238 results about "Rolling speed" patented technology

The invention discloses a rolled piece temperature control system based on a steel rolling process, which relates to the technical field of steel rolling and comprises a detection module, a control module, an execution module and a cooling module, the detection module comprises infrared thermometer arrays, an ultrasonic thickness gauge, an electromagnetic flowmeter, a pressure transmitter and a thermal resistance thermometer, and the infrared thermometer arrays are used for being arranged in front of and behind a cooling section and respectively collecting initial temperatures before entering a cooling system. Through the self-adaptive PID algorithm, the finite difference heat conduction model and the Smith pre-estimation compensation strategy are combined, the problem of control delay caused by the large lag characteristic in the cooling process is solved, control parameters can be dynamically adjusted according to the rolling speed, the steel grade characteristic and the like, temperature adjustment better fits the actual working condition, and the control precision is improved. The phenomenon of supercooling or insufficient cooling in a traditional control mode is fundamentally avoided, and the uniformity and stability of the performance of rolled pieces are guaranteed.

The invention relates to a production method of thin cold-rolled strip steel for food cans, which comprises the following steps of: smelting molten steel according to preset smelting components, and continuously casting after smelting; the casting blank subjected to continuous casting enters a hot rolling procedure, the final rolling temperature of the casting blank corresponds to the carbon content, and finally hot-rolled strip steel with the thickness of 2.0-2.3 mm is obtained; hot-rolled strip steel enters a rolling procedure after being subjected to acid rolling uncoiling, a five-rack rolling mode is adopted for acid rolling, and the total reduction rate is controlled to be 91%; coiling and then entering a continuous annealing process; in the annealing furnace, the annealing temperature and the strip steel speed are in a proportional relation, and finally finished strip steel is obtained. The thin-gauge strip steel can be produced at a high cold rolling speed, meanwhile, vibration of the rolling mill is effectively relieved, the production cost is reduced, and the product quality is not affected.

The invention discloses a rolling force prediction method based on a deformation resistance and rolling force coupling model of a tandem cold mill, which comprises the following steps of: establishing a deformation resistance model of the tandem cold mill for realizing prediction of rolling speed on deformation resistance; a total rolling force model of the cold continuous rolling mill is established and used for predicting the total rolling force in the cold continuous rolling process; establishing a deformation resistance and rolling force coupling model parameter data set; the deformation resistance model of the cold tandem mill is coupled with the total rolling force model of the cold tandem mill, and a deformation resistance rolling force coupling model based on the length of the deformation area is obtained; based on a training set in the parameter data set of the deformation resistance rolling force coupling model, parameter optimization is conducted on the deformation resistance rolling force coupling model based on a differential evolution algorithm, training of the deformation resistance rolling force coupling model is achieved, and the trained deformation resistance rolling force coupling model is obtained; and inputting the test set into the trained deformation resistance and rolling force coupling model to predict the rolling force of the cold tandem mill.

The invention provides an aluminum alloy round aluminum rod production process optimization control method, and relates to the technical field of control optimization, and the method comprises the steps: obtaining initial process parameters of each production link, and constructing a weight matrix; collecting dynamic output characteristics and environment interference parameters of each production link in real time; constructing a smelting-casting correction model, and predicting and outputting a casting temperature correction parameter and a casting speed correction parameter; constructing a casting-rolling correction model, and predicting and outputting a rolling temperature correction parameter and a rolling speed correction parameter; constructing a rolling-heat treatment correction model, and predicting and outputting a heat treatment temperature correction parameter and a heat preservation time correction parameter; and on the basis of the correction parameters output by all the models, progressive control parameter correction is carried out on casting, rolling and heat treatment links in combination with a preset fluctuation early warning threshold value, and the weight matrix is dynamically updated according to the correction effect. The technical problems that in the prior art, in aluminum alloy round aluminum rod production, product performance fluctuation is large, and the percent of pass is low are solved.

The invention discloses a roller grinding management method based on the surface quality of a copper plate strip, and aims to solve the problems that existing roller grinding depends on experience, positioning is inaccurate, and grinding is excessive or insufficient. The method comprises the following steps: collecting waveform data of copper print defects and flatness on the surface of a copper plate strip, and performing timestamp synchronous calibration with a rolling speed and a coil length counting signal of a rolling mill; constructing a roller damage reverse diagnosis mechanism, calculating a damage angle in combination with a copper printing coordinate, identifying a damage type, and calculating a wear depth; differentiated grinding work orders are generated according to different damage types, and high-precision positioning grinding is executed; and after returning to the production line, carrying out on-line real-time monitoring and off-line sample rechecking on the original damaged position, dynamically adjusting parameters and judging the grinding fit state. Precision, differentiation and closed-loop management of roller grinding are achieved, the grinding efficiency is effectively improved, the service life of the roller is effectively prolonged, the surface quality of a copper plate strip is remarkably improved, and the defect rate is reduced.

The invention relates to an aluminum plate casting and rolling control method and system, and the method comprises the steps: collecting real-time technological parameters, including molten aluminum temperature, aluminum plate thickness, rolling speed, rolling pressure, cooling speed and surface quality information, in an aluminum plate casting and rolling process, and predicting aluminum plate temperature distribution, stress strain, thickness change and potential defects based on thermodynamics and mechanical models; the casting speed, the rolling speed, the rolling pressure and the cooling condition of the molten aluminum are dynamically adjusted, closed-loop control is achieved, the system comprises a data acquisition module, a data processing and analysis module, a control and execution module and a man-machine interaction and visualization module, and the system supports automatic correction of thickness deviation and surface defects, abnormal alarm and historical data analysis. The method adopts model predictive control, an artificial intelligence algorithm or a hybrid optimization algorithm to realize adaptive control. The method has the advantages that the thickness uniformity and the surface quality are optimized, the production efficiency and reliability are improved, and the safe, intelligent and efficient operation effect in the aluminum plate casting and rolling process is achieved.

The application relates to a battery foil and a preparation method thereof, a battery and a power utilization device. The preparation method of the battery foil comprises the following steps: rough rolling treatment, medium rolling treatment and fine rolling treatment of a battery foil blank by using rolling oil in sequence; the rolling oil comprises base oil and rolling additives, the oil film strength alpha of the rolling oil is greater than 280 N, and the friction coefficient mu of the oil film is less than 0.05; the temperature of the rough rolling treatment is T1, the temperature of the medium rolling treatment is T2, and the temperature of the fine rolling treatment is T3, T1 < T2 < T3; the processing rate of the rough rolling treatment is S1, the processing rate of the medium rolling treatment is S2, and the processing rate of the fine rolling treatment is S3, S1 > S2 > S3; the rolling speed of the rough rolling treatment is V1, the rolling speed of the medium rolling treatment is V2, and the rolling speed of the fine rolling treatment is V3, V1 > V2 > V3. The preparation method of the battery foil can effectively improve the adhesion of the battery foil.

This invention belongs to the field of steel rolling technology, specifically relating to a method for preventing cold bending cracks in hot-rolled ribbed steel bars. This invention rapidly resolves cold bending cracks in steel bars caused by cold working stress at the bottom of the transverse ribs by limiting the angle of the transverse ribs during the steel bar die design stage, adjusting the rolling speed and temperature during the rolling process, and adjusting the roll cooling.

The invention belongs to the technical field of battery foil rolling detection, and particularly relates to a method for testing a battery foil by using double thickness gauges of an aluminum foil rolling mill, which comprises the following steps of: mounting a sensor assembly on the aluminum foil rolling mill, and acquiring roller rotating speed, rolling force and roller vibration frequency of the aluminum foil rolling mill in real time; and the calculation equipment carries out filtering processing on the original thickness data of the battery foil collected by the thickness gauge based on the roller rotating speed, the rolling pressure and the roller vibration frequency of the aluminum foil rolling mill, instantaneous fluctuation data are filtered, and infrared detectors are arranged on the two sides of a discharging port of the aluminum foil rolling mill. Filtering processing is carried out on thickness data of the battery foil by combining operation parameters of a rolling mill, interference data of vibration of the battery foil on thickness detection in the roller operation process is recognized and removed, and meanwhile detection and cleaning correction are carried out on surface impurities, so that the thickness of a battery foil body and the thickness of the impurities are accurately distinguished; the effect of eliminating false fluctuation and impurity interference is achieved, and the authenticity of thickness detection data is improved.

A method for manufacturing a pearlitic steel rail having high surface hardness, relating to the technical field of iron and steel smelting. The method comprises: feeding molten steel having undergone preliminary smelting into a ladle refining furnace, and adding an alloying element for deoxidization and alloying treatment to obtain refined molten steel, so as to further obtain a continuous casting billet; heating the continuous casting billet to a preset temperature by means of a heating furnace, and feeding the heated continuous casting billet into a rolling mill for multi-pass rolling comprising first-pass rolling and second-pass rolling, wherein during the first-pass rolling, the rolling speed is 5.0-7.5 s-1, and the rolling deformation should be 10-15%; after the first-pass rolling, the original austenite grain size is 85-115 μm; and the number of rolling passes is 9-13, and the total deformation is 85-95%; and gradually reducing the gap between rollers of the rolling mill to obtain steel rail blocks having desired specifications and shapes and performing on-line heat treatment and processing treatment on the steel rail blocks to obtain steel rails.

The utility model discloses a plate arc rolling machine, and relates to the technical field of gardening processing equipment, the plate arc rolling machine comprises a control cabinet, the control cabinet is located on one side of the plate arc rolling machine and is electrically connected with the plate arc rolling machine, the plate arc rolling machine further comprises a main body support, and the main body support is provided with a forming unit and a feeding limiting unit matched with the forming unit for use. The forming unit comprises a lifting assembly, an extrusion assembly and a power assembly, the power assembly is connected with the extrusion assembly, the extrusion assembly is connected with the lifting assembly, the lifting assembly ensures that an upper forming pressing wheel in the extrusion assembly is accurately matched with a rubber forming wheel, and the power assembly drives the forming assembly to extrude a plate; according to the device, the arc rolling speed and the pressure and the length of each section in the rolling process are controlled through the control cabinet, and the plates are pressed into different shapes through the arc rolling speed controlled by the control cabinet and the pressure and the length of each section in the rolling process.

The invention provides a rolling oil removing method for high-wetting-tension aluminum foil, which comprises the following steps: collecting a first Dalton value and a second Dalton value, the first Dalton value being the Dalton value of the aluminum foil before rolling, and the second Dalton value being the Dalton value of the aluminum foil after rolling; rolling data and cleaning data are determined according to the difference value of the first Darn value and the second Darn value, the rolling data are the rolling speed, the rolling force and the rolling oil flow of the rolling machine, and the cleaning data are the negative pressure purging data, the electrostatic adsorption data and the infrared volatilization data of the cleaning machine; the rolling machine is controlled to run according to the rolling data, the cleaning machine is controlled to run according to the cleaning data, and a closed-loop control system is formed to ensure that the wetting tension of the aluminum foil stably reaches the standard by measuring the difference between Darn values before and after rolling in real time and dynamically adjusting rolling and cleaning parameters.

The invention discloses a hot rolling process for reducing the earing rate of a 1-series aluminum alloy and a preparation method, and relates to the technical field of 1-series aluminum alloy machining, a 1-series aluminum alloy cast ingot is heated to 500-510 DEG C at the speed of 60 DEG C per hour, heat preservation is conducted for 2-5 h, and a soaking cast ingot is obtained; the soaking cast ingot is subjected to a first hot rolling stage, the initial rolling temperature of the first hot rolling stage is 505 DEG C, the pass is 24, the rolling speed is 170-180 m / min, the total reduction rate is 96.6-96.7%, and an intermediate plate is obtained; the middle plate is subjected to a second hot rolling stage, the pass number of the second hot rolling stage is three, the rolling speed is 170-180 m / min, the total reduction rate is 74-76%, the finish rolling temperature is 280-290 DEG C, the target thickness is 7.0-8.5 mm, and the aluminum plate is obtained. The orientation and texture of the aluminum alloy are regulated and controlled, and then the earing rate of the aluminum alloy is reduced.

The application discloses a preparation method of a 1.5mm hot-rolled 800MPa-grade weather-resistant photovoltaic support steel in the field of hot-rolling steel production, and the method comprises the following steps: adopting a steel grade component with 800MPa-grade weather resistance, controlling the thickness and length of the steel casting blank; adopting a hot feeding and hot charging mode for heating; rough rolling and finish rolling are carried out; laminar cooling is carried out on the steel strip after finish rolling; and finally, coiling is carried out. The application adopts a plate blank with a proper length, which is beneficial to reducing the temperature difference of the intermediate blank and the head and tail of the steel coil, the hot feeding and hot charging mode is adopted for heating, the core temperature of the plate blank can be improved, the rolling is stable, the rough rolling is carried out for four passes, the temperature drop at the entrance of the finish rolling is further reduced, and through reasonable control of the rolling speed, the plate crown, the loop amount, the bending force and the roll shifting amount and other processes in the finish rolling process, the 1.5mm thick hot-rolled steel plate has the advantages of good rolling stability, good weather resistance and excellent comprehensive performance, and the production efficiency and the yield of the extremely thin gauge hot-rolled high-strength weather-resistant steel plate can be improved.

This application belongs to the field of electrical steel manufacturing technology, specifically relating to an ultra-thin non-oriented silicon steel and its preparation method. The preparation method includes: obtaining a silicon steel slab, and performing five cold rolling passes on the silicon steel slab to obtain ultra-thin non-oriented silicon steel. During the five cold rolling passes, there are no external heating sources or heat preservation equipment. The silicon content of the silicon steel slab is 4.0-4.5 wt%. The five cold rolling passes are sequentially divided into a first pass, a second pass, a third pass, a fourth pass, and a fifth pass. The initial rolling temperature of the first pass is room temperature, and the final rolling temperature of the first pass is 60-65℃. This application achieves a self-heating temperature by coordinating and matching the pass reduction rate, rolling speed, and tension, thereby achieving the target thickness and ensuring the plate shape.

This invention belongs to the field of stainless steel rolling technology, specifically relating to a nickel-based alloy sheet and its microstructure and property control rolling method. The microstructure and property control rolling method for nickel-based alloy sheets provided by this invention employs a two-stage rolling process, including: a first-stage rolling process: initial rolling temperature ≥1080℃, final rolling temperature ≥950℃, deformation per pass ≥8%, total deformation ≥60%, and rolling speed ≤2m / s; and a second-stage rolling process: initial rolling temperature ≤920℃, final rolling temperature ≥820℃, rolling speed ≥3m / s, and total deformation ≥50%. This invention optimizes the rolling process to achieve uniform grain size control in nickel-based alloy sheets, significantly improving their mechanical properties and corrosion resistance.

The invention belongs to the technical field of rolling mill rolling thickness compensation, and particularly discloses a rolling mill rolling thickness compensation control method based on an AGC (automatic gain control) hydraulic oil cylinder system, which comprises the following steps: cutting a continuous steel plate into independent infinitesimal elements with time sequence identifiers, accurately calculating the residual stroke of each infinitesimal element to a roll gap through real-time speed integration, and when the rolling speed changes drastically, controlling the residual stroke to be equal to or smaller than the residual stroke of each infinitesimal element. According to the method, the actual time when each infinitesimal arrives at the roll gap can be accurately mapped, and the accurate synchronization of the triggering time of the compensation instruction and the spatial position of the infinitesimal is ensured; preorder infinitesimal elements which are rolled are utilized to predict rolling force sudden change caused after the infinitesimal elements needing to be compensated enter the roll gap through roll force change response of the roll gap, roll gap compensation is triggered only when the rolling force sudden change is predicted to be caused, and online verification of thickness deviation disturbance effectiveness is achieved. Redundant adjustment and extra system disturbance caused by blind compensation can be avoided to the maximum extent.

To provide a parallel processing method for control cooling and Mandarin roll coil formation of a steel wire.SOLUTION: A hot-rolled steel wire is formed into a vertically helical ring by a laying winder, and dropped in an annular air duct having a center axis eccentric from a winder center axis. An annular stacking table that receives the ring to turn is provided in the air duct, and a coil having an outer / inner diameter of a ring diameter ±α (eccentric amount×2) is formed through eccentric stacking. A currently stacked ring row is blast-cooled by a strong suction duct connected to the lower end of the air duct. Cooling performance equal to or higher than boiling / cooling is acquired by an air speed of 20 m / s or higher and contamination of a mist spray. A rolling speed of 100 m / s or higher can also be dealt with.SELECTED DRAWING: Figure 1

The invention discloses a roller control method, a left-right swing type mouse roller device and a mouse. The left-right swing type mouse roller device comprises a roller support, a roller, an MCU, a PCB and a side swing sensing module. The left side and the right side of the front end and / or the rear end of the roller support extend to form swing triggering parts. The PCB is arranged below the roller support, the MCU is connected or arranged on the PCB, and the side swing sensing module is arranged on the PCB and corresponds to the swing triggering part in position; the side-sway sensing module is an analog quantity sensor, and the signal output end of the side-sway sensing module is electrically connected with an analog-to-digital conversion ADC pin of the MCU; when the roller swings laterally under the action of external force, the swing triggering part triggers the side swing sensing module, and the larger the swing angle is, the larger the voltage output by the side swing sensing module is; the MCU is configured to collect the voltage value output by the side-sway sensing module and output a left-right moving instruction or a page turning instruction at the corresponding speed according to the voltage value. Therefore, a user can steplessly and accurately control the transverse rolling speed by controlling the deflection angle.

The present application relates to high-quality aluminum alloy plate processing technology field, disclose a kind of copper clad aluminum alloy annealing-free rolling method, comprising: removing composite blank surface dirt and oxide skin and completing straightening, send into cantilever rolling mill;Control 9 pass continuous cold rolling, so that single pass reduction rate is in the range of 8% to 15%, the rolling speed of the first 8 passes is gradually increased from 0.4m / s to 1.0m / s, and the single pass reduction rate is distributed in gradient decreasing;Finished pass rolling speed is stabilized at 1.2m / s, combined with preset pressure interval spraying emulsion, the present application offsets heterogeneous metal interface shear stress accumulation by discretization distribution total deformation, balances oil film thickness and exports interface heat using dynamic pressure lubrication mechanism generated by high-speed rolling, realizes copper layer and aluminum matrix synchronous plastic extension under the condition of no intermediate annealing, ensures finished product size precision and surface quality.

The invention relates to a method for reducing rolling stress of a welded joint, and belongs to the technical field of welding. The method comprises the following steps: a, trimming strip steel, wherein a shearing surface is inclined to the rolling direction of the strip steel; b, welding joints are assembled, so that a to-be-welded welding line is linearly arranged; c, welding, wherein the strip steel is welded together through laser welding equipment; d, acid pickling, wherein the welded strip steel is subjected to acid pickling in an acid pickling tank; and e, rolling, wherein the rolling speed ranges from 300 m / min to 1500 m / min. According to the method, the joint form of the laser welding joint is optimized, welding seam forming is controlled, the stress and stress fluctuation of the roller in the welding joint rolling process are reduced, the rolling process is stable, and the strip breakage rate of the welding joint in the rolling process is reduced. The problem that when an existing strip steel welding connector is subjected to rolling deformation, the welding connector and a roller are arranged in parallel, and the rolling stress is suddenly increased, so that the strip breakage rate is high is solved.

The invention relates to a UCM rolling mill roll gap quick-opening function control system, which belongs to the technical field of metal rolling, and comprises a signal detection module used for monitoring whether the rolling mill is broken or not and monitoring the rolling speed in real time; and the control processing module is used for closing the roll gap servo valve and opening the unloading proportional valve when the strip breakage signal is triggered and the rolling speed exceeds 300m / min, so that the roll gap is lifted and maintained at the position of 60mm, and meanwhile, the inlet three-roll stabilizer is opened, so that the roll bending force is kept at 60% in a positive bending working state. Through belt breakage signal detection, speed threshold judgment and hydraulic servo control, automatic quick opening of the roller gap can be achieved, the influence of belt breakage accidents is reduced, and the automation level of a production line is improved.

The utility model relates to the technical field of ore sorting, and discloses mining ore sorting equipment which comprises a sorting base, a first supporting frame is fixedly connected to the top of the sorting base, an adjusting groove is formed in the position, away from the first supporting frame, of the top of the sorting base, and a movable support is movably connected to the top of the sorting base through the adjusting groove. A movable shaft is movably connected to the front face of the movable support in a penetrating mode, a second supporting frame is movably connected to the inner side of the movable support through the movable shaft, vibration springs are fixedly connected to the tops of the first supporting frame and the second supporting frame, a connecting support is fixedly connected to the top ends of the vibration springs, and a sorting frame is installed on the inner side of the connecting support. According to the ore sorting device, the ore rolling speed can be controlled by adjusting the inclination angle, so that the sorting effect and the sorting efficiency are improved, the dust falling effect can be achieved, and the situation that the health of workers is harmed by generated dust is avoided.

The invention discloses a method for improving the structure uniformity of austenitic stainless steel ultrathin strip steel. The method comprises the steps that the total deformation of the middle rolling process is larger than or equal to 80%, the deformation rate of each pass is 25-35%, and the rolling speed is larger than or equal to 300 m / min; the bright annealing temperature in the middle rolling process is set as follows: the first area is 1120 + / -5 DEG C, the second area and the third area are 1130 + / -5 DEG C, the fourth area is 1140 + / -5 DEG C, and the TV value in the annealing process is 6-8; the total deformation of a finished product in the rolling process is 40-50%, the deformation rate of each pass is 15-25%, and the rolling speed is greater than or equal to 400m / min; the bright annealing temperature of the finished product is set as follows: the first zone is 1080 + / -5 DEG C, the second zone and the third zone are 1040 + / -5 DEG C, the fourth zone is 1060 + / -5 DEG C, and the TV value in the annealing process is 3-4. By optimizing and controlling the process parameters of the cold rolling and annealing procedures, the structure uniformity of the austenitic stainless steel ultrathin strip steel is effectively improved, the grain size is 10 grade or 11 grade, and the fluctuation of the grain size in the whole thickness direction is within the range of + / -0.5 grade.

The invention discloses a method and device for producing an SKS51 hot rolled steel strip on a CSP production line, which can improve the production rate of the CSP production line by strictly controlling the production rhythm of the SKS51, improving the technological parameters of pouring the SKS51 by a continuous casting machine on the CSP production line, improving the throwing speed of the SKS51 and the surface quality of a slab, optimizing the heating process of the SKS51 in a soaking pit furnace and improving the hot rolling speed. And the SKS51 oxide press-in defect amount is effectively reduced, the grade reduction rate or the waste judgment rate caused by the SKS51 hot rolled steel strip oxide defects is reduced, and the economic benefits are remarkable.

The invention relates to the technical field of coal cleaning equipment, and discloses a coal cutter surface coal cleaning device which comprises a coal cleaning assembly, a driving mechanism and a control system. The multiple sets of coal cleaning assemblies are arranged side by side, each coal cleaning assembly comprises a power shaft, a rotating belt and a plurality of supporting shafts, and the power shafts and the supporting shafts are installed on the top face of a machine body of the coal mining machine side by side; the power shaft and the supporting shafts are sleeved with the rotating belt, and the power shaft and the supporting shafts are in transmission connection through the rotating belt sleeve. The driving mechanism is installed in the machine body and used for driving one power shaft to rotate. The control system is installed in the machine body, and the driving mechanism is electrically connected with the control system. The power shafts of every two adjacent coal cleaning assemblies are in transmission connection, and the top faces of the rotating belts move towards the coal wall side. Automatic coal cleaning of the machine face of the coal mining machine can be achieved, the rolling speed of coal briquettes is reduced, the labor amount of workers can be reduced, personnel safety is improved, and the operation load of the coal mining machine is reduced.

The application discloses a kind of control method, device, electronic equipment and medium of hot-rolled strip thickness, the method includes: obtaining the steel grade information of strip steel and the rolling speed of finishing mill group to strip steel;Determine the speed of steel throwing of the tail section of strip steel based on the steel grade information by finishing mill group;Based on the rolling speed, the speed of steel throwing and the preset conversion time, the speed of steel throwing rate of finishing mill group is determined, to reduce the rolling speed to the speed of steel throwing based on the speed of steel throwing rate;When tail section enters finishing mill group, the tail section of strip steel is thrown based on the speed of steel throwing, so that the temperature of tail section is within the preset temperature threshold value.The method can make the thickness of strip steel tail close to the target value of finished product, improve tail thickness hit rate.

The application belongs to the technical field of rolling pipe control, and particularly relates to a dynamic variable frequency control system of a rolling mill exhaust fan and rolling speed linkage, which is characterized in that: the system is used for acquiring a stable reference speed by real-time collection and analysis of rolling speed and elimination of transient disturbance signals, accurately matching optimal exhaust air volume combined with rolling flue gas generation characteristics, converting fan target rotating speed, dynamically setting torque limit value by adapting fan torque characteristics, stabilizing frequency converter bus voltage and compensating variable frequency power loss, and realizing accurate synchronous linkage of exhaust fan rotating speed and rolling speed through rotating speed closed loop correction, so as to solve problems of energy consumption redundancy, unstable exhaust and motor overload caused by fixed air volume and extensive linkage of a traditional exhaust fan, realize on-demand air supply, significantly reduce energy consumption and prolong equipment life, and be beneficial to improving the operation stability and safety of a rolling production line.

The application discloses a kind of composite board hot rolling speed-deformation-pressure coupling control system and method, based on multilayer composite board hot rolling data, using long short-term memory network establishes space-time sequence prediction model, and according to the deviation of prediction quality and target quality, using multi-objective balanced optimization algorithm to feed forward correction is carried out to roll gap.On the basis of feed forward correction, the residual between thickness actual value and set outlet thickness is further considered, and a roll gap feedback adjustment strategy is designed, realizing the coupling control of composite board hot rolling speed-deformation-pressure.The composite board hot rolling speed-deformation-pressure coupling control method proposed in the application has high control precision, makes up for the defects of traditional methods, improves the speed-deformation-rolling force dynamic coupling control, and can be widely used in multilayer composite board hot rolling.

The application discloses a roller feeding machine for screw manufacturing, and relates to the field of screw manufacturing.The roller feeding machine comprises a support frame, a plurality of support inclined rods are fixed on the support frame, lifting rods are arranged on the side of the plurality of support inclined rods away from the limiting block rod, a fixing seat is fixed on the side of the support frame close to the feeding frame, a lifting seat is arranged on the fixing seat, an auxiliary material moving mechanism is arranged between the lifting rod and the lifting seat, and a conveying stabilizing mechanism is arranged between the lifting rod and the lifting seat.The auxiliary material moving mechanism on the lifting rod is in contact with the rolling direction of the roller, the auxiliary material moving mechanism is used for controlling the rolling speed of the roller on the lifting rod, and the conveying stabilizing mechanism is used for limiting the roller, so that the possibility of damage of the roller caused by the end of the lifting rod due to the rapid rolling and impact of the roller is reduced, the rolling and impact sound during the feeding of the roller is reduced, and the feeding noise of the feeding machine is reduced.