JP4669777B2 - Speed control method for continuous processing equipment - Google Patents

Description

  The present invention relates to a method for controlling equipment for continuously processing a workpiece, and more particularly, to a speed control method suitable for controlling a rolling speed in a continuous rolling facility using a coiled sheet material as a material to be rolled.

  One type of equipment that continuously processes workpieces is continuous rolling equipment that targets thin plate materials such as coiled strip steel sheets. In such continuous rolling equipment, the material to be rolled is continuously processed. For this reason, it is customary to divide the equipment into an entrance facility, a central facility, and an exit facility.

  An example of such a continuous rolling apparatus will be described with reference to FIG. In addition, in the lower side of FIG. 2, an example of an actual machine of such a continuous rolling facility is shown as a reference example.

  In FIG. 2, first, the entry side equipment 1 functions to pull out the coiled material to be rolled from the payoff reel 111 and supply it to the rolling mill 131 of the exit side equipment 3. When the welding machine 132 is installed and one coil of the material to be rolled is pulled out, the coil of the next material to be rolled is inserted into the pay-off reel 111, and the previous material to be rolled is removed. The tip of the next material to be rolled is welded to the rear end.

  Next, the central facility 2 functions to adjust the properties and surface condition of the material to be rolled to be supplied to the rolling mill 131, and for this reason, the central facility 2 includes facilities such as a pickling tank and a continuous annealing furnace. Yes. At this time, in order to uniformly apply chemical treatment and thermal treatment of the material to be rolled, it is necessary to control the moving speed of the material to be rolled within a certain range.

  A rolling mill 131 is installed in the delivery side equipment 3, where the material to be rolled is rolled into a product with a predetermined thickness, and then wound on a tension reel 132. Made into a product coil. At this time, a running shear 133 is installed on the exit side of the rolling mill 131, and a material to be rolled that is continuously rolled is cut into an appropriate length to produce a coil in a product unit.

  At this time, an entry-side looper 4 is provided between the entry-side facility 1 and the center facility 2, and an exit-side looper 5 is provided between the center facility 2 and the exit-side facility 3. This is to absorb the difference in flow velocity.

  Here, the looper is a mechanism for forming a loop (bending extension) on the strip-shaped material to be rolled, and when the loop is formed in this way, the size of the loop changes, so the scale of the looper equipment Thus, the material to be rolled can be retained up to the length defined by the above. Therefore, by providing this looper, the speed difference of the material to be rolled can be absorbed only for a predetermined period.

  As described above, in the entry-side facility 1, it is necessary to temporarily stop the material to be rolled in order to perform welding between the materials to be rolled. Moreover, in the delivery side equipment 3, it is necessary to slow down the rolling speed of the rolling mill 131 in order to cut the material to be rolled and to change the product specifications. On the other hand, in the central facility 2, as described above, it is necessary to keep the moving speed within a certain range. That is, the moving speed of the material to be rolled is different between the entry side facility 1, the central facility 2, and the exit side facility 3.

  Therefore, in order to absorb the difference in moving speed at this time, the entrance side looper 4 and the exit side looper 5 are provided. At this time, the speed difference between the entrance side equipment 1 and the central equipment 2 is the entrance side looper 4. The speed difference between the central facility 2 and the exit facility 3 is absorbed by the exit looper 5.

  By the way, when the rolling speed changes, the thickness, tension, shape, and the like of the rolled material to be rolled change. Therefore, at the entrance of the rolling mill 131, the speed of the material to be rolled needs to be kept constant at all times. For this reason, the exit side equipment 3 needs to be controlled so as not to change the speed as much as possible.

  Therefore, in a certain prior art, the average speed during rolling one coil by the entry side equipment, the central equipment, and the exit side equipment is calculated, and the speed control target value of the exit side equipment 3 is calculated using the minimum value. (For example, refer to Patent Document 1).

In addition, at the entry side equipment, the work of welding the material to be rolled is performed, but depending on the type of material to be rolled at this time, it may take a long time to weld, and in this case it may be necessary to stop for a long time. A method for changing the speed of the rolling mill in the delivery facility has been proposed as a conventional technique (see, for example, Patent Document 2).
JP-A-6-520 JP-A-6-122011

  The above prior art does not give consideration to the fact that the setting of the moving speed of the material to be rolled depends on the operation of the operator, and the maintenance of product quality and production efficiency depends on the skill of the operator. was there.

  In the prior art, the average speed required for rolling one coil is calculated in advance, including the time required for welding work on the entry side and running cut work on the exit side. The value is set as the speed target value of the outgoing equipment, and the operator controls the speed target value.

  For this reason, during rolling operation, when the operation of the entry side equipment is delayed and the speed is reduced from the target speed value, or when the speed is increased because the operation is completed earlier than expected, the operator should operate by looking at the actual operation status. There is a need to.

  In addition, the change in the set speed is accompanied by at least one of acceleration and deceleration of the rolling mill, so that the operating state may become unstable, and fluctuations in sheet thickness and tension may occur, and therefore, within a certain range. Although it is necessary to suppress fluctuations, this requires a high level of skill that is experienced by the operator, which causes problems in maintaining product quality and manufacturing efficiency.

  In addition, in the case of such a continuous rolling mill, there may actually be a case where it is possible to further increase the operation speed by increasing the speed of the delivery side equipment. Is set. Therefore, in this case, it is necessary for the operator to newly determine the setting speed of each facility by judging the operation status. Therefore, in this respect as well, skill required for the operator is required, and maintenance of product quality and production efficiency is required. Will cause problems.

  An object of the present invention is to provide a speed control method for a continuous processing facility in which the setting of the moving speed of a workpiece can be automatically obtained.

  The object is to store the products of the looper equipment in a speed control method of a continuous processing equipment comprising a plurality of equipments having different operation speeds and operation timings, and a looper equipment for absorbing the difference in operation speed between them. The amount is determined from the operating state of the plurality of facilities, and the operation speed of the plurality of facilities is controlled by controlling the actual product accumulation amount of the looper facility to be the determined product accumulation amount. .

Similarly, the above-mentioned object is to provide an entry-side facility for supplying a material to be rolled, a central facility for processing the material to be rolled supplied from the entry-side facility, and a material to be rolled to a predetermined plate thickness from the central facility. Continuous processing equipment comprising an exit side equipment to be rolled, an entrance side looper disposed between the entrance side facility and the center facility, and an exit side looper disposed between the center facility and the exit side facility In this speed control method, the required accumulation amount of the entry side looper and the exit side looper is calculated according to the predicted value and the actual value of the operation pattern of the entry side facility and the exit side facility, and the entry side looper and the accumulation amount of the exit side looper, the central facility and the entering-side equipment to require accumulation amount which is the operation also achieved by controlling the speed of the exit-side equipment to it.

  At this time, the central equipment includes means for chemically treating and thermally treating the material to be rolled, and the speed of the central equipment is required for at least one of the chemical treatment and the thermal treatment. The speed may be changed within the range.

  At this time, the continuous rolling facility may include other facilities in addition to the entry side facility, the central facility, and the exit side facility.

  Similarly, at this time, the speed of each piece of equipment may be controlled within an allowable range set in accordance with the processing performed in each piece of equipment. It may be executed at a change rate set so as not to affect the process.

  According to the present invention, the speed of the entrance equipment and the speed of the central equipment in the continuous rolling equipment, and the speed of the exit equipment are automatically set, so that the operation of the continuous rolling equipment is not affected by the skill of the operator. You can always get efficiently.

  Hereinafter, a rolling speed control device for continuous rolling equipment according to the present invention will be described in detail with reference to the illustrated embodiments.

  FIG. 1 is an embodiment of the present invention, which is an embodiment when the present invention is applied to the continuous rolling facility of FIG. 2, and therefore, in FIG. 2, the exit side equipment 3, the entrance side looper 4, and the exit side looper 5 are the same as those in FIG.

  Therefore, as shown in FIG. 2, the entry-side facility 1 includes a payoff reel 111, a welding machine 112, and these incidental facilities. And since this entrance side equipment 1 supplies a to-be-rolled material continuously, it is necessary to perform the operation | work shown in FIG. 3 (1) during equipment operation.

  First, when one coil of the material to be rolled is pulled out, the coil of the next material to be rolled is inserted into the payoff reel 111, and the tip of the next material to be rolled is welded to the rear end of the previous material to be rolled. It has come to be.

  First, when the preceding material (the previous material to be rolled) is completely dispensed from the payoff reel 111 (step 201), the rear end of the preceding material is stopped at the welder position (step 202). Next, the coil of the succeeding material (the next material to be rolled) is inserted into the payoff reel 111 in which the coil of the preceding material is eliminated (203), and the subsequent material is prepared for rolling.

  Next, the leading end of the following material is discharged from the coil to the position of the welding machine (step 204), and the trailing end of the preceding material and the leading end of the following material are welded by the welding machine (step 205). When the welding is completed, the entry side facility 1 is accelerated (206) so that the material to be rolled is accumulated in the entry side looper 4.

  Further, the exit side equipment 3 is provided with a rolling mill 131 and a running shear 133. In the rolling mill 131, the material to be rolled is rolled and processed into a product. In order to divide the material to be rolled, it is necessary to perform the operation shown in FIG.

  If the point which should be divided | segmented into the coil of a to-be-rolled material approaches the rolling mill 131, the delivery side equipment 3 will be decelerated (step 211). When the deceleration is completed, the traveling shear 133 is cut when the welding point is passed (step 212) and divided into coils. When the division of the coil is completed, the leading end of the succeeding material is wound around the tension reel 132 (step 213). When the winding is completed, the delivery side equipment 3 is accelerated (step 214), and the material to be rolled is accumulated in the delivery side looper 5.

  At this time, since it is desirable that the central facility 2 operates at a constant speed, the entrance-side looper 4 increases the amount of the looper in preparation for the stop of the entrance-side facility 1, and the central facility 2 even when the entrance-side facility 1 stops. The supply of the material to be rolled to 2 can be maintained.

  Further, the exit side looper 5 reduces the amount of the looper in preparation for the deceleration of the exit side facility 3, and when the speed of the exit side facility 3 becomes lower than the speed of the central facility 2, the surplus material to be rolled is removed. Since it is necessary to accumulate, it is necessary to provide a margin for the looper amount.

  Therefore, in this embodiment, as will be described in detail later, the speed is controlled by obtaining the minimum accumulation amount for the input side looper 4 and the maximum accumulation amount for the output side looper 5.

  Here, as described above, in this embodiment, in the continuous rolling facility provided with the entrance side equipment 1, the central equipment 2, the exit side equipment 3, the entrance side looper 4, and the exit side looper 5, it is further shown in FIG. As shown, the input side speed difference setting device 10 and the output side speed difference setting device 11, the input side looper required amount calculation device 12, the output side looper required amount calculation device 13, the central speed setting device 14, and the input side looper amount. An arithmetic device 151 and an exit side looper required amount arithmetic device 152 are provided.

  First, the entry side speed difference setting device 10 obtains the loop amount required by the entry side looper 4 and the exit side looper 5 from the operation status of the entry side facility 1 and the exit side facility 3, and the loop amount is the necessary loop amount. The difference between the speeds of the entrance facility 1 and the central facility 2 is obtained as the entrance speed difference so that the exit speed difference, which is the speed difference between the exit facility 3 and the center facility 2, is determined by the exit speed difference setting device 11. Use to find.

  At this time, since there is a minimum speed and a maximum speed for the entry side equipment 1 and the exit side equipment 3, the speed difference with the central equipment 2 is set within the range, so a predetermined speed difference can be given. There are cases where it is impossible. Therefore, in this case, the central speed is set by operating the speed of the central facility 2 by the central speed setting device 14. This is because the speed of the central facility 2 is preferably a constant value, but may vary somewhat within a certain range.

  In addition, at this time, the input side speed difference setting device 10 and the output side speed difference setting device 11 indicate the required looper amount and the actual looper amount calculated by the input side looper amount calculation device 151 and the output side looper amount calculation device 152. The difference is obtained as a looper amount deviation, and the minimum speed difference necessary to maintain the difference is also obtained.

  In this case, if there is a speed difference, the actual looper amount will not be the required amount of the looper, so it is necessary to reduce the speed difference according to the decrease in the looper amount difference. Since this is a disturbance, the speed fluctuation rate is controlled to be smaller than the normal rate (about 1/5 to 1/10) so as not to give a disturbance to the plate thickness and tension.

  More specifically, in the input side speed difference setting device 10, the input side looper required amount as the calculation result of the input side looper required amount calculation device 12 and the looper amount actual result calculated by the input side looper amount calculation device 151 are calculated. The input side speed difference which is the difference is calculated, and the output side speed difference setting device 11 calculates the output side looper required amount which is the calculation result of the output side looper required amount calculation device 13 and the output side looper required amount calculation device 152. The exit speed difference, which is the difference from the actual looper amount, is calculated.

  Next, the entrance side looper 4 and the exit side looper 5 will now be described. As shown in FIG. 4, these are the looper equipment motor 302, the looper equipment fixed side roll 303, and the looper equipment movement side roll 304. The looper equipment moving side roll 304 is provided so as to be movable left and right by the looper equipment motor 302.

  Therefore, when the looper equipment moving side roll 304 is moved by the looper equipment motor 302, the length of the loop of the material to be rolled changes, and the accumulated amount of the material to be rolled can be arbitrarily controlled. The movable range of the moving roll 304 is determined based on mechanical restrictions.

  Here, first, FIG. 4 (1) shows the state when the accumulation amount is maximum, and FIG. 4 (2) shows the state when the accumulation amount is minimum, and the accumulation amount can be changed between these. Therefore, the maximum value and the minimum value of the looper amount resulting from the mechanical restriction at this time are referred to as the mechanical maximum accumulation amount and the mechanical minimum accumulation amount, respectively.

  Then, the input side looper amount calculation device 151 and the output side looper amount calculation device 152 respectively determine the looper amount for each of the input side looper 4 and the output side looper 5 from the position of the looper equipment moving side roll 304 and the mechanical configuration of the looper. Is calculated.

  At this time, the input side looper 4 only needs to have a looper storage amount in the range from the mechanical maximum storage amount to the minimum storage amount, and the output side looper 5 has a range from the mechanical minimum storage amount to the maximum storage amount. It would be good if there was a looper accumulation amount. If it demonstrates concretely, what is necessary is just to obtain | require the required accumulation | storage amount of the entrance side looper 4 and the exit side looper 5 at this time according to the view as shown in FIG.

  First, the entry-side facility 1 performs the operation described in FIG. 3 (1), and therefore operates according to the speed pattern shown in FIG. 5 (1). And the low speed time which stops the entrance side equipment 1 here becomes the time which added the allowance time to the time which the process from the step 201 in the entrance side equipment 1 to step 206 requires. The margin time here is a spare time to be taken into consideration in case each work does not proceed smoothly.

  In FIG. 5 (1), the portion where the entry side equipment speed indicated by the solid line is lower than the center equipment speed indicated by the broken line is the part where the material to be rolled needs to be supplemented by the entry side looper 4. The minimum input side looper accumulation amount 250 is determined from the portion.

  Next, the delivery facility 3 is operated with the speed pattern shown in FIG. At this time, since the delivery side equipment 3 has a machine configuration that can perform the operations from step 211 to step 214 in FIG. 3 (2) while operating, it is basically necessary to set the delivery side speed to 0. There is no. Here, the low speed time is obtained by adding the above-described margin time to the time required for the work from step 211 to step 214.

  Also in FIG. 5 (2), the part where the outgoing equipment speed is lower than the central equipment speed is the part accumulated in the outgoing looper 5, which is the required outgoing side looper accumulation amount 251. Accordingly, since the output side looper 5 needs to store this amount during the low speed operation of the output side facility 3, the maximum output amount of the output side looper is determined from the mechanical maximum storage amount of the output side looper. The amount 251 is subtracted.

  At this time, the acceleration / deceleration rates of the speeds in the entry side facility 1 and the exit side facility 3 are determined in advance. Accordingly, if the time required for the work from step 201 to step 206 and the time required for the work from step 211 to step 214 can be predicted, the minimum input side looper accumulation amount 250 and the maximum output side looper accumulation amount 251 can be obtained.

FIG. 6 shows a required looper amount calculation method at this time. The required looper accumulation amount l is that the acceleration / deceleration rate is α ₀ , the low speed time is T ₀ , the deceleration speed is V ₀ , and the central equipment speed is V _c can be obtained by the following equation (1).

l = {(V _c −V ₀ ) / α ₀ + T ₀ } · (V _c −V ₀ ) (1)

By the way, the state of the entrance side equipment 1, the central equipment 2, and the exit side equipment 3 changes every moment. Therefore, this looper required amount l needs to be calculated and updated in a timely manner in accordance with the above-described change. As an example, FIG. 7 shows an example in which the necessary looper amount of the entry side equipment 3 is considered.

  First, FIG. 7 (1) is a diagram at the time of the current position 260 of the speed pattern in a state before the entry side facility 1 starts the work from step 201 to step 206. FIG. Here, the entry side looper required amount 261 is calculated from a low speed time obtained by adding a margin time to the standard time required for the work from the entry side step 201 to step 206.

  Next, FIGS. 7 (2) and 7 (3) show the state at the current position 260. At this time, FIG. 7 (2) shows the state after the work up to step 202 is completed. Is when the work is completed only up to step 201.

  Then, in the case of FIG. 7 (2), since the process has been completed up to step 202, the input side looper required amount 262 is obtained by adding an extra time to the standard time required for the work from step 203 to step 206 on the input side. It becomes. On the other hand, in the case of (3) in FIG. 3, since only the process up to step 201 is completed, the input-side looper amount 263 is obtained by adding a margin time to the standard time required for the work from step 202 to step 206 on the input side. Become.

  Accordingly, in the case of FIG. 7 (2), the required looper amount can be smaller than in the case of FIG. 7 (1), and in the case of FIG. Need to be more.

  In the input side speed difference setting device 10 and the output side speed difference setting device 11, the input side looper required amount and the output side looper, which are the calculation results of the input side looper required amount calculation device 12 and the output side looper required amount calculation device 13. The central equipment 2 set speed is calculated from the difference between the required amount and the actual looper amount calculated by the input side looper amount calculation device 151 and the output side looper amount calculation device 152.

  FIG. 8 shows an outline of the processing by the output side speed difference setting device 11 at this time, but the input side speed difference setting device 10 performs the same calculation. Here, assuming that there is a speed difference between the delivery facility 3 and the central facility 2, the delivery looper accumulation amount changes in this case. Therefore, in order to keep the output side looper accumulation amount constant, it is necessary to make the speed difference zero.

  At this time, as described above, the continuous rolling equipment accelerates and decelerates according to a certain acceleration / deceleration rate. Therefore, an upper limit is given to the speed difference according to the looper accumulation amount. Accordingly, when the speed difference from the center is Δ, it is necessary to decelerate as shown in FIG. 8 in order to make this speed difference Δ zero. However, in this case, the looper accumulation amount in the area indicated by the looper accumulation amount change amount changes during deceleration.

  Therefore, at this time, the speed difference upper limit value ΔV expressed by the following equation (2) is set according to the deviation Δl between the required looper amount and the looper amount.

ΔV = √ (2α ₀・ Δl) (2)

Here, the accumulation amount of the entrance side looper 4 is adjusted by the speed difference between the central facility 2 and the entry side facility 1 in this way, and the accumulation amount of the exit side looper 5 is adjusted by the speed difference between the central facility 2 and the exit side facility 3. In order to adjust, for example, when the exit side equipment 3 decelerates, accumulation is started by the exit side looper 5. In this case, if the stop time of the exit side equipment 3 is extended, the exit side looper 5 There is a risk that the accumulated amount of will become insufficient.

  Therefore, in this case, it is necessary to reduce the speed of the central facility 2 within a certain range to reduce the looper accumulation amount per unit time of the outgoing looper 5. Then, this is executed by the central speed setting device 14, and FIG. 9 shows the control by the central speed setting device 14 at this time.

  As described above, the central facility 2 is a facility that mainly serves to apply chemical treatment and thermal treatment such as pickling and annealing to the material to be rolled. For this reason, the processing time in the facility, that is, the central facility speed. Therefore, the speed in the central facility 2 needs to be controlled within a certain range.

  Here, this situation is shown in the characteristic diagram on the upper side of FIG. 9. As shown in the figure, the speed of the central facility 2 (hereinafter referred to as the central speed) is as described above. The upper limit speed, the lower limit speed, and the normal use speed are set in advance. At this time, the range between the upper limit speed and the lower limit speed is the above-described constant value range.

  Then, the central speed setting device 14 uses the control rule shown on the lower side of FIG. 9 to determine the looper amounts of the entrance side looper 4 and the exit side looper 5 and the set speed of the entrance side equipment 1 (hereinafter referred to as the entrance side equipment). The central speed is set according to the set speed of the delivery side equipment 3 (also called the delivery side equipment speed), and control is performed so that acceleration / deceleration is given within the upper and lower limit constant value range.

  And first, when acceleration / deceleration of the central facility 2 is permitted as in the control rules 1, 3, 4, and 6, the deceleration or increase of the central speed is applied according to each control rule.

  On the other hand, if the looper amount is not improved even if the deceleration or increase of the central speed is applied as in the control rules 2, 5, and 7, an alarm is displayed and it is left to the operator to determine how to deal with it. There are various ways to deal with this, such as operating the speed of the central facility 2 exceeding the upper and lower limit values, or even if the accumulated amount of the looper goes up and down, and seeing the fluctuation range. A possible solution is possible.

  Therefore, according to this embodiment, the speed of the entrance facility 1 and the speed of the central facility 2 and the speed of the exit facility 3 are automatically set. As a result, the operation of the continuous rolling facility is Regardless of the skill of the operator, it can always be obtained efficiently.

  Here, as shown in the above-mentioned control rule 3, when the accumulated amount of the looper is within a predetermined appropriate range and the central speed increase is applied, the exit side equipment speed is also increased. The central speed setting device 14 may be configured. In the case of the embodiment as described above, when the entry-side facility 1 finishes the work efficiently, the speed of the exit-side facility 3, that is, the rolling speed is increased in accordance with the increase of the central speed. Can be raised.

  However, even in this case, it is necessary to make the speed change of the central facility 2 smaller than the normal acceleration / deceleration rate so that the influence of the acceleration / deceleration on the product can be suppressed. As described above, in a rolling mill, product quality defects such as plate thickness variation, tension variation, and shape variation usually occur due to acceleration / deceleration. Therefore, it is necessary to prevent acceleration / deceleration as much as possible.

Therefore, in the embodiment of the present invention, the acceleration / deceleration rate α ₀ is suppressed to 1/5 to 1/10 of the acceleration / deceleration rate in a normal continuous rolling facility. In this case, an acceleration / deceleration rate that can be followed by automatic plate thickness control, automatic tension control, and automatic shape control can be achieved. Therefore, according to this embodiment, occurrence of defects in quality can be suppressed.

  By the way, although the above description was described as embodiment of this invention about the case where this invention was applied to the continuous rolling equipment provided with the entrance side equipment, the center equipment, and the exit side equipment, a plurality of production equipment and those Needless to say, the present invention is applicable to equipment other than continuous rolling equipment as long as it is a continuous production equipment having a product storage device for absorbing the speed difference.

It is a block block diagram which shows one Embodiment of the speed control method of the continuous rolling installation by this invention. It is explanatory drawing which shows an example of a continuous rolling installation. It is a flowchart for demonstrating the operation | work required by the entrance side installation and exit side installation in embodiment of this invention. It is explanatory drawing which shows an example of the looper used in embodiment of this invention. It is explanatory drawing which shows the determination method of the required looper amount in embodiment of this invention. It is explanatory drawing of the looper required amount calculation method in embodiment of this invention. It is explanatory drawing of the looper required amount change calculation method in embodiment of this invention. It is explanatory drawing which shows the process of the delivery side speed difference setting apparatus in embodiment of this invention. It is explanatory drawing which shows operation | movement of the center speed setting apparatus in embodiment of this invention.

Explanation of symbols

1: Incoming equipment 2: Central equipment 3: Outgoing equipment 4: Incoming looper 5: Outgoing looper 10: Incoming speed difference setting device 11: Outgoing speed difference setting device 12: Incoming looper required amount calculation device 13 : Outgoing looper required amount calculation device 14: Central speed setting device

Claims (6)

In a speed control method for a continuous processing facility comprising a plurality of facilities with different operation speeds and operation timings, and a looper facility for absorbing the difference in operation speed between them,
The product accumulation amount of the looper facility is determined from the operating state of the plurality of facilities,
A speed control method for a continuous processing facility, wherein an operation speed of the plurality of facilities is controlled so that an actual product accumulation amount of the looper facility becomes the determined product accumulation amount. An entry side facility for supplying the material to be rolled, a central facility for processing the material to be rolled supplied from the entry side facility, and an exit side facility for rolling the material to be rolled supplied from the center facility to a predetermined thickness. And a speed control method for a continuous processing facility comprising: an entrance looper disposed between the entry facility and the center facility; and an exit looper disposed between the center facility and the exit facility. ,
The required accumulation amount of the entry side looper and the exit side looper is calculated according to the predicted value and the actual value of the operation pattern of the entry side facility and the exit side facility, and the accumulation amount of the entry side looper and the exit side looper but the computed the as the entering-side facilities require accumulation central facility, the speed control method for the continuous treatment facility, characterized by controlling the speed of the exit-side equipment to it. In the invention of claim 2,
The central facility includes means for chemically and thermally treating the material to be rolled, and the speed of the central facility is within an allowable range required for at least one of the chemical treatment and the thermal treatment. The speed control method for continuous processing equipment, wherein the speed is changed at In the invention of claim 2,
The speed setting method for a continuous processing facility, wherein the continuous processing facility includes another facility in addition to the entry side facility, the central facility, and the exit side facility. In the invention of claim 2,
The speed setting method for the continuous processing equipment, wherein the speed of each equipment is controlled within an allowable range that is individually set according to the processing performed in each equipment. In the invention according to claim 5,
The speed change method of the continuous processing equipment is characterized in that the speed change of each equipment is executed under a change rate set so as not to affect the product accuracy.

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