JPS5919524Y2 - metal plate cooling system - Google Patents

Description

[Detailed explanation of the idea] This invention relates to a cooling device for metal plates.

Conventionally, as shown in FIG. 1, after rolling a hot metal plate, the upper surface of the metal plate 1 is cooled by spray or laminar flow from an upper header 2, and the lower surface of the metal plate 1 is cooled by spray from a lower header 3. are doing.

However, when the upper surface of the metal plate 1 is cooled by spray or laminar flow, as shown in FIG.
As a result of the longitudinal end of the metal plate 1 being cooled more than necessary,
The material of the longitudinal center portion of the metal plate 1 and the longitudinal end portions of the metal plate 1 may become uneven, or cooling distortion may occur in the metal plate 1.

The main reason for this non-uniform cooling in the longitudinal direction is that in addition to being cooled by the cooling water that falls on the top surface of the metal plate 1, as shown in FIG. After falling, the metal plate 1 is further cooled by cooling water flowing over the top surface thereof.

The flow velocity of the cooling water flowing on the upper surface of the metal plate 1 increases toward the ends of the metal plate 1.

Therefore, in order to uniformly cool the metal plate, it is necessary to prevent the cooling water from flowing in the longitudinal direction of the metal plate on the upper surface of the metal plate.

From the above-mentioned viewpoint, this invention provides a cooling device that prevents the flow of cooling water in the longitudinal direction of a high-temperature metal plate. in the direction of
It is characterized by providing a plurality of cooling water flow prevention walls.

This invention will be explained by way of examples with reference to the drawings.

FIG. 4 is a perspective view of the main parts of the metal plate cooling device of this invention;
FIG. 5 is a front view showing how metal/metal plates are cooled by the cooling device of this invention.

As shown in the figure, the metal plate cooling device of this invention is arranged between an upper header 2 for spray or laminar flow installed on the upper side of the metal plate 1 in the longitudinal direction (travel direction) (in the figure). A plurality of cooling water flow prevention walls 4 are provided in a direction perpendicular to the direction (indicated by an arrow).

Note that 3 indicates a lower header 8 and a table roller.

As shown in FIG. 4, the cooling water flow prevention wall 4 is fixed to the lower end of a hanging fixture 7 fixed to a support rod 6 via a spring 5.

The spring 5 functions to absorb sudden shocks received by the cooling water flow prevention wall 4 due to warpage of the metal plate 1 or the like.

Since the cooling water flow prevention wall 4 is in contact with the hot metal plate 1, it is made of a nonflammable and highly elastic material, such as ceramic fiber.

The height of the cooling water flow prevention wall 4 may be appropriately selected depending on the thickness of the metal plate 1, the height of warpage, the amount of wear, etc., but in this embodiment, the lower end is on the top surface of the metal plate 1. The length is such that the cooling water flow prevention wall 4 can be bent in the direction of movement of the metal plate 1, maintaining close contact with the metal plate 1 and completely blocking the flow of cooling water. It is now possible to do so.

According to the cooling device for the metal plate 1 having the above configuration, the cooling water flowing from the upper header 2 to the upper surface of the metal plate 1 is completely blocked by the cooling water flow prevention wall 4, and the cooling water flows from the upper header 2 to the upper surface of the metal plate 1. It does not flow in the longitudinal direction of the plate 1.

Therefore, the temperature distribution in the longitudinal direction of the metal plate 1 is approximately constant in the longitudinal direction of the metal plate 1, as shown in FIG.
Various problems caused by non-uniform cooling are eliminated.

As shown in FIG. 2, the temperature distribution of the metal plate 1 is particularly problematic only at both ends of the metal plate 1 in the longitudinal direction, so when cooling the metal plate 1 while conveying it, In this case, it is necessary to provide a cooling water flow prevention wall 4 for each upper header 2 as in the above-mentioned embodiment, but when cooling the metal plate 1 while it is stopped, the cooling water flow prevention wall 4 must be provided near the longitudinal tip of the metal plate 1. It is sufficient to provide the cooling water flow prevention wall 4 only near the rear end.

As explained above, according to this invention, since the metal plate can be cooled uniformly in the longitudinal direction, there will be no unevenness in the material between the edges and the center of the metal plate, or cooling distortion in the metal plate. This has the extremely useful effect of eliminating the possibility of this occurring.

[Brief explanation of the drawing]

FIG. 1 is a front view showing how a metal plate is cooled by a conventional metal plate cooling device, and FIG. 2 is a front view showing how a metal plate is cooled by a conventional metal plate cooling device.
Figure 3 shows the temperature distribution in the longitudinal direction of the metal plate when the metal plate is cooled, and shows the state of flow of cooling water from the upper header on the top surface of the metal plate when the metal plate is cooled by a conventional cooling device. 4 is a perspective view of the essential parts of the cooling device for a metal plate of this invention, FIG. 5 is a front view showing the mode of cooling a metal plate by the cooling device of this invention, and FIG. 6 is a FIG. 7 is a plan view showing the state of the flow of cooling water on the upper surface of the metal plate when the metal plate is cooled by the cooling device of this invention. FIG. 3 is a diagram showing the temperature distribution in the longitudinal direction. In the drawings, 1... Metal plate, 2... Upper header 3... Lower header, 4... Cooling water flow prevention wall, 5
... Spring, 6... Support rod, 7... Hanging bracket, 8... Table roller.

Claims (1)

[Scope of Claim for Utility Model Registration] A cooling device that cools a high-temperature metal plate with cooling water from an upper header installed on the upper side of the metal plate and a lower header installed on the lower side of the metal plate. A cooling device for a metal plate, characterized in that a plurality of cooling water flow prevention walls are installed between the upper headers on the upper surface side so as to be perpendicular to the longitudinal direction of the metal plate.