Method for improving wide section tundish changing success rate of plate blank and manufacturing method of method

A technology of success rate and cross-section, which is applied in the field of steel smelting, can solve the problems of low success rate of tundish replacement, achieve the effects of improving the success rate of tundish replacement, reducing the shrinkage of billet shell, and being easy to control

Active Publication Date: 2021-08-06
WUHAN IRON & STEEL GRP ECHENG IRON & STEEL CO LTD
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Problems solved by technology

[0003] The purpose of the present invention is to propose a manufacturing method for improving the success rate of tundish replacement for wide-section slabs, and solve the problem of low success rate of tundish replacement caused by the above-mentioned problems existing in the existing tundish replacement

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  • Method for improving wide section tundish changing success rate of plate blank and manufacturing method of method
  • Method for improving wide section tundish changing success rate of plate blank and manufacturing method of method
  • Method for improving wide section tundish changing success rate of plate blank and manufacturing method of method

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[0029] It should be noted that, as used herein, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or system comprising a set of elements includes not only those elements, It also includes other elements not expressly listed, or elements inherent in the process, method, article, or system. Without further limitations, an element defined by the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, article or system comprising that element.

[0030] The serial numbers of the following embodiments of the present invention are only for description, and do not represent the advantages and disadvantages of the embodiments.

[0031] In this document, the use of the words first, second, and third etc. does not indicate any order. These words can be interpreted as names.

[0032] It should be understood that the specific embodime...

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Abstract

The invention discloses a method for improving the wide section tundish changing success rate of a plate blank. The method comprises the following steps that when the tonnage of an old tundish is reduced to a preset low tonnage, a new tundish is started to be checked; after pouring of the previous furnace of steel is finished, the old tundish is separated a tundish area, and before the new tundish is opened to the pouring position, the liquid level of a crystallizer is kept at the high liquid level; when the old tundish is separated from the tundish area and before the new tundish is opened to the pouring position, a U-shaped supporting piece is placed into the crystallizer; and when the new tundish is opened to the position close to the centering position of the crystallizer, a new tundish vehicle is controlled to rotate to walk at a low speed, and when the new tundish rotates to the pouring position, the tundish falls to be poured. According to the technical scheme, by controlling the tundish changing process, the tundish changing time is shortened, the blank shell shrinkage degree is reduced, and the wide section tundish changing success rate of a slab casting machine is improved.

Description

technical field [0001] The invention relates to the technical field of steel smelting, in particular to a manufacturing method for improving the success rate of slab wide-section repacking. Background technique [0002] With the development of the country's economic construction, large bridges are developing rapidly in the direction of large spans and heavy loads. The rapid replacement technology of steel tundish can effectively improve the operation rate and production capacity of continuous casting machines, and at the same time reduce production costs. Therefore, in continuous casting production be widely used. However, there are certain risks in the application of this technology in the slab continuous casting machine. Often, due to the improper control of the operation of the quick-change tundish, serious accidents such as slab breakout or even stagnation are caused, resulting in serious consequences. In particular, accidents with a wide section of 2000mm and above are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/18B22D11/16
CPCB22D11/181B22D11/168
Inventor 金海兵严敏汪志刚秦自权王勇
Owner WUHAN IRON & STEEL GRP ECHENG IRON & STEEL CO LTD
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