JPH0716638A - Equipment for cooling and keeping hot rolled coil - Google Patents

Abstract

PURPOSE:To provide an equipment where a time to prepare for transferring a coil is shortened and the cooled coil is not heated in the equipment with which the hot rolled coil is cooled and kept, and delivered following to a treatment command from a next process. CONSTITUTION:A 1st and a 2nd yards 3a, 3b are formed on a side of a hot rolling line 1, the inside of each yard 3a, 3b is bisected, one side is made in an air cooling yard 4B and the other side is made in a water cooling yard 4A. A three-dimensional warehouse 5 to keep cooled coils and aligning lines 61 to 63 are installed in series on the 2nd yard 3b side, and a delivering yard 9 is formed on a conveying inlet side of the down stream side of the three- dimensional warehouse 5. A conveying carriage moving along a loop rail 81 directly connects between each cooling yard 4A, 4B of the three-dimensional warehouse 5 and the upper stream side of the aligning lines 61 to 63. A conveying carriage moving along a loop rail 82 directly connects between the three-dimensional warehouse 5, the down stream side of the aligning lines 61 to 63 and the delivering yard 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a facility for cooling hot-rolled coils, storing them and paying them out in accordance with a processing instruction from the next step.

[0002]

2. Description of the Related Art Coil that has been hot rolled is divided into a coil that is air cooled and goes to a conditioning line (hot rolled material for sale) and a coil that is water cooled and goes to a cold rolling process (cold rolled material). It is paid out according to the processing order from the process. Such equipment for cooling and storing the hot rolled coil is conventionally arranged as shown in FIG. 4, for example.

That is, the hot-rolled steel strip finish-rolled by the finish rolling mill 11 of the hot rolling line 1 is wound into a coil by the winding machine 12. The temperature of this hot rolled coil is 450 to 800 ° C.
Cooled by being distributed to 5 to 6 yards 31 to 35 in parallel
Be stored. Then, the cold-rolled material is transported to the water-cooling / storage yard 41 at one end of each yard 31-35 via the conveyor 22 and the crane K _11, and after being water-cooled, it is stored as it is or by the conveyors 22, 23, 24, It is distributed and arranged in the air cooling / storage yard 42, the storage yard 43, and the storage / shipping yard 44, and the conveyors 22 to 24 and the cranes K ₁₁ , K ₁₂ , and K ₁₃ are transferred to each other in accordance with a processing instruction of cold rolling, for example, the first, It is paid out from the other end of the second yard 31, 32 by a trailer 51 or the like.

[0004] The hot rolled material for external sales is the conveyor 22 and the cleats.
Kun₁₁Air cooling / storage yard for each yard 31-35 via
After being transported to the station 42 and cooled by air, it is stored or stored as it is.
Storage bay 43 and storage
Distributing and arranging in the shipping yard 44, processing instructions for the refining line
According to the conveyors 22-24 and crane K₁₁，
K ₁₂, K₁₃Take the skin pass line 61, pickpocket
It is carried to the cutter line 62 and the pickling line 63. Each line
The coil that has been processed in the
It is distributed and arranged in the pipe / shipping yard 44, and the conveyor 24 and
Lane K₁₂, K₁₃Be transported to the packing line 71 by
For example, trailer 5 from the end of the third and fourth yards 33, 34
It will be shipped as 2nd grade.

[0005]

However, in the above-mentioned conventional equipment arrangement, the air cooling / storage yard 42 and the storage yard 43 are adjacent to each other, or the air cooling / storage yard 42 has a coil under air cooling and is already cooled. Since coils waiting for a command from the process are placed side by side, heat from the coils being air-cooled is transferred to heat the cooled coils, resulting in a longer air-cooling time. In addition, when a processing command from the next process is issued after cooling, it is necessary to transfer a coil to the conveyor or crane and carry the coils in the order of commands, which takes a long time to transfer to the next process. In addition, it is necessary to relocate the coil within the yard or to another yard in order to carry the coil in the order of instructions, and the number of coil movements increases, causing scratches on the coil during handling, or placing the coil on a skid, etc. There is a problem in that the quality of the steel strip is impaired due to the occurrence of flaws and the like.

The present invention has been made in view of the above-mentioned problems of the prior art, and is equipment for cooling and storing hot-rolled coils and paying them out in accordance with a processing instruction from the next step. In order to provide a facility for cooling and storing a hot-rolled coil, the time required for carrying the coil is shortened, the number of times the coil is moved is small, and heat from the coil is not applied to the cooled coil during cooling. To aim.

[0007]

In order to achieve the above object, the present invention is to cool and store a hot-rolled coil,
In the equipment for paying out according to the processing instruction from the next step, among the coils, an air-cooling yard for air-cooling the coil toward the hot-rolling finishing line, a water-cooling yard for water-cooling the coil for the cold-rolling step, and a cooling A warehouse for storing the completed coils, a first transfer device that directly connects the warehouse to each cooling yard and the upstream side of the conditioning line, a downstream side of the warehouse and the refining line, and a payout yard. Provided is a facility for cooling and storing a hot-rolled coil, which is equipped with a second transfer device that directly connects the two.

[0008]

According to the present invention, since the warehouse for storing the coils cooled in the air cooling yard and the water cooling yard is provided, the cooling yard and the storage yard are separated from each other, so that the cooled coil is not heated. Further, since the warehouse, the cooling yard and the upstream side of the refining line, and the warehouse and the downstream side of the refining line and the payout yard are directly connected by a transport device, respectively, a conventional conveyor or The time required to transfer the coil can be shortened as compared with the case where the crane is connected. Furthermore, if the cooled coil and the coil waiting for the next process are stored and managed at a predetermined position in the warehouse, the number of coil movements can be reduced as compared with the conventional case.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic plan view showing the equipment of this embodiment. Two rectangular yards 3 on the side of the hot rolling line 1
a and 3b were formed in parallel, and a conveyor 21 was installed between the hot rolling line 1 and the first yard 3a so as to extend in the longitudinal direction of the yard 3a and 3b. Each yard 3a, 3b is divided into two in the longitudinal direction, and the hot rolling line 1 is formed with a water cooling yard 4A on the winder 12 side and an air cooling yard 4B on the opposite side. Cranes K ₁ and K ₂ are installed above the water-cooling yard 4A and the air-cooling yard 4B, and the water-cooling yard 4A and the air-cooling yard 4B are branched from the conveyor 21 at a right angle to the first yard 3a to the second yard. A conveyor 2a directed to 3b is installed at an end of the air-cooled yard 4B opposite to the water-cooled yard side. The conveyor 2b is bent at a right angle from the tip of the conveyor 21 and directed from the first yard 3a to the second yard 3b. .

On the second yard 3b side, the three-dimensional warehouse 5, the skin pass line 61, the slitter line 62, and the pickling line 63 are connected in series from the water cooling yard 4A side to the second yard 3 on the upstream side.
It is installed on the b side. A packing line 71 is installed downstream of the skin pass line 61 and the slitter line 62.
A conveyor 2c heading to the second packing line 71 is also installed. In addition, R ₁ is a rewinding machine on each line entry side, and R ₂ is a tension reel on each line entry side.

In addition, on the upstream side entrance / exit side of the three-dimensional warehouse 5,
Each upstream side of the skin pass line 61, the slitter line 62, and the pickling line 63, between the water cooling yard 4A of the second yard 3b and the three-dimensional warehouse 5, the air cooling yard 4B and the conveyor 2.
A loop path 81 passing between the air cooling yard 4B of the first yard 3a and the conveyor 21 and between the air cooling yard 4B and the conveyor 2b is laid. This loop track 81
And a transport carriage that can travel along it,
It corresponds to the first transfer device in the present invention.

Further, a payout yard 9 is formed on the downstream loading / unloading side of the three-dimensional warehouse 5, and a crane K is provided above it.
₃ are installed. The skin pass line 61 and the slitter line 6 are provided on the downstream loading / unloading port side of the three-dimensional warehouse 5.
2, a loop path 82 is laid on the downstream side of each packing line 71 on the downstream side, on the side of the pickling line 63, and on the side of the three-dimensional warehouse 5 of the payout yard 9. This loop track 82
And a transport carriage that can travel along it,
It corresponds to the second transfer device in the present invention.

Therefore, the hot-rolled steel strip finish-rolled by the finish-rolling mill 11 of the hot-rolling line 1 is wound into a coil by the winder 12, and the cold-rolled material is conveyed by the conveyors 21, 2a.
It is carried by a crane K ₁ and is placed in a predetermined position in the water cooling yard 4A and cooled by water. Conveyor 2 for hot rolled materials
It is carried by 1 and 2b, and the air cooling yard 4B by crane K _2.
It is placed in a predetermined position and cooled by air.

The cooled coil is loaded from the water-cooling yard 4A and the air-cooling yard 4B onto a transfer carriage that can move along the loop track 81 and is carried into the three-dimensional warehouse 5 from the upstream side loading / unloading port. Will be stored in the location.
Here, the cold-rolled material is carried to the payout yard 9 by being mounted on a transport carriage that moves along the loop track 82 from the downstream carry-in / out entrance of the three-dimensional warehouse 5 in accordance with a cold rolling processing instruction. Hot-rolled external sales materials are refined lines (skin pass line 61, slitter line 62, and pickling line 6
According to the processing instruction of 3), the skin pass line 61 is mounted on the carrier truck that moves along the loop track 81,
It is carried to either the slitter line 62 or the pickling line 63. The coil that has been processed in each line is (in the case of the pickling line 63, the slitter line 6 by the conveyor 2c).
After being transported to the second packaging line 71), it is packaged in the packaging line 71, and is transported to the payout yard 9 by the transport carriage moving along the loop track 82.

The cold-rolled material and hot-rolled external sales material carried to the payout yard 9 are transferred to the trailer 5 by the crane K _3.
It is delivered or shipped at 1,52 or the like. Further, what is sent to the refining line again is carried to the downstream side loading / unloading port of the three-dimensional warehouse 5 by the truck moving along the loop track 82 and stored in the three-dimensional warehouse 5 as a command waiting coil. Loop orbit 8 according to the processing instruction of the refining line
1 is carried to each refining line by a carrier truck moving along 1.

According to this facility, since the cooling yard and the storage yard are separated from each other by installing the three-dimensional warehouse 5, unlike the conventional case, heat is not applied to the cooled coil, so that the air cooling time is shortened and the space is small. Many coils can be stored. Further, by means of each carrier truck moving along the loop tracks 81, 82, between the three-dimensional warehouse 5, each cooling yard 4A, 4B, and the upstream side of the conditioning line, and between the three-dimensional warehouse 5 and the downstream side of the refining line. Since each of them is directly connected to the payout yard 9, it is possible to shorten the time required for the transportation as compared with the conventional case where the conveyor or the crane is connected.

The graph of FIG. 2 compares the retention days from the winding of the hot-rolled steel strip to the shipment between the equipment A of this embodiment and the equipment B of the above-mentioned conventional example (FIG. 4). Is. As can be seen from this graph, the retention days of the conventional example were 7.6 days at maximum and 3.3 days at minimum, and 5.4 days on average,
In the case of this embodiment, the maximum is 5.0 days and the minimum is 3.0 days, and the average is 3.9 days. The air-cooling time is shortened compared to the conventional case, and the time required for transportation is shortened, so that the number of stay days is significantly shortened. ing.

Further, if the cooled coil and the coil waiting for the next process are stored at a predetermined position in the three-dimensional warehouse 5, it is not necessary to rearrange the coils so as to carry them in the order of processing instructions. As a result, it becomes difficult for the steel strip to be scratched or pushed. The graph of FIG. 3 shows the number of coil movements from the winding of the hot-rolled steel strip to the shipment, the equipment A of this embodiment and the above-mentioned conventional example (FIG. 4).
It is compared with the equipment B of. Here, the number of times is counted as one movement until the coil is lifted from one position and moved to another position. As can be seen from this graph, the number of times of 11.8 in the conventional example is 5.2 times, which is less than half.

[0019]

As described above, according to the present invention, the cooled coil is stored in the facility for cooling and storing the hot-rolled coil and delivering it according to the processing instruction from the next step. By providing the warehouse, the time required for air cooling of the coil is shortened compared to the conventional case. Further, since the warehouse, the cooling yard, and the upstream side of the refining line, and the warehouse, the downstream side of the refining line, and the delivery yard are directly connected by a transfer device, respectively, they are transferred more than conventional equipment. Can reduce the time it takes. Furthermore, since the number of coil movements can be reduced as compared with the conventional case, the steel strip is less likely to be scratched or pushed.

[Brief description of drawings]

FIG. 1 is a schematic plan view showing an embodiment of the present invention.

FIG. 2 is a graph comparing the number of stay days from the winding of the hot-rolled steel strip to the shipping of the equipment A of this example and the equipment B of the conventional example.

FIG. 3 is a graph comparing the number of coil movements from the winding of the hot-rolled steel strip to the shipping of the equipment A of this embodiment and the equipment B of the conventional example.

FIG. 4 is a schematic plan view showing a conventional facility for cooling and storing a hot-rolled coil.

[Explanation of symbols]

 1 Hot Rolling Line 4A Water Cooling Yard 4B Air Cooling Yard 5 Three-dimensional Warehouse 81 Loop Track (First Transfer Device) 82 Loop Track (Second Transfer Device) 9 Delivery Yard

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yuji Komami 1 Kawasaki-cho, Chuo-ku, Chiba-shi, Chiba Kawasaki Steel Co., Ltd. Chiba Works (72) Inventor Zenichiro Kawasaki-cho, Chuo-ku, Chiba Chiba Chiba Steel Works, Ltd.

Claims (1)

[Claims] 1. A hot-rolled coil is cooled and stored,
In the equipment for paying out according to the processing instruction from the next step, among the coils, an air cooling yard for air cooling the coil toward the hot rolling finishing line, a water cooling yard for water cooling the coil for the cold rolling step, and a cooling A warehouse for storing the completed coils, a first transfer device that directly connects the warehouse to each cooling yard and the upstream side of the conditioning line, a downstream side of the warehouse and the refining line, and a payout yard. Equipment for cooling and storage of hot-rolled coils, which is equipped with a second transfer device that directly connects the two.