15 results about "Radio-frequency induction" patented technology

This invention discloses a preparation process for high-carbon ferrochrome based on plasma spheroidization technology, belonging to the field of powder metallurgy. The process involves crushing and ball milling high-carbon ferrochrome blocks to obtain pre-formed powder, adding tannic acid, urea, nickel acetate tetrahydrate, and citric acid for coating, followed by spray drying. After pre-reduction carbonization in an argon-hydrogen atmosphere, the powder is then spheroidized using a radio frequency inductively coupled plasma torch. In-situ nanostructure growth is achieved in a mixed atmosphere of argon, hydrogen, and acetylene. Nickel acetate is reduced to catalytically active elemental nickel nanoparticles under the action of hydrogen and carbon monoxide. The powder is then cooled, graded, and inertly encapsulated to obtain a high-sphericity, low-oxygen-content, high-carbon ferrochrome-based core-shell structured spherical powder. The process flow of this invention is continuous and controllable, effectively improving powder flowability, bulk density, hardness, and corrosion resistance, and is applicable to additive manufacturing, thermal spraying, and powder metallurgy forming.

The invention belongs to the technical field of functional food, and particularly relates to plant silicon water capable of improving atherosclerosis and a preparation method of the plant silicon water. The method comprises the following steps: S1, mixing silicon tetrachloride, high-purity oxygen and hydrogen to obtain mixed gas; s2, introducing the mixed gas into a radio frequency induction plasma torch to generate silicon-containing gas; s3, the silicon-containing gas is subjected to temperature programming, purging and deacidification under nitrogen carrier flow, and a silicon gas-phase product is obtained; and S4, performing feedback control. The radio frequency induction plasma torch is adopted for high-temperature pyrolysis, and it is ensured that silicon tetrachloride is completely decomposed to generate high-activity silicon-containing gas. The sodium citrate solution is used for dissolution and synchronous surface modification, and the strong coordination capability of citrate radicals is used for stabilizing silicon hydroxyl, so that the product is endowed with stable electronegativity. And in combination with a feedback regulation mechanism of online component and potential monitoring, accurate control of key quality attributes of a final product is realized, and the product consistency is ensured.

The present application relates to battery processing and manufacturing technology field, provide a kind of transverse magnetic flux radio frequency induction heating battery pole piece blank area wrinkle removal method, megahertz level radio frequency signal is output by radio frequency power supply, after impedance matching, lossless feed into transverse magnetic flux inductor, generate transverse magnetic force line to make eddy current closed in battery pole piece plane. Again with active water-cooling magnetic flux shield plate generates reverse magnetic field shielding magnetic flux, and through built-in water-cooling channel and timely heat dissipation. While by supporting support roller keeps inductor and pole piece gap constant, cooperate temperature sensor closed loop temperature control and heat to softening state, by production line winding mechanism drive plastic extension of softening zone, finally through frozen roll quenching, overall complete battery pole piece complete heat treatment process. The present application also provides a kind of device, the method and device realize ultra-thin battery pole piece effective induction heating and online annealing. Both can efficiently eliminate pole piece processing residual stress, smooth wrinkle defect, and whole process without damaging coating structure, no powder crack problem.

This invention relates to the field of new energy vehicle charging technology, specifically to an inductive authorization-based plug-and-charge home AC charging pile and its control method. The core solution involves constructing multiple security gating mechanisms through radio frequency induction identity verification, multi-coil parking space boundary determination, gun trajectory closed-loop verification, and PE physical presence proof, enabling safe and convenient plug-and-charge functionality for home charging piles. The method covers establishing a safe default state upon power-on, vehicle and parking space parameter calibration in binding mode, standby pre-authorization session management, spatial closed-loop verification during gun insertion, physical proof of grounding link, multi-condition linkage main circuit control, and full-cycle verification of charging. This invention requires no additional network or manual operation, effectively solving safety hazards such as accidental authorization triggering, cross-parking space charging, and grounding failure in home scenarios, and is suitable for home charging needs in private parking spaces.

The invention relates to an optical fiber connector, an optical fiber adapter and an optical fiber connector assembly, the optical fiber connector comprises a connector main body, the connector main body is provided with a first miniature cavity, and a radio frequency identification light-emitting module or a radio frequency identification photosensitive module is embedded in the first miniature cavity; the radio frequency identification light-emitting module is configured to be driven to be lightened by utilizing radio frequency induction energy, and the radio frequency identification photosensitive module is configured to supply power to the radio frequency identification photosensitive module after receiving an optical signal, so that the radio frequency identification photosensitive module can be identified by external radio frequency induction equipment. According to the method and the device, port-level refined identification can be realized, identification in a photographing mode is not needed, and the technical problems of unstable identification accuracy and relatively low operation and maintenance efficiency in related technologies are solved.

This invention discloses a method for preparing ultra-high purity vanadium single crystals using the cold crucible pulling method, comprising: raw material pretreatment, acid washing with a mixed acid solution of HNO3:HF:H2O=(2-4):(0.5-1.5):(8-12), and then... ‑5 Degassing at 800-900℃ under vacuum; smelting and refining: the raw material is placed in a water-cooled copper crucible with a 50-200μm thick yttrium-stabilized zirconium oxide or hafnium oxide coating, and smelted at ≤5×10⁻⁶ ℃. ‑5 Under vacuum and ≥6N ultra-high purity argon gas protection, melting is achieved through 15-25kHz radio frequency induction heating, followed by electron beam or laser scanning refining for 3-8 minutes; crystal lead-in and necking growth are then performed using… <100> or <110> Crystal orientation seed crystal, necking diameter 3-5mm, length ≥20mm; shoulder formation and constant diameter growth, pulling speed 2-10mm / h, rotation speed 5-15rpm, closed-loop diameter control, axial temperature gradient 10-30℃ / cm; tailing and cooling, programmed cooling at ≥50℃ / h. The vanadium single crystal prepared by this invention has a purity ≥99.9995%, total interstitial atoms ≤10wppm, and dislocation density ≤10 3 cm ‑2 With a diameter of 20-80mm and a length of 100-200mm, it can be applied to the fields of semiconductor devices, superconducting devices, or quantum computing devices.

The invention discloses a warehouse management system based on ultrahigh frequency radio frequency induction, and belongs to the field of material management. Comprising a goods allocation electronic tag system, a tray electronic tag system, a single goods electronic tag, a warehouse doorway / channel radio frequency induction system and a radio frequency induction handheld terminal inventory system. An electronic tag is installed on each goods allocation, a tray electronic tag is installed on each tray, an electronic tag is installed on each single goods, a radio frequency induction handheld terminal is used for carrying out inventory work in the inventory process through a warehouse gate / channel radio frequency induction system, and read data are sent to a background server for processing. Through automatic and intelligent management, human errors and loss are reduced, the warehouse operation efficiency is improved, the operation cost is reduced, real-time and accurate inventory data support is achieved, and a powerful basis is provided for enterprise decision making; and full-chain tracking and visual management of the articles from warehousing to ex-warehouse are realized.

The invention relates to a radio frequency plasma-high frequency inductance composite gas atomization powder making device and method, and the device comprises an atomizing nozzle which is provided with a nozzle center hole; an opening is formed in one end of the restraining structure, the opening end is inserted into the nozzle center hole, and a gas inlet used for introducing plasma gas is formed in the side wall of the restraining structure; the high-frequency induction coil is arranged in the restraint structure and used for being arranged outside the alloy material in a sleeving mode and enabling the alloy material to be melted at a high temperature; the radio frequency plasma generator is arranged in the restraint structure and is arranged below the high-frequency induction coil, and the position of the air inlet is higher than that of the radio frequency plasma generator; and the radio frequency induction coil is arranged outside the constraint structure in a sleeving manner and corresponds to the radio frequency plasma generator, and the radio frequency induction coil is used for exciting the plasma gas into radio frequency plasma. The method has the effect of reducing the powder granularity on the basis of improving the powder yield.

The invention relates to the technical field of powder spheroidizing, in particular to a conveying spheroidizing system and method for plasma spheroidizing of superfine titanium alloy powder. The invention discloses a conveying and spheroidizing system for plasma spheroidizing of superfine titanium alloy powder. The conveying and spheroidizing system comprises an in-situ activation grading device, a coaxial layered conveying device and a plasma spheroidizing device, the in-situ activation grading device comprises a sealed stock bin, a vertical shaft stirring paddle and a side shaft stirring paddle, wherein the vertical shaft stirring paddle and the side shaft stirring paddle are arranged in the stock bin. According to the conveying and spheroidizing system, low-energy-consumption and high-stability activation and conveying of superfine powder can be achieved, the defect of adhesion of coarse powder and fine powder is overcome, products controllable in particle size distribution and extremely high in sphericity degree can be obtained, adhesion and accumulation of the powder on a nozzle of the radio frequency induction plasma torch are avoided, and the service life of the powder is prolonged. The problems that energy consumption and stability of a traditional powder feeding technology are poor, coarse powder and fine powder are prone to adhesion due to mixed conveying of the coarse powder and fine powder, and powder particles are prone to adhesion and accumulation on the inner wall of a nozzle are solved.

The invention discloses a multi-role dynamic view construction method and system based on a single digital identifier, and a terminal, and relates to the technical field of Internet information display and data security. The method comprises the following steps: a server receives a request initiated by a terminal through optical scanning or radio frequency induction (such as NFC) analysis of a unique digital identifier; matching a permission matrix according to the identity credentials of the visitors; dynamically arranging a view in real time at a server, only calling component codes which the role has right to check and assembling the component codes and data based on the component dependency relationship, and blocking the issuing of underlying codes of contents which are not right to check; and finally, sending the lightweight resource packet to a terminal browser for rendering. The invention further provides an arrangement platform supporting interactive configuration and a portable display terminal. According to the method, the differentiated and safe compliant views are displayed to different users based on the same physical identifier on the premise that special client software does not need to be installed through the technologies of server code-level cutting and browser zero-residue rendering.

A method for preparing high-purity nano-tin oxide powder using radio frequency inductively coupled plasma (RFIC) involves placing tin powder with a purity of at least 99.99% and a particle size of 35-40 µm into an intermittent feeder. Plasma gas is introduced into the furnace chamber, and the RF power supply is turned on. Energy is coupled through an RF induction coil to generate an RFIC plasma arc. The tin powder is then transported to the high-temperature zone at the center of the RFIC plasma arc via a carrier gas, allowing it to completely vaporize without solid electrode contact, generating tin vapor. Oxygen is then introduced into the tin vapor zone, causing an oxidation reaction that produces tin oxide vapor. The resulting tin oxide vapor is rapidly cooled, condensing into nano-sized tin oxide particles with a purity of 99.99%. The resulting nano-tin oxide powder exhibits high purity, uniform particle size, and good dispersibility.

In an embodiment, the present disclosure pertains to electric field generators that include a signal generator electrically connected to a power amplifier, a impedance matching circuit electrically connected to the power amplifier, and a power divider electrically connected to the impedance matching circuit and to at least one of a first wall, a second wall, a third wall, a fourth wall, or a base area. In an additional embodiment, the present disclosure pertains to method of determining radio frequency (RF)-induced heating on a medical device utilizing an electric field generator of the present disclosure. Additional embodiments of the present disclosure pertain to methods of making electric field generators for testing a medical device.

The application discloses a device for preparing beta-Ga2O3 crystal through precise heating, and relates to the technical field of beta-Ga2O3 crystal preparation. The device comprises a sintering furnace body, a crucible and beta-Ga2O3 crystal. The crucible is arranged in the sintering furnace body, and Ga2O3 melt is arranged in the crucible. The device further comprises a crystal growth mold connected with the crucible, a first insulation and heat insulation layer connected with the crucible, a second insulation and heat insulation layer connected with the crucible, an electromagnetic heating system arranged outside the crucible, a radio frequency induction heating system arranged outside the crucible and located at the top of the electromagnetic heating system, a slit arranged in the crystal growth mold, and a temperature sensing mechanism having one end connected with the electromagnetic heating system and the other end connected with the radio frequency induction heating system. The electromagnetic heating system and the radio frequency induction heating system are used for heating the crucible, so that the Ga2O3 melt is melted, and the beta-Ga2O3 crystal is grown on the crystal growth mold. The temperature sensing mechanism is used for accurately sensing and controlling the temperature of heating, so that the rapid and high-quality growth of the beta-Ga2O3 crystal is ensured.

A radio-frequency plasma torch is provided. The radio-frequency plasma torch comprises a torch housing with a torch channel, a dielectric sheath, an induction coil that is circumferentially disposed around the dielectric sheath, where the induction coil generates an alternating, high-gradient magnetic field, and at least one conductive rod that is connected to an external voltage source for generating a high-voltage spark discharge. The high-voltage spark discharge and the alternating, high-gradient magnetic field collectively ionize the at least one plasma forming gas for generating a flow of plasma within the torch channel. The plasma torch also includes an impeller unit that is rotatably mounted within the torch channel of the torch housing, proximate the inlet section of the torch housing, such that when the impeller unit is driven to rotate, the rotation of the turbine induces a reverse vortex flow of plasma forming gas within the torch channel.

The utility model relates to the technical field of ceramic materials, in particular to a double-sided ceramic plate. The device comprises a ceramic substrate, a gum layer is adhered to an inner cavity of the ceramic substrate, a circuit board is slidably connected to an inner cavity of the gum layer, a sensor is installed on the surface of the circuit board, the model of the sensor comprises a PFID radio frequency IC induction card, and four telescopic rods are fixedly connected to one side, away from the gum layer, of the circuit board. The sides, away from the circuit board, of the four telescopic rods are fixedly connected with a connecting plate, the connecting plate is fixedly connected with an inner cavity of the ceramic substrate, the arc faces of the telescopic rods are sleeved with springs, the two ends of the springs are fixedly connected with the circuit board and the connecting plate respectively, and the connecting plate and the inner cavity of the circuit board are slidably connected with a heat conduction plate. The problem that in the daily use process, a sensor installed in a ceramic plate is prone to displacement due to external conventional shaking, vibration and other factors, and consequently the sensor is damaged is solved.