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Zirconium oxide ceramic composite material for continuous casting water gap and preparation method thereof

A technology of zirconia ceramics and composite materials, used in foundry equipment, manufacturing tools, metal processing equipment, etc., can solve problems such as affecting the service life of products, large expansion of products, lack of stabilizers, etc., to extend service life and strengthen weak parts. , the effect of excellent corrosion resistance

Inactive Publication Date: 2012-12-19
山东银山耐火材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with the long nozzle is that its neck is easy to break due to long-term vibration during use, and its corrosion resistance is also poor; the material of the domestic submerged nozzle is similar to that of the long nozzle, except for the existing ordinary submerged nozzle. In addition, there are currently aluminum-carbon submerged nozzles with composite zirconium carbon layers, fused silica submerged nozzles with composite zirconium, and blown-type submerged nozzles with slits.
[0004] The weak point of this invention: this invention utilizes ZrO 2 The phase transition produces microcracks to produce thermal shock resistance, but the lack of effective stabilizers often leads to excessive expansion of the product, leading to early cracking of the product and affecting the service life of the product

Method used

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Examples

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Comparison scheme
Effect test

Embodiment 1

[0020] The zirconia ceramic composite material for the continuous casting nozzle of the present invention is made of the following raw materials in weight ratio:

[0021] Calcined alumina 60 parts; partial calcium oxide stabilized fused zirconia 20 parts; aluminum titanate 5 parts; additive 5 parts; liquid aluminum dihydrogen phosphate binder 4 parts.

[0022] The additives are metal silicon powder, metal zirconium powder, metal aluminum powder, boron carbide powder, titanium carbide powder, niobium carbide powder, tantalum carbide powder, molybdenum carbide powder and boron nitride powder.

[0023] The step of preparing the zirconia ceramic composite material for the continuous casting nozzle of the present invention comprises:

[0024] (1) Preparation of partially calcium oxide-stabilized fused zirconia-aluminum titanate composites. Partial calcium oxide stabilized fused zirconia and aluminum titanate were mixed and ball milled in an ethanol solution for not less than 10 ho...

Embodiment 2

[0029] The zirconia ceramic composite material for the continuous casting nozzle of the present invention is made of the following raw materials in weight ratio:

[0030] 65 parts of calcined alumina; 24 parts of partially calcia-stabilized fused zirconia; 8 parts of aluminum titanate; 9 parts of additives; 6 parts of liquid aluminum dihydrogen phosphate binder.

[0031] The additives are metal silicon powder, metal zirconium powder, metal aluminum powder, boron carbide powder, titanium carbide powder, niobium carbide powder, tantalum carbide powder, molybdenum carbide powder and boron nitride powder.

[0032] The step of preparing the zirconia ceramic composite material for the continuous casting nozzle of the present invention comprises:

[0033] (1) Preparation of partially calcium oxide-stabilized fused zirconia and aluminum titanate composites. Partial calcium oxide stabilized fused zirconia and aluminum titanate were mixed and ball milled in an ethanol solution for not ...

Embodiment 3

[0038] The zirconia ceramic composite material for the continuous casting nozzle of the present invention is made of the following raw materials in weight ratio:

[0039] 65 parts of calcined alumina; 20 parts of partially calcia-stabilized fused zirconia; 5 parts of aluminum titanate; 5 parts of additives; 4 parts of liquid aluminum dihydrogen phosphate binder.

[0040] The preparation method of this embodiment is the same as the steps of the preparation method of the previous embodiment.

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PUM

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Abstract

The invention discloses a zirconium oxide ceramic composite material for a continuous casting water gap. The composite material is prepared from the following raw materials in part by weight: 60 to 65 parts of calcined aluminum oxide, 20 to 24 parts of partial calcium oxide stabilized electric smelting zirconium dioxide, 5 to 8 parts of aluminum titanate, 5 to 9 parts of additive and 4 to 6 partsof bonding agent. The invention also provides a method for preparing the zirconium oxide ceramic composite material for the continuous casting water gap. The composite material has the advantages of thermal shock resistance, good erosion resistance and long service life.

Description

technical field [0001] The invention relates to a refractory material for a continuous casting nozzle, in particular to a zirconia ceramic composite material for a continuous casting nozzle. The invention also provides a method for preparing the zirconia ceramic composite material for the continuous casting nozzle. Background technique [0002] At present, the shroud, which is an important part of continuous casting functional materials, mainly has two types: fused silica and aluminum carbon, and the service life is 180-270 minutes. The problem with the long nozzle is that its neck is easy to break due to long-term vibration during use, and its corrosion resistance is also poor; the material of the domestic submerged nozzle is similar to that of the long nozzle, except for the existing ordinary submerged nozzle. In addition, there are currently aluminum-carbon submerged nozzles with composite zirconium-carbon layers, fused silica submerged nozzles with composite zirconium, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D41/54C04B35/66C04B35/10C04B35/622
Inventor 吴珂韩卫东陈忠刚郑孝勤吴茂霞黄小雨董灵芝
Owner 山东银山耐火材料有限公司
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