CN215468059U

CN215468059U - Two flow board base continuous casting tundish composite dry material working lining pouring structure

Info

Publication number: CN215468059U
Application number: CN202122094286.2U
Authority: CN
Inventors: 刘艳; 孙逊
Original assignee: Anshan Iron And Steel Metallurgical Furnace Material Technology Co ltd
Current assignee: Anshan Iron And Steel Metallurgical Furnace Material Technology Co ltd
Priority date: 2021-09-01
Filing date: 2021-09-01
Publication date: 2022-01-11
Anticipated expiration: 2031-09-01

Abstract

The utility model provides a two flow compound dry-type material work lining pouring structures of board base continuous casting tundish, includes impact zone work lining pouring area, waters steel zone work lining pouring area impact zone work lining pouring area with it places movable partition to water steel zone work lining pouring area's boundary position impact zone work lining pouring area's intermediate position places standard thickness wedge utensil it places standard thickness wedge utensil to water steel zone work lining pouring area intermediate position movable partition and the inboard installation roaster mould of standard thickness wedge utensil. The utility model can realize the simultaneous pouring of the tundish impact area and the steel pouring area by respectively adopting dry materials with better compatibility and different grades, and can ensure that the constructed dry material working lining has good integrity and thickness uniformity.

Description

Two flow board base continuous casting tundish composite dry material working lining pouring structure

Technical Field

The utility model relates to the technical field of unshaped refractory materials of a tundish, in particular to a pouring structure of a composite dry material working lining of a two-flow plate blank continuous casting tundish.

Background

Tundish metallurgy is a special external refining technology, is a key link for ensuring the quality of excellent steel in the production process from steel smelting and refining to solid continuous casting billet manufacturing, and becomes an essential important technology for high-efficiency continuous casting. With the rapid development of the high-efficiency continuous casting steel-making technology in recent years, the use of the quick-change nozzle technology has higher and higher requirements on the long-life use of the tundish working lining.

In order to meet the requirement of prolonging the service life of the tundish, the improvement of the grade of the raw materials of the tundish working lining is indispensable, and because the grade of the raw materials is improved, the remarkable increase of the cost of the refractory is brought, and huge operating cost pressure is brought to the thin and convenient refractory enterprises. Therefore, according to the use conditions and damage mechanisms of different parts of the tundish in the continuous casting process, composite construction by respectively adopting working lining refractory materials with different raw material grades is an effective measure for reducing the cost of the refractory materials.

The patent document with the publication number of CN201510992438.7 discloses a reclaimed material working lining for a continuous casting tundish and a preparation method thereof, wherein the reclaimed material working lining is divided into an impact area working lining and a non-impact area working lining, the impact area working lining is built by adopting waste magnesia carbon bricks and reclaimed coating mud materials in a wet method, a ladle wall working lining and a ladle bottom working lining are made of reclaimed dry materials, and an overflow port working lining and a ladle edge working lining are made of reclaimed coating materials. The utility model has the following defects: the construction is complicated and the crack of the joint part is easy to occur because three materials with completely different construction performances, namely the waste magnesia carbon machine pressed brick, the regeneration dry material and the regeneration coating material, are generated in the utility model, and in addition, because the carbon-containing waste brick and the regeneration material are used, the carbon increasing and the oxygen increasing of the molten steel are easy to be generated, the improvement of the casting blank quality and the yield is not facilitated, and the defect that the continuous casting of the tundish is fatal is caused.

Considering the difference of the using conditions and the corrosion loss mechanism of the tundish impact area, the steel casting area and the ladle bottom, dry materials with better compatibility and different materials and different grades can be respectively adopted for casting, so that the aims of prolonging the service life of the tundish and reducing the input cost can be fulfilled, and in order to realize the simultaneous casting of the dry materials with different materials and grades on the tundish impact area, the steel casting area and the ladle bottom, the casting structure of the composite dry material working lining of the continuous casting tundish of the two-flow plate blank is specially developed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a pouring structure of a composite dry material working lining of a two-flow plate blank continuous casting tundish, which can realize simultaneous pouring of dry materials with better compatibility and different grades on a tundish impact area and a steel pouring area.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the utility model provides a two flow compound dry-type material work lining pouring structures of board base continuous casting tundish, includes impact zone work lining pouring area, waters steel zone work lining pouring area impact zone work lining pouring area with it places movable partition to water steel zone work lining pouring area's boundary position impact zone work lining pouring area's intermediate position places standard thickness wedge utensil it places standard thickness wedge utensil to water steel zone work lining pouring area intermediate position movable partition and the inboard installation roaster mould of standard thickness wedge utensil.

The width of the movable partition plate is consistent with the thickness of the pouring area, and a lifting hook is arranged at the upper end of the movable partition plate.

The standard thickness voussoir is the L type, and the thickness of one side of L type is the standard thickness of pouring zone, the upper end of standard thickness voussoir is equipped with the lifting hook.

The pouring area of the ladle bottom working lining, the pouring area of the impact area working lining and the pouring area of the steel pouring area working lining are all arranged on the inner side of the permanent lining of the tundish.

Compared with the prior art, the utility model has the beneficial effects that:

1) the movable partition plate with the width consistent with the thickness of the working lining construction layer is used for ensuring that the impact area and the steel pouring area (water gap area) are separated, and the high-grade dry material in the impact area is prevented from naturally flowing to the steel pouring area to cause the use waste of the high-grade dry material.

2) The movable partition plate can be drawn out after the dry material is poured, so that the dry materials of different pouring areas can be better fused after being vibrated, and cracks are effectively prevented from being generated at boundaries of the dry materials of different materials when the working lining is baked.

3) The utility model also provides a standard thickness wedge to ensure that the thickness of a gap between the die and the permanent lining is consistent when the roaster die is installed, so that the thickness of each part of the dry material working lining is uniform, each part of the working lining achieves the same using effect, and the service life of the working lining is effectively ensured to be consistent.

Drawings

FIG. 1 is a schematic plan view of the present invention;

FIG. 2 is a schematic view of a movable partition;

FIG. 3 is a side view of FIG. 2;

FIG. 4 is a schematic view of a standard thickness wedge.

In the figure: 1-working lining pouring area of impact area; 2-casting a working lining casting area in a steel casting area; 3-a ladle bottom working lining pouring area; 4-a movable partition board; 5-standard thickness wedge block; 6-a hook.

Detailed Description

The following further illustrates embodiments of the utility model:

as shown in fig. 1, the two-flow plate blank continuous casting tundish composite dry material working lining pouring structure comprises an impact area working lining pouring area 1 and a steel pouring area working lining pouring area 2, wherein a movable partition plate 4 is arranged at the boundary position of the impact area working lining pouring area 1 and the steel pouring area working lining pouring area 2, a standard thickness wedge 5 is arranged at the middle position of the impact area working lining pouring area 1, a standard thickness wedge 5 is arranged at the middle position of the steel pouring area working lining pouring area 2, and a roaster mold is arranged on the inner sides of the movable partition plate 4 and the standard thickness wedge 5.

Referring to fig. 2 and 3, the width X of the movable partition plate 4 is consistent with the thickness of the casting area, and the upper end of the movable partition plate 4 is provided with a hook 6. The height of the movable partition plate 4 is 15mm higher than that of the ladle edge, and the movable partition plate 4 can be drawn out from the pouring area after the dry material is poured.

Referring to fig. 4, the standard thickness wedge 5 is L-shaped, the thickness d of one side edge of the L-shape is the standard thickness of the pouring area, the upper end of the standard thickness wedge 5 is provided with a hook 6, and when the pouring basket is used, the other side edge of the L-shape is placed on the edge of the pouring basket.

The pouring device further comprises a ladle bottom working lining pouring area 3, wherein the ladle bottom working lining pouring area 3, the impact area working lining pouring area 1 and the steel pouring area working lining pouring area 2 are all arranged on the inner side of the tundish permanent lining.

The working process of the utility model is as follows:

1) preparation of a working lining roaster die: after each use, the residual materials on the surface of the roaster die are cleaned in time, then the demoulding oil is uniformly coated for standby, and a layer of coating oil is sprayed before use, so that a better lubricating demoulding effect is achieved;

2) construction of a tundish bottom working lining dry material: uniformly pouring the dry material to the bottom of the ladle, then respectively placing scale cones at the middle positions of the two water gap areas and the tundish, uniformly flattening the dry material and ensuring that the dry material meets the thickness requirement;

3) installing a roaster die: according to the construction thickness requirement, standard thickness wedges 5 are respectively placed at E, F, G, H (see fig. 1) in the middle of an impact area working lining pouring area 1 and a steel pouring area working lining pouring area 2, then a roaster die is lifted by a crane and is gently placed on a tundish inner bag bottom dry material, and the purpose of placing the standard thickness wedges 5 is to better ensure that the distances between each part of the die and a tundish permanent lining are consistent after the roaster die is installed, and ensure that the thickness of the ladle wall dry material working lining is uniform after construction.

4) Installing a movable partition plate 4: a movable partition plate 4 (see figure 1) is arranged at the boundary A, B, C, D of the impact area and the cast steel area, and no gap is ensured at the contact part of the movable partition plate 4 and the roaster die and the permanent lining of the tundish.

5) And (3) carrying out dry material pouring construction on the working lining of the impact area and the working lining of the steel pouring area, after the pouring area 1 of the working lining of the impact area and the pouring area 2 of the working lining of the steel pouring area are filled, drawing out the movable partition plate 4 and the wedge 5 with the standard thickness, starting an automatic vibrator of a roaster to vibrate the dry material, and setting the vibration time to be 20-30 seconds so that the dry material of the impact area and the dry material of the steel pouring area are better fused at the joint.

6) And (5) baking the tundish comprehensive working lining.

Claims

1. The utility model provides a two flow board blank continuous casting tundish composite dry material work lining pouring structures, its characterized in that, including impact area work lining pouring area, water steel district work lining pouring area impact area work lining pouring area with water steel district work lining pouring area's boundary position and place movable partition plate impact area work lining pouring area's intermediate position places standard thickness wedge utensil pouring area's intermediate position water steel district work lining pouring area intermediate position places standard thickness wedge utensil baffle and the inboard installation roaster mould of standard thickness wedge utensil.

2. The casting structure of the composite dry work lining for the continuous casting of the two-flow-plate blank and the tundish according to claim 1, wherein the width of the movable partition plate is consistent with the thickness of the casting area, and the upper end of the movable partition plate is provided with a lifting hook.

3. The casting structure of the composite dry work lining of the continuous casting tundish of the two-flow slab casting according to claim 1, wherein the standard thickness wedge is L-shaped, the thickness of one side of the L-shaped is the standard thickness of the casting area, and the upper end of the standard thickness wedge is provided with a lifting hook.

4. The casting structure of the composite dry work lining of the two-flow plate blank continuous casting tundish according to claim 1, further comprising a ladle bottom work lining casting area, wherein the ladle bottom work lining casting area, the impact area work lining casting area and the steel casting area work lining casting area are all arranged on the inner side of the permanent lining of the tundish.