235 results about "Continuous casting mold" patented technology

The invention relates to a method for calculating the slag entrapment amount of continuous casting covering slag based on computational fluid mechanics, which adopts a large eddy simulation (LES) turbulence model, a multiphase flow model (VOF) and a discrete phase model (DPM) in CFD calculation, and combines a grid self-adaptive coarsening and refining mechanism and a VOF-to-DPM conversion mechanism. The method is used for numerical simulation and control of the slag entrapment amount of the continuous casting covering slag under the argon blowing condition, a slag entrapment mode calculation result is verified through a water model experiment, and a numerical simulation calculation result obtained through the method is well matched with a water model experiment result. Compared with the prior art, the method has the advantages that the slag entrapment amount of the continuous casting covering slag can be effectively calculated, and a basis is provided for controlling the slag entrapment amount of the covering slag.

The invention relates to the technical field of flux-cored wires. The preparation method comprises the following steps: weighing the following raw materials in parts by weight: 4-6 parts of chromium carbide powder, 7-9 parts of molybdenum powder, 6-8 parts of nickel powder, 10-15 parts of niobium powder, 15-18 parts of tungsten carbide powder, 7-11 parts of a modified titanium carbide agent, 5-8 parts of a blending agent added based on boron and 2-4 parts of 30-mesh natural graphite; 1-2 parts of sodium fluosilicate; 1-2 parts of aluminum powder; and 70-75 parts of iron powder. The flux-cored wire can adapt to complex service environments of parts such as rollers and continuous casting crystallizers in the metallurgical industry, the service life of the parts subjected to surfacing repair is prolonged, the production efficiency of the parts subjected to surfacing repair is improved, the obtained flux-cored wire achieves balance of high-temperature performance, mechanical performance and low-temperature stability, and the comprehensive applicability of products is improved.

The present invention relates to the technical field of steel metallurgy process simulation, and specifically relates to a simulation method for particle motion and interaction behavior within a continuous casting mold. The simulation method comprises the following steps: acquiring mold parameters and establishing a model; performing fluid domain volume extraction and structured mesh division on the model; importing the mesh model into simulation software and performing iterative solution; establishing injection points for argon bubbles and inclusions within the mold, compiling and calculating the flotation removal of argon bubbles and inclusions at a steel-slag interface, the capture thereof at a solidification front, and collision-aggregation, and performing coupled computation; and post-processing the simulation results to obtain the flow field, temperature field, solidified-shell distribution, and discrete-phase motion behavior within the mold at different time points. The method of the present invention enables analysis of the motion and interactions of discrete-phase particles such as argon bubbles and inclusions within the mold, thereby accurately predicting the distribution of the particles in the molten steel and the solidified shell.

According to the slab continuous casting crystallizer flow field detection device and method, a mounting hole is formed in the end face of a crystallizer copper plate in the continuous casting throwing direction, the axis of the mounting hole is parallel to the working face of the crystallizer copper plate, and the distance between the axis of the mounting hole and the working face of the crystallizer copper plate is larger than or equal to 10 mm; a kerf is arranged on the working surface of the crystallizer copper plate along the thickness direction of the crystallizer copper plate, the center line of the kerf and the axis of the mounting hole are positioned on the same vertical plane, and the end of the kerf is communicated with the mounting hole; the optical fiber temperature measurement sensor is laid at the bottom of the kerf and in the mounting hole, the optical fiber temperature measurement sensor in the mounting hole is sleeved with a sealing ring, and the outer side end of the optical fiber temperature measurement sensor is locked in the mounting hole through a fastening nut; and a sealing material is filled in the kerf after the optical fiber temperature measurement sensor is laid. According to the invention, the temperature of the crystallizer copper plate can be dynamically detected in real time with high precision and high density, so that the initial solidification process of molten steel in the crystallizer and the flowing state of the molten steel are indirectly reflected, and conditions are created for optimizing the flow field of the slab continuous casting crystallizer and improving the quality of continuous casting products in combination with an electromagnetic flow control technology.

The invention relates to a continuous casting process optimization method for inhibiting slag entrapment of casting powder, which adopts a CFD (computational fluid dynamics) calculation mode to obtain the slag entrapment rate of the casting powder in a crystallizer and the rate of capturing slag drops by a wall surface, can intuitively reflect the slag entrapment condition in the crystallizer, and realizes accurate control of the slag entrapment rate and the slag drop capturing rate. Furthermore, numerical simulation of continuous casting crystallizer slag entrapment is carried out on the basis of computational fluid mechanics (hereinafter referred to as CFD) under the conditions of certain section width and thickness of the crystallizer, certain inner diameter and insertion depth of the submersed nozzle and certain argon flow, and different dip angles of the submersed nozzle are adopted under the conditions of different pulling speeds; therefore, slag entrapment of the crystallizer casting powder is inhibited, and the occurrence rate of the slag entrapment defect of the automobile outer plate casting powder is reduced. Compared with the prior art, the method has the advantages that the slag entrapment rate and the slag drop capturing rate can be accurately controlled, and the steel-making defect occurrence rate of the surface of the automobile outer plate can be greatly reduced.

The invention relates to the technical field of continuous casting crystallizers, and discloses a detachable multi-stage water-cooling crystallizer structure and application thereof in copper column continuous casting, the detachable multi-stage water-cooling crystallizer structure comprises a cooling system and a crystallization pipe, the cooling system is used for cooling the crystallization pipe, the crystallization pipe comprises a plurality of crystallization plates, and the crystallization plates are arranged in the crystallization pipe. The crystallization pipe is formed by mutually splicing a plurality of crystallization plates in the direction around the axis of the crystallizer and the axial direction of the crystallizer, and the crystallization plates can move in the axial direction, so that replacement of the crystallization plates is realized; the cooling system comprises cooling pipes, the pipe walls of the cooling pipes are tightly attached to the outer pipe walls of the crystallization pipes, the crystallization plates correspond to one or more sets of cooling pipes, and the cooling system has the advantages that in the continuous casting production process, partition replacement of crystallizer copper plates can be achieved, the production cost of copper column continuous casting is reduced, and the production efficiency is improved.

The invention discloses a method for repairing a continuous casting crystallizer based on supersonic laser deposition additive, which comprises the following steps: removing dirt and scars on the surface of a crystallizer substrate by using a laser texturing technology, increasing the specific surface area of the crystallizer substrate, and then carrying out supersonic laser deposition additive repair on the treated substrate. An additive repairing layer and a high-temperature alloy strengthening layer with certain thicknesses are prepared by adjusting technological parameters; the substrate is strengthened through a heat treatment process, element diffusion is accelerated, and interlayer internal combination is enhanced; and finally, the crystallizer base plate is corrected and then machined into a finished product. According to the method, through the supersonic laser deposition additive process, the bonding capacity of the repairing layer and the base plate is enhanced, the deposition efficiency and the deposition speed are improved, the internal organization structure of the repairing layer is improved, and the comprehensive performance of service of the continuous casting crystallizer is enhanced.

The invention relates to an automatic control method for electromagnetic stirring parameters of a slab continuous casting crystallizer, which comprises the following steps of: 1, selecting a proper water gap immersion depth according to the condition of a continuous casting production field, 2, networking to obtain technological parameters such as a casting blank section, a casting speed, the water gap immersion depth and an argon blowing flow, and 3, automatically controlling and calculating the electromagnetic stirring parameters. The method comprises the following steps: step 1, calculating the most preferential stirring parameter under the current working condition through table look-up and interpolation calculation, step 4, outputting an electromagnetic stirring current parameter, step 5, executing the output electromagnetic stirring parameter, step 6, tracking the quality of a continuous casting slab product, repeating the steps 1-6 at regular time, and repeating the steps 2-6 under the condition that the step 1 is not changed. According to the scheme, casting blank surface defects are effectively removed, and the product quality is improved. After the optimized method is adopted, the occurrence rate of longitudinal cracks on the surface of the steel grade is reduced to 1.96% from 4.73%, and the defect rate of the steel grade is reduced to 3.93% from 8.41%.

The invention relates to a production method of a continuous casting billet for seawater corrosion resistant steel, and belongs to the technical field of steel. Continuous casting crystallizer casting powder and casting powder layer thickness control are adopted, and the good lubricating effect of the casting powder is guaranteed; according to the section size of a continuous casting machine, surface and internal cracks are prevented from being formed by controlling the continuous casting pulling speed, the superheat degree, the crystallizer water amount, the secondary cooling water amount, the taper, the roll gap shrinkage amount and the like; the center density of the continuous casting billet is improved by controlling the fan-shaped section roll gap shrinkage amount and the soft reduction, the effects of eliminating center shrinkage cavities and looseness and relieving center segregation are achieved, the surface crack occurrence rate of the continuous casting billet for the seawater corrosion resistant steel is smaller than or equal to 0.1%, triangular area cracks are smaller than or equal to 0.5 level, middle cracks are smaller than or equal to 0.5 level, and the center segregation rating is superior to C 1.5 level.

The invention discloses a cooling device for a continuous casting mold, which relates to the technical field of nonferrous metal processing, and comprises: a graphite mold, a connecting ring is fixedly installed on the surface of the graphite mold, and a water inlet is fixedly installed on the bottom of the connecting ring; a cooling device, the cooling device comprises a connecting pipe, a circular pipe, a nozzle, a sealing block, a driving device, a hollow ring, a sealing slide plate, a connecting rod and an arc plate, cooling water enters the connecting pipe through the water inlet, and then enters the circular pipe from the connecting pipe, and the cooling water is then sprayed out through the nozzle to uniformly cool the forgings in the graphite mold, the connecting pipe is fixedly installed on the surface of the water inlet, the circular pipe is fixedly installed on the circumferential surface of the connecting pipe, and the nozzle is fixedly installed on the circumferential surface of the circular pipe, so as to prevent excessive cooling water from being sprayed out to cause rapid cooling and thermal stress on the surface of the casting, thereby increasing the risk of wear and damage to the casting.

The invention belongs to the technical field of metallurgical machinery, and particularly relates to a crystallizer vibration control method suitable for high-pulling-speed continuous casting and application. According to the method, a mathematical model is established for the vibration curve of the high-pulling-speed continuous casting crystallizer, through theoretical formula derivation and numerical calculation, the vibration curve is composed of seven lines including a straight line segment AB, a cosine line BC, a straight line CD, a cosine line DEF, a straight line FG, a cosine line GH and a straight line HI, and a speed expression, a displacement expression and an acceleration expression are given in sequence. And finally simulating, calculating and drawing a displacement curve, a speed curve and an acceleration curve. The vibration curve has the advantages that under the same pulling speed, the vibration acceleration is small, the vibration is stable, and the system load is small; the acceleration curve is continuous and guidable, vibration is stable, and basic guarantee is provided for good casting blank surface quality. And finally, the method is used for design guidance of the vibration mode of the high-pulling-speed continuous casting crystallizer.

The invention belongs to the technical field of laser cladding and metal surface repair, and relates to a preparation method of a laser cladding reinforced wear-resistant coating for a continuous casting crystallizer copper plate, firstly, an intermediate coating for laser cladding of the surface of the copper plate is prepared by using a binder and metal powder, and the laser reflectivity of the prepared intermediate coating is greatly reduced compared with that of the copper plate; then, a laser pre-cladding process is carried out on the surface of the copper plate, so that firm metallurgical bonding is generated between the intermediate coating and the copper plate, and conditions are created for the laser cladding process for strengthening the wear-resistant layer; and finally, the continuous casting crystallizer copper plate coating of which the wear-resisting property at the high temperature of 300 DEG C is obviously superior to that of a traditional electroplating coating is obtained by designing material components of a strengthened wear-resisting layer and a laser cladding process, and the industrial problem that laser cladding is difficult to directly carry out on the surface of a traditional copper plate is solved.

According to the slab continuous casting water gap electromagnetic flow control device and method, static magnetic fields are arranged on the outer side of a slab continuous casting submersed water gap above a molten steel meniscus in a slab continuous casting crystallizer, and the arrangement modes of the static magnetic fields include the single magnetic field mode and the double magnetic field mode; in the single magnetic field form, a static magnetic field is perpendicular to the center line of the submersed nozzle, namely the static magnetic field is perpendicular to the gravity action direction; the static magnetic field is generated by at least two magnetic field generators which are arranged on the two sides of the submersed nozzle and distributed in an axial symmetry mode. The magnetic field generator is of an annular structure and surrounds the submersed nozzle and the magnetic field generator by a circle; the static magnetic field is perpendicular to the center line of the submersed nozzle, namely the static magnetic field is perpendicular to the gravity action direction; the static magnetic field is generated by at least two magnetic field generators which are arranged on the two sides of the submersed nozzle and distributed in an axial symmetry mode. The static magnetic field forms a closed loop after passing through the two C-shaped magnet yokes, and the C-shaped magnet yokes are symmetrically arranged along the submersed nozzle axis. And the C-shaped magnet yoke is made of a magnetic conductive material.

To provide a Ni-based alloy with a linear expansion coefficient comparable to that of copper or copper alloy, a continuous casting mold with its inner surface coated with the Ni-based alloy, and a method for producing the same.SOLUTION: A Ni-based alloy comprises Mn of 15.0-35.0 mass%, B of 0.2-3.5 mass%, and Si of 0-4.5 mass%; optionally, at least one selected from the group consisting of Mo, Cu, and Cr, with the total amount of Mo, Cu, and Cr being 0-20.0 mass%; optionally, at least one selected from the group consisting of Fe and Co, with the total amount of Fe and Co being 0-10.0 mass%; and the balance being Ni and unavoidable impurities.SELECTED DRAWING: None

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 relates to a method for preparing rare earth steel by refining prefabricated slag of a CaO-Al2O3-REO-MgO slag system, belongs to the technical field of ferrous metallurgy, and solves the technical problem of how to prepare the rare earth steel by refining the prefabricated slag of the CaO-Al2O3-REO-MgO slag system so as to improve the rare earth yield. The invention discloses a method for refining and preparing rare earth steel by using prefabricated slag of a CaO-Al2O3-REO-MgO slag system. The method comprises the following steps: S1, paving a deoxidizing agent, the prefabricated slag and lime at the bottom of a steel ladle before tapping, and tapping; s2, slag adjustment operation of the LF furnace; step S3, alloying is carried out; s4, treating white slag for more than or equal to 20 minutes, and performing calcium treatment; s5, argon blowing is carried out, and an LF furnace station is left; s6, RH treatment is carried out; s7, adding a rare earth iron alloy; s8, vacuum breaking is carried out after vacuum circulation, and the robot leaves the RH station; s9, a tundish covering agent is scattered on the surface of the molten steel; and S10, the surface of the molten steel is protected through continuous casting crystallizer casting powder. The yield of the rare earth elements is 40% or above.

The present invention discloses a logical judgment method for longitudinal surface cracks of continuous casting billets based on temperature characteristics, belonging to the field of iron and steel metallurgy. The method is characterized by including: establishing a sample database for longitudinal surface cracks of continuous casting billets; calculating the temperature characteristic values of thermocouples in the continuous casting mold; obtaining the temperature characteristic value range of longitudinal surface cracks of continuous casting billets; and judging the longitudinal surface cracks of continuous casting billets. It can accurately and quickly identify the longitudinal surface cracks of continuous casting billets, providing an effective method for on-line detection of longitudinal surface cracks of continuous casting billets. It is scientific, reasonable, highly applicable and has good effects.

The invention relates to the technical field of continuous casting crystallizer back taper measurement, in particular to a continuous casting crystallizer back taper measuring device and method.The continuous casting crystallizer back taper measuring device comprises a base, a laser range finder, a moving assembly and a fixing seat, and the fixing seat is used for fixing the laser range finder; the moving assembly is arranged on the base and used for limiting the moving direction of the fixing base in the transverse direction, the longitudinal direction and the vertical direction. The method has the effect of improving the measurement precision.

The invention relates to the technical field of steel production, in particular to rare earth weather-proof angle steel and a manufacturing method thereof, and the manufacturing method comprises the steps of converter / electric furnace steelmaking, LF refining, non-metallic inclusion modification treatment, continuous casting and hot rolling. During steelmaking, the temperature of molten iron entering a furnace is not less than 1250 DEG C, and S is not more than The steel-making end point is controlled to be 0.04%-0.07% of C and 0.005%-0.015% of P; after refining is finished, a Si-Ca wire or a Ca wire is fed for non-metallic inclusion modification treatment, and Ca / Al in molten steel reaches 0.08-0.12; during continuous casting, 0.10-0.16 kg of rare earth elements are added into each ton of steel by adopting a method of feeding rare earth wires into a crystallizer, and the carbon content in the steel is 0.07%-0.14%; and selecting continuous casting crystallizer casting powder matched with the steel grade. By adding La or / and Ce and combining specific operation condition control, the rare earth weather-proof angle steel with a good anti-corrosion effect is obtained.

The utility model relates to a casting slag stopping device, which is used for filtering and stopping scum on the surface of molten aluminum, and comprises a shunting bag and a slag stopping ring, the shunting bag is in a net bag shape, is convenient for filtering the scum and simultaneously is convenient for uniformly shunting the molten aluminum, the shunting bag is adjustably connected below a casting flow table, and the shunting bag is horizontally arranged; a slag blocking ring is further adjustably arranged below the casting flow table and horizontally arranged on the periphery of the flow dividing bag in a surrounding mode, scum in molten aluminum flowing out of the flow dividing bag can be conveniently intercepted, a distance exists between the slag blocking ring and the flow dividing bag, the intercepted scum is located in the distance range, and the slag blocking ring extends downwards into the continuous casting crystallizer. And the lower part of the slag stopping ring is immersed into molten aluminum in the continuous casting crystallizer. According to the utility model, scum is filtered through the shunting bag, and then the scum is gathered in a smaller range through the scum baffle ring, so that the scum is conveniently cleaned manually.

The invention relates to a production method of a continuous casting billet for seawater corrosion resistant steel, and belongs to the technical field of steel. Continuous casting crystallizer casting powder and casting powder layer thickness control are adopted, and the good lubricating effect of the casting powder is guaranteed; according to the section size of a continuous casting machine, surface and internal cracks are prevented from being formed by controlling the continuous casting pulling speed, the superheat degree, the crystallizer water amount, the secondary cooling water amount, the taper, the roll gap shrinkage amount and the like; the center density of the continuous casting billet is improved by controlling the fan-shaped section roll gap shrinkage amount and the soft reduction, the effects of eliminating center shrinkage cavities and looseness and relieving center segregation are achieved, the surface crack occurrence rate of the continuous casting billet for the seawater corrosion resistant steel is smaller than or equal to 0.1%, triangular area cracks are smaller than or equal to 0.5 level, middle cracks are smaller than or equal to 0.5 level, and the center segregation rating is superior to C 1.5 level.

This patent discloses a method for determining the inner cavity taper of an ultra-high-speed billet continuous casting crystallizer. 1) The contraction of the solidified shell in the crystallizer area and the high-temperature deformation of the copper tube are obtained by comprehensive numerical simulation to obtain the three-dimensional change law of the taper of the copper tube of the billet crystallizer in the longitudinal and transverse directions under ultra-high drawing speed; 2) This taper is obtained based on ideal working conditions and is adapted to the length and corner fillet radius of the ultra-high-speed crystallizer used; 3) For ease of manufacturing, several characteristic points are selected in the transverse direction of the solidified billet, and numerical regression is used to obtain the change curve of the crystallizer taper in the vertical direction. The change of the taper between different characteristic points should gradually transition naturally during processing; 4) Based on the difference in solidification shrinkage characteristics of peritectic steel and non-peritectic steel, the tapers of two types of crystallizer copper tubes are designed to meet production needs. According to the present invention, an inner cavity taper curve that ensures efficient heat transfer in the crystallizer can be obtained, laying a foundation for realizing ultra-high-speed continuous casting of billets and ensuring billet quality and smooth continuous casting.

An immersion nozzle for discharging molten steel supplied from a tundish into a mold for continuous casting of a slab includes a discharge portion that supplies the molten steel to the mold, wherein the immersion nozzle includes two regions divided by a plane in a thickness direction, the plane passing through an axial center, the discharge portion includes: a bottom portion; and a side wall that extends in a height direction from an outer edge of the bottom portion, four discharge holes are formed in the discharge portion, two discharge hole are arranged side by side in a width direction in each of the regions in the bottom portion of the discharge portion.

The invention relates to the technical field of continuous casting, in particular to a composite vibration continuous casting crystallizer and a working method thereof. The composite vibration continuous casting crystallizer comprises a crystallizer body composed of wide-edge side walls and narrow-edge side walls, and the two oppositely-arranged wide-edge side walls and the two oppositely-arranged narrow-edge side walls jointly form a cavity for containing metal melt and generating a continuous casting billet. The wide-edge side wall is connected with the horizontal vibration device, the narrow-edge side wall is connected with the vertical vibration device, the wide-edge side wall vibrates in the horizontal direction during continuous casting, and the narrow-edge side wall vibrates in the vertical direction during continuous casting. According to the continuous casting crystallizer, a vibration mode combining horizontal vibration and vertical vibration is adopted, continuous casting billets with slight vibration marks or even no vibration marks can be obtained, meanwhile, a liquid casting powder channel is smooth, and the continuous casting billets in the crystallizer can be cooled more sufficiently and evenly.

An origin seeking device and method for a continuous casting mold vibration system, belonging to the technical field of continuous casting mold vibration control. The origin seeking device includes a mold, a vibration table frame, an electric cylinder, and a positioning base. A origin seeking detection component is arranged on the positioning base. The origin seeking detection component includes an adjustment bracket, proximity switch I, proximity switch II, and proximity switch III. The distance between proximity switch I and proximity switch III is equal to the maximum stroke of the electric cylinder's action trajectory. The height where proximity switch II is located is flush with the height of the movable end of the electric cylinder when the vibration table frame returns to the horizontal position. The beneficial effects of the present invention are that the origin seeking device has a simple structure, is convenient for installation and adjustment, has strong versatility, a long service life, realizes the automatic control of origin seeking, improves the efficiency and accuracy of origin seeking operations, reduces the labor intensity of workers, improves the rhythm of continuous casting pouring, reduces the mechanical failures of the electric cylinder, reduces the breakout accident, and improves the quality of the cast slab.

The invention relates to a self-adaptive control system of a continuous casting crystallizer, which is applied to the field of metal continuous casting and comprises a crystallizer body and a continuous casting crystallization controller. Through the synergistic effect of a shaping cooling roller assembly, a cooling monitoring assembly, a cooling contact regulation and control module and a cooling shaping feedback module, on one hand, the actual state of a casting blank is sensed in real time, and the crystallization cooling process is dynamically adjusted, so that self-adaptive adjustment of the cooling strength is achieved, and the automation and intelligence level of a crystallizer body is remarkably improved; on the other hand, a monitoring mechanism of a casting blank state can be constructed, and abnormal recognition and process deviation correction can be realized at the beginning of quality deviation by collecting action parameters of a crystallizer body and thermal state information of the casting blank in real time, so that the rejection rate and the production cost are effectively reduced, and the production efficiency is improved. The economic benefit of a continuous casting production line is improved.

Provided herein is a system, apparatus, and method for providing casting gas to a direct chill casting mold, and more particularly, to supplying casting gas to a direct chill casting mold at a well-regulated pressure and volume using fluid injectors. Systems for supplying casting gas to a continuous casting mold can include: a continuous casting mold cavity; a casting gas supply line; an injector receiving casting gas from the casting gas supply line; and a post injector casting gas supply line, where the casting gas supply line provides casting gas at a pressure above 300 psi (pounds per square inch) to an input of the injector, where a controller controls the injector to supply casting gas via the post injector casting gas supply line to the continuous casting mold cavity.

The present application belongs to the technical field of liquid surface fluctuation evaluation of crystallizer molten steel, and particularly relates to a liquid surface fluctuation evaluation and regulation method for a thin slab continuous casting crystallizer with a multi-hole submerged entry nozzle. The method comprises the following steps: obtaining the width and thickness of the thin slab continuous casting crystallizer; obtaining the area of each outlet on one side of the multi-hole submerged entry nozzle of the thin slab continuous casting crystallizer, and respectively calculating the weight value of each outlet in molten steel flow distribution; obtaining the typical casting speed and submerged entry nozzle immersion depth used during stable production of the thin slab continuous casting machine; obtaining the position, speed and angle of the molten steel jet impact on the narrow surface of the crystallizer; calculating the liquid surface fluctuation index of each outlet jet according to the outlet area weight value; mathematically adding the liquid surface fluctuation index of each outlet jet to obtain a comprehensive liquid surface fluctuation index; and controlling the comprehensive liquid surface fluctuation index within a reasonable range by adjusting the production parameters such as casting speed and submerged entry nozzle immersion depth to achieve the purpose of regulating the liquid surface fluctuation of the crystallizer.

The present application relates to continuous casting pouring technical field, especially to a kind of titanium-containing alloy steel liquid's continuous casting pouring device and method, including ladle and tundish and workstation, workstation is rotatably installed with load plate, two ladle positions for placing ladle are opened in load plate, the bottom of workstation is fixedly connected with the induction coil long shroud that is communicated with ladle, tundish is fixedly connected with breather bushing, breather bushing is inserted with breather stopper, tundish outside is equipped with tank for guiding argon, the bottom of tundish is provided with induction coil submerged entry nozzle, for guiding molten steel into continuous casting crystallizer, tundish bottom is provided with slow flow mechanism for slowing down the impact force of molten steel falling, the argon is injected in the breather stopper, the titanium-containing steel with poor fluidity is not dead in tundish nozzle, after molten steel flows into tundish nozzle, induction coil submerged entry nozzle also generates induction magnetic field, so that molten steel does not solidify before entering crystallizer.

The application provides a thin slab continuous casting crystallizer copper plate with a cooling structure and relates to the technical field of metallurgical continuous casting. In the two flat parts of the cooling surface, each flat part includes high-temperature zone flow guide cooling ribs, transition zone flow guide cooling ribs and low-temperature zone flow guide cooling ribs between the two adjacent cooling zones, and the height and width of the high-temperature zone flow guide cooling ribs are smaller than the height and width of the transition zone flow guide cooling ribs and the height and width of the low-temperature zone flow guide cooling ribs; the cooling water groove includes high-temperature zone cooling water grooves, transition zone cooling water grooves and low-temperature zone cooling water grooves, and the width of the high-temperature zone cooling water grooves is larger than the width of the transition zone cooling water grooves and the width of the low-temperature zone cooling water grooves. Through the optimized design of the high-temperature zone, the cooling capacity of the copper plate is improved, the temperature of the hot surface of the eddy current zone with high heat flux density is reduced, the occurrence of the copper plate crack phenomenon is improved or completely eliminated, and the service life of the copper plate is prolonged.