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A turbulent flow controller for profiled billet continuous casting tundish and its installation method

A technology of turbulence controller and profiled billet continuous casting, which is applied in the field of continuous casting tundish technology, can solve the problems of affecting the service life, unplanned shutdown of profiled billet continuous casting machine, and failure to solve the turbulence controller, etc., so as to improve the safety of use Reliability, solution to unplanned outage accidents, and the effect of solving the overall floating problem

Active Publication Date: 2017-04-12
SHANDONG IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The composite turbulence controller produced by the prior art, including shell, bottom plate, sleeve core, expansion joint, and anti-oxidation coating, has problems and deficiencies in the production and application of near-net shape profiled billet continuous casting tundish: (1) Composite The quality stability of the type turbulence controller is insufficient, and the upper layer of magnesia-carbon bricks on the side wall of the sleeve core is prone to fall off, which affects the service life; (2) The installation of the composite turbulence controller is defective, and it is prone to overall floating, resulting in continuous casting of special-shaped billets Unplanned outage accident
The turbulence controller is mainly used to solve the technical problem of difficult shroud replacement. It is not suitable for the continuous casting tundish of near-net shape profiled billet, and it does not solve the problem of turbulence controller in the continuous casting tundish of near net profile billet.
[0005] Through the search, no prior art is found to solve the technical problems of the turbulence controller in the continuous casting tundish of the near-net shape profiled billet, nor any existing technology for solving the turbulence controller of the tundish tundish of the continuous casting of the near-net-shaped profiled billet Reporting of technical issues

Method used

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  • A turbulent flow controller for profiled billet continuous casting tundish and its installation method
  • A turbulent flow controller for profiled billet continuous casting tundish and its installation method
  • A turbulent flow controller for profiled billet continuous casting tundish and its installation method

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Embodiment 1

[0042]This embodiment provides a turbulent flow controller 13 for a profiled billet continuous casting tundish, such as figure 1 with figure 2 As shown, the turbulence controller 13 includes a casing 2, a bottom plate 4, a sleeve core 3 and a pressure ring 1. The casing 2 is a cavity structure with an open upper end, the bottom plate 4 is located on the bottom of the cavity of the casing, and the bottom end of the sleeve core 3 is located on the bottom of the bottom plate. 4, the pressure ring 1 is arranged on the upper end of the sleeve core 3 and is located in the housing cavity, the longitudinal centerline of the pressure ring 1 and the sleeve core 3 coincides with the longitudinal centerline of the inner cavity of the housing, and the bottom of the inner cavity of the housing and the bottom plate 4, An expansion joint is set between the inner wall of the shell and the sleeve core 3, and an anti-oxidation coating is applied on the exposed surface of the sleeve core and the...

Embodiment 2

[0050] This embodiment provides a tundish turbulence controller for profiled billet continuous casting, the structure is as described in Embodiment 1, the difference is that the bottom plate 4 is made of magnesia carbon bricks and the length, width, and thickness are 230×115×65mm. The thickness of the expansion joint A5 between the inner wall of the shell and the sleeve core 3 is 1.5 mm; the thickness of the expansion joint B6 between the bottom of the shell cavity and the bottom plate 4 is 2.5 mm.

[0051] The sleeve core 3 and the pressure ring 1 are both designed as circular cylindrical bodies, the ring inner diameter D of the sleeve core 3 and the pressure ring 1 is 420mm, the ring thickness C of the sleeve core 3 is 115mm, and the ring thickness of the pressure ring 1 is the sum of the ring thickness C of the sleeve core and the thickness e of the expansion joint A5, the ring height a of the pressure ring 1 is 35mm, and the pressure ring 1 is casted with magnesium spinel c...

Embodiment 3

[0053] Such as image 3 with Figure 4 As shown, this embodiment provides a method for installing a turbulence controller in a profiled billet continuous casting tundish, including the following steps,

[0054] (1) Using the existing technology, first construct the bottom-wrapping working lining dry material 17, with a thickness h of 80 mm; then construct the wall-wrapping working lining dry material 15 other than the impact zone working lining, with a thickness z of 80 mm, and then bake and form ;

[0055] (2) Position the turbulence controller 13 so that its longitudinal centerline coincides with the centerline of the ladle shroud 18, and fill the space between the turbulence controller 13 and the tundish permanent lining 10 with a spread;

[0056] (3) Fix the turbulence controller 13, use the used magnesia-carbon brick wet method to build the working lining 11 in the impact area, and when the masonry reaches the upper edge of the turbulence controller 13, place three pres...

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Abstract

The invention relates to a beam blank continuous casting tundish turbulence controller and an installation method thereof. The turbulence controller comprises a shell, a bottom plate, a sleeve core and a pressing ring, wherein the shell is of a cavity structure with the upper opening open, the bottom plate is located at the bottom of the cavity of the shell, the bottom end of the sleeve core is located on the bottom plate, the pressing ring is arranged at the upper end of the sleeve core and located in the cavity of the shell, the longitudinal center line of the pressing ring and the sleeve core coincides with the longitudinal center line of the inner cavity of the shell, and an expansion seam is arranged between the bottom of the inner cavity of the shell and the bottom plate as well as between the inner wall of the shell and the sleeve core. According to the turbulence controller, because the pressing ring is arranged on the sleeve core, the problem that upper layer magnesia carbon bricks on the side wall of the sleeve core fall off is solved; when the turbulence controller is installed, a plurality of pressing bricks are arranged on the same circumference in the same plane above the pressing ring so that the overall floatation problem of the turbulence controller can be solved, the quality stability of the turbulence controller is improved, and the unexpected technological effect is achieved.

Description

technical field [0001] The invention relates to a turbulence controller for a continuous casting tundish of a profile billet and an installation method thereof, and belongs to the technical field of continuous casting tundish technology. Background technique [0002] Due to the particularity of the cross-section, continuous casting of near-net-shape shaped billets is a new continuous casting process integrating round billets, square billets and slabs. The tundish is designed as a narrow and long trapezoidal bag. The flow field in the tundish is not uniform when pouring in the diameter nozzle. Installing a turbulence controller in the tundish can change the running route of the molten steel in the tundish, prolong the residence time, promote the floating and removal of inclusions, and play an important role in improving the quality of the slab. The composite turbulence controller produced by the prior art, including shell, bottom plate, sleeve core, expansion joint, and anti...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22D11/10
CPCB22D11/10
Inventor 杜显彬武光君李安富陈永生黄宏刚黄珊珊
Owner SHANDONG IRON & STEEL CO LTD
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