JPS59179202A - Casting rolling device for rolling continuous casting material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a casting and rolling apparatus for rolling continuous cast material by utilizing the casting heat and advantageously by using a high-speed deforming roll stand as a pre-rolling mill. The present invention relates to a type in which a storage furnace for storing continuous casting material is disposed between the pre-rolling mill and the continuous casting device δ.

As is well known, combining the continuous casting equipment and the rolling mill into one production system has several advantages, such as the ability to use the casting heat held in the semi-finished product for the rolling process. There are many things that can be mentioned. This makes it possible to achieve significant savings in the required heating energy.

For efficient integration of this continuous casting device and the rolling mill, it is necessary that the production capacities of both parts of the device correspond to each other. In this case, the rolling mill must always have some extra production capacity to prevent the production line from being blocked.

However, in this case the difference in efficiency between the continuous casting equipment and the subsequent rolling mill was always a problem. A particularly advantageous relationship in this case is that the deforming roll stand is arranged in the continuous casting device with a suitably low entry speed. More examples like this! The high-speed deformation roll stand, which is a 1L star-shaped inclined rolling mill, has the advantage of extremely high cross-sectional reduction aisles that allow reductions up to 90 rolls, i.e. 10 times the rolling length in one continuous rolling process. It is possible to This makes it possible to use billets with larger diameters than previously possible, so that the continuous casting apparatus can also be designed for larger casting cross sections. Also, for example, a high-speed deformation roll sp as a pre-rolling mill for a subsequent wire rod or fine iron rolling mill.
By using the first node? This makes it possible to improve production rates due to good temperature distribution from the source to the final product and reduced scale loss. In addition, inspection of semi-finished products becomes unnecessary.

One disadvantage of the integration of continuous casting equipment and rolling mill into one production unit that needs to be overcome is that interruptions in operation in the rolling mill are forced to have a reaction in the continuous casting equipment. . Such operation interruptions may occur for a short time, for example, when the caliber is replaced or a malfunction occurs, or for a relatively long period of time when unexpected damage occurs to the rolling mill. In such a case, the storage furnace located between the pre-rolling mill and the continuous casting unit will no longer be able to accept any semi-finished products to be subsequently produced, which will cause significant damage to the entire unit. obtain.

It is therefore an object of the present invention to solve the above-mentioned drawbacks and problems by improving the casting and rolling mill of the type mentioned at the outset and forming a buffer zone between the rolling mill and the continuous casting machine together with a storage furnace. However, this area can be used to compensate for short-term or long-term malfunctions or interruptions of the rolling mill.

In order to solve this problem, according to the invention, the storage furnace is designed for hot and cold charging, each with its own orthogonally transportable conveyor for each type of charging. Each of the conveying mechanisms can be operated jointly or separately from each other, and a cooling bed for storing the continuous casting material is provided between the continuous casting device and the storage furnace. is proposed.

By using a storage furnace with two conveying mechanisms that can be actuated independently of each other, a significantly larger storage capacity is created than in previously known storage furnaces, since in the continuous production the continuous casting This is because the material can be cooled on the cooling bed and the cold material can be sent back into the storage furnace for reheating. This process is especially designed for long interruptions, ie it is not envisaged that the production of the continuous casting apparatus will be interrupted even in these cases.

According to another embodiment of the invention, said transport mechanism consists of two walking beam conveyors arranged successively in the transport direction, at least one of said two in the general transport direction. It is advantageous if it is reversible. With this arrangement, the continuous casting material can be stored for a short time in one of the conveying mechanisms 2 by changing direction inside the storage furnace, and can be sent back to the production line (/rC) by the next change in conveying direction. -1, it is even more advantageous for these transport mechanisms to be arranged on both sides of the supply device for the hot M charging reservoir.

Furthermore, according to an advantageous embodiment of the invention, a receiving grid is provided for the cold feeding of the storage furnace, the receiving grid having a supply roll gang towards the charging opening in one plane of the storage furnace. Advantageously, the cold feed reservoir is connected to the end of the reversible conveying mechanism via the cold feed reservoir. This allows the cooled continuous casting material to be loaded from the side at one end of the storage furnace and transported directly from the continuous casting equipment during one general feed within this furnace over a reversible conveying mechanism. It can be heated at the same temperature as the continuous casting material that is hot charged into the storage furnace.

Furthermore, it is advantageous if the length of the conveyor 11 is designed so that the same furnace capacity can be achieved during cold charging as during hot charging.

The invention will now be explained with reference to the illustrated embodiment.

In the illustrated diagram j, a separating device 2 is arranged downstream of the continuous casting device 1 . The continuous casting material transferred in the right angle direction ω1 at point 3 is passed through the roll gang 4 in a hot state,
It is fed into the storage furnace 5 through a charging opening 6 located approximately in the center of the side of the storage furnace 5. Further, at point 3, a direction-changeable cooling bed 7, which will be described later, is arranged on one side of the roll gang 4.

The storage furnace 5 is divided into two regions (1) and (2), each of which is assigned a transport mechanism consisting of a walking beam conveyor of known construction. Within range 1, the continuous casting material is conveyed step by step by this walking beam conveyor towards the outlet 8 of the storage furnace 5, ie from the center of the storage furnace towards the lower end as seen on plane M.

The continuous cast material then leaves the storage furnace 50m port 8 on top of the roll gang 9, having the necessary temperature for the rolling operation in the high-speed deformation roll stand rlo. In this case, the high-speed deformation roll stand 10 is arranged as a pre-rolling mill for a subsequent wire rod or fine iron rolling mill (not shown).

In region H of storage furnace 5 a walking beam conveyor is also arranged, which can work together with the conveyor in region 1, ie in the same direction, or in exactly the opposite direction, ie from the center of storage furnace 5]. It is also possible to carry out the conveyance to the second end as seen on the 21st plane. The end of this storage furnace (
A charging opening 11 is formed on the side of area 1■).
A receiving grid 12 and an associated supply roll gang 3 are arranged in front of this charging opening. And this receiving grid 1
On 2, the cold, glistening continuous casting material is guided directly into the storage furnace 5 and conveyed via the walking beam conveyor in the area 1■ towards the center of the furnace, where it is received by the walking beam conveyor in the area ■. Furthermore, exit 8
It is transported by rail. During this movement of areas 1 and 1 of the storage furnace 5, the cold continuous casting material is again heated to the required rolling temperature.

Next, the mode of operation of the device according to the invention will be described.

During normal operation, the continuous casting production volume and the rolling production volume match. The semi-finished product produced by the continuous casting material 1 is moved at right angles at a point 3, is introduced onto a roll gang 4 through an opening 6 into the center of a storage furnace 5 (and then via a walking beam conveyor in the area ■). It is conveyed laterally to reach the exit 8, and from there it is further transferred to the roll gang 9 and sent to the high-speed deformation roll stun 1:IQ.

If there is a short interruption in the rolling mill, for example due to a caliber change or a malfunction, the billets delivered during this time are conveyed upwards in the drawing from the charging opening 6 and are transferred to the area u of the storage furnace 5. Multiple billets are stored inside. After the cause of the disturbance has been removed, each billet is guided back into the normal material delivery flow.

If the operation of the rolling mill is interrupted for a period longer than that of the storage furnace 5, it is necessary to use a cooling bed 7 located at the rear of the continuous casting apparatus. That is, the product sent from the continuous casting apparatus] is sent to the cooling bellow P7 and is naturally cooled there. , and as soon as the production of the rolling mill is started again, the billet cooled in the meantime passes through the opening 11 via the receiving grid 12 and the roll gang 3 into the storage furnace 5.
is sent in a cold state to the fa Σ range U of , and is heated again while moving from range [■ to ■] of this storage furnace 5. The storage capacity of this storage furnace is designed so that when charging cold billets, the same furnace capacity as during normal hot charging can be exerted on the billets. .

According to 4+7 of the present invention, the rolling mill's rolling mill 1ff
The storage capacity in the storage furnace at time i can be significantly increased, and 1
Cold charging is also possible in the event of a long interruption that exceeds the storage capacity of the storage furnace.

[Brief explanation of the drawing]

The drawings are schematic illustrations of embodiments of the invention. 1- Continuous casting device, 2. Separation device, 3. Location, 4.
9. Roll gang, 5. Storage furnace, 6, 11.° charging opening, 7. Cooling bed, 8. Outlet, 10 = High-speed deformation roll stand, j2. - Receiving grid, 13. Supply roll gang.

Claims (1)

[Scope of Claims]] Utilizing the anti-forming heat, immediately under the rolling of i1J rolling bales,
1. In a casting and rolling apparatus 6 for rolling continuous casting material, a storage furnace for continuous casting material is disposed between the pre-rolling mill and the continuous casting apparatus. , a storage furnace (5) is designed for hot and cold charging, each of which is assigned its own orthogonally transportable transport mechanism, each of which has its own orthogonal transport mechanism. can be operated jointly or separately from each other, and furthermore, a cooling bed (7) for the continuous casting material reservoir is arranged between the continuous casting device (1) and the storage furnace (5). Casting and rolling equipment for rolling continuously cast materials. 2. The casting according to claim 1, wherein the conveyance mechanism comprises continuous arrangement in the bowl conveyance direction, and at least one of the two is reversible in the conveyance direction. rolling equipment. 3. The casting and rolling apparatus according to claim 1 or 2, wherein each of the above-mentioned conveying mechanisms is arranged on both sides of the hot charging reservoir supply device. 4. Receiving grid (]2 for cold supply to storage furnace (5)
) is arranged, and the receiving grid (12) is connected to the storage furnace (5).
) towards the charging opening (11) on the side of the feed roll gang (
13) to the end of a reversible conveying mechanism for cold feeding. 5j. Any one of claims 1 to 4, wherein the length of the general feeding structure is set so that the same furnace capacity can be exhibited during cold charging as during hot charging. 2. The casting and rolling apparatus according to item 1.