A Tundish for Electromagnetically Suppressing Submerged Nozzle Clogging

A tundish, immersion technology, applied in the direction of manufacturing tools, metal processing equipment, casting melt containers, etc.

A tundish, immersion technology, applied in the direction of manufacturing tools, metal processing equipment, casting melt containers, etc.

CN108705075BActive Publication Date: 2020-10-23NORTHEASTERN UNIV LIAONING
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  • A Tundish for Electromagnetically Suppressing Submerged Nozzle Clogging
  • A Tundish for Electromagnetically Suppressing Submerged Nozzle Clogging
  • A Tundish for Electromagnetically Suppressing Submerged Nozzle Clogging

Examples

Experimental program
Comparison scheme
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

Patent Timeline
23 Oct 2020
Publication
CN108705075B
IPC
B22D41/62
CPC
B22D41/507; B22D41/62
Inventors
李德伟; 王强