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Electromagnetic type tundish restraining submersed entry nozzle from being blocked

A tundish and immersion technology, which is applied in the direction of manufacturing tools, casting molten material containers, metal processing equipment, etc., to improve the flow field, improve the quality of the slab, and suppress the effects of adverse effects

Active Publication Date: 2018-10-26
NORTHEASTERN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is to introduce a rotating magnetic field to make the molten steel rotate, suppress the interception or even blockage of the submerged nozzle, improve the uniformity and stability of the outlet flow, promote the flow field and temperature field in the crystallizer, and further improve the slab quality without affecting the existing continuous casting process

Method used

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  • Electromagnetic type tundish restraining submersed entry nozzle from being blocked
  • Electromagnetic type tundish restraining submersed entry nozzle from being blocked
  • Electromagnetic type tundish restraining submersed entry nozzle from being blocked

Examples

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Effect test

Embodiment 1

[0033] The utility model relates to a tundish for suppressing blockage of a submerged nozzle by electromagnetic means. The rotating magnetic field generating device is a ring-shaped device, which adopts cogging type concentrated winding, the frequency is 5Hz, the current is 1500A, and the magnetic induction intensity is 10 1 Tesla, the direction of rotation of the magnetic field is clockwise. The rotating magnetic field generating device uses a fixed supporting plate to be placed in the cavity of the rotating magnetic field generating device, and the fixing method may be screw connection. Both the waterway and the electric circuit need to be led out to the right end of the tundish for quick connection, and a single-flow slab tundish is used. There are installation holes for the submerged nozzle on the waterproof supporting plate, forming a closed space together with the cavity of the tundish, and there are leakage channels on both sides.

Embodiment 2

[0035] The utility model relates to a tundish for suppressing blockage of a submerged nozzle by electromagnetic means. The rotating magnetic field generating device is a circular device, using Clem winding, the frequency is 300Hz, the current is 10A, and the magnetic induction is 10 -4 Tesla, the direction of rotation of the magnetic field is counterclockwise. The rotating magnetic field generating device uses a fixed supporting plate to be placed in the cavity of the rotating magnetic field generating device, and the fixing method may be screw connection. Both the waterway and the electric circuit need to be led out to the left end of the tundish for quick connection, and a 6-strand billet tundish is used. There are installation holes for the submerged nozzle on the waterproof supporting plate, forming a closed space together with the cavity of the tundish, and there are leakage channels on both sides.

Embodiment 3

[0037] The utility model relates to a tundish for suppressing blockage of a submerged nozzle by electromagnetic means. The rotating magnetic field generating device is a ring-shaped device, which adopts cogging type concentrated winding, the frequency is 100Hz, the current is 800A, and the magnetic induction is 10 -2 Tesla, the direction of rotation of the magnetic field is counterclockwise. The rotating magnetic field generating device uses a fixed supporting plate to be placed in the cavity of the rotating magnetic field generating device, and the fixing method may be screw connection. Both the waterway and the electric circuit need to be led out to the left end of the tundish for quick connection, and a 3-strand large round billet tundish is used. There are installation holes for the submerged nozzle on the waterproof supporting plate, forming a closed space together with the cavity of the tundish, and there are leakage channels on both sides.

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Abstract

The invention belongs to the technical field of continuous casting, in particular to an electromagnetic type tundish restraining a submersed entry nozzle from being blocked. The electromagnetic type tundish restraining the submersed entry nozzle from being blocked comprises a tundish bottom cavity, a rotating magnetic field generation device, a water channel, a circuit and a waterproof supportingplate. The rotating magnetic field generation device is installed in the tundish bottom cavity. The water channel and the circuit are provided with respective cavities. The waterproof supporting plateis arranged at the lower end. The electromagnetic type tundish restraining the submersed entry nozzle from being blocked can be universally applied to existing square blank, round blank and plate blank continuous casting machines and can be used for single-strand continuous casting or multi-strand continuous casting; steel liquid can generate clockwise or anticlockwise rotation at the positions of the submerged entry nozzle and a stopper rod, the submerged entry nozzle can be restrained from being blocked, the outflow uniformity and stability of the submerged entry nozzle can also be improved, a flow field and a temperature field in a crystallizer are made uniform, and then the quality of a cast blank is improved.

Description

technical field [0001] The invention belongs to the technical field of continuous casting, and in particular relates to a tundish for electromagnetically suppressing the clogging of a submerged nozzle. Background technique [0002] Continuous casting of steel is a process in which liquid steel with a certain degree of superheat is continuously cooled through a water-cooled crystallizer into a solid billet with a certain shape. With the application and development of continuous casting technology, especially due to the higher and higher requirements of users for steel quality and the fierce competition in the international market, the quality of continuous casting slabs has been paid more and more attention. Strictly control the cleanliness of molten steel to reduce the Billet defect has become an important work in continuous casting production. [0003] The submerged entry nozzle is a pouring refractory sleeve installed at the bottom of the tundish in the continuous casting...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22D41/62
CPCB22D41/507B22D41/62
Inventor 李德伟王强朱晓伟吴春雷丸川雄净赫冀成
Owner NORTHEASTERN UNIV
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