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Stopper rod head for continuously casting high-manganese and high-oxygen steel

A stopper head, high manganese technology, applied in the field of refractory materials, can solve few problems and achieve the effect of improving erosion resistance

Inactive Publication Date: 2014-06-25
JIANGSU TAIRUI REFRACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, among the traditional aluminum-carbon refractory materials, metal silicon powder and boron carbide series are widely used for anti-oxidation methods, while metal aluminum and boron nitride are rarely used in the anti-oxidation aspects of aluminum-carbon refractory materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] An integral plug rod head for continuous casting, in which 30% spinel, 1% metal aluminum, 2% metal silicon, 0.5% boron carbide and 0.5% boron nitride are added to the rod head. The rod head adopts the following raw material ratio: tabular corundum: 180kg, spinel: 120kg, flake graphite: 44kg, metal aluminum: 4kg, metal silicon: 8kg, boron carbide: 2kg, boron nitride: 2kg, phenolic resin (powder ): 4kg, phenolic resin (liquid): 36kg.

[0029] All kinds of raw materials are proportioned according to the required particle size, among which the particle size of tabular corundum is 1~0.5mm, 0.6~0.2mm, 0.2~0mm, the weight ratio of the above three kinds is: 2:2:1; the particle size of spinel is 180 mesh, 325 mesh, the weight ratio of the above two kinds is: 1:2; the particle size of flake graphite is +50 mesh, +80 mesh, the purity is more than 99%, the weight ratio of the above two kinds is: 1:1.

[0030] The stopper head is made according to the above-mentioned scheme, and th...

Embodiment 2

[0032] An integral stopper head for continuous casting, in which 27% spinel, 1.5% metal aluminum, 3% metal silicon, 0.3% boron carbide and 0.3% boron nitride are added. The rod head adopts the following raw material ratio: plate corundum: 195kg, spinel: 108kg, flake graphite: 40kg, metal aluminum: 6kg, metal silicon: 12kg, boron carbide: 1.2kg, boron nitride: 1.2kg, phenolic resin (powder): 4.6kg, phenolic resin (liquid): 32kg.

[0033] All kinds of raw materials are proportioned according to the required particle size, among which the particle size of tabular corundum is 1~0.5mm, 0.6~0.2mm, 0.2~0mm, the weight ratio of the above three kinds is: 2:2:1; the particle size of spinel is 180 mesh, 325 mesh, the weight ratio of the above two kinds is: 1:2; the particle size of flake graphite is +50 mesh, +80 mesh, the purity is above 99%, the weight ratio of the above two kinds is: 1:1.

[0034] The stopper head is made according to the above-mentioned scheme, and the service life ...

Embodiment 3

[0036] An integral plug rod head for continuous casting, in which 30% spinel, 1.5% metal aluminum, 3% metal silicon, 0.3% boron carbide and 0.3% boron nitride are added to the rod head. The rod head adopts the following raw material ratio: tabular corundum: 183kg, spinel: 120kg, flake graphite: 40kg, metal aluminum: 6kg, metal silicon: 12kg, boron carbide: 1.2kg, boron nitride: 1.2kg, phenolic resin (powder): 4.6kg, phenolic resin (liquid): 32kg.

[0037] All kinds of raw materials are proportioned according to the required particle size, among which the particle size of tabular corundum is 1~0.5mm, 0.6~0.2mm, 0.2~0mm, and the weight ratio of the above three kinds is: 2:2:1; the particle size of spinel is 180 mesh, 325 mesh, the weight ratio of the above two kinds is: 1:2; the particle size of flake graphite is +50 mesh, +80 mesh, the purity is above 99%, the weight ratio of the above two kinds is: 1:1.

[0038] The overall stopper head is made according to the above scheme, ...

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PUM

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Abstract

The invention provides a stopper rod head for continuously casting high-manganese and high-oxygen steel. The rod head takes corundum, spinel and carbon as main materials, an Al2O3-MgO-C material is used instead of the conventional Al2O3-C material, and part of metal powder and non-oxides are added according to a special proportion. The metal powder is selected from metal aluminum and metal silicon; the non-oxides are selected from boron carbide and boron nitride. Total adding amount of the metal powder and the non-oxides is 1%-5%. By adding the four materials, impact and corrosion resistance of the rod head material are greatly improved while high manganese and high-oxygen steel are cast, so that service life of the stopper rod head is prolonged by over 5 hours.

Description

technical field [0001] The invention relates to the field of refractory materials, in particular to a stopper tip for continuous casting of high manganese and high oxygen steel. Background technique [0002] With the continuous development of the steel industry, the refractory industry at home and abroad has also made great progress. Aluminum-carbon refractories are a new type of refractory materials that began to emerge around the 1980s. Initially, it was mainly used in ladle bricks, and later it was gradually extended to continuous casting tundish. It provides indispensable technical support for the rapid development of continuous casting technology in the steel industry. [0003] Aluminum-carbon refractories for continuous casting are commonly known as the three major components of continuous casting, which are mainly composed of long nozzles, integral stoppers, and submerged nozzles. As one of the three major products of continuous casting, the integral stopper pl...

Claims

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Application Information

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IPC IPC(8): C04B35/66
Inventor 吴建湘黄亚平蒋永明
Owner JIANGSU TAIRUI REFRACTORY