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Method for the continuous casting of a metal strand

A technology for casting metal and continuous casting slabs, which is applied in the field of continuous casting metal continuous casting slabs, can solve the problems of reducing the quality of metal continuous casting slabs, and achieve the effect of high accuracy and high product quality

Active Publication Date: 2011-08-10
PRIMETALS TECH AUSTRIA GMBH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Changes in the operating parameters of the continuous casting plant (such as changes in casting speed or slab cooling) that occur during the continuous casting process are still ignored relative to the distance between the slab guide rollers of the slab support device, resulting in reduced metal continuous casting. billet quality

Method used

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  • Method for the continuous casting of a metal strand
  • Method for the continuous casting of a metal strand
  • Method for the continuous casting of a metal strand

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Embodiment Construction

[0022] The continuously cast steel slab 1 is formed by casting molten steel 2 with a specific chemical composition in a cooled straight-through mold 3 . The molten steel 2 is injected into the straight-through mold 3 from a ladle 4 through an intermediate container 5 and a casting tube 6 extending from the intermediate container 5 below the level of the casting liquid formed in the straight-through mold 3 . The continuous casting slab guide roller 7 of the continuous casting slab support device is arranged below the straight-through mold 3, and is used to support the steel continuous casting slab 1. This steel continuous casting slab 1 has a core 8 that is still in a fluid state. It also has a very thin continuous cast slab shell 9. The steel continuous casting slab 1 coming out of the straight-through mold with a straight axis turns into the arc track 11 in the bending zone 10, and is supported by the continuous casting slab guide roller 7, and the continuous casting slab gui...

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Abstract

The invention relates to a method for the continuous casting of a metal strand in a continuous casting plant, a strand being withdrawn from an in-line die, supported in a strand support unit, cooled by a coolant and optionally metallurgically reduced, thermodynamic changes in the entire strand being calculated in a mathematical model containing a thermal conduction equation. The aim of the invention is to provide a method which can be used to improve the product quality of a metal strand, for example by reducing the porosity and / or liquation and by improving the surface quality and form stability. Said aim is achieved by a method, according to which the natural shrinkage of the strand is calculated in real time in the mathematical simulation model, taking into consideration the physical parameters of the metal, the temperature in the casting distributor, the frequently measured withdrawal speed, the cooling of the strand and the thickness of the strand and strand guide rollers of the strand support unit, said rollers being placed against the strand, are set by taking into consideration the natural shrinkage of the metal strand.

Description

technical field [0001] The invention relates to a method for the continuous casting of metal slabs in a continuous casting plant. [0002] In particular, the present invention relates to a method for the continuous casting of metal slabs, especially steel slabs, in a continuous casting plant, wherein the slab has a fluid core surrounded by a slab shell Pulled out of the cooled straight-through mold, supported on the continuous casting strand support device connected to the rear of the straight-through mold, cooled by means of a coolant, and metallurgically thinned if necessary, including heat conduction The thermodynamic state changes of the entire continuous casting slab are jointly calculated in the mathematical simulation model of the equations. Background technique [0003] A method for the continuous casting of metal strands is known from DE 4417808 A1, in which the strand with a fluid core surrounded by a strand shell is drawn from a cooled mold and then supported On...

Claims

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Application Information

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IPC IPC(8): B22D11/12B22D11/20
CPCB22D11/20B22D11/1206
Inventor K·迪滕伯格U·费施尔K·豪瑟W·基布勒P·彭纳斯托尔弗H·瓦尔
Owner PRIMETALS TECH AUSTRIA GMBH
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