2237 results about "Induction heating" patented technology

The invention relates to the field of electromagnetic induction heating, and discloses a global temperature control method for an electromagnetic induction heating system, which comprises the following steps of: acquiring a two-dimensional temperature distribution diagram of a heating area at a plurality of key moments through a multi-point infrared temperature acquisition and induction heating coil synchronous excitation mechanism; performing multi-dimensional region segmentation on the global temperature scene data set, and identifying a temperature abnormal region and a thermal diffusion path feature based on a boundary thermal gradient change rate and an energy transfer path analysis algorithm; a distributed power regulation and control method and a historical thermal field evolution rule are introduced based on the regional thermal response feature map; thermal field feedback information is collected in real time in the temperature control process, and the current global thermal field state is judged in combination with a thermal distribution stability judgment criterion; and based on the updated control parameter configuration table, in combination with the thermal performance parameters of the material and the geometric information of the workpiece, generating an operation instruction set of the heating process, and executing intelligent regulation and control. The induction heating device has the advantage of improving the induction heating quality.

The utility model discloses laser cladding equipment with a high-temperature heating function, which relates to the technical field of laser processing and comprises a working table, a supporting plate is fixedly connected to the upper surface of the working table, a sliding groove is formed in the supporting plate, an adjusting mechanism is arranged in the sliding groove, and a laser head is arranged above the working table. A protection mechanism is arranged above the workbench, and an induction heating ring is fixedly installed on the upper surface of the workbench. By arranging the induction heating ring, a workpiece above the workbench can be subjected to high-temperature heating pretreatment, by arranging the protection mechanism, energy in the heating process of the induction heating ring can be concentrated, the heating uniformity of the workpiece is improved, the heating speed of the workpiece is increased, and by using the induction heating ring and the protection mechanism in a matched mode, the heating efficiency is improved. And the workpiece can be subjected to high-temperature heating pretreatment in advance, so that the situation that cracks are generated due to overlarge thermal stress of a material in the cladding process can be reduced, and the overall quality of a cladding layer is improved.

A wireless power transmission apparatus for induction heating includes: a working coil configured to change operation based on selection of a mode of operation from among a plurality of operating modes, the plurality of operating modes including a wireless power transmission mode configured to wirelessly transmit power and a heating mode configured to heat one or more objects, an inverter configured to output, to the working coil, current at an operation frequency, and a controller. The controller is configured to calculate an eccentricity degree between the working coil and a reception coil of a target object, and control, in the wireless power transmission mode, the operation frequency based on the calculated eccentricity degree while performing wireless power transmission to the target object.

The invention relates to the technical field of vacuum induction heating temperature control, and discloses a vacuum induction heating temperature closed-loop control system integrated with SCADA (supervisory control and data acquisition), which is characterized in that a functional material layer with preset Curie temperature is compounded on the surface of an induction coil, and the absolute value of phase difference is analyzed by collecting voltage and current signals of the coil in real time; according to the invention, through the synergistic effect of the electromagnetic impedance sudden change characteristic of the functional material layer and the phase difference detection mechanism, non-contact accurate control of the phase change critical temperature of the workpiece is realized; and meanwhile, due to the coupling application of the asymmetric micro-pulse waveform design and the dynamic adjustment strategy, the contradiction between thermodynamic response and electromagnetic interference in a vacuum environment is effectively balanced, and the control precision and stability of the system are remarkably improved.

The invention discloses a preparation method of a slot wire for a superconducting wire. The preparation method comprises the following steps: manufacturing a copper bar into a copper flat wire through a drawing process; soaking the copper flat wire in a soldering flux, and then washing and air-drying the copper flat wire to obtain a prefabricated copper flat wire; combining the plurality of prefabricated copper flat wires according to the cross section structure of the superconducting wire; performing induction heating welding on the plurality of combined prefabricated copper flat wires through a welding mold to obtain a copper groove wire; performing water cooling, cleaning and drying on the copper slot wire to obtain a copper slot wire with a clean surface; and screening the copper slot line through a laser diameter measuring instrument and eddy current flaw detection equipment to obtain a copper slot line finished product. The copper slot wire with the groove in the surface is obtained by welding the copper flat wire, integrated forming of the structural slot wire is achieved, the production efficiency is improved, welding and finishing forming are carried out by designing dies of different structures, the surface quality of the copper slot wire is improved, the slot wire of a high-precision complex structure is obtained, the drawing speed is high, and the production cost is low. And large-scale production of the copper slot line is facilitated.

An apparatus for monitoring an apparatus for the inductive heating of a metal material including a detection device and an evaluation device. In order to automate the loading of the inductive heating apparatus with bulk material or metal material, according to the invention the detection device is an optical sensor for detecting distance and the evaluation device is designed to determine, on the basis of the distance detected by the detection device, the fill level of the inductive heating apparatus and to output a corresponding signal, the signal being suitable for further use in a control process for the feeding of metal material to the inductive heating apparatus. The invention also relates to a method for automatically loading an apparatus for the inductive heating of a metal material and to a control system for an apparatus for the inductive heating of a metal material.

The electromagnetic induction normalizing device comprises a flat car, the flat car is provided with a top plate and a bottom plate, one side of the flat car is of an open structure, and a cooling water tank and a power source are arranged in the flat car. The stand column is connected with the bottom of the flat car top plate and provided with an upper plate shaft and a lower plate shaft; the support comprises a telescopic rod, one end of the fixed side of the telescopic rod is connected with the stand column lower plate shaft, a cantilever rod is arranged on the telescopic rod, and the two ends of the cantilever rod are connected with the telescopic rod and the stand column upper plate shaft respectively. An auxiliary support device; the intermediate-frequency generator is connected with one end of the movable side of the bracket telescopic rod through a suspension device; an induction heater. Compared with the prior art, the steel rail normalizing device has the advantages that 1, the normalizing device can alternately work between two steel rails conveniently; 2, the supporting stability is improved; 3, the induction heating device is lifted and lowered and is easy to disassemble and assemble; and the heat dissipation performance and the sealing performance are improved.

The invention discloses an efficient anti-freezing and anti-blocking integrated induction heating system and method for an oil and gas pipeline, belongs to the technical field of anti-freezing and anti-blocking of oil and gas pipelines, and aims at solving the problems that in the prior art, heating efficiency is low, energy consumption is huge, heating uniformity and adaptability are poor, the system integration degree is low, and the intelligent degree is insufficient. Comprising the steps of S1, induction heating unit arrangement and power management; s2, real-time temperature monitoring and data acquisition; s3, intelligent data analysis and precise heat management; the electromagnetic induction heating principle is adopted, the induction coil directly heats the pipeline and the internal medium, heat conduction loss and heat energy radiation loss of heating modes such as traditional resistance wires and heat tracing bands are reduced, the intelligent power management module can optimize power supply and power adjustment, and the self-adaptive environment and load adjustment strategy is combined, so that the self-adaptive load adjustment is achieved. The heating power can be automatically adjusted according to the environment temperature and the pipeline load, the anti-freezing and anti-blocking effect is guaranteed, meanwhile, energy consumption is remarkably reduced, and the burden of an electric power supply system is relieved.

The invention discloses an ultrahigh-temperature thermal expansion coefficient tester, which relates to the technical field of detection equipment and comprises an equipment platform, a guide rail, a fixed side and a movable side, the guide rail is arranged on the equipment platform, the fixed side is arranged on one side of the equipment platform, and the movable side is arranged on the guide rail in a sliding mode. The fixed side comprises a displacement detection module and a bearing support; one end of the bearing support is connected with the detection end of the displacement detection module; the moving side comprises an induction heating furnace and a temperature detection module; an insertion opening is formed in the side, facing the fixed side, of the induction heating furnace, and the bearing support enters the induction heating furnace through the insertion opening. According to the invention, the measured material is heated in an induction heating manner, so that the heat loss is greatly reduced, the energy consumption ratio of the equipment is reduced, and meanwhile, the limiting temperature of the thermal expansion coefficient tester is increased. The insulating layer can reduce heat loss, improve the heating efficiency, reduce the temperature gradient in the sample and improve the test precision. And the temperature change condition is directly measured through the infrared thermometer, so that the measurement is more accurate.

The invention relates to an aluminum bar permanent magnetic induction heating method for extruding an aluminum alloy profile, which mainly solves the problem of poor heating uniformity of an aluminum bar heated by electromagnetic induction in the prior art, and comprises the following steps of: a, placing the aluminum bar on a conveying mechanism for conveying, pushing the aluminum bar into a conveying channel of a heating mechanism through a pushing mechanism, and heating the aluminum bar in the conveying channel; the aluminum bar is arranged in a composite magnetic field generated by the permanent magnet assembly; b, a gradient magnetic field is formed through alternate arrangement of permanent magnet polarities of the permanent magnet assembly, meanwhile, the electromagnet generates a high-frequency alternating magnetic field through alternating current, eddy current is excited on the surface of the aluminum bar through the magnetic field coupling effect, conduction type heating from outside to inside is achieved, and the electromagnet is independently controlled through a sub-power source of the power source system; local magnetic field compensation is realized through independent current control, and the compensation range is + / -0.3 T; c, the temperature of the aluminum bar is detected through an infrared temperature sensor and fed back to a control system, and the distance between the permanent magnet unit and the aluminum bar is dynamically adjusted.

The invention provides an online detection and compensation method for local decarburization of a high-strength spring steel band, which comprises the following steps: arranging an oxygen content sensor in a continuous annealing furnace to monitor oxygen concentration in real time, and marking a potential decarburization risk section; scanning the risk section steel strip by adopting infrared thermal imaging, and generating a carbon distribution map to position a decarburization area; pulse laser heating is conducted on the decarburization area, and methane-argon mixed gas is introduced to achieve in-situ carburization; and finally, local thermal stress is eliminated through high-frequency induction heating. According to the method, decarburization risk dynamic early warning, defect accurate positioning, local efficient carbon supplementation and stress homogenization control are achieved, and the surface quality and fatigue performance of the steel strip are remarkably improved.

The utility model discloses a valve device and a semiconductor device processing device. The valve apparatus includes: a valve body including an external coil therein; the valve plate is movably arranged in the valve body, and the opening degree of the valve equipment is adjusted by adjusting the pose of the valve plate; and an internal coil provided inside the valve plate, the internal coil generating an eddy current through an alternating magnetic field generated in the valve body by an alternating voltage applied to the external coil to inductively heat the valve plate. By means of the valve equipment, the surface of the valve plate can be directly heated, the temperature of the valve plate is increased, and therefore blockage of the valve plate caused by deposition of reaction by-products on the valve plate in the carbon mask deposition process is reduced.

A method (10) for joining components (20, 22), particularly metal components, by means of a joining element (12) which is deformed during the joining process, comprising the following steps: coating (S2, S3) a joining element (12) with a temperature-stable coating (B1,B2) ; preheating (S6) at least one of at least two components (20, 22) in an area of a joining location to a temperature in the range from 90°C to 1.400 °C, preferably by plasma-heating, laser-heating, electric arc heating and / or induction heating, wherein the components (20, 22) are stacked on top of each other; and driving the coated joining element (12) into the stacked components (20, 22).

The invention relates to the technical field of metal powder processing, and discloses a high-performance dissimilar metal powder precision forming process which comprises the following steps: filling powder into a mold cavity, applying vibration disturbance, monitoring the change rate of a phase lag angle, judging that the powder is dense when the change rate is lower than an offset threshold value, outputting a pressing mode switching signal, an induction heating device is used for applying transient thermal load to induce cracks of an oxide film on the surfaces of particles, the pressure load is applied, the side wall is adjusted to generate shear displacement to peel off the oxide film, and metallurgical bonding is achieved through fresh metal surface contact. An interface is activated through thermal expansion mismatch and mechanical friction synergistically, a high-density uniform green body is obtained at low temperature, generation of brittle intermetallic compounds is inhibited, and the fatigue resistance of a formed part is enhanced.

The invention discloses a differential closed-loop control method and device for a dual-frequency induction heating power supply inverter, and belongs to the technical field of induction heating power supplies, and the method comprises the steps: carrying out the learning and analysis of a control frequency relation of the dual-frequency induction heating power supply inverter through a deep learning method, and determining an optimal control frequency; a multi-level inverter is used as a power supply inverter for dual-frequency induction heating; s2, according to the optimal control frequency determined in the step S1, performing differential closed-loop control on the output frequency of the multi-level inverter by adopting a control method combining PWM control and PM control; pWM and PM control parameters are dynamically adjusted through a real-time adjustment mechanism of differential closed-loop control. According to the invention, the frequency adjustment precision and the power output stability of the dual-frequency induction heating power supply inverter are improved.

The invention discloses a current source type LCCL double-frequency resonance system and a parameter matching method thereof, which are suitable for synchronous double-frequency induction quenching of complex workpieces such as gears. The system is composed of two current type resonant inverters working at a low frequency and a high frequency respectively and a dual-frequency LCCL resonant cavity, and dual-frequency current superposition is realized through parallel output. The double-frequency LCCL resonant cavity has two parallel resonance points, a mode based on simplified topology is adopted to simplify parameter design, and meanwhile design errors are maintained at a low level. A power matching coefficient is introduced, the ratio of high-frequency output power to low-frequency output power is adjusted by adjusting the value of the power matching coefficient, and the problem of double-frequency power unbalance caused by frequency variation characteristics of load equivalent resistance and the like is solved. The superposed double-frequency current forms a low-frequency envelope embedded high-frequency oscillation composite waveform on the induction heating coil, cooperative control of tooth root deep quenching (low frequency) and tooth surface hard quenching (high frequency) is achieved, and the method has the advantages of being simple in parameter design, high in power decoupling performance, high in operation stability and the like.

A full-continuous short-process production method for a metal plate strip comprises the steps of smelting, tundish induction heating, thin strip continuous casting, rolling, 1 # flying shearing, cooling after rolling, acid-free descaling, 2 # flying shearing and strip steel coiling, and a steel coil without oxide scale on the surface is obtained. The metal plate strip comprises the following components in percentage by weight: 0.01-0.06% of C, less than or equal to 0.15% of Si, less than or equal to 0.85% of Mn, less than or equal to 0.02% of P, less than or equal to 0.005% of S and Alslt; 0.001%, less than or equal to 0.0050% of Ca, and the balance Fe and other unavoidable impurities. The method comprises the following steps: carrying out on-line hot rolling on a cast strip cast by double rollers through an on-line six-roller mill, and carrying out an acid-free descaling process to obtain a steel coil without oxide scale on the surface. Products produced through the method are high in ductility, good in forming performance and high in surface quality, and the purpose that cold is replaced by hot in the field of high-end products can be truly achieved.

The invention belongs to the technical field of metal heat treatment, and relates to a rapid quenching and tempering process of high-strength steel, which comprises the following steps: preheating a steel workpiece, then transferring to a vacuum induction furnace, heating to a first quenching temperature, preserving heat, and then periodically fluctuating and controlling the temperature to obtain a quenched workpiece; performing high-frequency induction heating on the quenched workpiece to a first tempering temperature, preserving heat, and performing water cooling after heat preservation to finish first tempering treatment; and then carrying out medium-frequency induction heating to a second tempering temperature under the alternating magnetic field, preserving heat, and air-cooling to room temperature along with the furnace after heat preservation is finished, so as to finish second tempering treatment. By optimizing key steps such as preheating, quenching, cooling and tempering in the heat treatment process, the comprehensive mechanical property of the high-strength steel is remarkably improved, rapid heating and structure homogenization are achieved through two-section preheating, and the problem of workpiece deformation or cracking caused by rapid heating in a traditional preheating process is solved.

The utility model relates to the technical field of metal mechanical property detection testing equipment, in particular to a metal material and hydrogen environment compatibility testing device which comprises an upper clamp, a vacuum pump and a first gas storage bottle, the first gas storage bottle is used for storing high-pressure gas of types required by testing, one end of the upper clamp is detachably connected with a sample, and the other end of the upper clamp is detachably connected with a second gas storage bottle. The upper clamp is used for blocking a central channel of a sample and forming a first cavity body, the vacuum pump and the first gas storage bottle are respectively communicated with the first cavity body, and during use, the upper clamp can be detached from one end of the sample, and the sealed first cavity body is formed between the upper clamp and the central channel of the sample; the second cavity cools the sample to a required temperature, or the sample is heated to the required temperature through the induction heating coil, so that the temperature control during the test of the sample is realized, the test requirement is met, the test accuracy is improved, the test cost is reduced, and the test safety is guaranteed.

The invention discloses a heat treatment process for a high-strength automobile fastener wire rod, and belongs to the field of automobile fastener machining. Comprising the following steps that S1, metal wires are pretreated, and pretreatment comprises ultrasonic cleaning, chemical oil removal and continuous flushing and drying; s2, the metal wire pretreated in the S1 is placed in a heating environment filled with carbon potential control gas and heated to be in a complete austenitizing state, and an online temperature monitoring means is adopted in the period; and S3, high-frequency induction heating is conducted on the metal wire through high-frequency induction heating equipment, and full-section temperature balanced temperature rise is achieved. Through combination of vacuum pretreatment and short-time high-temperature induction heating, surface oxidation and carbon dissipation are effectively reduced, the thickness of a complete decarburized layer and the thickness of a total decarburized layer are remarkably reduced, and the surface strength and fatigue performance of the fastener are improved.

The invention relates to the technical field of industrial process control, and discloses a vacuum induction heating process closed-loop control system applying an industrial mechanism model, which comprises the following steps: acquiring the input active power of an induction coil through a power monitoring unit, and measuring the total external radiation heat flux of the outer wall of a vacuum chamber by a heat flow sensing unit; the embedded decision-making module calculates the thermal-electric response ratio and the time derivative thereof in real time, judges the phase change critical state of the material based on the derivative change and generates a regulation and control instruction, through dynamic capture of the thermal-electric energy balance relation, recognition of the phase change critical point of the material is achieved, and by combining working condition pre-judgment of the vibration spectrum entropy and current ripple characteristic arbitration, the phase change critical state of the material is judged. An anti-interference multi-verification mechanism is constructed, and the robustness of the control system under the preset working condition is improved.

The invention discloses a preparation method of high-purity transparent quartz glass, which comprises the following steps: putting a quartz blank into a crucible, placing induction heating elements on the upper side and the lower side of the quartz blank, and filling the side surface of the quartz blank with a heat conduction material; and putting the crucible into a vacuum induction heating furnace, and sintering to obtain the high-purity transparent quartz glass. According to the invention, the large-size quartz glass with high transparency, extremely low bubble content and low hydroxyl content can be prepared, and the problems of long time consumption and large raw material loss of the high-purity transparent quartz glass fired by the existing production mode are solved.

The invention relates to the technical field of electromagnetic heating temperature rise uniformity optimization, and discloses a train frozen coal induction heating temperature rise uniformity optimization method based on a response surface method and multi-parameter optimization. A second-order polynomial response surface model is designed and established by adopting a central composite test, an axisymmetric coil layout based on a first constant parameterization linear dynamic tolerance sequence is designed, and temperature uniformity is represented by sample standard deviation by applying an NSGA-II multi-objective optimization algorithm under the condition that thawing temperature constraints are met. And carrying out Pareto optimization by taking temperature sample standard deviation minimization and average temperature maximization as targets, and finally determining an optimal parameter combination through a TOPSIS decision method. According to simulation verification, the method can effectively improve the uniformity of the electromagnetic heating temperature field of the inner surface of the frozen coal carriage, and a theoretical basis is provided for engineering application.

A method of attaching a flat flexible cable (FFC) to a plurality of terminals of an electrical connector includes a step of arranging a plurality of terminals within a connector housing, with each terminal defining a weld area adapted to be electrically connected to a conductor of the FFC. The FFC is then positioned proximate the connector housing such that the weld areas of each terminal are arranged directly adjacent a respective one of a plurality of exposed conductors of the FFC. At least the weld areas of the plurality of terminals are heated with an inductive heating source for electrically connecting the plurality of conductors of the FFC to the plurality of terminals.

The invention belongs to the field of induction heating tundishes, and particularly provides a dual-purpose multi-strand continuous casting induction heating tundish device which comprises a heat-resisting inner cladding layer, an outer protection layer is arranged on the outer side of the heat-resisting inner cladding layer, and the heat-resisting inner cladding layer is connected to the inner side of the outer protection layer in a combined mode. A middle heating layer is formed between the outer protection layer and the heat-resistant inner cladding, casting ladle pipes which are connected in a sealed mode are arranged on the two sides of the middle of the inner bottom face of the heat-resistant inner cladding in a penetrating mode, and the bottoms of the casting ladle pipes extend to the position below the bottom face of the outer protection layer in a penetrating mode; according to the method, the air bricks on the inner bottom face of the tundish are comprehensively laid, a heat-resisting inner cladding layer in the tundish can be protected, the tundish is completely prevented from being eroded and damaged by molten metal, the service life of the tundish is prolonged, argon can be injected into all positions in the tundish through laying of the air bricks, and the service life of the tundish is prolonged. And the impurity removal efficiency and quality of the tundish on the internal molten metal are improved.

The hot gas bulging forming system comprises a pipe bending device, a feeding device, a pre-forming device, a heating device, a bulging quenching device and a discharging device which are sequentially arranged, the heating device comprises a heating cavity, and an electrode chuck used for clamping the end of a metal pipe is arranged in the heating cavity; the electrode chuck is connected with an IGBT induction heating device, an infrared thermometer is arranged in the heating cavity, and the infrared thermometer and the IGBT induction heating device are both in communication connection with a controller. According to the hot air bulging forming system, materials with different thicknesses and pipes with complex shapes can be conveniently heated, the heating rate of the materials with different coatings can be adjusted through the controller according to coating characteristics, accordingly, the coatings are protected to the maximum extent, the better product surface quality is obtained, the application range is wide, the heating speed is high, and the production efficiency is high. And the heating efficiency is greatly improved. The invention further discloses a hot gas bulging forming method.

The utility model relates to the technical field of dissimilar material plate tailor-welding processing devices, in particular to a dissimilar material plate tailor-welding laser processing device which comprises a plate conveying assembly, a tailor-welding laser assembly, a guide rail, a control platform and a magnetic induction heating assembly. The bottom of the plate conveying assembly is installed on the working ground, and the guide rail is installed on one side of the plate conveying assembly and is parallel to the conveying direction of tailor-welded plates. The electromagnetic induction heating assembly is mounted below the middle part of the plate conveying assembly; when the laser tailored blank welding device is used, flexible treatment of different temperatures, different heating times and different cooling speeds can be conducted on a welding seam area, the technical problems that performance differences of welding joints of dissimilar material plates are large, and the performance of the plates is not coordinated are solved, the production efficiency is improved, and the production cost is reduced. And the manual operation process is reduced.

A heater and / or a reactor system having a conductive medium and a conductor adjacent to the conductive medium is described. The system has a source of electrical energy coupled to the conductor to provide electrical energy and create a magnetic field around the conductive medium. The system produces an eddy current that heats the conductive medium. Also described are methods of heating using the heater and / or a reactor system.

The present application provides a susceptor for inductively heating an aerosol generating substrate, a preparation method of the susceptor, and an aerosol generating article comprising the susceptor; the susceptor comprises a single alloy prepared by smelting iron, nickel and zircon as main element raw materials, has a Curie temperature of 300-600 DEG C, and the initial magnetic permeability of the alloy presents a peak characteristic with the increase of temperature. The single layer structure susceptor of the single alloy material of the present application realizes the functions of heating and temperature control at the same time, and overcomes the defects of the prior art, such as complex process, high preparation cost, and limited compatibility of electromagnetic induction heating appliances. Meanwhile, the susceptor has a relatively wide magnetic performance variation window and an aerosol generating system performance variation window, and can be flexibly adapted to more aerosol generating substrates.

In a first step S101, the raw material is directly induction heated using a high-frequency induction heating coil (103) while cooling the outer periphery of a raw material (151) to or below the melting point of the raw material by a cooling mechanism (102) to form a raw material melt (152) (raw material melting step). In a second step S102, a seed crystal (161) is brought into contact with the melt (seeding step). In a third step S103, a crystal (153) is grown from the seed crystal (crystal growth step). In the third step S103, the high-frequency induction heating coil and the seed crystal are gradually separated from each other while maintaining the relative distance between the high-frequency induction heating coil and the outer periphery of the raw material, and the crystal is grown in the melt.