JPS6129802B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention supports a continuous heating furnace disposed between a continuous casting machine and a continuous rolling mill so as to be rotatable without any support on its installation plane. Continuous casting having a mobile continuous heating furnace characterized in that an inlet at one end faces a desired strand of a continuous casting machine and an outlet at the other end faces a desired strand of a continuous rolling mill. This relates to direct rolling equipment.

As is well known, in the continuous casting method, molten metal is injected from a tundish into a water-cooled bottomless mold, a solidified shell layer is formed from the mold surface (primary cooling), and the solidified shell surface and mold surface are bonded by thermal contraction. A gap is created between the holes and the gap is pulled down to perform secondary cooling by spraying cooling water.It is possible to obtain a homogeneous product with high productivity, the yield is very good, and the work environment is good. Practical use is rapidly progressing due to improved performance and labor savings.

However, if such continuous casting equipment is constructed as a series of equipment including a rolling device, if one part breaks down, the entire line must be stopped and repaired, and if the roll shape is changed, it is difficult to restart the line. There are drawbacks such as time consuming and large losses due to these.

The present invention aims to improve the above-mentioned drawbacks as much as possible, and an embodiment thereof will be explained below with reference to the drawings. 3a, 3b, 3c are water-cooled bottomless molds at the bottom of the tundish, 4, 4... are secondary cooling spray devices continuing below the tundish, 5 is a pinch roll, 6
A, 6b, and 6c are continuous cast pieces drawn from this. 7a, 7b, 7c are cutting devices for this continuous cast piece;
8a, 8b, and 8c are switching tables arranged next to the cutting device, and the switching tables have a pivot 9 on the base end side.
The other end side is supported by the fluid cylinder 10.
The fluid cylinder 1 is supported by a piston rod of
0 is activated, the tips move up and down, and when the switching tables 8a, 8b, 8c are supported downward, the tips are placed in the dummy par storage devices 11a, 11b, 11c located downstairs. I'm trying to connect them. 12a and 12b are long continuous heating furnaces, and 13a, 13b, 13c, and 13d are rolls of a continuous rolling mill. In the equipment shown in this embodiment diagram, the continuous casting machine has three strands, and the continuous rolling machine has four strands. Therefore, the two continuous heating furnaces 12a and 12b are supported on the equipment plane so that they can rotate freely without a specific fulcrum.
The inlet 14 at one end faces the desired strand of the continuous casting machine, and the outlet 15 at the other end faces the desired strand of the continuous rolling mill.
That is, a portal-shaped support beam 16 is constructed near the entrance of the continuous heating furnaces 12a, 12b so as to cross the upper part of the heating furnace in the width direction, and rails 17, 17 are provided on this, and the support beam 16 is suspended from the heating furnaces 12a, 12b. A frame 18 is fixed, and the upper end of a hanging shaft 19 protruding from the center of the hanging frame 18 is rotatably supported on a guide wheel 20.
Wheels 21, 21, . . . provided on both sides of the rails 17, 21, . On the other hand, near the exits of the heating furnaces 12a and 12b, a receiving frame 22 is provided from below, and a ball 24 is rotatably held in this receiving frame 22 so as to freely roll on an installation plane 23.

Therefore, if the heating furnaces 12a and 12b are positioned as shown by the solid lines in FIG. 2, one of the continuously cast pieces 6a passes through the heating furnace 12a, is heated to a predetermined temperature, and is sent to the rolls 13a of the continuous rolling mill. The other continuously cast piece 6c passes through the heating furnace 12b, is heated, and is sent to the rolls 13d of the continuous rolling mill. Moreover, if these heating furnaces 12a and 12b are rotated on their installation plane as shown by the two-dot chain line in FIG.
a to the roll 13b, and the continuous cast piece 6c to the roll 13c.
Further, the preliminary strand continuous cast piece 6b can be sent to the roll 13a or roll 13b in the heating furnace 12a, or the continuous cast piece 6b can be sent to the continuous cast piece 6b in the heating furnace 12b.
It is also possible to send it to roll 13c or roll 13d.

In this way, in the present invention, by arranging the continuous heating furnace between the continuous casting machine and the continuous rolling machine so that it can rotate freely in any direction, the continuous slabs sent out from the continuous casting machine can be continuously rolled. Since it is possible to feed freely into any of the multiple strands in the rolling mill, if one strand of the continuous rolling mill does not fit the continuous slab due to shape or physical reasons, or if it breaks down, etc. The continuous slab can be easily switched to other strands for rolling. In addition, since continuous slabs can be fed from any of the multiple strands of the continuous casting machine to a specific strand of the continuous rolling mill, even if one strand of the continuous casting machine is stopped due to a failure, the line This has extremely beneficial effects industrially, such as being able to operate efficiently without having to suspend all operations.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a schematic vertical sectional view, FIG. 2 is a plan view thereof, FIG. 3 is a sectional view taken along the line X--X of FIG. 1, and FIG. Y in Figure 1
-Y line sectional view. 6a, 6b, 6c... Continuous cast piece, 12a, 12
b... Continuous heating furnace, 13a to 13d... Rolls of continuous rolling mill, 14... Inlet, 15... Outlet.

Claims (1)

[Claims] 1. In continuous casting and rolling equipment where both the strands of the continuous casting machine and the strands of the continuous rolling mill are plural, a long continuous heating furnace is placed between the continuous casting machine and the continuous rolling machine to heat the continuous slab. By supporting the continuous heating furnace so that it can pivot freely on its installation plane, the inlet at one end of the continuous heating furnace faces the desired strand of the continuous casting machine, and the outlet at the other end faces the desired strand of the continuous rolling mill. A direct rolling equipment for continuous casting having a mobile continuous heating furnace configured to face a strand of.