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Method and device for producing steel strips by means of belt casting

A technology for casting production and steel strip, applied in the field of the device according to claim 10, can solve the problems of uneven supply of liquid steel, casting defects, reducing the cross section of molten outflow, etc., and achieve the effect of improving efficiency and quality.

Active Publication Date: 2012-06-13
SMS DEMAG AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] A disadvantage in such strip casting plants is that during operation, sintering can occur in the region of the outflow side of the casting nozzle, which further reduces the outflow cross section for the melt
As a result, an inhomogeneous supply of liquid steel to the strip and thus casting defects

Method used

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  • Method and device for producing steel strips by means of belt casting
  • Method and device for producing steel strips by means of belt casting
  • Method and device for producing steel strips by means of belt casting

Examples

Experimental program
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Embodiment Construction

[0030] exist figure 1 shows a schematic representation of the region of the casting nozzle of the strip casting device according to the invention in plan view.

[0031] The molten metal 7 runs from left to right in the illustration and is identified by an arrow.

[0032] In the area where the metal melt 7 flows out of the casting nozzles, the argon grid and the plasma burner 9 ( figure 2 ) constitute the structural unit 4 made of copper according to the invention.

[0033] The plasma burner 9 is arranged such that its plasma beam 5 completely inerts the outflow region of the metal melt from the casting nozzle and the melt surface and controls the temperature of the melt.

[0034] For uniform distribution of the melt on the casting belt 3 , the nozzles 6 of the argon grid are aimed obliquely downward at the molten metal 7 .

[0035] exist figure 2 In the casting nozzle area in the figure 1 A side view of section A-A is shown. The upper part 8 and the lower part 8 ′ of t...

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Abstract

The invention relates to a method and a device for producing steel strips by means of belt casting, wherein a molten metal is output from a feed vessel onto a circulating casting belt of a horizontal belt casting system under protective gas by means of a gutter and a siphon-like outlet area designed as a casting nozzle. According to the method, at least one plasma jet, which renders the area of action inert and heats the area of action, influences the outlet-side area of the casting nozzle and the molten metal exiting therefrom at least during the casting process. For this purpose, at least one plasma torch, which produces a plasma jet and is directed at the outlet area of the casting nozzle in a direction opposite the casting direction, is provided according to the device.

Description

technical field [0001] The invention relates to a method according to the preamble of claim 1 for the production of steel strip by means of strip casting and a device according to claim 10 . Background technique [0002] A method according to this type for producing steel strip by means of strip casting is known (steel research 74 (2003), No. 11 / 12, pages 724-731). In particular, this production method, known as the DSC method, is suitable for producing hot-rolled strip from lightweight structural steel. [0003] In the known method, the melt is discharged from a filling container via a casting trough and an outflow region configured as a siphon-like casting nozzle onto a horizontal, surrounding casting belt with a casting device. As a result of the intensive cooling of the cast strip, the discharged melt solidifies into a crude strip with a thickness in the range between 6 and 20 mm. After solidification, the crude strip is subjected to a hot rolling process. [0004] Fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/06B22D11/106B22D11/117B22D27/00B22D41/60
CPCC22C38/14B23K35/3073C21D8/0215B23K35/3053B22D11/0631C22C38/58B22D11/0697B22D11/06
Inventor H·艾希霍尔茨J·万斯K-H·斯皮策H-J·黑肯
Owner SMS DEMAG AG