14 results about "Strip casting" patented technology

The present application relates to the technical field of stainless steel thin strip continuous casting, and provides a method for improving the solidification stability of thin strip continuous casting stainless steel, which comprises the following steps: obtaining an initial parameter set of the thin strip; obtaining an initial process parameter set; performing thin strip continuous casting in combination with the obtained process parameter set; measuring the molten pool liquid level, the casting and rolling force, the casting roll surface temperature and the casting strip surface temperature in real time during the thin strip continuous casting process; judging according to a judgment condition; if adjustment is needed, obtaining an adjusted process parameter set and returning; otherwise, proceeding to the next step; completing the thin strip continuous casting to obtain a thin strip product. In the present application, the molten pool liquid level, the casting and rolling force, the casting roll surface temperature and the casting strip surface temperature during the thin strip continuous casting process are measured in real time and judged according to corresponding judgment conditions, and through the establishment of real-time collaborative control of "liquid level-heat transfer-casting and rolling force-roll gap", the surface quality and the microstructure uniformity are improved while ensuring the continuous and stable production of stainless steel casting strip with a thickness of ≤2 mm.

This invention provides a slitting device, including a grooved roller and multiple sets of slitting cutters. The grooved roller is rotatable around a central axis, with its outer circumference in contact with the material for continued downstream conveying and for cutting the material together with the multiple sets of slitting cutters. The outer roller surface of the grooved roller has multiple concentric annular grooves along its radial direction, spaced axially, with each groove coaxial with the grooved roller. The multiple sets of slitting cutters are suspended above the grooved roller by a cutter support frame, and their positions on the support frame are adjustable along the axial direction of the grooved roller via a cutter adjustment assembly. The blades of the slitting cutters are detachably mounted on the cutters via a blade changing assembly. This invention also proposes a steel strip casting machine equipped with this slitting device. This invention can shorten the blade replacement time of the slitting device, improve blade changing efficiency, simplify blade changing operations, and ensure the production progress of the steel strip casting machine.

The application discloses a distributor moving mechanism for thin strip continuous casting and relates to the technical field of thin strip continuous casting.The application comprises a trolley, a trolley bracket and a trolley; the distributor is heated to a required temperature by a distributor oven and is used in a thin strip continuous casting process; a working position of the trolley is a casting position; the trolley and the trolley bracket are arranged in two layers in a top-bottom mode; the trolley comprises a trolley body, a trolley driving wheel, a trolley driven wheel, the trolley bracket, an oil cylinder, a trolley guide wheel and a trolley track; the trolley comprises a trolley body, a trolley driving wheel, a trolley driven wheel, the trolley bracket, a jack, a trolley guide wheel and a trolley track.The technical scheme is independently operated, compact in structure and accurate in action; is independent of each other, higher in operation degree in process; has greater load, higher speed and shorter replacement time; shortens the replacement interval of the distributor; can adapt to the structure of the continuously improved distributor; and is convenient for actual operation and different situations.

This application provides a thin strip casting and rolling cooling device and method, belonging to the field of industrial control. The device includes a main control network element, a preceding node, a voltage stabilization and compensation network element, and a following node. The main control network element is used to send action signals to the preceding node, compensation requests to the voltage stabilization and compensation network element, and status signals to the following node within the same time interval. In transient autonomous mode, the following node shields global commands and outputs local control commands based on the local pressure obtained by the local pressure probe and a preset relationship. The main control network element is also used to send a status signal carrying a second indicator bit after receiving a ready signal, triggering the following node to return to steady-state following mode. The thin strip casting and rolling cooling device and method provided in this application overcomes the temperature control inaccuracy caused by pipeline transients and maintains the stability of fine-tuning flow rate through transient autonomous control based on local pressure.

This invention belongs to the field of solidification heat transfer technology and relates to a method for calculating the interfacial heat flux density during twin-roll thin strip casting. The method involves a model of the relationship between casting speed and interfacial heat transfer in the sub-rapid solidification of low-carbon steel twin-roll thin strip casting. This model can accurately predict the heat transfer at the roll / steel interface under different casting speeds, which is beneficial for controlling the interfacial heat transfer in thin strip casting and ultimately achieving intelligent control of the thin strip casting process.

This invention relates to a production process for copper strip material of VC heat exchange plate, belonging to the field of metal materials technology, and includes the following steps: The components are weighed according to the following mass fractions: Ag: 0.05-0.25%; Zr: 0.05-0.15%; Cr: 0.05-0.20%, with the balance being Cu and unavoidable impurities; the aforementioned components are melted, and the melt is introduced into a twin-roll thin strip casting mill for rapid solidification and casting to obtain a cast strip billet; subsequently, online solution treatment and high-pressure gas-water mist composite quenching are performed; then, the strip billet is subjected to single-pass high-deformation warm rolling; finally, graded aging and controlled annealing are performed. The copper strip material obtained by this invention has high tensile strength and yield strength, high thermal conductivity and high thermal diffusion efficiency, achieving an excellent synergy between high strength and ultra-high thermal conductivity. The obtained copper alloy strip also has excellent etching and brazing properties, which can meet the needs of precision manufacturing.

This invention relates to the field of twin-roll thin strip casting and rolling technology, specifically disclosing a composite side sealing plate applied to the twin-roll thin strip casting and rolling process. The thermal conductivity, elastic modulus, and coefficient of linear expansion of the composite side sealing plate vary gradients along the thickness direction; or the thermal conductivity, elastic modulus, and coefficient of linear expansion of the composite side sealing plate vary gradients along the height direction. Therefore, when this composite side sealing plate is applied to the twin-roll thin strip casting and rolling process, it can effectively reduce the maximum thermal stress generated by the composite side sealing plate, avoid cracks or even fractures caused by the interaction between thermal stress and supporting force, and improve the service life of the composite side sealing plate.

The application belongs to the technical field of alloy preparation, and discloses a preparation method of a rapidly solidified iron-based alloy strip, which comprises the following steps: weighing electrolytic iron, monocrystalline silicon, carbon powder and diiron trioxide, vacuum smelting, and repeatedly smelting and cooling to obtain a cast-state master alloy. The master alloy is cut and placed in a quartz tube, and is smelted and strip cast at specific parameters to prepare the rapidly solidified iron-based alloy strip. The parameters for preparing the Fe-O system strip sample are set as follows: the rotating speed of the copper wheel is 2050 r / min, the injection gas pressure is 0.002 MPa, and the distance from the nozzle to the copper wheel is 0.02 mm; the parameters for preparing the Fe-Si-C-O system strip sample are set as follows: the rotating speed of the copper wheel is 2400 r / min, the injection gas pressure is 0.004 MPa, and the distance from the nozzle to the copper wheel is 0.03 m, so that the accurate proportioning of alloy components is ensured, the rapid solidification of the alloy is realized by using the chilling strip casting function of the high-vacuum induction smelting strip caster, the alloy organization is significantly refined, the mechanical properties of the material are improved, the experience summary of the operator is not needed, and the standardization during production is improved.

The present application belongs to the technical field of steel production, and particularly relates to a low-cost thin-gauge high-strength steel with a yield strength of 800 MPa and a production method thereof, and the thickness of the steel coil is 0.8-1.6 mm. The present application is based on a thin-strip casting and rolling production method, molten steel is obtained by thin-strip continuous casting, the cast strip is obtained by single-pass hot rolling and air mist cooling, and the hot-rolled coil is obtained by coiling. The chemical composition of the molten steel includes, by mass percentage, C: 0.20-0.25%; Si: 0.30-0.60%; Mn: 1.20-1.70%; Al: ≤0.003%; P: ≤0.020%; S: ≤0.004%, and the balance is Fe and inevitable impurity elements. The present application solves the problem that the traditional hot-rolling process is difficult to produce thin-gauge high-strength products, and solves the problem that the cost of the cast-rolling process for producing high-strength steel is high. The method of the present application can produce thin-gauge steel strips with a yield strength of ≥800 MPa and a breaking elongation of ≥10% by using low-cost molten steel ingredients, in combination with subsequent process flows and specific parameters.

The utility model discloses a kind of non-crystalline strip casting ladle, it is related to non-crystalline strip casting technical field, including shell, the top of shell is provided with limiting component and monitoring component, the inside of shell is provided with flow guide component, the limiting component includes the limiting pipe being communicated in the top of shell, the top of limiting pipe is fixedly installed with reset spring, the top of reset spring is fixedly installed with baffle, the bottom of baffle is fixedly installed with pull rod, pull rod is fixedly installed with resistance bar in one end inside shell, the side of limiting pipe is communicated with feed pipe, the monitoring component includes the standpipe being communicated in the top of shell.The non-crystalline strip casting ladle disclosed in the utility model has limiting component and monitoring component set, temperature in ladle is conveniently adjusted and monitored during use, so as to conveniently control the temperature of the ladle in real time, improve the use convenience of the ladle, thereby improve the use efficiency of the ladle, facilitate the effect of subsequent operation.

The present application belongs to the field of steel material and short process near-net shape manufacturing technology, and relates to a method for producing heat treatment free tool steel for shallow stamping based on thin strip casting and rolling. The production method comprises the following steps: smelting, obtaining 1.5-2.5 mm cast strip through thin strip casting and rolling, single pass hot rolling, air mist cooling to 680-740 DEG C and coiling, and then placing the steel coil in a holding pit for more than 4 hours. The present application utilizes the sub-rapid solidification characteristics of thin strip casting, combines controlled cooling and holding process, and directly obtains a mixed structure containing ferrite, fine lamellar sorbite with a lamellar spacing of 100-160 nm and not less than 30% granular carbide in the hot rolled state, so that the material has high strength and excellent plasticity, and can be directly used for shallow stamping forming without subsequent spheroidizing annealing, thereby greatly shortening the process, reducing energy consumption and cost.

The present application belongs to the field of steel material and short process manufacturing technology, and relates to a method for producing tool steel based on thin strip casting and rolling. The production method comprises the following steps: smelting, obtaining cast strip through thin strip casting and rolling, single-pass hot rolling, air mist cooling to 520-580 DEG C and coiling, and obtaining hot-rolled thin strip with a thickness of 0.6-1.5 mm. The present application utilizes the thin strip casting and rolling sub-rapid solidification and low-temperature coiling process to obtain hot-rolled state organization of extremely fine lamellar troostite with a lamellar spacing of 40-80 nm. The organization has extremely high interface energy, can be used as the initial organization of spheroidizing annealing, can omit the cold rolling process in the traditional process, can significantly shorten the spheroidizing annealing time to 4 hours or less, can greatly improve the production efficiency, and can reduce the energy consumption.

The application belongs to the technical field of double-roller casting and provides a method for improving the ribbing of a steel coil. The method eliminates the defects of local partial thickening or thinning in the width direction of the casting strip by separately adjusting the diameter and rotating speed of the segmented roller brush unit, so that the casting strip profile is smooth and flat. After hot rolling and coiling, the surface of the hot-rolled steel coil is free of ribbing defects, and the surface quality and qualification rate of the thin-strip cast steel coil are improved.

The utility model relates to continuous casting nozzle technical field provides a kind of thin strip continuous casting core nozzle, including nozzle and adjusting structure, the inside of the nozzle is provided with inner chamber, the inside of the inner chamber is provided with adjusting structure.The utility model is provided with adjusting structure, by starting deceleration motor and driving flow guide plate rotation, and then it is convenient to control the flow speed of metal liquid, and the inside of flow guide plate is provided with porous structure, to be able to disperse metal flow, improve the uniformity of metal liquid, and then make metal liquid from flow guide groove outward under the inclination angle of boss Stable casting, avoid the uneven thickness of strip or broken strip caused by flow fluctuation.