1743results about "Melt-holding vessels" patented technology

The utility model relates to the technical field of steel smelting, in particular to a steel ladle air brick cleaning device which comprises an air supply mechanism, a conveying mechanism, an air blowing mechanism, an adjusting mechanism and a display mechanism, the display mechanism is fixedly connected with the conveying mechanism, the air blowing mechanism is fixedly connected with the conveying mechanism, and the conveying mechanism is fixedly connected with the air supply mechanism. The adjusting mechanism comprises an adjusting seat, an adjusting ring, a vertical rod and an adjusting inner cylinder, the adjusting inner cylinder can change the conveying direction of gas in the conveying mechanism under the rotation of the adjusting ring, so that the conveying conditions of different gases in the same pipeline are realized, the design is simple to operate, and the problems that oxygen and nitrogen need to be separately conveyed and blown by working personnel, and the working efficiency is low are solved. The connecting pipelines are more, and the use is more inconvenient.

The invention relates to the field of furnace lining materials, in particular to a rapid repairing material for a tapping hole and a furnace lining of an intermediate frequency furnace. The rapid repairing material comprises the following components in parts by weight: 50-70 parts of tabular corundum, 10-20 parts of fused magnesite, 8-15 parts of alumina micro powder, 3-8 parts of nano zirconia, 5-12 parts of silicon carbide, 10-15 parts of silica sol and 2-5 parts of a reinforcing agent. Wherein the reinforcing agent is titanium calcium aluminate coated with chromium nickel boride. The tabular corundum is mainly used as an integral framework; the fused magnesite is matched with the alumina micro powder to form magnesium aluminate spinel with a high melting point; the nano zirconium oxide can fill pores and is excellent in toughness; the silicon carbide has the advantages of high hardness, high thermal conductivity and high melting point; the reinforcing agent is titanium calcium aluminate coated with chromium nickel boride, although the adding amount is small, the high-temperature strength, toughness and thermal shock resistance of the repairing material can be remarkably improved, and especially the long-term corrosion resistance can be remarkably improved.

The invention discloses a novel quick-change mechanism with a flow control function for a tundish. The novel quick-change mechanism comprises a mounting part, a sliding part, a pressing part, a first driving part and a second driving part. And the functions of the stopper rod opening and closing device are integrated on the tundish quick-change nozzle device, so that the investment, the installation site, the maintenance cost, the spare part site and the cost of a set of equipment are saved. The two sets of equipment are combined into a whole, so that the number of operators in a steel mill is reduced, and meanwhile, preparation is made in advance for the subsequent steel mill if intelligent and automatic control over steel-making continuous casting is adopted, and the positive effect is achieved.

The utility model relates to the technical field of bearing disassembly metallurgy vehicle automatic joint devices, in particular to a double-four-connecting-rod lifting steel ladle bottom argon blowing automatic joint device which comprises a bottom argon blowing arc-shaped male joint, a high-temperature-resistant seal and a supporting frame, and the bottom argon blowing arc-shaped male joint is arranged above a fixing rod and can slide up and down. The device is characterized in that a four-connecting-rod lifting mechanism is arranged in the supporting frame, and the four-connecting-rod lifting mechanism is connected with the fixing rod; the bottom argon blowing arc male connector and the fixing rod are directly provided with a compression spring. The utility model has the advantages that: firstly, the spherical guide of the male connector is utilized, the sealing connection of the conical spring is reliable, the ladle car can be transformed and used on the basis of the original ladle car, the manufacturing cost is low, the sealing is reliable, steel slag blocks can conveniently flow down along the conical surface, the conical surface sealing is not easy to remain steel slag, and the conical surface is firmly matched without air leakage; and secondly, the device is simple in structure and convenient to transform and install, the working intensity of the bottom argon blowing joint of a maintainer is reduced, and the steelmaking labor productivity is improved.

The invention relates to the technical field of refractory materials, in particular to an antioxidant and application thereof in steel ladle slag line bricks, and the antioxidant comprises a Si / SiC multiphase material, modified nano Al2O3 and CaF2; the ladle slag line brick comprises an antioxidant, fused magnesite, crystalline flake graphite and phenolic resin. Si-SiC compound waste is subjected to magnetic separation and acid pickling, then a SiO2 passivation layer is formed through pre-oxidation, moisture and air in the storage period are isolated, and a titanate coupling agent is introduced to improve the wettability and compatibility with phenolic resin. P2O5 released by phosphate on the surface of the modified nano Al2O3 at a high temperature reacts with alkali (earth) metal migrated to a SiO2 oxide layer to prevent the alkali (earth) metal from forming a low-melting-point eutectic substance, CaF2 reacts with SiO2 along with temperature rise, a passivation layer is broken, internal Si and SiC are directly exposed, and boron oxide of the modified nano Al2O3 remarkably reduces activation energy and a temperature threshold value of the reaction of CaF2 and SiO2.

The invention discloses an automatic transfer robot for a ladle. The automatic transfer robot comprises a robot body, a gate-type mechanical arm system, a ladle clamping and overturning assembly, an intelligent sensing system and an electrical control system. A servo-driven X-Y plane moving device is arranged at the bottom of the robot body, so that two-dimensional free movement is realized; the door type mechanical arm system comprises symmetrical mechanical arms, a connecting beam and a lifting and telescopic driving assembly and adapts to different positions. The clamping turnover assembly adopts a three-point positioning clamping and servo turnover device and integrates a manual switching system and a weighing system, so that accurate dumping is realized; the intelligent sensing system detects the positions of an iron outlet and a material receiving opening through laser vision; and the electrical control system cooperatively controls each component to realize automatic butt joint. The robot further comprises an automatic ladle cover opening and closing mechanism and a safety protection system, and safety is improved. Through automatic and intelligent design, the molten iron transfer safety and stability are improved, and the system is suitable for casting workshops and particularly suitable for transformation of old workshops.

The invention relates to the technical field of thin-strip continuous casting production, in particular to a method for automatically controlling the height of a molten pool in the double-roller thin-strip continuous casting production process, which comprises the following steps: arranging a laser ranging module and a visual perception module; processing by an embedded processing module; establishing a molten pool height dynamic prediction model by adopting a deep learning algorithm, and outputting a molten pool height prediction value; self-adaptive sliding mode control is adopted as a main controller, and the displacement amount of the servo hydraulic stopper rod is output; and controlling the height of the molten pool based on the displacement of the servo hydraulic stopper rod. According to the method, laser is used for providing accurate distance reference, visual sensing is used for providing molten pool liquid level information, and the detection precision is improved and environmental interference is reduced through a machine vision algorithm; based on the process parameters and the real-time information of the sensor, constructing a molten pool height prediction model by using a neural network algorithm with physical constraints; and a reinforcement learning optimizer is added to adjust sliding-mode control parameters online, so that the sliding-mode control parameters adapt to working condition changes to carry out high-precision and fast-reaction molten pool height control.

To suppress embrittlement of a powder line part material by production of zirconium carbide inside a powder line part, and occurrence of sudden troubles such as hole opening of the powder line part caused by the embrittlement.SOLUTION: A molten steel flow passage 5 includes an upstream flow part 50 provided with an inflow port 3, a downstream flow part 52 provided with a discharge hole 4, and a boundary part 51 in a boundary between the upstream flow part 50 and the downstream flow part 52, wherein a circle equivalent diameter DU of the upstream flow part 50 is set to be larger than a circle equivalent diameter DL of the downstream flow part 52, the boundary part 51 is provided at a position higher than the powder line part 6, and a lining layer 7, which is composed of a material different from a zirconia / graphite material and has thickness of 8 mm or more, is provided inside the power line part 6.SELECTED DRAWING: Figure 1

The application discloses a tundish dam structure with a flow guide pipe, which comprises a straight wall, a flow guide hole, a side wall, a dam and a flow guide pipe. The straight wall, the side wall and the dam are an integrated structure, and the integrated structure is embedded in the inner wall of the tundish at both ends. The straight wall in the inner cavity of the dam is provided with a plurality of flow guide holes, and the flow guide pipe is embedded on the flow guide hole. The application effectively promotes the removal of inclusions in the impact area and the casting area of the tundish.

The invention relates to an automatic guided vehicle for molten metal transfer and a working method, and belongs to the technical field of automatic transportation equipment. The vehicle comprises a mobile vehicle body, and further comprises a bag cover opening and closing device, a butt joint bearing part, a storage battery mounting assembly, a dust removal system, a navigation obstacle avoidance system and a control system which are arranged on the mobile vehicle body, and the bag cover opening and closing device is used for automatically opening or closing a bag cover; the butt joint bearing part is used for bearing an external container; the storage battery mounting assembly is used for locking a storage battery module on the mobile vehicle body in a releasable manner; the dust removal system is arranged close to the butt joint bearing part and is used for collecting smoke dust generated by the molten metal ladle; the navigation obstacle avoidance system is used for path navigation and obstacle detection of the automated guided vehicle; and the control system controls the mobile vehicle body to stop when the navigation obstacle avoidance system detects an obstacle. The automatic guided vehicle is flexible in operation, high in automation degree, safe and reliable.

A tilting device and a melt processing method are provided that can stably discharge a melt from a container in an accurate amount. [Solution] The present invention provides a tilting device that includes a main body, a mounting section disposed on top of the main body so that a container can be placed thereon, and a tilting section that is disposed on the main body so that the mounting section can be tilted, is connected to the mounting section, and has a reducer, and that can discharge molten material from the container, and includes the steps of placing the container containing the molten material on the tilting device, preparing a transport cart below the container that contains a molten material different from the molten material, tilting the container with the tilting device, slowing down the tilting speed of the container, and discharging the molten material from the container and loading it into the transport cart. the step of tilting the container includes a step of rotating a driver of the tilting device, a step of rotating a tilting shaft member of the tilting device with the driver, and a step of tilting the container using the tilting shaft member; and the step of decelerating the tilting speed of the container includes a step of primarily decelerating the rotational speed of a rotational force generated in the driver, a step of secondarily decelerating the rotational speed of the rotational force, and a step of transmitting the rotational force, the rotational speed of which has been secondarily decelerated, to the tilting shaft member.

The invention discloses a torpedo tank car molten iron weight on-line correction system which comprises a torpedo tank weighing device used for obtaining the weight of a torpedo tank and remaining substances in the torpedo tank; the torpedo ladle lining infrared imaging device is used for acquiring contour data of the lining when the torpedo ladle is empty and contour data of residual substances in the torpedo ladle during iron returning; and the molten iron weight calculation module is used for obtaining data of the torpedo ladle weighing device and the torpedo ladle lining infrared imaging device, calculating the weight of residual substances in the torpedo ladle and obtaining the corrected weight of the residual substances in the torpedo ladle. The invention further discloses an online correction method for the molten iron weight of the torpedo tank car. The invention aims to solve the problem of on-line measurement precision of the weight of the molten iron in the iron ladle on the iron-steel interface under the iron return condition.

The invention discloses a steel ladle slag line magnesia carbon brick masonry positioning device, and particularly relates to the technical field of steel ladle slag line masonry, the steel ladle slag line magnesia carbon brick masonry positioning device comprises a supporting ring located above a steel ladle, a positioning masonry assembly is arranged at the bottom of the supporting ring, and the positioning masonry assembly comprises a first gear ring arranged at the bottom of the supporting ring; and the bottom of the first gear ring is fixedly connected with a reinforcing ring. A first motor drives a gear ring to transmit and drives a reinforcing ring to rotate, all hinge blocks drive a masonry pressing plate to deflect synchronously in the same direction by means of sliding fit of an inclined guide groove and a sliding column, the masonry pressing plate forms circumferential synchronous pressurization on a brick ring through an abutting arc plate, it is ensured that the brick ring bears uniform pressure in the whole circumferential direction, and the construction efficiency is improved. The problem that local pressure is not uniform in manual masonry is solved, a core foundation is laid for forming a stable self-locking structure for the brick ring, meanwhile, mechanization of pressurization operation is achieved, manual pressurization is replaced, and the labor intensity of foundation pressurization is greatly reduced.

The utility model relates to a gear and rack meshing type steel ladle plug rod driving device. The device comprises a rack which is arranged on a plug rod sliding rod in the axial direction, and the rack can float in the radial direction of the plug rod sliding rod and / or swing along the axis of the plug rod sliding rod; the driving mechanism comprises a displacement driving mechanism and a gear transmission mechanism, and the gear transmission mechanism is arranged on the radial side of the plug rod sliding rod; the gear transmission mechanism can be driven by the displacement driving mechanism to move in the direction close to the rack, so that a gear in the gear transmission mechanism is meshed with the rack, and the piston rod sliding rod is driven by the gear transmission mechanism to ascend and descend. Through the gear and rack meshing mode, vertical movement of the plug rod sliding rod can be accurately controlled in combination with the displacement driving mechanism, so that opening and closing of the molten steel outlet are accurately controlled, and stability and accuracy of the molten steel pouring amount are guaranteed.

The utility model discloses a full-automatic molten metal transferring and pouring system which comprises a track arranged between an electric furnace and a pouring chamber, the track comprises a first track arranged in front of the electric furnace, a second track arranged in front of the pouring chamber and a third track communicated with the first track and the second track, a transferring dumping car is arranged on the first track, and a transferring dumping car is arranged on the second track. A pouring truck is arranged on the second track, a transfer truck is arranged on the third track, molten metal in the electric furnace is transferred into a steel ladle of the transfer dumping truck, and the steel ladle is transferred between the transfer dumping truck and the pouring truck through the transfer truck. According to the system, full-automatic industrial processes such as molten metal receiving, transferring, pouring and liquid returning are achieved, personnel participation is reduced, and the safety of the whole technological process is improved.

A flow field control device and method for a slab continuous casting crystallizer includes: a traveling wave magnetic field generator arranged on the upper part of both sides of the wide face of the slab continuous casting crystallizer, near the lower part of the molten steel meniscus to the upper edge of the submerged entry nozzle outlet, wherein the electromagnetic force generated by the traveling wave magnetic field generator is parallel to the wide face of the slab; DC static magnetic field generators are respectively arranged on the lower part of both sides of the wide face of the slab continuous casting crystallizer and on the molten steel streams on both sides of the submerged entry nozzle, wherein the two static magnetic field generators are perpendicular to the wide face of the slab and the magnetic field directions are opposite; several temperature measuring points and corresponding temperature measuring elements are arranged at intervals along the height direction on the two narrow face crystallizer copper plates of the slab continuous casting crystallizer, wherein at least one temperature measuring point on each of the two narrow face crystallizer copper plates is less than 100 mm away from the upper edge of the narrow face crystallizer copper plate; the distance from each temperature measuring point to the surface of the crystallizer copper plate is the same; and a controller, wherein the traveling wave magnetic field generator, the static magnetic field generator, and the temperature measuring elements are electrically connected to the controller.

The invention discloses a continuous casting submersed nozzle for improving castability of rare earth steel, the continuous casting submersed nozzle comprises a nozzle body, a slag line and an inner hole body, the inner hole body is a ZrO2-CaO-C material, the raw material of the inner hole body is calcium zirconate and graphite, and the inner hole body material comprises the following components in percentage by weight: 45-59% of ZrO2, 18-22% of CaO, 20-32% of C and the balance of inevitable impurities. According to the method, the problems of nodulation and blockage of the submersed nozzle in the continuous casting production process of the rare earth steel and reaming caused by poor corrosion resistance in use can be effectively relieved, the castability of the rare earth steel under multi-furnace continuous casting can be ensured, and the method is beneficial to improving the quality of a casting blank and realizing efficient and stable production of continuous casting.

The utility model relates to an electromagnetic suction type steel ladle plug rod driving device. The device comprises an armature component which is arranged on the plug rod sliding rod, and the armature component can float in the radial direction of the plug rod sliding rod and / or swing along the axis of the plug rod sliding rod; the driving mechanism comprises a displacement driving mechanism and an electromagnetic chuck, and the electromagnetic chuck is arranged on the radial side of the plug rod sliding rod; the electromagnetic chuck can be driven by the displacement driving mechanism to move in the direction close to the armature component, so that the electromagnetic chuck and the armature component are attracted, and the plug rod sliding rod is driven to ascend and descend. Through the attraction design of the electromagnetic chuck and the armature component, the electromagnetic chuck is combined with the displacement driving mechanism to accurately control the vertical movement of the plug rod sliding rod, so that the opening and closing of the molten steel outlet are accurately controlled, and the stability and accuracy of the molten steel pouring amount are ensured.

The invention discloses a modified phenolic resin combined steel ladle brick and a preparation method thereof, and relates to the technical field of tundish refractory materials, the steel ladle brick comprises the following raw materials: 90-93 wt% of main aggregate, the main aggregate comprises fused magnesite, tabular corundum and recycled corundum, and the main aggregate comprises magnesium oxide, magnesium oxide and aluminum oxide; wherein the content of the fused magnesite is 75-85%, the content of the tabular corundum is 1-6%, the content of the recycled corundum is 5-9%, the content of the crystalline flake graphite is 8-10%, the content of the composite binding agent is 3-5%, the composite binding agent is composed of 80% of modified phenolic resin liquid and 20% of common phenolic resin, the antioxidant is 1-2%, the auxiliary binding agent is 1%, and the auxiliary binding agent is calcium lignosulphonate. By adopting the modified phenolic resin, adding the crystalline flake graphite, introducing the recycled corundum and mixing step by step, the oxidation resistance, the thermal shock stability, the erosion resistance and the high-temperature stability of the ladle brick are improved, the cost is reduced, and the service life is prolonged.

The invention discloses a ladle nozzle plug cock and a using method thereof. The ladle nozzle plug cock is composed of a solid counterweight material and a corundum spinel layer wrapping the solid counterweight material. Four symmetrically-distributed arc-shaped grooves are formed in the side surface of the steel ladle plug stopper, the depth of the grooves is larger than or equal to 80 mm, and the four grooves penetrate through the upper surface and the lower surface of the steel ladle plug stopper; the diameter of the upper surface of the steel ladle plug cock is 350 + / -2mm, the diameter of the lower surface of the steel ladle plug cock is 170 + / -2mm, and the vertical height of the upper surface and the lower surface is 230 + / -2mm; the average density of the material formed by combining the solid counterweight material and the outer wrapping material wrapping the solid counterweight material is 3.6-4.0 g / cm < 3 >. Under the condition that molten steel circulation is not blocked, single vortexes are divided through the grooves in the four sides, meanwhile, the molten steel vortex speed is reduced, finally, the through height of the vortexes is reduced, the steel ladle slag entrapment time is delayed, and the metal yield is increased.

The utility model relates to a steel ladle supporting and grabbing mechanism, and relates to the field of casting. The transverse moving trolley is movably arranged on the lifting mechanism of the molten steel casting machine, and the steel ladle is supported and grabbed through the supporting and grabbing arms, hung on the transverse moving trolley, of the at least one set of weighing sensors; the supporting and grabbing end of the supporting and grabbing arm is in butt joint with a supporting seat of a steel ladle through a positioning assembly. Under the condition, the bag grabbing mechanism which is efficient, safe and capable of improving the product quality can be provided.

The invention relates to the technical field of ferrous metallurgy casting, in particular to a drainage sand removing and recycling method and device. Comprising a mechanical arm, a lifting rotation controller, a controller arm, a sand suction cylinder, a sand conveying pipeline, a sand collecting tank and an injection pump. The lifting and rotating controller is fixedly mounted on the mechanical arm; the controller arm is connected with the lifting and rotating controller, and the lifting and rotating of the controller arm are controlled by the lifting and rotating controller; the sand suction cylinder is connected with the controller arm, the sand suction cylinder is of a U-shaped structure, and one end of the sand suction cylinder is a horn mouth used for sucking drainage sand; one end of the sand conveying pipeline is positioned above the tundish cover sprue gate, and the end part of the sand conveying pipeline is bent downwards to be connected with the other end of the sand suction cylinder; the other end of the sand conveying pipeline is connected with the sand collecting tank; the sand collecting tank is connected with an injection pump pipeline, and the injection pump provides suction power. The ladle filler sand, harmful gas in gaps of the ladle filler sand and a long nozzle and a small part of molten steel in contact with the ladle filler sand in a steel ladle can be discharged out of tundish molten steel and recycled.

The invention belongs to the technical field of metallurgy, and discloses a long nozzle fiber gasket and a continuous casting protective pouring method applying the same. The long nozzle fiber gasket comprises a gasket body and a protruding part integrally formed on the upper edge of the gasket body, and the protruding part is of a long-strip-shaped arc-shaped structure. The arc-shaped face of the protruding part is constructed to be attached to the outer contour of the lower edge of the steel ladle collector nozzle so that the guiding and supporting effects can be achieved. The color structure of the protruding part is different from the color of the steel ladle collector nozzle, so that visual guidance is formed, the outer contour of the lower edge of the steel ladle collector nozzle is guided to slide in and be centered along the arc-shaped face of the protruding part during installation, and finally the upper edge of the gasket body and the lower edge of the steel ladle collector nozzle are accurately centered and sealed. According to the long nozzle fiber gasket and the continuous casting protective pouring method applying the same, the precise mounting level of the long nozzle can be improved, the problems that a traditional method depends on experience and is low in efficiency are solved, and the protective pouring effect and the production efficiency are remarkably improved.

The invention belongs to the technical field of preparation of low-carbon magnesia carbon bricks, and particularly relates to a low-carbon magnesia carbon brick for a ladle slag line and a preparation method of the low-carbon magnesia carbon brick. According to the low-carbon magnesia carbon brick for the steel ladle slag line, 98 # fused magnesia with the particle size being larger than or equal to 3 mm and smaller than 5 mm, larger than or equal to 2 mm and smaller than 3 mm and larger than or equal to 1 mm and smaller than 2 mm serves as coarse aggregate, 98 # fused magnesia with the particle size being larger than or equal to 0.088 mm and smaller than 1 mm serves as medium aggregate, a mixture of 98 # fused magnesia with the particle size being smaller than 0.088 mm, fused magnesia-calcium sand and zircon sand serves as powder, crystalline flake graphite and a phenolic resin binding agent are added, and the low-carbon magnesia carbon brick for the steel ladle slag line is obtained through sintering. According to the low-carbon magnesia carbon brick for the steel ladle slag line, calcium hexaluminate, magnesium silicide, chromium carbide and a rare earth compound are used as additives, and the raw materials are mutually matched and have a synergistic effect, so that the prepared low-carbon magnesia carbon brick for the steel ladle slag line has excellent mechanical strength, oxidation resistance and slag resistance.

The invention discloses submicron grinding center casting machining equipment and a machining method thereof, and relates to the technical field of casting machining, the submicron grinding center casting machining equipment comprises a base, a casting ladle and a sand box assembly, the casting ladle and the sand box assembly are located above the base, a liquid pouring opening and a liquid adding opening are formed in the casting ladle, and a liquid injection opening is formed in the top of the sand box assembly; according to the device, a liquid injection opening of the sand box and a liquid pouring opening of the casting ladle are always kept in a right lower alignment relation, the problem that molten iron is poured to the outer wall of the sand box is completely eradicated, and compared with traditional sand box fixing equipment, the device has the advantages that the sand box fixing efficiency is improved, and the production cost is reduced. The position of the casting ladle does not need to be manually adjusted, the positions of a sand box liquid injection opening and a casting ladle liquid pouring opening are calibrated, and the working difficulty is lowered.

The utility model discloses a fork type steel pouring vehicle capable of adapting to different specifications, which is characterized in that a track arranged along the axial direction of a bridge frame is arranged on the bridge frame, a translation trolley which travels along the track and is of a rectangular frame structure is arranged on a running cart, and a sunken movable frame which can be adjusted in a lifting manner and is of a hollow box body structure is arranged in the translation trolley; steel ladle seats which correspond to each other and are used for loading and fixing a steel ladle are arranged on the two sides of the lower portion of an inner cavity of the sinking type movable frame, and a ladle cover which can be adjusted in a lifting mode and is used for conducting sealing and heat preservation on the steel ladle is arranged in the inner cavity of the sinking type movable frame. According to the utility model, the steel ladles with different specifications can be loaded and transported conveniently and efficiently in a heat preservation manner, and the subsequent bottom pouring operation of the steel ladles by workers is greatly facilitated.

The utility model discloses a submersed nozzle preheating device which comprises air draft branch pipes, an air collecting pipeline and an exhaust fan, a plurality of air draft branch pipes are connected in parallel, one ends of the air draft branch pipes are connected to one end of the air collecting pipeline at intervals, and the other end of the air collecting pipeline is connected to an air suction opening of the exhaust fan. A preheating device is arranged at the end of the air draft branch pipe, and after the middle tank body is driven into the baking position, the submersed nozzle in the middle tank body sinks into the preheating device; each path of air draft branch pipe is provided with one filtering device; each air draft branch pipe is divided into a front section and a rear section, one end of the front section is connected with the preheating device, one end of the rear section is connected with the air collecting pipeline, and the filtering device is connected between the front section and the rear section of the air draft branch pipe. High-temperature heat generated during preheating of the intermediate tank can be used for preheating the water gap, the interior of the air draft and drainage system can be kept clean, and it is guaranteed that the air draft and drainage efficiency is stable.

The application discloses a stopper rod for inhibiting confluence vortex and a method thereof, and belongs to the technical field of water gap flow control of continuous casting tundish in metallurgy technology. The stopper rod comprises a stopper rod shell, a stopper rod core is embedded in the stopper rod shell, a magnetic field generating device is arranged on the outer circumferential wall of the stopper rod core, and the magnetic field generating device is used for exciting a magnetic field directly above the water gap. The magnetic field generating device is an electromagnetic coil or a rotating magnetic field stirrer. The application can effectively inhibit the generation of confluence vortex at the end of pouring by adding an electromagnetic field to make the molten steel generate induced current. Meanwhile, the magnetic field excited by the application is formed directly above the water gap and has the maximum strength at the vortex forming position, so that the inhibition effect of the magnetic field on the confluence vortex is more direct, the inhibition effect is obvious, and energy waste is avoided.

The utility model discloses a melt steel ladle transport vehicle positioning device which comprises a device base, a driving wheel is arranged on the outer side of the bottom end of the device base, a placing table is fixedly arranged on the top of the device base, a positioning table is arranged at the top end of the placing table, and a positioning block is arranged on the outer side of the positioning table. An auxiliary supporting plate is fixedly connected to the top end of the positioning block, a steel ladle is arranged at the top end of the positioning table, a driving assembly is arranged at the bottom of the positioning table, and a driving motor is arranged at the bottom of the driving assembly. The synchronous plate drives the movable blocks to move through the connecting rods and the rotating shafts, so that the movable blocks move in the sliding grooves, when the synchronous plate drives the multiple sets of connecting rods, the positioning blocks corresponding to the tops of the movable blocks are synchronously driven to move, the distance between the positioning blocks is changed through synchronous movement of the positioning blocks, and steel ladles of different sizes are clamped, fixed or loosened.

To provide a method for continuously casting a steel with which the natural opening ratio of a long nozzle can be improved by restraining the pressure rise in the long nozzle at the time of changing a ladle.SOLUTION: A molten steel flow rate control device (5) for controlling a flow rate of molten steel poured from a ladle (1) into a tundish (2) is closed, and a tip portion of a long nozzle (9) for pouring the molten steel from the ladle (1) into the tundish (2) is immersed in the molten steel in the tundish (2) with a filler (4) filled in a molten steel outflow hole (3) of the ladle (1).SELECTED DRAWING: Figure 4