Nano mold flux for continuous casting crystallizer and preparation method thereof

A technology for continuous casting mold and mold flux, which is applied in the field of continuous casting mold nano-mold flux and its preparation, can solve the problems that the mold flux is difficult to meet the requirements, and achieve the advantages of large-scale production and industrial application, good sphericity, The effect of simple preparation method

Active Publication Date: 2021-04-06
CISDI ENG CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In these cases, in terms of heat transfer performance and lubricating performance, the current mold flux is generally difficult to meet the requirements

Method used

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  • Nano mold flux for continuous casting crystallizer and preparation method thereof
  • Nano mold flux for continuous casting crystallizer and preparation method thereof
  • Nano mold flux for continuous casting crystallizer and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0033] A kind of continuous casting crystallizer nano mold powder is prepared, and its preparation method comprises the following steps:

[0034] (1) Select spherical nano-silicon carbide ceramic particles with intrinsic thermal conductivity of 100w / mk, particle size of 100nm, self-friction coefficient of 0.3, and self-lubricating properties, and disperse them by mechanical stirring for 3 hours to form dispersed spherical nano-silicon carbide ceramics granular system;

[0035] (2) The dispersed spherical nano-silicon carbide ceramic particle system obtained in 1ml step (1) is added to 1000ml with SiO 2 -CaO-Al 2 o 3 In the solid mold flux based on the powder, the volume ratio of nano-silicon carbide ceramic particles in the mold flux is 0.1%, and then high-energy ball milling at a speed of 100rpm is carried out. The ball milling time is 30min. After the ball milling, a continuous casting can be obtained. Crystallizer nano powder.

[0036] In addition, the chemical dispersa...

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Abstract

The invention discloses a continuous casting crystallizer nano mold flux and a preparation method thereof. The mold flux is doped with spherical nanoparticles with a volume ratio of 0.1 to 50%. The spherical nanoparticles have high thermal conductivity and good sphericity. , suitable particle size and other advantages, uniform and stable nanofluid can be formed in liquid mold flux, and nanoparticles with sufficiently high interfacial energy and sufficiently low van der Waals action potential in solid mold flux can make nanoparticles The liquid mold flux can maintain a uniform distribution without obvious agglomeration phenomenon, so after adding the mold flux, it forms a continuous casting crystallizer nano-molten flux, which has excellent heat transfer performance and lubricating performance, and can improve the surface and interior of the slab. Quality, suitable for the production of products with special specifications (such as extra-thick plates) and products with special continuous casting processes (such as ultra-high casting speed).

Description

technical field [0001] The invention belongs to the field of iron and steel metallurgy continuous casting mold slag, and in particular relates to a continuous casting crystallizer nano mold slag and a preparation method thereof. Background technique [0002] Continuous casting mold slag has a great influence on the surface and subcutaneous quality of the billet and the stability of the continuous casting process to ensure its forward movement. It is a key technology in the continuous casting process, especially for the solidification preparation of high-end steel grades or key metal materials produced by continuous casting Particularly important. In the continuous casting process, the mold flux mainly plays the role of controlling the solidification heat transfer and surface lubrication between the slag film and the slab. The metallurgical effect of these two aspects is directly related to the continuous casting process and the quality of the slab. For the continuous castin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/111
CPCB22D11/111
Inventor 徐诗鑫朱科冯科
Owner CISDI ENG CO LTD
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