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1781 results about "Induction heating" patented technology

Induction heating is the process of heating an electrically conducting object (usually a metal) by electromagnetic induction, through heat generated in the object by eddy currents. An induction heater consists of an electromagnet, and an electronic oscillator that passes a high-frequency alternating current (AC) through the electromagnet. The rapidly alternating magnetic field penetrates the object, generating electric currents inside the conductor called eddy currents. The eddy currents flowing through the resistance of the material heat it by Joule heating. In ferromagnetic (and ferrimagnetic) materials like iron, heat may also be generated by magnetic hysteresis losses. The frequency of current used depends on the object size, material type, coupling (between the work coil and the object to be heated) and the penetration depth.

Global temperature control method for electromagnetic induction heating system

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.
Owner:SHENZHEN KELANG ELECTRIC CO LTD

Vacuum induction heating temperature closed-loop control system integrated with SCADA (supervisory control and data acquisition)

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.
Owner:BOHAI UNIV

Efficient anti-freezing and anti-blocking integrated induction heating system and method for oil and gas pipeline

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.
Owner:SHENZHEN ZHONGKE BLUE OCEAN TECH IND CO LTD

Online detection and compensation method for local decarburization of high-strength spring steel band

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.
Owner:ANHUI XIANGLOU NEW MATERIALS CO LTD

Valve equipment and semiconductor device processing equipment

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.
Owner:PIOTECH (SHANGHAI) CO LTD

Precise forming process of high-performance dissimilar metal powder

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.
Owner:JIANGSU JUNPAI ELECTRONIC TECH CO LTD

Current source type LCCL double-frequency resonance system and parameter matching method thereof

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.
Owner:HUNAN UNIV

Metal plate strip full-continuous short-process production method

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.
Owner:BAOSHAN IRON & STEEL CO LTD

Rapid quenching and tempering process for high-strength steel

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.
Owner:SHAANXI AEROSPACE TIMES NAVIGATION EQUIP CO LTD

Device for testing compatibility of metal material and hydrogen environment

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.
Owner:Liupanshan Laboratory

Heat treatment process of high-strength automobile fastener wire

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.
Owner:TAICANG FENGJIN METAL PRODUCTS CO LTD

Vacuum induction heating process closed-loop control system applying industrial mechanism model

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.
Owner:BOHAI UNIV

Induction Soldering Method for Terminating Terminals to FFC / PFC Cables to Various Terminals

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.
Owner:TE CONNECTIVITY SOLUTIONS GMBH

Susceptor and method of manufacturing the same, aerosol article

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.
Owner:SHENZHEN FEIWU TECHNOLOGY CO LTD +1

Method and device for growing crystal

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.
Owner:C&A CORP +1

Electromagnetic induction heating module, heating equipment and slab production line

The utility model discloses an electromagnetic induction heating module, heating equipment and a slab production line, and relates to the technical field of induction heating. The heating module comprises a shell, a coil, and a first magnetic conductive assembly, a second magnetic conductive assembly and a third magnetic conductive assembly which are sequentially arranged along the length direction of the coil, the first magnetic conductive assembly and the third magnetic conductive assembly respectively correspond to two side parts of a to-be-heated object, and the second magnetic conductive assembly corresponds to the middle part of the to-be-heated object; the first magnetic conductive assembly and the third magnetic conductive assembly each comprise a first magnetizer which is matched with the coil and can move up and down, and the second magnetic conductive assembly comprises a second magnetizer which is matched with the coil and is fixed. By adjusting the gap between the first magnetizer and the to-be-heated object, the heating temperature of the area corresponding to the to-be-heated object is adjusted, and the temperature uniformity of the to-be-heated object in the width direction is achieved.
Owner:HUNAN ZHONGKE ELECTRIC CO LTD

Heat treatment process of gear

The invention discloses a heat treatment process of a gear, which relates to the technical field of automobile gear heat treatment, and comprises the following steps: S1, blanking, S2, forging, S3, normalizing: preheating the gear in a preheating furnace by adopting a heating mode of combining infrared radiation and hot air circulation, S4, rough machining, S5, carburizing and quenching: carburizing and quenching, s6, induction heat quenching: performing induction heat quenching on an induction coil; S7, nitriding treatment; S8, low-temperature tempering; S9, finish machining; normalizing is combined with infrared radiation, hot air circulation preheating and induction heating, the effects of reducing energy consumption and machining cost and improving production efficiency are achieved, the forging force is reduced through isothermal forging, the energy consumption of equipment is greatly reduced, pulse type vacuum carburizing, high-pressure gas quenching and induction heat quenching are adopted to introduce a self-adaptive induction heating technology, and the energy consumption of equipment is greatly reduced. And a plasma nitriding technology and a composite nitriding technology are adopted, so that the surface hardness, wear resistance and fatigue strength are improved.
Owner:HANGZHOU HECHENG TECH CO LTD

A method and apparatus for high-frequency coil heating and forming of titanium alloy ring-rib parts.

This invention provides a high-frequency coil heating forming device for titanium alloy ring-ribbed parts, comprising a high-frequency induction heating unit, an inner-support rotary chuck unit, an automatic horizontal rotary unit, a forming wheel unit, and a hydraulic power unit. The inner-support rotary chuck unit is mounted on the automatic horizontal rotary unit and uses a slider to round the ring ribs. The hydraulic power unit provides power for the slider movement and is located below the automatic horizontal rotary unit. The high-frequency induction heating unit and the forming wheel unit are respectively mounted on the sides of the automatic horizontal rotary unit. The high-frequency induction heating unit heats the ring rib material on the inner-support rotary chuck unit through a high-frequency heating coil, and the forming wheel unit is used to process the end flange structure of the ring ribs. This invention achieves efficient heating of titanium alloy ring-ribbed parts to their forming temperature and maintains it constant. The horizontal rotary table performs horizontal rotational motion, coupled with the forming wheel, to complete the hot forming of the vertical edges of the ring ribs.
Owner:BEIJING HANGXING MACHINERY MFG CO LTD

High-quality high-speed wire rolling method for low-alloy high-speed steel wire rod based on continuous casting forming

According to the high-quality high-speed wire rolling method for the low-alloy high-speed steel wire rod based on continuous casting forming, gradient heating is conducted through the step type heating furnace, preheating of a continuous casting blank is uniform, and phase change stress is reduced. The initial rolling temperature is set and controlled to be 1060-1100 DEG C, the finish rolling temperature is controlled to be 950-1050 DEG C, the spinning temperature is controlled to be 980-1030 DEG C, and the highest rolling speed is 25 m / s. And after rough rolling, induction heating temperature compensation is carried out to increase the surface temperature of the blank, the temperature is set to be 1000-1040 DEG C, the temperature compensation time is controlled to be 10-20 s, and surface cracks and head wind caused by too low temperature are prevented. And closing the cover plate after spinning, adopting heat collection, immediately entering a slow cooling tunnel furnace for furnace cooling after doffing, and discharging for annealing after 48 hours or longer. A continuous casting technology is used for replacing a traditional die casting technology, controlled rolling and controlled cooling in the rolling process are matched, composition segregation is remarkably reduced, the core quality is improved, carbides are effectively refined, the uniformity of products is guaranteed, the production efficiency is improved, the production cost is reduced, and the influence on the environment is reduced; and a new process and a new route are provided for producing the high-quality low-alloy high-speed steel wire rod.
Owner:JIANGSU SHENYUAN SPECIAL STEEL

Induction heating path optimization method suitable for heterogeneous silencing structure

The invention discloses an induction heating path optimization method suitable for a heterogeneous noise elimination structure, and particularly relates to the field of induction heating path optimization of the heterogeneous noise elimination structure, and the method comprises the steps: building a grid coordinate in a target region, collecting the heat conductivity coefficient, the specific heat capacity, the thermal resistance value and the induction coil gap value of each grid node in the grid coordinate, generating a thermal response model; and performing heat conduction calculation on the thermal response model and a preset heating power curve, calculating a temperature rise value of each grid node in a fixed preset heating time, marking the grid nodes of which the temperature rise values reach or exceed a safe temperature threshold and the adjacent grid nodes as heat concentration areas, and generating risk area data after gathering the heat concentration areas. A risk assessment and dynamic reordering mechanism based on local thermal characteristic difference is introduced in a heating path planning process, so that advanced identification and real-time avoidance of a heat concentration area are realized.
Owner:WUXI YOUCI ENVIRONMENTAL PROTECTION TECH CO LTD

Annealing equipment for rare earth alloy conductor wire drawing process

The invention relates to annealing equipment for a rare earth alloy conductor wire drawing process, which relates to the technical field of rare earth alloy conductors and comprises a workbench, an annealing furnace is arranged above the workbench, a power box is arranged on one side of the annealing furnace, a high-frequency induction heating coil is arranged in the annealing furnace, and a rotating seat is arranged at one end of the annealing furnace. A rotating block is fixedly connected to the upper end face of the rotating seat, a supporting rod is arranged above the rotating block, a rotating screw rod penetrates through the supporting rod, two limiting rods are arranged on the two sides of the supporting rod, connecting curved rods are arranged between the limiting rods and the supporting rod, a supporting plate is horizontally arranged at the top end of the supporting rod, and a two-way screw rod is arranged in the supporting plate; the two ends of the two-way screw are in threaded connection with two clamping rods correspondingly, and arc-shaped clamping plates are arranged on the opposite sides of the clamping rods correspondingly. The position of the wire is fixed, and the height is adjusted through the thickness of the wire, so that the wire always faces the center of the high-frequency induction heating coil, uniform heating in the subsequent annealing process is ensured, and the product performance is favorably improved.
Owner:YAN TAI XIN TAI DIAN LAN YOU XIAN GONG SI

Roller hot jacket dismounting and mounting equipment

The utility model discloses roller hot jacket dismounting and mounting equipment which comprises a rack, a control box, an induction heating device, a lifting mechanism and a supporting mechanism, the lifting mechanism is fixed on the rack, a heating coil of the induction heating device is horizontally arranged, the heating coil is fixedly connected with the lifting mechanism through a support, and the heating coil is sleeved on a roller sleeve of a roller. The lifting mechanism drives the heating coil to do vertical reciprocating motion along the axis of the roller sleeve, the supporting mechanism is located under the heating coil and fixed to the rack through a support, the supporting mechanism vertically supports one end of the roller, the induction heating device and the lifting mechanism are electrically connected with the control box, and the control box is fixed to the rack. Compared with the prior art, the thermal sleeving device has the beneficial effects that the thermal sleeving device can perform thermal sleeving and thermal dismounting on the roller sleeve and the roller core, and is easy to operate, high in safety and low in cost.
Owner:SICHUAN LIAOYUAN MASCH CO LTD

Magnetic resonance compatible implantable electrode wire with shunt head end structure and medical equipment

The invention discloses a magnetic resonance compatible implantable electrode wire with a shunt head end structure and medical equipment. An electrode head section comprises a spiral electrode electrically connected with an inner wire body and a ring electrode electrically connected with an outer wire body; the spiral electrode and the ring electrode transmit an electric signal sent by the implanted medical device to a targeted treatment part to be electrically stimulated; the spiral electrode comprises a spiral structure; the spiral structure is a multi-turn equidistant spiral structure, and under the action of a high-frequency energy field, the spiral structure can serve as a series inductor to generate large impedance so as to reduce induction current flowing to the spiral electrode and human tissue, and therefore electrode heating is reduced. The structure of the electrode tip section is improved, and the problems that electromagnetic field energy is coupled, eddy current and induction current are formed, induction heating is generated, and even wrong electric pulse signals are transmitted to a human body on the implantable medical device, so that adverse effects are generated on the safety of a patient are effectively solved.
Owner:CORERHYTHM MEDICAL TECH (HANGZHOU) CO LTD

Multi-frequency induction heating power supply and control method thereof

The invention discloses a multi-frequency induction heating power supply and a control method thereof, and the power supply comprises an inverter circuit module which is used for outputting a multi-frequency driving voltage, a bidirectional switch module which is used for controlling a heating mode, and a multi-frequency resonance module which is used for multi-frequency induction heating and power decoupling. The control method corresponds to the multi-frequency induction heating power supply. According to the invention, the inversion module outputs a multi-frequency driving voltage, the bidirectional switch module controls a heating mode, and the multi-frequency resonance module realizes multi-frequency heating and power decoupling; the whole structure is simple, the module collaboration is high, a hardware basis is provided for multi-frequency heating, the requirements of different workpieces can be met, meanwhile, multi-frequency crosstalk is avoided in an assisting mode, and the heating reliability and adaptability are improved.
Owner:HUNAN UNIV

Petroleum pipeline thick-wall hot pipe bending equipment with medium-frequency induction heating device

The invention relates to the technical field of pipe bending machines, and discloses petroleum pipeline thick-wall hot pipe bending equipment with a medium-frequency induction heating device. The petroleum pipeline thick-wall hot pipe bending equipment comprises a core rod body, the core rod body comprises a guide rod connected with a rack and a guide column arranged at the tail end of the guide rod, and the tail end of the guide column is provided with at least two supporting joints which are in spherical hinge joint; elastic edges are arranged on the edges of the supporting joints and filled with hydraulic oil. According to the device, through coaxial and synchronous rotation matching of the wheel die and the clamping die, the guiding and limiting effects of the guiding die and the internal supporting design of the core rod body, a cooperative machining mechanism of external fixing, external guiding and internal supporting is formed, and the problems of axial displacement and radial deviation in the bending process of the thick-wall petroleum pipeline are effectively avoided. In the core supporting structure, multiple sets of supporting joints capable of flexibly rotating can be attached to the inner wall in a self-adaptive mode along with the bending radian of the pipeline, and a dynamic supporting system composed of elastic edges and hydraulic oil can dynamically adjust the supporting force according to the bending angle.
Owner:JIANGYIN NANFANG PIPE FITTINGS MFG CO LTD

Follow-up type double-sided induction heating auxiliary incremental forming device, method, equipment and medium

The invention discloses a follow-up type double-face induction heating auxiliary incremental forming device, method and equipment and a medium, and relates to the field of sheet metal forming. The forming tool heads are fixed to the tail end of the mechanical arm, the two sides of the to-be-machined plate are each provided with one forming tool head, and the forming tool heads are used for extruding the to-be-machined plate to enable the to-be-machined plate to deform; and the electromagnetic induction heating device is rotationally connected with the mechanical arm through a mounting bracket, and the electromagnetic induction heating device is used for providing an electromagnetic field to heat the to-be-processed plate. And the processing performance of the plate is improved in an electromagnetic induction auxiliary heating mode.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Copper wire annealing temperature gradient control device

The invention discloses a copper wire annealing temperature gradient control device which comprises a box body, and an inert gas supply source, an induction heating power supply, a control unit and a cooling water supply source are arranged outside the box body. The front end of the box body is provided with a door body, a left hinge and a right lock catch. A connecting seat is arranged at the bottom in the box body, a mounting plate is arranged at the middle upper part of the box body, and a vertical guide rail column is detachably mounted between the connecting seat and the mounting plate; clamping structures are arranged at the upper and lower ends of the base; and copper wires are detachably mounted on the clamping structures. And two ends of the electromagnetic heating coil penetrate out of the box body and are connected with an induction heating power supply. And the top of the base is connected with the take-up and pay-off equipment through a stay wire. Two temperature measuring assemblies are arranged on the box wall and located above and below the electromagnetic heating coil respectively. The lower end of the side wall of the box body is connected with an inert gas supply source, and the upper end is provided with an exhaust pipe with a valve and an online gas detector. The side wall of the box body is connected with an inclined bent pipe and an emptying pipe with a valve, and a water inlet pipe penetrates through the side wall of the box body and is connected with the box body.
Owner:HAINAN MEIYA COPPER TECHNOLOGY CO LTD

Inductive heating for cold weather charging

An inductive heater assembly for heating a power tool battery pack, the inductive heater assembly comprising a housing, a battery pack interface configured to receive the power tool battery pack, a charging base, a coil portion located within the housing. The coil portion including a first coil winding and a second coil winding configured to generate an electromagnetic field, wherein the first coil winding and the second coil winding to form a Helmholtz coil.
Owner:MILWAUKEE ELECTRIC TOOL CORP

Turbine guide vane thermal fatigue testing device

The invention discloses a thermal fatigue testing device for a turbine guide vane. The thermal fatigue testing device comprises a base; the heating module comprises a profiling wire of which the shape is matched with the cross section of the to-be-tested piece and a power supply for driving the profiling wire to generate an induction heating magnetic field through alternating current; the axis height of the annular track is aligned with that of the profiling wire, and the annular track surrounds the periphery of the profiling wire; at least one independent temperature control module, each independent temperature control module is movably arranged on the annular track, and the local temperature of the to-be-tested piece is controlled by adjusting the magnetic field intensity of the corresponding section on the profiling wire through magnetic shielding; and at least one temperature detection module, wherein each temperature detection module is used for collecting temperature distribution data in real time. Through multi-area independent temperature control, non-uniform temperature gradient loading of the front edge area, the middle section area and the tail edge area of the turbine guide blade is achieved, and the thermal stress field of the blade under the real engine working condition is accurately simulated.
Owner:SHENYANG AEROSPACE UNIVERSITY

Aluminum magnesium alloy energy-saving melting device and method based on electromagnetic induction preheating

The invention discloses an aluminum magnesium alloy energy-saving melting device and method based on electromagnetic induction preheating, and belongs to the technical field of aluminum magnesium alloy preparation. The device comprises a preheating curve generation module used for determining a preheating curve based on the weight of an electromagnetic preheating station and the position of a magnesium ingot; the preheating module is used for controlling an induction heating device to carry out electromagnetic preheating on the magnesium ingot based on the preheating curve; the feeding module is used for calculating the clamping force and the acceleration of the manipulator for grabbing the magnesium ingot and the feeding angle after the manipulator reaches the target position, and controlling the manipulator to feed the magnesium ingot into the crucible based on the parameters; the air supply adjusting module is used for adjusting the air supply amount of the variable-frequency fan; and the heating control module is used for controlling the heating process of the heating device to the outside of the crucible. According to the scheme, the heating time can be shortened through electromagnetic preheating, the heat loss is reduced, and the overall energy consumption can be reduced and the melting efficiency and the alloy quality can be improved by combining real-time temperature field monitoring and molten pool recognition.
Owner:TIANJIN LIUHE MAGNESIUM PROD