3128results about "Melt-holding vessels" patented technology

The invention discloses a continuous casting method for improving the liquid level fluctuation of an ultra-low carbon IF steel crystallizer, which comprises the following control processes: confirming continuous casting machine equipment before production: confirming the state of the continuous casting machine equipment before continuous casting, if the time interval between casting times is not less than 2.5 hours, performing roll gap penetration on a fan-shaped section and recalibrating the abnormal fan-shaped section, and if the time interval is not less than 2.5 hours, performing roll gap penetration on the fan-shaped section; the pressing deviation of the fan-shaped section is less than or equal to 0.5 mm; if the casting time interval is less than 2.5 hours, the following control is carried out: when the precision control of the continuous casting machine equipment is normal, the casting pulling speed and the secondary cooling water quantity are normally controlled according to requirements; when 1-3 fan-shaped sections of a continuous casting machine have the pressing deviation larger than or equal to 0.5 mm and smaller than 1 mm, the pulling speed is reduced by 0.05 m / min under the requirement of the normal casting machine state; and the secondary cooling water amounts of the casting machine loops corresponding to the 1-3 sections are respectively increased by 15-25%. According to the method, the crystallizer liquid level fluctuation is effectively prevented, and the crystallizer liquid level fluctuation is obviously improved.

The invention relates to the technical field of thin-strip cast rolling, and provides a thin-strip cast rolling tundish continuous casting device and method.The thin-strip cast rolling tundish continuous casting device comprises a base frame horizontally installed on the surface of a foundation, and the base frame is provided with a flow distribution ladle, a tundish and a large ladle from bottom to top; an adjusting mechanism is arranged below the position, where the casting position is arranged, of the base frame, the adjusting mechanism comprises two limiting plates which are symmetrically arranged, and one side of the middle of each limiting plate is fixedly connected with a second motor for driving a crystallizer roller; and a baking oven fixed on the placing rack is arranged above the middle parts of the two motors II. According to the method, molten steel qualified in smelting is directly poured into the molten pool defined by the two crystallization rollers rotating oppositely and the side sealing plates through the large ladle, the tundish and the flow distribution system, the molten steel is cooled through the two crystallization rollers rotating oppositely to form the steel belt with the thickness of 1-5 mm, the production cost can be saved, the casting continuity is improved, the production efficiency is improved, and the yield is increased.

The invention relates to the technical field of continuous casting tundish metallurgy, in particular to a high-performance continuous casting tundish dry material forming method which comprises the following steps: crushing and grinding raw materials, and stirring and mixing according to a formula proportion to obtain candidate raw materials; the candidate raw materials are dried, and particle size distribution of the dried candidate raw materials is obtained; determining vibration parameters in the vibration process according to the particle size distribution, and performing vibration treatment; obtaining the volume density and apparent porosity of the vibrated candidate raw materials, and determining whether the compactness degree of the vibrated candidate raw materials meets a preset standard or not; if the compactness of the vibrated candidate raw materials meets the preset standard, baking control parameters in the baking process are determined based on the volume density and the apparent porosity; and baking treatment is carried out based on the determined baking control parameters, and cooling treatment is carried out after baking is completed, so that the formed tundish dry material is obtained. The strength of the tundish dry material can be guaranteed, and the forming efficiency is improved.

The utility model relates to an automatic slag ladle tipping system, which comprises a foundation, a slag transporting vehicle, a trolley, a tipping device and a control mechanism, the slag transporting vehicle can transport a slag ladle to walk on the foundation, the trolley can move to a ladle placing position and a tipping racking position on the foundation, the trolley can bear the slag ladle, and the tipping device is arranged on the control mechanism. The tipping device comprises a fixing base, a tipping supporting frame, a shaft supporting base, a locking mechanism and a tipping driving mechanism, the tipping supporting frame is installed on the fixing base in a turnover mode, the shaft supporting base is fixed to the tipping supporting frame, the locking mechanism can lock a trunnion located on the shaft supporting base, and the tipping driving mechanism drives the trunnion to rotate. The tipping driving mechanism can drive the tipping support frame to forwards overturn to a dumping position or backwards overturn to an upper tank position, and when the tipping support frame is located at the upper tank position, a slag tank frame on the trolley located at the tipping upper frame position is placed on the tipping support frame; and the control mechanism is in control connection with the trolley, the locking mechanism and the tipping driving mechanism respectively.

The invention discloses a steel ladle tipping transport vehicle and a hot repair method, and belongs to the technical field of continuous casting of ferrous metallurgy. The steel ladle tipping transport vehicle comprises a vehicle body, a tipping saddle and a rotating arm oil cylinder, the front part of the tipping saddle is hinged to the vehicle body, so that the tipping saddle is convenient to overturn; the output end of the rotating arm oil cylinder is hinged to the middle of the tipping saddle to provide tipping force. The tipping saddle is provided with a clamping groove with an upward notch, and the notch is matched with steel ladle seats on the two sides of the steel ladle in shape, so that the tipping saddle and the steel ladle seats are clamped conveniently. In the specific use process, the clamping groove is connected with the steel ladle base in a clamped mode, the tipping saddle stably bears the steel ladle and drives the steel ladle to synchronously transport and roll over, the tumbler oil cylinder enables the steel ladle to roll over, the vehicle body bears the steel ladle to move between the hot repair station and the molten steel receiving span, transportation and hot repair operation of the steel ladle on the vehicle body are achieved, safety and reliability are achieved, use of a crown block is reduced, and working efficiency is improved. The technical problems that the molten steel receiving span temperature is high, the working environment is poor, the hoisting travel is long and the safety is low during hot repair of an existing steel ladle are solved.

The utility model discloses a tundish dry material automatic feeding device which comprises a stock bin, a discharging channel is arranged at the bottom of one side of the stock bin, a partition plate, a screening funnel and a feeding hopper are sequentially arranged in the stock bin from top to bottom, the partition plate is fixedly connected with the inner wall of the stock bin, and the screening funnel and the feeding hopper are both movably connected with the inner wall of the stock bin. Bagged dry materials are placed in the stock bin, wall breaking treatment is conducted on the bagged dry materials through the material supplementing mechanism, the dry materials fall down from the strip-shaped holes after packaging bags are scratched, the materials are screened after being filtered through the screening funnel, residual impurities can be discharged from the cleaning opening, and the screened materials are conveyed into the discharging channel through the feeding hopper. The material guiding thin pipe and the spiral auger are used for controlling the downward sliding speed and flow of powder, the protective cover communicated with the output end of the conveying hose is matched to convey the material to the tundish, raised dust can be covered, flying dust is reduced, the material supplementing process is efficient, time and labor are saved, and safety is improved.

The invention belongs to the field of induction heating tundishes, and particularly provides a dual-purpose multi-strand continuous casting induction heating tundish device which comprises a heat-resisting inner cladding layer, an outer protection layer is arranged on the outer side of the heat-resisting inner cladding layer, and the heat-resisting inner cladding layer is connected to the inner side of the outer protection layer in a combined mode. A middle heating layer is formed between the outer protection layer and the heat-resistant inner cladding, casting ladle pipes which are connected in a sealed mode are arranged on the two sides of the middle of the inner bottom face of the heat-resistant inner cladding in a penetrating mode, and the bottoms of the casting ladle pipes extend to the position below the bottom face of the outer protection layer in a penetrating mode; according to the method, the air bricks on the inner bottom face of the tundish are comprehensively laid, a heat-resisting inner cladding layer in the tundish can be protected, the tundish is completely prevented from being eroded and damaged by molten metal, the service life of the tundish is prolonged, argon can be injected into all positions in the tundish through laying of the air bricks, and the service life of the tundish is prolonged. And the impurity removal efficiency and quality of the tundish on the internal molten metal are improved.

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 utility model discloses an argon bottom blowing device for improving the purity of molten steel. The argon bottom blowing device comprises a tundish, a water gap is formed in one side of the bottom face of the tundish, an electromagnetic stirrer is arranged on the outer side of the water gap, an air brick is arranged above the water gap in the tundish, and an argon conveying pipe is arranged at the bottom of the air brick. The gas permeable brick is arranged above the water gap, argon is blown into molten steel, the argon directly acts on molten steel flow, a gas curtain wall is formed around the water gap, floating and removal of inclusions are promoted, the purity of the molten steel is improved, the gas permeable brick is used in cooperation with the electromagnetic stirrer, the molten steel can be effectively stirred, a stirring blind area is eliminated, and the service life of the molten steel is prolonged. And the heat transmission of the molten steel in the tundish is more uniform. And moreover, the uniform molten steel flowing is beneficial to keeping the water gap unobstructed, and the water gap is prevented from being blocked by inclusions or cold steel in the molten steel.

The invention provides a metal continuous casting device, and relates to the field of metal casting. The metal continuous casting device comprises a hot melting unit, a feeding unit is arranged above the hot melting unit, a heat preservation unit is arranged below the hot melting unit, a vibration crystallizer is arranged below the heat preservation unit, and a dummy ingot sealing unit is arranged at the outlet end of the vibration crystallizer. The vacuum pumping unit is communicated with the hot melting unit, the feeding unit and the heat preservation unit, the hot melting unit comprises a smelting cavity and a smelting crucible fixedly installed in the smelting cavity, the center of the bottom end of the smelting crucible is open and communicated with the heat preservation unit through a long nozzle, and a first stopper mechanism is fixedly installed above the smelting cavity. According to the metal continuous casting device, the smelting crucible is arranged in the smelting cavity, and the flowing of molten copper is controlled through the first stopper rod mechanism, so that a structure for driving the smelting crucible to feed can be reduced, feeding can be controlled more conveniently, and meanwhile, the device can be kept in a vacuum state conveniently.

The utility model belongs to the technical field of metallurgical industry production equipment, and discloses a molten iron car storage battery power supply capping structure which comprises a car frame, a molten iron tank is arranged on the car frame, a capping device is arranged at a tank opening of the molten iron tank, and a hydraulic station is arranged on the car frame and located on one side of the molten iron tank. The hydraulic station is used for supplying energy to the capping device and controlling the capping device to be opened or closed, a containing cabin is arranged on the frame and located in the area below the hydraulic station, a battery pack and a control box are arranged in the containing cabin, the battery pack is used for supplying power to the control box, and the control box is used for sending an action instruction to the hydraulic station. According to the hot metal car storage battery power supply capping structure, the independent power supply and control functions of the capping device of the hot metal car are achieved through the battery pack and the control box, the problems that fixed-point parking power connection and marshalling connection are needed are solved, the field manual operation difficulty is lowered, an electrical control system is simplified, and feasibility is provided for achieving factory unmanned operation.

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 relates to the technical field of metal casting, in particular to a full-automatic pouring method of an anode carbon block, which comprises the steps of molten iron melting treatment, molten iron transfer, molten iron weighing and heat preservation, troubleshooting before pouring and pouring, in the process of molten iron weighing and heat preservation, a weighing system monitors the weight of molten iron in a capacity bin, and in the process of molten iron weighing and heat preservation, the weight of the molten iron in the capacity bin is monitored; the medium-frequency induction coil is used for heating and heat preservation of molten iron in the capacity bin, the heat preservation power is adjusted according to the molten iron temperature fed back by the temperature monitoring system, in the pouring process, the visual system is used for confirming the positions of the chute mechanism and the anode carbon block, and an air pressure sensor and a liquid level position sensor are integrated; according to the full-automatic pouring method for the anode carbon block, the liquid level of molten iron in the liquid outlet groove is kept within the set height range all the time, finally, whether the pouring liquid level reaches the set required value or not is detected through a visual system, and the full-automatic pouring method for the anode carbon block is high in automation degree, good in stability and capable of effectively improving the connection quality of the anode carbon block and the anode claw and the production efficiency.

The utility model belongs to the technical field of steel ladle design and automation, and particularly relates to a mounting assembly for an oil cylinder structure and an automatic steel ladle mechanism assembling system.The mounting assembly comprises a tail end clamp and a mounting base, the tail end clamp comprises a clamping body and a controllable magnetic attraction body, a groove is formed in the clamping body, and the controllable magnetic attraction body is connected to one side of the clamping body; the oil cylinder mounting seat comprises a columnar positioning support body, and the positioning support body comprises a connecting section matched with the groove; and the connecting section can be adsorbed in the groove under the magnetic force generated by the controllable magnetic attraction body. According to the installation assembly, connection is achieved in a magnetic attraction mode, complex processes such as bolts and welding which are possibly needed in a traditional installation method are omitted, and therefore the installation process and the structural complexity are simplified, and the operation difficulty is further reduced. And the clamping and releasing processes become simple and rapid through the magnetic adsorption connection mode. When the oil cylinder needs to be clamped or released, the oil cylinder can be rapidly installed only by adjusting magnetic force or simply disassembling the connecting section.

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 invention relates to a method for continuous casting of metal, in particular steel, wherein liquid metal is conducted from a movably mounted ladle (2) into a continuous casting tundish (3) by means of a shroud (4) and is conducted from the continuous casting tundish (3) into a casting mould (16) via an outlet (14), the continuous casting tundish (3) compensating for the interruptions when the ladles (2) are exchanged, and the ladles (2) being mounted in a movement device, wherein, to ensure a high separation efficiency for cast metal charges that follow one another, a singular rolling kind of flow is created in the continuous casting tundish (3), and the invention also relates to a fitting (22, 30) for the continuous casting tundish (3) and to a continuous casting plant (1) comprising the continuous casting tundish (3).

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 steelmaking, in particular to a treatment method for a frozen hot-metal bottle. The method comprises the following steps: firstly, treating the frozen tank surface of the hot-metal tank, melting the frozen tank surface in a small area by using high-temperature heat generated by iron oxidation, burning a plurality of small deep pits, increasing the contact area of hot-melt molten steel and the frozen tank surface, avoiding layering, and quickly melting the frozen tank surface; secondly, hot melting treatment is carried out on molten steel of a freezing tank of the hot metal tank, and the freezing tank meets the iron folding requirement by tapping steel into the freezing tank. Thirdly, carrying out thermal cycle treatment on the frozen molten iron of the molten iron tank, carrying out hot melting on the molten iron, carrying out frozen tank iron folding, immediately adding the molten iron into the converter after iron folding, continuously carrying out iron folding after iron adding, repeating for several times until the turnover requirement is met, finishing the frozen molten iron tank treatment, and carrying out normal turnover of the molten iron tank. The treatment period is 12 hours or below, no unconventional operation exists, the potential safety hazard is low, normal turnover of the hot-metal ladle and the turnover rate of the hot-metal ladle can be achieved, the production operation rate is increased, and smooth production is guaranteed.

The secondary combustion type burner for the baking ladle comprises a smoke column, a baffle, a burner nozzle and the baking ladle, the baffle is in separable airtight connection with the opening side of the baking ladle, and the smoke column and the burner nozzle are arranged on the baffle; the flue gas column comprises a flue gas column main body which is inserted into the baking ladle inner cavity and is coaxial with the baking ladle inner cavity, a flue is arranged in the center of the flue gas column main body, and the flue penetrates through the baffle to enable the baking ladle inner cavity to be communicated with the outside; a preheating gas channel is arranged in the side wall of the flue gas column; the burner comprises a burner body connected with the baffle, and the burner body comprises a combustion chamber and an air channel. One end, far away from the baking ladle, of the combustion chamber is provided with an oxyhydrogen channel and a gas channel, and the other end is a flue gas port inserted into an inner cavity of the baking ladle; the air channel is arranged outside the combustion chamber, and one end of the air channel communicates with the hot air pipe. According to the combustor, a secondary combustion mode is adopted, good temperature uniformity is kept while the combustion temperature is increased, smoke is fully utilized for preheating, the temperature rising speed is increased, and energy consumption is reduced.

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 anti-oxidation and anti-erosion aluminum-zirconium-carbon sliding plate for metallurgical flow control and a preparation method thereof, and belongs to the technical field of refractory materials. The aluminum-zirconium-carbon sliding plate is prepared from the following raw materials: graded dense fused corundum particles, graded fused zirconium mullite particles, alumina powder, zirconium oxide powder, carbon black, metal silicon micro powder, zirconium oxide coated nano alumina fibers, polycarbosilane powder, a composite bonding curing agent and a composite antioxidant. According to the oxidation-resistant and erosion-resistant aluminum-zirconium-carbon sliding plate for metallurgical flow control, the volume density is 3.22 g.cm <-3 > to 3.30 g.cm <-3 >, the apparent porosity is 2.97% to 3.05%, the compression strength is 246 MPa to 255 MPa, the breaking strength is 19.7 MPa to 20.9 MPa, the thermal expansion rate is 0.8% to 0.9%, and the continuous sliding frequency is 5 times to 6 times.