1668 results about "Induction coil" patented technology

The invention discloses a method for dynamically monitoring and automatically processing abnormity of an entrance and an exit of a parking lot, relates to the technical field of intelligent parking lot management, and aims to solve the problems that existing unattended parking lot entrance and exit management depends on manpower, abnormity processing is passive, and the misjudgment rate is high. The method is based on an information acquisition and execution layer-edge processing layer-cloud platform three-layer architecture, the core realizes high-precision scene understanding through a multi-algorithm fused visual perception module, multi-modal data weighted fusion is combined with a ground induction coil, a radar and the like, and the misjudgment rate is reduced; a sensing result is converted into an automatic processing action through a configurable intelligent rule engine; and meanwhile, the cloud platform stores passing data and an evidence chain, optimizes an AI model through incremental training and returns the AI model to an edge layer, so that closed-loop evolution is realized.

The invention provides a semi-aviation transient electromagnetic acquisition device and method for calibrating data drift in real time, and relates to the technical field of data calibration, and the device comprises an electromagnetic data acquisition unit which receives a secondary induction signal generated by a ground transmitting end through a transient electromagnetic hollow induction coil disposed in a coil storage cabin of an unmanned aerial vehicle, and transmits the secondary induction signal to an unmanned aerial vehicle; self-adaptive gain control is carried out according to the signal intensity to obtain real-time electromagnetic data; the flight control unit monitors the swing amplitude and frequency of the coil in real time according to the inclination angle and acceleration data fed back by the sensor in the coil storage cabin, and carries out flight attitude adjustment and control; the drift calibration unit adopts a static reference mode for calibration at the beginning stage of flight; and switching to a dynamic reference mode in the flight process, and carrying out self-adaptive calibration on the real-time data stream based on a sliding window. According to the invention, drift calibration of traditional software post-processing is migrated to a hardware acquisition stage, so that synchronous completion of data acquisition and drift compensation is realized.

The invention relates to the field of electromagnetic nondestructive testing, in particular to a curved surface self-adaptive eddy current testing probe, a nondestructive flaw detector and a testing method. The eddy current detection probe comprises a magnetic core bundle, an excitation coil and an induction coil. Wherein the magnetic core bundle is formed by densely arranging a plurality of ferromagnetic magnetic needles; and the excitation coil and the induction coil radially limit the magnetic core bundle. The excitation coil is wound on one end of the magnetic core bundle away from the detection surface and is used for connecting an adjustable power supply. The exciting coil generates an alternating magnetic field for detection in a target area by using the adjustable power supply, and magnetizes the magnetic core bundle by using the adjustable power supply, so that the detection surface of the eddy current detection probe is tightly adsorbed with the target area on the surface of a detected object. And the induction coil is wound at one end, close to the detection surface, in the magnetic core bundle and is used for inducing a signal generated by a detected object in the detection process. According to the invention, the problem that the existing electromagnetic nondestructive testing probe cannot be attached to various complex curved surfaces to cause signal attenuation and influence the measurement precision is solved.

The invention relates to the technical field of wafer processing, in particular to a reaction chamber and plasma processing equipment, which comprises a quartz tube, an induction coil, a Faraday shield cage, a state monitoring device, a rotation driving device and a control unit, and is characterized in that the quartz tube is arranged at the top of a processing chamber; the induction coil is arranged around the outer side of the quartz tube; the Faraday shielding cage is provided with a slit, and the orthographic projection of the slit on the circumferential wall of the quartz tube forms an erosion area; the state monitoring device is used for monitoring the erosion area; the driving end of the rotary driving device is connected with the quartz tube or the Faraday shielding cage; the control unit is in communication connection with the state monitoring device and the rotary driving device; according to the invention, through real-time monitoring and an active regulation and control mechanism, the problem of concentrated erosion of plasma to the quartz tube in a high-hydrogen process is effectively solved.

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 relates to the technical field of wafer processing equipment, in particular to a reaction cavity and plasma processing equipment, comprising a quartz tube, an induction coil and a shielding member, the quartz tube is arranged at the top of a processing chamber; the induction coil is arranged on the outer side of the quartz tube in a surrounding manner and comprises a plurality of annular sections which are arranged at intervals in the axial direction of the quartz tube and a plurality of connecting sections which are arranged between every two adjacent annular sections and are used for connecting every two adjacent annular sections; the shielding component is annularly arranged between the quartz tube and the induction coil and comprises a plurality of annular shielding parts arranged in the axial direction of the quartz tube and a plurality of arc-shaped shielding parts arranged between every two adjacent annular shielding parts and used for connecting every two adjacent annular shielding parts; a slit is formed between two adjacent annular shielding parts; concentrated bombardment of high-energy ions on the inner wall of the quartz tube can be obviously prevented, so that erosion of the quartz tube is effectively reduced, particulate matter is reduced, the service life of a machine is prolonged, and the process yield is increased.

The invention provides an infrared pulse thermal radiation grinding burn nondestructive testing method and system, and belongs to the technical field of nondestructive testing. Comprising the following steps: inputting an excitation signal to an induction coil, and inducing a pulsed eddy current in a tested part for heating; a thermal infrared imager and a depth camera are used for obtaining a thermal response temperature matrix of a measured area of the part and a three-dimensional point cloud of the measured area; then, constructing a thermal response model of the part; extracting a time sequence temperature curve of the heating stage and the natural cooling stage of the detected area, and establishing a grinding burn discrimination function to judge whether a grinding burn area exists or not; and the thermal infrared imager and the depth camera are calibrated, the grinding burn area under the coordinate system of the thermal infrared imager is projected into the three-dimensional point cloud of the depth camera, the position of the grinding burn area under the world coordinate system is obtained, and detection and positioning of the grinding burn area are achieved.

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 relates to the technical field of automatic welding, and discloses a micro welding seam tracking method and system based on electromagnetic induction. According to the method, a high-frequency alternating magnetic field is applied to a welding seam area through an exciting coil in the micro electromagnetic sensing core; an induction coil in the electromagnetic sensing core is used for detecting magnetic field disturbance caused by geometric shape changes of the weld groove, and induction signals are obtained; processing the induction signal through a signal processing circuit integrated in the probe, namely converting the impedance change of the coil into a voltage signal, demodulating and filtering the voltage signal, and extracting a direct-current voltage signal corresponding to the deviation of the probe relative to the central position of the welding seam; the direct-current voltage signals serve as position feedback information to be output to a welding robot control system; and the movement track of the welding robot is adjusted in real time according to the position feedback information, and welding seam tracking and path deviation correction are achieved.

The invention discloses reservoir underground pore connectivity transformation simulation equipment, a reservoir underground pore connectivity transformation simulation system and an evaluation method. The equipment comprises a rock core transformation clamping device, a first magnet, a second magnet, a nuclear magnetic resonance signal controller, a storage and collection tank and a fluid displacement device, wherein a magnetic induction coil is arranged in the rock core transformation clamping device, and the first magnet and the second magnet are oppositely arranged on the two sides of the rock core transformation clamping device; the nuclear magnetic resonance signal controller is electrically connected with the first magnet, the second magnet and the magnetic induction coil respectively and is used for controlling the magnetic field intensity formed by the first magnet, the second magnet and the magnetic induction coil and measuring a nuclear magnetic signal of a rock core sample in the rock core transformation clamping device; the rock core modification clamping device comprises a fluid inlet, the fluid inlet is communicated with the storage and collection tank, and the fluid displacement device is connected with the storage and collection tank, so that fluid is displaced into the rock core modification clamping device under the action of the fluid displacement device, and modification and evaluation on the pore connectivity of the rock core sample under different fluid pressures are realized.

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.

The invention belongs to the technical field of seeding, and particularly relates to an intelligent precision seed-metering device based on electromagnetic control and a seed-metering method, and the seed-metering device comprises a seed-metering disc assembly and an electromagnetic intelligent seed pushing assembly. The seed metering plate assembly is provided with a seed hole with an annular permanent magnet; the electromagnetic intelligent seed pushing assembly comprises a control module, an electrified solenoid and a flexible seed pushing assembly with a permanent magnet sliding block and a flexible pushing disc. During working, the magnetic attraction force between the seed-metering disc permanent magnet and the sliding block permanent magnet is combined with the controllable electromagnetic force generated by the electrified solenoid to cooperatively drive the sliding block to complete the seed pushing action. The electric signals are controlled through programming, and various operation modes such as ultra-high speed, precision low loss and variable jump broadcast can be switched in real time. According to the invention, the embedded real-time monitoring and fault diagnosis of the seed pushing action are realized by using an electric signal generated by the movement of the sliding block in the induction coil. According to the invention, the problem that the existing seed-metering device is difficult to consider high-speed, low-loss and multi-mode operation and intelligent monitoring at the same time is solved.

The invention relates to the technical field of impurity removal and purification, in particular to a high-temperature impurity removal and purification method for a graphite material. Obtaining the furnace temperature and the output power at each moment in each monitoring period in each high-temperature purification process and the temperature and the voltage of each induction coil at each moment; calculating a first evaluation value, a power fluctuation degree, a second evaluation value and an evaluation coefficient of each monitoring period; determining the bridging confidence coefficient of each monitoring period in each high-temperature purification process; and the bridging phenomenon occurring in each monitoring period in the high-temperature purification process is evaluated, and the bridging phenomenon existing in the high-temperature purification furnace is eliminated, so that the graphite material is subjected to high-temperature purification. According to the method, the bridging phenomenon in the high-temperature purification furnace can be accurately evaluated, and stable operation of a high-temperature purification process and high-quality purification of a graphite material are ensured.

A tamper for making paraffin blocks for histology may include a pliable tamper head and a handle. The handle may be permanently or removably attached to the tamper by using screws, magnets, or the like. The tamper may be made from a pliable material, such as a silicone rubber, with improved thermal transfer and high latent heat. In use, the tamper may be warmed in advance to a working temperature by placing the tamper on a hot plate of the embedding station or on a dedicated smaller hot plate. Alternatively, the tamper may be heated with an electric resistive element, a thermoelectric device, or an electric induction coil.

The invention relates to the related technical field of geophysical exploration instruments, in particular to a miniaturized broadband induction type magnetic field sensor. The sensor comprises a magnetic core, an induction coil, a feedback coil and a signal processing circuit. The invention is characterized in that the magnetic core is of a long rod-shaped structure formed by laminating and curing high-permeability soft magnetic strip materials, the length of the magnetic core is 580mm-640mm, the cross section of the magnetic core is a square or an equivalent circle with the side length of 11mm-15mm, and the length-diameter ratio of the magnetic core is greater than 40; the feedback coil is formed by spirally winding a metal foil belt along the magnetic core, and the metal foil belt forms a main shielding layer for restraining interference of an external electric field at the same time. By optimizing the size and the length-diameter ratio of the magnetic core and combining the integrated design of feedback and shielding functions, while the working frequency band and the low-noise performance are ensured, remarkable miniaturization and light weight of the sensor are realized, and the portability and the layout efficiency of field exploration are greatly improved.

An induction circuit includes a first induction coil, at least one second induction coil, and switching circuitry including a shared half-bridge inverter, a first half-bridge inverter cooperating with the shared half-bridge inverter to control current through the first induction coil, at least one second half-bridge inverter cooperating with the shared half-bridge inverter to control current through the at least one second induction coil, and a first auxiliary switch in series with the first induction coil for selectively electrically coupling and electrically decoupling the first induction coil with at least one of the shared half-bridge inverter and the first half-bridge inverter.

The invention discloses an electromagnetic and hydraulic combined bulging and correcting method for a pipe plate. The method comprises the steps of 1, feeding treatment, 2, electromagnetic pre-activation treatment, 3, hydraulic precise bulging treatment, 4, pressure maintaining and shaping treatment, 5, electromagnetic and hydraulic collaborative correcting treatment and 6, material taking and post-treatment. The device comprises a machine frame which is vertically symmetrical and provided with a forming lower die and an opening and closing upper die through a hydraulic oil cylinder, a temperature sensor and a strain gauge are embedded in the lower side in a die cavity, high-frequency induction coils are arranged on the outer surfaces of the forming lower die and the opening and closing upper die, and a pulsed magnetic field generator is embedded in the top in the opening and closing upper die. A liquid injection opening is formed in the side edge of the upper opening and closing mold and is connected with a high-pressure oil pump through a pipeline; a main controller is further arranged on the rack; through a staged coupling process, the deformation resistance during bulging is reduced, elastic recovery is eliminated through cooperative shape correction, meanwhile, the device integrates multiple modules, real-time matching of electromagnetic parameters and hydraulic pressure is achieved, and the device adapts to forming of pipe plates made of different materials and in complex shapes.

The utility model relates to the technical field of metallurgical electric furnaces, in particular to an induction coil for a medium-frequency electric furnace, which comprises an induction heating coil, an upper cooling coil positioned above the induction heating coil and a lower cooling coil positioned below the induction heating coil, the upper cooling coil, the induction heating coil and the lower cooling coil are all formed by winding hollow pipe bodies in the same spiral direction, the cross section of the induction heating coil is in a D shape, and the induction heating coil comprises an inner pipe wall, an outer pipe wall and two connecting walls connected between the inner pipe wall and the outer pipe wall. The cross section of the induction heating coil is designed to be D-shaped, the inner pipe wall located on the inner side of the induction heating coil is arranged to be arc-shaped, and the outer pipe wall located on the outer side of the induction heating coil extends in the vertical direction, so that current and magnetic field distribution is optimized, and magnetic field energy acts on the surface of a workpiece on the inner side of the induction heating coil more intensively; energy loss is reduced, the heating speed of workpieces is increased, and the heating efficiency of the medium-frequency electric furnace is improved.

The high-frequency welding machine workbench comprises a rack, a liquid storage tank is arranged on the rack, a liquid storage tank is arranged in the liquid storage tank, the top of the liquid storage tank is open, elastic clamping assemblies are arranged in the liquid storage tank, and the two elastic clamping assemblies distributed oppositely are used for clamping a heat exchanger shell; and the infusion pump is connected with the water tank and the liquid storage tank. The water cooling device is novel in structure, good in water cooling effect, economical and practical, the induction coil is not prone to being burnt, and welding quality of finished products is improved.

A method and system for manufacturing containers are disclosed. The system includes one or more manufacturing cells comprised of an unloading station, a queuing / sequencing station, a heating station, an unloading station, and a molding station. The queuing / sequencing station utilizes a plurality of carrier shuttles configured to traverse a platform comprised of a plurality of induction coil sections. Each of the carrier shuttles is provided with a preform mount for receiving a preform thereon. The preforms are selected and the carrier shuttles are arranged in accordance with a predetermined sequence. At least one heater of the heating station is disposed over one of the induction coil sections and adapted to heat the preform. The heated preforms are transported by the carrier shuttles from the heating station to an unloading station, which transitions them to the molding station for a fluid (e.g., gas or liquid) blow molding operation to form the containers.

To provide a wireless power transmission device, a wireless power receiving device, and a wireless power supply system that have simple and lightweight configurations capable of being highly effective in reducing leakage magnetic fields, even at locations far from a power transmitting coil and a power receiving coil.SOLUTION: A wireless power transmission device that transmits power contactlessly includes: a power transmitting coil that transmits power; a driving induction coil provided around the power transmitting coil; and a canceling magnetic field generating coil connected in series to at least a portion of the driving induction coil so as to surround at least a portion of the power transmitting coil, in which a leakage magnetic field canceling coil is formed by the driving induction coil and the canceling magnetic field generating coil.SELECTED DRAWING: Figure 1

The invention discloses a device and a method for inhibiting crucible oxidation and raw material decomposition in gallium oxide single crystal growth, the device comprises a furnace body, an iraurita crucible, a thermal insulation layer, an induction coil, a lifting mechanism and the like, a temperature dynamic regulation and control system is arranged between the iraurita crucible and the thermal insulation layer; the temperature dynamic regulation and control system is used for monitoring the temperature distribution of the iridium crucible and the inner cavity in real time and regulating the heating frequency of the induction coil through feedback temperature; a melt decomposition monitoring system is arranged in the inner cavity close to the iraurita crucible and is used for detecting the gallium atom concentration and oxygen partial pressure change in the inner cavity in real time; and an atmosphere active adjusting system is also arranged in the furnace body. According to the device, the gallium oxide single crystal can be obtained, and the problems of crucible oxidation, melt decomposition and unstable crystal quality caused by a high-temperature environment can be solved; through dynamic monitoring and regulation, the oxidation and corrosion loss of the iraurita crucible is reduced, and meanwhile, the large-size and high-quality beta-Ga2O3 single crystal is obtained.

The invention relates to the technical field of medium-frequency induction heating furnaces, in particular to a medium-frequency induction heating furnace body, a furnace body manufacturing method anda temperature control method. The medium-frequency induction heating furnace body comprises a furnace lining, a material channel allowing a blank to pass through is formed in the middle of the furnace lining, and an induction coil which extends in axial direction of the material channel and is spirally wound on outer side of the material channel is arranged in the furnace lining; and a pluralityof temperature measuring holes are formed in the side wall of the furnace lining in the axial direction of the furnace lining at intervals, the temperature measuring holes are formed in the radial direction of the furnace lining and penetrate through the side wall of the furnace lining, and the temperature measuring holes are located at the intervals between every two adjacent turns of coils of the induction coil. The invention further provides a manufacturing method of the medium-frequency induction heating furnace body and a temperature control method of the medium-frequency induction heating furnace. According to the furnace body, the temperature measuring holes are formed in the side wall of the furnace body for temperature measurement instead of adopting the temperature measurement mode at a discharge port so that the temperature measurement accuracy can be improved.

The utility model belongs to the technical field of quenching inductors, and particularly relates to a quenching inductor for a crossed roller bearing outer sleeve, which comprises an induction coil, a magnetizer is fixedly arranged on the inner side of the top end of the induction coil, and connecting plates are fixedly arranged on the left side and the right side of the bottom end of the induction coil. According to the utility model, through the process separation of'overall heating and overall cooling ', the defect of a soft belt caused by time and space asynchronism of a heating area and a cooling area in the traditional continuous quenching process is fundamentally avoided, the absolute uniformity of the hardness and the structure in the circumferential direction of the bearing sleeve raceway is realized, no weak link exists, and the service life of the bearing sleeve raceway is prolonged. Due to the fact that the whole roller path is heated and cooled at a time, a starting point and ending point overlapping process adopted for eliminating an axial soft belt is completely avoided, the risk of cracking caused by local secondary heating and quenching is thoroughly eliminated, the service life of the crossed roller bearing under the heavy-load and high-precision working conditions is prolonged in a multiplied mode, and the equipment maintenance cost is reduced.

The invention relates to the technical field of neodymium iron boron sintering equipment, and discloses neodymium iron boron sintering temperature control equipment which comprises a furnace body and a vacuum system, the furnace body is sequentially provided with a degreasing area, a sintering area and a tempering area which are physically separated in the material conveying direction, and double-open heat insulation doors are installed between the areas; an induction coil heating assembly is installed in the sintering area, and a partition type resistance heating assembly is embedded in the side wall of the hearth in the circumferential direction. According to the neodymium iron boron sintering temperature control equipment, the partition type resistance heating assembly comprises a plurality of independent heating units, the heating units are distributed along the circumference of the hearth wall of the furnace body in an array mode, the independently-controlled heating units are distributed in a circumferential array mode, accurate temperature control can be conducted on different areas of the hearth, and the temperature control efficiency is improved. When the laser thermodetector detects that the temperature of a certain area is low, the control system can independently increase the heating power of the corresponding heating unit, and the temperature uniformity of the whole sintering area is ensured.

The invention belongs to the field of high-purity indium preparation, and provides a method for preparing high-purity indium based on ultrasonic vacuum distillation-electromagnetic pulse zone melting purification, the method combines vacuum distillation and zone melting purification technologies, ultrasonic waves are applied in the vacuum distillation process to assist in removing low-boiling-point impurities such as Cd, Zn and the like, and the purity of the high-purity indium is improved. In the zone melting process, pulse current is applied through an induction coil to assist in removing impurities mainly including Sn, Pb and Fe, and stable preparation of a high-purity indium product with the purity larger than or equal to 99.9995% and the oxygen content smaller than or equal to 2 ppm is achieved by screening and controlling technological conditions. According to the method, the requirement for the purity of the raw material indium is low, and the preparation cost of a high-purity indium product can be reduced.

The application discloses a millimeter-level precise point locking and hanging plate system and method, and belongs to the technical field of equipment safety. The millimeter-level precise point locking and hanging plate system comprises a lock, an RFID identifier is arranged on the lock, the identification coil of the RFID identifier is concentric with the lock hole of the lock, and the identification distance of the RFID identifier is 3mm-5mm; an RFID tag is arranged on the bottom shell of an equipment point, and the induction coil of the RFID tag is concentric with the ear hole of the bottom shell; wherein the lock performs a locking action in response to a detected locking operation when the RFID identifier identifies a target RFID tag. The application can effectively avoid the problem of incorrect equipment point locking and hanging plate when the equipment points are dense, effectively improve the locking and hanging plate operation quality by technical means, and reduce the accident probability.

A lock system includes a lock. The lock includes a locking mechanism, an induction coil, and an actuator. The locking mechanism is selectively movable between a first position and a second position. The induction coil is configured to inductively couple with a portable device to generate power. The actuator is configured to actuate between a locked configuration and an unlocked configuration to selectively transition the locking mechanism between a locked state and an unlocked state in response to receiving the power generated with the induction coil.

The invention relates to a heat treatment process of a bearing ring with high impact resistance, which comprises the following steps: step 1, pretreatment: quenching and tempering the bearing ring by adopting a mesh belt type heat treatment furnace, and carrying out quenching in five regions in sections; 2, medium-frequency heat treatment: 1) an induction heating process: heating in an inner induction coil oscillation mode; and (3) the bearing ring in the step (2) is overturned by 180 degrees and then placed into the induction heating device again, the step (1) and the step (2) are repeated, and the method is completed. The method has the advantages that the depth of the induction quenching layer of the ferrule is optimized, an effective gradient buffer area is ensured to be formed, and the stress distribution uniformity under the impact load is enhanced; surface layer hardness, secondary surface layer hardness distribution and core hardness distribution are optimized, and wear resistance and crack resistance are both considered; a set of standardized heat treatment parameter windows (including heating power, time, cooling mode and tempering system) is formed, and the fracture rate of an optimized sample piece is reduced by more than 50%.

A steel pipe quenching device for a crane boom relates to the technical field of quenching devices and comprises a base, a U-shaped support and a U-shaped seat are fixedly arranged at the top of the base, a lifting plate and a supporting plate are vertically arranged on the inner wall of the U-shaped support in a sliding mode, the supporting plate is fixedly arranged on the inner wall of the U-shaped support, and a plurality of supporting rods are fixedly arranged on the top of the supporting plate and the bottom of the lifting plate in the circumferential direction. A sliding plate is vertically arranged in the U-shaped seat in a sliding mode, an induction coil and a cooling ring which are fixedly arranged are vertically arranged at the end of the sliding plate, the induction coil is electrically connected with an external power source, a cooling column which moves synchronously with the cooling ring is arranged in the cooling ring, and an outer water passing groove and an inner water passing groove are correspondingly formed in the inner wall of the cooling ring and the outer wall of the cooling column. A plurality of annular labyrinth grooves are formed in the positions, located on the upper and lower sides of the outer water through groove, of the inner wall of the cooling ring and the positions, located on the upper and lower sides of the inner water through groove, of the outer wall of the cooling column. The steel pipe quenching device solves the problem that an existing steel pipe quenching device overcools a steel pipe when quenching the steel pipe; and cooling of the steel pipe is not uniform.