DD289808A5 - OVEN FOR WARMING, MAINTENANCE AND ACCUMULATION OF HUTS PRODUCTS - Google Patents

Abstract

The invention relates to a Gluehofen for semi-finished products in a steel mill, which is provided for receiving and transporting the semi-finished Laengsrichtung with a transport gear, the Rollgaenge for loading and for discharging the semi-finished products from the Gluehofen in the transverse direction with each other, wherein the transport gear Stuetztraeger for the semi-finished products and transport frames, which are arranged at a predetermined distance in the Stuetztraegern and with respect to these raised and lowered and horizontally movable to transport the semi-finished vorwaerts and wherein the ends of the transport frame between the rollers of the Rollgaenge to Recording and storage of semi-finished products are arranged. Here, a furnace is to create, in which the semi-finished products receive both the required heat treatment for further processing, such as rollers and at the same time the semi-finished products can be stored under heat. This is accomplished by dividing the support beams into at least two consecutive groups which are independently movable, the groups of support beams and the transport frames with respect to the roller tracks in the vertical direction from a position of their receiving surfaces for the semi-finished products, possibly the take-up surfaces of the roller races for these are relatively displaceable up to a position below this and in the opposite direction. Fig. 1 {Glue furnace; Semi-finished products; Roller table; Stuetzkoerper; Transport frame; Group; vertical relative displacement; Heat Treatment; Aufnahmeflaeche}

Description

For this 3 pages drawings

Field of application of the invention

The invention relates to a Gliinofen for semi-finished products in a steel mill, which is versohen for receiving and transporting the semi-finished products in the longitudinal direction with a transport gear, the roller tables for charging and discharging the semi-finished products from the annealing furnace in the transverse direction with each other, wherein the transport gear support for the Semi-finished and transport frame has, which are arranged at a predetermined distance from the support beams and with respect to these raised and lowered and formed horizontally movable to transport the semi-finished forward and the ends of the transport frame between the rollers of the roller tables for receiving and storage the semi-finished products are arranged.

Characteristic of the known state of the art It is known to pour semi-finished products into steelworks with continuous operation from a casting machine with a ladle

and process them further without inter-lateral cooling in a roller mill. For this it is necessary this

To feed semi-finished products from the casting machine to an annealing furnace, in which the heat treatment necessary for the rolling process

he follows.

For this technology, however, the interposition of a second annealing furnace, a so-called residence furnace

necessary, between the continuous casting machine and the rolling mill, which has the necessary logger capacity for the

Products from the foundry at a momentary standstill of the rolling plant owns or simply to the various To balance the working temp between pouring and rolling. Under these conditions, it is at a momentary shutdown of the rolling mill, due to a Panno or the conversion of the Rolling mill, etc., necessary to store the semi-finished products from the foundry in dom stay, without pouring too

to interrupt and a momentary interruption of the casting by the previously stored semi-finished products for

Rollers are sent. The known method consists of two auxiliary annealing furnaces, one for the heat treatment for rolling and einon

to use for the stay, however, implies by the necessity of stocking and resuming the

Semi-finished products from both annealing furnaces a mixing of the semi-finished products from the foundry, which consequently not in the order in which

They left the foundry, arrived at the rolling mill. This mixing can sometimes be inadmissible, especially if it is small batches with a special composition, which of course must not be mixed with others.

The object of the invention is to form a furnace for semi-finished products in a steel mill so that in a continuous manufacturing process, a production of quality products is guaranteed even for smaller batches.

Explanation of the essence of the invention

The invention is based on the object, an annealing furnace for semi-finished products in a steel mill, which is provided for receiving and transporting the semi-finished products in the longitudinal direction with a transport gear, the roller tables for charging and for discharging the semi-finished products from the annealing furnace in the transverse direction with each other, wherein the Transport gear support carrier for the semi-finished products and Transportrahm; n, which are arranged at a predetermined distance from the support beams and with respect to these raised and lowered and horizontally movable to transport the semi-finished »forward and the ends of the Transportrahrr. s between the rollers of the roller tables for receiving and storing the semifinished products are arranged, in which the semi-finished products include the required heat treatment for further processing, such as rolling, and also stored the semi-finished products to the extent necessary under heat and in the Order of feed au s of the casting machine are discharged again.

According to the invention the object is achieved in that the support beams are divided into at least two successive groups which are movable independently, wherein the groups of support beams and the transport frame with respect to the roller tables in the vertical direction from a position of their Aufnahmdfläche for the semi-finished above the receiving surface the roller tables for these are relatively displaceable up to a position below this and in the opposite direction. Preferably, the annealing furnace is adapted to have the direction of movement to be executed in the vertical direction relative to the roller tables, with which predetermined positions between the end positions above and below the receiving surfaces of the roller conveyors are adjustable and whereby the transport frames occupy one position at a step of their horizontal movement to the receiving surface of the support carrier, in which a recording of the semifinished products and their further transport by one step is feasible.

Furthermore, there is the possibility that the support beams are arranged vertically displaceable to the roller tables. It is of course also possible that the roller tracks are arranged vertically displaceable to the support beams. Here are Entsprochende combinations possible, in which both are designed to be height adjustable, and these also apply to the transport frame.

embodiments The invention will be explained in more detail with reference to exemplary embodiments. In the accompanying drawing show Fig. 1: the front view of the annealing furnace in a schematic representation in section Fig. 2: the section H-II of FIG. 1 in teilweister representation 3 shows the front view of the annealing furnace according to FIG. 1, in different positions a, b, c, d, e 4 shows the front view of the annealing furnace according to FIG. 1 in further positions a, b, c, d. An inventive annealing furnace 10, wio shown in Fig. 1, a roller table 11 for loading and a roller table 12 for Discharge of semi-finished products. The two roller tables 11; 12 are through several transport frames 13, which are longitudinally

extend the annealing furnace 10, connected to each other in the transverse direction. Over the width of the annealing furnace 10, as shown in Figure 2, between the transport frame 13 support beams 14; 15 arranged. The distance between the elements of the

Transport frame 13 and those of the support beam 14; 15 in each other is so big that they bich independently

can move. The support beams 14; 15 are divided into at least two groups, these groups the respective

Sections of the annealing furnace 10 are assigned. The support bearing 14 is in the post-heating of the semi-finished products

Serving section, in which these were annealed to the temperature, they for the following operation in the

Need embodiment of the rollers. The support beam 15 is located in the following section of the annealing furnace 10, in which the semi-finished products even at a longer Stay at the temperature necessary for the next work. The transport frames sir. ' connected to a known, not shown drive device. you are

height adjustable and in the direction of the annealing furnace horizontally forward and backward slidably formed. Each element is in its upper position and its transport surface on the roller tables 11; 12 and in his position among these.

In the horizontal plane are the transport frame 13, whose left end near the left Wt nd of the annealing furnace 10th

is located (as Fig. 1 shows), and a position in which its right end is in the vicinity of the right wall of the annealing furnace 10.

The support beams 14; 15 are also connected to a drive device, not shown, known per se and

independently adjustable. However, it is only an adjustment in height, that is vertical to the

Roller tables 11; 12 and the transport frame 13 possible. In its upper position, its receiving surface is over

the roller tables 11; 12 and in their lower position among these. There are just as with the transport frame 13 in the

Support beams 14; 15 near intermediate levels or positions. To move between the rollers of the roller tables 11; 12 to insert, have the transport frame 13 in horizontal Direction tapered ends. Of course, the annealing furnace also has various devices known per se, which are required for its operation, such as Burners, heat and smoke exhaust. In addition, all the interior surfaces of the annealing furnace 10 which are stressed by the heat are suitable

lined fireproof material that meets the respective requirements.

By the possibilities of movement, which provides the annealing furnace 10 according to the invention, it is possible to all in its interior Perform operations of storage, transport and continuous operation, without a use

other ovens is necessary. The successive steps that correspond to these functions may be due to the

Flexibility of the chosen system to be very diverse. In the following embodiments, possible applications of the annealing furnace 10 are described, such as from a non

shown continuous casting machine can be transported and stored under a corresponding heat treatment.

The elementary movement of the transport frames 13 consists of a known combination of a vertical and a nn

horizontal movement of the same. Thus, the elementary movement forms a movement, in which the transporting jacks 13 are raised with the Mnlbzeugen lying thereon, with their transporting surface moved rectilinearly in the horizontal direction forward and finally lowered again to deposit the transported semifinished products again. The empty transport frame 13 then return by a corresponding movement back to their original position in which they can perform a further elementary movement.

In the following embodiments is as reference plane - / + = the transport surface of the roller tables 11; 12 elected and

on this basis, the position or the achieved levels of the transport frame 13 and the support beams 14; 15th

In the following embodiment, a continuous operating cycle is shown in which the semi-finished products from the

continuous casting machine are transported over the roller table 11 in the annealing furnace 10 and continuously go through this.

The duration of the stay in the annealing furnace 10 is determined by the required heat treatment. In Figure 3, the individual necessary positions are a; b; c; d; e shown. Here take the transport frame 13 and the Support bracket 14; 15 with its transport surface in height with respect to the reference plane ± 0 of the roller tables 11; 12 different ones Layers -1, -2, -3, -4 below this level and +1 above it. In the Arboitsschritt a of Figure 3 is a semi-finished product on the roller table 11 in the reference plane ± 0 and at least one Semifinished product at the rear end of the support beam 15, on the level -3, and two semi-finished products on the support beam 14, the level -1,

and consequently both lie below the reference plane ± 0 of the roller tables 11; 12 and the semifinished thereon.

Since the rolling and consequently the withdrawal speed is significantly higher than the casting speed and consequently the Feeding speed is 12, the roller table is safely free at the moment in which the feed with the new Semifinished, which has arrived on the roller table 11, is completed. When the charge is finished, the support beams 14; 15 lifted to the level +1 and the transport frame 13 has been

lifted to the reference plane +/- 0, as the step b in Figure 3 shows, so that the roller tables 11; 12 during the following

Forward movements of the semi-finished products are not charged. By a succession of elementary movements of the Transport frame 13 move the semi-finished products in the annealing furnace 10 so that they occupy the position in step c of Figure 3. The subsequent lowering of the transport frame 13 on the level -4 and the support support 14 on the level -1 allows

it is to bring the first semi-finished product of the series on the roller table 1 2, whereby it can be transported to the rolling device, not shown.

At the same time the support beam 15 is brought to the level -4, whereby a new semi-finished product from the continuous Casting machine can get to the roller table 11, which is apparent from the operation d of FIG. 3. The Halbze jg, which is closest to the roller table 11, is then by several Elementarbewegunge-i the Transport frame 13 transported to the end of the support bracket 13. This process step happens during the for Loading with the new semi-finished necessary time interval and gives the step e in Fig. 3, the Step a is analogous, whereby the beginning of a new sequence of steps a; b; c; d; e under the described Conditions becomes possible. In an unforeseen stop of the rolling device, the annealing furnace 10 offers the possibility of storage of the

Continuous casting machine coming semi-finished products while ensuring compliance with the predetermined temperature, so that they can then be transported away for rolling.

It is conceivable that the interruption of the rolling process occurs when the annealing furnace 10 in the in the step d

the position shown in Fig.3 is located.

An embodiment of the steps a; b; c; d in the annealing furnace 10 during storage is shown in FIG. The support beam 14 is raised to the +3 level and held there during the entire storage so that it is on them

Semi-finished products are not moved by the elementary movements of the transport frame 13 and that at each

Arrival of semi-finished products on the roller table 11 for loading the support trainer-jer 15 lower the transport frame 13 and rise

move the way analogous to that already described for continuous operation to those on them

Semi-finished goods to transport, the only difference is that the semi-finished, through the roller table 11

arrive, not completely transported to the rear end of the support beam 15, but only up to a

Distance that is slightly above the width of her semi-finished products, whereby the position according to the steps a; b; c; d according to 4 in the annealing furnace 10 is formed. The capacity of the annealing furnace 10 must be so large that it can accommodate semi-finished products whose production is the content of a Casting ladle correspond, so that in each case the storage possibility of the semi-finished products until the resumption of rolling

is guaranteed.

Under these conditions, when resuming rolling, compliance with the predetermined supply of the semi-finished products

possible.

It is sufficient to lower the transport frame 13 and the support bracket 14 so that the first stored semi-finished on the roller table 12th

can be discontinued for delivery. Subsequently, then the support beams 14; 15 lifted to the same level +1, and the transport frame 13 perform as many elementary movements as are necessary to move all the semi-finished products in the annealing furnace 10 by one position, so that the next semi-finished product can be deposited on the transport surface of the roller table 12, to then transport it off to completely empty the annealing furnace 10.

By the described embodiments, the possibilities of movement in the context of the inventive solution

not exhausted. There are further possible movements inside the annealing furnace 10, which correspond to the gostelite requirements.

Eg, the residence time of the semi-finished products in the different zones of the annealing furnace 10 can be changed, for example

that a modified heat treatment is possible. Likewise, the structure indicated by the drawings and the embodiments may not be construed as limiting the invention. For example, outside the

Annealing 10 rollers be arranged with the transport frame 13 and the support beams 14; 15 are connected. Incidentally, the relative movement between the transport frame 13, the support beams 14; 15, the roller tables 11; 12, the

the lifting of the semi-finished products with respect to the roller tables 11; 12 even achieved by other means, in which the

Sequence and the extent of mutual movements to each other is varied.

Claims (4)

1. annealing furnace for semi-finished products in a steel mill, which is provided for receiving and transporting the semi-finished products in the longitudinal direction with a transport gear, the roller tables for loading and for discharging the semi-finished products from the annealing furnace in the transverse direction with each other, wherein the transport gear support beam for the semi-finished products and Transport frame, which are arranged at a predetermined distance from the support beams and with respect to these raised and lowered and formed horizontally movable to transport the semi-finished forward, and wherein the ends of the transport frame between the rollers doi Kollgänge for receiving and storage the semi-finished products are arranged, characterized in that the support beams (14; 15) are subdivided into at least two successive groups which are movable independently of each other, the groups of support beams (14; 15) and the transport frames (i3) with respect to the roller tables (11; 12) in the vertical direction, from a position of their receiving surface for the semi-finished products above the receiving surfaces of the roller tables (11; 12) for which are relatively displaceable up to a position below this and in the opposite direction. 2. Annealing furnace according to claim 1, characterized in that it comprises the movement in the vertical direction to the roller tables (11; 12) performing movement devices, predetermined positions between the end positions above and below the receiving surfaces of the roller tables (11; 12) are adjustable, and whereby the transport frames (13) at a step of their horizontal movement have a position to the receiving surface of the support beams (14; 15), in which a recording of the semifinished products and their further transport by one step is feasible. 3. Annealing furnace according to claim 1, characterized in that the support beams (14; 15) to the roller tables (11; 12) are arranged vertically displaceable. 4. Annealing furnace according to claim 1, characterized in that the roller tables (11; 12) to the support beams (14; 15) are arranged vertically displaceable.