JPH0220207Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The invention relates to a coil heat retention box that makes the temperature distribution in the width direction of a sheet bar coil uniform.

[Conventional technology]

Conventionally, in equipment for winding sheet bars into coils, the technology to prevent the temperature drop of the wound sheet bar (during coiling and after it has become a coil) is to introduce the coil into a box with heating equipment. A typical example is one that heats the edges. For example, JP-A-60-115305, JP-A-Sho.
60-180601 and JP-A-52-109469 both provide a winding device or the like with a heating device for heating the coil edge.

[Problem that the invention attempts to solve]

As mentioned above, in the conventional technology, in order to solve the temperature drop at the coil edge, an external heat source is used.
It is characterized by heating the coil edge part, and thermal energy input cost is always required for coil winding, heat retention, and unwinding operations.
The construction cost is high as it requires a heating device. Furthermore, it is difficult to control the amount of heat input and the gas atmosphere inside the box.

This invention aims to maintain and equalize the heat of the seat bar coil by effectively utilizing the sensible heat of the seat bar, and provides a device that does not require the construction of combustion equipment and does not increase operational costs. The purpose is to

[Means for solving problems]

The present invention consists of a heat-insulating box that covers a sheet bar coil winding or unwinding device, and the wall plates on both sides of the box facing the coil edge are moved in the coil width direction according to the coil width. The characteristic technical means is that it is flexible.

In the present invention, a sheet bar coil winding machine is installed in a box-shaped facility, and the inner wall of the box is lined with a heat insulating material or a heat insulating material. Lining materials include hardened boards made of inorganic materials, compression molded products of inorganic fibers, non-compression molded products, lining materials with a white surface with high heat reflectance (ceramic type with poor heat conduction), or mirror-finished metal plates. A composite with a heat insulating material is suitable.

Further, the side wall facing the coil edge is formed to be movable according to the width of the coil plate, thereby forming a variable width box that controls the distance from the coil edge to a distance suitable for heat retention.

[Effect]

This invention achieves temperature uniformity of the seat bar coil by effectively and proactively utilizing the sensible heat possessed by the seat bar itself, without using heat input from the outside. By configuring the heat insulation box so that the gap in the width direction of the coil in the heat insulation space can be freely adjusted, it is possible to effectively utilize the sensible heat of the seat bar and keep the coil uniformly warm. This serves to tighten the temperature and correct uneven temperature distribution.

〔Example〕

FIG. 1 is a side view (a) and a vertical sectional view (b) of an embodiment of the present invention. 2 and 3 are explanatory diagrams showing the operation of the embodiment, in which FIG. 2 is a vertical sectional view and b plan view of the heat retention box during coil winding of the embodiment, and FIG. FIG. 6 is a vertical cross-sectional view and a plan view of a heat-retaining box for holding a coil according to an embodiment of the present invention.

To explain the structure of the embodiment shown in FIG. 1, a heat insulating box 1 consists of a heat insulating box body that covers a winding or unwinding device for a sheet bar coil 10, and its inner wall is lined with a heat insulating material 2. be.

This box has a movable wall plate 3 whose wall plate part 3 facing the coil edge surface is driven by a power device 4 consisting of a hydraulic cylinder 7, etc., and this wall plate 3 is moved between the coils and the coil according to the plate width of the coil 10. It is possible to set it in a position with an appropriate gap between the two.

The wall plate 3 facing this coil edge is supported by a two-point support roller 5, and a pressing spring 6 supports the entire surface load generated during movement. wall board 3
The peripheral edge of is sealed with a sealing heat insulating material 8.

This wall plate 3 is driven by one propulsion shaft and a hydraulic cylinder 7 connected to this shaft.

The stop position of the movable wall plate 3 after driving is set by an operation signal.

As shown in FIG. 2, a sheet bar is wound into a coil 10 or a sheet bar is unwound into a sheet bar by winding the sheet bar into a coil 10 or by unwinding the coil in a heat insulation box 1 having a coil feeder 13 for winding or unwinding and a guide roller 12. shall be. The opening/closing device 11 opens and closes the box wall upward, and can smoothly take out the coil from the heat insulation box or insert the coil by using a pusher (not shown) or the like.

The following examples of coil thermal boxes were tested on a laboratory scale.

Inner dimensions of the box: 400mmH x 400mm x 400mmW Lining: Kao Cool 50mm thick Test piece: Steel plate 100mm thick x 200mmW x 200mm The test piece was placed in the above heat insulating box at 1050℃, and the inside surface of the lining of the heat insulating box was measured. When the temperature was measured, the atmospheric temperature showed a change as shown in FIG. For each curve in Figure 4, the distance from the coil edge to the lining is A:50.
mm, B: 100mm, C: 200mm.

Next, we made a 2.7m x 1.5m x 2m coil heat insulation box, and inserted an 840W x 2000H coil heated to 1050℃ into this heat insulation box, as shown by the white circle in Figure 4. (lining coil test value).

Based on the above test results, we performed a heat retention simulation calculation for the coil and were able to predict the effect as shown in Figure 5. Each curve in Figure 5 shows that when a coil with a temperature To at the center of the coil of 1000 to 1100°C and a decreasing temperature at the coil edge is held in the coil heat retention box of the present invention, the distance between the lining and the coil edge is D: 50 each
mm, E: 100mm. F: The distribution of temperature T in the coil width direction when 200 mm is shown as a temperature ratio T/To.

In addition, in the above explanation, a heat-retaining box in a device that winds a sheet bar into a coil shape in a heat-retaining box and unwinds it after uniform heat retention has been described.
It goes without saying that the present invention is not limited to this, and can be widely adopted as a covering for the purpose of heat retaining a coil.

[Effect of idea]

According to the present invention, by simply adding a heat insulating box whose entire inner wall is lined with heat insulating material, heat insulating material, or heat reflector to the heat coil processing system, and adjusting the wall plate facing the coil edge according to the coil width,
Without using an external heat source such as an edge heater,
Since the temperature in the width direction of the coil can be made uniform using only the sensible heat of the sheet bar, there is no need for a heating device, the equipment cost is small, and the operating cost does not increase.

Moreover, the temperature in the width direction of the coil becomes uniform, and product quality in subsequent processes is guaranteed.

This device is particularly suitable for coiling and soaking of coils that have been cast using a continuous sheet bar casting machine or the like and have a large temperature distribution in the thickness direction. Such a coil is preferable because sensible heat control of the sheet bar can be performed without an external heat source such as a heating furnace, and it does not cause any disturbance to the unit heat consumption on the heating furnace side.

[Brief explanation of the drawing]

Fig. 1 is a side view and b longitudinal sectional view of the embodiment of the present invention, Figs. 2 and 3 are explanatory diagrams showing the operation of the embodiment, and Fig. 2 is a maintenance maintenance during coil winding of the embodiment. Fig. 3 is a vertical sectional view and b plan view of the heat insulating box for holding the coil of the embodiment after winding; Fig. 4 is the heat insulating box of the embodiment. FIG. 5 is a chart showing the temperature distribution in the box, and FIG. 5 is a chart showing the simulation results of the temperature distribution in the coil width direction. 1...Heat insulation box, 2...Heat insulation material, 3...Moveable wall plate, 4...Power unit, 5...Roller, 6...
Pressing spring, 7... Hydraulic cylinder, 10... Seat bar coil.

Claims (1)

[Scope of utility model registration request] A coil heat insulating box comprising a heat insulating box covering a sheet bar coil winding or unwinding device, characterized in that wall plates on both sides of the box facing the coil edge are movable according to the width of the coil.