Non-preheat composite structure long nozzle liner material

A composite structure, preheat-free technology, used in casting melt containers, manufacturing tools, metal processing equipment, etc., can solve problems such as difficult control and cumbersome process.

Inactive Publication Date: 2014-01-01
LUOYANG INST OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the effect of this method is better, its technological proc

Method used

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  • Non-preheat composite structure long nozzle liner material

Examples

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Effect test

Embodiment 1

[0026] The ingredients of a composite structure long nozzle lining material are 20wt% fused white corundum; 38wt% fused zirconia mullite; 24wt% fused silica; 12wt% light-burned alumina; 6wt% zinc oxide; the binder is phenolic resin , and its addition is 8% of the total weight of the lining material.

Embodiment 2

[0028] The ingredients of a long nozzle lining material with a composite structure are 20wt% fused white corundum; 37wt% fused zirconia mullite; 24wt% fused silica; 11wt% lightly burned alumina; 8wt% zinc oxide; the binder is phenolic resin , and its addition is 8% of the total weight of the lining material.

Embodiment 3

[0030] The ingredients of a long nozzle lining material with a composite structure are 20wt% fused white corundum; 35wt% fused zirconia mullite; 24wt% fused silica; 11wt% lightly burned alumina; 10wt% zinc oxide; the binder is phenolic resin , and its addition is 8% of the total weight of the lining material.

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Abstract

Disclosed si a non-preheat composite structure long nozzle liner material, and relates to the field of functional refractories for continuous steel casting. The ingredients include 20-50wt% of corundum, 10-50wt% of electric-melted zirconia mullite, 15-40wt% of fused silica, 5-20wt% of light burned alumina and 5-15wt% of zinc oxide, and 5-10% of phenolic resin of the total weight of the liner material is added as a binder. The liner material has high porosity, low thermal expansion coefficient and thermal conductivity, and is capable of resisting scour and erosion of molten steel well.

Description

technical field [0001] The invention relates to the field of functional refractory materials for continuous steel casting, in particular to a shroud lining material with a preheating-free composite structure that guides liquid steel from a ladle into a tundish. Background technique [0002] The long nozzle is installed under the ladle, and the molten steel is poured into A1 of the tundish from the ladle 2 o 3 - C-quality cylindrical channel, which plays the role of guiding flow and preventing secondary oxidation and splashing of molten steel. It is an important functional refractory material to realize the protective casting of molten steel to improve the quality of billets, and its use will directly affect whether the entire continuous casting process can be carried out normally. However, in the early stage of molten steel pouring, when the hot molten steel flows through the long nozzle, a large thermal stress will be generated inside it, which will cause it to crack. Th...

Claims

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Application Information

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IPC IPC(8): B22D41/54C04B35/66
Inventor 刘辉敏郭献军李建伟钱跃进赵营刚
Owner LUOYANG INST OF SCI & TECH
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