9034 results about "Heating furnace" patented technology

The invention relates to the technical field of control, and particularly discloses a multivariable energy efficiency optimization control system for a heating furnace, which is used for solving the problems of local overheating, non-uniform temperature and difficulty in accurate positioning and compensation of heat loss in the operation of the existing cracking heating furnace. Comprising a parameter detection module, a multivariable coupling modeling and simulation module, an optimization control module and an execution and feedback module. According to the method, dynamic digital twinning is constructed through multi-modal online sensing and data assimilation, a Pareto frontier solution is generated based on model prediction control and improved NSGA-II parallel optimization, and the weight is adaptively adjusted; and when the hot spot / cold spot is triggered, a quadric surface fitting compensation strategy is implemented and issued for execution, so that high-precision simulation prediction, precise closed-loop control and real-time online energy efficiency optimization are realized.

The invention relates to a production method of a wire rod for an alloy welding wire, and belongs to the technical field of steel manufacturing. Mn, Cr and Ni alloying and V and Ti microalloy strengthening are adopted, and a certain amount of B is added, so that the requirement of a 60-kilogram-level alloy welding wire is met. The process route is designed as follows: molten iron pretreatment, converter smelting, LF furnace external refining, 150mm / 180mm square billet continuous casting, heating furnace heating, rolling, roller way slow cooling and heat preservation vestibule heat preservation. Molten steel with stable components, good castability and gas content meeting the requirement is obtained through the technologies of molten iron pretreatment, converter smelting, LF furnace external refining and the like, after the molten steel is poured into a continuous casting blank, stack cooling or hot delivery and hot charging are conducted for 24 hours, and the technologies of high-temperature rolling, high-temperature spinning, roller way slow cooling and heat preservation vestibule are adopted for high-speed wire rolling. By adopting the process of the scheme, the wire rod can be prevented from generating abnormal structures such as martensite and bainite which influence drawing, and the wire rod for the high-strength alloy welding wire with the specification of phi 5.5 mm, which has stable components and can be drawn into filaments with the specification of phi 1.2 mm without annealing, is obtained.

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.

According to the method for gradient separation of the heavy metal in the household garbage incineration fly ash, the composition and content of the household garbage incineration fly ash are detected in advance, and grinding pretreatment is conducted on the household garbage incineration fly ash; a plurality of reaction temperature intervals corresponding to various heavy metals in the household garbage incineration fly ash are arranged in a heating furnace, the household garbage incineration fly ash is subjected to multi-stage heating roasting, and chlorine element compounds contained in the household garbage incineration fly ash react with the heavy metals under the high-temperature condition to be volatilized, so that heavy metal chloride gas is obtained; a certain amount of protective gas is introduced into the heating furnace in each reaction temperature interval to prevent the unvolatilized heavy metal chloride from being oxidized, and finally all heavy metals are successfully separated out; a plurality of condensation temperature sections are arranged in the sectional condensation pipe, heavy metal chloride is recycled step by step at different condensation temperatures, and separation and recycling of different heavy metals are achieved; according to the scheme, complex operation procedures can be avoided, energy consumption is reduced, and the method has remarkable economic and social benefits and wide application prospects.

The invention discloses a method for preventing a high-carbon tool steel hot rolled steel coil from being flattened, which comprises the following steps of: providing a continuous casting slab which comprises the following components in percentage by mass: 0.65 to 1.35 weight percent of C, 0 to 1.6 weight percent of Si, 0 to 1.2 weight percent of Mn, 0 to 1.2 weight percent of Cr, less than or equal to 0.030 weight percent of P, less than or equal to 0.030 weight percent of S and the balance of iron and inevitable impurities; the charging temperature of the continuous casting sheet billet is larger than or equal to 300 DEG C, the continuous casting sheet billet is fed into a heating furnace to be heated, the discharging temperature of the continuous casting sheet billet is 1150-1250 DEG C, and a first sheet billet is obtained; the first plate blank is subjected to rough rolling, the rough rolling and finish rolling temperature ranges from 1050 DEG C to 1150 DEG C, and an intermediate blank is obtained; the intermediate billet is subjected to finish rolling, the finish rolling temperature of finish rolling is 800-950 DEG C, and finish rolled steel is obtained; laminar cooling is conducted on the finish-rolled steel in a front-section centralized cooling mode, final fine adjustment water and front and rear side spraying of laminar cooling are closed, the temperature of the finish-rolled steel is reduced to the first target temperature to the phase transformation point, and cooled steel is obtained; and the cooled steel is coiled at the temperature of 590-690 DEG C, the coiling tension is increased by 10%-20% in the coiling process, and a hot rolled steel coil of the high-carbon tool steel is obtained.

The invention discloses a self-correction optimization method and system for heat transfer boundary conditions of a water jacket heater, and particularly relates to the technical field of condition optimization control. The method comprises the following steps: constructing a thermal fatigue deformation trend estimation model by collecting a furnace wall surface temperature sequence, furnace wall surface heat flux distribution information and a furnace wall thermal stress response curve of a furnace body structure component, and generating a geometric parameter drift vector; performing structure equivalent mapping analysis on the geometric parameter drift vector, and extracting contact thermal resistance change information; performing furnace wall heat flow field reconstruction on the geometric parameter drift vector to obtain a dynamic correction vector; and the contact thermal resistance change information and the heat flow correction vector are comprehensively analyzed, a time-varying boundary condition inversion model is constructed, and a multi-parameter coupling boundary correction set is output and used for updating the boundary conditions in the water jacket heating furnace heat transfer simulation model, so that identification and self-adaptive correction of the boundary conditions are realized, and the heat transfer control precision and the heat efficiency are improved.

The invention discloses a forging method for improving plasticity of a large invar alloy steel ingot and invar alloy, and the forging method comprises the following steps: smelting molten steel by adopting an electric furnace, and casting to obtain the large invar alloy steel ingot with the weight of 15-25t; the cold-state invar alloy steel ingot is heated to 1000-1200 DEG C for heat preservation, and the heat preservation time is controlled to be longer than or equal to 10 h; the heated invar alloy steel ingot is subjected to three-heating-number upsetting and drawing-out, upsetting is conducted according to the rolling reduction of 15-50% of the total height of the invar alloy steel ingot in each heating number, the invar alloy steel ingot is drawn out to the height of the original invar alloy steel ingot after upsetting, and the invar alloy steel ingot is returned to a heating furnace to be heated and subjected to heat preservation after upsetting and drawing-out in each heating number; the final forging temperature of the last heating number is greater than or equal to 750 DEG C; and the invar alloy steel ingot subjected to heating and heat preservation in the last heating number is forged to the specified size, and then the invar alloy steel ingot is slowly cooled to the room temperature in air to obtain an invar alloy steel forging stock. The thermoplasticity of the large invar alloy steel ingot is improved, and the technical problem that the large invar alloy steel ingot is prone to cracking during forging is solved.

The invention relates to the technical field of fused salt purification, and provides a fused salt purification device and a fused salt purification method.The fused salt purification device comprises a heating furnace, heat insulation layers, a reactor, a sleeve, a gas inlet and outlet device and a crucible, the heating furnace is provided with multiple sections of heating areas in the height direction, and the heating areas are separated by the heat insulation layers and can independently control the temperature; the reactor is partially arranged in the heating furnace and extends into the multiple sections of heating areas, and the reactor is provided with a reaction cavity and a cavity opening communicated with the reaction cavity; the sleeve is placed in the reaction cavity from the cavity opening and covers the cavity opening, a placement cavity is formed in the sleeve, and the gas inlet and outlet device is communicated with the placement cavity and used for providing inert gas for the placement cavity; the crucible is placed in the containing cavity and used for containing the fused salt to be purified. After the to-be-purified fused salt is heated and melted, each section of heating area can be controlled from top to bottom to slowly cool, so that the fused salt is solidified from top to bottom, purification is completed, impurities flow to the bottom of the crucible, the upper-layer purified fused salt is obtained, and the structure is simple.

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 belongs to the technical field of crude oil electric heating furnaces, and relates to a crude oil electric heating furnace control system and a crude oil electric heating furnace. Temperature feature vectors of multiple independent heating sections are collected, a dynamic weight matrix used for representing the thermal inertia unbalance degree is generated, and temperature control compensation gains are generated through real-time analysis in combination with crude oil viscosity-temperature data; performing adaptive adjustment by combining corresponding element values of the dynamic weight matrix to output a segmented power regulation instruction, preferentially calling redundant power of the main and auxiliary coils for cooperative heating, starting adjacent segment compensation heating when the main and auxiliary power is insufficient, and setting heat balance constraint and deviation monitoring termination conditions at the same time; local over-coking is avoided while the power resource utilization rate of the crude oil electric heating furnace is remarkably improved, the viscosity is rapidly converged to a steady-state range through closed-loop feedback of viscosity data after heating and iterative optimization of a regulation instruction, and the stability of long-term operation of the system and the achievement speed of a control target are remarkably improved.

The invention discloses an automatic feeding and discharging device of a continuous heating furnace, and relates to the technical field of industrial heat treatment equipment. An automatic feeding and discharging device of a continuous heating furnace comprises two first transmission rollers rotationally connected to a feeding port and a discharging port of a furnace body, and further comprises a conveying mesh belt connected to the two first transmission rollers in a sleeving mode; the first motor is fixedly connected to one side of the furnace body; through cooperative operation of the conveying net belt and the conveying belt with the jacking columns, dynamic adjustment of the jacking frequency and precise synchronous control are combined, the contact area of a workpiece and the conveying belt is effectively reduced, bottom thermal compensation is achieved through the heat conduction jacking columns, and meanwhile through integrated control of an automatic adjustment system and the waste heat recovery device, the waste heat recovery efficiency is improved. The problems that traditional equipment is uneven in heating, high in energy consumption and frequent in maintenance are solved, and the device has the advantages that the workpiece heating uniformity is improved, the service life of the device is prolonged, energy consumption is reduced, and intelligent dynamic regulation and control are achieved.

The invention discloses a production method of 6-8mm low-cost high-strength rare earth weathering resistant steel. The production method comprises the following steps: (1) smelting-continuous casting production; wherein the molten steel comprises the following chemical components in percentage by mass: 0.11 to 0.13 percent of C, 0.25 to 0.35 percent of S , 0.5 to 0.6 percent of Mn, 0.06 to 0.08 percent of P, less than or equal to 0.008 percent of S, 0.20 to 0.25 percent of Cu, 2.1 to 2.3 percent of Cr, 0.12 to 0.14 percent of T , 20 to 80 ppm of La / Ce and 0.020 to 0.050 percent of Alt; and (2) a hot rolling production process flow: casting blanks, an induction heating furnace, a laboratory rolling mill, laminar cooling and simulated coiling. A conventional C, S, i and Mn component system design is adopted, and the corrosion resistance of the steel strip is improved by adding corrosion-resistant elements Cu, Cr, P and Ti and a small amount of rare earth La / Ce mixed rare earth.

The invention discloses a production method for eliminating martensite and bainite of a 70Kg-grade steel wire rod for welding, which comprises the working procedures of steel billet heating, controlled rolling, compensation heating and cooling and waste heat isothermal heat treatment, in the steel billet heating procedure, the heating time of a rectangular billet in a heating furnace is greater than or equal to 5 hours, the heating temperature is 1120-1180 DEG C, and the soaking temperature is 1140-1200 DEG C; in the controlled rolling process, the finish rolling temperature is 900-960 DEG C, and the spinning temperature is 920-980 DEG C; in the compensation heating process, a coil runs on a Stelmor roller way for 14-18 minutes, the temperature is reduced to 650-700 DEG C, and the coil is collected; according to the waste heat isothermal heat treatment procedure, the coiled wire rod enters a 610-650 DEG C heat preservation gallery with temperature compensation, enters a slow cooling gallery after heat preservation is conducted for 2-3 h, is slowly cooled to 450-500 DEG C and is taken out of the slow cooling gallery to be naturally cooled to 200 DEG C or below, and packaging is conducted.

The invention relates to the technical field of copper plate strip machining, and provides an advanced copper plate strip continuous rolling technology which comprises the steps that S1, a copper ingot with the copper content of 99.9% or above is selected, and raw materials are obtained through saw cutting and surface polishing; s2, the treated copper ingot is heated in a heating furnace, and the internal temperature uniformity of the copper ingot is guaranteed; s3, a roughing mill is used for rolling the heated copper ingot, and rough rolling is conducted for 2-3 passes; s4, the copper strip subjected to rough rolling enters an intermediate rolling mill, and intermediate rolling passes are 3-5 times; s5, the copper plate strip subjected to intermediate rolling enters a finishing mill, and the finishing pass is 3-4 times; and S6, on-line cooling is conducted, specifically, the copper plate strip obtained after finish rolling enters an on-line cooling system immediately. Through early-stage accurate saw cutting and polishing treatment, the initial quality of the copper plate strip is guaranteed, smooth proceeding of subsequent rolling procedures is guaranteed, the multi-pass continuous rolling process of rough rolling, intermediate rolling and finish rolling is combined with online cooling, and through strict parameter control, the production efficiency is improved, the energy consumption is effectively reduced, and the production cost is reduced.

The present invention provides a mobile phone frame band forging and heating equipment, which belongs to the field of mobile phone frame production, including a feeder, a heating furnace and a heated transfer table, the feeder includes a cabinet assembly, a hood assembly is arranged on the top of the cabinet assembly, a three-color lamp is fixedly installed on the top of the outer surface of the hood assembly, a touch screen is fixedly installed on one side of the outer surface of the hood assembly, and a button plate is fixedly installed on one side of the outer surface of the hood assembly and located at the bottom of the touch screen. Through the coordinated use of the feeder, the heating furnace, the heated transfer table, the six-claw robot and the hydraulic press, the band heating forging of the mobile phone frame can be realized, the whole forging process is smooth and safe, and the heating forging efficiency of the mobile phone frame is improved, and a bottom transplanting assembly is arranged on the cabinet assembly to transfer the material tray, and the human only needs to take down the empty material tray and stack the full material tray on other material trays, which is simple to operate, has low requirements on the staff, and is more convenient to use.

The invention provides a heating furnace mechanism model verification method and system in industrial digital twin, and the method comprises the steps: S1, constructing a heating furnace two-dimensional unstable billet heat conduction model, and determining the initial conditions and boundary conditions of the heating furnace two-dimensional unstable billet heat conduction model; s2, based on the constructed heating furnace two-dimensional unstable billet heat conduction model and initial conditions and boundary conditions thereof, establishing an energy balance equation set by using a ternary method; wherein the energy balance equation set comprises a steel billet section energy balance equation, a furnace gas section energy balance equation and a furnace wall section energy balance equation; s3, determining a billet computational domain, and dividing billet computational domain grids; constructing a discrete billet internal heat conduction equation based on the divided billet computational domain grids; and S4, coupling and solving the internal heat conduction equation and the energy balance equation set of the discrete steel billet to obtain the steel billet temperature and the furnace gas temperature.

The invention relates to a vacuum electron beam welding method for an extra-thick double-sided stainless steel composite blank. The vacuum electron beam welding method comprises the steps that S1, a blank is prepared; s2, processing the surface of the base material carbon steel; s3, processing the surface of the composite stainless steel; s4, assembling and vacuum electron beam direct welding are carried out twice; s5, performing surface anti-oxidation spraying and packaging treatment on the double-sided composite blank after secondary welding; s6, heating the composite blank in a heating furnace, and rolling; and S7, the composite blank is rolled to the thickness required by the product according to the rolling ratio required by the finished product, and the stainless steel + carbon steel + stainless steel extra-thick double-sided stainless steel composite plate can be obtained after cooling. According to the method, the key technical bottleneck of producing the extra-thick double-sided stainless steel composite blank through the vacuum electron beam welding process is solved, particularly, the influence of vacuum electron beam welding magnetic blowing is eliminated, and powerful technical support can be provided for follow-up variety development and stable production.

The electric heating surrounding furnace comprises a furnace body, the furnace body comprises an upper cover and a lower cover, a panel is arranged above the upper cover in a covering mode, a heating furnace plate is arranged below the panel, the electric heating surrounding furnace further comprises a support, the upper portion of the upper cover is sleeved with the bottom of the support, and the support is provided with a containing hole corresponding to the heating furnace plate and used for containing a kettle. At least part of the outer ring of the containing hole of the support is provided with a supporting part used for containing food, and in the working state of the electric heating surrounding furnace, the kettle penetrates through the containing hole and is supported on the panel. According to the multifunctional electric heating surrounding furnace, the problem that the heating condition is poor due to the fact that a pot and food are heated together in an existing surrounding furnace is solved, the effects that the pot can be fully heated, and the food cannot be excessively heated are achieved, good food warming or heat preservation, tea and water boiling and the like can be achieved, and the multifunctional electric heating surrounding furnace is a multifunctional electric heating surrounding furnace.

The invention relates to the technical field of capacitor films. The invention discloses a preparation process of a multilayer polypropylene capacitance film, which comprises the following steps: S1, raw material preparation: preparing basic resin, a nano ceramic filler, a nucleating agent and an antioxidant into multilayer raw materials respectively; s2, fusing multiple layers of raw materials by an independent screw extruder, and compounding by a co-extrusion die head to form a film blank; and S3, carrying out air ring gradient cooling on the film blank. And S4, longitudinally and transversely stretching the film blank. And S5, performing heat setting in a segmented heating furnace, and performing corona treatment to improve surface energy. And S6, segmentally curing the moisture-proof coating by using an infrared oven. The multilayer heterostructure is adopted, the comprehensive performance of the capacitor film is improved through material matching, the dielectric constant, the breakdown strength and the moisture resistance are enhanced, and the problem of considering the dielectric property and the mechanical property is solved. The innovative process guarantees stable performance, is compatible with an existing production line, can realize large-scale production, meets the requirements of fields such as new energy and the like, and provides a feasible scheme for localization of high-performance capacitor films.

The invention relates to the technical field of steel production, and particularly discloses a bar line temperature control method which comprises the following steps: heating a steel billet: feeding the steel billet into a heating furnace for heating to reach a set rolling starting temperature; steel billet head and tail temperature difference control: installing a closed-loop control water tank system on a rolling line, and arranging a temperature detection device; precisely controlling the temperature of a rolled piece; developing a rolling line temperature control model; controlling red rust on the surface of the steel; designing a performance prediction model; temperature monitoring and adjustment: in the whole production process, establishing a rolling line PLC management and control platform; the rolled piece subjected to temperature control is conveyed to a cooling bed, the steel feeding temperature of the cooling bed is controlled to be 875 DEG C, and the up-down fluctuation is smaller than 5 DEG C; energy consumption in the production process is effectively reduced, closed-loop automatic adjustment of rolled piece temperature control is achieved, unmanned intervention can be achieved, the production efficiency and the automation level are improved, stable product performance is achieved, the surface of a finished product is free of red rust, and the quality and appearance of steel are improved.

The invention discloses a preparation method of a composite pipe for vibration and noise reduction, and relates to the technical field of metal material preparation, in order to solve the problems that an existing prepared composite pipe is poor in pressure resistance and vibration reduction and sound absorption capacities, the preparation method comprises the steps that an inner layer metal pipe, an outer layer metal pipe and foaming powder are integrally extruded and formed, and a pipe blank composite pipe blank is obtained; the pipe blank composite pipe blank is heated, rolling forming is conducted on the pipe blank composite pipe blank, the temperature of a contact interface between the structures of the pipe blank composite pipe blank is increased to a preset temperature, a metallurgical bonding target bonding interface is formed on the contact interface, and a target composite pipe blank is obtained; and the target composite pipe blank is placed in a heating furnace, the middle layer of the target composite pipe blank is foamed to form a foam metal layer, and the foam metal sandwich composite pipe is obtained. The preparation method provided by the invention is used for improving the compressive strength and the vibration reduction and sound absorption performance of the foam metal sandwich composite pipe.

The invention relates to the technical field of grain refinement processing, and discloses a grain refinement processing method of a titanium alloy pipe blank for spinning, which comprises the following specific process steps: S1, precise blank selection and pretreatment: selecting a titanium alloy cast ingot with low impurities and uniform components, deeply removing surface oxide skin and inclusions through a mechanical polishing and acid pickling composite means, and carrying out fine grinding on the titanium alloy cast ingot; the purity of the blank is ensured; s2, intelligently regulating and controlling multi-pass hot forging, specifically, an intelligent temperature control system is introduced, the temperature of a heating furnace is monitored in real time and precisely regulated and controlled, and it is ensured that the pipe blank is rapidly transferred to forging equipment when the pipe blank is heated to 1000 DEG C; s3, efficient channel extrusion co-processing is conducted, specifically, advanced equipment integrating heating and extrusion is adopted, and the pipe blank is seamlessly connected with the extrusion process under the precise heat preservation condition at the temperature of 925 DEG C; the corner of the die is optimized to 105 degrees, and the metal bears uniform and high-strength shearing force when flowing through the channel in cooperation with the parameter setting of the extrusion ratio of 5; s4, performing ultrasonic-rolling integrated processing; and S5, performing precise circulating heat treatment strengthening.

The invention discloses opaque quartz glass and a preparation method thereof. The preparation method comprises the steps that an induction heating furnace is used, the atmosphere in the furnace is a protective atmosphere which does not participate in the reaction, and the pressure of the protective atmosphere is 10000-90000 Pa; the quartz sand is placed in an induction heating furnace, the temperature is increased to 1400-1570 DEG C, and the quartz sand is preheated; raising the temperature to 1650-1710 DEG C at the speed of not more than 0.2 DEG C / s, so that the quartz sand is uniformly heated; raising the temperature to 1740-1900 DEG C at the speed of not less than 0.2 DEG C / s, so that the quartz sand reaches the melting temperature and is sintered; and finally, cooling at the speed of not more than 2 DEG C / s to obtain the opaque quartz glass. The density of the opaque quartz glass is 0.9-2.19 g / cm < 3 >, the bubble size is 1-300 [mu] m, the transmittance of the opaque quartz glass at the wave band of 380-3000 nm is less than 20% when the thickness is 2 mm, the transmittance of the opaque quartz glass at the wave band of 380-3000 nm is less than 3% when the thickness is 5 mm, and the hardness is 1000-6900 MPa.

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

The invention discloses a 1500MPa-grade titanium alloy plate and a preparation method thereof, and belongs to the technical field of titanium alloys. The 1500MPa-grade titanium alloy plate disclosed by the invention is prepared from the following components in percentage by mass: 3.0 to 5.0 percent of Al, 4.0 to 6.0 percent of Mo, 3.0 to 5.0 percent of V, 1.0 to 3.0 percent of Cr, 1.0 to 3.0 percent of Nb, 2.0 to 5.0 percent of Zr, 0.5 to 2.0 percent of Fe and the balance of Ti and inevitable impurities. The preparation method comprises the following steps that smelting raw materials are selected according to the components of the titanium alloy plate, then weighing, burdening and smelting are conducted, the smelting temperature is controlled to be 2300-2700 DEG C, an alloy ingot is obtained, the alloy ingot is heated and then subjected to rolling deformation, the titanium alloy plate is obtained, finally, the titanium alloy plate is placed in a heating furnace to be subjected to solution treatment and aging treatment, and the titanium alloy plate is obtained after air cooling. The strength of the prepared alloy plate can reach 1500 MPa or above, meanwhile, the ductility is kept at 5% or above, and the alloy plate has very good application prospects.

The invention discloses a wear-resistant steel ball production process and surface treatment equipment thereof, and belongs to the technical field of wear-resistant balls, and the wear-resistant steel ball production process comprises the following steps: step 1, weighing raw materials, smelting the raw materials, and casting into a continuous casting billet; (2) the continuous casting billet obtained in the step (1) is placed in a steel rolling heating furnace to be heated to 1120-1250 DEG C, heat preservation and thorough burning are conducted, and then the continuous casting billet enters a continuous rolling unit to be rolled into a round steel bar; 3, the round steel bar is sent to a heating furnace to be heated to 1030 DEG C to 1100 DEG C, heat preservation is conducted, the round steel bar is taken out of the furnace after thorough burning, then the round steel bar is rolled into steel balls on a ball rolling machine, and the rolling temperature is 940 DEG C to 960 DEG C; 4, the steel balls with the waste heat enter a quenching water tank along a roller way to be subjected to water-cooling quenching, and the water entering temperature of the steel balls during quenching is 830-860 DEG C; and 5, tempering is conducted after quenching of the steel ball, the tempering temperature ranges from 160 DEG C to 200 DEG C, surface treatment is conducted after cooling, and finally the high-abrasion-resistance steel ball is obtained. The wear-resistant steel ball is high in production efficiency and high in quality; and the steel balls are uniform, high in core hardness, low in breakage rate and excellent in wear resistance.

The invention discloses a preparation method of a battery aluminum foil and the battery aluminum foil. The preparation method comprises the following steps that S1, a raw material formula is prepared according to the following components in percentage by mass, and a casting process adopts a water-cooling semi-continuous casting method to prepare a cast ingot from the raw material formula; s2, the cast ingot is subjected to saw cutting and surface milling treatment; s3, the cast ingot subjected to saw cutting and surface milling treatment is put into a heating furnace to be subjected to homogenizing heat treatment; s4, the cast ingot is subjected to hot continuous rolling treatment; a hot-rolled coiled material is obtained; s5, the hot-rolled coiled material is subjected to cold rolling and intermediate annealing, and a cold-rolled blank is obtained; s6, the cold-rolled blank is cleaned, and a cold-rolled blank is obtained; and S7, the cold-rolled blank is subjected to foil rolling, and the battery aluminum foil with the thickness ranging from 0.01 mm to 0.015 mm is obtained. The prepared battery aluminum foil is excellent in comprehensive mechanical property, good in surface quality, low in pinhole density and low in belt breaking frequency.

The embodiment of the invention provides a method for solving surface scabbing of a prestressed PC (Poly Carbonate) rod, which comprises the following steps: after a square casting blank of the prestressed PC rod is output from a continuous casting machine, the square casting blank is fed into a spraying device for quenching, so that the surface temperature of the square casting blank is reduced to be below 500 DEG C; the quenched square casting blank is fed into a heating furnace to be subjected to temperature returning treatment; and the square casting blank subjected to temperature returning treatment is rolled. According to the technical scheme, the square casting blank is not naturally cooled off line like an existing cold conveying process, the square casting blank is quenched, the temperature of the square casting blank is rapidly cooled to the preset temperature, then rolling work is started through temperature returning, the whole process is conducted on line, the square casting blank does not need to be off line, and therefore production efficiency is greatly improved.

The present disclosure discloses a multi-sensor-based hot forming production system for an aluminum alloy sheet metal part and a control method thereof, and belongs to the field of aluminum alloy sheet metal forming manufacturing technology. A plurality of sensors are disposed in the hot forming production system, and closed-loop control of a whole process and adaptive production can be realized based on deformation properties, a microstructure evolution law, and a mechanical property change law of the aluminum alloy sheet metal part. The hot forming production system comprises a control system based on a multi-physical quantity model, an environmental heating furnace, an automated transfer and positioning device, a hot stamping and forming device, and an in-die aging device. By using the hot forming production system and the control method thereof, the product quality and the stability of the forming process can be effectively improved, and the adaptability of the process to form different types of alloys can be enhanced.

The utility model belongs to the technical field of preparation of carbon nanotubes, and particularly relates to a carbon nanotube discharging device. The discharging device is arranged at the discharging end of the tubular heating furnace and comprises a collecting bin, and a collecting cavity communicating with a discharging opening of the tubular heating furnace is formed in the collecting bin. An operation opening is formed in the collecting bin, a flexible pipeline is connected to the operation opening, and the operation opening is connected with the near end of the flexible pipeline in a sealed mode; at least one operating rod penetrates through the flexible pipeline and extends into the collecting cavity, and the far end of the flexible pipeline is in sealed connection with the operating rod; a discharging connector is arranged at the bottom of the collecting bin. The collecting bin arranged at the discharging end is beneficial to timely removal of flocculent single-walled carbon nanotubes formed in the growth process, furnace tube blockage is prevented, production continuity is guaranteed, and safety is improved. And a flexible pipeline and an operating rod are arranged on the collecting bin, so that an operator can collect the carbon nanotubes under the condition that the normal operation of the heating furnace is not influenced. The winding roller is beneficial to orderly collection of carbon nanotube floccules.