30557 results about "Heat conservation" patented technology

The invention discloses an electromagnetic heating and heat preservation system for a wind power blade girder plate pultrusion die, and relates to the technical field of thermal field regulation and control, comprising the following steps: activating an electromagnetic coil array to generate an alternating magnetic field, synchronously starting a heat preservation layer device, and triggering a gradient heating mode when the temperature of the die reaches a preset threshold value; a mold temperature field is monitored in real time, the power of an electromagnetic coil and parameters of a heat preservation layer are dynamically adjusted, a target temperature gradient is established, an electromagnetic heating device and a mechanical traction device are linked in the pultrusion process, and heat dissipation control is triggered according to the material flowing state; and after heat dissipation control is completed, the main power source is cut off, the mode is switched to the waste heat recovery mode, mold waste heat is guided into the energy storage device, and the cooling rate is controlled. According to the method, accurate mode switching of electromagnetic heating from uniform temperature rise to gradient heating is achieved through cooperation of magnetic field activation and a gradient triggering mechanism, and the temperature gradient establishment speed and the morphological stability are effectively improved in cooperation with power regulation and control partition differentiation power instruction and thermal insulation layer parameter dynamic matching.

The invention discloses tempered low-emissivity coated glass, which comprises a tempered glass substrate and a composite metal film layer laminated on the substrate, and is tempered coated glass with three metal silver film layers. After a common glass substrate is plated with a composite metal film layer, toughening treatment is carried out, and after toughening treatment, all the metal film layers reflect, interfere and refract light, so that the glass is light blue in the sun, and the decoration and energy-saving effects are good; the visible light transmittance is high, the outdoor visible light reflectivity is low, the solar energy transmittance is low, and the solar energy reflectivity is high; the prepared hollow glass has better energy-saving effects of light control, heat insulation, heat preservation and the like, enables buildings to be closer to nature, is used for near-zero-energy-consumption buildings, enables the buildings to meet the requirements of the national standard GB55015-2021 General Standard for Energy conservation and Renewable Energy Utilization of Building, and has great contribution and significance on carbon neutralization and carbon peak reaching of the buildings.

The invention discloses light blue toughened glass, which comprises a toughened glass substrate and a composite metal film layer laminated on the substrate, and is toughened coated glass with three metal silver film layers. After a common glass substrate is plated with a composite metal film layer, toughening treatment is carried out, and after toughening treatment, the metal film layers reflect, interfere and refract light, so that the glass is light blue in the sun, is low-radiation coated toughened glass, and has good decoration and energy-saving effects; the visible light transmittance is high, the outdoor visible light reflectivity is low, the solar energy transmittance is low, and the solar energy reflectivity is high; the prepared hollow glass has better energy-saving effects of light control, heat insulation, heat preservation and the like, so that a building is closer to the nature, and the hollow glass is used for near-zero-energy-consumption buildings, so that the building meets the requirements of the national standard GB55015-2021 General Standard for Building Energy conservation and Renewable Energy Utilization.

The invention discloses low-radiation coated tempered glass, which comprises a tempered glass substrate and a composite metal film layer laminated on the substrate, and is tempered coated glass with three metal silver film layers. After a common glass substrate is plated with a composite metal film layer, toughening treatment is carried out, and after toughening treatment, the metal film layers reflect, interfere and refract light, so that the glass is light green (French green) in the sun, and the decoration and energy-saving effects are good; the visible light transmittance is high, the outdoor visible light reflectivity is low, the solar energy transmittance is low, and the solar energy reflectivity is high; the prepared hollow glass has better energy-saving effects of light control, heat insulation, heat preservation and the like, so that a building is closer to the nature, and the hollow glass is used for near-zero-energy-consumption buildings, so that the building meets the requirements of the national standard GB55015-2021 General Standard for Building Energy conservation and Renewable Energy Utilization.

The invention discloses coated toughened glass, which comprises a toughened glass substrate and a composite metal film layer laminated on the substrate, and is coated toughened glass with three metal silver film layers. According to the invention, after a common glass substrate is plated with the composite metal film layers, toughening treatment is carried out, and after the toughening treatment, the metal film layers reflect, interfere and refract light, so that the glass is light gray in the sun, and the decoration and energy-saving effects are good; the visible light transmittance is high, the outdoor visible light reflectivity is low, the solar energy transmittance is low, and the solar energy reflectivity is high; the prepared hollow glass has better energy-saving effects of light control, heat insulation, heat preservation and the like, so that a building is closer to the nature, and the hollow glass is used for near-zero-energy-consumption buildings, so that the building meets the requirements of the national standard GB55015-2021 General Standard for Building Energy conservation and Renewable Energy Utilization.

The invention discloses a preparation method of low-radiation coated toughened glass, which comprises the following steps: sintering a target material, carrying out moisture removal and degassing pretreatment on glass, carrying out coating treatment and toughening treatment, and laminating a composite metal film layer on a toughened glass substrate to prepare the toughened coated glass with three metal silver film layers. According to the method disclosed by the invention, after a common glass substrate is plated with the composite metal film layers, toughening treatment is carried out, and after the toughening treatment, all the metal film layers reflect, interfere and refract light, so that the glass disclosed by the invention is light green (French green) in the sun, and the decoration and energy-saving effects are good; the visible light transmittance is high, the outdoor visible light reflectivity is low, the solar energy transmittance is low, and the solar energy reflectivity is high; the prepared hollow glass has better energy-saving effects such as light control, heat insulation and heat preservation, enables buildings to be closer to the nature, is used for near-zero energy consumption buildings, and enables the buildings to meet the requirements of the national standard General Standard for Building Energy conservation and Renewable Energy Utilization.

The invention discloses a preparation method of light gray tempered low-emissivity coated glass. The preparation method comprises the following steps: sintering a target material, carrying out moisture removal and degassing pretreatment on glass, carrying out coating treatment and tempering treatment, and laminating a composite metal film layer on a tempered glass substrate to prepare the tempered coated glass with three metal silver film layers. According to the method, after the common glass substrate is plated with the composite metal film layers, toughening treatment is carried out, and after toughening treatment, the metal film layers reflect, interfere and refract light, so that the glass is light gray in the sun, and the decoration and energy-saving effects are good; the visible light transmittance is high, the outdoor visible light reflectivity is low, the solar energy transmittance is low, and the solar energy reflectivity is high; the prepared hollow glass has better energy-saving effects such as light control, heat insulation and heat preservation, enables buildings to be closer to the nature, is used for near-zero energy consumption buildings, and enables the buildings to meet the requirements of the national standard General Standard for Building Energy conservation and Renewable Energy Utilization.

The invention discloses a preparation method of tempered low-emissivity coated glass. The preparation method comprises the following steps: sintering a target material, carrying out moisture removal and degassing pretreatment on glass, carrying out coating treatment and tempering treatment, and laminating a composite metal film layer on a tempered glass substrate to prepare the tempered coated glass with three metal silver film layers. According to the method, after a common glass substrate is plated with the composite metal film layers, toughening treatment is carried out, and after toughening treatment, the metal film layers reflect, interfere and refract light, so that the glass is light blue in the sun, and the decoration and energy-saving effects are good; the visible light transmittance is high, the outdoor visible light reflectivity is low, the solar energy transmittance is low, and the solar energy reflectivity is high; the prepared hollow glass has better energy-saving effects of light control, heat insulation, heat preservation and the like, enables buildings to be closer to nature, is used for near-zero-energy-consumption buildings, enables the buildings to meet the requirements of the national standard General Standard for Energy conservation and Renewable Energy Utilization of Building, and has great contribution and significance on carbon neutralization and carbon peak reaching of the buildings.

The mass concrete curing method based on the intelligent temperature control system comprises the following steps that concrete is divided into a top layer, a bottom layer and a middle layer, each layer is provided with an independent temperature control pipeline, and temperature monitoring points are designed; constructing a three-dimensional thermal field finite element model containing a hydration heat release function, temperature control pipeline heat sink and boundary conditions, and generating data by using a calculation result of the finite element model to train a neural network prediction model; a temperature control pipeline and a temperature monitoring point are installed before mass concrete is poured, and heat preservation is covered after pouring; data is collected in real time and input into the prediction model, the predicted temperature of each temperature monitoring point is output, if the temperature difference control threshold value or the temperature reduction control threshold value is exceeded, temperature control pipeline parameters and heat preservation measures of the corresponding layer are adjusted, and a temperature control strategy is executed after calculation is repeated till the requirement is met. The concrete temperature field is accurately controlled, temperature difference over-limit is effectively avoided, and the mass concrete curing quality is improved.

The invention relates to a method for improving the same-circle mechanical property uniformity of a low-carbon cold heading steel wire rod, which comprises the following steps of: firstly, carrying out sectional heating on a steel billet at the temperature of a preheating section of 715-785 DEG C, the heating temperature of a first section of 810-850 DEG C, the heating temperature of a second section of 920-960 DEG C and the temperature of a soaking section of 1000-1040 DEG C; then the prepared steel billet is rolled into a wire rod, the initial rolling temperature ranges from 910 DEG C to 950 DEG C, the finish rolling inlet temperature ranges from 865 DEG C to 885 DEG C, the finish rolling outlet temperature is smaller than or equal to 1020 DEG C, and the finish rolling temperature ranges from 890 DEG C to 910 DEG C; the prepared wire is subjected to water cooling to 840-860 DEG C for spinning, and then the wire is rolled into a wire rod at 780-850 DEG C; and finally, the prepared wire rod is placed on a stelmor slow cooling line for heat preservation and slow cooling, the stelmor slow cooling speed is 0.2-1 DEG C / s, the temperature of entering a heat preservation vestibule is 740-770 DEG C, the heat preservation time of the heat preservation vestibule is 75-150 min, and the temperature of leaving the heat preservation vestibule is smaller than or equal to 400 DEG C. By means of the method, the same-circle mechanical property tensile strength fluctuation of the steel wire rod is smaller than or equal to 10 Mpa, the percentage reduction of area fluctuation is smaller than or equal to 2%, the percentage elongation after fracture fluctuation is smaller than or equal to 2%, the yield strength fluctuation is smaller than or equal to 8 Mpa, metallographic structures are evenly distributed, and no abnormal structure exists.

The invention provides a frying and baking equipment heat preservation automatic control method and system, and relates to the technical field of food processing equipment control, and the method comprises the steps: collecting temperature signals of different positions through a plurality of groups of thermocouples and infrared thermal imaging sensors which are arranged in a frying and baking area, constructing a dynamic three-dimensional temperature field model, and obtaining a dynamic three-dimensional temperature field model; calculating a temperature standard deviation and a maximum temperature gradient in real time according to the dynamic three-dimensional temperature field model; and when the temperature standard deviation is larger than or equal to a preset threshold value, according to the heat distribution difference of the three-dimensional temperature field model, a multi-region differential compensation strategy is generated, the power distribution proportion of each heating unit is dynamically adjusted, and the duty ratio parameter of pulse width modulation is optimized in real time. Through multi-sensor accurate monitoring, dynamic regulation and control and intelligent stop judgment, uniform and stable temperature control, energy conservation and consumption reduction are achieved, the service life of equipment is prolonged, meanwhile, the use safety of a user is guaranteed, and the cooking experience is improved.

The invention discloses a template embedded type dam face permanent heat preservation protection module and a prefabrication and construction method. Comprising a heat preservation core layer, a facing anti-seepage protection layer is arranged on the side, close to a concrete pouring formwork, of the heat preservation core layer, an internal pressure-bearing protection layer is arranged on the side, close to dam surface layer crack limiting steel bars, of the heat preservation core layer, and a thermal broken bridge supporting keel is arranged in the heat preservation core layer; an anchoring device is arranged in the area between the internal pressure-bearing protection layer and the dam surface layer crack limiting steel bars. The modular prefabrication and construction method is adopted, the prefabrication and installation method of a single module is simple and efficient, details such as anchoring protection measures are fully considered, the engineering construction operability is high, convenience and high efficiency are achieved, and the construction time of the heat preservation layer is greatly saved.

The invention provides an anti-condensation control system for a chip high and low temperature aging experiment box. The anti-condensation control system comprises a sampling module, a control module and an execution module, the sampling module comprises sensors arranged in the high and low temperature test box, the temperature of a high and low temperature area of the high and low temperature test box and the temperature and humidity of a heat preservation area and a normal temperature area are respectively collected, and the collection result of the sampling module is used for the control module to analyze the condensation risk and open or close the anti-condensation system; the execution module comprises an anti-condensation heating belt, a drying compressed air device and an anti-condensation fan, and the execution module executes various anti-condensation measures according to the control of the control module. The invention further provides a fault detection method for the chip high-low temperature aging test box anti-condensation control system, the chip high-low temperature aging test box anti-condensation control system can be effectively monitored, problems of the control system can be found in time, and a control strategy is adjusted. The invention also provides a fault detection method for the anti-condensation control system of the chip high and low temperature aging experiment box.

The invention relates to a steel energy-saving curtain wall structure, and belongs to the technical field of curtain walls. The steel energy-saving curtain wall structure comprises a steel square tube, an aluminum-plastic co-extrusion frame, a nylon composite polyurethane foaming heat insulation core, an aluminum-plastic co-extrusion plate, a curtain wall plate and a foaming plastic heat insulation plate, and the aluminum-plastic co-extrusion frame is fixedly connected to one end of the steel square tube; in the environment below zero, extrusion force of water on nitrogen is increased by freezing, the nitrogen extrudes and expands the box-shaped air bag, the box-shaped air bag is kept firm all the time, the probability that the box-shaped air bag is affected by thermal expansion and cold contraction is effectively reduced, the sealing effect between the curtain wall plate and the mounting frame is further improved, and the service life of the curtain wall plate is prolonged. The heat insulation performance of the whole curtain wall can be improved, the heat load loss of temperature difference heat transfer and the load intensity of solar radiation are effectively reduced, and the building energy efficiency is improved.

The invention discloses a heat preservation and thermal insulation project whole industrial chain quality tracing method and system, and the method comprises the steps: obtaining industrial chain data and monitoring data of a heat preservation and thermal insulation project, carrying out the tracing coding based on the industrial chain data and the monitoring data, and constructing a heat preservation and thermal insulation project whole industrial chain quality tracing network, determining industrial chain data corresponding to the to-be-traced monitoring data through the traceability code, and performing correction and anomaly screening on the to-be-traced monitoring data to obtain to-be-traced abnormal monitoring data, and according to the to-be-traced abnormal monitoring data and the thermal insulation project whole industry chain quality traceability network, determining a thermal insulation project whole industry chain quality hidden danger source. The method not only can improve the efficiency and accuracy of quality traceability of the whole industrial chain of the thermal insulation project, but also has good interpretability, and can be directly applied to a quality traceability system of the whole industrial chain of the thermal insulation project.

The utility model relates to the technical field of automatic defrosting, and provides an automatic defrosting mechanism of an air source heat pump, which comprises an air source heat pump body and a heat exchange evaporator, the heat exchange evaporator comprises a heat exchange fin, a defrosting pipe is fixedly mounted on the heat exchange fin, the air source heat pump body is communicated with a cold water pipe and a hot water pipe, and the cold water pipe is communicated with the hot water pipe. A heat preservation heating box is fixed to the outer wall of the air source heat pump body and communicated with a first water guide pipe, the first water guide pipe is communicated with one end of the defrosting pipe, the hot water pipe is further communicated with a water inlet pipe, the water inlet pipe is communicated with the heat preservation heating box, and the communication position is controlled by an electromagnetic control valve. The second water guide pipe communicates with a one-way water valve. The water inlet pipe is additionally arranged on the hot water pipe of the automatic defrosting mechanism of the air source heat pump and matched with the first water guide pipe, the defrosting pipe and the second water guide pipe, the heat exchange evaporator is defrosted, it is guaranteed that the heat exchange evaporator makes full contact with outside air, and the working efficiency of the heat exchange evaporator is not affected.

The invention discloses a nuclear fusion superconducting coil heat treatment temperature control system and method. The temperature control system comprises a fuel gas heating control subsystem, an electric heating control subsystem, a wind speed control subsystem, a temperature acquisition subsystem and a temperature analysis feedback subsystem. The temperature control method comprises the following steps: performing an electric heating zoning temperature control process in a heat treatment temperature rise stage; and a gas heating and electric heating zoning cooperative temperature control process in the heat treatment heat preservation stage is carried out. According to the method, the power load peak value is remarkably reduced, and meanwhile, the method is suitable for the heat treatment scene of the nuclear fusion superconducting coil by dynamically distributing the power proportion of gas and electric heating; the actual temperature of each temperature control subarea of the heating furnace body and the superconducting coil is detected in real time and compared with the preset target temperature value of the corresponding process temperature curve in real time, the top layer is combined with stirring fan rotating speed dynamic adjustment and gas-electric power complementation, a closed-loop feedback chain from a local part to an overall part is formed, and the response speed and stability are effectively improved.

The invention discloses a double-water-tank water heater, a control method, a storage medium and electronic equipment. The double-water-tank water heater comprises a heat pump unit, a heating water tank, a heat preservation water tank and a solar heat collector. The water outlet end of the heat pump unit is communicated with the first water inlet of the heating water tank, and the water inlet of the heat pump unit is communicated with the first water outlet of the heating water tank; a first water inlet of the heat preservation water tank is communicated with a second water outlet of the heating water tank, a first water outlet of the heat preservation water tank is communicated with a user water outlet end, and a second water outlet of the heat preservation water tank is communicated with a second water inlet of the heating water tank; the water outlet end of the solar heat collector is communicated with the third water inlet of the heating water tank, and the water inlet of the solar heat collector is communicated with the third water outlet of the heating water tank. According to the invention, when the heating triggering temperature of the heat preservation water tank is set to be low, heating can be quickly completed, the heating time is shortened, and the hot water outlet speed is ensured, so that the water outlet speed and the energy efficiency are both considered.

The invention belongs to the field of charging pile energy recovery, and particularly relates to a charging pile system based on an immersed liquid cooling technology and waste heat recovery. A power distribution unit is arranged on the inner side wall of a shell, a liquid cooling box is arranged in the shell, the liquid cooling box is filled with cooling liquid, and a charging module is arranged in the liquid cooling box; the charging module is completely immersed in cooling liquid in the liquid cooling box, two heat exchange assemblies are arranged on one side of the liquid cooling box and located in the shell, a water storage assembly is arranged on one side of the shell, and the liquid cooling box and the two heat exchange assemblies communicate with each other and form circulating heat exchange on the cooling liquid in the liquid cooling box. The two heat exchange assemblies and the water storage assembly communicate with each other, and circulating heat exchange of water in the heat preservation water tank is formed. Through the arrangement of the cooling liquid purity detection module and other assemblies, real-time purity detection can be conducted on cooling liquid flowing back into the liquid cooling box, and when the first plate heat exchanger breaks down, the second plate heat exchanger is switched to guarantee hot water supply.

The invention belongs to the technical field of solid waste resource utilization, and discloses a steel slag modified cementing material, a preparation method and application, and the preparation method comprises the following steps: S1, collecting high-temperature steel slag; s2, regulating and controlling components of the molten steel slag under heat preservation; s3, phase modification and reconstruction in the heat preservation stage; s4, reconstructing a first-stage cooling phase of the modified steel slag; s5, carrying out second-stage cooling phase reconstruction on the modified steel slag; and S6, cooling post-treatment is carried out. According to the invention, through synchronous improvement of a formula and a preparation process, direct treatment of molten steel slag, and a method of combining thermal insulation and two-stage cooling phase reconstruction and modification, the content of each component in the steel slag, crystal grains and other phases are controlled, so that the steel slag meets new national standard requirements at the same time; the treated modified material can be used as clinker to be applied to manufacturing of ordinary Portland cement, and the consumption amount is increased. According to the method, energy and resources are utilized at the same time, the resource utilization value and the total consumption amount of the steel slag are increased, and the method has high application value in industry.

The present invention belongs to the field of microbead preparation technology, and specifically relates to a microbead production process with adjustable internal phase based on microfluidic technology and its application. The microbead production process includes the following steps: (1) raw material transportation: the required materials are transported to the microfluidic chip separately through a pump under heat preservation conditions; (2) logistics shearing: the required materials are sheared in the microfluidic chip to obtain composite droplets; (3) cooling and molding: after the sheared droplets are cooled, they are cooled and solidified using a cooling medium to form microbead particles; (4) product collection: the microbead particles and the cooling medium are subjected to solid-liquid separation, filtered, and collected to obtain microbeads. The microbead production process of the present invention can quickly realize the continuous production of double-layer microbeads, realize the precise regulation of the inner layer of the double-layer microbeads, and quickly and accurately control the particle size of the microbeads; at the same time, it can quickly realize the production conversion between single-layer microbeads and double-layer microbeads.

The invention discloses welding equipment for production of a refrigeration temperature controller of a refrigeration house, and relates to the technical field of welding equipment.The welding equipment comprises a cabinet and a machining mechanism, the machining mechanism comprises a connecting sliding block and an air cylinder, a hydraulic cylinder is installed on the side of the outer side of the connecting sliding block, and a welding main machine is fixedly installed at the telescopic end of the hydraulic cylinder; a welding gun is installed at the bottom of the welding main machine, a heat preservation assembly is installed on the outer side, close to the bottom, of the welding gun and comprises an annular sliding part, a cylinder is fixedly installed on the edge side of the outer side of the annular sliding part, and a reset spring is fixedly installed between the top of the cylinder and the conical face of the top of the outer side of the welding gun. A heat conducting piece is fixedly installed on the side of the inner cavity of the cylinder and close to the edge of the annular sliding piece, and a clamping piece is fixedly installed on the outer circle face of the cylinder and close to the bottom through a connecting rod. According to the welding equipment for production of the refrigeration temperature controller of the refrigeration house, the heat preservation effect is achieved, heat preservation can be conducted, the situation that the temperature difference is too large is not likely to occur, and the welding quality is high.

The invention relates to the technical field of magnesium-aluminum alloy heat treatment, and discloses a high-strength and high-conductivity magnesium-aluminum alloy heat treatment method which comprises the following steps: step 1, surface cleaning treatment: carrying out surface cleaning treatment on a magnesium-aluminum alloy workpiece to remove oil stains, impurities and an oxide layer on the surface; secondly, preheating treatment is conducted, specifically, the cleaned magnesium-aluminum alloy workpiece is put into a heating furnace, the temperature is slowly increased to 200 DEG C at the temperature increasing speed of 10 DEG C / min, and heat preservation is conducted for 1-2 hours at the temperature; thirdly, the temperature is rapidly increased to the solid solution temperature, and after preheating treatment is completed. Precipitated phase distribution is optimized through two-stage aging treatment, a precipitated phase is preliminarily formed through low-temperature short-time aging, then the precipitated phase is uniformly grown through high-temperature long-time aging, local aggregation is avoided, meanwhile, solution treatment and quenching cooling are optimized, uniform dissolution of solute atoms is ensured, the alloy strength and hardness are improved, and the service life of the alloy is prolonged. And the fatigue resistance and the crack propagation resistance are remarkably improved through uniform precipitated phase distribution.

The invention relates to the technical field of heat preservation and energy conservation, and particularly discloses a system for testing the heat conductivity coefficient of a pipeline heat preservation material under an engineering meteorological environment condition, which comprises a straight pipe test piece with calibration ends fixedly mounted at two ends, and a heat preservation covering material wrapped on the outer wall of the straight pipe test piece to form a pipe fitting to be tested; the ventilation hood is positioned in the sealed space; air pipes at the output end of the air conditioning system are all located in the sealed space, and air outlets of the air conditioning system directly face the ventilation hood. By simulating multi-parameter coupling working conditions such as in-pipe medium temperature gradient, external temperature and humidity / wind speed circulation and mechanical vibration, the heat conductivity coefficient of the material is dynamically corrected, whether the heat conductivity performance of each layer of material meets the standard specification or not is verified, and the rationality of the composite structure is quantitatively evaluated based on a thermal resistance network model. Data support is provided for optimizing the heat preservation layer combination mode and thickness design, and the problem of design deviation caused by the fact that a traditional method cannot reflect actual engineering working conditions is solved.

The present application belongs to the technical field of superalloys. Disclosed is a preparation method for a nickel-based superalloy. The present application solves the problem of a nickel-based superalloy in the prior art making it difficult to satisfy the comprehensive requirements of a component for both a long alloy endurance life and a low crack propagation rate. The preparation method comprises: step 1: performing smelting, so as to obtain a cast ingot; step 2: subjecting the cast ingot to a homogenizing heat treatment, wherein the homogenizing heat treatment comprises two sections of heat preservation; and after the second-section heat preservation, performing furnace cooling to 1000+ / -10°C or below, and then performing discharging and air cooling; step 3: preparing a bar blank and a forging piece by means of forging; step 4: performing a solution treatment; and step 5: performing a stabilization and aging treatment, so as to obtain a nickel-based superalloy. The nickel-based superalloy prepared by means of the method of the present application has a high strength, good low-cycle fatigue performance, a low crack propagation rate and excellent comprehensive performance.

The invention relates to a steel bar for an automobile transmission shaft based on an ecological electric furnace and a production method. The steel bar for the automobile transmission shaft comprises the following chemical components: 0.18-0.22% of C, 0.22-0.33% of Si, 0.85-1.00% of Mn, less than or equal to 0.015% of P, less than or equal to 0.005% of S, 1.05-1.20% of Cr, less than or equal to 0.25% of Ni, less than or equal to 0.10% of Mo, 0.05-0.09% of Ti and less than or equal to 0.15% of Cu. And the balance of Fe and impurities. The production process comprises the steps of ecological electric furnace smelting, LF refining, RH refining, continuous casting, casting blank heating, rolling, heat preservation and heat treatment. According to the invention, a smelting continuous casting process of'ecological electric furnace + LF + RH + continuous casting 'is adopted, and is matched with a proper rolling process, so that the steel bar for the automobile transmission shaft, which is high in steel purity and excellent in mechanical property and surface quality, is produced, and the requirements of high-end products can be met.

The invention relates to the technical field of preparation of iron phosphate materials, in particular to a method for doping iron phosphate with titanium, which comprises the following steps: 1, dissolving a titanium dioxide by-product ferrous sulfate powder in water to prepare a titanium-containing iron source solution; 2, adding water into the reaction kettle, and stirring; 3, adding the titanium-containing iron source solution, the phosphorus source solution, ammonia water and an oxidizing agent into a reaction kettle to prepare primary slurry; 4, carrying out filter pressing on the primary slurry, washing until the conductivity is less than or equal to 2000us / cm, and then adding water to prepare secondary slurry; 5, phosphoric acid is added into the reaction kettle for bottoming, and the temperature is increased to 60-70 DEG C; 6, adding the secondary slurry into the reaction kettle, and carrying out heat preservation reaction on the secondary slurry and phosphoric acid; and 7, filtering the reaction product obtained in the step 6, washing until the conductivity is less than or equal to 500us / cm, and then drying and sintering. According to the method, the titanium doping technological process is simplified, and meanwhile the titanium element utilization rate in the titanium dioxide by-product and the purity of the titanium-doped iron phosphate product are improved.

The invention provides an energy-saving thermal-insulation self-adaptive dynamic control method and system for frying and baking equipment, and relates to the technical field of data processing, and the method comprises the steps: 1, collecting the surface temperature distribution, thickness gradient and environment temperature and humidity data of food materials in real time, extracting three-dimensional thermal diffusion morphological features, and generating an initial morphological feature vector; and step 2, based on a real-time deviation value of a set target temperature and an actually measured food material core temperature, a pseudo partial derivative estimation value is calculated in combination with the morphological feature vector, and periodic intermittent power parameters including a duty ratio and a period are generated according to the pseudo partial derivative estimation value. Through multi-source data acquisition and analysis, parameter dynamic calculation and optimization and knowledge base intelligent matching, accurate temperature control, high efficiency and energy saving are realized, and the service life of equipment is prolonged while the food material cooking quality is improved.

The utility model provides a furnace body structure and semiconductor process equipment, the furnace body structure comprises at least one furnace body unit, each furnace body unit comprises a thermal insulation support main body and an insulation support structure, the thermal insulation support main body is annular, and the insulation support structure is limited and fixed on the inner peripheral side of the thermal insulation support main body; the insulation supporting structure is used for limiting and fixing the heating wire in the space defined by the heat preservation supporting body. According to the scheme, the heating wire is small in deformation and not prone to collapse, the short circuit risk of the heating wire can be reduced, the heating efficiency of the heating wire can be improved, and the service life of the heating wire can be prolonged.

The invention discloses an external thermal insulation and heat transfer testing device for a thermal insulation and decoration integrated plate, and relates to the technical field of thermal insulation and decoration integrated plate heat transfer testing. By arranging the longitudinal position adjusting assembly and the transverse position adjusting assembly, the positions of the first temperature measuring unit and the second temperature measuring unit are adjusted at the same time, that is, when the transverse position adjusting assembly adjusts the transverse positions of the first temperature measuring assembly and the second temperature measuring assembly, the first temperature measuring unit and the second temperature measuring unit are adjusted; the longitudinal position adjusting assembly longitudinally adjusts the positions of the first temperature measuring unit and the second temperature measuring unit at the corresponding positions at the same time, so that the first temperature measuring unit and the second temperature measuring unit are located at a plurality of temperature measuring points in the testing time period, and then temperature values in different areas of the outer wall of the heat preservation and decoration integrated plate are obtained. According to the multiple measured temperature values, the overall heat transfer performance of the heat preservation and decoration integrated plate can be analyzed, the local heat transfer performance of the heat preservation and decoration integrated plate can be known, and comprehensive analysis of the heat transfer performance condition of the heat preservation and decoration integrated plate is facilitated.