JPS62296907A - Hot run table device - Google Patents

Abstract

PURPOSE:To reduce the installation area with a compact device composition, to shorten the plate passing time and to improve the productivity by storing in a loop shape the strip of under transfer by a fixed looping roller and looping roller by actuating a lift device. CONSTITUTION:The rolling speed of a hot finish rolling mill is increased upto the necessary rolling speed after the tip of the strip 12 transferred by a stationary transfer roller 16 and lifting looping roller 20 reaching to a winding machine. The lifting looping roller 20 is moved to the upper part by a lift device and the strip 12 is subjected to a looping long in the upper and lower directions on the stationary transfer roller 16. Each header 52 for water cooling of a mobile water cooling device 44 is moved so as to locate to the lower part position of the lifting looping roller 20 from the lower part in order according to this looping motion and the cooling water is injected from the header 52. Also according to this cooling water injection of the header 52 the cooling water is injected in accordance with the looping state of the strip 12 from the header for cooling water of the stationary water cooling device 44.

Description

[Detailed description of the invention]

3. Detailed description of the invention

[Industrial application field]

The present invention relates to a hot run table device, and more particularly to an improvement in a hot run table device that conveys a strip rolled in a hot finishing mill to a winder.

[Conventional technology]

A hot rolling facility for rolling 'R'j steel strip and gold steel strip includes, for example, as shown in FIG. a winding machine 3 for winding the strip 1 into a coil shape; a hot run table 5 comprising a large number of conveying rollers 4 for conveying the strip 1 rolled by the R final stage rolling tLt 2 A to the winding machine 3; This bot run table 5
a water cooling device 6 of the strip 1 installed in the vertical direction;
It is equipped with The water cooling device 6 is composed of a large number of water cooling headers 6A divided in the traveling direction of the strip 1. This water cooling device 6 cools the strip 1 based on detection signals from a thermometer 7 installed on the exit side of the R final rolling 112A and a thermometer 8 installed on the input side of the winding IIM 3. It is controlled to adjust the material. In such conventional hot rolling equipment, finishing mill 2
The strip 1 rolled by the final stage rolling [2A is
500-6001/Win depending on hot run table 5
The sheet is passed through the sheet at a speed of , and is cooled by the water cooling device 6 during this sheet passing. The tip of the strip 1 is connected to the winder 3
After reaching this point and being completely wound around this winding 813, the rolling speed of the finishing mill is increased to its maximum speed because there is no need to take into account the occurrence of accidents such as strip clogging during strip passing. As the rolling speed by the finishing mill 2 increases, the temperature of the strip 1 is cooled and controlled by the water cooling device 6 in accordance with the increase in the rolling speed. This strip 1
Specifically, the cooling control is carried out to reduce the material temperature on the mill outlet side, which is usually 800 to 900 degrees Celsius, to 550 to 7 degrees Celsius on the input side of the winder 3.
The temperature is controlled at 50°C. Such water-cooled B place 6 and hot run table 5 are described, for example, in "Recent Advances in Hot Strip Equipment and Manufacturing Technology in Japan" (edited by the Iron and Steel Institute of Japan, September 1978).
As disclosed in the publication (published on May 20th), its length extends from 150 to 200 meters.

[Problems to be solved by the invention]

By the way, in the finishing mill of conventional hot rolling equipment, the maximum speed of the mill is 1500 to 1600 i/si.
Even though it reaches n, when the strip is passed until the tip of the strip is wound on the winder, the winding speed is 500 to 60.
The rolling speed is limited to about 0m/1n. this is,
When rolling thin strip steel, etc., if the rolling speed is higher than that during threading, the frequency of strip clogging and poor wrapping accidents during threading increases due to the floating of the tip of the strip 1. It depends. Therefore, in order to prevent strip clogging and other accidents, the rolling speed is set at 500 to 600.
01/1nPi! There is a problem in that productivity cannot be improved if the presser foot is not used at all. Note that when the hot run table and cooling device are configured to be short in order to shorten the strip passing time, a new problem arises in that the strip cannot be cooled sufficiently, making it difficult to adjust the material. Further, since the conventional water cooling device 6 is installed along the hot run table 5, it becomes long and has a problem that its area efficiency is reduced. Therefore, the foundation, building, etc. that house the water cooling device 6 and the hot run table 5 are required to be very large, which poses a problem in that equipment costs increase.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned conventional problems, and provides a hot run table device that can reduce the installation area due to a compact device configuration, and can shorten sheet threading time and improve productivity. The purpose is to

[Means to solve the problem]

The present invention provides a hot run table device for conveying strips rolled in a hot finishing mill to a winder, including a plurality of fixed conveyance rollers for conveying the strips, and a strip pass line above each of the fixed conveyance rollers. a plurality of fixed looping rollers installed spaced apart in the strip pass line direction, and installed below the strip pass line at a position of the fixed looping rollers in the strip pass line direction;
An elevating looping roller that is movable substantially vertically to a predetermined position above the fixed looping roller, and an elevating device that raises the elevating looping roller to a predetermined height, the tip of the strip being wound up. The above object is achieved by activating the elevating device after winding on the machine and storing the strip being conveyed in a loop shape using the fixed looping roller and the elevating looping row.

[Effect]

In the present invention, by raising the elevating looping roller to a predetermined height after the tip of the strip on the fixed conveyance roller is wound around the winding machine, the elevating looping roller and the fixed looping roller are moved onto the fixed conveying roller. strips can be stored in long loops in the vertical direction. As a result, the device configuration can be made more compact than a conventional hot run table having a linear conveyance path. Therefore, the installation area can be reduced, and accompanying equipment can be made smaller. Furthermore, since the hot run table for conveying the strip can be made compact, its overall length can be shortened. As a result, the time required for the strip to pass until the leading end of the strip is wound up by a winding machine can be shortened, and productivity can be improved. [Examples] Examples of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 to 5, this embodiment uses a hot run table device that conveys a strip 12 rolled in hot finish rolling B110 to a winder 14, in which a plurality of fixing devices convey the strip 12. A conveyance row 516, a plurality of fixed looping rollers 18 each installed at a distance in the strip pass line direction above the fixed conveyance roller 16, and a position between the fixed looping rows 518 in the strip pass line direction. , an elevating looping roller 20 that is installed below the strip pass line and is movable substantially vertically to a predetermined position above the fixed looping row 518; Said lifting looping row 5
It is equipped with elevating devices 22 and 3 for elevating 20 to a predetermined height H. The fixed conveyance roller 16, the fixed looping roller 18, and the elevating looping roller 2o are each equipped with a motor that drives each of these rollers individually. These motors are rotationally controlled by a control device (not shown) depending on the traveling speed of the passing strip 12 and the loop group of the passing strip 12. The elevating looping roller 20 is connected to each fixed conveyance row 51.
It is located between 6. Therefore, the fixed conveyance roller 16
and the lifting looping rollers 20 are arranged alternately in the traveling direction of the strip 12. As shown in FIG. 3, the lifting device 22 includes a movable frame 24 that horizontally supports the lifting looping roller 20.
Then, the chain 26 that suspends and supports this movable frame 24, and this chain 26 winds I! ), and a moving motor 32 that rotates the sprockets 28 integrally through a synchronized shaft 30. In addition, the reference numeral 34 in the figure is a bearing that horizontally pivots the lifting looping roller 2o on the movable frame 24, 3G is a drive motor that drives the lifting looping roller 2o, and 38 is a bearing that supports the sprocket 28 horizontally. Each bearing is shown. The hot run table device including the fixed conveying row 516, the fixed looping row 518, and the lifting looping roller 20 includes the strip 12 conveyed by the fixed 1 m feeding roller 16 and the R lowering looping roller 20, the fixed looping roller 18, and the lifting looping roller 20. A water cooling facility 40 is provided for cooling each strip 12 looped by. This water cooling equipment 40 includes a water cooling device 42 installed below the fixed conveyance roller 16 and the lifting looping roller 20,
When the vertical fixed water-cooled HH 44 provided vertically above the fixed looping roller 18 and the elevating looping row 520 are lifted upward by the elevating device 22, within the locus of movement of the lifted elevating looping roller 20. Vertical mobile water cooling device 46 located vertically
It is composed of. The fixed water cooling device 44 and the mobile water cooling device 46 are vertically divided into a plurality of water cooling headers 52. These divided water cooling headers 52 are configured such that the amount of cooling water sprayed is controlled according to the vertical position of the vertical looping roller 20 . The mobile water cooling device 46 is connected to the lifting looping roller 2.
0, a moving rail 48 is horizontally moved from a direction parallel to the axial direction of the elevating looping roller 20 to a lower position as the elevating looping roller 520 rises;
A wheel 50 guided by the moving rail 48, a water cooling header 52 on which the wheel 50 is mounted, and a moving device that moves the water cooling header 52 in a direction parallel to the axial direction of the elevating looping roller 20. (not shown). The moving vJ device includes, for example, a drive motor that rotationally drives the wheels 5o. This moving device is configured to move each corresponding water cooling header 52 to a position below the elevating looping row 520 or retreat from the position, depending on the elevating position of the elevating looping roller 20. That is, when the unloading looping roller 2o rises,
The moving device a moves the water cooling header 52, which is located below the rising row 520 and to the side of the moving trajectory of the roller 2o, from the lower one in order to position it at a lower position within the moving trajectory of the roller 20. It is configured to move sequentially. Further, when the elevating looping roller 520 descends, the moving device moves so as to retract the water cooling header 52 located below the elevating looping roller 20 within the movement trajectory to the side of the movement trajectory. It is composed of Next, the operation of this embodiment will be explained. First, a strip 12 rolled by a hot finishing mill 10
During strip passing until the leading end of the strip 12 reaches the winder 14, the strip 12 is conveyed by the fixed conveyance row 516 and the elevating looping roller 20. The strip 12 passing through at this time includes a water cooling device 42 and a fixed water cooling device 4.
It is cooled by a water cooling header 52 at the bottom of No. 4. After the leading end of the strip 12 conveyed by the fixed conveyance roller 16 and the elevating looping roller 20 reaches the winder 14, the rolling speed of the hot finishing mill 10 is increased to a required rolling speed. As the rolling speed increases, the elevating looping roller 20 is moved upward by the elevating device 22, whereby the strip 12 is vertically looped for a long time on the fixed conveying row 516. With this looping operation caused by the rise of the elevating looping row 520, each water cooling header 52 of the movable water cooling device 46 is sequentially moved from below to a position below the elevating looping roller 20. After this movement is completed, cooling water is injected from the water cooling header 52. Further, in conjunction with the injection of cooling water from each water cooling header 52 of the mobile water cooling device 46, cooling water is also injected from each water cooling header of the fixed water cooling device 44 according to the looping state of the strip 12. Note that the strip 1 due to this water cooling film width 40
The cooling control in step 2 is performed so that the strip 12 becomes the target material. According to this embodiment, a plurality of fixed looping rollers 18 are installed above the fixed conveyance row 516 and are spaced apart from each other in the strip pass line direction, and a plurality of fixed looping rollers 18 are provided at positions between the fixed looping rollers 18 in the strip pass line direction. hand,
The strip 12 on the fixed conveyance row 516 is lengthened in the vertical direction by the lifting looping loop 0-2o, which is installed below the strip pass line and is movable substantially vertically to a predetermined position above the fixed looping row 518. Can be stored in a loop. Therefore, the length of the strip pass line can be shortened compared to a conventional hot run table in which the strip pass line is horizontal. For example, the distance required to cool the strip 12 is approximately 150 mm.
Assuming that it is a+, according to this embodiment, the strip 12 of about 150 m can be stored by setting the vertical movement ff1H of the movable looping roller 2o to 15 m and the storage R day to 10 strands. Therefore, it is only necessary to raise and lower five moving looping rows 520,
The horizontal distance required to install these rollers 20 is at most 10 m.
It's a good thing to some extent. As a result, the length can be shortened by about 100 m or more even considering the width of the front and rear attached membranes. Since the hot run table can be shortened in this way, the strip 12 rolled by the hot finishing mill 10 can be shortened.
The time required for passing the strip 12 to be conveyed to the winder 14 can be shortened, and the productivity of steel strips and the like can be improved. In addition, since the length of the conveying equipment that conveys the strip 12 to the winder 14 can be shortened, accidents such as strip clogging during threading due to floating of the tip of the strip 12 during threading can be prevented. Even when the sheet threading speed is lowered to a safe speed, the sheet threading time can be shortened. Therefore, productivity can be improved while preventing accidents such as strip clogging during sheet threading. In addition, since the length of the strip conveyance equipment can be shortened, the foundation on which the strip conveyance equipment is installed and corner strip equipment such as the 11-store can be made smaller. This makes it possible to improve area efficiency and reduce equipment costs. Next, the implementation results of this example will be explained in comparison with the conventional one. The length of the conventional strip conveying equipment is 2oOI11,
An example in which the length of the strip conveyance equipment of this embodiment is 30 m will be explained. The rolling conditions were: thickness: 3 n, width: 15,001 m, coil Tia: 40 t. (7) When rolling the material, the threading speed was 50,011/min.
The maximum speed during rolling was 130 Qi/l1in, and the rolling pitch between coils was 60 seconds. As a result, with conventional equipment, I! ! Since the length of the two-feeding facility is 200 m, the sheet passing time is 24 seconds, and the manufacturing weight during that time is approximately 7 tons. Also, when rolling the remaining 33t, the highest iIS! When rolling was performed at an i speed of 130Qm/1n, the rolling time was 43 seconds. Further, since the rolling pitch between each coil is 60 seconds, the loss time is 60 seconds. Therefore, the time required to roll one coil is approximately 127 seconds.
Converting this to production capacity per hour is approximately 1130 tons.
becomes. On the other hand, in this example, since the quality of the strip conveying equipment is 30 IIl, the strip passing time is 4 seconds, and the manufacturing weight during this time is about 1 t. or,
For rolling the remaining 39t, the rolling speed was increased to 130001
/sin, the rolling time is 52 seconds. Further, the rolling pitch between each coil was 60 seconds. Therefore, 1
The time required to roll a coil of ff1fa40t is approximately 112 seconds, and when converted to production weight per hour, it is approximately 1240t. Therefore, it can be seen that the production capacity of this example could be improved by about 10% compared to the conventional one.

【Effect of the invention】

As explained above, according to the present invention, it is possible to compact the conveying equipment for strips rolled in a hot finishing mill, and to improve productivity by shortening the strip passing time. It has the excellent effect of being able to

[Brief explanation of drawings]

FIG. 1 is a side view showing the device configuration of an embodiment of the hot run table device according to the present invention, FIG. 2 is a side view showing the strip looping state in the same embodiment, and FIG.
FIG. 4 is a front view showing the lifting device in the same embodiment, and FIG. 5 is a front view without showing the mobile water cooling device in the same embodiment.
Similarly, FIG. 6 is a side view showing the mobile water cooling device, and FIG. 6 is a side view showing the equipment arrangement on the exit side of a conventional hot finishing rolling mill. 10... Hot rolling mill, 12... Strip,
14... Winder, 16... Fixed conveyance roller, 18... Fixed looping roller, 20... Lifting looping roller, 22... Lifting device, 40... Water cooling equipment, 4
2.44.46...Water cooling device. Agent Kei Matsuyama Yuko Yaron

Claims (1)

[Claims] (1) In a hot run table device that conveys a strip rolled by a hot finishing mill to a winder, there are a plurality of fixed conveyance rollers that convey the strip, and each roller is spaced apart in the strip pass line direction above the fixed conveyance rollers. A plurality of fixed looping rollers installed as a strip pass line, and a position between the fixed looping rollers in the strip pass line direction, installed below the strip pass line, and up to a predetermined position above the fixed looping rollers in an approximately vertical direction. The strip includes an elevating looping roller that is movable and an elevating device that raises the elevating looping roller to a predetermined height, and after the tip of the strip is wound around a winder, the elevating device is operated to fix the strip. A hot run table device characterized in that the strip being conveyed is stored in a loop shape using a looping roller and an elevating looping roller.