JPS6061145A - Belt type continuous casting machine - Google Patents

Abstract

PURPOSE:To perform belt type continuous casting with good quality without formation of flash by pressing belts which face each other near the corner parts on the molten metal side of side blocks to the corner parts or increasing the wall thickness in the corner parts of the side blocks. CONSTITUTION:Belts 2 near the corners C on the molten steel side of side blocks 9 are pressed by providing corner pressers 12 or the thickness on the molten metal side of the blocks 9 is increased to increase the effect of pressing the belts. The pressing force of the corner pressers to the belts 2 is adjusted by adjusting force F. Contact is always maintained between the belts 2 and the corner parts C of the blocks 9 by such mechanism. Penetration of the molten metal and formation of flash are thus obviated and therefore the operation is stabilized and the belt type continuous casting with good quality is made possible.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a belt-type continuous casting machine that continuously casts thin plates of steel, other metals, and alloys, and in particular, the present invention relates to a belt-type continuous casting machine that continuously casts thin plates of steel, other metals, and alloys, and in particular, the present invention relates to a belt-type continuous casting machine that continuously casts thin plates of steel, other metals, and alloys, and in particular, the present invention relates to a belt-type continuous casting machine that continuously casts thin plates of steel, other metals, and alloys. Regarding machines.

BACKGROUND ART Conventional belt-type continuous casting apparatuses include those shown in FIGS. 1 and 2.

FIG. 1 is a vertical cross-sectional view perpendicular to the long side of the slab, and FIG. 2 is a view taken along the line FF in FIG. 1.

In Figure 1.2, 1 is the slab, and 1' is the upper surface of the slab 1 (
molten steel, i.e. meniscus), 2 is a belt (generally 1
~2+o+t steel), 3 is a gooley driven by a belt 2, 3' is a vinyl roll for drawing the slab 1, 4
5 is a nozzle that supplies the molten steel in the tundish 4 between the belts 2, and 6 is the molten steel pressure between the belts 2 (
7 is a spray nozzle; 8 is the nozzle 7;
9 is sprayed cooling water (sprayed on the back side of the belt 2, cools the belt 2 and indirectly cools the slab 1, and solidifies the molten steel 1't). A fixed side block (prevents the molten steel 1' from escaping laterally), 10 a cooling water passage (cools the side block 9 and indirectly cools the side of the slab 1), 11 a belt 2 This is a presser foot block (fixed).

The belt-type continuous casting apparatus described above moves the belt 2 in the direction of the arrow in FIG. 1 in accordance with the amount of poured metal to solidify the molten steel and produce the slab 1.

However, in this device, FIG.

There are drawbacks as shown in FIG.

Figure 3 shows the casting operation status. The temperature of the side block 9 in contact with molten steel rises to about 300° C., expands, and only a portion C of the corner contacts the belt 2, causing wear.

Figure 4 shows the state after the casting operation is completed. The wall thickness of the corner part C becomes thinner due to abrasion, and the temperature is about 300° C. during casting, but since it rarely cools down to room temperature, it does not come into contact with the belt 2, and a gap Di is created.

This gap is on the order of [L2 to [15 m].

Next, when a casting operation is performed, molten steel is inserted into this gap, forms a flash, and is pulled out downward, increasing the drawing resistance, damaging the side block due to the flash, and restricting shrinkage of the slab due to the flash. Unfavorable phenomena such as surface cracking occur.

As described above, repeated use makes the casting operation difficult and the quality of the finished product deteriorates.

The present invention was made in order to eliminate the above-mentioned drawbacks, and in order to ensure the contact between the belt and the molten metal side corner of the side block in a belt type continuous casting machine,
Either the side block has a dedicated means for pressing the opposite belt part near the corner part, or the corner part of the side block has a thicker wall thickness, or the side block has the means and the wall thickness is thicker. The present invention relates to a belt type continuous casting machine characterized by the following.

Embodiments of the present invention are shown in FIGS. 5, 6, and 7.

5 and 6 show a corner presser 1 to ensure contact between the molten steel side corner O of the side block 9 and the belt 2.
2.12-a is shown.

FIG. 7 shows an example in which the wall thickness of the corner portion C of the side block 9 is increased.

In the example shown in FIG. 5, the corner presser 12 ensures that the belt 2 contacts the corner O of the side block 9. Also,
If the corner presser 12-a is moved slightly toward the corner O side as shown in FIG. 6, the belt 2 will surely come into contact with the corner C of the side block 9.

Furthermore, as shown in Fig. 7, increasing the wall thickness of the corner portion C increases the effect of pressing the belt with the corner presser 12 (9) 12-a (note that the corner presser is not shown in Fig. 7). (not shown).

-z- The force for pressing the presser foot 12.12-a against the belt 2 is adjusted by adjusting the force F shown in Figs. 5 and 6.

As described above, in the present invention, since the belt and the corner of the side block are always in contact with each other, molten metal does not get inserted and no flaking occurs, resulting in stable operation and good product quality. .

The present invention is applicable not only to molten copper but also to continuous casting of other molten metals.

[Brief explanation of drawings]

Fig. 1 is a diagram showing a conventional belt type continuous casting equipment #, Fig. 2 is a view taken along the line F-F in Fig. 1, and Figs.
5 to 7 are diagrams showing defects occurring in the device shown in the figure, and FIGS. 5 to 7 are diagrams showing an embodiment of the device of the present invention. Sub-Agent 1) Meifuku Agent Ryo Hagiwara - Figure 3 Figure 4 Figure 5 Figure 6 Garden

Claims (1)

[Claims] In the belt-type continuous casting machine, in order to ensure contact between the belt and the molten metal side corner portion of the side block, there is provided means for exclusively pressing the opposing belt portion near the corner portion of the side block, or Increasing the wall thickness of the corner portion of the side block, or having the above means and increasing the wall thickness f:,
Belt type continuous casting machine with percentage markings.