1541results about "Casting parameters measurement/indication devices" patented technology

The invention relates to the technical field of alloy die-casting, and particularly discloses an alloy die-casting temperature field control method and system capable of reducing hot cracks, temperature gradients of different areas of a die are adjusted in real time according to flowing and solidification characteristics of alloy liquid, so that the surface temperature distribution of the die is matched with the solidification rate of the alloy liquid, and the alloy die-casting temperature field is controlled. Utilizing a machine learning algorithm to predict a risk area where hot cracks are generated on the basis of historical data and real-time monitoring data, and dynamically adjusting the flow velocity of a cooling system, the heating power of a die or die-casting process parameters according to a prediction result; through dynamic temperature gradient control, intelligent prediction and feedback control, a cooling strategy, a stress release mechanism and a real-time monitoring and optimizing process, thermal stress concentration can be effectively reduced, the possibility of generation of thermal cracks is reduced, the yield of castings is improved, the cooling time of the castings can be shortened through the cooling strategy, and therefore the production efficiency is improved, and the production cost is reduced. And reworking and scrapping of castings are reduced.

The utility model relates to the field of ferrous metallurgy, in particular to a contact type device for measuring the surface temperature of a continuous casting billet, which comprises two bottom plates, stabilizing frames are arranged on the outer walls of the tops of the bottom plates, supporting frames are arranged on the outer walls of the tops of the bottom plates, and lifting screw rods are rotatably connected between the inner walls of the supporting frames and the bottom plates. The outer wall of the lifting screw is in threaded connection with an adjusting structure, and a contact assembly is arranged at the top of the adjusting structure. The adjusting structure comprises a mounting frame, an adjusting groove formed in the center of one end of the outer wall of the top of the mounting frame, and an adjusting screw rotationally connected into the adjusting groove. The contact assembly comprises a telescopic pipe and a sliding protrusion welded to one end of the outer wall of the bottom of the telescopic pipe. The lifting screw rod rotates to drive the mounting frame to move up and down in the supporting frame, the adjusting screw rod drives the telescopic pipe to move left and right on the outer wall of the mounting frame, adjustment is convenient, the temperature detection position is convenient to adjust, and the temperature detection accuracy is guaranteed.

The invention discloses a casting shape / property regulation and control device and method based on a casting mold temperature control technology, and relates to the technical field of intelligent casting. The invention aims to solve the problems of uncontrollable limitation of a traditional casting solidification control technology in a casting solidification process and low yield of a thin-wall casting process. According to the casting shape regulation and control technology based on the casting mold temperature control technology, the casting mold temperature field is controlled before casting mold filling, and mold filling of a complex thin-wall casting is facilitated; the casting solidification process is controlled through the cooling medium, the mechanical property of the casting is improved, and the casting quality is improved. The invention can obtain the casting shape / property regulation and control device and the regulation and control method based on the casting mold temperature control technology.

The invention relates to the technical field of metal casting, in particular to a well lid casting rapid demolding device which comprises a casting body, a demolding assembly is arranged in an inner cavity of the casting body, a lower mold cavity is formed in the upper surface of the casting body, a hydraulic cylinder is fixedly installed on the inner wall of the casting body, and a piston rod is slidably connected to an inner cavity of the hydraulic cylinder. Automatic demolding is achieved through the demolding assembly, the demolding mechanism ejects a workpiece through flexible force, the situation that the workpiece or a mold is damaged due to ejection of the demolding mechanism with too high rigidity or manual beating or jolting demolding is prevented, meanwhile, the ejection height of the workpiece during demolding can be adjusted, and in addition, whether the workpiece is evenly stressed or not during demolding can be detected; the appearance attractiveness of the outer surface of the well lid is guaranteed, deformation is prevented, the durability and the bearing capacity of the well lid are improved, the discharging mode can be switched through the discharging assembly, quantitative discharging is adopted when casting of raw materials is about to be finished, and the proper amount of the casting raw materials is guaranteed.

The invention belongs to but is not limited to the technical field of low-pressure casting processes, and discloses an intelligent temperature control system and method for a casting system, and integrated sensing modules are distributed according to feature areas of a casting mold and are used for monitoring temperature changes of different positions in the mold in real time; the data acquisition and processing module receives the data from the integrated sensing module, and preprocesses and stores the data; the central control module receives data provided by the data acquisition and processing module, and dynamically adjusts casting equipment and a temperature intelligent control system execution module according to preset casting process parameters and real-time data; and the execution module comprises a heating device and a cooling device and is used for adjusting process parameters of a heating channel and process parameters of a cooling channel according to an instruction of the central control system and intelligently regulating and controlling the temperature of the mold. According to the method, the temperature control accuracy can be improved, the temperature can be adjusted in time, and the purposes of optimizing the casting process, reducing defects and ensuring high-quality manufacturing of the aluminum alloy hub are achieved.

The invention discloses an air curtain laser failure prevention device for an aluminum-lithium alloy, and relates to the technical field of aluminum-lithium alloy ingots. The air curtain laser failure prevention device comprises a glass sheet located right in front of the laser range finder, a glass upper cover plate arranged on the side face, close to the laser range finder, of the glass sheet, a glass lower cover plate arranged on the side face, away from the laser range finder, of the glass sheet and a ventilation pipeline arranged on the side portion of the glass lower cover plate, and the ventilation pipeline is used for outputting inert gas. The side face, away from the laser range finder, of the glass sheet is purged, and an inert gas protection layer is formed. The inert gas is introduced into the ventilation pipeline at one side of the glass lower cover plate below the laser irradiation glass, and the lower part of the glass sheet is continuously purged, so that an inert gas protection air curtain is formed below the glass sheet, dust and the like can be effectively prevented from being attached to the upper glass sheet, the glass is kept clean, the laser failure is prevented, and the service life of the glass sheet is prolonged. And meanwhile, aluminum alloy oxidation of the launder can be reduced or even avoided through introduction of inert gas, and the ingot casting efficiency is improved.

The present invention relates to a metal semi-solid pulping cooling device and pulping equipment, including a rotating mechanism, two or more stirring mechanisms, a spoon, a cooling mechanism, a heat dissipation mechanism and a controller. The technical solution of the present application sets a stirring and quenching rod with a solid structure and uses a low-temperature metal alloy in a molten state as the heat transfer medium of the stirring and quenching rod that needs to be cooled, and utilizes the high thermal conductivity and high boiling point of the low-temperature metal alloy to quickly and reliably reduce the stirring and quenching rod to the initial temperature. The stirring and quenching rod can have a lower initial temperature and have a better heat transfer effect on the high-temperature metal liquid, which helps to improve the pulping quality and shorten the pulping time to increase production capacity. Compared with the prior art, the heat dissipation mechanism of the coolant and the rotating mechanism are separately set, which does not affect the life of the rotating mechanism, and even if the circulating pump is abnormal, it is not easily affected by the temperature to cause the risk of boiling and cracking of the stirring rod.

The invention discloses a rapid development method and system for a high-performance nodular cast iron material based on electronic metallurgy, and relates to the technical field of electronic metallurgy, and the rapid development method comprises the steps that a high-performance nodular cast iron raw material is smelted through multi-stage electron beams, and uniform molten metal is obtained; monitoring the chemical components and temperature change of the molten metal in real time, and dynamically adjusting the addition of the spheroidizing agent; the pouring speed and pressure of the molten metal subjected to spheroidizing treatment are intelligently controlled, and casting pouring is conducted; the internal stress change of the casting is monitored in real time through an embedded stress sensor, and the casting cooling process is adjusted; the cooled casting is subjected to surface treatment, heat treatment and machining; component detection and performance testing are conducted on the casting obtained after treatment and machining are completed; through the multi-stage electron beam melting technology, accurate control over the temperature and chemical components of the molten metal is achieved, and the uniformity and stability of the molten metal are ensured.

The die-casting die multi-channel cooling system based on self-feedback temperature control comprises a lower die base, a die cavity is formed in the upper surface of the lower die base, four cooling assemblies are symmetrically installed in the lower die base, and the four cooling assemblies are symmetrically arranged outside the die cavity; the cooling assembly comprises a heat exchange pipe, a first electromagnetic valve, a temperature measurement node seat, a shunt pipe, a third electromagnetic valve and a branch pipeline; the heat exchange tube is bent in a continuous S shape. When the cooling liquid reaches the first temperature measurement node seat, the temperature sensor monitors the temperature of the cooling liquid in the heat exchange tube at the node position, and when the temperature exceeds a rated value, the first electromagnetic valve at the node position is closed, the second electromagnetic valve is opened, and the third electromagnetic valve is opened; and at the moment, the cooling liquid with the temperature exceeding the rated value in the heat exchange pipe sequentially flows into the discharging pipe and the collecting pipe and then is discharged from the liquid discharging pipe, and new cooling liquid flows into the branch pipeline from the flow dividing pipe and then continuously flows downwards after flowing into the heat exchange pipe.

The invention discloses a roll gap measuring instrument and an integrated continuous casting machine online roll gap measuring device, and aims to improve the precision of roll gap measurement and the convenience of operation. The roll gap measuring instrument comprises a mounting frame and a measuring assembly. The measuring assembly comprises a swing arm, a first elastic piece, a shifting block, a detection piece and a first detector. The swing arm is rotationally connected with the mounting frame, the shifting block is connected with the swing arm, and meshing teeth are arranged on the shifting block. The first detector is installed on the installation frame, the detection piece is in sliding fit with the first detector, and a rack meshed with the meshing teeth is arranged on the detection piece. The first elastic piece is used for driving the detection piece to return to the initial position. When the swing arm drives the shifting block to rotate, the shifting block drives the detection piece to move, the swing amplitude of the swing arm is calculated according to the moving distance of the detection piece, and then the roller gap between the rollers to be measured is obtained. According to the roll gap measuring instrument, through cooperation of the swing arm, the shifting block, the detection piece and the first detector, high-precision measurement of the roll gap is achieved, and the accuracy and reliability of a measurement result are improved.

The invention relates to the technical field of intelligent production of copper pipes, in particular to a water cooling system for horizontal continuous casting of an internal-thread copper pipe and a control method, and the water cooling system comprises an area division module which is used for carrying out function division on the water cooling system to generate a plurality of cooling areas; the temperature monitoring configuration module is used for setting a plurality of temperature monitoring point positions according to the plurality of cooling areas; the data acquisition module is used for acquiring the pulling speed of the copper pipe and the real-time temperature of a plurality of temperature monitoring points in real time; the fluctuation analysis module is used for carrying out comprehensive fluctuation analysis on the plurality of real-time temperatures to obtain temperature fluctuation characteristics; the method can adapt to the pulling speed change, process constraints are dynamically fused, and regional accurate regulation and control are achieved.

An aluminum wheel low-pressure casting mold filling process control device belongs to the technical field of automobile hub low-pressure casting and is provided with a bottom mold, a top mold and a side mold, the top mold and the bottom mold are used in cooperation to form the upper contour of a casting, and a plurality of temperature monitoring points, pressure monitoring points and a cooling system are arranged in the upper contour. The side die is used in cooperation with the bottom die and the top die, a plurality of temperature monitoring points, pressure monitoring points and a cooling system are arranged on the side wall of the side die, and the temperature monitoring points, the pressure monitoring points and the cooling system are all electrically connected with a control system of the aluminum wheel low-pressure casting mold filling process control device. The temperature monitoring points and the pressure monitoring points are arranged, temperature distribution, pressure changes and metal flowing behaviors in the mold filling process are monitored in real time in combination with the data acquisition and analysis system, the mold active exhaust technology is further combined, the mold filling stability and consistency are ensured, and therefore the casting quality is remarkably improved, and the defect rate is reduced.

Provided are intelligent temperature control method and system for die-casting die. Method includes setting target number of groups of temperature control regions and configuring initial temperature determination rule and initial temperature control strategy for each temperature control region; obtaining front-side thermal image of die using infrared camera mounted on both sides of spraying manipulator, and matching the same with CAD drawing of the die to obtain CAD thermal map of die; determining monitoring region on surface of die, and classifying monitoring regions into target number of groups of temperature control regions based on expected temperature requirement of die; calculating temperature value and determining temperature state of each monitoring region based on initial temperature determination rule of each temperature control region and temperature value of each monitoring region, and adjusting temperature of each monitoring region based on initial temperature control strategy of each temperature control region.

The invention discloses an electric engine assembly integral forming process based on precision integral casting, which comprises the following steps: designing a split type precision mold through computer aided design software, and carrying out nitriding treatment to improve the performance; selecting a specific aluminum alloy raw material, performing vacuum induction melting and refining, and injecting the aluminum alloy raw material into a preheated and sprayed mold cavity in a low-pressure casting manner; and demolding after air cooling and water cooling are combined, then after-treatment procedures such as deburring and heat treatment are conducted, and finally detection and assembly are conducted. A conformal cooling water channel design and an ultrasonic-assisted smelting technology are adopted in the process innovation, and the casting process is monitored in real time. According to the process, manufacturing procedures are reduced, compared with a traditional mode, the production efficiency is improved by 30%-50%, the cost is reduced by 20%-30%, the assembling problem is effectively avoided, the sealing performance and reliability of the electric engine are improved, the service life of the electric engine is prolonged, high integration is achieved, and the modern industrial requirement is met.

The invention relates to the technical field of gas supply, and discloses a steel ladle bottom blowing slow-release gas supply structure and method. The control module is arranged on the steel ladle main body and is used for being responsible for automatic control including sensor data monitoring and valve opening adjusting; the sensor module is arranged on the steel ladle body and used for monitoring temperature, pressure and gas flow parameters in real time and feeding data back to the control module; the gas supply module is used for conveying through high-pressure air or other inert gases and providing a stable gas source for the bottom blowing device of the steel ladle main body; and the slow release device is arranged at the bottom of the steel ladle main body and is used for slowly releasing the supplied gas so as to ensure the uniform distribution of the supplied gas. According to the steel ladle bottom blowing slow-release gas supply structure and method, the efficiency and safety in the smelting process are improved, the product quality is improved, resource saving and intelligent management are achieved, and important support is provided for development of the modern steel and iron manufacturing industry.

The invention relates to the technical field of detection systems, in particular to an intelligent detection system and method for a casting cooling system, and the system comprises a data collection unit which collects a data set in the working process of the casting cooling system, detection data of the stability of the cooling system and detection data of cooling liquid in the cooling system are obtained; the data integration unit is used for integrating the collected data groups according to a time sequence and forming an information packet; the information transmission unit is used for converting information in the data packet into a digital signal and transmitting the digital signal; through intelligent and automatic detection and control means, the defects in detection and control of a traditional cooling system are effectively overcome, the stability, flexibility and adaptability of the cooling system are improved, and then the quality and production efficiency of castings are improved.

The invention belongs to the field of rotor silicon steel sheet aluminum casting production, and particularly relates to an automatic production line and a production method for rotor silicon steel sheet aluminum casting. A rotor silicon steel sheet stacking device, a middle mold conveying device, a first suction cup device, an aluminum casting room, a second suction cup device, a first clamping device and a second clamping device are sequentially arranged. Wherein the rotor silicon steel sheet stacking device is used for placing rotor silicon steel sheets on a silicon steel sheet stacking tray on the lower die conveying device; the first sucker device installs the upper die on the lower die and the rotor silicon steel sheet, and the second sucker device is used for dismounting the upper die; the first clamping device is used for disassembling the middle mold; and the second clamping device is used for moving the cast-aluminum rotors to the conveyor belt on one side of the rotor stacking device. The mold can be recycled, meanwhile, automation of the whole production line is achieved, manual intervention can be remarkably reduced, and the intelligent level of the production process is improved.

The invention provides a casting and forging composite forming method and die for an aluminum alloy structural part. A certain downward pressing amount is reserved for a male die; the cavity is filled with the metal melt at a certain speed under the pushing of the injection punch; increasing the pressure of the punch and maintaining the pressure (indirect extrusion casting); the pressurizing pin is started to carry out local pressurizing feeding; and the male die moves downwards by a certain distance, high pressure is applied, and closed die forging is conducted on the casting in the semi-solidified state. The mold structure comprises a shell part, a forming part, a flash storage and exhaust part, a pouring system, a temperature adjusting and monitoring system and a demolding system. The extrusion casting process and the closed die forging process are integrated in one set of die and are achieved through the extrusion casting machine, the performance of a final product is better than that of an extrusion casting method, the forming process is easier to achieve compared with forging, meanwhile, the production cost is lower, and the method is particularly suitable for forming machining of high-performance safety parts, structural parts and complex parts.

A method for predicting the mechanical properties of a casting part based on the flow distances of an aluminum alloy melt, a method for designing a casting die for mega casting, and an aluminum alloy casting part produced through the casting die thus designed. By applying the method, the mechanical properties of the large components produced by mega casting within a specified process parameter window, especially at a specified injection speed, can be predicted and controlled, thereby the automation in automobile manufacture is improved, and the design and properties of the mega-casting products are optimized.

The invention provides an aluminum alloy casting iron removal system and method.The aluminum alloy casting iron removal system comprises a smelting furnace used for smelting molten aluminum, and the smelting furnace is provided with a discharging opening; the conveying belt is arranged corresponding to the discharging opening, a plurality of crystallizers are arranged on the surface of the conveying belt in the conveying direction, and the crystallizers are used for receiving the molten aluminum discharged through the discharging opening; the cooling device is arranged at the tail end, in the conveying direction, of the conveying belt, the cooling device is used for cooling the crystallizer located at the tail end, and molten aluminum in the crystallizer can be cooled by the cooling device to form cast ingots; and the cutting device is arranged at the downstream of the conveying belt and is used for cutting the iron-rich phase deposition layer in the cast ingot. By means of the technical scheme, the problem that in the prior art, iron elements are difficult to separate from molten aluminum can be solved.

The invention belongs to the field of dies, and particularly relates to a cam cover die-casting die with a spiral cooling structure, a die table mechanism comprises a lower die table and an upper die table which are combined, and a lower die core and an upper die core which are matched with each other are arranged in the lower die table and the upper die table; the pouring mechanism comprises a pouring end seat arranged on the upper mold table, a pouring channel penetrating through the upper mold core is formed in the pouring end seat, and the other end of the pouring channel penetrates into a closed cavity of the lower mold core and the upper mold core; the track mechanism comprises a track table arranged on the outer side of the cavity; the multi-layer structure of the spiral pipe is in direct contact with the outer wall of the cavity, the spiral flowing path of a cooling medium is combined, the heat exchange area and cooling uniformity are increased, the casting deformation risk is reduced, a temperature sensing end base integrated temperature sensor monitors the temperature of the cavity in real time, and the flow of the cooling medium is dynamically adjusted in cooperation with a deformation piece driven by an air bag piece. And intelligent control of slow-cooling anti-cracking in a high-temperature area and rapid-cooling shaping in a low-temperature area is realized.

The invention discloses a cooling effect stability evaluation method for an aluminum alloy wheel hub low-pressure casting cooling system, and relates to the technical field of automobile wheel hub low-pressure casting. Comprises: selecting a mold object; arranging a thermocouple, and collecting temperature data; changing the initial temperature of the temperature measuring point of the thermocouple, and further acquiring real-time temperature data; feature temperature data are extracted, and linear regression of initial temperature-feature temperature values is carried out; and carrying out temperature data fluctuation analysis, and quantitatively measuring the cooling effect stability of the cooling system according to the maximum value and minimum value indexes of the discrete point deviation fitting curve. The stability of the cooling effect of the cooling system can be visually reflected, the problem that testing cannot be achieved under the condition that the initial temperature of the mold is consistent is solved, and by analyzing the relation between the initial mold temperature and the characteristic temperature value and selecting the temperature value on the temperature curve before mold opening as the characteristic temperature value, the testing accuracy is improved. The complexity of curve analysis is avoided, and the method is worthy of industrial popularization and application.

The invention relates to the field of precision casting, and discloses a precision casting process for a stainless steel impeller for nuclear power, which comprises the following steps of: S1, pressing a wax mold by using an investment casting process, and connecting the wax mold into a tree shape by using a wax rod; s2, the surface of the wax mold is coated with a refractory material, dewaxing is conducted through dewaxing equipment after drying, a hollow shell is obtained, and then high-temperature roasting is conducted; s3, selecting duplex stainless steel to be smelted in an electric furnace, heating molten steel to a preset pouring temperature, and pouring the molten steel into the shell from the bottom or the side; s4, the shell is removed after being naturally cooled, and solution treatment is conducted on the impeller; s5, carrying out sand blasting, shot blasting and sand cleaning, and carrying out nondestructive inspection; wherein dewaxing equipment used in the step S2 comprises a tank body, a rotatable tray is arranged in the tank body, and a plurality of adjustable fixing clamps are arranged on the tray to meet the fixing requirements of different shells; the top of the tank body is provided with a feed port, a discharge port and an automatic sealing door, and the bottom is connected with a wax liquid collecting tank and is internally provided with a liquid level sensor; the inner wall of the tank body is provided with a heating cavity for containing heating elements, and the outer wall is wrapped with heat insulation materials.

The invention relates to a system and a method capable of measuring the size of a casting blank on line, and the method comprises the steps: installing a photoelectric trigger and range finders on a continuous casting ejection roller way, respectively measuring the distances from the two range finders to narrow surfaces at two sides by using the two range finders which work synchronously at the same frequency, judging the reasonability of a width value, and storing width data at a computer end. Then width data in the length direction and the thickness reverse direction of the casting blank are measured through movement of the distance measuring instrument, the length and width sizes of the casting blank are calculated through the measured reasonable width value display range or the position change of the distance measuring instrument, and the width, the length, the thickness and curve data of the width, the length and the thickness are displayed on a computer end after numerical value correction. According to the invention, the continuous measurement of the casting blank size and the effective storage of the measurement data can be realized, the measurement size types are various, the measurement time is short, the precision is high, the manual labor intensity can be reduced, and the safety risk factors are reduced.

The invention discloses a casting shrinkage-proof device for hot-working casting, and belongs to the technical field of hot-working casting, by arranging a heating mechanism and a knocking mechanism, through vibration and disturbance generated by knocking, the static state of 21800 austenitic stainless steel metal liquid in a casting mold can be broken, and the shrinkage-proof performance of the casting is improved. According to the technical scheme, small bubbles originally attached to the interior or the wall face of liquid are disturbed and start to float upwards, meanwhile, vibration can improve the liquidity of the metal liquid, crank knocking is started in the process that the metal liquid is injected into a casting mold, knocking is still continuously kept after the metal liquid is injected, knocking power is from pushing of steam, and therefore the effect of improving the fluidity of the metal liquid is achieved. No other external force is needed in the process, and the knocking frequency is gradually reduced until the knocking frequency is completely stopped along with cooling of metal, weakening of power generated by steam and reduction of the casting mold temperature, so that the purpose of preventing the stability of metal liquid during condensation from being damaged by excessive knocking is achieved.

The invention relates to a continuous casting soft reduction calibration and self-verification tool and method, and belongs to the field of continuous casting withdrawal and straightening machine roll gap calibration and verification. The roller spacing of the withdrawal and straightening machine can be quickly and accurately calibrated, and the accuracy of the roller spacing can be verified, so that calibration and self-verification can be completed within limited time. The calibration and verification tool is a chained dummy bar at least comprising two standard blocks, and the construction mode of the calibration and verification tool is that the standard block A is located at the foremost end of the dummy bar, the standard block B is arranged behind the standard block A, the standard block A is used for calibrating the roller spacing during calibration, and the standard block B is used for verifying the calibration accuracy. According to the continuous casting soft reduction calibration and self-checking tool and method, the two standard blocks are used for calibrating and checking the roller spacing of the withdrawal and straightening machine, calibration and checking are completed at a time, and the defect that soft reduction process execution deviation is caused by inaccurate calibration due to the influences of the clearance of the withdrawal and straightening machine, the straightening area, errors in the calibration process and the like is overcome.

The invention relates to the technical field of steelmaking, in particular to a continuous casting machine supporting roller rotation detection device and method. In the embodiment of the invention, the rotation detection device for the supporting roller of the continuous casting machine comprises a bracket, a contact wheel and a torque sensor. The contact wheel is rotatably mounted on the support, and the torque sensor is connected to the contact wheel. Under the condition that the contact wheel moves relative to the supporting roller and makes contact with the supporting roller, the torque sensor is used for detecting a torque data set of the contact wheel so as to judge whether the supporting roller rotates or not according to the torque data set. According to the continuous casting machine back-up roll rotation detection device and detection method, under the condition that the contact wheel moves relative to the back-up roll and makes contact with the back-up roll, the torque sensor is used for detecting the torque data set of the contact wheel, whether the back-up roll rotates or not is judged according to the torque data set, and therefore the rotation state of the back-up roll is obtained; therefore, the fan-shaped sections can be selectively replaced according to the rotating state of the supporting roller, regular replacement is not needed, the production organization time is shortened, the yield is guaranteed, and economic losses are reduced.

The invention discloses a method and a device for identifying molten steel at the tail end of a long nozzle, which are used for identifying the molten steel so as to judge the starting time of an automatic control program of the liquid level of an intermediate tank: in the production process, shooting and uploading an image at the position of the long nozzle above the intermediate tank in real time, detecting whether the long nozzle exists in the image by using a deep learning target detection algorithm, and after it is detected that the long nozzle exists in the image, a molten steel area is extracted from the tail end of the long nozzle in the image through the image processing technology, whether the molten steel flows out normally or not is recognized, and when it is recognized that the molten steel flows out normally, an intermediate tank liquid level automatic control program is started. The method not only can automatically judge and start the automatic control of the liquid level of the intermediate tank, but also can reduce the working intensity of operators.

The invention discloses a roll gap measuring instrument and a split type continuous casting machine online roll gap measuring device. The technical problem that an existing roll gap measuring instrument can only move in the single direction for measurement is solved. The roll gap measuring instrument comprises a box body, a roll gap detection structure and a roll gap measuring structure. The roll gap detection structure comprises a swing arm, a first elastic piece and a shifting block. The first end of the swing arm extends out of the box body, the shifting block is installed at the second end of the swing arm, and the first elastic piece is used for driving the swing arm to rotate to the initial position relative to the box body. The roll gap measuring structure comprises a first detector and a detection piece. The detection piece is in sliding fit with the first detector, and when the swing arm drives the shifting block to swing, the shifting block drives the detection piece to move. According to the roll gap measuring instrument disclosed by the invention, the compact box body and the innovative roll gap detection structure are designed, so that the measuring instrument can greatly reduce the equipment size while keeping the measuring precision, is convenient to carry and mount, and is particularly suitable for a working environment with limited space.

The invention relates to the field of industrial data acquisition control, and provides a semi-solid magnesium alloy injection casting temperature feedback control method and equipment, and the method comprises the steps: monitoring and obtaining sensor temperature data at a plurality of moments in a semi-solid magnesium alloy injection casting process; acquiring a plurality of detection time periods and predicted temperature data thereof; analyzing the difference and variation trend between the sensor temperature data and the predicted temperature data in each detection time period, and quantifying the temperature deviation factor of each detection time period; based on the correlation of the change trend between the sensor temperature data and the predicted temperature data in each detection time period, the change of the correlation under the time sequence change of the detection time period is analyzed, and the temperature deviation accuracy of each detection time period is obtained; and correcting the sensor temperature data at each moment to obtain melt temperature data at each moment, and performing feedback control. The invention aims to solve the problem that the overall temperature feedback control effect is influenced by local temperature change in the magnesium alloy injection casting process.