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Submersed nozzle slag line adjusting method

An adjustment method and immersion technology, which can be used in casting molten material containers, metal processing equipment, casting equipment, etc., can solve problems such as steel breakout, achieve the effects of ensuring stability, excellent flow field stability, and reducing liquid level fluctuations

Active Publication Date: 2019-11-15
PANGANG GRP XICHANG STEEL & VANADIUM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the object of the present invention is to provide a method for adjusting the slag line of the submerged nozzle, which can effectively solve the problem of steel breakout after the opening of a new tundish or replacement of the submerged nozzle

Method used

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Embodiment Construction

[0020] The embodiment of the invention discloses a submerged nozzle slag line adjustment method to reduce the risk of steel breakout and reduce the number of steel breakouts.

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] see figure 1 , figure 1 It is a schematic flowchart of a submerged nozzle slag line adjustment method according to a specific embodiment of the present invention.

[0023] In a specific embodiment, the submerged nozzle slag line adjustment method provided by the present inventi...

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Abstract

The invention discloses a submersed nozzle slag line adjusting method. The method includes the steps that after casting of a new tundish begins or a submersed nozzle is replaced, the liquid level of acrystallizer is set to be the preset liquid level, the preset liquid level is in the range of the range-adjustable middle line up-down floating preset values corresponding to the liquid, and the immersion depth of the submersed nozzle is set to be the initial depth; and the immersion depth of the submersed nozzle is upwards or downwards adjusted by a first preset height every other preset heats from the second heat, and when the immersion depth of the submersed nozzle reaches the corresponding extreme value in the direction, the immersion depth of the submersed nozzle is reversely adjusted bya second preset height every other preset heats. By the application of the submersed nozzle slag line adjusting method, due to the fact that stability of a flow field in the crystallizer is good, thephenomenon that protective slag cannot flow in normally due to unstable casting can be avoided, and therefore steel leaking can be avoided. Meanwhile, crystallizer liquid level fluctuation caused bymanual work can be reduced, and the risk of causing the steel leaking problem is further lowered.

Description

technical field [0001] The invention relates to the technical field of continuous casting technology, and more specifically, relates to a submerged nozzle slag line adjustment method. Background technique [0002] Stable mold liquid level control is an effective means to ensure the normal production of the continuous casting machine, improve the continuous casting production and improve the quality of the slab. Fluctuation of the liquid level will lead to poor melting of the mold powder and a large amount of inclusions, which not only affects the quality of the slab, but may even lead to steel overflow and breakout accidents during the pouring process. [0003] When the new tundish is poured or the submerged nozzle is replaced during continuous casting, the pourer usually sets the mold liquid level at the lowest position (eg -120mm), and then casts two heats of steel and adjusts it up by 10mm. Since the opening of the new tundish and the replacement of the submerged nozzle ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D41/56
CPCB22D41/56
Inventor 黄基红关建超
Owner PANGANG GRP XICHANG STEEL & VANADIUM CO LTD
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