JPH04108946U - Thermal cover for high-temperature steel material being transported on a roller table - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the heat insulation effect of high-temperature steel materials by the heat insulation cover that covers the roller table. [Structure] A pair of rotatable end heat insulating plates 4 are disposed inside a heat insulating cover 1 installed above a roller 2 that conveys a high-temperature steel material 3. When a narrow high-temperature steel material 3 passes over the roller 2, the plate end heat insulating plate 4 is advanced to reduce the gap with the high-temperature steel material 3 to maintain heat, and when a wide high-temperature steel material 3 passes, it is moved back. [Effect] The temperature drop at the plate end of the high-temperature steel material 3 is suppressed,
Temperature uniformity in the board width direction can be achieved.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to a heat-insulating cover for high-temperature steel materials being transported on a roller table. be.

0002

[Conventional technology]

The high-temperature slab cast by a continuous casting machine is not heated for the rolling process. In other words, the so-called rolling process is carried out directly to the rolling process so that only a small amount of heating is required. Direct rolling is used to save energy. Such direct pressure In order to perform rolling efficiently, cooling of high-temperature steel materials such as continuously cast slabs must be prevented as much as possible. It is necessary to prevent this and maintain a uniform temperature in the width direction.

0003 Conventionally, roller tape was used to prevent high-temperature steel materials from cooling as much as possible and maintain them at high temperatures. It is known that high-temperature steel materials being transported can be kept warm by covering the top of the steel with a heat insulating cover. . For example, in Japanese Patent Application Laid-open No. 57-154361, there is a heat insulating cover that covers the roller table. It has been proposed that a heat insulator is installed in the part of the slab where the gas is cut to keep it warm. In addition, Japanese Utility Model Application Publication No. 59-77555 discloses that there are a plurality of slabs in the longitudinal direction inside the heat insulating cover. It has been proposed to suspend and arrange convection prevention curtains made of armor-type extensions. .

0004

[Problem that the idea aims to solve]

By the way, as shown in FIG. High-temperature steel materials 3 having various widths are transported. Therefore, in the conventional technology The heat insulating cover 1 covering the roller 2 has the largest width among the high temperature steel materials 3 being conveyed. Because it is designed to suit the object, it can be used regardless of whether the width of the high-temperature steel material 3 is wide or narrow. Warmth will be kept with a heat insulating cover 1 of a certain width.

[0005] In the conventional heat insulating cover 1 that completely covers the rollers 2 that make up the roller table, The heat retention effect differs between wide and narrow high-temperature steel materials 3. Especially high temperature steel material 3 The narrower the width, the further away from the side wall of the insulation cover 1, the less the insulation effect. It gets colder. In addition, the edges of the high-temperature steel material 3 are easily cooled, and the temperature can be made uniform in the width direction of the sheet. There was a problem that it became difficult.

[0006] The present invention was devised to solve the problems of the prior art, and is Whether the high-temperature steel material being conveyed on the rack table is wide or narrow, High-temperature steel material being transported on a roller table that can efficiently keep the edge of the plate warm. The purpose of this product is to provide a heat insulating cover.

[0007]

[Means to solve the problem]

To achieve the above object, the present invention is designed to A pair of movable plate end heat insulating plates are placed inside the heat insulating cover installed on the front side. The heat insulation plate at the end of the marking board is moved back when passing wide high-temperature steel materials, and when passing narrow high-temperature steel materials is moved forward to reduce the gap between the plate end heat insulating plate and the high-temperature steel material. This is a heat-insulating cover for high-temperature steel material being transported on a roller table. Ru.

[0008]

[Effect]

A movable heat insulating plate is installed at the end of the heat insulating cover installed on the roller table. This makes it easy to retreat when passing wide materials, and for narrow materials, It is possible to keep warm near the width end. Therefore, the temperature in the width direction of the high-temperature steel material is stable. degree uniformity is achieved.

[0009]

【Example】

Hereinafter, embodiments of the present invention will be described based on the drawings. Figures 1 and 2 are of the present invention. FIG. 2 is a schematic cross-sectional view showing one embodiment, in which a heat-insulating cover 1 having a U-shaped cross section is attached to a conveyor line. It is installed above the rollers 2 that make up the roller table. This thermal cover 1 allows the largest wide material 3 among the high-temperature steel materials 3 conveyed by the rollers 2 to pass through. It is designed in width.

0010 Inside the heat insulating cover 1, a pair of plate end heat insulating plates 4 are attached to the heat insulating cover 1. It is rotatably supported via a hinge 5. The hinge 5 side of the plate end heat insulation plate 4 is a lever. -8 is fixed, and a power cylinder 6 is connected to this lever 8. Figure 1 shows the situation when a narrow high temperature insulation material 3 is passing over the roller 2. In this case, the power cylinder 6 is retracted and the lever 8 is moved using the hinge 5 as a fulcrum. The plate end heat insulating plate 4 is rotated in the forward direction through the plate end heat insulating plate 4 to It is adjusted so that it is located closest to the edge of the board. For this reason, the plate end heat insulating plate 4 Therefore, cooling of the edge of the narrow high-temperature steel material 3 is suppressed, and temperature uniformity in the width direction is ensured. It will be done.

[0011] Figure 2 shows the situation when a wide high-temperature insulation material 3 is passing over the roller 2. In this case, extend the power cylinder 6 and use the hinge 5 as a fulcrum to move the lever 8. The plate end heat insulating plate 4 is rotated and retracted in the retracting direction through the plate. do it like this This ensures that the wide high-temperature steel material 3 is not obstructed while being conveyed on the rollers 2. In addition to ensuring sheet passability, the wide high-temperature steel material 3 is kept warm by the insulation cover 1. This allows for efficient heat retention.

0012 FIG. 3 is a schematic sectional view showing another embodiment, in which the plate end heat insulating plate 4 is mounted on a bearing 9. When the rotatably supported link 7 is rotated by a drive device (not shown), It moves forward and backward in the direction of the arrow while hanging from the tip of the link 7 via the pin 10. narrow When the high-temperature steel material 3 passes, the plate end heat insulating plate 4 is lowered to close the plate end of the high-temperature steel material 3. If a wide high-temperature steel material 3 passes, it should be raised and evacuated. The same heat retention effect as in the above embodiment can be obtained.

[0013] In addition, in the above embodiment, when the wide high-temperature steel material 3 passes, the plate end heat insulating plate 4 is Although we have explained things that can be rotated or moved up and down vertically to retreat, this is limited. In this invention, as shown in Figure 4, the material of the insulation plate at the end of the plate is If you use a heating cloth to hang the insulation cloth plate 4' on the edge of the plate, it will be easy to use when passing wide high-temperature steel materials. It is also possible to prevent interference and obtain the same effect.

[0014] Further, as shown in FIG. 5, a U-shaped heat insulating plate 4 is rotatably supported by a hinge 5. , which surrounds the edge of the high-temperature steel plate 3 from three sides, or as shown in FIG. L-shaped plate end attached to the advance/retreat rod 11 of the power cylinder 6 installed on both sides The heat retaining plate 4 may be moved forward and backward. Figure 7 shows the case where the plate end heat insulating plate is not installed inside the heat insulating cover and the case where the plate end heat insulating plate is installed. This figure shows a comparison of the temperature drop at the plate edge of high-temperature steel when installed. . As shown in Figure 7, the average temperature drop was 101℃ when there was no insulation plate at the edge of the plate. On the other hand, when there is a heat insulation board at the edge of the board, the average temperature drop is 79℃, and the heat retention plate at the edge of the board is As a result, the edge of the high-temperature steel plate could be raised by an average of 20°C.

[0015]

[Effect of the idea]

As explained above, according to the present invention, high-temperature steel is conveyed on a roller table. The heat retention effect at the edge of the wood board has been improved, and temperature uniformity across the width direction has been reliably achieved. , its energy saving effect is significant.

[Brief explanation of drawings]

FIG. 1 is a schematic sectional view showing an embodiment of the present invention when passing a narrow high-temperature steel material.

FIG. 2 is a schematic cross-sectional view showing the passing of a narrow high-temperature steel material in FIG. 1;

FIG. 3 is a schematic cross-sectional view showing another embodiment of the present invention when passing a narrow high-temperature steel material.

FIG. 4 is a schematic cross-sectional view showing a modification according to the present invention.

FIG. 5 is a schematic cross-sectional view showing another modification according to the present invention.

FIG. 6 is a schematic cross-sectional view showing still another modification of the present invention.

FIG. 7 is a bar graph showing the relationship between the amount of temperature drop depending on the presence or absence of a plate end heat insulating plate.

FIG. 8 is a schematic cross-sectional view showing a conventional example.

[Explanation of symbols]

1 Heat insulation cover 2 Roller table 3 High temperature steel 4 Plate end heat insulation board 4' Heat insulation cloth board at the end of the board 5 Hinge 6 Power cylinder 7 Links 8 Lever 9 Bearing 10 pin 11 Advance/retract rod

Claims (1)

[Scope of utility model registration request] Claim 1: A pair of movable plate end heat insulating plates is disposed inside a heat insulating cover installed above a roller table of a high temperature steel material conveyance line, and the plate end heat insulating plates are used when a wide high temperature steel material passes through. Heat retention of high temperature steel material being conveyed on a roller table, characterized in that it is configured to be moved backward and moved forward when the narrow high temperature steel material passes, thereby reducing the gap between the plate end heat insulation plate and the high temperature steel material. cover.