ES2221659T3 - PROCEDURE FOR THE GENERATION OF A HOT LAMINATED BAND OF A STEEL THAT PRESENTS A LIFTED CONTENT OF MANGANESE. - Google Patents
PROCEDURE FOR THE GENERATION OF A HOT LAMINATED BAND OF A STEEL THAT PRESENTS A LIFTED CONTENT OF MANGANESE.Info
- Publication number
- ES2221659T3 ES2221659T3 ES01991793T ES01991793T ES2221659T3 ES 2221659 T3 ES2221659 T3 ES 2221659T3 ES 01991793 T ES01991793 T ES 01991793T ES 01991793 T ES01991793 T ES 01991793T ES 2221659 T3 ES2221659 T3 ES 2221659T3
- Authority
- ES
- Spain
- Prior art keywords
- previous
- strip
- casting
- hot
- hot rolled
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims description 20
- 239000011572 manganese Substances 0.000 title abstract description 11
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 title abstract description 9
- 229910052748 manganese Inorganic materials 0.000 title abstract description 9
- 238000005266 casting Methods 0.000 claims abstract description 30
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 21
- 239000010959 steel Substances 0.000 claims abstract description 21
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims abstract description 3
- 238000001816 cooling Methods 0.000 claims description 18
- 238000005096 rolling process Methods 0.000 claims description 14
- 238000005098 hot rolling Methods 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 description 15
- 238000007711 solidification Methods 0.000 description 10
- 230000008023 solidification Effects 0.000 description 10
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000003475 lamination Methods 0.000 description 6
- 238000004804 winding Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000012467 final product Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000005469 granulation Methods 0.000 description 3
- 230000003179 granulation Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910001566 austenite Inorganic materials 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012768 molten material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/021—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips involving a particular fabrication or treatment of ingot or slab
- C21D8/0215—Rapid solidification; Thin strip casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0622—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by two casting wheels
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
- C21D8/0221—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
- C21D8/0226—Hot rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/46—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
- B21B1/463—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a continuous process, i.e. the cast not being cut before rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B3/02—Rolling special iron alloys, e.g. stainless steel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B9/00—Measures for carrying out rolling operations under special conditions, e.g. in vacuum or inert atmosphere to prevent oxidation of work; Special measures for removing fumes from rolling mills
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Metal Rolling (AREA)
- Continuous Casting (AREA)
- Heat Treatment Of Sheet Steel (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Heat Treatment Of Steel (AREA)
Abstract
Description
Procedimiento para la generación de una banda laminada en caliente de un acero que presenta un contenido elevado de manganeso.Procedure for the generation of a band hot rolled of a steel that has a high content Manganese
La invención se refiere a un procedimiento para generar una banda laminada en caliente de un acero que presenta un elevado contenido de manganeso, de más de un 12 hasta un 30 por ciento de peso. Aceros de este tipo se caracterizan por su resistencia particularmente elevada.The invention relates to a method for generate a hot rolled strip of a steel that presents a high manganese content, from more than 12 to 30 per weight percent Steels of this type are characterized by their particularly high resistance.
Un problema con la fabricación y la elaboración de aceros, que presentan un contenido elevado de manganeso de este tipo, consiste en el hecho de que presentan un comportamiento de solidificación, que se distingue de los aceros usuales, destinados para empleos de embutición profunda, como aceros al carbono IF o bajo. De esta forma se muestra que en aceros con un alto contenido en manganeso, colados en una fundición de colada continua de desbastes convencionales, presentan en el tipo al que se refiere, un mal comportamiento de transformación.A problem with manufacturing and processing of steels, which have a high manganese content of this type, consists in the fact that they exhibit a behavior of solidification, which differs from the usual steels, intended for deep drawing jobs, such as IF carbon steels or low. This shows that in steels with a high content in manganese, cast in a continuous casting casting of conventional slabs, present in the type to which it refers, a bad transformation behavior.
De acuerdo con un procedimiento conocido de DE 199 00 199 A1 se pueden generar aceros, que aparte de otros elementos de aleación, contienen un 7 hasta un 27 de Mn, por la colada de bandas delgadas como una banda en la proximidad de las dimensiones finales y elaboración a una banda laminada en caliente. El material obtenido de esta forma es adecuado de un modo particular para el empleo en la zona de la construcción de carrocería de automóviles.In accordance with a known ED procedure 199 00 199 A1 steels can be generated, which apart from others Alloy elements, contain a 7 to 27 Mn, by the Thin band casting as a band in the vicinity of the final dimensions and elaboration to a hot rolled strip. The material obtained in this way is suitable in a way particular for employment in the area of construction of car body.
La tarea de la invención consiste en indicar un procedimiento, que posibilite la generación de bandas de acero, que a pesar de un elevado contenido de manganeso posean un buen comportamiento de transformación.The task of the invention is to indicate a procedure, which enables the generation of steel bands, which despite a high manganese content they have a good transformation behavior
Se soluciona esta tarea por un procedimiento para la generación de una banda laminada en caliente que presenta unas propiedades TWIN y TRIP de un acero que contiene más de un 12 hasta un 30% de peso de manganeso, en el cual se funde una colada en una máquina de fundición de dos rodillos a una banda previa con unas dimensiones próximas a las finales, con un espesor de hasta 6 mm, que a continuación de la fundición se elabora ulteriormente de modo continuo a una banda laminada en caliente, y en el cual se lamina en una sola mesa de laminación en caliente al espesor final de la banda laminada en caliente.This task is solved by a procedure to the generation of a hot rolled strip that presents some TWIN and TRIP properties of a steel containing more than 12 up to 30% manganese weight, in which a casting melts in a two roller casting machine to a previous band with some dimensions close to the end, with a thickness of up to 6 mm, that after the casting is further elaborated so continuous to a hot rolled strip, and in which it is laminated on a single hot rolling table to the final thickness of the hot rolled strip.
De acuerdo con la invención se funde acero con un elevado contenido de manganeso a un material previo, cuyas dimensiones se aproximan a las dimensiones finales de la banda laminada en caliente. De esta forma ya en el proceso de colada se genera un material delgado de tal forma que se asegura una solidificación esencialmente igualada sobre toda su sección transversal. Sorprendentemente se ha mostrado, que el material previo colado de este modo, en la proximidad de las dimensiones finales, presenta una estructura esencialmente de granulación más fina y más igualada que una banda de acero generada de modo convencional con un contenido de manganeso comparablemente elevado. La banda laminada en caliente generada del material previo posee propiedades TRIP ("Plasticidad inducida por transformación") y TWIP ("Plasticidad inducida por acoplamiento") y correspondientemente presenta una buena transformabilidad, que la hace particularmente adecuada, en combinación con la elevada rigidez, para la construcción de carrocerías.According to the invention, steel is melted with a high manganese content to a previous material, whose dimensions approximate the final dimensions of the band hot rolled. In this way, in the casting process, generates a thin material in such a way that ensures a essentially equalized solidification over its entire section cross. Surprisingly it has been shown, that the material previous casting in this way, in the proximity of the dimensions late, it presents an essentially granulation structure more thinner and more even than a steel band generated so conventional with a comparablely high manganese content. The hot rolled strip generated from the previous material has TRIP properties ("Transformation-induced plasticity") and TWIP ("Coupling-induced plasticity") and correspondingly it presents a good transformability, that the makes it particularly suitable, in combination with the high rigidity, for the construction of bodies.
De acuerdo con la invención, a ser posible, el espesor del material generado debe ser reducido. Cuanto más delgado sea el material previo fundido, más fina es la estructura de solidificación y menos pueden perturbar los fallos en relación con la solidificación en la elaboración ulterior a una banda laminada en caliente. Al mismo tiempo con un producto previo fundido delgado se puede dirigir de modo bien calculado el procedimiento de la solidificación de un modo sencillo. De esta forma en un procedimiento controlado se puede tener en cuenta la circunstancia, que particularmente con aceros del tipo en cuestión aquí, la velocidad de solidificación tiene una influencia inmediata sobre la cantidad y la distribución de microsedimentaciones. Estas influencian a su vez el crecimiento de la granulación y la situación de las sedimentaciones que se originan durante la solidificación, como MnS, AlN y Ti (C, N). Por una dirección dirigida de los parámetros de la estructura del material previo colado se pueden ajustar por tanto las bases, que influencian de modo decisivo en la transformabilidad y en las propiedades de uso del producto final.According to the invention, if possible, the Thickness of generated material should be reduced. The thinner be the previous molten material, the finer the structure of solidification and less can disturb the failures in relation to solidification in further processing to a laminated strip hot. At the same time with a thin cast pre-product the procedure of the solidification in a simple way. In this way in a controlled procedure can take into account the circumstance, that particularly with steels of the type in question here, the solidification rate has an immediate influence on the quantity and distribution of microediments. These in turn influence the growth of granulation and situation of sedimentations that originate during the solidification, such as MnS, AlN and Ti (C, N). By one direction directed of the parameters of the structure of the previous material casting can therefore be adjusted bases, which influence of decisive mode in transformability and use properties of the final product.
La colada del acero tiene lugar de acuerdo con la invención en una máquina de colada de dos rodillos. Este tipo de máquina de colada conocido de por sí, hace posible generar un material previo particularmente delgado, con unas dimensiones muy próximas a las dimensiones finales de la banda laminada en caliente, cuyo comportamiento de solidificación, en particular su velocidad de solidificación y su igualdad lleva a una estructura de fundición óptima y con ello una transformabilidad ampliamente optimizada.Steel casting takes place in accordance with the invention in a two roller casting machine. This type of laundry machine known per se, makes it possible to generate a particularly thin previous material, with very large dimensions close to the final dimensions of the laminated strip in hot, whose solidification behavior, particularly its solidification speed and its equality leads to a structure of optimal casting and with it a widely transformable optimized
Sorprendentemente se ha mostrado, que por el hecho de que de la banda previa se lamina en solo una única pasada en una banda laminada en caliente al espesor final, se pueden lograr particularmente buenos resultados de trabajo. La correlación continua inmediata del proceso de colada y del laminado en caliente subsiguiente en una pasada posibilita arrastrar el calor del proceso de fundición en el proceso de laminado, de modo que con una fundición de un desbaste convencional, se puede evitar el paso siempre necesario del nuevo calentamiento antes de la laminación en caliente. El "arrastre" del calor de fundición evita además un crecimiento excesivo de los cristales y apoya así adicionalmente la formación de una estructura fina en el material previo.Surprisingly it has been shown, that by the fact that the previous band is laminated in only one single pass in a hot rolled strip to the final thickness, they can be achieved Particularly good work results. The correlation immediate continuation of the casting process and hot rolling subsequent in one pass makes it possible to drag heat from casting process in the rolling process, so that with a casting of a conventional roughing, the passage can be avoided always necessary of the new heating before lamination in hot. The "drag" of the smelting heat also prevents excessive growth of the crystals and thus additionally supports the formation of a fine structure in the previous material.
Debido a una influencia particular del proceso de solidificación sobre las propiedades del producto final, es ventajoso cuando la elaboración ulterior del material previo a una banda laminada en caliente abarca un enfriamiento controlado que tiene lugar inmediatamente a continuación de la colada. Esto lo posibilita que se enfríe de tal forma el material que sale de la coquilla de fundición de modo selectivo, que se obtiene una estructura optimizada para la elaboración ulterior. Con ello el enfriamiento por norma tendrá lugar con una velocidad de enfriamiento más elevada que el enfriamiento al aire.Due to a particular influence of the process of solidification on the properties of the final product, is advantageous when further processing of the material prior to a hot rolled strip covers controlled cooling that It takes place immediately after the laundry. This what it allows the material that comes out of the die casting selectively, that you get a Optimized structure for further processing. With it the Standard cooling will take place with a speed of higher cooling than air cooling.
Ensayos han mostrado que en dependencia de la composición y de las propiedades deseadas del producto final, la temperatura media de comienzo de la laminación, con la cual entra el material previo en el equipo de laminación, puede encontrarse entre 1100°C y 750°C.Essays have shown that depending on the composition and desired properties of the final product, the average start temperature of the lamination, with which it enters the previous material in the rolling equipment, can be found between 1100 ° C and 750 ° C.
Tanto en cuanto se lamina en caliente el material previo, se pueden influenciar las propiedades de la banda laminada en caliente de modo selectivo por el hecho de que la banda laminada en caliente se enfría de modo controlado a continuación de la laminación en caliente.As long as the material is hot rolled Previously, the properties of the laminated strip can be influenced hot selectively due to the fact that the laminated strip hot cools in a controlled manner following the hot rolling.
Básicamente se puede pensar que la banda laminada en caliente obtenida de acuerdo con la invención, "en línea" a modo de ejemplo de continuar con la elaboración a una banda laminada en frío. En muchos casos será sin embargo necesario que se bobine la banda durante la elaboración ulterior sobre una bobina en relación con los posibles pasos de elaboración subsiguientes, o las propiedades a ajustar de la banda laminada en caliente.Basically you can think that the laminated strip hot obtained according to the invention, "in line" as an example of continuing with the elaboration of a band cold rolled. In many cases, however, it will be necessary to wind the belt during further processing on a coil in relationship with possible subsequent processing steps, or properties to adjust the hot rolled strip.
Por el hecho de que la elaboración ulterior del material previo a una banda laminada en caliente tiene lugar al menos en secciones bajo una atmósfera de gas protector, se puede evitar una oxidación de la superficie de la banda y con ello ampliamente una formación de óxido en exceso. En este contexto es particularmente ventajoso cuando el material previo se mantiene al menos hasta su entrada en el equipo de laminado bajo una atmósfera de gas protector.Due to the fact that the further elaboration of the material prior to a hot rolled strip takes place at less in sections under a protective gas atmosphere, you can avoid oxidation of the surface of the band and with it widely an excess oxide formation. In this context it is particularly advantageous when the previous material is maintained at less until its entry into the rolling equipment under an atmosphere of protective gas.
Los aceros que entran en aplicación de acuerdo con la invención pueden contener, aparte de otros elementos de aleación, hasta un 3,5% de peso de silicio en particular de hasta un 3% de peso. Aparte de esto pueden presentar hasta un 3,5% de peso, en particular hasta un 3% de peso de aluminio. Hierro y aluminio respectivamente hierro y silicio forman en aceros del tipo elaborado de acuerdo con la invención fases intermetálicas, que se originan debajo de la temperatura de la formación en caliente y que son estables hasta la temperatura ambiente.The steels that come into application according with the invention may contain, apart from other elements of alloy, up to 3.5% of silicon weight in particular up to 3% weight. Apart from this they can present up to 3.5% of weight, in particular up to 3% aluminum weight. Iron and aluminum respectively iron and silicon form in steels of type developed according to the invention intermetallic phases, that originate below the temperature of the formation in hot and they are stable to room temperature.
A continuación se aclara en mayor detalle la invención por medio de un ejemplo de realización. Muestran:The following clarifies in greater detail the invention by means of an exemplary embodiment. They show:
Figura 1 la construcción de un dispositivo para la generación de una banda en caliente en una vista lateral esquemática,Figure 1 the construction of a device for generating a hot band in a side view schematic,
Diagrama del transcurso de la temperatura sobre el tiempo de elaboración de la banda previa y de la banda laminada en caliente en un dispositivo de acuerdo con la figura 1.Diagram of the temperature course over the processing time of the previous band and the laminated band hot in a device according to figure 1.
Imagen 1 un corte ampliado por el alcance de borde de la banda laminada en caliente generada en el dispositivo de acuerdo con la figura 1,Image 1 a cut enlarged by the scope of edge of the hot rolled strip generated in the device according to figure 1,
Imagen 2 un corte ampliado por el alcance central de la banda laminada en caliente generada en el dispositivo de acuerdo con la figura 1.Image 2 a cut extended by the central reach of the hot rolled strip generated in the device according to figure 1.
La figura 1 muestra esquemáticamente la construcción de un dispositivo (1) para la generación de una banda laminada en caliente (W), que abarca un dispositivo de fundición (2), un primer tramo de enfriamiento (3), un equipo de laminado (4), un segundo tramo de enfriamiento (5) y una instalación de bobinado (6).Figure 1 schematically shows the construction of a device (1) for the generation of a band hot rolled (W), which encompasses a casting device (2), a first section of cooling (3), a rolling equipment (4), a second section of cooling (5) and an installation of winding (6).
En el dispositivo de fundición (2) construido de acuerdo con el principio conocido de una máquina de fundición de dos rodillos ("laminador doble") se funde una colada (S) contenida en un embudo (7), de una composición aclarada a continuación en particular en el resquicio de colada (10) formada entre los dos rodillos de fundición (8, 9) a una banda previa (V). La banda previa (V) fundida abandona el espacio de fundición (10) en un paso de avance continuo con un espesor, que puede variar entre menos de 1 mm y 6 mm.In the casting device (2) constructed of According to the known principle of a casting machine two rollers ("double laminator") melts a laundry (S) contained in a funnel (7), of a composition clarified to particular continuation in the casting gap (10) formed between the two cast iron rollers (8, 9) to a previous band (V). The previous band (V) melted leaves the casting space (10) in a step of continuous advance with a thickness, which can vary between less than 1 mm and 6 mm.
La banda previa (V) se enfría de modo controlado en su camino al equipo de laminación (4) en el primer tramo de enfriamiento (3) debajo de la salida del resquicio de colada (10) y colocado en la proximidad cercana de este con unos medios de enfriamiento aplicados sobre sus superficies.The previous band (V) is cooled in a controlled way on its way to rolling equipment (4) in the first section of cooling (3) below the outlet of the casting gap (10) and placed in the near proximity of this with some means of cooling applied on their surfaces.
El tramo de avance de recorrido que se encuentra entre la salida del resquicio de colada (10) y el equipo de laminación (4) de la banda delgada (V) está rodeado por un alojamiento (11), en el cual se mantiene una atmósfera de gas protector. De esta forma se evita un contacto de la superficie de la banda con el oxígeno del aire del entorno.The section of advance of route that is between the outlet of the casting gap (10) and the equipment lamination (4) of the thin band (V) is surrounded by a housing (11), in which a gas atmosphere is maintained protective. This avoids contact of the surface of the band with the oxygen from the surrounding air.
La banda delgada (V) transcurre en el equipo de laminado (4) con una temperatura de comienzo de laminado (AT) y se lamina en él en una pasada a su espesor final.The thin band (V) runs on the computer laminate (4) with a rolling start temperature (AT) and se laminate on it in one pass to its final thickness.
La banda laminada en caliente (W) que abandona el equipo de laminado (4) con una temperatura de final de laminado (ET) pasa inmediatamente a continuación al segundo tramo de enfriamiento (5). En el tramo de enfriamiento (5) se controla la banda laminada en caliente (W) de nuevo con un medio de enfriamiento adecuado y se lleva a la temperatura de bobinado (HT), con la cual se bobina finalmente en la instalación de bobinado (6) en una bobina (C).The hot rolled strip (W) that leaves the rolling equipment (4) with a rolling end temperature (ET) immediately goes on to the second section of cooling (5). In the cooling section (5) the hot rolled strip (W) again with a medium of proper cooling and is brought to the winding temperature (HT), with which it is finally wound in the winding installation (6) in a coil (C).
En el diagrama adjunto se han representado la temperatura de comienzo del laminado (AT), la temperatura de final de laminado (ET) y la temperatura de bobinado (HT) sobre el tiempo de elaboración después de la colada en el ancho de banda, que se pueden ajustar en dependencia de la composición y de las propiedades deseadas de la banda laminada en caliente a generar sobre un dispositivo formado de acuerdo con la figura 1. Por una dirección adecuada de la temperatura a lo largo de una curva de límite indicada previamente, con a continuación un mantenimiento isotérmico, el laminado y el enfriamiento, se deja congelar la estructura de granulación fina de la banda laminada en caliente después de la salida del equipo de laminación, de modo que las buenas propiedades de uso de la banda laminada en caliente se mantienen después de la laminación en caliente. En particular entonces, cuando el transcurso de la temperatura de la banda previa y de la banda laminada en caliente de la curva de límite inferior representada en el diagrama se han aproximado, se puede alcanzar este efecto.In the attached diagram the laminate start temperature (AT), end temperature Rolling (ET) and winding temperature (HT) over time processing after casting in the bandwidth, which they can adjust depending on the composition and the desired properties of the hot rolled strip to be generated on a device formed according to figure 1. By a proper direction of temperature along a curve of limit indicated previously, with maintenance below isothermal, rolling and cooling, let the fine granulation structure of the hot rolled strip after the exit of the rolling equipment, so that the Good use properties of the hot rolled strip will They keep after hot rolling. In particular then, when the course of the previous band temperature and of the hot rolled strip of the lower limit curve represented in the diagram have been approximated, can be reached this effect
La colada (S) fundida en el ejemplo de realización presentó aparte de las impurezas inevitables usuales un contenido de Mn de un 20% de peso, un contenido de C de un 0,003% de peso, un contenido de azufre de 0,007% de peso, un contenido de Si de 3,0% de peso, un contenido de Al de 3,0% de peso y como resto hierro.The cast (S) cast in the example of realization presented apart from the usual inevitable impurities a Mn content of 20% weight, C content of 0.003% of weight, a sulfur content of 0.007% of weight, a content of If of 3.0% of weight, a content of Al of 3.0% of weight and like rest iron.
La imagen 1 presenta un corte ampliado por el alcance de borde y la imagen 2 un corte ampliado de la misma forma por el alcance central de una banda laminada en caliente de este acero generada en el dispositivo representado en la figura. Se muestra que la banda presenta una estructura dendrítica formada, que consta de austenita y una segunda fase que se sospecha contiene carbono. En el núcleo de la banda se presenta claramente un afinado de la estructura.Image 1 presents an enlarged cut by the edge reach and image 2 an enlarged cut in the same way by the central reach of a hot rolled strip of this steel generated in the device shown in the figure. Be shows that the band has a dendritic structure formed, consisting of austenite and a second phase that is suspected contains carbon. In the core of the band a refined structure.
Claims (11)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10060948 | 2000-12-06 | ||
| DE10060948A DE10060948C2 (en) | 2000-12-06 | 2000-12-06 | Process for producing a hot strip from a steel with a high manganese content |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES2221659T3 true ES2221659T3 (en) | 2005-01-01 |
Family
ID=7666209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES01991793T Expired - Lifetime ES2221659T3 (en) | 2000-12-06 | 2001-12-06 | PROCEDURE FOR THE GENERATION OF A HOT LAMINATED BAND OF A STEEL THAT PRESENTS A LIFTED CONTENT OF MANGANESE. |
Country Status (11)
| Country | Link |
|---|---|
| US (2) | US20040074628A1 (en) |
| EP (1) | EP1341937B1 (en) |
| JP (1) | JP3836793B2 (en) |
| CN (1) | CN1236076C (en) |
| AT (1) | ATE267269T1 (en) |
| AU (1) | AU2002231664A1 (en) |
| CZ (1) | CZ304928B6 (en) |
| DE (2) | DE10060948C2 (en) |
| ES (1) | ES2221659T3 (en) |
| PL (1) | PL196538B1 (en) |
| WO (1) | WO2002046480A1 (en) |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004050220A (en) | 2002-07-18 | 2004-02-19 | Ishikawajima Harima Heavy Ind Co Ltd | Facility for producing strip |
| DE10259230B4 (en) | 2002-12-17 | 2005-04-14 | Thyssenkrupp Stahl Ag | Method for producing a steel product |
| DE102004054444B3 (en) * | 2004-08-10 | 2006-01-19 | Daimlerchrysler Ag | Method for making steel articles with high rigidity and plasticity comprises mechanical shaping of steel in which twinning induce plasticity or shearband induced plasticity is produced, to give increase in rigidity of at least 30 percent |
| US20090010793A1 (en) * | 2004-11-03 | 2009-01-08 | Thyssenkrupp Steel Ag | Method For Producing High Strength Steel Strips or Sheets With Twip Properties, Method For Producing a Component and High-Strength Steel Strip or Sheet |
| FR2878257B1 (en) * | 2004-11-24 | 2007-01-12 | Usinor Sa | PROCESS FOR MANUFACTURING AUSTENITIC STEEL SHEET, FER-CARBON-MANGANIZED WITH VERY HIGH RESISTANCE AND ELONGATION CHARACTERISTICS, AND EXCELLENT HOMOGENEITY |
| DE102005052774A1 (en) * | 2004-12-21 | 2006-06-29 | Salzgitter Flachstahl Gmbh | Method of producing hot strips of lightweight steel |
| DE102005010243A1 (en) * | 2005-03-05 | 2006-09-07 | Sms Demag Ag | Method and plant for producing a lightweight steel with a high manganese content |
| JP4555183B2 (en) * | 2005-07-15 | 2010-09-29 | 株式会社神戸製鋼所 | Manufacturing method of forming aluminum alloy sheet and continuous casting apparatus for forming aluminum alloy |
| DE102007059006A1 (en) | 2007-12-06 | 2009-06-10 | Salzgitter Flachstahl Gmbh | Production of hot strip from transition-free ferritic steel comprises casting melt in horizontal strip casting unit to produce semi-finished strip of specified thickness which is then rolled with specified degree of deformation |
| DE102007059007A1 (en) | 2007-12-06 | 2009-06-18 | Salzgitter Flachstahl Gmbh | Producing hot-rolled strip from triplex structural steel for automobile industry, by casting melt in horizontal strip casting plant, free of bends and with killed-flow to form pre-strip and then rolling with deformation grade to give strip |
| DE102008005158A1 (en) | 2008-01-18 | 2009-07-23 | Robert Bosch Gmbh | Automotive fuel injection component for diesel or petrol engine is machined from austenitic steel having transformation induced plasticity |
| KR101563606B1 (en) | 2009-03-11 | 2015-10-27 | 잘쯔기터 플래시슈탈 게엠베하 | Method for producing a hot rolled strip and hot rolled strip produced from ferritic steel |
| DE102009030324A1 (en) * | 2009-06-24 | 2011-01-05 | Voestalpine Stahl Gmbh | Manganese steel and process for producing the same |
| WO2012171530A1 (en) * | 2011-06-17 | 2012-12-20 | National Oilwell Varco Denmark I/S | An unbonded flexible pipe |
| EP3019292B1 (en) * | 2013-07-10 | 2019-02-27 | ThyssenKrupp Steel Europe AG | Method for producing a flat product from an iron-based shape memory alloy |
| CN106734203A (en) * | 2016-12-30 | 2017-05-31 | 宁波大学 | A kind of continuous casting-cross wedge rolling forming method without material head double-metal layer composite hollow axle |
| CN106583454A (en) * | 2016-12-30 | 2017-04-26 | 宁波大学 | Continuous casting-cross wedge rolling moulding method for stud bar-free double-metal layer composite solid shafts |
| CN108655354B (en) * | 2018-06-07 | 2019-12-27 | 东北大学 | Short-process preparation method of high-strength-ductility medium manganese steel thin strip |
| CN110899644A (en) * | 2018-09-14 | 2020-03-24 | 宝山钢铁股份有限公司 | Production method of ultrathin hot rolled strip steel |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4331474A (en) * | 1980-09-24 | 1982-05-25 | Armco Inc. | Ferritic stainless steel having toughness and weldability |
| CS221733B1 (en) * | 1981-12-23 | 1983-04-29 | Vladimir Cihal | Austhenitic mangan-chrome steel resistant against the corrosion cracking |
| JPS58144418A (en) * | 1982-02-22 | 1983-08-27 | Nippon Steel Corp | Manufacture of high-mn steel |
| DE3440752A1 (en) * | 1984-11-08 | 1986-05-22 | Thyssen Stahl AG, 4100 Duisburg | METHOD FOR PRODUCING HOT TAPE WITH A TWO-PHASE TEXTURE |
| CA2100656C (en) * | 1991-12-30 | 2000-02-22 | Tai Woung Kim | Austenitic high manganese steel having superior formability, strengths and weldability, and manufacturing process therefor |
| JPH06322440A (en) * | 1993-05-12 | 1994-11-22 | Nippon Steel Corp | Method for rolling high manganese nonmagnetic steel slab |
| CZ283449B6 (en) * | 1993-06-10 | 1998-04-15 | Přerovské Strojírny, A.S. | High-alloy abrasion-resistant manganese steel |
| KR970001324B1 (en) * | 1994-03-25 | 1997-02-05 | 김만제 | Hot rolling method of high mn steel |
| GB2287956B (en) * | 1994-03-31 | 1998-02-04 | Daewoo Heavy Ind Co Ltd | Thermal refiningless hot-rolled steel and method of making same |
| DE19724051C1 (en) * | 1997-06-07 | 1999-03-11 | Thyssen Stahl Ag | Heavy plates up to 50 mm thick made of fire-resistant nickel-free steels for steel construction and process for the production of heavy plates from them |
| IT1291931B1 (en) * | 1997-06-19 | 1999-01-21 | Voest Alpine Ind Anlagen | PROCEDURE FOR THE PRODUCTION OF RAW STEEL CASTING TAPES WITH LOW CARBON CONTENT AND THIS OBTAINABLE TAPES |
| DE19727759C2 (en) * | 1997-07-01 | 2000-05-18 | Max Planck Inst Eisenforschung | Use of a lightweight steel |
| DE19900199A1 (en) * | 1999-01-06 | 2000-07-13 | Ralf Uebachs | High strength light constructional steel for pre-stressed concrete reinforcements or automobile body components has high manganese and aluminum contents |
| FR2796083B1 (en) * | 1999-07-07 | 2001-08-31 | Usinor | PROCESS FOR MANUFACTURING IRON-CARBON-MANGANESE ALLOY STRIPS, AND STRIPS THUS PRODUCED |
-
2000
- 2000-12-06 DE DE10060948A patent/DE10060948C2/en not_active Expired - Fee Related
-
2001
- 2001-12-06 US US10/433,729 patent/US20040074628A1/en not_active Abandoned
- 2001-12-06 DE DE50102363T patent/DE50102363D1/en not_active Expired - Lifetime
- 2001-12-06 WO PCT/EP2001/014306 patent/WO2002046480A1/en active IP Right Grant
- 2001-12-06 CZ CZ2003-1558A patent/CZ304928B6/en not_active IP Right Cessation
- 2001-12-06 CN CN01816434.XA patent/CN1236076C/en not_active Expired - Fee Related
- 2001-12-06 PL PL362508A patent/PL196538B1/en unknown
- 2001-12-06 JP JP2002548196A patent/JP3836793B2/en not_active Expired - Fee Related
- 2001-12-06 EP EP01991793A patent/EP1341937B1/en not_active Expired - Lifetime
- 2001-12-06 AU AU2002231664A patent/AU2002231664A1/en not_active Abandoned
- 2001-12-06 ES ES01991793T patent/ES2221659T3/en not_active Expired - Lifetime
- 2001-12-06 AT AT01991793T patent/ATE267269T1/en active
-
2007
- 2007-04-27 US US11/796,245 patent/US20070199631A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| DE10060948A1 (en) | 2002-06-27 |
| JP2004515362A (en) | 2004-05-27 |
| US20070199631A1 (en) | 2007-08-30 |
| EP1341937A1 (en) | 2003-09-10 |
| EP1341937B1 (en) | 2004-05-19 |
| DE10060948C2 (en) | 2003-07-31 |
| AU2002231664A1 (en) | 2002-06-18 |
| CZ20031558A3 (en) | 2004-02-18 |
| ATE267269T1 (en) | 2004-06-15 |
| PL362508A1 (en) | 2004-11-02 |
| JP3836793B2 (en) | 2006-10-25 |
| CN1236076C (en) | 2006-01-11 |
| PL196538B1 (en) | 2008-01-31 |
| CZ304928B6 (en) | 2015-01-28 |
| DE50102363D1 (en) | 2004-06-24 |
| WO2002046480A1 (en) | 2002-06-13 |
| CN1466633A (en) | 2004-01-07 |
| US20040074628A1 (en) | 2004-04-22 |
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