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Tundish permanent lining preparation method and construction molding bed thereof

A tundish and permanent technology, applied in the field of tundish, can solve the problems of permanent lining damage and low service life of the tundish, and achieve the effects of reducing stress, high service life and good use effect.

Pending Publication Date: 2020-12-04
DAYE SPECIAL STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing the permanent lining of the tundish and its construction film, so as to at least solve the problems that the permanent lining of the tundish is easily damaged and has a low service life.

Method used

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  • Tundish permanent lining preparation method and construction molding bed thereof
  • Tundish permanent lining preparation method and construction molding bed thereof

Examples

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preparation example Construction

[0055] The present invention also provides a method for preparing a tundish with a permanent lining, the method comprising the following steps:

[0056] Step 1, pouring of permanent liner bottom;

[0057] Place the seat brick on the 4th hole of the nozzle hole, completely cover the 4th hole of the nozzle hole, pour the permanent lining castable to the bottom of the tundish shell 3, and pour it until it is flush with the seat brick. After the bottom pouring material is solidified, the bottom pouring of the permanent liner 11 is completed. Preferably, the standing time is more than 24h.

[0058] Step 2, pouring of permanent lining cladding;

[0059] Apply lubricating oil on the outer wall surface of the construction membrane 2 of the permanent lining, place it in the tundish shell 3, fill the permanent lining castable into the gap between the shell 3 and the construction membrane 2, and make the castable and the cladding 3 After the castable is solidified, the construction fi...

Embodiment 1

[0065] This embodiment provides a method for preparing the permanent lining of the tundish 1, including the tundish shell 3, the construction film 2 of the tundish permanent liner 11, and the construction film 2 has arcs at the corners on both sides of the T-shaped groove The radius of the arc-shaped chamfer is 100mm, and the length of the joint is exactly one-sixth of a circle.

[0066] The construction steps of the permanent lining are as follows: after placing the seat brick in the hole of the seat brick (namely, the nozzle hole 4), start pouring the permanent lining at the bottom of the tundish, pour the pouring material until it is flush with the seat brick, and let it stand for 24 hours after pouring the bottom of the tundish. For more than an hour, hoist the tundish permanent lining construction film 2 coated with lubricating oil into the tundish shell 3 with a crane to keep the gap between the tundish construction film 2 and the shell 3 consistent. Fill the stirred cas...

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Abstract

The invention provides a tundish with a permanent lining and a construction molding bed thereof. The tundish comprises the permanent lining; the permanent lining comprises a tundish wall and a tundishbottom; the tundish wall is of a T-shaped groove structure, and the tundish wall comprises an impact area tundish wall and a pouring area tundish wall of a convex part; an arc-shaped transition partis arranged at the inflection point joint between the inner side of the impact area tundish and the inner side of the pouring area tundish wall; a water gap hole is arranged on the tundish bottom andcommunicates with the interior and exterior of an accommodating cavity; a working lining layer attached to the inner wall surface of the permanent lining layer; and a slag blocking wall, which is tightly connected with the permanent lining layer and arranged at the position of the impact area tundish wall of the permanent lining layer, wherein the slag blocking wall and the convex part of the T-shaped groove define an impact area, and a flow guide hole is arranged on the slag blocking wall and penetrates through the interior and the exterior of the wall body of the slag blocking wall. The tundish permanent lining prepared by using the construction molding bed of the invention is low in manufacturing cost, good in using effect and long in service life.

Description

technical field [0001] The invention belongs to the field of tundish technology, and in particular relates to a preparation method of a permanent lining of a tundish and a construction film thereof. Background technique [0002] With the rapid development of continuous casting technology and the continuous increase in the number of continuous casting furnaces, higher requirements are placed on the continuous casting tundish, which not only requires the tundish to be permanently lined with a longer service life, thereby reducing production costs, but also requires The surface of the tundish is made flat to reduce the erosion of the molten steel on the refractory material of the tundish to avoid contamination of the molten steel. The permanent lining of the tundish is often damaged at the corners on both sides of the T-shaped slot during use, causing the permanent lining of the tundish to be repaired or scrapped. Therefore, how to maintain the integrity of the permanent linin...

Claims

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Application Information

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IPC IPC(8): B22D41/02
CPCB22D41/02B22D41/023
Inventor 姜亚清陈继红李凯夏旺苟吕文俊
Owner DAYE SPECIAL STEEL CO LTD
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