35 results about "Slab caster" patented technology

The present application relates to a kind of slab crystallizer cast slab sticking detection method, belong to metallurgical continuous casting method technical field.The technical scheme of the present application is: install laser range finder and obtain the height variation of crystallizer mould powder slag face, obtain the characteristic spectrum of the height variation of slag face with time by fast discrete fourier transform, compare it with the frequency of crystallizer vibration, directly judge whether the cast slab sticking in crystallizer occurs.The beneficial effects of the present application are: without crystallizer modification, its installation, maintenance is convenient, using direct detection means to judge the occurrence of cast slab sticking, its prediction result is accurate and reliable, cast slab sticking phenomenon can be detected immediately after occurrence, reduce the risk of missing steel caused by late alarm, can reliably, accurately, quickly carry out crystallizer sticking and missing steel prediction.

The invention discloses an online inspection method for a slab continuous casting machine crystallizer, and belongs to the technical field of slab continuous casting production equipment detection. According to the method, comprehensive and accurate detection of the running state of the crystallizer is achieved by defining the inspection time and standardizing inspection items and judgment standards, potential faults are checked in time, and the casting blank quality and the production continuity are guaranteed. The method mainly aims at solving the problems that in the prior art, a slab continuous casting machine crystallizer is not comprehensive in inspection, insufficient in precision and lack of a system process.

The present application relates to the field of metallurgy, in particular to a method for improving the success rate of tundish quick change in slab continuous casting machine. The steps include ensuring that the mold is only left with a liquid slag layer and controlling the thickness of the liquid slag layer before the final casting of the old tundish, adding starting slag into the mold and fully melting it into liquid state; picking out the slag ring and slag strip in the mold after the final casting of the old tundish, and melting the fine slag strip; controlling the amount of water sprayed in each link of the straightening machine at the time of stopping and straightening; improving the lifting speed of the tundish and the walking speed of the tundish car during the tundish quick change process, setting the pre-centering scale and pre-centering rod for pre-centering; smearing silicone on the corner seam of the mold before the starting of the new tundish, and inserting the flow barrier and iron sheet into the mold; controlling the time of starting, the slope of the speed-up rate of straightening, and the holding time of the casting speed after the starting of the new tundish. The application of the present application in the tundish quick change process can shorten the quick change time, reduce the generation of waste billets, reduce the risk of accidents, and improve the success rate of quick change.

This application discloses a method, device, and medium for controlling fluctuations in the liquid level of a slab continuous casting machine's crystallizer, relating to the field of process flow. The method involves real-time analysis of the liquid level signal acquired by the liquid level control system using Fourier transform. The frequency of periodic fluctuations in the crystallizer liquid level is compared, and the relationship between the corresponding amplitude and a preset amplitude is obtained through a spectrum diagram. This allows for timely adjustment of the liquid core space to suppress fluctuations. In the early stages of periodic fluctuations in the crystallizer liquid level, specific changes in fluctuation data are detected at the microscopic level, enabling advance prediction of specific spectral signs before fluctuations occur. Compared to existing systems that require complex control systems and associated control models for adjustments during periodic fluctuations, resulting in higher maintenance costs and greater accuracy variations, this method allows for corresponding compensation control processing in the early stages of fluctuations. This prevents late compensation from leading to excessively large amplitudes that are difficult to suppress, reducing maintenance costs and extending equipment lifespan.

The application discloses a method for reducing the time of quick change of a double-flow large slab caster's tundish, which comprises the following steps: when the last furnace of the old tundish is in use, the speed of the remaining steel in the tundish is reduced, and a new tundish vehicle is driven to the vicinity of the old tundish; when the new tundish is in place, the old tundish is quickly centered by using a handheld operation box while the whole flow of the ladle is poured; the large ladle is poured, and when the tundish reaches the tonnage requirement after pouring, the tundish starts to pour; after the tundish is poured, the mold is checked, the pulling speed is gradually increased, and the slide plate surface is argon sealed. The application is used for the quick change of the tundish of the double-flow large slab caster, the steps are strictly followed by the team, the occurrence of accidents is reduced, the quick change time of the tundish is controlled within 5.5 minutes, the operation rate of the continuous casting is effectively improved, the production cost is reduced, and the efficiency of the caster is improved.

The application provides a method for smelting ultra-low sulfur steel with low iron water consumption, comprising: converter smelting: adding iron water and scrap steel into a converter for converter smelting to obtain molten steel and ladle top slag; converter tapping: transferring the molten steel and the ladle top slag from the converter, adding lime, alloy, aluminum block and modifier into the transferred molten steel and the ladle top slag to obtain pretreated molten steel and ladle top slag; ladle refining: transferring the pretreated molten steel and the ladle top slag into a refining furnace, adding scrap steel and recovered ladle slag, and performing refining to obtain refined molten steel; RH vacuum treatment: performing vacuum treatment on the refined molten steel to obtain molten steel to be cast; and continuous casting: casting the molten steel to be cast through a slab continuous casting machine to obtain ultra-low sulfur steel. The molten iron does not need to be pretreated, and the ultra-low sulfur steel can be obtained under the condition that the iron water consumption is 680 kg-830 kg per ton of steel, the mass percentage of sulfur is less than or equal to 0.0015%, the production efficiency and quality are improved, and the environmental protection benefit is improved.

This invention discloses a method for reducing bulging defects in continuously cast slabs of low-carbon boron-containing steel, mainly addressing the technical problem of high bulging defect incidence in existing continuously cast slabs of low-carbon boron-containing steel. The technical solution is as follows: a method for reducing bulging defects in continuously cast slabs of low-carbon boron-containing steel includes: 1) Converter smelting, using a top-and-bottom blowing converter, with the mass percentage of the input metal raw materials being 75%-90% molten iron and the remainder being scrap steel; 2) Converter tapping, tapping steel immediately after converter blowing, using a ladle that is not newly constructed or has not undergone minor repairs; 3) Continuous casting, where the molten steel in the ladle is distributed to the crystallizer of the slab continuous casting machine via an intermediate ladle and then poured into the slab continuous casting machine to obtain the continuously cast slab; 4) The casting speed of the continuous casting machine during the continuous casting process is 0.8-2.0 m / min. The method of this invention reduces the hydrogen content of the molten steel in the intermediate ladle to 0.000281%, and reduces the bulging defect incidence of the continuously cast slab to 0.78 times / month.

This invention relates to a traverse trolley for a climbing slab continuous casting machine, comprising a frame, roller assemblies, and anti-slip components. Multiple roller assemblies are mounted on the frame and arranged evenly along the length of the frame, with the roller assemblies gradually increasing in height along the billet discharge direction. The anti-slip components are located at one end of the frame away from the billet discharge direction. A moving component is mounted at the bottom of the frame and can reciprocate along a track along the width of the frame. This invention perfectly solves the problem of the height difference between the billet discharge roller surface and the hot delivery roller surface without affecting the billet discharge rate, avoiding the problems of increased equipment weight, high operating costs, and slow billet discharge rhythm caused by adding lifting devices. Moreover, this invention has a simple structure, requiring only simple modifications to existing traverse trolleys, reducing equipment investment costs and significantly shortening equipment upgrade and modification time.

The invention discloses a production method of a peritectic steel continuous casting sheet billet. The technical problem that when an existing sheet billet continuous casting machine is used for producing the peritectic steel continuous casting sheet billet with the w [Al] in the steel being 0.022%-0.042%, the corner crack occurrence rate of the continuous casting sheet billet is high is mainly solved. According to the technical scheme, the production method of the peritectic steel continuous casting sheet billet comprises the steps that (1) a top-bottom combined blowing converter is adopted for smelting, argon is blown from the bottom in the whole smelting process, and the argon flow is 0.05-0.10 Nm < 3 > / (min.t); (2) controlling the smelting end point of the converter; 3) immediately tapping after the converter blowing is finished; 4) transporting molten steel in the steel ladle to an argon blowing station, and uniformly stirring the molten steel; (5) transporting the molten steel in the steel ladle to an LF furnace to carry out molten steel temperature regulation and control and component regulation and control; and 6) carrying out slab continuous casting on the molten steel to obtain a continuous casting slab. The corner crack occurrence rate of the peritectic steel continuous casting sheet billet produced through the method is smaller than or equal to 0.41%.

The invention discloses a treatment method for a frozen blank of a straight-arc-shaped slab continuous casting machine. The treatment method comprises the steps that a casting blank is cooled; hoisting out the crystallizer; cutting the casting blank between the 7 # section and the 8 # section by using an accident cutting knife, keeping the roll gap of the 1-7 # section pressed down and powering off the pulling-straightening roller, lifting the roll gap of the 8-13 # section, lifting the pulling-straightening roller of the 8 # section, and pulling out the casting blank of the horizontal section by using the pulling-straightening roller of the 9-13 # section; then, a dummy ingot is manually conveyed, a dummy ingot rod is inserted into the lower portion of the remaining casting blank in the fan-shaped section, the casting blank is jacked, the roller gap of the 1-7 # section is lifted, and power supply of the pulling-straightening roller is restored; the casting blank is cut between the bending section and the sector section 1 # section through an accident cutting knife; hoisting grooves are formed in the two narrow sides of the casting blank through an accident cutting knife; and a lifting appliance penetrates through the lifting groove to connect the casting blank to a travelling crane. The method has the advantages that the blank stagnation accident treatment time is effectively shortened, damage of blank stagnation accident treatment to continuous casting machine equipment is reduced, time and labor are saved, and economic losses are reduced.

The utility model relates to a fan-shaped section disc roller device of a slab continuous casting machine, and belongs to the technical field of maintenance of fan-shaped section equipment of continuous casting machines in the metallurgical industry. According to the technical scheme, a rotating support (13) is rotationally connected to a fan-shaped section overhauling platform, a sliding rail (12) is fixed to the rotating support (13), a sliding block (11) is connected to the sliding rail (12) in a sliding mode, an arc-shaped ring (8) is hung on the sliding block (11) through a lifting appliance (10), a driven roller (1) is rotationally connected to the two ends of the arc-shaped ring (8), and a driving roller (2) is rotationally connected to the middle of the arc-shaped ring (8). The two driven rollers (1) and the driving roller (2) are located on the inner arc face of the arc-shaped ring (8), and the two driven rollers (1) and the driving roller (2) form an arc-shaped disc roller structure in three-point contact with the fan-shaped section roller (15). The device has the beneficial effects that the rotation state of the fan-shaped section roller can be quickly checked and accepted, manual roller coiling is replaced, and the stability of the fan-shaped section after the fan-shaped section is on line is improved.

This invention belongs to the field of metallurgical technology, and particularly relates to a two-stage variable speed cutting control method for a slab continuous casting machine's flame cutter. It includes the following steps: S1, setting the low-speed cutting speed VD, the high-speed cutting speed VG, and the temperature threshold TF, and starting the variable speed control program; S2, collecting temperature distribution data in real time through a temperature detection unit, and calculating the actual width LZ of the left edge low-temperature zone and the actual width LY of the right edge low-temperature zone after partitioning; S3, calculating the left edge low-speed cutting duration TZ and the right edge low-speed cutting duration TY; S4, cutting at the low-speed cutting speed VD in the left and right edge low-temperature zones; and cutting at the high-speed cutting speed VG in the central high-temperature zone; S5, resetting the flame cutter after the slab is cut. This invention can adaptively adjust the cutting parameters according to the actual temperature distribution of the slab, effectively shortening the all-oxygen cutting time and reducing fuel gas and oxygen consumption while ensuring cutting quality. It is suitable for dual-gun cutting and single-gun cutting modes in slab continuous casting machines.

The invention relates to the technical field of aluminum alloy smelting, in particular to a thick slab continuous casting machine soft reduction guide roller which comprises a lower guide roller body, a movable frame is fixedly connected to one side of the lower guide roller body, a storage box is arranged on the movable frame in a sliding fit mode, a cover plate is rotatably connected to the storage box, and a fixed frame is fixedly connected to the interior of the storage box. The air injection mechanism is fixedly connected to the fixing frame, the guide roller maintenance frame is arranged on one side of the fixing frame in a sliding fit mode, the swing frame is arranged on one side of the guide roller maintenance frame in a sliding fit mode, and the impurity seat is fixedly connected to one side of the bottom end of the storage box. Meanwhile, the brush plate at the bottom of the guide roller maintenance frame is driven to be matched with high-pressure air, aluminum alloy slag attached to the surface of the lower guide roller can be effectively treated, and in the use process of gently pressing the lower guide roller through the thick slab continuous casting machine, the surface cleaning efficiency of the lower guide roller is improved, the service life of the lower guide roller is prolonged, and the casting blank qualification rate is increased.

The utility model relates to the technical field of metallurgy continuous casting devices, in particular to a movable type large ladle long nozzle quick-changing device of a thin slab continuous casting machine, and aims to solve the problem that in the installation process of a metallurgy continuous casting steel ladle long nozzle at present, due to the fact that an operation mode is not beneficial to personnel safety, large personnel injury risks are easily caused. The device comprises a travelling crane support, a quick-change assembly is arranged above the travelling crane support, a moving assembly is arranged below the travelling crane support, a bowl lock seat is fixedly connected to the upper portion of the travelling crane support, and the bowl end of the long nozzle pipe is placed on the bowl lock seat by installing the quick-change assembly and then pressed by a bowl lock catch; a bayonet lock is arranged at the upper end of the traveling bracket in the advancing direction, and after the device reaches a stop position, the bayonet lock is automatically connected with a buckle on the platform, so that the accurate positioning function of the trolley is realized. According to the device, the long nozzle can be effectively mounted without adjusting the driving direction of the manipulator at a fixed position, so that the contact between an operator and the manipulator is effectively prevented, and the safety of the operator is ensured.

The utility model discloses a cooling and spraying device for a rear-area roller way of a slab continuous casting machine, and belongs to the technical field of rear-area roller ways of slab continuous casting machines. The rear-area roller way comprises at least one group of division roller ways, and each division roller way comprises a roller way support; the cooling spraying device comprises a cooling water main pipeline connected with a continuous casting machine outer net water pipeline, a main pipeline control valve is arranged on the cooling water main pipeline, a plurality of cooling water branch pipelines are arranged on the downstream portion of the main pipeline control valve, and each cooling water branch pipeline is correspondingly arranged at the corresponding set of work division roller way. A branch pipeline control valve is arranged at the joint of the cooling water main pipeline and the cooling water branch pipeline, a plurality of bearing seat spraying pipelines and a plurality of roller spraying pipelines are arranged at the downstream of the branch pipeline control valve, the bearing seat spraying pipelines are respectively arranged on bearing seats at the two ends of each roller, and one roller spraying pipeline is arranged on one side of each roller in parallel; the technical problem that in the prior art, the cooling water amount of a continuous casting machine rear-area roller way is insufficient, and the rear-area roller way is damaged at high temperature is solved.

The utility model discloses a protection device and system for a slab continuous casting machine, relates to the field of steel making, and aims to solve the problem that when the slab continuous casting machine works for a long time, a brake clearance of a brake component of an electromagnetic brake changes along with the brake clearance, and the change of the brake clearance also leads to the increase of the working voltage of the electromagnetic brake. Therefore, according to the scheme, the brake clearance of the brake component of the corresponding electromagnetic valve is measured through the brake clearance measuring device, the voltage value of the loop where the corresponding electromagnetic brake is located is measured through the voltage collecting device, the fault condition of the electromagnetic brake is verified at the same time from two aspects, the controller can find out the faulted electromagnetic brake more accurately, and the fault detection accuracy is improved. And a power supply loop where the fault electromagnetic brake is located is controlled to be disconnected, so that the phenomenon that part of fault electromagnetic brakes burn out motors connected with the fault electromagnetic brakes due to changes of brake gaps is prevented.

The application discloses a slab continuous casting machine sealing and guiding ingot method, and specifically comprises the following steps: 1) sealing and guiding ingot preparation; 2) ingot head positioning; 3) surface cleaning and initial sealing; 4) gap filling and sealing; 5) nail scrap paving; 6) reinforcement protection; 7) finished product protection; and 8) operation control. The application aims to provide a slab continuous casting machine sealing and guiding ingot method, which realizes fine control of sealing and guiding ingot operation by defining operation requirements and parameter standards of each process, ensures sealing effect and structural stability, ensures smooth casting and convenient guiding ingot removal, and reduces production risks.

The utility model relates to the field of slab continuous casting machine equipment, in particular to a split type oil cylinder connecting device. The device comprises an oil cylinder support, and a pin shaft is arranged on the oil cylinder support. The oil cylinder support is of a split structure and comprises two upper covers and a lower base, and each upper cover is fixed to the lower base through an upper countersunk bolt and a lower countersunk bolt. The upper cover is provided with a boss and is provided with a groove corresponding to the lower seat, so that a concave-convex joint surface is formed when the upper cover and the lower seat are assembled. During point inspection, the pin shaft and the four bolts shielded by the flat head can be subjected to point inspection and maintenance only by detaching the four bolts on the upper cover and taking down the upper cover, so that the point inspection and maintenance time is greatly shortened, equipment accidents are avoided, the structure is reasonable, and stable operation of slab continuous casting machine pendulum shear equipment is ensured.

The application discloses a slab continuous casting machine sector segment on-line quenching device and relates to the technical field of steelmaking continuous casting. The device efficiently utilizes the cooling efficiency of cooling water by forming forced convection physical phenomenon between the quenching cooling water and the slab surface, effectively reduces the slab surface temperature, and solves the technical problem of the adverse effect of slab hot charging cracks on hot charging temperature, hot charging proportion and hot charging efficiency in the related art. The device comprises at least one group of groove plates, each group of groove plates comprises two groove plates arranged oppositely, the two groove plates of each group are clamped to form a channel, the channel is used for passing the slab through the last sector segment of the slab continuous casting machine, each groove plate is provided with a cooling water groove, the length direction of the cooling water groove is arranged along the width direction of the slab, the circumferential side opening of the cooling water groove is arranged towards the other groove plate, and the length side opening of the cooling water groove is configured to be connected with cooling water, so that the cooling water flows through the surface of the slab.

The utility model relates to the technical field of plate casting machine dies, in particular to a plate casting machine die opening and closing structure which comprises a die plate, a through groove is formed in the middle of the upper surface of the die plate, stand columns are arranged at the positions, close to the four corners, of the upper surface of the die plate, a plurality of extrusion blocks are arranged on a rotating shaft rod, and a handle is arranged at one end of the rotating shaft rod. Sliding rods are further symmetrically arranged between the stand columns located at different ends, limiting plates are further arranged between the corresponding stand columns, a plurality of supporting plates are arranged between the two sets of sliding rods, a partition plate is arranged between every two adjacent supporting plates, and the supporting plates communicate with the partition plates through springs; according to the mold opening and closing structure of the plate casting machine, the mold plate is arranged, under the cooperation of the stand column with the limiting plate and the cooperation of the two sets of sliding rods and the two sets of rotating shaft rods, a grip rotates, direction adjustment of an extrusion block is achieved, then extrusion cooperation of a supporting plate is achieved, and extrusion cooperation of a positioning plate and a partition plate is achieved under the action of multiple sets of springs; and the casting plates used by the battery can be conveniently extruded and combined.

The invention discloses a multi-roller independent lifting fan-shaped section device and a slab continuous casting machine. The fan-shaped section device and the slab continuous casting machine comprise an inner arc frame (3), an outer arc frame (6), a placing supporting body (7), an inner arc roller and an outer arc roller. The inner arc frame is rigidly connected with the outer arc frame, all the inner arc rollers are installed on the basis of the inner arc frame, and each inner arc roller can independently conduct downward pressing and lifting actions. In the casting operation process of a continuous casting machine, the pressing-down or lifting-up height of each inner arc roller can be independently adjusted one by one according to the actual condition, the roller gaps are adjusted step by step, the roller gaps are adjusted very flexibly, and therefore the problem that pressing cannot be achieved due to the fact that the deformation resistance of a casting blank is sharply increased when multiple rollers are pressed down at the same time can be effectively solved.

The invention discloses a secondary cooling control method for a slab continuous casting machine to avoid transverse cracks of corners of slabs, which comprises the following steps of: dividing a nozzle in a vertical section area of the slab of the continuous casting machine into three areas, namely a wide surface middle area, a wide surface edge area and a narrow surface corner area; and according to the width of the casting blank and the type of produced steel, the nozzle in the wide face edge area of the first control loop or the nozzle in the narrow face corner area of the first control loop or the nozzle in the middle area of the wide face of the second control loop is selected to conduct secondary cooling treatment on the casting blank, so that the corner of the casting blank reaches the required temperature. By means of the method, the problem that an existing controlled cooling method easily causes transverse cracks of the corners of the casting blank can be solved.

The utility model relates to continuous casting machine liquid level calibration technical field, specifically is a kind of slab continuous casting machine liquid level calibration device;Including support cross plate, surface is marked with lifting rod of scale and the calibration base plate connected with it, there is also the positioning mechanism of control lifting rod lifting;Positioning mechanism is by positioning sleeve, positioning hole, positioning lever, spring and positioning chuck head constitute;Support cross plate is equipped with level bubble instrument and adjusting bolt, also has long strip through -hole cooperation sliding plate and determines height difference, positioning lever outer end is equipped with clamping block, lifting rod outer wall has annular clamping groove, when using, support cross plate and lifting rod cooperation quick determination calibration position, positioning mechanism is conveniently controlled lifting positioning, simplifies operation procedure, reduces artificial error, simultaneously, level bubble instrument and adjusting bolt auxiliary leveling, improve calibration accuracy.

This utility model discloses an energy-harvesting and reusing slab continuous casting machine, applied to the cooling section of a slab continuous casting machine. A filtration mechanism is installed at the bottom of the cooling section. A conveying mechanism is connected to the right side of the filtration mechanism, a heat exchange mechanism is connected to the right side of the conveying mechanism, and a storage mechanism is connected to the right side of the heat exchange mechanism. A supply mechanism is connected to the top of the storage mechanism, and the supply mechanism is connected to the heat exchange mechanism. Through the coordinated operation of multiple structures such as the filtration mechanism, conveying mechanism, heat exchange mechanism, storage mechanism, and supply mechanism, the heat energy harvesting device uses heat exchanger technology to filter the heat energy in the cooling water and transfer it to the working medium. The working medium is transported to the storage device through pipelines, improving energy utilization efficiency. By collecting and reusing the heat energy generated during continuous casting, energy utilization efficiency is significantly improved, and production costs are reduced. This reduces dependence on external energy sources and lowers production costs.

This invention belongs to the field of steelmaking continuous casting technology, and relates to an online diagnostic method for the crystallizer of a slab continuous casting machine. The method involves inspecting and measuring the crystallizer body during the casting interval. The diagnostic criteria are as follows: the corner gap of the crystallizer copper plate ≤ 0.3mm; the absolute value of the difference between the length of one side of the inner and outer arcs of the crystallizer copper plate and the standard length of one side of the inner and outer arcs of the crystallizer copper plate ≤ 1mm; the absolute value of the relative thickness difference between the inner and outer arcs and the left and right sides of the crystallizer copper plate ≤ 3mm; the wear value of the narrow face of the crystallizer copper plate ≤ 1mm; the straightness of the crystallizer copper plate ≤ 0.5mm; within 450mm of the top edge along the length direction of the crystallizer copper plate, each crack or scratch must be ≤ 3.0mm wide, ≤ 10mm long, and ≤ 0.5mm deep, with a number of cracks or scratches ≤ 2; outside this area, each crack or scratch must be ≤ 3.0mm wide, ≤ 50mm long, and ≤ 0.5mm deep, with a number of cracks or scratches ≤ 2; and the area of ​​plating cracks at the meniscus ≤ 30×30mm. 2 If the area of ​​coating peeling off at the meniscus is 0, it meets the diagnostic criteria and is considered qualified; otherwise, it is considered unqualified.

The present application belongs to the field of steelmaking continuous casting, and relates to a method for adjusting the rectangularity of a slab continuous casting mold, which can reduce or even eliminate the increase of the joint gap caused by the change of the rectangularity during the on-line use of the mold, prevent the start-up leakage and steel clamping leakage of the continuous casting machine, reduce the unplanned casting interruption frequency of the continuous casting machine, improve the operation rate of the continuous casting machine, meet the factory capacity index requirement, reasonably match the production of the iron-steel interface and the steel-rolling interface, and reduce the production cost.

The invention provides a three-dimensional point cloud-based off-line measurement method for a casting flow section roller group of a slab continuous casting machine, relates to the technical field of three-dimensional measurement, and particularly relates to an off-line measurement method for a roller group of a casting flow section of a slab continuous casting machine by establishing a global measurement coordinate system based on a reference surface of a centering table, obtaining a complete three-dimensional point cloud and taking a theoretical curve model constructed by design parameters as a constraint. Spatial geometric optimization is carried out on an actually measured axis, so that an optimal theoretical roller array reference curve is reconstructed, a global reference conforming to a design intention can be directly and intelligently fitted from actually measured data, dependence on an entity standard model is eliminated, manufacturing errors and long-term deformation errors possibly introduced by the entity standard model are eliminated, and meanwhile, the method is suitable for large-scale popularization and application. The bearing seat posture deviation calculated on the basis of the optimization reference has high credibility, so that the structure adjustment can be accurately carried out, the transformation from the traditional empirical adjustment to the one-time accurate adjustment is realized, the maintenance period can be obviously shortened, and the uniform stress of each bearing seat after adjustment and the long-term stability of the roller row radian are ensured.

The invention belongs to the technical field of metal continuous casting, and particularly relates to an online detection method for a solidification tail end in the continuous casting process of an ultra-wide slab continuous casting machine. The method comprises the seven steps of determining the gravity component force Fs of an upper frame of the fan-shaped section, roughly calculating the straightening force Fj in the fan-shaped section, roughly calculating the soft reduction force Fq in the fan-shaped section, calculating the actual value Fg of the bulging force of the fan-shaped section, judging the solidification state in the fan-shaped section, calculating the theoretical value Fg of the bulging force of the fan-shaped section, and calculating the arc distance between the solidification tail end and an inlet of the fan-shaped section. The method for deducing the solidification tail end in the continuous casting process of the casting blank according to the molten steel static pressure value of the tail end of the unsolidified casting blank provides a real-time and accurate position for the pressing of the solidification tail end, improves the pressing efficiency and effect, saves energy, reduces the load of equipment, solves the technical bottleneck of inaccurate detection of the continuous casting solidification tail end, and improves the detection accuracy. And the environment-friendly and efficient performance of the continuous casting production process is improved.

The application discloses a kind of slab continuous casting machine crystallizer's automatic sealing method, comprising: 1, the dummy head is set to adjustable structure;2, the crystallizer preparation and confirmation work is adjusted to automatic operation;3, the insertion work of dummy bar is adjusted to automatic operation;4, the dummy head is automatically sealed using sealing prefabricated part.The application simplifies the operation process of dummy head adjustment, crystallizer preparation, dummy bar insertion to crystallizer sealing, reduces the labor intensity of operation, ensures the sealing effect, effectively prevents the opening pouring leakage, the failure of stripping and the abnormality in the process of dummying caused by sealing, and as far as possible better considers the pollution of sealing material to caster, controls the purpose of sealing cost.