JPS625967B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to improvements in continuous processing equipment, and particularly to improvements in equipment for continuously processing rolled products, such as continuous annealing lines.

In recent years, in order to increase the productivity of products, continuous processing equipment that continuously performs processing has been introduced. As continuous processing equipment in pressure equipment,
For example, there are continuous annealing lines, continuous pickling lines, continuous plating lines, etc. Continuous processing is necessary from the viewpoint of energy saving and total cost minimization, and it is becoming inevitable that continuous processing equipment will be increasingly introduced in the future.

A problem with this type of continuous processing equipment is when the inlet equipment for supplying the material to be processed into the processing equipment or the outlet equipment for taking out the processed material breaks down.

In other words, as equipment becomes more continuous, a malfunction or stoppage of one piece of equipment means a stoppage of all equipment.

Furthermore, in furnaces that heat-treat steel strips, the steel strips remain in the high-temperature furnace during the time it takes to recover from a failure, causing thermal deformation of the steel strips and causing properties to differ from the intended ones. This steel strip cannot be made into products.

Furthermore, even if operations are started after a failure has been repaired, plate breakage is likely to occur due to thermal deformation of the steel strip in the furnace and a decrease in tensile strength, making it difficult to smoothly start up operations in a short time.

Once a plate breaks in the furnace, the temperature inside the furnace is first lowered, the break point of the plate is found and connected, and the temperature inside the furnace is raised to restart operation.

Therefore, if a plate breaks in the furnace, it will take a long time to restart the operation, and the amount of wasted heat cannot be ignored in this era of energy conservation.

As mentioned above, although continuous steel strip refining equipment is extremely efficient, it has drawbacks such as a large drop in production, scrapping of steel strip in the furnace, and energy loss even if some equipment fails and stops. ing.

An object of the present invention is to immediately stop all equipment in a continuous steel strip refining equipment equipped with a furnace for heat treating steel strips, even if equipment on the inlet side or outlet side of the furnace is stopped. An object of the present invention is to provide an apparatus that can perform necessary heat treatment on steel strips in a furnace during the restoration of failed equipment.

The feature of the present invention is that in continuous steel strip finishing equipment, if a malfunction occurs in some of the inlet and outlet equipment, the central equipment does not absorb the malfunction, as shown in the example in Figure 2. The aim is to install a dummy coil insertion device and a coil extraction device to eliminate the drawbacks of conventional equipment.

The present invention will be described in detail below based on specific examples.

FIG. 1 shows a continuous steel strip facility that is one of the objects of improvement of the present invention. In this figure, 100 indicates the entrance side equipment, which is composed of a payoff reel 1, a pretreatment device (welding machine) 2, a bridle roll 3, an entrance side looper 4, and a bridle roll 5 provided after the looper 4. Ru. Reference numeral 200 indicates a central processing facility, which is composed of a furnace 6 and a cooling device 7.
Reference numeral 300 indicates outlet equipment, which includes a bride roll 8 provided after the cooling device 7, an outlet looper 9,
A bridle roll 10 after the looper 9, a post-processing equipment (shear) 11, and a tension reel 12
Consists of. The equipment shown in FIG. 1 is generally well-known equipment, and as mentioned above, such equipment has various problems as described above as a prior art.

Now, an embodiment of the present invention for solving such problems is shown in FIG. In this Figure 2,
Each component having the same number as that used in FIG. 1 is the same as the device shown in FIG. In addition to the configuration shown in FIG. 1, FIG. 2 also includes an auxiliary coil insertion device 400 and a coil extraction device 50.
0 is set. This auxiliary coil insertion device 4
00 is an auxiliary payoff reel 13 and a welding machine 20
and the looper 14 provided in the front stage of the furnace 6, and the furnace 6.
It consists of a bride roll 15 provided immediately in front of the. The coil extraction device 500 includes a bride roll 16, a looper 17, and an auxiliary tension reel 18 provided after the cooling device. A more detailed example of this auxiliary coil insertion device 400 is shown in FIGS. 3 and 4. When normal operation is being carried out, as shown in FIG. 3, the looper 14 does not form a loop, and the bridle roll 15 does not restrain the plate material. Therefore, the plate material only passes through the auxiliary coil insertion device and does not have any influence on the plate material. Currently, entrance equipment 100
Consider that a problem has occurred. In this case, the auxiliary coil insertion device 400 operates as shown in FIG. That is, the central facility 200
At the same time, the looper 14 in the auxiliary coil insertion device 400 quickly forms a loop, and the bridle roll 15 is turned on as shown in the figure. After this happens, the supply of new material from the inlet equipment is stopped. and,
A shear 21 (or a saw may be used) cuts the material, and a welder 20 connects (welds) the rear end of the material to the tip of the auxiliary coil wound around the auxiliary payoff reel 13. During this time, the looper 14 continues to supply the material stored in the loop to the central facility. After welding, the auxiliary coil is supplied to the central facility. This allows backup without stopping the line in case of an accident at the input equipment. Then, when the entrance equipment 100 returns, the shear 2
1, the auxiliary material is cut, and a welding machine 20 welds the leading end of the material on the entry equipment side and the rear end of the auxiliary material. Thereafter, the loop of the looper 14 is eliminated while gradually increasing the speeds of the inlet equipment and the central equipment. In this way, by providing the auxiliary coil insertion device 400, any malfunctions in the entrance equipment can be completely backed up.

FIG. 5 shows an example of the flow of operation of the auxiliary coil insertion device when a malfunction occurs in the entrance equipment. A detailed explanation of FIG. 5 will be omitted since it overlaps with the above.

Next, if a problem occurs in the outlet equipment 300, the coil extraction device 500 is further utilized to back up the problem in order to eliminate the problem, as shown in the flowchart shown in FIG.

At the same time that a problem occurs in the exit equipment 300, the entrance equipment 100 and the central equipment 200 are decelerated, and the exit equipment 3
Stop 00.

Regarding deceleration, do it in the same way as when there is a problem with the entrance equipment.

Then, the operation of the coil extraction device 500 arranged on the exit side of the cooling device is started.

That is, the bridle roll 16 is immediately formed, and then the looper 17 is formed.During this time, the shear 22 cuts the product coil, winds it onto the auxiliary tension reel, and winds it up, thereby removing the product in the furnace. Perform coil sampling operation.

If the accident recovers while the auxiliary coil is being supplied, disconnect the auxiliary coil by reversing the procedure for each device.
By connecting the product coil, accelerating the input side and central equipment, and operating the output equipment, normal operation can be restored.

FIG. 7 shows another embodiment of the present invention. The feature of this embodiment is that the auxiliary coil insertion device and the coil extraction device are arranged in front of the inlet looper and behind the outlet looper, respectively.

In this arrangement, by using the entry and exit loopers, the above-mentioned problems can be solved by simply installing an auxiliary payoff reel and an auxiliary tension reel compared to the arrangement after the central equipment. but,
If meandering occurs within the inlet and outlet loopers, the effectiveness of the meandering will be reduced, and auxiliary equipment such as a meandering prevention device for the looper will be required.

In Fig. 2, the looper 14 in front of the furnace and the looper 17 after the cooling device are installed, but the hearth roll When a problem occurs, the hearth roll is moved up and down to form a looper, and the looper 14 before the furnace and the looper 17 after the cooling device are placed in the same way as the looper.
One example is a method that eliminates the need to install a

As explained in detail above, according to the present invention,
Even if some abnormality occurs in the inlet equipment or the outlet equipment, stable operation can be achieved without stopping all equipment. Therefore, productivity does not decrease, and the amount of material that cannot be used as a product can be greatly reduced. In particular, since normal operation can be restored smoothly, the original capabilities of the equipment can be utilized.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing an example of continuous processing equipment, Fig. 2 is a diagram showing an embodiment of the present invention, and Figs. 3 and 4 are for disclosing in detail some of the constituent equipment in Fig. 2. , FIG. 5, and FIG. 6 are diagrams showing an example of the operational flow of an embodiment of the present invention, and FIG. 7 is a diagram showing another embodiment of the present invention. 100...Entrance equipment, 200...Central equipment, 3
00...Exit equipment, 400...Auxiliary coil insertion device, 500...Coil extraction device.

Claims (1)

[Claims] 1. In a continuous processing facility having an input facility for continuously supplying the material to be processed, a central facility for processing the supplied material, and an outlet facility for taking out the processed material, the above-mentioned An auxiliary coil insertion device between the input side of the central equipment and the input side equipment for supplying auxiliary material to the central equipment in the event of a failure of the input side equipment, and an output side of the central equipment and the output side equipment. A continuous processing facility characterized in that a coil extraction device is provided between the central facilities and a coil extraction device for removing material from the central facility in the event of a failure of the outlet facility.