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Graphite electrode for applying pulse current to continuously casting tundish

A technology for continuous casting of tundish and graphite electrodes is applied in the field of graphite electrodes to achieve the effects of convenient electric pulse treatment, improved solidification structure, and improved high temperature erosion resistance.

Inactive Publication Date: 2012-02-08
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1) The installation method of the practical electrode needs to be improved; the resistance to high temperature oxidation and erosion of the electrode needs to be improved, and it needs to achieve a long-term service performance, and try to achieve the same life as the tundish lining

Method used

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  • Graphite electrode for applying pulse current to continuously casting tundish
  • Graphite electrode for applying pulse current to continuously casting tundish
  • Graphite electrode for applying pulse current to continuously casting tundish

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Embodiment 1

[0034] The rod-shaped graphite electrode 4 of the present invention is prepared from the following raw materials in weight percentage: fused magnesia aggregate (72%), flake graphite (15%), aluminum (3%), magnet powder (2%), modified Phenolic resin (8%).

[0035] In this embodiment, the cylindrical section diameter of the rod-shaped graphite electrode 4 is selected as 200mm.

Embodiment 2

[0037] The rod-shaped graphite electrode 4 of the present invention is prepared from the following raw materials in weight percentage: high-alumina bauxite aggregate (75%), flake graphite (18%), silicon-calcium (2%), and phenolic resin (5%).

[0038] In this embodiment, the cylindrical section diameter of the rod-shaped graphite electrode 4 is selected as 80mm.

Embodiment 3

[0040] The rod-shaped graphite electrode 4 of the present invention is formulated from the following raw materials in weight percentage: corundum aggregate (58%), magnesia (15%), flake graphite (17%), industrial silicon (3%), tar pitch (7%) %).

[0041] In this embodiment, the cylindrical section diameter of the rod-shaped graphite electrode 4 is selected as 50 mm.

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Abstract

The invention discloses a graphite electrode for applying pulse current to a continuously casting tundish. The graphite electrode is characterized by comprising a truncated-cone-shaped fireproof material (2) and an electrode chassis (3), wherein the electrode chassis (3) is wrapped in the truncated-cone-shaped fireproof material (2); the surface of the electrode chassis (3) is vertically connected with a bar-shaped graphite electrode (4); the bar-shaped graphite electrode (4) passes through the truncated-cone-shaped fireproof material (2); the end head of the bar-shaped graphite electrode (4)is exposed on the surface of the truncated-cone-shaped fireproof material (2) and is connected with steel liquid; a pulse current access end (1) is arranged at the bottom end of the electrode chassis(3); and the pulse current access end (1) passes through the bottom end face of the truncated-cone-shaped fireproof material (2) and is connected with a pulse power supply. The graphite electrode hasthe advantages of simple and convenient manufacture, high-temperature oxidation resistance, high-temperature steel liquid corrosion resistance, long service life, low resistivity, high electrical conductivity, and stable performance, safety and reliability during the process of pulse processing.

Description

technical field [0001] The invention belongs to a technique for applying pulse current to a continuous casting tundish in the field of steelmaking, in particular to a graphite electrode for applying pulse current to a continuous casting tundish. Background technique [0002] Improving the strength, toughness, ductility, processing performance and service life of steel is one of the important research topics of the steel industry in the 21st century. It is an effective method to change the metallographic structure and refine the grain size. It can be achieved by increasing the content of specific alloying elements in the steel, or it can be achieved by controlled rolling and controlled cooling and equal-diameter angular extrusion cold deformation technology. [0003] Electric pulse refinement of solidified metal structure is a new technology in the field of metal structure refinement. Electric pulse refinement of continuous casting slab solidification structure is mainly to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/11
Inventor 袁守谦杨拉道王超张西锋李雪洁李都宏
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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