647 results about "Rolling speed" patented technology

The invention provides an asphalt pavement compactness detection method based on partial least squares regression, which comprises the following steps: acquiring a rolling acceleration signal of a vibratory roller to obtain an equifrequency component, and calculating a corresponding compactness value CMV; temperature data T of the asphalt pavement are collected, and the actual asphalt pavement temperature is obtained through calculation; positioning data of the vibratory roller are collected, and the rolling speed V of the roller is calculated; the method comprises the following steps: performing interpolation on a CMV calculation abnormal point caused by the change of the working state of a road roller, and estimating an actual CMV value of the CMV abnormal point by calculating an average value of a plurality of known CMV values near a target point by adopting a moving average method based on the integrity of an asphalt pavement; and carrying out partial least square regression on the equifrequency component, CMV, T and V variables. The method is a nondestructive testing method, comprehensive and accurate compaction degree evaluation is provided, the compaction state of the asphalt pavement is sensed in advance, and compaction degree detection errors caused by change of the working state of a road roller are eliminated.

The invention provides a low-cost TA4 titanium alloy strip preparation process which comprises the following steps: step 1, preparing a TA4 slab ingot by adopting an electron beam cold hearth smelting furnace die casting method, and carrying out integral machining on the upper surface and the lower surface of a cast ingot by using a large integral cutter head milling machine to obtain a slab; 2, rolling the plate blank to obtain a hot-rolled coil; thirdly, the hot coil is rolled to 3.0-3.8 mm, annealing is conducted, and oxide skin removing treatment is conducted; step 4, trimming two sides, rolling to 1.8-2.5 mm, and carrying out heat treatment; step 5, trimming two sides, rolling to 0.7-1.2 mm, and carrying out heat treatment; sixthly, finished product rolling is conducted after the two sides are trimmed, the rolling process deformation is 20-30%, the rolling target thickness is 0.4-0.5 mm, the pass deformation is smaller than or equal to 7%, the tension is 25-75 kg / mm < 2 >, and the rolling speed is 30-60 m / min; step 7, heat treatment; and 8, stretch bending and straightening. By controlling the rolling process deformation, the rolling target thickness, the pass deformation, the tension and the rolling speed, the rolling deformation nonuniformity is weakened, the plate shape is improved and optimized, rib forming is avoided, and finally stable production of the TA4 titanium alloy strip is achieved.

The invention belongs to the technical field of steel production, and relates to a method for improving the accuracy of final rolling temperature prediction based on a deep learning algorithm. According to the method, multiple key data, such as finish rolling inlet temperature, rolling force, cooling water flow and rolling speed, influencing the finish rolling temperature of hot rolled strip steel are selected through correlation analysis, and a generalized regression neural network (COA-GRNN) optimized by a raccoon optimization algorithm is utilized to establish a finish rolling temperature prediction model. The model realizes remote monitoring of the finish rolling temperature, so that production personnel can predict the trend of the finish rolling temperature in advance and adjust the finish rolling temperature in time, thereby ensuring the quality stability of strip steel and the yield of production.

The invention discloses a cold-rolled strip steel rolling control method and related equipment, and relates to the technical field of strip steel rolling, and the method comprises the steps that a first deviation rectification value and a second deviation rectification value in the strip steel running process are obtained in real time; based on the first deviation correction value, the rolling speed of the rolling mill is adjusted to a preset speed; after the rolling speed is adjusted, the tension parameter and the roller inclination parameter of the target rack are dynamically adjusted based on the second deviation correction value; and the tension parameter and the roller inclination parameter are recovered to initial set values so as to maintain the continuous stability of the rolling process. According to the method, the deviation correction values in front of the pickling section outlet and the rolling mill inlet are obtained in real time, the rolling speed and the shearing speed are dynamically adjusted before the strip steel enters the rolling mill, the tension parameters of the rack and the inclination direction of the rollers are accurately adjusted in combination with feedback of the second deviation correction value, and the deviation trend caused by camber defects is effectively restrained; and the rolling continuity and stability are improved.

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 the technical field of silicon steel rolling, in particular to a high-quality 35W270 silicon steel plate cold rolling process which comprises the following steps: acquiring an ultrasonic echo signal of non-oriented silicon steel; obtaining a stress characteristic factor through the time domain irregular characteristic and the frequency domain energy difference characteristic of the ultrasonic echo signal of the silicon steel plate; obtaining the stress concentration degree according to the stress concentration condition of the ultrasonic echo signal characteristic similar region in the cold rolling section of the non-oriented silicon steel plate, and obtaining a cold rolling speed adjustment factor through the change trend characteristic of the stress concentration degree; and evaluating the stress concentration trend change condition of the non-oriented silicon steel plate through a cold rolling speed adjustment factor, adjusting the cold rolling speed of the silicon steel plate on the basis, and performing new energy silicon steel annealing coating on the cold-rolled silicon steel plate to obtain the 35W270 silicon steel plate. The method aims at analyzing the stress concentration condition of the non-oriented silicon steel plate, and scientific data support is provided for optimizing the rolling speed of the silicon steel plate cold rolling process.

The invention relates to the technical field of alloy processing, in particular to a long-service-life elastic titanium-copper alloy for a VCM elastic piece and a preparation method thereof.The preparation method comprises the following steps that firstly, raw materials including 55%-65% of titanium, 30%-25% of copper, 10%-8% of aluminum, 3%-1% of zinc and 2%-1% of magnesium are weighed according to the mass percent; 2, the raw materials are put into a vacuum furnace to be melted, and a liquid melt is obtained; thirdly, the melt is poured into a casting mold for casting, and a blank is obtained; according to the method, the change of the state of the blank can be responded in real time by calculating the influence of the rolling times and the thickness change of the blank on the rolling control parameters, so that the rolling process can be flexibly adjusted according to the actual situation, the adaptability during machining is improved, and the rolling speed is improved when the rolling times are gradually reduced along with the reduction of the rolling times of the blank. The rolling temperature, ratio, speed and pressure are reduced, excessive deformation and damage of blanks can be effectively prevented, and the quality of final products, namely the elastic life of the alloy, is improved.

The invention provides a production method of a steel wire rod and a welding wire, and the production method of the steel wire rod comprises the following working procedures sequentially performed on a square billet: a heating working procedure: the square billet sequentially passes through a preheating section, a heating section and a soaking section, the temperature of the preheating section is controlled to be 820-870 DEG C, the temperature of the heating section is controlled to be 950-1000 DEG C, the temperature of the soaking section is controlled to be 1000-1040 DEG C, and the total heating time is 70-90 minutes; in the rolling procedure, rough rolling, intermediate rolling and finish rolling are conducted on the heated square billet to obtain a wire rod, the finish rolling inlet temperature is controlled to be smaller than or equal to 850 DEG C, the rolling speed is controlled to be 100-110 m / s, and the spinning temperature is controlled to be 780-810 DEG C; and a cooling process: after spinning, controlling the cooling speed to be less than or equal to 0.6 DEG C / s, and cooling the wire rod to 500-550 DEG C. According to the production method of the steel wire rod, the steel wire rod has a small-size structure, drawing is facilitated, the mechanical property of the same circle is uniform, the thickness of the oxide layer is uniform, and shelling is facilitated.

The invention belongs to the technical field of cobalt-based alloy machining, and particularly relates to high-strength cobalt-based alloy rolling machining equipment which comprises a rack and a cooling system, an upper roller and a lower roller are installed on the rack, one end of the rack is fixedly connected with a first motor, and the first motor is connected with the end of the lower roller through a reduction gearbox; and the other end of the lower roller is mounted on the bearing seat. The device further comprises a thickness acquisition module and a stress acquisition module. The thickness acquisition module and the stress acquisition module are used for monitoring the thickness and rolling pressure fluctuation of a rolled plate in real time, the control module is used for generating a corresponding fluctuation coefficient, and the thickness fluctuation coefficient and the stress fluctuation coefficient are comprehensively analyzed to generate an evaluation coefficient; and the roller spacing, the rolling speed and the working state of a cooling system are dynamically adjusted according to the evaluation result, so that the rolling process can adapt to material characteristics and working condition changes, the thickness uniformity of rolled plates is effectively improved, and the adverse effect caused by abnormal fluctuation of rolling pressure is reduced.

The present invention relates to the technical field of vehicle road noise simulation. Disclosed is a linearized tire model building method. The method comprises: building a two-dimensional tire finite element model on the basis of a material distribution diagram, gridding parts of a tire, and defining different material parameters; performing inflation, loading and rolling simulation; performing modal simulation; and then using special software to generate a linearized tire model. During finite element model building, a cavity characteristic is added for the linearized tire model, and during simulation, tire cavity air property parameters are given; in order to consider the damping characteristic of the tire, a rubber component in the finite element model is represented by a hyperelastic Yeoh model and a viscoelastic model represented by a Prony series, and a cord is described by a linear elastic constitutive model; and the finite element model is a model with a speed, and simulation at any rolling speed can be performed, so that the linearized tire model comprises a speed characteristic, making linearized tire model building more accurate.

The utility model discloses a special-shaped lithium strip rolling and shaping device which is sequentially provided with a lithium strip placing mechanism and a special-shaped rolling mechanism along a processing path, the lithium strip placing mechanism is used for placing a lithium ingot; the special-shaped rolling mechanism comprises a first special-shaped roller and a second special-shaped roller which can move towards each other and away from each other, the outer surface of one of the first special-shaped roller and the second special-shaped roller is provided with a circumferentially-arranged convex strip, the outer surface of the other one of the first special-shaped roller and the second special-shaped roller is provided with a circumferentially-arranged groove, and the convex strip and the groove are oppositely arranged. The convex strips are matched with the grooves to press indentations on the lithium strip; after the scheme is adopted, the problem of poor production quality of the existing rolling and shaping device can be solved, the rigidity of a lithium strip can be improved, the tension control of unwinding of the rolled lithium strip can be better controlled, the flowability of lithium can be reduced, the problem of material stacking in the rolling process can be better solved through indentations, the rolling speed can be increased, and the production efficiency and the qualified rate can be improved.

The invention discloses a method for eliminating edge cracks of an ultrathin copper plate strip. Aiming at the edge crack problem in the ultrathin copper strip production, the invention provides an efficient elimination method, and the process comprises the following steps of: balancing the internal stress of a casting blank and optimizing the material performance by a multiple annealing process; a machine vision technology is utilized to accurately determine crack positions, and defect areas are automatically cut and removed; carrying out local edge heating treatment; and in the rolling process, the rolling speed is dynamically regulated and controlled according to the actually measured edge stress, cracks are prevented, and the production rate is optimized. According to the method, the belt breakage risk and raw material waste are remarkably reduced, and the product percent of pass and the production efficiency are improved.

The invention belongs to the field of non-ferrous metal cast rolling production equipment, and relates to a front cooling high-speed cast rolling machine and a production method thereof. The pair of casting and rolling rollers is mounted in the casting and rolling archway; the casting and rolling transmission system is used for driving the casting and rolling rollers to rotate; the rotary cooling system is used for cooling the casting roller; the belt type pre-cooling device is mounted on the cast-rolling archway and is positioned at the upstream of the cast-rolling roller, and the belt type pre-cooling device comprises an upper cooling steel belt and a lower cooling steel belt which are arranged to form a cooling channel for receiving and cooling the casting molten aluminum; the belt type pre-cooling transmission device is used for driving the upper cooling steel belt and the lower cooling steel belt to move; the controlled cooling spraying system is used for cooling the upper cooling steel strip and the lower cooling steel strip; and the belt type pre-cooling device is configured to pre-cool the casting molten aluminum before the casting molten aluminum enters the casting roller, so that the liquid-solid phase ratio of the casting molten aluminum is reduced, and the purposes of shortening the cooling and solidification time, improving the casting and rolling speed and increasing the productivity are achieved.

According to the high-quality high-speed wire rolling method for the low-alloy high-speed steel wire rod based on continuous casting forming, gradient heating is conducted through the step type heating furnace, preheating of a continuous casting blank is uniform, and phase change stress is reduced. The initial rolling temperature is set and controlled to be 1060-1100 DEG C, the finish rolling temperature is controlled to be 950-1050 DEG C, the spinning temperature is controlled to be 980-1030 DEG C, and the highest rolling speed is 25 m / s. And after rough rolling, induction heating temperature compensation is carried out to increase the surface temperature of the blank, the temperature is set to be 1000-1040 DEG C, the temperature compensation time is controlled to be 10-20 s, and surface cracks and head wind caused by too low temperature are prevented. And closing the cover plate after spinning, adopting heat collection, immediately entering a slow cooling tunnel furnace for furnace cooling after doffing, and discharging for annealing after 48 hours or longer. A continuous casting technology is used for replacing a traditional die casting technology, controlled rolling and controlled cooling in the rolling process are matched, composition segregation is remarkably reduced, the core quality is improved, carbides are effectively refined, the uniformity of products is guaranteed, the production efficiency is improved, the production cost is reduced, and the influence on the environment is reduced; and a new process and a new route are provided for producing the high-quality low-alloy high-speed steel wire rod.

The invention relates to a continuous casting and rolling rapid processing technology of a medicine foil. The process comprises the steps of raw material preparation, smelting and refining, continuous casting, cooling treatment, heating and rough rolling, finish rolling, annealing treatment, surface treatment, slitting and the like. By controlling the smelting temperature, the casting speed, the rolling speed, the roller surface roughness, the annealing parameters and other process conditions, efficient production of the aluminum foil is achieved, and the surface smoothness, the thickness precision, the tensile strength and the ductility of the medicine foil are guaranteed. The thickness of the finished medicine foil is 0.02-0.04 mm, the tensile strength is 80-120 MPa, the ductility is not lower than 1.5%, and the surface roughness Ra value is controlled to be 0.1-0.3 micron. The process can produce high-quality medicine foil meeting the medicine packaging requirement, has the advantages of being efficient, stable, energy-saving and environment-friendly, and is suitable for large-scale industrial production.

The invention discloses a cold rolling speed-rolling force-tension cooperative control system and method for a composite board, and the method comprises the steps: firstly, achieving the multi-step dynamic prediction of rolling key parameters through the time sequence feature extraction capability of a GRU network based on the cold rolling data of a multi-layer composite board, and achieving the feed-forward control through online optimization; a fuzzy PID self-adaptive compensation strategy is combined, so that the influence of external disturbance and parameter time variation is effectively inhibited; and the two methods are combined in a weighted fusion manner, so that the perspectiveness is ensured, the real-time disturbance influence is considered, and the cold rolling speed-rolling force-tension cooperative control of the composite plate is realized. According to the cold rolling speed-rolling force-tension cooperative control system and method for the composite board, the control effect is better, higher generalization ability and anti-interference performance are achieved, the control precision and stability of cold rolling of the multi-layer composite board are greatly improved, and the system and method can be widely applied to the cold rolling production process of the multi-layer composite board.

The invention relates to the technical field of rolling optimization, in particular to a ring-pull can aluminum foil rolling process parameter optimization method which comprises the following steps: ring-pull can aluminum foil rolling optimization: setting rolling speed and pressure to ensure uniform thickness and smooth surface; parameters are adjusted through multiple rounds of rolling, and a joint optimization cycle is established; microwave and electromagnetic heating are introduced, rolling and heating are iteratively optimized cooperatively, an optimal parameter combination is obtained, and the problems that due to the fact that the control precision of key parameters such as temperature and pressure is limited, non-uniform distribution of the thickness of aluminum foil and reduction of the surface quality in the ring-pull can production process are directly caused are solved. According to the technical scheme, the technical problems that in the prior art, the rolling process parameters of the aluminum foil of the zip-top can are controlled in a refined mode due to collaborative iteration optimization rolling and multi-stage heating, the thickness uniformity and the surface smoothness of the aluminum foil of the zip-top can are remarkably improved, and support is provided for comprehensively improving the quality of the zip-top can product are solved.

The invention discloses a control method for rolling a high point of a steel rail by a universal method, which is characterized in that a rolling mill for rolling the steel rail by the universal method is generally arranged by five racks, namely a first cogging mill, a second cogging mill, a universal roughing mill, an edging mill and a universal finishing mill; according to the control method, when the tail of a rolling piece in the last pass of a universal unit is separated from universal rough rolling, the swing of the rolling piece at the inlet of an edging mill is controlled to reduce the high point, and the swing of the rolling piece is reduced through two schemes: firstly, the rolling speed of the tail in the last pass of the universal unit is reduced; and secondly, a rolled piece stabilizing device (as shown in the figure) is designed and mounted at an inlet of the edging mill, the rolled piece stabilizing device is automatically put into use before the tail part of the rolled piece of the last pass rolled by the universal unit is separated from the universal roughing mill, and the rolled piece is supported through a guide wheel at the front end of the device, so that the swinging of the rolled piece is reduced, and the effect of reducing a high point is achieved.

The invention discloses a steel plate multi-rolling forming method capable of detecting curvature radius in real time, which can perform simulation process simulation on the rolling working condition of a high-strength thick plate through related technologies, optimize the displacement amount of a driving roller of a plate rolling machine and the plate rolling speed in the multi-rolling forming process, and improve the accuracy of plate rolling forming. And the test paper working procedures in the rolling process of unconventional steel plates such as high-strength thick plates can be greatly reduced. And the stress change of the steel plate in the rolling process can be intuitively seen through a simulation analysis result, so that the quality reliability of a steel plate rolled finished product is ensured. The intelligent degree of large traditional industrial equipment such as a plate rolling machine is improved, the personnel investment in the plate rolling process is reduced, and the rolling efficiency and the forming quality of unconventional steel plates such as high-strength thick plates are improved.

The invention belongs to the technical field of gold stamping, and particularly relates to a digital gold stamping mechanism and a working method thereof. A stepping motor controls and drives a traction mechanism and a winding drum to control gold foil to move, the stepping motor drives the traction mechanism to accurately control the speed of the gold foil, then a trolley controlled by a servo motor is matched to move along a cross beam, and through precise matching of a program, the speed of the gold foil is accurately controlled. The gold foil rolling speed is consistent with the moving speed of the trolley, so that the gold stamping work is completed; wherein the gilding moving speed, the trolley moving speed and the gilding gold foil winding drum receiving speed are consistent, gilding gold foil may extend due to heating due to gilding heating, a receiving servo motor increases a compensation coefficient, and the compensation coefficient is automatically added according to the starting heating amount so as to ensure that the gilding effect of the gilding head position is consistent with the actual height; the defects in the prior art are overcome, and a brand-new gold stamping technology is achieved from the technological means and the working method, so that the production efficiency is greatly improved, and the production cost is greatly reduced.

The tennis ball picking machine comprises a base, a ball picking assembly and a driving wheel set assembly used for driving the base to advance are arranged on the base, the ball picking assembly comprises a ball collecting bin fixedly arranged on the base, a ball inlet is formed in the front end of the ball collecting bin, and a shovel plate is arranged at the front end of the bottom of the ball inlet. According to the tennis ball picking machine, the ball collecting bin and the shovel plate are arranged, the rotating roller is arranged above the shovel plate, friction acting force is formed on tennis balls through rotation driving of the roller so that the tennis balls can roll rapidly, the front end of the shovel plate makes contact with the lower portions of the tennis balls, the balls are rolled to the guide plate through the rolling speed, and the balls are picked up through the downward gradient of the guide plate. The tennis balls are collected into the ball collecting bin, the guide plate at the rear end of the ball collecting bin is provided with a corresponding gap reserved with the ball supporting plate, it can be guaranteed that the balls smoothly roll to the ball supporting plate through downward inertia, the phenomenon that the balls are clamped by the ball supporting plate is avoided, and the balls are conveyed to the basket through the bucket type lifting mechanism.

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 embodiment of the invention discloses a rolling method for effectively relieving anisotropic titanium alloy TC4 thin strip coils and the titanium alloy TC4 thin strip coils, and relates to the technical field of alloy rolling. Comprising the steps that a leading tape is welded to the TC4 titanium alloy coiled material, the TC4 titanium alloy coiled material is placed on an uncoiling machine, and tension is formed on the TC4 titanium alloy coiled material through a tension roller; warm rolling is conducted on the TC4 titanium alloy coiled material at the temperature of 650-750 DEG C, the rolling speed is 500-800 mm / s, the single-pass reduction rate is 10-20%, reciprocating rolling is conducted under the condition that the asynchronous ratio of an upper roller to a lower roller is 1-1.3, and heat preservation is conducted on the TC4 titanium alloy coiled material after each pass of rolling is completed in a furnace for 10-25 min; and the TC4 titanium alloy coiled material rolled to the required thickness is subjected to annealing treatment under the argon protection condition, the annealing treatment temperature ranges from 850 DEG C to 950 DEG C, and the heat preservation time ranges from 20 min to 40 min. The rolling method is high in production efficiency, the difference between the tensile strength of the obtained titanium alloy plate in the direction parallel to the rolling direction and the tensile strength of the obtained titanium alloy plate in the direction perpendicular to the rolling direction is small, and anisotropy of the titanium alloy plate is greatly relieved.

The utility model relates to a device for adjusting the take-up speed of an aluminum busbar, which comprises a base and a first guide wheel arranged on the upper side portion of the base, a swing arm capable of swinging is arranged in the middle of the base, and a second guide wheel is arranged on one side, away from the first guide wheel, of the swing arm. An aluminum busbar is guided and conveyed through the first guide wheel and the second guide wheel, a linkage gear is arranged behind the other side of the swing arm, a potentiometer is arranged below the linkage gear, and a potentiometer gear of the potentiometer is meshed with the linkage gear. The device is simple in structure, reasonable in design and convenient to use, the swing angle of the second guide wheel and the swing arm is converted into the resistance value change of the potentiometer, the take-up speed of the take-up device is adjusted through the feedback resistance value change, the take-up device is made to be matched with the rolling speed, and therefore the problem that the front conveying speed and the rear conveying speed of a strip are not consistent is solved.

The invention provides a high-quality special steel rolling method and device, electronic equipment and a storage medium, and relates to the technical field of rolling, and the high-quality special steel rolling method comprises the steps that the rolling speed of each rolling mill is obtained according to rolling parameter information and rolling mill speed correction coefficients, the rolling mill speed correction coefficient comprises a speed correction coefficient of each roughing mill and a speed correction coefficient of each finishing mill; the rolling force is obtained through the rolling parameter information, and the rolling force is used for representing the pressure applied to the steel by the rolling mills; the rolling moment and the rolling power are obtained according to the rolling force, and the rolling moment is used for representing the moment when each rolling mill completes the rolling process; and controlling each rolling mill according to the rolling speed, the rolling force, the rolling moment and the rolling power to obtain a high-quality special steel rolled product. According to the method, the quality of the finally obtained high-quality special steel is improved by controlling the parameters influencing the product quality in the rolling process.

In a roll stand (1), a rolling material (2) made of metal and having a rolling material leading edge (6) is to be rolled. A time of entry (t3), a rolling speed (vW) and a rolling moment (MW) are known to a control device (7) for the roll stand (1) before the rolling material leading edge (6) runs into the roll stand (1). Before a starting time (t2), which is before the entry time (t3), the control device (7) determines, for a period from the starting time (t2) to the entry time (t3), a moment profile (M) for a roller (3) of the roll stand (1) via a drive (4) driving a drivetrain (5). It controls the drive (4) during the period in accordance with the determined moment profile (M). The control device (7) determines the moment profile (M) starting from a starting state (x2), at the starting time (t2), of the drive (4), of the drivetrain (5) and of the driven rollers (3) of the roll stand (1) such that the driven rollers (3) of the roll stand (1) are acted on by the drivetrain (5) with the rolling moment (MW) at the entry time (t3) and rotate with a circumferential speed (vU) adapted to the rolling speed (vW).

The invention relates to the field of seamless steel pipe production, in particular to a high-performance seamless steel pipe intelligent production device which comprises a workbench, a connecting block, a discharging strip set and the like. The workbench is connected with a connecting block; and the connecting block is connected with a blanking strip group. According to the seamless round pipe and square pipe cutting device, seamless round pipes and seamless square pipes to be cut can be supported through cooperation of the discharging strip sets and the limiting strips, cutting stability is kept, after cutting is completed, the cut seamless round pipes or seamless square pipes can be guided downwards in an inclined mode and stacked through the obliquely-arranged discharging strip sets, and the seamless round pipes or seamless square pipes can be cut through the discharging strip sets. The cut seamless round pipes or seamless square pipes do not need to be manually picked up and stacked, the production efficiency is improved, the seamless round pipes rolling along the discharging strip set are intercepted and buffered through the intercepting assembly, the situation that the rolling speed of the seamless round pipes on the discharging strip set is gradually increased is avoided, and finally the discharging strip set is rapidly punched down.

The invention relates to a high-precision dynamic control method for wires and bars and a four-roller reducing and sizing rolling system, and belongs to the technical field of steel rolling. Aiming at the problems of insufficient dimensional precision, surface defects and low ovality of the existing two-roller and three-roller reducing and sizing mill, the invention provides a scheme for integrating a reducing rolling mill unit and a four-roller sizing mill, the single-pass compression ratio of the reducing rolling mill is 1.10-1.35, the single-pass compression ratio of the four-roller sizing mill is 1.001-1.10, and + / -0.001 mm precision control is realized by combining a dynamic roll gap adjusting system. Through an ellipse-circle-multi-section arc pass system, a roll gap compensation algorithm and Ki integral, the dimensional deviation is corrected in real time, finally, the dimensional precision of a finished wire and bar reaches + / -0.05 mm, the ovality is smaller than 0.05, the rolling speed is 140 m / s and 25 m / s at most, the service life of a roll collar is prolonged by 30%, and the production cost is reduced by 15%.

The present invention belongs to the technical field of non-oriented silicon steel production and discloses a method for improving the cold-rolled edge quality of high-grade non-oriented silicon steel burr coils. The method comprises: cold rolling using a multi-stand continuous rolling mill or a single-stand reversible rolling mill for 5 to 7 rolling passes, controlling the flatness of the plate after the first, second, and final rolling passes to meet a specific formula; in addition, the rolling speed of the first pass, the emulsion flow rate of the first and second passes, and the original roughness of the mill work rolls can be further controlled. The present invention achieves the purpose of controlling rolled edge cracks and reducing edge waves by adopting a large edge wave rolling mode and adjusting the rolling speed, emulsion flow rate, and the original roughness of the work rolls, thereby achieving optimal cold-rolled edge quality of the burr coils and improving production efficiency and product yield.