11 results about "Hot strip mill" patented technology

The invention provides a hot continuous rolling finish rolling section cooling method, system and equipment and a storage medium, and relates to the technical field of metallurgy hot rolling control, and the method comprises the steps that according to a product outline and a rolling schedule of rolled strip steel in a hot continuous rolling finish rolling section, the proportional relation between the inlet cooling water amount and the outlet cooling water amount is determined; based on the thermal load distribution of each area section of a roller in the hot continuous rolling finish rolling section and the width parameter of rolled strip steel, the distribution modes of inlet cooling water and outlet cooling water are determined respectively; when the hot continuous rolling finish rolling section is cooled according to the proportional relation and the distribution mode, rolling process parameters of the hot continuous rolling finish rolling section are obtained; and according to the rolling process parameters, in combination with a preset roller system model and a strip steel metal model, coupling control is conducted on the proportional relation and the distribution mode of the inlet cooling water amount and the outlet cooling water amount, and meanwhile fine adjustment is conducted on the inlet cooling water amount and the outlet cooling water amount till the hot continuous rolling finish rolling section meets the machining requirement. The cooling effect of the hot continuous rolling finish rolling section is improved.

The application discloses a kind of plate strip hot rolling mill electric screwdown anti-rotation devices, including rolling mill housing, thrust bearing seat and upper roll bearing seat, upper roll bearing seat is set in the lower side of thrust bearing seat, and protective cover is arranged between thrust bearing seat and rolling mill housing, and the screwdown screw connected with thrust bearing seat is arranged in the lower side of rolling mill housing, one support is respectively arranged in the opposite side surface of two thrust bearing seat, anti-rotation crossbeam is installed between two supports, long hole is symmetrically opened in the side surface both ends of anti-rotation crossbeam, pin hole is opened in the side surface of support corresponding with long hole, and support and anti-rotation crossbeam are fixed by pin, and detection device is arranged on anti-rotation crossbeam.In the thrust bearing seat installation support, the thrust bearing seat of both sides is connected by anti-rotation crossbeam, can play the role of preventing the rotation of thrust bearing seat, effectively avoid the problem that traditional anti-rotation bracket is seriously scratched on the surface of housing window.

The invention relates to a method for controlling or regulating the temperature of a steel strip during hot forming in a hot strip mill train. The superior control or regulating unit has a process model which determines a temperature development of the hot strip in advance. The target values of the individual units are adjusted on the basis of the predetermined temperature development.

The present application relates to a kind of first steel hit rate control method of hot strip mill equipment, the hot strip mill equipment includes N frame that can be supplied with strip and first steel hit rate control system;Its characterized in that, the first steel hit rate control method of the hot strip mill equipment includes the following steps that the first steel hit rate control system executes: with zero value self-learning module receives the first steel big data module sent historical first steel data, obtains zero value self-learning value ΔL i ;Estimate the deformation resistance deviation average value Δki of each frame rolling force;Estimate the thickness deviation Δhi of each frame;The present application is based on the model of strip threading self-adaption, in combination with multiple algorithms, more accurate calculation rolling force, bending force, the deviation correction coefficient of roll gap, collects and comprehensively considers multiple first steel hit deviation, obtains zero value self-learning coefficient;Can obtain more than the set number of three previous frames, improve the hit rate of first steel.

The invention discloses a method for correcting and setting in the threading process of a hot continuous rolling finishing mill group, which comprises the following steps of: sampling the actual rolling force of a rack and calculating an actual rolling force locking value, calculating and setting the roll gap correction amount of a next rack, reversely calculating and compensating the speed correction amount of a previous rack according to the roll gap correction amount of the next rack, and correcting and setting the speed correction amount of the previous rack. And according to the adjusting logic, the steel biting events are sequentially transmitted step by step along the racks, and after steel biting of all the racks is completed, all the temporary correction values are reset. The method has the beneficial effects that based on real-time sampling data, accurate roll gap correction is carried out on the next rack, and efficient control over the outlet head thickness is achieved, so that the head thickness precision is improved, meanwhile, expansion and transmission of thickness deviation are restrained from the source, the situation that the whole-line rolling steady state is damaged due to violent adjustment of a downstream rack is avoided, and the production efficiency is improved. Therefore, product quality defects and even production accidents such as rolling deviation and belt breakage are prevented, the control precision is high, and the correction amount is accurate.

The invention relates to a method and system for optimizing the hot charging rate of a casting blank of a hot-rolled strip production line, belongs to the technical field of hot-rolled strip preparation processes, and solves the problems that the overall hot charging rate of casting blank recharging in the existing hot-rolled strip production line is low, and the stack position recharging sequence of the casting blank at the same casting time lacks a reasonable dynamic adjustment mechanism. According to the method for optimizing the hot charging rate of the casting blank of the hot-rolled strip production line, the hot-rolled strip production line comprises more than one recharging stack position, and the stack position sequence determining process of charging the casting blank comprises the following steps that (1) the initial temperature T < initial > of the cut casting blank is determined; (2) the real-time temperature T of the single casting blank in the conveying process and the stacking state is calculated according to the initial temperature T < initial > and the composite temperature drop; and (3) the casting blank charging stacking position sequence is dynamically calculated in real time. And the hot charging rate of the hot charging steel grade casting blank continuously produced at a single casting time is improved.

The invention provides a method and system for identifying the tail position of an intermediate billet of a hot continuous rolling hot coil box, and the method comprises the steps: S1, collecting an image of the hot continuous rolling intermediate billet, and carrying out the extraction to obtain an optimal frame image; s2, preprocessing the optimal frame image, and extracting to obtain an image after the hot continuous rolling intermediate billet is rolled; s3, traversing all coordinate points of the rolled image of the hot continuous rolling intermediate billet, and establishing a coordinate point set; extracting the coordinate value of the minimum X of each coordinate point set to form a new coordinate point set; s4, according to the new coordinate point set, a tail contour fitting straight line of the hot continuous rolling intermediate billet is obtained through fitting; and calculating to obtain the tail contour motion radian of the hot continuous rolling intermediate billet, further obtaining an included angle between a tail contour fitting straight line and a preset horizontal line, judging whether the included angle is in a preset range or not, and further realizing risk control processing. The rolling stability and the product quality are remarkably improved, the scrap steel rate and the energy consumption are reduced, and meanwhile an automatic production closed loop is constructed.

The invention discloses a demisting device and method for a hot continuous rolling production line, and belongs to the field of steel rolling. According to the technical scheme, the demisting device of the hot continuous rolling production line comprises a demisting box, a plurality of pumping and discharging fans are arranged in the demisting box, a suction inlet for forming mist is formed in the bottom of the demisting box in an open mode, a movable mist discharging fan is movably arranged below the suction inlet, the air pumping direction of the movable mist discharging fan is from bottom to top, and the air pumping direction of the movable mist discharging fan is from bottom to top. And the water is discharged into the demisting box. The suction inlet with the open bottom expands the mist adsorption range, the movable mist exhaust fan is matched with the bottom-up air draft direction, the mist generation source can be accurately aligned, mist diffusion is avoided, the suction and exhaust fan and the movable mist exhaust fan form an up-and-down linkage suction and exhaust structure, the flow guide effect on the mist concentration generation position is enhanced, the demisting efficiency is greatly improved, and the demisting effect is improved. And mist escape is reduced.

This invention discloses a method and system for controlling the replacement of work rolls in a 1580 hot strip mill finishing mill. The method includes the following three processes occurring simultaneously at the start of roll replacement preparation: 1. The roll replacement trolley begins to move from the initial position E3 to the target position E9; 2. The mill equipment sequentially performs roll return to zero, main shaft positioning, and unloading; 3. The mill equipment sequentially lifts the looper and deploys the inlet and outlet guides; During roll removal, the upper support balance cylinder and the work roll track beam lifting cylinder simultaneously lift; the work roll balance cylinder activates during the lifting of the work roll track beam and the upper support balance cylinder; During roll loading, the upper support balance cylinder, the work roll balance cylinder, and the work roll track beam lifting cylinder simultaneously descend and retract; The roll replacement end marker is adjusted from the roll replacement trolley fully returning to the initial position E3 to the roll replacement trolley exiting a certain area of ​​the mill. This invention improves the efficiency of work roll replacement in the 1580 finishing mill, significantly shortens the roll replacement time, and effectively increases the operating rate of the hot rolling line.

The present application relates to a kind of hot rolling hot coil box simple roll transfer method, utilize push roll and No.1 coil roller B roll to be lifted to higher than the roller surface of No.2 coil roller to the steel coil, make No.1 coil roller and No.2 coil roller simultaneously speed down, to its speed fall behind the speed of finishing mill and produce speed difference, steel coil is dragged to No.2 coil roller under the speed difference and realizes roll transfer.There is following beneficial effect: simple mechanical structure, less investment;Small amount of overhaul and maintenance work, low maintenance cost;Low failure rate in production process, high production efficiency.