchronous rotation, spraying box bottom is equipped with recycling bin.The utility model compared with prior art's advantage lies in: it is convenient to limit different diameter size screw, improve practicality, it is convenient to recycle alloy material, avoid its four scatters to bring pollution or security risk.

This invention belongs to the field of material surface modification and thermal spraying technology, and provides a method for preparing a semi-ceramic coating to enhance the bonding strength of a resin surface. The method includes: preparing a composite powder using Al2O3, phenolic resin, and hexamethylenetetramine; for a cured glass fiber reinforced epoxy resin matrix, while preserving the integrity of the internal glass fiber structure, performing laser texturing pretreatment on the matrix surface to form regularly arranged micron-level concave-convex patterns; and using a supersonic plasma spraying process, spraying the composite powder onto the treated matrix surface via external powder delivery to form a semi-ceramic coating. This invention, through synergistic control of the laser texturing morphology and spraying heat input, can achieve dual enhancement of mechanical interlocking and interfacial compatibility. The resulting coating has a bonding strength with the resin matrix of no less than 20 MPa, and the interface is free of ablation or cracks. This method is particularly suitable for aerospace, electronic packaging, and other fields.

This invention discloses a turbine blade spraying clamping fixture, relating to the field of turbine blade thermal barrier coating preparation technology. It includes a lower connecting rod, a lower frame, and an upper frame coaxially assembled sequentially, as well as an adjustable support assembly, a radial positioning assembly, and a counterweight balancing assembly. Currently, the tooling and processes used in turbine blade thermal spraying preparation have significant technical deficiencies, failing to meet the mass production requirements of high-end equipment. This invention achieves high-precision clamping of turbine blades and full-process controllable coating quality through modular tooling design and a zoned closed-loop spraying process.

An atomized powder has a heat-resistant alloy phase and a Cr7C3 phase dispersed in the heat-resistant alloy phase, and contains 20 to 46% of Ni, 22 to 43% of Cr, 4 to 13% of Al, 0.1 to 1.0% of Y, and 0.3 to 4.2% of C on a mass basis, and a remainder thereof includes Co and unavoidable impurities.