Abstract:
Die Erfindung betrifft ein Verfahren zum Herstellen eines Metallbandes (1 ) durch Gießwalzen, bei dem zunächst in einer Gießmaschine (2) eine Dünnbramme (3) gegossen wird, wobei diese anschließend in mindestens einer Walzstraße (4, 5) unter Nutzung der Primärhitze des Gießvorgangs gewalzt wird. Zur Verbesserung der Funktionalität der Gießwalzanlage ist erfindungsgemäß vorgesehen, dass die gegossene Dünnbramme (3) zwischen der Gießmaschine (2) und der mindestens einen Walzstraße (4, 5) sowohl mindestens einen Halteofen (6) als auch mindestens einen Induktionsofen (7) passiert, wobei der Halteofen (6) und der Induktionsofen (7) in Abhängigkeit einer gewählten Betriebsart, nämlich einer ersten Betriebsart der kontinuierlichen Herstellung des Metallbandes (1 ) und einer zweiten Betriebsart der diskontinuierlichen Herstellung des Metallbandes (1 ), aktiviert oder deaktiviert wird. Des weiteren betrifft die Erfindung eine Vorrichtung zum Herstellen eines Metallbandes durch Gießwalzen.
Abstract:
An endless hot rolling method capable of preventing a plate from breaking by assuring a connection strength and reducing a load on rolling rolls so as to prevent a damage to a retainer and the rolling rolls in an endless rolling, comprising the step of standardizing the thickness of all sheet bars in a set to the thickness of a thinnest sheet bar of all sheet bars with the specified thicknesses in a connected set when a finish rolling is continuously performed by connecting the sheet bars before a finish rolling to eliminate a step at a sheet bar connected portion.
Abstract:
The present invention provides continuous casting-milling equipment and method capable of switching between continuous and batch milling, which increase the process yield rate by reducing the portion which is unavoidably processed as scrap, when switching casting or at an initial stage. The continuous casting-milling equipment comprises: a casting unit; at least two rolling units; and a coil box arranged between the rolling units. The continuous casting-milling method comprises: a casting step for producing a slab; a first rolling step which reduces the thickness of the slab; a cutting step of cutting a predetermined distance from a front end portion of the slab at the initial stage of casting; a passing step of passing the continuously supplied slab through the coil box; and a second rolling step which reduces the thickness of the passed slab.
Abstract:
Rolling method in a rolling line (10), to produce strip with a thickness varying from 0.7 mm to 20 mm, for all qualities of steel which can be cast in the form of thin slabs with a thickness comprised from 30 mm to 140 mm, the line (10) comprising at least: a continuous casting device (11); a tunnel furnace (15) for maintenance/equalization and possible heating; a rolling train consisting of a roughing train comprising from 1 to 4 rolling stands (18a, 18b, 18c) and a finishing train comprising from 3 to 7 stands (21a-21e); a rapid heating unit (20), with elements able to be selectively activated, interposed between the roughing train and the finishing train. For each lay-out of the rolling line (10), the position of the rapid heating unit (20) which defines the number of stands (18a, 18b, 18c) which form the roughing train, disposed upstream of the unit (20), and the number of stands (21a-21e) which form the finishing train, disposed downstream of the unit (20), is calculated as a function of the product of the thickness and speed of the thin slab. The product is in turn a function of the hourly productivity in tons/hour desired to be obtained, and is made to work either in coil-to-coil mode, or in semi-endless mode or in endless mode. One of the three modes of the rolling process is selected according to the quality of the steel produced, to the maximum casting speed possible for the quality of steel, to the final thickness of the strip and to the production cost.
Abstract:
The invention relates to a method for producing a metal strip (1) by continuous casting and rolling. According to said method, a thin slab (3) is initially cast into a casting machine (2), which is subsequently rolled in at least one rolling train (4, 5) using primary heat from the casting cycle. According to the invention, in order to improve the functionality of the continuous casting and rolling installation, the cast thin slab (3) is passed between the casting machine (2) and the at least one rolling train (4, 5) and at least one holding oven (6) as well as at least one induction oven (7). The holding oven (6) and the induction oven (7) are activated or deactivated according to a selected mode of operation, that is, a first mode of operation for the continuous production of the metal strip (1) and a second mode of operation for the discontinuous production of the metal strip (1). The invention further relates to a device for producing a metal strip by continuous casting and rolling.
Abstract:
An endless hot rolling method capable of preventing a plate from breaking by assuring a connection strength and reducing a load on rolling rolls so as to prevent a damage to a retainer and the rolling rolls in an endless rolling, comprising the step of standardizing the thickness of all sheet bars in a set to the thickness of a thinnest sheet bar of all sheet bars with the specified thicknesses in a connected set when a finish rolling is continuously performed by connecting the sheet bars before a finish rolling to eliminate a step at a sheet bar connected portion.
Abstract:
본 발명은 먼저 주조기(2)에서 박 슬래브(3)를 주조하고, 이어서 하나 이상의 압연 트레인(4, 5)에서 박 슬래브를 주조 과정의 1차 열을 이용하여 압연하는, 연속 주조 및 압연에 의해 금속 스트립(1)을 제조하는 방법에 관한 것이다. 연속 주조 및 압연 시스템의 기능성을 개선하기 위해, 본 발명에 따라 주조된 박 슬래브(3)를 주조기(2)와 하나 이상의 압연 트레인(4, 5) 사이에서 하나 이상의 보온로(6)뿐만 아니라 하나 이상의 유도로(7)를 통해 통과시키고, 보온로(6)와 유도로(7)를 선택된 작업 모드, 즉 금속 스트립(1)을 연속적으로 제조하는 제1 작업 모드와, 금속 스트립(1)을 불연속적으로 제조하는 제2 작업 모드에 의존하여 활성화 또는 비활성화하는 조치가 취해진다. 또한, 본 발명은 연속 주조 및 압연에 의해금속 스트립을 제조하는 장치에 관한 것이기도 하다. 연속 주조 및 압연 시스템, 박 슬래브, 금속 스트립, 주조기, 압연 트레인, 보온로, 유도로, 작업 모드