79results about "Profile control device" patented technology

Control system for cold rolling mills to improve sheet metal thickness uniformity. Sensors monitor the state of the cold rolling mill by measuring (i) roll eccentricity, (ii) roll slips during mill operation, (iii) mill disturbances from roll speed or roll force manifestations, and (iv) unknown disturbances referred to as process noise. The controller analyzes data from sensors to compensate. Data collected during the mill operation by the sensors are delayed in reaching the controller. This communication delay is accounted for by using a filter. Since an objective of the controller software is dynamic identification of eccentricity of the back up rolls, which is non-linear by nature, an Extended Kalman Filter may be used.

A roll press rolls each including an upper roll and a lower roll that are supported by a main bearing at both ends and rotate at a predetermined speed, upper and lower bending bearings that are disposed outside each of the main bearings and correct deflection of the press rolls by receiving a bending load, an upper reverse operation bending mechanism provided in the upper roll that operates with hydraulic oil, a lower reverse operation bending mechanism provided in the lower roll, and two upper reverse operation bending mechanisms and two lower reverse operation bending mechanisms being installed in the upper and lower bending bearings, respectively. Deflection occurring in the upper roll and the lower roll is corrected by causing the upper reverse operation bending mechanism or the lower reverse operation bending mechanism to generate downward power or upward power, respectively.

The rolling apparatus (1) is configured to execute a control content for producing a test piece (61) by forming fixed-side streaks (62) and moving-side streaks (63) in a base material (60), and a control content for receiving an inputted positional deviation amount between groove center lines of the moving-side streaks (63) and virtual groove center lines (W) of the fixed-side streaks (62), and then for calculating and outputting a correction movement amount, based on the positional deviation amount, for use in correcting and adjusting the moving flat die (4) at a top dead center thereof. Further, the rolling apparatus (1) is configured to execute a control content for receiving and outputting an input of bite depths(T) of the fixed-side streaks (62) and moving-side streaks (63) in the test piece (61).

This invention belongs to the field of non-oriented silicon steel technology and discloses a method for improving the edge quality of hot-rolled strip steel of high-grade non-oriented silicon steel, including the following steps: 1) setting vertical rolls at the entrance of each stand of the finishing mill and giving a single-sided reference side pressure P. 基 ;2) Detect F i The real-time temperature of the strip at the frame inlet is used to obtain the lateral pressure coefficient L in the length direction. i And the lateral pressure coefficient W in the width direction i ;3) According to F i The thickness H of the strip at the frame entrance is used to obtain the thickness lateral compression coefficient H. i ;4) Select the compositional lateral pressure coefficient X based on the sum of the percentage contents X of Si and Als in the steel. i ;5) Calculate F i Real-time single-sided side pressure P of the vertical roller at the frame entrance i =P 基 ×L i ×W i ×H i ×X i The side pressure is dynamically adjusted based on the calculation results. This invention dynamically adjusts the side pressure of the vertical rolls at the entrance of each stand in the finishing mill to correct strip deviation and improve edge cracks, thereby achieving optimal edge quality.

The present application relates to a method for manufacturing a cold-rolled steel sheet using a transverse full-width heating device and a cold-rolling mill, the transverse full-width heating device heating a steel sheet over the entire width of the steel sheet, the cold-rolling mill being disposed on the downstream side in the rolling direction relative to the transverse full-width heating device and rolling the steel sheet, wherein the method includes a step of heating the steel sheet using the transverse full-width heating device in such a manner that the temperature at the widthwise end of the steel sheet on the entry side of the cold-rolling mill is higher than the temperature at the widthwise center of the steel sheet.

This application provides a control method for a cold rolling mill, comprising: switching each stand to a rolling force control mode and controlling each stand to fully open its roll gap; for the first stand, adjusting the first roll gap of the first stand according to the corresponding first rolling force, controlling the cold rolling mill to start, and stopping when the first deformation zone of the first stand reaches the exit of the cold rolling mill; for the (n-1)th stand, adjusting the (n-1)th roll gap of the (n-1)th stand according to the corresponding (n-1)th rolling force, controlling the cold rolling mill to start, and stopping when the first deformation zone of the first stand reaches the exit of the (n-1)th stand; for the nth stand, adjusting the nth roll gap of the nth stand according to the corresponding nth rolling force, controlling the cold rolling mill to start, and controlling the cold rolling mill to perform stable rolling when the first deformation zone of the first stand reaches the coiling device. The technical solution of this application embodiment can ensure a smooth and stable start-up of the cold rolling mill.

A plate shape prediction control method of eighteen-roller rolling mill, which comprises the following steps to be executed: (A) eighteen-roller rolling mill data acquisition; (B) eighteen-roller rolling mill roll system geometry parameter initialization and position calculation; (C) strip metal deformation model construction; (D) roll elastic deformation model construction; (E) roll system deformation coordination equation construction; (F) force and torque balance equation supplement; (G) plate shape prediction based on mathematical model; (H) optimization control based on GA algorithm.

The change in the plate wave shape distribution is evaluated with high accuracy even in the case where vibration is generated on the metal strip. In each of the divided regions obtained by dividing the reflected light region in the plate width direction into j parts, the uppermost position of the upstream side boundary line position of the reflected light region and the uppermost position and the lowermost position of the downstream side boundary line position are found, and for each of the obtained images, the difference between the variation amplitude of the uppermost side boundary line position and the variation amplitude of the lowermost side boundary line position is calculated for each divided region, and is set as information corresponding to the maximum variation amplitude of the reflected light region for the (k)th image, and is made to correspond to the central position in the plate width direction of the divided region i, and when a value indicating the position in the plate width direction is set as a variable x, the position in the plate width direction of the region in the image is normalized to the range of -1 ≤ x ≤ 1 in the plate width range of the region, the value of the information is taken as an index corresponding to the rolling plate wave shape distribution in the plate width direction obtained from the (k)th image, a Chebyshev polynomial is applied to find the coefficients, and the first order coefficient C1' is taken as the detection result signal of the rolling plate wave shape distribution of the first order component in the plate width direction of the (k)th image.

This invention relates to the field of intelligent manufacturing technology, and in particular to a data-driven method and system for predicting and optimizing the shape of 1060 aluminum foil rolled for batteries. The method includes the following steps: S101: Real-time acquisition of multi-source rolling feature data and mill status data; S102: Data cleaning and temporal feature extraction; S103: Accurate shape prediction using a deep learning model; S104: Calculation of the residual matrix between the predicted shape and the target shape; S105: Determination of the process threshold for the residual matrix; S106: Construction of a multi-objective optimization function for shape flatness and energy efficiency; S107: Improved genetic algorithm for multi-parameter global optimization; S108: Feedforward compensation control and online adaptive model update. This invention can accurately capture nonlinear features that are difficult to quantify, such as the dynamic changes in roll thermal crown, nonlinear deformation of metal, and micron-level fluctuations in oil film thickness during the rolling process of ultra-thin aluminum foil. Simultaneously, by combining the fusion analysis of multi-source sensor data and mill status data, it achieves temporal and accurate prediction of the shape, thereby improving the accuracy of shape prediction.

The present invention provides a roll cooling control device that can cool the roll without adversely affecting the controllability of the plate thickness. [Solution] The rolling / idling prediction unit predicts the time it will take for the next rolled material to reach the roll at the transition point when the machine transitions from rolling to idling. The cooling water volume monitor unit acquires the amount of cooling water supplied to the nozzle at the transition point. The roll thermal expansion amount prediction unit uses the time predicted by the rolling / idling prediction unit as the prediction period and predicts the amount of thermal expansion of the roll at the prediction period and at the transition point, respectively. The cooling water volume reduction calculation unit works in conjunction with the roll thermal expansion amount prediction unit to calculate the amount of cooling water to be reduced within the prediction period so that the difference between the amount of thermal expansion at the transition point and the amount of thermal expansion during the prediction period falls within a predetermined range. The variable flow valve adjustment unit adjusts the opening of the variable flow valve to reduce the amount of cooling water by the amount calculated by the cooling water volume reduction calculation unit.

The application provides a rolling method for improving flatness of a 1100MPa high-strength steel hot-rolled coil and a hot-rolled plate, and belongs to the technical field of steel smelting. The method comprises the following steps: step 1: a rough rolling stage, dynamically adjusting the opening degree of side guides, and controlling the camber of the intermediate blank after rough rolling to be not more than a preset threshold value; step 2: a finish rolling stage, correcting the intermediate blank crown model setting value, setting the head target plate shape of the finish rolling outlet to a middle wave rolling strategy, and setting the tail target plate shape to a no wave shape rolling strategy; step 3: a cooling stage, controlling the laminar cooling header in a sparse opening mode, and prolonging the opening length of the cooling header; and step 4: a coiling stage, opening the cooling water of the mandrel at intervals, and dynamically adjusting the opening interval according to the mandrel temperature. The rolling method can significantly improve the flatness of the 1100MPa high-strength steel hot-rolled coil, reduce plate shape defects such as middle wave, edge wave and compound wave, and improve the product quality.

The present invention relates to a method and a device for locally modifying the roll gap in the region of the strip edges (10) of a rolled strip (1) in a rolling stand (2). The invention aims to enable the roll gap in the region of the strip edges (10) of the strip (1) to be locally modified during hot rolling. According to the invention, this objective is achieved by axially displacing the work rolls (3, 4) in opposite directions by a displacement s, where s is greater or less than Δrtanα, Δr represents the radial wear (R) of the running surface (8), and α represents the helix angle of the conical section (7) of the respective work roll (3, 4).

The invention relates to a control system (4) for a roll stand (1) for rolling a flat rolling stock (2) made of metal, wherein initial data (A) and target data (Z*) of the rolling stock (2) and stand data (G) of the roll stand (1) are known before the rolling stock (2) enters the roll stand (1). The initial data (A) describe the rolling stock (2) at least geometrically on the run-in side of the roll stand (1). The target data (Z*) are data that the rolling stock (2) should have at least geometrically on the run-out side of the roll stand (1). The stand data (G) describe the roll stand (1). The control system (4) takes the initial data (A) and the target data (Z*), taking account of the stand data (G), as a basis to determine symmetrical and asymmetrical manipulated variables (sym, asym) for actuators (10 to 14, 18, 19) of the roll stand (1) before the rolling stock (2) enters the roll stand (1) and, at least when the rolling stock (2) starts being rolled in the roll stand (1), controls the actuators (10 to 14, 18, 19) in accordance with the determined symmetrical and asymmetrical manipulated variables (sym, asym). The actuators (10 to 14, 18, 19) comprise an adjusting device (10) and at least one bending device (13, 14) for bending similar rollers (7, 8) of the roll stand (1) and / or bending force actuators (18, 19) for bending an upper and a lower set of rollers of the roll stand (1) independently. They each have a dedicated subunit 0 (10a to 14a, 18a, 19a, 10b to 14b, 18b, 19b) for the operator side and the drive side. The subunits (10a to 14a, 18a, 19a, 10b to 14b, 18b, 19b) are activated with the same absolute value and the same sign in the case of a symmetrical manipulated variable (sym) and with the same absolute value but different signs in the case of an asymmetrical manipulated variable (asym). The control system (4) first determines the symmetrical manipulated variables (sym) and then the asymmetrical manipulated variables (asym) additionally taking account

This invention discloses a method for improving the rolling stability of thin-gauge strips in a continuous casting and rolling production line. The method includes a thin slab rolling mill; adjusting the mill rigidity; adjusting the thickness of the intermediate strip slab; installing a width measuring instrument at the exit of the fan-shaped section of the slab; continuously comparing the measured value with the actual value; replacing the actual measured value with a preset width value when the deviation obtained from the comparison does not meet the constraint conditions; reducing the downward pressure of the roughing mill to a preset percentage of the original downward pressure; adjusting the looper tension to a preset value; and after the strip is threaded at the tail end, the mill accelerates in segments according to a preset strategy with delay time intervals based on a delayed acceleration command. This effectively reduces the occurrence of issues such as strip deviation, steel accumulation, poor coil shape, tailing, and rolling damage during the production of thin-gauge strips.

A rolling system for metal substrates includes a work stand having an inlet and an outlet. A hot oil spray header is provided on the inlet side to apply hot oil to the surface of the work rolls of the work stand and to approximately 50% or more of the width of the work rolls. The rolling system also includes at least one of a coolant spray header or a lubricant spray header. A coolant spray header may be provided on the outlet side of the work stand to apply coolant to the surface of the work rolls. A lubricant spray header may be provided on the inlet side of the work stand to apply lubricant to the surface of the work rolls and to at least partially within the roll gap of at least one work stand.

This application relates to the field of reversible rolling mill control technology, and discloses a method, device, medium, and reversible rolling mill for strip shape control. The method includes: acquiring standard strip shape deviations and standard speed indicators at different positions of a standard strip at intervals, acquiring the corresponding standard strip adjustment methods and saving them as the Gth data entry; acquiring the current strip shape deviation and current speed indicator; acquiring the Gth data entry using the current strip shape deviation and current speed indicator, and calculating the similarity between the current strip shape deviation and the standard strip shape deviation; if the similarity is less than a set value, adjusting the current strip using the standard strip adjustment method of the Gth data entry; if the similarity is greater than the set value, selecting the current strip adjustment method based on the current strip shape leveling deviation value and the current values ​​of the four outer channels of the edge, according to the set strip adjustment method. This application can improve the response speed and control efficiency of the reversible rolling mill for current strip shape control.

Before the material enters the rolling stand, a control system for a rolling mill for flat metal stock receives initial data (A) and target data (Z*) of the material and stand data (G) of the rolling mill. The initial data (A) describes the material at the entry end of the rolling mill. The target data (Z*) are the data the material should have at the exit end of the rolling mill. The stand data (G) describes the rolling mill. Before the material enters the rolling mill, the control system uses the initial data (A) and the target data (Z*), taking into account the stand data (G), to determine symmetrical and asymmetrical control variables (sym, asym) for the rolling mill actuators and controls these actuators, at least at the beginning of the rolling process, according to the determined symmetrical and asymmetrical control variables (sym, asym).To determine the asymmetric control variables (asym), the control system first determines the symmetric control variables (sym) and then determines the asymmetric control variables (asym) taking into account not only the initial data (A), the target data (Z*) and the framework data (G), but also the previously determined symmetric control variables (sym).

An asymmetric steel formation device includes a production line (1) and an industrial computer (IPC) (2). The production line (1) includes a first sidewall (201) and a second sidewall (202) that are movably mounted on a base along a first direction (D1). Steel formation units (400) are mounted between the first sidewall (201) and the second sidewall (202) along the first direction (D1), forming a formation space (4) configured for a steel sheet (5) to press through. In the IPC (2), a processor (10) drives a first sidewall driver unit (301) to move in the production line (1) according to first sidewall parameters stored in a control parameter table in a memory (20). The processor (10) also independently drives a second sidewall driver unit (302) to move according to second sidewall parameters stored in the control parameter table, thus moving sidewalls independently.

The application relates to the technical field of steel rolling, and particularly discloses a production method of high-strength automobile beam steel 800L-AC steel, which reconfigures alloy element components; the billet is heated; the heating temperature of a heating furnace, total furnace time and soaking section residence time are controlled; rolling parameters are set, including the finish rolling inlet temperature, the final rolling temperature, the coiling temperature and the cooling strategy of the billet, the rough rolling scale removal pass and the load distribution of the finish rolling mill are controlled; the work roll bending force and the roll shifting amount are automatically adjusted according to the plate shape defect type, and the plate shape defect is corrected in real time; the load distribution technology is adopted to control the rolling force deviation of each rack within + / -8%, so that the excessive bending of the roll system caused by local overload is avoided, and the plate shape defect is reduced from the source; the work roll bending force and the roll shifting amount are automatically adjusted according to the plate shape defect type (edge wave and middle wave), the real-time correction of the plate shape defect is realized, the plate shape qualified rate is improved, and the strength and toughness of the steel are significantly improved.

The application discloses a rolling control method for wide and thin 300 series stainless steel cold plates, and comprises the following steps: S1, controlling the centering offset of the steel coil during feeding; S2, selecting the middle roll of the rolling mill according to the width of the coil; S3, controlling the deformation rate, rolling pass and work roll roughness parameters; and S4, controlling the actual stress deviation value of the edge and middle plate shapes. Through the control of the feeding centering offset, the optimization of the rolling roll shape, the optimization of the rolling process and the optimization of the plate shape control, the problems of the off-center coil shape and the broken strip can be effectively improved, the production qualified rate of the product can be improved, and the production cost can be reduced.

The present application relates to the steel material rolling processing technical field, especially to a kind of 0.5wt%~2wt% nickel-containing steel plate oxide scale control method, including heating stage control: nickel-containing steel billet with 0.5wt%~2.0wt% nickel content is sent into continuous heating furnace, using "gradient heating+inert atmosphere protection" mode, rolling stage control: after heating, steel billet is sent into wide plate rolling mill, using "multiple pass small deformation+temperature control rolling" process, cooling stage control: after rolling, using segmented laminar cooling, surface pretreatment: after cooling, nickel-containing steel thick plate is pretreated using "high-pressure water jet+mechanical brushing";The present application can control the thickness of the surface oxide scale of the nickel-containing steel thick plate to be below 20 μm, the peeling rate of the oxide scale and the matrix is increased to more than 90%, the subsequent cleaning cost is significantly reduced, and the product surface qualification rate is improved.

This invention relates to the field of cold rolling leveling technology, and discloses a method for predicting the thermal crown of rolls during the cold rolling leveling process. The method includes: Step 1, collecting characteristic parameters; Step 2, collecting rolling process parameters; Step 3, collecting process lubrication system parameters; Step 4, calculating rolling pressure; Step 5, calculating heat of plastic deformation; Step 6, calculating sliding friction heat energy; Step 7, establishing a temperature field calculation model for the roll system; Step 8, calculating thermal crown; and Step 9, predicting the thermal crown of the rolls. This invention establishes models for heat of plastic deformation, friction heat, and the roll temperature field based on parameters, calculates the surface temperature of the rolls during the rolling process, and completes the calculation of the thermal crown of the rolls during the cold rolling leveling process. This allows for accurate prediction of the roll's thermal crown, ensuring the quality of the finished sheet shape. Compared to the traditional method that simplifies the heat source to a single interface friction heat, this method fully considers the dynamic changes of friction heat along the roll length and contact arc length.

The embodiment of the application provides a method for improving the control of the intermediate wave in the rolling of a thin-gauge high-strength pickling plate, relates to the technical field of strip steel rolling production, and comprises the following steps: changing the work roll type of a rough rolling mill, optimizing the load distribution of each pass of the rough rolling mill, and ensuring that the load reduction amount of the last pass is not more than a set threshold; optimizing the rolling logic of a finishing rolling mill unit when rolling the intermediate slab of the strip steel based on the proportional crown, wherein the proportional crown is the thickness ratio of the intermediate slab of the strip steel to the crown of the intermediate slab of the strip steel; optimizing the real-time feedback logic of the bending of the finishing rolling mill; and improving the adjustment speed of the bending of the finishing rolling mill stand. The method can effectively solve the problem that the intermediate wave is prone to being generated in the finishing rolling process of the high-strength pickling plate, and accordingly improves the production efficiency and reduces the production cost.

The application discloses a method for preventing the collapse and flattening of cold hard coils with an extremely thin specification, wherein the A2 value of the standard curve of the operation plate of the acid combined rolling mill train is set to be-2 to-4, the outer diameter size error of the winding drum of the coiling machine of the temper mill train is less than or equal to 0.5 mm / m, and the operation key points of the temper mill train are controlled within ±5 mm; the thickness is 0.325-0.350 mm, the entrance unwinding tension is 12 KN, the set tension of the exit coiling head is 14 KN, the thickness is 0.307-0.325 mm, the entrance unwinding tension is 10 KN, the set tension of the exit coiling head is 12 KN, but after 200 m of coiling, the thickness is 0.275-0.307 mm, the entrance unwinding tension is 11 KN, the set tension of the exit coiling head is 13 KN, the thickness is 0.250-0.275 mm, the entrance unwinding tension is 11 KN, the set tension of the exit coiling head is 12 KN, but after 200 m of coiling, the coiling tension is increased to 18 KN.

The change in the plate wave shape distribution is evaluated with high accuracy even in the case where vibration is generated on the metal strip plate. In each of the divided regions obtained by dividing the reflected light region in the plate width direction into j parts in the obtained image, the most upstream position of the upstream side boundary line position of the reflected light region and the most downstream position of the downstream side boundary line position are found, and with respect to each of the obtained images, the difference between the position data of the most upstream side boundary position and the most downstream side boundary position is calculated for each divided region, the value is set as information corresponding to the maximum rolling direction length of the reflected light region of the kth image, and the information is made to correspond to the central position in the plate width direction of the divided region i. When the value indicating the position in the plate width direction is set as a variable x, the position in the plate width direction of the region in the image is normalized to the range of -1 ≤ x ≤ 1 in the plate width range of the region, the value of the information is taken as an index corresponding to the rolling plate wave shape distribution in the plate width direction obtained from the kth image, a Chebyshev polynomial is applied to find the coefficients, and the first order coefficient C1' is taken as a detection result signal of the rolling plate wave shape distribution of the first order component in the plate width direction of the kth image.

The present application relates to the field of cold-rolled sheet shape control, and relates to a cold-rolled sheet rolling shape control method and system. The present application measures the thickness of each monitoring point in the width direction of the incoming sheet at the entrance of the rolling mill in real time, analyzes the fluctuating thickness of each monitoring point of the incoming sheet to identify local fluctuation points, determines the temperature compensation amount of each monitoring point of the roll in combination with the distribution position, and analyzes the pre-output cooling flow of each cooling nozzle of the segmented cooling device based on the temperature compensation amount. The transverse tension distribution data of the cold-rolled sheet after rolling at the current rolling mill outlet is measured, each tension component of each monitoring point tension value is extracted, the type of sheet shape is determined through the proportion analysis of each tension component, and the roll to be adjusted of the rolling mill is determined. The abnormal monitoring point is determined by analyzing the residual tension component array, the correction amount of the corresponding cooling nozzle is calculated, and the final cooling flow is determined in combination with the pre-output cooling flow of each cooling nozzle. The present application improves the pertinence of sheet shape control and the sheet shape quality.

The application provides a hot-rolled spring flat steel end crack control method, and belongs to the field of steel rolling processing in the metallurgical industry. The control method comprises uniform heating of the billet before rolling, uniform cooling of the flat steel after rolling, and high-temperature baking of the flat steel end after cooling. The method is a combined special control method of "billet heating uniformity control + flat steel heat preservation and cooling control after rolling + high-temperature baking of the flat steel after cutting", and realizes the generation of no cracks at the end of the hot-rolled spring flat steel. Especially for the cooled flat steel, since the spring flat steel after cutting still has certain stress which cannot be released, high-temperature baking is carried out at the end of the flat steel respectively, so as to ensure that no cracks are generated at the end.