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Mold flux and casting method using same

A technology of mold flux and crystallizer, which is applied in the field of mold flux and castings using it, can solve the problems of reduced production and large component changes, and achieves increased production, suppressed component changes, The effect of maintaining lubricating performance

Active Publication Date: 2021-04-09
浦项股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] However, there is a problem that the throughput decreases when the continuous throughput and casting speed of the slab are limited
In addition, in the case of electrical steel, in order to ensure low core loss and high magnetic field density, a higher aluminum (Al) content is required, but the higher the aluminum (Al) content in the molten steel, the more components in the mold powder The greater the degree of change in the problem

Method used

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  • Mold flux and casting method using same
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  • Mold flux and casting method using same

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Embodiment Construction

[0033] Hereinafter, exemplary embodiments will be described in detail with reference to the accompanying drawings. This invention may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. The drawings may be exaggerated for describing exemplary embodiments, and like reference numerals denote like elements throughout.

[0034] figure 1 is a diagram showing a state in which mold flux is introduced during a casting process.

[0035] refer to figure 1 , the casting process is a process in which when molten steel M received in a tundish (not shown) is introduced into the mold 20 through the submerged nozzle 10, the molten steel M begins to solidify in the cooled mold 20, and A slab in a semi-solidified state is obtained as an intermediate product....

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Abstract

The present invention relates to mold flux used in slab casting, comprising, with respect to the total weight%, 32 wt% to 38 wt% of aluminum oxide (Al2O3), 8 wt% to 12 wt% of strontium oxide (SrO), 8 wt% to 12 wt% of potassium oxide (K2O), 8 wt% to 12 wt% of fluorine (F), 5 wt% to 8 wt% of boron oxide (B2O3), 3 wt% to 5 wt% of lithium oxide (Li2O), and unavoidable impurities. Therefore, mold flux, according to an embodiment of the present invention, can better suppress or prevent component changes caused by silicon oxide (SiO2) and calcium oxide (CaO) compared to the prior art.

Description

technical field [0001] The present invention relates to a mold flux and a casting method using the same, and more particularly, to a mold flux capable of improving the quality and productivity of a slab and a casting method using the same. Background technique [0002] The casting process is a process in which molten steel is charged into a mold having an inner space of a predetermined shape, semi-solidified slabs are continuously pulled out, and slabs having various shapes such as slabs, blooms ), billet and beam blank. [0003] During such a casting process, mold flux is added to the upper portion of molten steel inside the mold, and the added mold flux is introduced into the gap between the mold and the solidification shell. The introduced mold powder acts on the lubrication between the inner wall of the mold and the solidified shell or slab. In addition, in addition to the lubricating effect, the mold powder also absorbs and melts the non-metallic inclusions separated ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D11/111
CPCB22D11/111B22D11/07B22D11/108C21C7/076C22B9/10
Inventor 朴埈用丁太仁金成演
Owner 浦项股份有限公司
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