JPS6249124B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cooling device for high-temperature steel material, and more specifically, a hot-rolled material (strip) is cooled on a hot run table before being rolled up after leaving a rolling mill.
The present invention relates to a cooling device that controls the temperature of the strip at that time.

Generally, in continuous hot rolling equipment, the strip that has undergone finish rolling is water-cooled while running on a hot run table, and is wound up when the temperature has dropped to a predetermined temperature. The temperature at this time is determined by the product quality, and from metallurgical purposes, it is important to keep the rolling temperature appropriate, as well as the appropriate winding temperature, that is, control the temperature of the strip on the hot run table. have a significant impact on

As a cooling device for the above purpose, as shown in FIG. In this CWC, the cooled water is formed into a plate-shaped water stream 5 by a slit nozzle 4 provided at the lower part of the tank 1, and the plate-shaped water stream 5 is naturally dropped in the width direction of the strip 6 to cool it.
Conventionally, the cooling tube 7 of the (curtain wall cooling) type has been mainly used.

However, in such a cooling header 7, until the cooling water spouted from the small hole 2 of the water supply pipe 3 falls through the slit nozzle 4, the flow rate as shown by the arrow is caused by the water supply pressure, flow characteristics with an undefined direction, etc. Lateral direction within tank 1 (longitudinal direction of tank 1)
Since the water flows freely and irregularly, the thickness of the water stream 5 formed by the slit nozzle 4 is not uniform, which causes a decrease in cooling capacity.

The present invention has been made in view of the above-mentioned circumstances, and is a plate-shaped product which is provided with a water supply pipe introduced into a cooling water tank, and is made by allowing cooling water supplied from the water supply pipe to flow through a slit nozzle provided in the tank. In a cooling device that cools a material to be cooled by a water flow, at least one longitudinal end of the tank is configured to be openable and closable, and a connecting rod and a connecting rod are provided throughout the entire area below the water supply pipe position in the tank. This invention relates to a cooling device for high-temperature steel materials, characterized in that a current plate unit consisting of a plurality of current plates arranged in parallel at right angles to the longitudinal direction of a rod is arranged in a manner that can be moved in and out.

Embodiments of the present invention will be described below with reference to FIGS. 2 and 3.

In the cooling header 7 shown in FIG.
A large number of rectifying plates 8 oriented perpendicular to the longitudinal direction of the tank 1 are arranged in parallel in the longitudinal direction of the tank 1, and the outline portions of the rectifying plates 8 along the tank 1 are connected by a required number of connecting rods 9. The connecting rod 9 and each of the current plates 8 constitute a current plate unit 10, and the current plate unit 10 can be inserted into and removed from the tank 1 by removing the end cover 1' of the tank 1.

Now, with the current plate unit 10 installed in the tank 1 as shown in FIGS. 2 and 3, when cooling water is supplied into the tank 1 from the water supply pipe 3, the cooling water flows below the water supply pipe 3. It immediately flows between certain rectifying plates 8, 8, and its lateral fluidity is regulated. Therefore, the cooling water that has passed between the baffle plates 8 and 8 and flowed into the slit nozzle 4 has a uniform flow rate across the width direction of the slit nozzle 4, so that when it flows down from the slit nozzle 4, it has a uniform flow rate. The plate-shaped water flow 5 becomes thicker, and the cooling capacity is improved.

Further, in the present invention, each current plate 8 is connected to a connecting rod 9.
Since the rectifying plate unit 10 is formed by connecting the parts at
It can be easily pulled out from the inside, and therefore can be easily cleaned when limescale etc. adhere to it.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and it goes without saying that various changes can be made without departing from the gist of the present invention.

As described above, according to the present invention, the current plate unit consisting of the current plate and the connecting rod is disposed in the tank throughout the lower part of the water supply pipe so that it can be moved in and out, so that the cooling water supplied from the water supply pipe is immediately rectified. Cooling water flows between the plates and its fluidity in an undefined direction is regulated. Therefore, the same flow rate of cooling water flows in the width direction of the slit nozzle, so the cooling water flowing down from the slit nozzle flows into a plate shape with a uniform thickness. The cooling capacity can be improved by creating a water flow, and since the rectifying plate unit is configured to be able to be moved in and out,
Even if limescale, foreign matter, etc. adhere to the rectifying plate, it can be easily removed and cleaned, which provides excellent effects.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of a conventional cooling device, FIG. 2 is a partially cutaway side view of the cooling device of the present invention, and FIG.
FIG. 1...tank, 3...water supply pipe, 4...slit nozzle, 5...plate-shaped water flow, 8...straightening plate.

Claims (1)

[Claims] 1. A cooling water tank is equipped with a water supply pipe installed in a cooling water tank, and the cooling water supplied from the water supply pipe is made to flow through a slit nozzle provided in the tank, so that the material to be cooled is cooled by a plate-shaped water flow. In the cooling device, at least one longitudinal end of the tank is configured to be openable and closable, and a connecting rod and a connecting rod are arranged in parallel at right angles to the longitudinal direction of the connecting rod throughout the entire area below the water supply pipe position in the tank. 1. A cooling device for high-temperature steel, characterized in that a current plate unit consisting of a plurality of current plates is arranged so as to be freely accessible.