20 results about "Differential heating" patented technology

The invention provides a hardware tableware punch forming device and a machining process. The hardware tableware punch forming device comprises a punching table, a lower die, an upper die, an area detection module, a temperature adjusting module and a control module. Wherein the area detection module is used for detecting the cross sectional area of the root of each fork tooth area in the table fork; the control module calculates the stamping temperature required by each prong area according to the data of the cross sectional area of the root of each prong area, and controls the temperature adjusting module to heat according to the stamping temperature corresponding to each prong area, the stamping temperature corresponding to the prong area with the smaller cross sectional area is higher than that corresponding to the prong area with the larger cross sectional area; therefore, by obtaining the cross sectional area of the root of each prong area and combining the temperature calculation logic of the control module, differential heating of the prong areas is achieved, the plastic deformation capacity of the prong areas is improved, and the springback amount is reduced, so that the springback difference of different areas is balanced, the coplanarity of the prongs is guaranteed, the forming precision is improved, and the machining quality is improved.

The invention belongs to the technical field of material processing and welding, and provides an electron beam welding method for a fragile material, which comprises the following steps of: dividing a first stress regulation and control area covering a welding joint and a second stress regulation and control area positioned on the outer side of the first stress regulation and control area on a to-be-welded workpiece; differential heating is conducted on the two areas, so that the heating temperature of the second area is higher than that of the first area; based on the heating temperature of the first stress regulation and control area, welding parameters are determined by adopting a method of combining parameter calculation and test welding verification; welding operation is conducted in a dynamic beam adjusting mode according to the welding parameters; and performing scanning heating on a welding seam area after welding to realize cold treatment. According to the method, welding cracks of the fragile material are fundamentally restrained through an active stress regulation and control mechanism, meanwhile, the preheating process is optimized, assembly deformation caused by overall high temperature is avoided, and high-quality and high-efficiency welding is achieved in combination with a welding parameter confirmation and forming control method.

The invention discloses an everting 5D seamless process for a rear shoe cover, which relates to the technical field of shoemaking processes, and comprises the following steps: providing a specially-made rear shoe cover blank of which the predetermined everting area is a composite material layer with continuously gradually changed modulus from inside to outside; performing three-dimensional partitioning and differential energy input on the eversion region; a global controllable non-contact forming force field is established around the softened blank; the air pressure vector of each action point in the force field is calculated and dynamically regulated in real time; programmed cooling cooperating with the characteristics of the phase-change material is carried out on the formed body, and a shoe rear cover finished product is obtained. According to the method, the composite material with the modulus changing in a gradient mode is adopted, partition differential heating is combined with non-contact type laminar flow air pressure field driving, high-precision and damage-free three-dimensional forming of the eversion area of the rear shoe cover is achieved, and the excellent size stability and shape retentivity of a product are guaranteed; and an advanced manufacturing solution with high flexibility, digitization and extremely high consistency is provided for the shoemaking industry.

The invention discloses a method for preventing and controlling forging cracks of shaft forgings, belongs to the technical field of forging of the shaft forgings, and aims to solve the technical problem that the forging cracks of the shaft forgings cannot be effectively prevented and controlled in the prior art. The shaft forge piece forging crack prevention and control method comprises the following steps that 1, a heating system before forging is optimized, specifically, 11, the surface temperature of a steel ingot is detected, and differential heating is conducted; 12, the material waiting time is controlled; step 13, carrying out rigid limitation on the turning down times; in the whole forging process period of the blank, the turning-down frequency is strictly limited to be smaller than or equal to 2 times; 2, cogging and pre-drawing out the steel ingot; the method comprises the following steps: heating a steel ingot to 1240-1260 DEG C, discharging the steel ingot from a furnace, and carrying out cogging and pre-drawing on the steel ingot; 3, upsetting and KD drawing are sequentially carried out after cogging and pre-drawing; step 4, limiting transfer time control; and the transfer time is controlled to be 1-3 hours. The method can effectively relieve the occurrence frequency of forging cracks, improve the production efficiency and reduce the forging period and the production cost.

The invention relates to an ion irradiation device and method under temperature gradient and application, the device comprises an ion accelerator system, an irradiation terminal vacuum target chamber and a temperature difference heating table arranged in the target chamber, a sample is fixed on the temperature difference heating table, and the temperature difference heating table provides a stable temperature gradient environment for the sample. The ion accelerator system provides ion beams with energy and types required by irradiation, and the irradiation terminal vacuum target chamber provides a vacuum environment required by an experiment. The temperature difference heating table is designed and mounted at the irradiation terminal of the ion accelerator system, so that ion irradiation of a sample under the condition of controlled temperature gradient is realized. By accurately reproducing the temperature distribution environment when the metal fuel serves in the reactor outside the reactor and carrying out ion irradiation, the method can simulate the irradiation behavior of the fuel under the actual working condition, so that important scientific research problems such as fuel element migration, fission product distribution and irradiation swelling are researched.

The application discloses a dynamic adjustable in-situ heat conduction type contaminated soil electric heating device and method, which comprises a power supply system arranged above the ground and a heating system penetrating into the ground. The heating system comprises a heating well and a heating assembly arranged in the heating well. The heating assembly comprises a fixed conductive connecting rod connected with positive and negative poles of the ground power supply cable respectively, a sliding conductive connecting rod and a spiral coil heating resistor surrounding the fixed conductive connecting rod. The spiral coil heating resistor is connected with the lower end of the fixed conductive connecting rod. The sliding conductive connecting rod can slide up and down and is connected with the spiral coil heating resistor through a conductive switch piece, so that the differential heating of the soil at different depths is realized. The application can realize the differential heating of the contaminated soil, that is, the required heating time gradually increases from top to bottom, is beneficial to the implementation of the precise depth heating, can effectively save the energy and reduce the carbon emission under the premise of ensuring the heating effect, and is convenient to operate.

The utility model discloses a kind of double-side difference heating box for parallel type high elastic fiber production, including box body, heat insulation plate is transversely arranged in the middle of box body, the heat insulation plate separates the first cavity and second cavity in box body, first conveying roller, first tension roller, second tension roller, third tension roller and second conveying roller are sequentially arranged in the first cavity from left to right, the height of second tension roller is higher than the height of first conveying roller, the height of first tension roller and third tension roller are all lower than the height of first conveying roller, first blowing mechanism is equipped above first tension roller, second blowing mechanism is equipped below second tension roller.The utility model of double-side difference heating box for parallel type high elastic fiber production is designed by optimizing box body, heat insulation plate, conveying roller, tension roller, blowing mechanism, flattening roller group and drying mechanism, realizes two different heating temperatures.

To provide optimized water channels and flexible coolers for use in heat exchange modules, systems, and methods thereof. [Solution] An optimized fluid channel, a flexible thermoelectric cooler ("TEC"), and a fixed-frame therapy station are disclosed herein, along with a method for fabricating them. As a result, the optimized fluid channel provides an improved HEM, thereby the fluid seal is more secure and the fabrication is easier to complete. Furthermore, the flexible TEC provides the end user with a more conformal design and enables more concentrated and efficient heat transfer. Finally, the fixed-frame therapy station provides a fixed frame, which enables differential heating and cooling on a human hairless skin area and provides additional benefits during heating and cooling therapy procedures.

The invention provides a method for improving the nutrient density of sweet potato granules through low-temperature vacuum frying, and belongs to the technical field of food processing. Accurate temperature control is realized by establishing a sweet potato granule temperature gradient mathematical model and adopting a segmented temperature rise control strategy; uniform moisture migration is promoted by combining periodic vacuum degree adjustment of a pulse vacuum technology and the synergistic effect of a 40kHz ultrasonic-assisted mass transfer system, and an upper layer model with maximum temperature uniformity and a lower layer model with maximum moisture migration rate are established through a double-layer game optimization model to realize multi-target collaborative optimization. An infrared temperature monitoring system is used for monitoring a temperature uniformity evaluation index in real time and dynamically adjusting differential heating power distribution, and finally, an infrared thermal imager is used for monitoring the surface temperature stability to ensure the machining quality. The technical problem that in the low-temperature vacuum frying process of sweet potato granules, internal and external temperature distribution is not uniform, and consequently nutrient loss is serious is solved.

The invention relates to the technical field of neodymium-iron-boron magnet production, in particular to a control method for inhibiting cracking of a large sintered neodymium-iron-boron permanent magnet. According to the method, by means of the multi-stage differential heating rate design and the combination of control over the temperature interval of each stage, uniform growth of magnet grains, effective release of internal stress and sufficient discharge of volatile matter are achieved, the cracking risk of a blank with the unit weight larger than 1 kg is restrained, and the structural stability of the magnet is remarkably improved.

A coated glazing for a vehicle includes a first glass substrate and a heatable coating formed on the first glass substrate, the heatable coating including a partially removed portion having a thickness that is thinner than an unremoved portion of the heatable coating. The partially removed portion of the heatable coating is formed in a differential heating zone for variably heating the first glass substrate for de-icing a wiper park area or any other heating desired area.

The invention discloses a temperature control method and device, computer equipment and a readable storage medium. The method comprises the steps that the current temperature and the target temperature of each heating unit are acquired; based on the temperature difference value between the current temperature and the target temperature of each heating unit, the temperature difference value proportion, the heating power and the heating sequence of each heating unit are determined; based on the temperature difference ratio of each heating unit, determining the heating duration of each heating unit in the current heating period; and under the constraint of the total power of the power driving module, based on the heating power and the heating duration, the power driving module is controlled to sequentially output control signals to all the heating units according to the heating sequence in the current heating period, so that all the heating units are sequentially heated in different time periods of the current heating period. The temperature difference value proportion, the heating power and the heating duration are dynamically determined through the temperature difference value, time-sharing differential heating control of the heating device under the condition that the total power is limited is achieved, and the temperature control precision and the overall energy consumption can be both considered.

The invention relates to the technical field of pipe fitting hot forming defect control, and discloses a P92 pipe fitting hot pushing forming defect control method and system.The P92 pipe fitting hot pushing forming defect control method comprises the following steps that a differential heating array is started, a pipe blank is heated and austenitized, and a material is converted into a paramagnetic state; driving a multi-frequency eddy current probe, simultaneously transmitting high and low frequency signals, and collecting complex impedance signals; carrying out impedance normalization, inverting the wall thickness at low frequency, and calculating a surface rheological damage factor at high frequency; the wall thickness deviation is compared, the heating power is dynamically adjusted, and an anisotropic deformation resistance field is constructed; monitoring a damage factor, triggering a pulse when the damage factor exceeds a threshold value, and reducing the surface layer strength through electroplasticity; and the steps are repeatedly executed till pushing forming of the pipe fitting is completed. A multi-frequency eddy current chromatography detection technology is adopted, the difference of penetration depths of electromagnetic waves with different frequencies in a conducting medium is utilized, a low-frequency signal penetrates through the full thickness of a tube wall to invert the geometric dimension, and a high-frequency signal is limited by a skin effect and only reflects surface layer conductivity fluctuation.

The invention provides a titanium plate heating process, and relates to the technical field of titanium plate treatment, and the titanium plate heating process comprises the following steps: S1, a titanium plate pretreatment stage: removing impurities on the surface of a titanium plate by adopting chemical cleaning and mechanical polishing before heating, and coating an anti-oxidation coating; s2, a composite heating stage, wherein an induction heater is used for integrally preheating the titanium plate, and meanwhile, a laser heater is used for accurately heating a specific area; s3, an intelligent temperature control stage; and S4, a heating post-treatment and detection stage. According to the titanium plate heating process, through combination of induction heating and laser heating, local and overall cooperative temperature control of the titanium plate is achieved, differential heating can be conducted on different areas on the titanium plate through accurate temperature control of a laser heater, temperature distribution is monitored in real time in cooperation with a temperature sensor, and heating parameters are dynamically adjusted; and uniform temperature distribution of the titanium plate in the heating process is further ensured, and the phenomenon of overheating or underheating is avoided, so that the risk of deformation and inconsistent performance is reduced.

A coated glazing useful for vehicles includes a first glass substrate, and a heatable coating formed on the first glass substrate, the heatable coating including at least one heatable layer, at least one dielectric layer, and at least one integrated portion of a heatable layer and a dielectric layer, wherein the integrated portion is formed in a differential heating area of the heatable coating, for variably heating the first glass substrate for deicing wiper park areas or any other heating desirable areas.

The invention discloses a high-speed thermal fatigue comprehensive test device and method for an automobile clutch assembly, and relates to the field of clutch fatigue tests.The high-speed thermal fatigue comprehensive test device comprises a test rack which comprises two rack plates, and a test area is formed between the two rack plates; the high-speed rotation driving unit is slidably arranged on one side of the test area; the clutch assembly is supported on the test rack through a mounting assembly, and the output end of the high-speed rotation driving unit is connected with one end of the clutch assembly through a connecting shaft; the thermal load simulation unit is provided with a plurality of heating areas which are used for respectively heating different positions on the clutch assembly so as to ensure the surface temperature uniformity of the clutch assembly; and the dynamic loading unit is arranged on the other side of the test area, is connected with a release bearing of the clutch assembly through a driving module, and is used for executing a joint and release test with an adjustable stroke. The high-frequency induction coil and the infrared heating plate are adopted for differential heating, and the problem that temperature gradient distribution is not uniform due to the difference of heat conductivity coefficients of materials is solved.

The application discloses an in-situ heat conduction type contaminated soil layering differential gas heating method and application thereof, which comprises the following steps: 1) determining the plot characteristics of a region to be heated; 2) extending the plot to be heated vertically and generalizing layering; 3) determining the heating target temperature of each layer of soil; 4) determining the heating period; 5) determining the heating influence range of a single heating device in the temperature rising section; 6) calculating the power input of a single heating device in each layer of soil unit depth; 7) arranging longitudinal in-situ heating devices in the region to be heated in the contaminated soil, and determining the number of turns of the spiral of the spiral flue gas inner tube in each layer of soil depth according to the power input of a single heating device in each layer of soil unit depth; and 8) heating. The application can flexibly and pertinently realize the differential heating requirements of different depth soil layers, realizes accurate heating, and saves energy.

The present application relates to the technical field of grating picture production, and particularly relates to a bending device and bending method for a bare-eye 3D grating picture based on acrylic substrate, which comprises a base and a stand; the base is provided with a workbench; the stand is provided with a bending assembly; the bending assembly comprises a mounting plate, a bending plate and a pressing plate; the outer periphery of the pressing plate is movably provided with a first heating element; the top of the workbench is movably provided with a resisting plate; the outer periphery of the top of the resisting plate is provided with a second heating element. The present application realizes differential heating of the grating surface and the non-grating surface through grading, the first heating element on the side of the pressing plate heats the non-grating surface at a temperature higher than the softening point of the acrylic material, so as to ensure that the plate is fully softened to meet the bending requirement, the second heating element on the side of the resisting plate preheats the grating surface at a temperature lower than the softening point of the material, and the conduction heat of the main heating area is used to complete fine heating, so as to greatly reduce the range of the heat affected zone, effectively avoid the damage of high temperature to the precise optical structure of the grating layer, and significantly improve the product processing yield.

This application proposes an aerosol generator and a heater for an aerosol generator, the aerosol generator comprising a battery cell for power supply and a heater, the heater comprising a first heating element, a second heating element and a third heating element arranged sequentially in the longitudinal direction and a first electrode, a second electrode and a third electrode operably electrically connected to the battery cell to conduct current in the heater, the first and second heating elements being electrically connected in parallel between the first and second electrodes and the third heating element being connected between the first and third electrodes. The above aerosol generator is advantageous for flexibly controlling the differential heating of different segments of an aerosol generating product by allowing only the first and second heating elements to be connected in parallel and heating simultaneously, and by selecting whether or not to involve the third heating element in heating simultaneously.

The invention relates to the technical field of trenchless pipeline repair, and discloses an intelligent temperature control system and method for resin repair of a drainage pipeline, and the system comprises an in-situ sensing and execution system which is disposed in the pipeline, and is used for obtaining an acoustic signal of a resin material, and carrying out the differential heating and pressure adjustment according to an instruction; the process control and analysis system is in communication connection with the in-situ sensing and executing system and used for solving a curing degree distribution diagram of the repairing area based on the acoustic signals and generating a heating power instruction and a target pressure instruction according to the curing degree distribution diagram; and the pneumatic cooperative control system is used for receiving the target pressure instruction and executing accurate dynamic pressure adjustment on the in-situ sensing and executing system. According to the method, the curing state is obtained based on acoustic tomography, the thermal field is regulated and controlled through predictive thermal management and self-adaptive pressure compensation in a coordinated mode, and it is ensured that the restoration is cured uniformly and is tightly attached to the pipeline.