Rotating electromagnetic field and tangential flow guiding composite purifying tundish steel liquid method and device

A composite purification and rotating magnetic field technology, applied in centrifuges and other directions, can solve the problems of inability to achieve purification effect, decline in the removal effect of inclusions, high power, etc., to avoid the danger of slag entrainment, reduce volume, and reduce energy consumption. Effect

Inactive Publication Date: 2008-09-10
SHANGHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, in the centrifugal tundish technology, the rotation of molten steel is provided by the electromagnetic field, which requires high power consumption; in addition, when the ladle nozzle is located at the center of rotation, the impact flow of the ladle nozzl

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  • Rotating electromagnetic field and tangential flow guiding composite purifying tundish steel liquid method and device
  • Rotating electromagnetic field and tangential flow guiding composite purifying tundish steel liquid method and device
  • Rotating electromagnetic field and tangential flow guiding composite purifying tundish steel liquid method and device

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Embodiment 1

[0028] see figure 1 , figure 2 with image 3 The method for compounding and purifying molten steel in a tundish with a rotating electromagnetic field and tangential flow is as follows: a rotating magnetic field generating device generates rotating electromagnetic force to drive the molten steel in the rotating chamber 1 of the tundish to generate a rotating flow, and guide the vertical impact flow of the ladle nozzle 5 The direction is horizontal and tangentially flows into the rotating chamber 1, so that the vertical impact flow force of the molten steel is converted into a rotating flow force, and the rotating flow force is combined with the rotating flow force driven by the rotating electromagnetic force, so that the molten steel in the rotating chamber produces a symmetrical rotating flow. Centrifugal force separates non-metallic impurities in molten steel.

Embodiment 2

[0030] see figure 1 , figure 2 with image 3 The device for purifying molten steel in a tundish combined with rotating electromagnetic field and tangential flow guide includes a tundish containing a rotating chamber 1, said rotating chamber 1 is connected to a guide groove 4 along a tangent line, and a ladle nozzle 5 is placed in the diversion groove 4 , a fan-shaped rotating magnetic field generating device 3 is placed outside the rotating chamber 1 .

[0031]Its detailed structure and working principle: the tundish is mainly composed of rotating chamber 1, distribution chamber 2, diversion groove 4, retaining wall 8, retaining dam 6, fan-shaped rotating magnetic field generator 3, single-flow tundish 10, ladle nozzle 5, The tundish is composed of a stopper rod 14 and the like, and the swirling chamber 1 and the distributing chamber 2 are connected by a channel 12 at the bottom of the retaining wall 8 . A fan-shaped rotating magnetic field generating device 3 is arranged ...

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Abstract

The invention relates to a method for purifying liquid steel in tundish by the composition of a rotary electromagnetic field and a tangential diversion and a device. The method is that the generating device of the rotary magnetic field generates the rotary electromagnetic force to drive steel water in a tundish rotary chamber to generate the rotary flow, which is characterized in that the vertical impact flow of a ladle nozzle is guided to horizontal tangential to flow into the rotary chamber to form the power of the rotary flow, then the power of the rotary flow is composed with the rotary electromagnetic force to allow the steel water in the rotary chamber to generate the symmetric rotary flow, and the centrifugal force is utilized to separate the non-metallic impurities from the steel water. The device is the tundish which contains the rotary chamber, which is characterized in that the rotary chamber is connected with a guide slot along the tangent, the ladle nozzle is arranged in the guide slot, and the outside of the rotary chamber is provided with a generating device of the fan-shaped rotary magnetic field. The invention adopts the composition of the rotary electromagnetic field and the tangential guide flow, thus enhancing the rotation intensity of the steel water, reducing the input power and the energy consumption of the generating device of the rotary magnetic field, eliminating the damage function of the ladle injection flow on the centrifugal separation of inclusions and improving the purification effect.

Description

technical field [0001] The present invention relates to a new method for compound purification of molten steel in continuous casting tundish by using rotating electromagnetic field and tangential flow guide, that is, using electromagnetic field to drive the rotation of molten steel in the ladle nozzle area of ​​the tundish, and at the same time displacing the ladle nozzle impact area On the side of the tundish, the impact kinetic energy of the ladle nozzle is converted into a horizontal tangential impact flow, and the compound rotating magnetic field drives the molten steel to rotate. Using the difference in density between the inclusions and the molten steel, the inclusions migrate centripetally, and then collide, aggregate, grow and float quickly remove. The invention belongs to the technical field of pure steel continuous casting. Background technique [0002] With the introduction of the concept of "tundish metallurgy" in the early 1980s, the tundish has developed from ...

Claims

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Application Information

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IPC IPC(8): B22D1/00B04B5/10
Inventor 钟云波王赟王保军任忠鸣
Owner SHANGHAI UNIV
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