SU1205752A3 - Device for continuous casting of strip - Google Patents

Abstract

A strip casting apparatus is disclosed comprising a tundish (10) for receiving and holding molten metal and an orifice passage (14) defined between two spaced lips (18,19) through which the molten metal is delivered to a casting surface located within 3.048mm (0.120 inch) of the orifice passage and movable past the orifice passage at a speed of from 61 to 3048 metres (200 to 10,000 linear surface feet) per minute. In the apparatus of the present invention at least one lance (42,72) is disposed with a tip (44,74) of the lance (42,72) directed toward a cavity in the tundish adjacent at least a portion of the material defining at least one of the lips (18,19) of the orifice passage (14). Equipment is provided for delivering reactive gases through the lance (42,72) and into the cavity, and at least one aperture (46,76) is provided through which combustion products from the reactive gases escape the cavity in the tundish (10). One lip (18,19) defining the orifice passage (14) of this invention may comprise a molten metal resistent plate (40,70). The improvement of this invention comprises a heat conductive layer (48,78) in the cavity in the tundish (10) at least at a location where the reactive gases from the lance (42,72) impinge against the tundish material.

Description

The invention relates to metallurgy, more specifically to the continuous separation of metals and alloys, namely, devices for continuous casting of strip.

The purpose of the invention is to expand the technological capabilities of the device,

FIG. 1 shows an intermediate bucket, side view; in fig. 2 tipping bucket front view; in fig. 3 shows an embodiment of a tundish with a device for heating the stove, side view; 4 shows the same front view; Fig. 5 shows an embodiment of the tundish with devices for heating the stove, side view; in fig. 6 - the same front view; in fig. 7 is a front bucket version of the tundish; in fig. 8 — intermediate ladle with block clamping mechanism, side view; in fig. 9 - the same, top view.

The continuous strip casting device consists of a tundish tundish 1 with lining 2 made of refractory material, for example kaolin fiber structure, graphite, refractory clay, quartz, boron nitride and silicon, boron carbide and silicon, magnesium oxide, etc. The intermediate ladle 1 has an internal cavity 3 and an outlet 4 formed by plates 5 of fire-resistant material, for example, boron nitride, refractory clay, silicon nitride, boron carbide and silicon oxide and 1rconium, etc.

The device for continuous casting of the strip also contains a casting surface 6 located at a distance of 3.05 mm from the outflow hole 4 and having the possibility of mixing relative to it at a speed of 61-3050 m / min.

Tipping bucket 1 completed

 at least one of the top 7 n one bottom 8 blocks, fastened between themselves and imechnsch: horizontal line of the connector. Intermediate bucket 1 can be equipped with additional intermediate 9 blocks located between the top 7 and bottom 8 blocks. Outlet 4 is completed in od057522

one of the blocks and has a constant width of 0.254-3.04 mm, preferably less than 2.03 mm. In the tundish 1, a channel is loose (or channels) with a burner 10 (or burners) placed in it, directed to plate 5, and an opening 11 for removal of combustion products. . On the surface of the plate 5, facing the burner 10,

10 there is a heat-conducting layer 12 of a material of a more resistant liquid metal, such as graphite or other materials. Intermediate Bucket Blocks 1 Bonded

15 between themselves with the help of mechanical clamping means, which include a spring-loaded bracket 1.3 and a screw clamp 14, placed on the rear wall and the upper block of the tundish 20. The blocks can be fastened between themselves with the help of refractory cement or with the help of other fastening devices. To drain the melt from the tundish 1 in the rear

25 wall installed cork.

The device works as follows.

Molten metal is poured into casting ladle 1, from where it is through

30 an outlet 4 enters the casting surface 6, where cooling and melt formation into a strip occurs. The casting surface is made of copper alloy and moves at a speed of 61-3050 m / min. The inlet 4 formed by the plates 5 is heated by means of burners lOj, which prevents solidification of the metal in the outlet and increases the stability of the casting. Heat transfer layer 12 on the plates 5 protects the latter from the flame of the burners 10.

By using an intermediate. buckets of various sizes due to the installation of additional intermediate 9 blocks expand the technological capabilities of the device. The use of an intermediate bucket consisting of blocks makes it easy to assemble and dismantle the latter. In addition, by heating the outlet orifice and measuring the distance from the neg-o to the casting surface, you can cast

40

50

55

to elk of various standard sizes.

but

FIG. 2

"

FIG. . S

Claims (5)

1. DEVICE FOR CONTINUOUS CASTING OF A STRIP, comprising an intermediate casting ladle with a lining of refractory material, with an internal cavity and an outlet formed by plates of refractory material, and a casting surface located at a distance of about 3.05 mm from the outlet that can be moved reliably it with a speed of 61 3050 m / min, characterized in that, in order to expand the technological capabilities of the device, the intermediate casting ladle is made of at least one upper one of the lower blocks, fastened together and having a horizontal line of the connector, and the outlet has a constant width of 0.254-3.040 mm and is made in one of the blocks, while in the lining of the bucket there is a channel with a burner located in it adjacent to the outlet, and the hole for removal of combustion products, and at least one plate forming the outlet has a heat-conducting layer facing the burner and made of a material more resistant to liquid metal. 2. The device according to claim 1, characterized in that it is equipped with additional intermediate blocks fixed between the upper and lower blocks. 3. The device according to paragraphs. 1 and 2, characterized in that the blocks · are fastened together with the help of mechanical clamping means. 4. The device according to p. 3, characterized in that the mechanical clamping means comprises a spring-loaded bracket and a screw clamp located on the rear wall and the upper block of the intermediate bucket. 5. The device according to paragraphs. 1 and 2, characterized in that the blocks are fastened with refractory cement with i and ot-blocks and has 0.254-3.04 mm, 'less than 2.03 mm. constant preference