JPS60257949A - Horizontal and continuous casting machine - Google Patents

Abstract

PURPOSE:To provide a titled casting machine which simplifies an installation by casting the molten metal from a tundish into billets by plural horizoatal molds and rolling down and drawing the billets supported to one support roll provided with calibers by means of one pinch roll pair with calibers. CONSTITUTION:The molten metal is cast to the red hot billets 7 by the plural water-cooled molds 5 in contact with the nozzle 6 of the tundish 1. The billets 7 are supported by one support roll 3 with the calibers and are rolled down and drawn by the secondary pinch roll pair 4 provided likewise with the calibers 9. One unit of installation is just required and the installation is simplified, while the billets are heretofore treated with plural units of the support rolls and pinch roll pairs.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a horizontal continuous casting machine, and more particularly to a horizontal continuous casting machine capable of simultaneously casting a plurality of slabs.

[Prior art and its problems]

Continuous casting machines pass the molten steel in the ladle through the tundish.
It is poured into a mold inside a jacket through which cooling water flows, and when only the surface layer of the slab solidifies, it is immediately drawn out to a water spray zone for cooling, and then passes through a cooling zone to complete solidification to the center of the slab. Then, a cast slab is obtained. The slab formed in the mold is pulled out of the mold by pinch rolls while being guided by support rolls, and is delivered to a cutting device where it is cut into a predetermined length.

By the way, in the case of small cross-section slabs, casting is difficult with a vertical continuous casting machine because the tundish nozzle between the tundish and the mold quickly clogs.
In a horizontal continuous casting machine in which the tundish and the mold are directly connected by a front nozzle and a supply nozzle, the front nozzle and the like are less likely to become clogged, and casting is relatively easy.

However, when performing continuous casting of slabs on an industrial scale,
Due to the temperature drop of molten steel in the tundish, the
Casting must be completed within minutes, preferably within 60 minutes. Therefore, in order to cast a small cross-section slab with a small weight per unit length, for example, a slab of 100 d or less, a horizontal continuous casting machine equipment having a large number of strands is required. However, providing a continuous casting machine with a plurality of sets of casting equipment such as molds, support rolls, and pinch rolls requires a large amount of cost for the equipment itself, and also increases running costs. for that,
Conventionally, it has not been possible to cast small cross-section slabs at low cost by continuous casting.

[Purpose of the invention]

In view of the above-mentioned current situation, the present invention provides a horizontal continuous casting machine that can simultaneously cast multiple small-section slabs without having to separately install multiple sets of casting equipment consisting of molds, support rolls, and pinch rolls. The purpose is to

[Summary of the invention]

The horizontal continuous casting machine of the present invention includes a plurality of horizontal molds each connected to a tundish through a horizontal nozzle, and a reservoir jacket that accommodates the plurality of molds and cools each of the molds. a 1-rim horizontal support roll supporting and guiding each of the slabs, the caliber being in contact with each of the slabs cast in the mold is provided along the axial direction; A caliber that abuts each of the slabs guided by a support roll is provided along the axial direction, and by rolling down and rotationally driving each of the slabs, each of the slabs is moved into the mold. It is characterized by having a pin roll consisting of an upper roll and a lower roll in the horizontal direction for pulling out from each roll.

[Structure of the invention]

3- The present invention will be explained below with reference to the drawings.

FIG. 1 is a plan view schematically showing an embodiment of the horizontal continuous casting machine of the present invention, and FIG. 2 is a side view of the same.

In Figures 1 and 2, 1 is a tundish into which the molten steel in a ladle (not shown) is transferred, 2 is a jacket for accommodating and cooling the mold into which the molten steel is cast, and 3 is the slab that is cast in the mold. support rolls to support and guide;
Reference numeral 4 denotes a pinch roll for rotationally driving the slab guided by the support roll 3 and pulling it out of the mold.

As shown in the figure, two horizontal molds 5 are housed within the mold jacket 2.
each of the tundishes 1 by horizontal nozzles 6
is connected to the bottom of the

The support roll 3 is provided with two calibers 8 along the axial direction for abutting and supporting the two slabs 7 cast in each of the molds 5.

Similarly, the upper roll 4a and the upper and lower rolls 4b constituting the bench roll 4 are provided with a caliber 9 in the axial direction for contacting and biting into the two slabs 7 guided by the support roll 3. There are two located along the

The upper roll 4a of the pinch roll 4 is attached to the lower part of the frame 1 which is swingably installed at the upper part of the machine frame 10,
The two calibers 9 are lowered by a cylinder 12 installed between the frame 11 and the lower part of the machine frame 10, brought into contact with the two slabs 7, and are pressed down and engaged. The lower roll 4b is rotated by a motor 14 attached to one end of the shaft 13 of the lower roll 4b, and drives the two slabs 7 caught between the upper roll 4a and the lower roll 4b.
It is adapted to be pulled out from each mold 5.

Therefore, in this horizontal continuous casting machine, two slabs can be cast without providing two separate sets of casting equipment each consisting of a mold, a support roll, and a pinch roll as in the conventional case.

Nao? , f? -) Lower roll 4a and lower roll 4b of roll 8 and pinch roll 4, as shown in FIG.
When the structure is such that a larger caliber 17 is provided between two calibers 1.6 and 16 provided along the axial direction of the roll 15, these 1-rolls, the upper roll of the pinch roll, and the lower roll are 2 without replacing
It becomes possible to guide and pull out not only one cast piece 7 but also a larger piece 18 cast in a mold.

〔Effect of the invention〕

Since the present invention is configured as described above, unlike a conventional horizontal continuous casting machine, it is not necessary to separately install multiple sets of casting equipment consisting of molds, support rolls, and pinch rolls, and the equipment is similar to conventional casting machines. It becomes possible to cast multiple slabs at the same time without significantly changing the equipment.

[Brief explanation of drawings]

FIG. 1 is a plan view conceptually showing an embodiment of the horizontal continuous casting machine of the present invention, FIG. 2 is a side view, and FIG.
FIG. 2 is a front view showing another example of the structure of the support roll and pinch roll used in the casting machine of FIGS. In the drawing, 1...Tandish 2...Jacket 3...-!
;l-, ]e -1-roll 4...pinch roll 4
a. Upper roll 4 b. Lower roll 5... Mold 6. ... Nozzle 7.18... Slab 8 , 9 , ] 6 , 17
... Caliber] O machine frame 11 ... Frame 12 ... Cylinder -3 ... Shaft 14 ... Motor -5 - Roll applicant Natsuo Shioya (and 2 others) Agent of Nippon Kokan Co., Ltd. 1゜

Claims (1)

[Scope of Claims] A plurality of horizontal molds each connected to a tundish via a horizontal nozzle, a jacket for accommodating the plurality of molds and cooling each of the molds; A caliber that abuts each of the slabs cast in the mold is provided along the axial direction, and a horizontal support roll that supports and guides each of the slabs, and is guided by the support roll. A caliber abutting each of the slabs is provided along the axial direction, for pulling each of the slabs out of each of the molds by compressing and rotationally driving each of the slabs. ,
1- A horizontal continuous casting machine comprising a pinch roll consisting of a horizontal upper roll and a lower roll.