111 results about "Plasma beam" patented technology

This application relates to a laser-plasma composite cladding head and a composite cladding method, and belongs to the field of surface processing of metallic materials. In the laser-plasma composite cladding head of this application, a ring laser beam is split into two half-ring laser beams through an upper roof lens to avoid a tungsten electrode. The two half-ring laser beams pass through a left 45° reflective lens to be coaxial with the tungsten electrode and then are integrated into a complete ring laser beam through a lower roof lens, thereby allowing a coaxial output of the ring laser beam and a plasma beam. This application integrates the advantages of laser cladding and plasma cladding and adopts coaxial compounding and synchronous powder-feeding.

The invention relates to the technical field of fusion reactors, and discloses a high thermal load test target plate device based on a pseudo three-dimensional topological optimization method, which comprises a panel and a heat sink assembly, through the irradiation channel, the plasma beam can irradiate the sample to be detected through the irradiation channel; a cooling medium sequentially flows through the water inlet, the water inlet channel, the water inlet flow channel, the topological optimization micro-channel, the water outlet flow channel, the water outlet channel and the water outlet to realize flowing of the cooling medium and cooling of a to-be-tested sample arranged between the panel and the micro-channel heat sink plate; the topological optimization micro-channel designed by the pseudo three-dimensional topological optimization method has more specific surface and heat exchange area, the shape of the channel is round, the flow resistance can be reduced, and the hydraulic performance can be improved; the pressure drop loss of the cooling medium is small, so that the heat dissipation efficiency and the heat dissipation effect are improved; and through the arrangement of the flow choking block and the arcs on the two sides of the flow choking block, the cooling medium is effectively guided to stably flow into the topological optimization micro-channel, and rapid and effective cooling of the to-be-tested sample is comprehensively realized.

The invention belongs to the field of plasma diagnosis and measurement, and discloses a high-heat-load plasma beam heat flux density calibration method for a linear plasma device. According to the non-contact measurement method based on the radiation temperature measurement principle, an infrared camera after temperature calibration is installed in the direction perpendicular to the propagation direction of a plasma beam; pushing the calibration graphite into a plasma beam area, and enabling the incident surface of the calibration graphite to incline by 30 degrees relative to the symmetry axis of the vacuum chamber; capturing and recording the temperature data of the incident plane of the calibration graphite in real time in the plasma discharge process by using the low / high temperature measurement range of the infrared camera; fusing the collected low / high temperature data to form complete temperature change information; and introducing the plasma beam into a three-dimensional heat conduction equation, combining thermodynamic parameters of graphite, carrying out inversion calculation to obtain the heat flux density of the plasma beam, and carrying out inclination angle correction on the heat flux density to obtain the heat flux density during vertical incidence.

The invention relates to the technical field of cutting equipment, and provides heat exchanger tube nest numerical control cutting equipment and a high-precision cutting method.The heat exchanger tube nest numerical control cutting equipment comprises a base, a first supporting plate, a second supporting plate and a third supporting plate are arranged on the base in the length direction of the base, and the first supporting plate is slidably connected to the base; the second supporting plate and the third supporting plate are both fixed to the base. According to the vertical cutting device, a second rotating disc is accurately controlled to rotate through a third driving mechanism, the second rotating disc rotates to drive a stop lever to move in a limiting groove, a support is pushed to rotate with a third hinged shaft as the center, and the spraying direction of a plasma spraying gun is tangent to the tube wall of the tube nest; when plasma is cut, a reflecting surface is formed on the inner wall of the other side, so that plasma hedging is caused, the plasma beam is jetted in the tangential direction through tangent angle cutting, the hedging phenomenon is avoided, the cutting gap is controlled, and the cutting precision is improved compared with a traditional mode.

The invention provides a plasma beam heating-based cold crucible suspension smelting device and smelting method. The plasma beam heating-based cold crucible suspension smelting device comprises a plasma beam emitter and a cold crucible main body, the cold crucible main body is of a split type water cooling structure, a cold crucible water path is arranged in the cold crucible main body, a cooling water jacket is arranged on the outer side of the bottom of the cold crucible main body, the cold crucible water path is communicated with the cooling water jacket, a detachable crucible plug is further arranged at the bottom of the cold crucible main body, and the shape of the crucible plug is matched with that of an opening in the bottom of the cold crucible main body; an induction coil is arranged around the outer side of the cold crucible main body; a first electric shaft driving device is mounted on the plasma beam emitter, and a second electric shaft driving device is mounted on the cold crucible main body. The plasma beam emitter emits plasma beams to directly heat metal materials in the cold crucible, the superheat degree of a molten pool of the cold crucible can be effectively increased, metal materials with higher melting points can be molten after the superheat degree is increased, crystal structures in the metal can be refined, the mechanical properties of the alloy can be improved, and the purity of the alloy can be improved.

The invention discloses a TC4 titanium alloy and carbon fiber reinforced composite material laser welding method, and relates to the field of dissimilar material laser welding. The preparation method comprises the following steps: firstly, carrying out surface modification on carbon fibers by using hydrogen peroxide, deepening the surface oxidation depth by microwave radiation, stripping graphene oxide on the outermost surface by ultrasonic treatment, and then carrying out plasma beam treatment impact to increase and enlarge grooves and pores on the surfaces of the carbon fibers, so that active groups and concave-convex structures on the surfaces of the modified carbon fibers after resin is filled and cured; and secondly, a layer of nano nickel is chemically deposited on the surface of the titanium alloy microstructure, permeation and corrosion of the modified carbon nanotubes to the titanium alloy are reduced, then the carbon nanotubes subjected to acid treatment are deposited on the surface layer of the nano nickel through the electrophoretic deposition technology, the interface wetting and spreading capacity is improved, and the residual stress after welding is reduced. The TC4 titanium alloy, the nano nickel deposition layer, the modified carbon nanotube deposition layer and the modified carbon fiber composite material layer are combined and connected through laser welding, so that the high-strength connection effect is achieved.

The invention discloses a cascade sheet of an annular pseudo three-dimensional topological optimization micro-channel, which relates to the technical field of fusion reactors and comprises a cover plate, a heat-resistant ring, a heat sink assembly and a water inlet and outlet assembly. When the cascade piece works, a high-density plasma beam passes through a plasma discharge channel in the middle of the heat-resistant ring, and the heat-resistant ring can restrain the plasma beam and maintain the stability of an electric arc; meanwhile, after entering the heat sink assembly through the water inlet pipe, a cooling medium is shunted to the manifold shunting ring through the water isolation ring, then enters the water inlet area and a water inlet channel in the water inlet area, then enters the topological optimization micro-channel through the micro-channel water inlet flow channel for enhanced heat exchange, then is converged into the water outlet channel through the micro-channel water outlet flow channel, and flows out of the water outlet pipe; a large amount of thermal load deposited on the inner wall of the plasma discharge channel is taken away. The heat dissipation effect of the cascading sheet is remarkably improved, and the rapid and efficient cooling requirement of the cascading sheet in a high heat load scene can be met.

The invention provides a smelting process and smelting equipment of a high-grade nickel-based high-temperature alloy, and relates to the technical field of alloy manufacturing, the smelting process comprises the following steps: S1, preparing raw materials; s2, vacuum induction smelting; s3, plasma beam refining is conducted, specifically, plasma beam refining equipment is used for conducting plasma beam reciprocating scanning on the molten alloy liquid in the S2, and impurities in the high-temperature alloy are removed again; s4, rare elements are added, and after plasma beam refining in S3 is finished, the prepared rare elements are added into the high-temperature alloy in the molten state; wherein when the rare elements are added, the high-temperature alloy in the molten state is synchronously controlled to be directionally stirred, and the powder-state rare elements are added into the furnace in batches in a reciprocating swing mode to be in contact with and mixed with the high-temperature alloy in the molten state. According to the method, the overall smelting time is shortened, the loss of rare elements is reduced, and the quality of the final finished product high-grade nickel-based high-temperature alloy is improved.

The utility model relates to a room temperature vacuum pressure bonding device which comprises a vacuum cavity, the wall surface of the vacuum cavity is respectively provided with a first through hole and a second through hole, the first through hole is connected with a plasma generating assembly, the second through hole is connected with a vacuum generating assembly, and the vacuum generating assembly vacuumizes the interior of the vacuum cavity. Activating the wafer in the vacuum cavity through a plasma generation assembly; an air cylinder is fixed to the outer top wall face of the vacuum cavity, an output guide rod of the air cylinder extends into the vacuum cavity and is connected with the bonding pressing head, an operation table is fixed to the inner bottom wall face of the vacuum cavity, and an operation arm mechanism is installed in the vacuum cavity in a matched mode. By arranging the plasma generating assembly, the plasma beam can be emitted into the vacuum cavity, so that plasma bombardment activation is carried out on the wafer, the wafer can be bonded at the room temperature without heating the wafer, energy consumption is reduced, production time is greatly shortened, and production efficiency is effectively improved.

The invention discloses a high-purity tungsten refining method based on a plasma beam furnace, which is characterized by comprising the following steps of: 1, pre-removing pollutants on the surface of metal tungsten waste, pressing to obtain a tungsten raw material, filling the tungsten raw material into a crucible, and vacuumizing; secondly, the tungsten raw material treated in the first step is added into a plasma beam smelting furnace under the inert atmosphere environment, the temperature is gradually increased till alloy is melted, then heat preservation is conducted, high-temperature refining is conducted through plasma beams, and the tungsten raw material is in a local melting or evaporation state; 3, after volatilizing according to the boiling points of the impurities from low to high, collecting by adopting an impurity cooling and collecting device; and fourthly, the refined and purified tungsten material is cooled, machined or subjected to heat treatment, and a high-purity tungsten product is obtained. The method provided by the invention overcomes the limitation of the traditional method in the aspect of removing gaseous or high-volatility impurities, and can effectively reduce the content of oxygen, silicon and iron impurities in tungsten and improve the product quality.

The embodiment of the invention provides a pole piece processing device and method, a pole piece, a battery monomer, a secondary battery and an electric device, in the pole piece processing device, the pole piece comprises a current collector and a film layer arranged on the surface of at least one side of the current collector, and the device comprises a plasma heating module used for applying a plasma beam to the film layer, the power P of the plasma heating module is greater than or equal to 1kW and less than or equal to 25kW; and the conveying module is used for conveying the rolled pole piece to the plasma heating module along the feeding direction. The treatment device can improve the wettability of the pole piece and reduce the expansion rate of the pole piece.

The invention relates to the technical field of plasma injection, and discloses a plasma beam injection system in a chromium plating machine, which comprises an electroplating bin, a bin door matched with the electroplating bin is arranged on one side of the surface of the electroplating bin, and a workpiece clamping mechanism is arranged in the electroplating bin and is used for clamping and fixing a workpiece and driving the workpiece to rotate while revolving. Plasma beam emitting mechanisms are arranged on the two sides of the inner wall of the electroplating bin and used for emitting plasma beams. According to the plasma spraying device, the plasma beam can cover the surface of the workpiece without dead angles, the problems of spraying leakage and stacked spraying caused by single movement are effectively avoided, a bidirectional spraying pattern can be formed, the coating uniformity and the coating bonding strength are improved, and therefore the spraying requirement of the workpiece can be better met.

A soil sampling drill machining device comprises a main protection gas nozzle and a lower protection gas nozzle, the bottom of the main protection gas nozzle is connected with the lower protection gas nozzle, a plasma beam generation mechanism is arranged in the main protection gas nozzle and comprises a main plasma beam generation device and an auxiliary cooling device, the main plasma beam generation device is located in the main protection gas nozzle, and the auxiliary cooling device is located in the main protection gas nozzle. The main plasma beam generating device sprays high-speed ion beams to the welding connector to complete welding operation, an auxiliary cooling device is arranged on the side face of the main plasma beam generating device and cools the main plasma beam generating device, and an auxiliary air spraying mechanism is arranged on the side face of the main protection air nozzle and cools the main plasma beam generating device. And the auxiliary air injection mechanism conducts auxiliary cleaning and cooling operation on the welding seam, and a tungsten electrode adjusting mechanism is arranged at the top of the main protection air nozzle and adjusts the plasma arc generation position.

A system for heat conditioning an area of Earth includes an Earth-orbiting satellite. The satellite includes a power supply, a precursor gas supply, and one or more double helicon plasma beam generators coupled to the power supply and the gas supply and configured to generate a plasma and further configured with a magnetic nozzle to maintain a shape of the beam; therefore, the top surface area of the beam is maximized. The generated plasma provides enhanced electromagnetic waves absorption, reflection, and deflection of incoming solar light and electromagnetic radiation, thereby reducing the heat striking the area of the Earth.

The invention discloses a method for improving intergranular corrosion resistance of a near surface of a GH4169 alloy. The method comprises: designing a moving path and a moving rate of a manipulator on a sample surface; clamping a plasma generator by using a manipulator, and carrying out near-surface rapid solid solution-aging integration treatment on the surface of the sample; and cooling the surface of the sample, and the like. The method has the advantages that the technological process is simple, the efficiency is high, the whole treatment process only needs three steps, extra pretreatment and post-treatment are not needed, consumption of other functional materials or material reduction processing is not needed, and the cost is low. The near-surface intergranular corrosion resistance of the GH4169 alloy can be obviously improved through a near-surface rapid solid solution-aging integrated treatment technology of a high-energy plasma beam. And near-surface rapid solid solution and aging treatment with the depth of about 40 microns from the surface of the alloy can be carried out, near-surface intergranular corrosion resistance of the GH4169 alloy is achieved, the requirement for improving the environmental corrosion resistance of the alloy is met, the internal microstructure of the alloy is not changed, and it is guaranteed that the internal comprehensive mechanical property of the alloy is not reduced.

The present application belongs to the technical field of curved surface electronic Wiener manufacturing, and discloses an insulating surface electroblotting device and method based on real-time plasma processing, which comprises an electroblotting assembly and a plasma assembly, wherein the electroblotting assembly and the plasma assembly work synchronously; the electroblotting assembly is used for conveying ink to a nozzle to form a jetting jet; the plasma assembly is used for processing an insulating surface by adopting a ring-shaped plasma beam to inject a polarized group into the insulating surface, and the polarized group generates a negative polarity charge under the action of an electroblotting electric field, and at the same time, residual charges of ink liquid and polarized charges of the insulating surface are neutralized to realize stable jetting and deposition of ink jets / drops on the insulating surface. The present application solves the printing and forming problem of a complex microstructure of an insulating substrate.

The invention provides a solid tungsten electrode negative pressure arc plasma beam cleaning machining method. The method comprises the steps of adjusting technological parameters, forming negative pressure arc plasma beam rotary adsorption cleaning, negative pressure arc fixed-point cleaning and online monitoring and adjusting. Through the steps, different cleaning parameters are selected according to different cleaning materials, and dynamic anti-gravity, upward negative pressure and an influence area thereof are formed in an electric arc action area by utilizing a magnetic field through the synergistic effect of negative pressure electric arc plasma beam rotary adsorption cleaning and electric arc cleaning technology for regulating and controlling magnetic field threshold constraint; and the oxidation film or pollutants are directionally stripped and upwards migrated to a collecting device, so that the removal is achieved, and meanwhile, high-energy fixed-point cleaning of arc cathode spots is combined, so that high-efficiency, high-precision and wider-cleaning-range surface cleaning treatment is realized.

The embodiment of the invention provides a pole piece processing device and a control system and method thereof. The processing device comprises a plasma heater, and the plasma heater is used for applying plasma beams to the surface of a pole piece; the control system comprises a measuring module used for measuring environment information of the processing device; and the control module is used for adjusting working parameters of the processing device according to the environment information. The control system provided by the invention can enable the processing device to perform plasma processing on the pole piece more flexibly and accurately, helps to improve the quality of the pole piece, and is beneficial to improve the electrochemical performance of the battery.

This application discloses a method for offline analysis of powder ionization conditions, comprising the following steps: placing a silicon wafer on a target plate of a plasma device; generating a plasma beam under preset powder ionization conditions using the plasma device; injecting powder into the plasma device so that the plasma beam bombards the powder until powder injection is complete; detecting whether a first condition and a second condition are met, wherein the first condition includes at least 70% of the powder injected into the plasma device ablation and brightening upon bombardment by the plasma beam and / or forming a coating on the silicon wafer; the second condition includes the coating containing chemical bonds formed by elements of the powder and / or detecting spectral lines generated by ionization of the powder upon bombardment by the plasma beam. If the first and second conditions are met, the powder is determined to be effectively ionized. Otherwise, the powder is determined to be ineffectively ionized. The method of this application can obtain basic research data on the boronization of boron powder.

This invention discloses a mass spectrometry ionization method based on the Tesla coil principle. It utilizes a Tesla coil to generate a micro-plasma beam, which serves as the ion source. Liquid samples are desorbed and introduced into the micro-plasma beam region for ionization, or gas samples are directly introduced into the micro-plasma beam region for ionization. This invention, by creatively using a Tesla coil-generated micro-plasma beam as the ion source, not only achieves strong ionization capability and good ionization effect on volatile gas samples and low-polarity or non-polar liquid samples, but also requires sample volumes as low as picoliters to microliters, exhibits good solvent compatibility and strong salt resistance, and further possesses advantages such as simple operation, low cost, ease of implementation, and broad applicability.

The utility model discloses a kind of plasma cleaning plate, including bottom plate, bottom plate is provided with cathode, the surface of bottom plate is opened with at least one cathode groove, cathode groove is U shape, by the cathode groove design is U-shaped curved surface, the contact area of cathode and anode is significantly increased 30%-50%, current density distribution is optimized, make ionization area more concentrated and uniform, greatly improve the energy density of plasma arc and atmosphere dissociation degree, and, plasma can be maintained in lower temperature state in generation and effect process, unnecessary heat loss is reduced, to realize the effect of energy saving, at least one row of array distribution's plasma cleaning hole is equipped in cathode groove, and staggered distribution design is adopted, so that plasma beam is ejected at different angles and positions, form interlaced covering jet field, not only significantly improve cleaning efficiency, make cleaning process more efficient, can also ensure that cleaning has no dead angle, more comprehensive.

This invention discloses a burner head and electric flame stove capable of automatically switching between long and short arcs, including a burner head top shell, a burner head bottom shell, a cathode nozzle, a ceramic tube, an anode needle, an adjustable speed air intake device, and a circuit board. The inner wall of the cathode nozzle adopts a multi-segment conical surface superposition structure, which can disperse the radial tension of the electric field, making the electric field lines more concentrated in the axial direction and effectively forming a rigid plasma beam; the bottom of the multi-segment conical surface provides a smooth transition channel for airflow and suppresses shock wave generation; the bottom of the anode needle is provided with a funnel-shaped mounting groove, and the spring guide needle elastically abuts against the mounting groove. The funnel-shaped structure has an automatic centering function, which can achieve reliable contact between the spring guide needle and the anode needle without precise calibration, ensuring the stability of the electrical connection. For high-power electric flame stoves with hundreds of electrode needles, this structure can greatly simplify the installation process, improve installation efficiency, and reduce the installation failure rate.

This invention discloses a method for preparing nano-aluminum-based lithium materials and adsorbents using laminar plasma beams, belonging to the field of lithium-ion adsorption technology. This invention provides a simple, relatively mild, and highly repeatable method for preparing nano-aluminum-based lithium materials and adsorbents using plasma beams. In this invention, aluminum hydroxide and lithium chloride are mixed in a molar ratio of 2:1 to 1.3, and then evaporated and condensed by a plasma beam in a sealed space protected by an inert gas to obtain nano-aluminum-based lithium materials. These materials are then granulated with resin to obtain the adsorbent. This invention uses the controllable laminar arc heat generated by the plasma beam as a heat source, achieving physical high-temperature vaporization and simultaneous rapid condensation to form Al(OH)₂. 3 The nanomaterials with uniformly distributed LiCl molecules maximize the specific surface area of ​​the aluminum-based lithium adsorbent, resulting in superior adsorption capacity. This invention is produced in a fully enclosed manner under normal pressure, offering advantages such as safety, zero emissions, energy saving, environmental protection, short process, and continuous, efficient, and stable preparation.

The invention relates to the technical field of plasma generator temperature control, and discloses a temperature control method and system for a plasma generator, parallel and adjacent copper wires are divided into a plurality of wire clusters according to an adjustable interval, a heat conduction distance calculation strategy is executed, a plasma beam is used for irradiating a single copper wire, and a heat conduction distance calculation strategy is executed. Calculating the heat conduction distance of the copper wire based on a set temperature threshold value; executing a routing segmentation rectangular cleaning strategy, designing a rectangular area of the plasma beam according to a routing track, dividing a rectangular irradiation area on the routing track, and controlling a moving mode of the plasma beam; executing a component bypassing irradiation strategy, selecting an entrance point and an exit point on the boundary of the rectangular irradiation area, constructing a path diagram according to the electronic components, and calculating an optimal path; and executing a cross wiring cluster irradiation strategy, planning a component gap irradiated by the two plasma beams according to the direction of the wiring cluster, controlling heat transfer, and avoiding generation of a local overheating or supercooling phenomenon of the circuit board.

The invention relates to the technical field of new energy automobile accessories, in particular to a new energy relay shell and an additive mixing manufacturing method thereof. Performing array printing on the outer surface of the functional skeleton to generate a preset directional deformation assembly, and performing integrated printing in the functional skeleton to generate a three-dimensional variable cross-section arc extinguishing flow channel; scanning and activating the surface of the functional skeleton by adopting a plasma beam, and then depositing a silane coupling agent layer; putting the functional framework into an injection mold, and injecting a thermoplastic engineering plastic melt into the mold; the pressure of the mold cavity is maintained until the temperature of the injection molding layer is reduced to be lower than the crystallization temperature, the deformed preset directional deformation assembly is fastened through the volume shrinkage rate of the injection molding layer, the thin plate is induced to be directionally bent through the heat flow deformation technology, and dynamic mechanical counterforce balance is formed through the rebound potential energy of the thin plate and the shrinkage force of the injection molding layer. And the IP67 protection requirement of the high-voltage relay of the new energy automobile is met.

The invention provides a double-plasma beautifying device with an MTS roller. The dual-plasma cosmetic device with the MTS roller comprises a main body unit which comprises a high-frequency oscillator and a cold plasma oscillator; and a handle unit including: a high-frequency generation unit connected to the high-frequency oscillator and generating a thermal plasma beam; the cold plasma generating unit is connected with the cold plasma oscillator and is used for generating a cold plasma beam; and an MTS roller unit connected to the main body unit and in contact with the skin.

The present invention discloses a method for rapid on-site screening of hazardous substances in spray cosmetics, comprising the following steps: placing a dielectric barrier discharge ionization source at the front end of a small portable mass spectrometer inlet, placing a sample spray tip directly above a plasma beam generated by the dielectric barrier discharge ionization source, pressing a sample spray valve, causing sample droplets generated vertically to collide with the plasma beam generated horizontally, and ionizing the target substance through energy and charge transfer between the dielectric barrier discharge ionization source and the small portable mass spectrometer inlet in the space and time between the source and the small portable mass spectrometer inlet. The method is simple, rapid, real-time, and efficient, making it suitable for rapid on-site screening of hazardous substances in spray cosmetics.

The invention belongs to the technical field of precision machining, and particularly relates to a composite strengthening method and device for a high-precision hole component. The method comprises the steps that firstly, clamping and pretreatment are conducted; step 2, coating an absorption layer: coating the absorption layer by adopting a spraying process; thirdly, variable-frequency induction preheating is conducted, wherein the temperature of the whole workpiece to be machined is increased to the preheating temperature range; the current frequency is adjusted to a high frequency through a frequency conversion assembly, vortex is induced to be generated on the inner wall of the hole, and local deep heating is conducted on the inner wall of the hole; 5, plasma beam cladding strengthening is conducted, specifically, a plasma beam generation system is started, plasma beams are generated and used for conducting pretreatment on an area to be strengthened, and then the plasma beams are combined with variable-frequency induction heating to achieve strengthening of the inner wall of the hole; and step 6, processing post-treatment: after plasma beam cladding reinforcement is completed, rapid cooling and detection are carried out, and a processing site is cleaned to prepare for next processing. The energy utilization rate is high, and the strengthening effect is uniform.

Method for plasma treatment of a material web (12, 210), in particular using a device (10, 10', 10'', 10''', 50) according to one of claims 7 to 14, - where the material web to be treated (12, 210) is provided, - in which the cross-section of the material web (12, 210) is changed at least in one area of ​​the material web (12, 210) such that the material web (12, 210) forms a treatment space (28) that is at least partially closed in cross-section, - in which an atmospheric plasma jet (36, 128) is generated and directed in the treatment chamber (28) onto the material web (12, 210), so that the material web (12, 210) is exposed to the atmospheric plasma jet (36, 128), and - in which the cross-section of the material web (12, 210) is changed to its original initial shape after the material web (12, 210) is exposed to the atmospheric plasma jet (36, 128).

The present invention discloses a method for depositing a tantalum carbide composite coating, comprising five steps: S1: generating a powder composition signal; S2: based on the powder composition signal, pre-depositing a tantalum carbide transition layer on the substrate surface and curing it through heat treatment to form a transition layer interface signal; S3: based on the transition layer interface signal, activating a three-layer combined atmosphere protection system comprising overall cavity atmosphere protection, flame annular gas curtain protection, and substrate back cooling protection, generating an oxygen concentration monitoring signal and a protective gas flow control signal, and simultaneously generating a coating thickness signal; S4: based on the coating thickness signal, switching the thermal spraying gun to a low-power plasma beam mode to form a densified coating signal; S5: changing the proportion of carbon powder in the composite powder, repeating steps S3 and S4 at least once, and outputting the final coating signal. The tantalum carbide composite coating deposition method of the present invention can solve the problems of low bonding strength, easy oxidation, and high porosity of existing thermally sprayed tantalum carbide coatings.