JPH05212410A - Cold-rolling equipment arranged successively after one series of continuous annealing and descaling device for stainless steel strip - Google Patents

Abstract

PURPOSE:To obtain many kinds of actual advantages based on saving of the number of processes by not only cold-rolling a stainless steel strip after subjected to annealing and descaling treatments at a stroke but also providing stably a series of continuous annealing and descaling rolling equipments having multi-functions in order to integrate and combine the continuous annealing and descaling equipment and the cold-rolling equipment to save the number of processes. CONSTITUTION:The cold rolling equipment is arranged in a series of the equipments successively after the annealing and descaling apparatus for the stainless steel strip continuously passed through this apparatus. Between a tension bridle roll apparatus 10 on the upstream side and a two high cold rolling mill or a pinch roll apparatus 17 on the downstream side, the cold rolling mill 11 at the first set from the upstream side and further, plural sets of multi-high cold rolling mills 16 are arranged. Then, at least one set of the front side tension reel roll device 14 just after the cold rolling mill 11 and further, at least one set of the rear side tension reel roll device 20 just after the two high cold rolling mill or the pinch roll device 17 are arranged, respectively.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention follows primarily an annealing and descaling apparatus for continuously threaded stainless steel strips,
The stainless steel strip that has been subjected to this annealing treatment and descaling treatment (whether it is a hot-rolled stainless steel strip or a cold-rolled stainless steel strip) is continuous without stopping the operation of the annealing and descaling equipment. Cold rolling installation followed by a series of continuous annealing and descaling equipment for stainless steel strips that can be processed in a uniform manner.

[0002]

2. Description of the Related Art Generally, a hot-rolled stainless steel strip has a hot-rolled structure that disappears to be reformed and a work-hardened steel strip is softened by hot-rolling. In order to remove the thick and dense oxide scale generated by the method, as disclosed in, for example, Japanese Patent Application Laid-Open No. 59-41482, an annealing apparatus and a combination of mechanical treatment and chemical treatment were mainly used. An annealing treatment and a descaling treatment are performed by continuously passing through a series of annealing and descaling equipment arranged steps including the descaling equipment. In this case, in a specific hot-rolled stainless steel strip, for example, in a step having a box-type annealing furnace arranged separately, only the annealing treatment was performed first, and then the series of annealing and descaling devices were arranged. In some cases, the plate is continuously passed through the process and only the descaling process is performed.

The hot-rolled stainless steel strip that has been annealed and descaled as described above is then subjected to various types of Levers and tandem types equipped with various types of cold rolling mills and cold rolling mills combined therewith. In the rolling process in which the cold rolling equipment of the type is arranged, cold rolling is performed by passing the steel strips one by one or continuously. The cold-rolled stainless steel strip that has been work-hardened by such cold rolling is almost the same as that described above in order to further soften and modify it as necessary and to remove oxide scale generated by the annealing treatment. A series of similar annealing and descaling devices are continuously passed through the annealing and descaling processes.

When the cold-rolled stainless steel strip that has been subjected to such annealing treatment and descaling treatment is further cold-rolled to be thinned, the series of annealing and descaling equipment and cold rolling described above are performed. It is manufactured by repeatedly passing through each process in which equipment and equipment are arranged and performing each such treatment. In other words, in any case, the stainless steel strip is manufactured by passing through each of the individual rolling steps, the annealing and the step of disposing the descaling device as necessary in each step.

However, the improvement of quality and yield, the reduction of the amount of steel strip coil transportation and processing, the reduction of equipment such as vehicles required for this transportation, the reduction of the amount of steel strip coil work-in-process between each process, and the reduction of these And rationalization of logistics improvement such as narrowing of steel strip coil storage space and effective use of space, reduction of required manufacturing process days by shortening process, direct and indirect by reducing consumption of electricity, water, interleaving paper, etc. Energy saving and cost reduction, labor saving and high speed automatic operation to improve workability, efficiency and productivity, effective use of land (site), cost reduction, etc. Also in the manufacturing process, a process saving process that combines both of the above-mentioned processes from the past, that is, a series of equipments that are originally integrated as separate annealing and descaling equipments and cold rolling equipments (hereinafter, Ryakuka to about to be merely suggested arranged one step of may be referred to as continuous annealing descaling rolling equipment) is also installed.

In the process in which a series of integrated equipments are arranged in this way, the stainless steel strip which has been continuously passed through the annealing treatment and the descaling treatment is continuously cold-rolled and finished. However, a fatal problem at this time is that roll marks are generated on the surface of the stainless steel strip during the cold rolling. The treatment and disposal of the stainless steel strip itself with such a roll mark is also a problem, but rather than that, it is necessary to inspect by making the roll plate stop or the low speed rolling state, and once. When it is confirmed that a roll mark has been generated, the threading should be stopped, the work roll that is the source of the roll mark should be inspected and checked, and then the relevant work roll, etc. must be reassembled. If the stripping process caused by rolling causes the steel strip to be separated from the conventional cold rolling equipment and the annealing and descaling equipment is installed in a completely separate process, strips are continuously stripped without any suspension. The biggest problem is that even the relevant process part, which must have been stopped, must be stopped.

[0007]

SUMMARY OF THE INVENTION Therefore, in the present invention, in the production of a stainless steel strip, the annealing and descaling equipment and the cold rolling equipment which are originally arranged in the individual processes are connected and integrated. In order to reduce the number of processes, a series of equipment, in which a continuous rolling stainless steel strip is mainly provided with an annealing and descaling device and subsequently with a cold rolling equipment, that is, in a series of continuous annealing descaling equipment, ) Basically, this equipment is capable of producing a desired cold-rolled stainless steel strip by cold-rolling the stainless steel strip that has undergone the annealing treatment and the descaling treatment at once, and (b) various surface finishes ( No. 1 finish specified in JIS G4306 "Hot rolled stainless steel strip", surface finish other than No. 1 finish by agreement with the orderer, JIS G4307
It is a multi-functional facility to manufacture stainless steel strips with No. 2D finish and No. 2B finish, etc. defined in "Cold rolled stainless steel strip". C) Cold rolling as described above Even if a roll mark appears on the surface of the stainless steel strip due to cold rolling in the facility, the facility configuration is provided with means that can reduce or avoid the extent of various harmful effects caused by the roll mark. D) The challenge is to configure such a series of facilities so that they can be operated efficiently and stably, and that various profits can be obtained based on the target process-saving processes.

[0008]

DISCLOSURE OF THE INVENTION As a result of intensive studies to solve the above-mentioned problems, the inventors of the present invention arranged mainly in an annealing and descaling device for continuously passing stainless steel strips and arranged in a series of equipment. As the cold rolling equipment to be used, a tension bridle roll device is provided on the upstream side of the cold rolling equipment and a double cold rolling machine or a pinch roll device is provided on the downstream side as tension generating means, and the tension on the upstream side is provided. A first cold rolling mill from the upstream side and a plurality of multi-stage cold rolling mills are arranged between the bridle roll device and the downstream double cold rolling mill or the pinch roll device, and the upstream At least one front surface of a stainless steel strip unrolled immediately after the first cold rolling mill from the side or cold rolled by the first cold rolling mill from the upstream side is wound via a shearing machine. Tension reel device Immediately after the double cold rolling mill or the pinch roll device on the side, at least one rear surface tension reel device for winding the stainless steel strip cold-rolled by the multi-stage cold rolling mill through the shearing machine is provided. The present invention has been completed by researching what should be done.

Further, the first cold rolling mill from the upstream side is in a state in which a pair of upper and lower work rolls are opened and a cold rolling can be performed as a double cold rolling mill or a quadruple cold rolling mill. If the cold rolling mill is configured to change the roll arrangement in the cold rolling mill and change the rolls, the main annealing process and the descaling process can be performed by opening a pair of upper and lower work rolls. Among them, at least the unrolled stainless steel strip that has been subjected to the descaling treatment can be immediately taken up as a hot-rolled stainless steel strip of No. 1 finish or the like through a shearing machine, and mainly the cold rolling mill is used. By using as a double cold rolling mill or a quadruple cold rolling mill and lightly cold rolling, as a cold rolled stainless steel strip such as No. 2D finish or No. 2B finish, front tension is immediately applied via a shearing machine. Lee Being capable of being wound into a device, and also using the cold rolling mill as a double cold rolling mill or mainly as a quadruple cold rolling mill and also using a plurality of multi-stage cold rolling mills arranged in succession. The desired cold-rolled stainless steel strip that has been normally or strongly work-hardened by cold-rolling is transferred to the double-side cold rolling mill on the downstream side or the rear tension reel device via the pinch roll device and the shearing device. I have determined that it can be rolled up.

Further, at least one front tension reel device arranged with a shearing device immediately after the first cold rolling mill from the upstream side and the first one arranged further following the front tension reel device. When a vibration preventing device having a centering mechanism for continuously passing stainless steel strips is disposed between the multi-stage cold rolling mill and the multi-stage cold rolling mill, cold rolling is performed by the plurality of multi-stage cold rolling mills arranged next to each other. It has been clarified that the stainless steel strip can be center-rolled and passed in a good vibration-proof state to perform cold rolling stably at high speed with excellent quality.

Further, if the vibration preventive device having the centering mechanism is a vibration preventive device having a centering mechanism composed of three rolls, a simple device with the smallest number of rolls can be used to continuously pass stainless steel. It was clarified that it is possible to perform cold rolling by performing stable striping in a good state in which centering can be performed without damaging the strip surface and vibration can be prevented.

Further, the tension bridle roll device equipped with a centering mechanism of a stainless steel strip continuously threaded through a cold rolling facility including the tension bridle roll device disposed on the upstream side. In this case, not only can the stainless steel strip be cold-rolled by passing it through the above-mentioned multiple multi-stage cold rolling mills in a good condition, but also the first cold rolling mill from the upstream side. It was also clarified that stable rolling can be performed in a good state while centering, and high-quality cold rolling can be performed at high speed.

Further, between the descaling device and the tension bridle roll device arranged on the upstream side of the cold rolling facility, the stainless steel strip is continuously passed through the cold rolling facility including the tension bridle roll device. If a looper device that stores the length of steel strip required for stripping is installed, the preceding stainless steel strip sheared by the shearing machine immediately after the first cold rolling mill from the upstream side of the cold rolling equipment will be provided. Until the tail end is taken up by the front tension reel, and further until it is removed from this front tension reel and the next start position for winding the succeeding stainless steel strip is formed, the continuous threading of the succeeding stainless steel strip is interrupted. In addition, it has been clarified that it is not necessary to perform the operation of passing the steel sheet at a very low speed rolling instead of stopping the steel sheet passage.

Further, a plurality of multi-stage cold rolling mills is provided.
If the diameter of the upper and lower work rolls of each 6-fold cold rolling mill is set to 220 to 300 mm, a heavy cold rolling mill is used. In cold rolling, it was also clarified that good cold rolling can be performed while applying a relatively large tension during rolling.

[0015]

EXAMPLE A cold rolling facility provided subsequently to a series of continuous annealing and descaling apparatus for stainless steel strip according to the present invention will be described in detail below. FIG. 1 is a front explanatory view showing a simplified overall configuration of an embodiment of a cold rolling facility provided subsequently to a series of continuous annealing and descaling apparatus for stainless steel strip according to the present invention. In the figure, reference numeral 1 denotes a stainless steel strip that is continuously threaded through the equipment of the present invention, and may be a hot rolled stainless steel strip or a cold rolled stainless steel strip. The stainless steel strip 1 is sequentially mounted on a payoff reel 2 for each coil, is fed out from the payoff reel 2, the traveling direction is changed by a deflector roll 3, and a pretreatment device 4 having a shearing machine, a welding machine and the like is used. The ends of the leading zone and the trailing zone are sheared and welded, and then continuously fed into this equipment, and the annealing device 6 and the descaling device 7, which are the main equipment of this equipment, pass through the looper device 5. The plate is continuously threaded at a predetermined speed without stopping.

Then, the descaling combination device is formed by annealing in the annealing furnace 6a of the annealing device 6 and cooled in the cooling device 6b to finish the annealing process, and subsequently, the descaling device 7 is combined with the mechanical treatment and the chemical treatment. Stainless steel strip 1 that has been descaled in 7a and washed and dried in hot water to be washed and dried in a hot water washing and drying device 7b and then descaled to finish descaling.
After both sides are appropriately side-trimmed by the side-trimming device 9, basically, as described in detail below, basically, the cold-rolling equipment, which is the main of this series of equipment, is continuously rolled and cold-rolled. Although it is rolled, the product to be manufactured is N because the stainless steel strip 1 is a hot rolled stainless steel strip.
o.1 In case of finishing, cold rolling may not be performed.

As means for applying a tension to the continuous strip cold-rolled stainless steel strip 1 in the cold rolling equipment over its entire length, a tension bridle roll device 10 on the upstream side and a double cooling on the downstream side are provided. Rolling mill or pinch roll device
And 17 are provided. Between these devices 10 and 17, a first cold rolling mill 11 from the upstream side and a plurality of multi-stage cold rolling mill groups 16 are arranged subsequent thereto. Immediately after the first cold rolling mill 11 from the upstream side, a shearing machine 12 is additionally provided, and at least one front tension reel device 14 that winds the stainless steel strip 1 through a deflector roll 13 is used. Are arranged. In addition, immediately after the double cold rolling mill or the pinch roll device 17 on the downstream side, the shearing machine 18
At least one rear tension reel device 20 for winding the stainless steel strip 1 through the pay-off reel 19 is provided.

The first cold rolling mill 11 from the upstream side will be described in more detail with reference to FIGS. 2, 3, 4 and 5. FIG. 2 shows an embodiment of the first cold rolling mill from the upstream side in the cold rolling equipment provided subsequently to the series of continuous annealing and descaling equipment for stainless steel strip according to the present invention. FIG. 3 is a front explanatory view showing a simplified state of a heavy cold rolling mill during rolling, and FIG. 3 shows a simplified unrolled state in which the quadruple cold rolling mill shown in FIG. 2 opens a pair of upper and lower work rolls. Front explanatory drawing, FIG. 4 is a front explanatory drawing showing a simplified state during rolling by using the first cold rolling mill from the upstream side shown in FIG. 2 as a double cold rolling mill, and FIG. 5 is shown in FIG. It is a front explanatory view which simplifies and shows the unrolled state which the double cold rolling mill opened a pair of upper and lower work rolls.

2 to 5, 11a is a housing of the first cold rolling mill 11 from the upstream side, 11ba and 11bb are a pair of upper and lower work rolls, and have work roll chocks 11ca and 11cb, respectively. There is. When the pair of upper and lower work rolls 11ba and 11bb are provided with upper and lower backup rolls 11da and 11db, respectively, they are configured as a quadruple cold rolling mill, and when they are not provided, as shown in FIGS. 2 using blocks 11ja and 11jb up and down
Configured as a heavy cold rolling mill. The upper and lower backup rolls 11ba and 11bb have backup roll chocks 11ea and 11eb, respectively. This housing 11a
Below the dummy block 11f installed in the upper part,
When used as a quadruple cold rolling mill, the load cell 11g is held between the upper backup roll chock 11ea and the upper block 11ja when used as a double cold rolling mill. Is provided. In the lower part of the housing 11a, between the lower backup roll chock 11eb when used as a quadruple cold rolling mill and the lower block 11jb when used as a double cold rolling mill. A truck 11h provided with wheels 11ha and a pressure reducing device 11i provided with a normal hydraulic pressure source are installed between them.

As shown in FIG. 2, in the state of being rolled as a quadruple cold rolling mill, the lowering device 11i below this is operated to push up the piston rod 11ib of the cylinder 11ia to move it up through the carriage 11h. The lower backup roll chocks 11eb are pushed upward, and the work rolls 11ba, 11bb and the backup rolls 11da, 11db are all in contact with each other and rolling is possible. On the other hand, as shown in FIG. 3, by lowering the piston rod 11ib of the cylinder 11ia downward until the wheels 11ha of the carriage 11h reach the base 11hb, a pair of upper and lower work rolls 11ba,
It is possible to open 11bb and also to open a gap between the lower work roll 11bb and the lower backup roll 11db.

In order to make it possible to change the first cold rolling mill 11 from the upstream side in such a roll configuration state, as a typical example, a quadruple cold rolling mill as shown in FIGS. When the roll arrangement is changed from the state of the rolling mill to the state of the double cold rolling mill as shown in FIGS. 4 and 5, the roll rearrangement is performed as described below. Although not specifically illustrated and described, in the roll arrangement state shown in FIG. 3, a roll changing carriage (not shown) waiting for the outside of the housing 11a of the cold rolling mill 11 is used to first set a pair of upper and lower rolls. The work rolls 11ba and 11bb together with the work roll chocks 11ca and 11cb are pulled out of the housing 11a at the same time, and then the stainless steel strip 1 stopped in the housing 11a is attached to the roll changing cart. The stainless steel strip 1 is moved so as to be inserted from one side (edge) of the U-shaped jig (not shown) into the U-shaped opening. Blocks of predetermined dimensions are attached to the upper surface and the lower surface of this U-shaped jig, respectively, and the work rolls 11ba, 11b previously extracted
bb and those work roll chocks 11ca and 11cb occupy the space occupied in the housing 11a by this block, and the upper and lower backup rolls 11da and 11db and their backup roll chocks 11ea and 11eb are integrated on the truck 11h. In a state like that,
This dolly 11h is pulled out of the housing 11a.

In this way, all the rolls 11ba, 11bb and 11da, 11db are pulled out from the housing 11h of the first cold rolling mill 11 from the upstream side, and then the strip is stopped or at a very low speed. Stainless steel strip moving in 1
Back to the upstream side to leave the inside of the housing 11h in an empty state, and then a double cold rolling mill in an open state as shown in FIG. 5 is preliminarily set on another carriage 11h (in this case, the backup roll chock 11ea). A block that functions as a spacer is arranged between the upper and lower sides of the workbench 11h. Then, the rolls are pushed into the housing 11a to complete the roll rearrangement to the state of the double cold rolling mill. On the contrary, after performing the roll reassembling as described above, from the state in which the first cold rolling mill 11 from the upstream side is configured as a double cold rolling mill to the configuration state of the quadruple cold rolling mill. When the rolls are recombined and returned to, the procedure for recombining the rolls described above may be performed in reverse.

From the constitutional state of this quadruple cold rolling mill, 2
In addition to changing the rolls to the configuration of the heavy cold rolling mill and vice versa, the backup rolls 11da and 11db in the housing 11a of the quadruple cold rolling mill are still installed. Roll out the abnormal work rolls 11ba, 11bb that have wear or surface fatigue or roll marks, and then install the new or normal work rolls 11ba, 11bb that have been prepared and prepared in advance. When reassembling to make a cold-rollable configuration, a pair of abnormal large-diameter work rolls 11ba, 11bb that wears the double cold rolling mill, causes surface fatigue, or causes roll marks etc. is pre-maintained. Prepared a pair of new or normal large diameter work rolls 11ba, 11
It is inevitable that the rolls are changed to bb to make them cold-rollable, but in each of these cases, the procedure up to that point can be reversed during or after the roll change procedure described above. It's good. From such an upstream 1
Even in the roll combination of a plurality of groups of multi-stage rolling mills 16 arranged after the base cold rolling mill 11, only the work rolls 16a and 16b are roll-combined to be in a rollable configuration state. In some cases, it is natural that rolls including intermediate rolls and backup rolls are changed all at once so that the rolls can be rolled. However, in each of these cases, existing known roll change means using a roll change truck or the like is used. Should be dealt with.

FIG. 6 is a simplified view of an embodiment of a vibration preventive device having a centering mechanism installed in a cold rolling facility provided subsequently to a series of continuous annealing and descaling devices for stainless steel strip according to the present invention. FIG.
As shown in FIG. 1 and described above, a cold rolling mill 11 that can be arbitrarily and easily changed to the first double or quadruple from the upstream side, and a plurality of multi-stage cold rollings arranged after the cold rolling mill 11 are arranged. 1 of 16 machines
Immediately after the cold rolling mill 11, a shearing machine 12,
Since the deflector roll 13 and at least one front tension reel device 14 are disposed too wide, the stainless steel strip 1 continuously threaded during this period vibrates and becomes more likely to meander. In order to prevent such vibration and meandering, on the downstream side of the front tension reel device 14,
For example, a vibration preventing device 15 having a centering mechanism composed of three rolls as shown in FIG. 6 is provided.

The anti-vibration device 15 having the centering mechanism illustrated in FIG. 6 is provided with three rolls 15a, 15b and 15c which are not rotationally driven. That is,
The two parallel rolls 15b and 15c, which are the rolls for continuously passing the stainless steel strip 1 and which are the receiving rolls of the vibration prevention device 15 having this centering mechanism, are attached to the fixed frame 15d as a base, respectively. Bearing 15b
It is rotatably supported by a, 15bb and 15ca, 15cb. Post frames 15ea and 15eb are vertically fixed at positions corresponding to the upstream side of the fixed frame 15d. The substantially U-shaped drive frame 15f pivotally attached to the post frames 15ea and 15eb by the connecting support shaft 15fa is pinned to the brackets 15eaa and 15ebb provided on the upper portions of the post frames 15ea and 15eb, respectively.
Ends 15gab and 15gbb of the ends of rods 15gaa and 15gba of cylinders 15ga and 15gb supported by 15ha and 15hb are mounted on the upper surface of the drive frame 15f.
It is supported by being connected to 15fcb with pins 15ia and 15ib. The drive frame 15f supported and configured as described above is rotated about the connection support shaft 15fa when both cylinders 15ga and 15gb are pressure-biased in conjunction with each other. The driven drive frame 15f has a roll 15a so that the other end can move up and down with one end as a fulcrum.
Is supported. That is, the roll 15a is arranged at an intermediate position between the receiving rolls 15b and 15c,
A bearing 15ab supported by a bracket and a pin (not visible in FIG. 6) on the lower surface of one side of the drive frame 15f so as to be vertically displaceable, and a U-shaped portion 15fb on the other side (front side in FIG. 6). Inside the opening of the frame 15f
Is supported by a rod of a cylinder 15j attached to the upper surface of the bearing 15aa in a suspended state, and is supported by a bearing 15aa configured to be slidable in the vertical direction.

The three rolls 15a, 1 thus configured
In the vibration preventing device 15 having the centering mechanism composed of 5b and 15c, the stainless steel strip 1 continuously threaded on the two receiving rolls 15b and 15c is operated by operating both cylinders 15ga and 15gb. As described above, the roll 15a rotatably supported by the drive frame 15f presses it to bend it by a predetermined amount. That is, the stainless steel strip 1 thus threaded is bent and restrained to prevent vibration, and at the same time, the pair of light emitters 15ka and the detection device 15ka arranged downstream of the vibration prevention device 15 having the centering mechanism. vessel
The drive frame 15f is continuously detected by detecting the meandering of the stainless steel strip 1 threaded by 15 kb, and through an adjustment control mechanism (not shown) which is appropriately provided based on the obtained detection value.
The cylinder 15j mounted on the upper surface of the roll 15a is operated and controlled, and the roll 15a supported by the cylinder 15j via the bearing 15aa is displaced in the vertical direction. By properly adjusting the amount of pressing on the surface, the meandering can be corrected and centered.

FIG. 7 is an illustration of an embodiment of a tension bridle device provided upstream of the cold rolling equipment provided subsequently to the series of continuous annealing and descaling equipment for stainless steel strip according to the present invention. It is a perspective explanatory view showing a simplified centering mechanism. In the series of continuous annealing and descaling apparatus for stainless steel strip according to the present invention, not only the tension is applied to the stainless steel strip 1 continuously threaded through this equipment, but also the stable and high-speed cooling is performed. In order to enable hot rolling and produce a stainless steel strip 1 of good quality such as plate thickness and shape, it is preferable to center this tension bridle roll device 10 with a centering mechanism. As illustrated in FIG. 7, the tension bridle roll device 10 is provided with a pair of rolls 10a and 10b around which the traveling stainless steel strip 1 is wound and neither is driven to rotate.

One roll 10a of the pair of rolls 10a, 10b is a bearing 10 mounted on a fixed frame 10c.
It is rotatably supported by aa and 10ab. On the other hand, the other roll 10b is rotatably supported by bearings 10ba and 10bb mounted on an inverted T-shaped integrated swing frame 10d. Thus, the swing frame 10d supporting the other roll 10b is supported by the fixed frame 10c at its upper end in a suspended state by the pin 10e, and the pin is attached to the bracket 10ca provided on the fixed frame 10c. The tip of the rod 10fa of the cylinder 10f supported by 10g is the swing frame 1 described above.
Since it is supported by the bracket 10da provided on 0d by the pin 10h, it can freely swing in the direction of the arrow around the pin 10e. Therefore, when the cylinder 10f is biased by pressure, the rocking frame 10d, that is, the rocking frame 1 is set with the pin 10e supported by the fixed frame 10c as a base point.
The roll 10b supported on 0d can be swung in the direction of the arrow with respect to the position-immobile roll 10a.

Therefore, in the centering mechanism of the tension bridle roll device 10 provided with the pair of rolls 10a and 10b around which the continuously traveling stainless steel strip 1 is wound, the tension bridle roll device 10 is provided downstream. The cylinder 10f is operated and controlled via an adjustment control mechanism (not shown) which is appropriately provided based on a detection value obtained by a meandering detector (not shown) of the stainless steel strip 1 disposed on the side. The position of the roll 10b can be pivotally displaced about the pin 10e to correct and center the meandering of the stainless steel strip 1 which is continuously running and running.

By the series of continuous annealing and descaling equipment described above, the stainless steel strip 1 that has been subjected to the annealing treatment and the descaling treatment is cold-rolled at once to finish it into the desired stainless steel strip 1. In order to manufacture, as described above, the first cold rolling mill 11 from the upstream side is preferably in a roll configuration state of a quadruple cold rolling mill, and further, a plurality of multi-stage multi-stages arranged subsequently. Cold rolling mill 16 has a diameter of 22
If cold rolling is performed using a group of cold rolling equipment in which at least a six-fold cold rolling mill having a pair of work rolls 16a and 16b of 0 to 330 mm in upper and lower sides is arranged, a hard stainless steel strip 1 will generate roll marks as much as possible. It is possible to roll more strongly and easily without doing so.

Moreover, in the case of manufacturing the stainless steel strip 1 having various surface finishes defined by JIS etc.,
For example, at the customer's request, manufacture No. 2D surface finish lightly cold-rolled with a matte roll or No. 2B surface finish finished by cold-rolling to an appropriate gloss to produce a cold-rolled stainless steel strip. In some cases, such as adjusting the plate thickness and shape, the manufacturing process efficiently and efficiently, and above all, even in the case where light cold rolling is required in order to progress with good quality and low cost, the equipment of the present invention can be used. In particular, if the cold rolling mill 11 in this equipment is properly used as a quadruple or double cold rolling mill as described above, the cold rolling is lightly cold rolled and the stainless steel strip 1 rolled by the front tension reel device 14 is used. It can be rolled up and manufactured.

Further, the tension bridle roll device is provided between the annealing and descaling device and the tension bridle roll device 10 arranged on the upstream side of the cold rolling equipment.
When the looper device 8 for storing the length of the steel strip required for continuously passing the stainless steel strip 1 was arranged in the cold rolling equipment including 10, the tail end was sheared by the shearing machine 12. Until the preceding stainless steel strip 1 is wound on the front tension reel device 14, or the leading stainless steel strip coil wound on the front tension reel 14 is removed from the reel, and the next starting stainless steel strip winding start posture is set. Until it is possible, it is not necessary to interrupt the continuous threading of the subsequent stainless steel strip 1 (stop the threading).

[0033]

According to the equipment of the present invention having the above-described configuration, as a means for generating a tension applied to the entire length of the stainless steel strip 1 which is continuously rolled in the cold rolling equipment and cold rolled,
A tension bridle roll device 10 is arranged on the upstream side of this cold rolling facility and a double cold rolling machine or a pinch roll device 17 is arranged on the downstream side. One unit from the upstream side is arranged between these devices 10, 17. The cold rolling mill 11 and the multi-stage cold rolling mill group 16 of a plurality of groups are further arranged, and 1 group is arranged from the upstream side.
Immediately after the base cold rolling mill 11, at least one front tension reel device 14 accompanied by a shearing machine 12 is disposed, and immediately after the downstream double cold rolling mill or pinch roll device 17. At least one rear surface tension reel device 20 having a shearing machine 18 attached thereto is arranged, and the first cold rolling mill 11 from the upstream side is a double cold rolling mill or a quadruple cold rolling mill. The roll arrangement in the cold rolling mill 11 can be arbitrarily changed so that the roll arrangement can be freely changed and cold rolling can be performed.

In the above-mentioned structure, the multi-stage cold rolling mill 16 comprises a multi-stage cold rolling mill group consisting of various types and combinations thereof, such as a quadruple cold rolling mill having the smallest number of rolls and a simple structure. It suffices if the multi-stage cold rolling mill 16 group has a desired configuration such as the desired thickness, width and shape.
The high-quality stainless steel strip 1 including the surface quality and the like may be arbitrarily set and arranged so as to be cold-rolled, but it is preferably made of a six-fold cold rolling mill. A pinch roll device 17 may be usually provided on the downstream side of the multi-stage cold rolling mill group 16 for generating tension, but it is more powerful for producing a stainless steel strip 1 having a thin plate thickness as much as possible. In the case of performing cold rolling in a cold rolling manner or performing light rolling for modifying the shape in order to produce a stainless steel strip 1 having a better shape, the double cold rolling mill is used instead of the pinch roll device 17. It is also possible to provide 17 and carry out light rolling while generating a predetermined tension within a required range.

In the equipment of the present invention thus constructed, at least the descaled stainless steel strip 1 can be cold-rolled all at once and can be efficiently processed in various cases and finished. In addition, as described below, it is made to be multifunctional and made to work. That is, when cold rolling the stainless steel strip 1 that has been subjected to the continuous annealing treatment and the descaling treatment by the equipment of the present invention, the stainless steel strips 1 are respectively arranged on the upstream side and the downstream side of the equipment of the present invention as tension generating means. By the tension bridle roll device 10 and the double cold rolling machine or the pinch roll device 17, a tension within a required range is applied to the stainless steel strip 1 which is continuously threaded through the facility of the present invention and cold rolled over the entire length thereof. To be done. Therefore, each cold rolling mill 1 arranged between the two devices 10 and 17
It is possible to stably perform cold rolling while applying a predetermined tension to the stainless steel strip 1 which is continuously threaded between the 1, 16 and the apparatus 15.

In the facility of the present invention, hot-rolled stainless steel which is an unrolled No. 1 finish that has been annealed and descaled, or a surface-finished product other than the No. 1 finish according to an agreement with the orderer. When the steel strip 1 is manufactured, a pair of upper and lower work rolls in the first cold rolling mill 11 from the upstream side, which can be arbitrarily changed to a double cold rolling mill or a quadruple cold rolling mill, is opened. A predetermined position of the continuously running stainless steel strip 1 is sheared by a shearing machine 12 provided immediately after the first cold rolling mill 11 from the upstream side, and the shearing head is moved to the next predetermined position. At least one shearing tail portion is wound up on the front tension reel device 14. In this case, up to the shearing tail portion at the time of the first shearing, the stainless steel strip 1 which has been cold-rolled by this cold-rolling equipment is finished as it is and wound on the rear surface tension reel device 20 provided at least one. All you have to do is remove it.

A shearing machine 12 provided immediately after the first cold rolling machine 11 from the upstream side sheared the stainless steel strip 1 continuously threaded at a predetermined position during the second shearing. After the shearing head, the front tension reel device continues.
It is divided into a case where it is wound around 14 and a case where it is wound around the rear surface tension reel device 20 as the cold rolled and rolled stainless steel strip 1. In the former case, the winding work mode changes depending on whether only one front tension reel device 14 is provided or two or more front tension reel devices 14 are provided. That is, when only one front tension reel device 14 is installed, the shearing machine
The tail end of the preceding stainless steel strip 1 sheared at 12 is wound around the front tension reel 14, and the coil of the preceding stainless steel strip 1 that has been wound up is removed from the reel, and the trailing stainless steel strip 1 Since it is necessary to wait for the next continuous passing of the subsequent stainless steel strip 1 until the winding start posture is achieved, the following stainless steel strip 1 is passed at an extremely low speed or is annealed and removed. A looper device 8 arranged between the scale device and a tension bridle roll device 10 arranged on the upstream side of the cold rolling equipment is used to store the next trailing stainless steel strip 1 and temporarily stop striping. All you have to do is make it. On the other hand, in the latter case, the shearing head of the trailing stainless steel strip is threaded between the multi-stage cold rolling mills 16 and the equipment 15 in the cold rolling equipment which is an unthreaded plate and is in an empty state. It is wound around the reel 20 and given a predetermined tension by the above-mentioned tension generating means 10 and 17, and then cold rolling is restarted to wind up the rolled stainless steel strip 1.

Similarly, when the stainless steel strip 1 that has been similarly annealed and descaled is finished into the lightly cold-rolled stainless steel strip 1, when manufacturing from the upstream side,
Only the basic cold rolling mill 11 is arbitrarily changed to a double cold rolling mill or a quadruple cold rolling mill as needed, and is selectively used while being lightly cold rolled to finish. A front tension reel in which a predetermined position is sheared by a shearing machine 12 provided immediately after the basic cold rolling mill 11 and at least one unit from the shearing head to the shearing tail at the next predetermined position is arranged. It is wound around the device 14. In this case as well, the shear tail portion at the time of the first shearing and the shearing head at the time of the second shearing include the case where the lightly cold-rolled stainless steel strip 1 is continuously wound as described above. Similarly, it may be wound up on the front or rear tension reel device 14 or 20, respectively.

In order to finish the annealing and descaling of the stainless steel strip 1 into a stainless steel strip 1 having a thickness as thin as possible, the cold rolling is most strongly performed. The first cold rolling mill 11 from the upstream side is always used as a quadruple cold rolling mill, and further, a group of multi-stage cold rolling mills 16 arranged in series is used. A double cold rolling mill 17 is used instead of the pinch roll device normally arranged on the downstream side, and the stainless steel strip 1 is cold-rolled all at once to a desired quality such as sheet thickness and shape. After being finished, the double cold rolling mill 17 is sheared by a shearing machine 18 provided immediately after the double cold rolling mill 17 and wound on a rear surface tension reel device 20 provided at least one of them.

Further, as described above, the cold rolling equipment mainly composed of the first cold rolling mill 11 from the upstream side and a plurality of multi-stage cold rolling mill groups 16 arranged in succession is provided. If roll marks or the like are generated on the surface of the rolled stainless steel strip 1 due to this cold rolling in a series of installed facilities, continuous rolling is carried out in this series of facilities for cold rolling. It is necessary to temporarily stop the passing of the rolled stainless steel strip 1 and then inspect and check the defective work rolls, etc., which need to be reassembled. In any roll combination of this cold rolling mill 11 and a multi-stage multi-stage cold rolling mill 16 group, as mentioned above, not only the work rolls but also the intermediate work rolls in accordance with the usual roll reconfiguration schedule. Rolls and backup rolls can be rolled by reassembling all rolls at once, and similarly, only work rolls with wear or surface fatigue can be recombined according to the roll reshuffle schedule and rolled. As a matter of course, there is a case in which the defective work rolls or the like which are investigated and confirmed as the roll mark generation source are intensively recombined into a rollable configuration state as an abnormal measure. There is no problem in roll reshuffling performed according to such a roll reshuffling schedule, but if it is a very troublesome problem, it is roll reshuffling such as work rolls performed as an abnormal measure or other equipment failure or accident, This means that the recovery time for setting these into a rollable configuration is long.

However, since it has become possible to efficiently perform the above-mentioned roll change and the change work roll only change in a very short time today, it is possible to continuously perform at least the descaling process from the upstream side. The rolling of the stainless steel strip 1 that has been passed through the plate must be temporarily stopped during the reassembling time in the rolling mill, but the stainless steel strip 1 The length of the looper device 8 can be stored and absorbed in the looper device 8 which will be described later and will be described later, and the looper device 8 has a capacity that can be normally absorbed unless the recovery time is long and there is no problem.
By arranging and coping with the above, it is possible to smoothly and continuously pass the plate in a series of facilities without any trouble.

When the recovery time is long and there is a problem, that is, in the worst case, the cause is on the group side of multiple multi-stage cold rolling mills 16, the multi-stage cold rolling mill 16 roll assembly. While carrying out restoration work including replacement, hot-rolled or cold-rolled stainless steel strip 1 which has been annealed and descaled as described above, and stainless steel strip which has been lightly cold-rolled after the same treatment. 1 is opened or lightly cold-rolled by a pair of upper and lower work rolls of a cold rolling mill 11 that can be arbitrarily changed to double or quadruple on the upstream side, and shearing is provided immediately after this. The machine 12 can wind the front tension reel device 14 while shearing the respective predetermined positions. On the other hand, when the worst situation as described above occurs in the cold rolling mill 11 arranged on the upstream side of the group of 16 multi-stage cold rolling mills 16, the roll set of the cold rolling mill 11 is set. It is not possible to perform replacement, and it is of course not possible to perform cold rolling, but the pair of upper and lower work rolls of this cold rolling machine 11 is opened and at least an unrolled sheet that has undergone annealing and descaling Only the hot or cold rolled stainless steel strip 1 can be wound on the front tension reel device 14 in the same manner. That is, in the continuous annealing and descaling rolling equipment in this series of equipment, even if the stainless steel strip 1 has to be stopped without passing the strip, it is not necessary to stop the passing of the strip throughout the equipment, It is possible to reduce or avoid the degree of various harmful effects caused thereby.

Further, in the facility of the present invention, it is preferable to provide a vibration preventing device 15 having a centering mechanism composed of, for example, three rolls. This is because, in the facility of the present invention, the cold rolling mill 11 which can be arbitrarily changed to double or quadruple from the upstream side to the first multi-stage cold rolling mill 16 which is arranged subsequent to the cold rolling mill 11 is arranged. As described above, the distance from the first machine is too wide to install the shearing machine 12 immediately after the first cold rolling machine 11 from the upstream side and to arrange at least one front tension reel device 14. During this time, the stainless steel strip 1 continuously threaded vibrates and meanders, and high-speed rolling cannot be performed, resulting in unstable cold rolling, and it is not possible to obtain the rolled stainless steel strip 1 of good quality. It is provided to prevent such vibration and meandering.

Further, in the facility of the present invention, the tension bridle roll device 10 provided with the centering mechanism of the continuously threaded stainless steel strip 1 is used as the tension bridle roll device 10 arranged on the upstream side in the cold rolling facility.
Is preferably provided. This is because, by operating such a centering mechanism in the equipment of the present invention, not only the tension is applied to the stainless steel strip 1 continuously threaded through the equipment in the most upstream of the equipment of the present invention, but also the meandering of the stainless steel strip 1 is prevented. This is because it is possible to always supply the steel sheet normally while preventing it, so that stable and high-speed cold rolling can be performed, and the stainless steel strip 1 of good quality such as thickness and shape can be manufactured. ..

Further, in the equipment of the present invention, the steel strip 1 necessary for allowing the stainless steel strip 1 to be substantially continuously threaded in the cold rolling equipment including the tension bridle roll device 10 as described above. A looper device 8 capable of storing and absorbing the length in advance is arranged between the annealing and descaling device 7 and a tension bridle roll device 10 arranged on the most upstream side of the cold rolling equipment. Preferably.
This is because the preceding stainless steel strip 1 sheared by the shearing machine 12 has its tail end sheared by the shearing machine 12 and the front tension reel.
The coil of the preceding stainless steel strip 1 wound on the front tension reel 14 is further removed from the reel until it is completely wound on the reel 14, especially when there is only one tension reel device 14, and the subsequent trailing stainless steel is taken. Until the winding start position of the steel strip 1 is established, it is necessary to prevent the phenomenon in which the subsequent continuous passing of the subsequent stainless steel strip 1 is interrupted, that is, the strip is stopped and kept waiting. It will not happen. That is, an annealing furnace which is arranged on the upstream side of the facility of the present invention and which must surely continuously pass the stainless steel strip 1 at a stripping speed within a preset range without stopping the stripping. As described below, the stainless steel strip 1 continuously supplied to the cold rolling equipment from the annealing equipment 6 having 6a and the descaling equipment 7 arranged subsequent to the annealing equipment 6 is stopped. There are various cases that must be kept waiting, but these cases must be prevented.

Specifically, after completely winding up to the tail end of the preceding stainless steel strip 1 on the front tension reel 14, the following stainless steel strip 1 is passed through the cold rolling equipment and the shearing machine 18. Gradually thread at least one rear-side tension reel device 20 and wind it around this reel to give a predetermined tension to stop cold rolling and wait until the cold rolling start posture is achieved. It also appears when there is something to do. At least when the stainless steel strip 1 is cold-rolled by this cold rolling equipment by shearing with the shearing machine 18 and the preceding and following stainless steel strips are wound up by the rear surface tension reel device 20 for each steel strip 1, Until the tail end of the preceding stainless steel strip 1 is completely wound up on the rear tension reel 20, and only one rear tension reel device is used.
When 20 is not provided, the coil of the preceding stainless steel strip 1 wound on the rear surface tension reel 20 is further removed from the reel until the next starting stainless steel strip 1 winding start position is formed. This subsequent stainless steel strip 1
Stopping the strips and waiting them, or if the strips are stopped in this manner, a pair of upper and lower work rolls of each cold rolling mill in this cold rolling facility is called a stop mark on the surface of the stainless steel strip 1. Such problems occur because marks (indentations) occur, the surface texture of the steel strip changes, such as gloss, and plate thickness fluctuations increase, resulting in defective plate thickness, which lowers quality and yield. In order to avoid or prevent it, there may be a case where the rolling is not stopped and the rolling is carried out at a very low speed rolling state, and finally it is wound on the rear surface tension reel 20.

Further, as described above, a fatal roll mark may occur on the surface of the stainless steel strip 1 due to such cold rolling. Regarding the countermeasure technology for preventing the generation of such roll marks, detailed description thereof is omitted because it is not a problem to be solved by the present invention, but immediately after the start of cold rolling and as necessary in cold rolling. Rolling may be stopped at several points along the way, or the rolling may be performed at a low speed, and the surface of the stainless steel strip 1 may be inspected to check whether roll marks occur. Moreover, once a roll mark has been generated, the work roll that is the source of the roll mark is definitely inspected by forming a flaw or the like, and the work roll that is the source of the roll mark is inspected and confirmed. Also, since it is necessary to change the rolls to new or maintenance work rolls that have been prepared separately and do not have flaws, etc., it is necessary to stop the threading for a considerable amount of time even during cold rolling. In some cases, cold rolling must be interrupted or stopped.

As described above in detail, in any case, in the facility of the present invention, the stainless steel strip 1 which is surely continuously supplied, cold-rolled successively, and then wound on the rear surface tension reel 20 is provided. For various reasons, it is unavoidable to stop rolling, or it is unavoidable to perform rolling in a very low speed rolling state or a low speed rolling state. In these cases, when the rolling is stopped by changing the rolls, as described above, the rolling is stopped by changing the rolls of the first cold rolling mill 11 from the upstream side, and the case where a plurality of multi-stage cold rolling mills 16 are used. Although the passing condition of the stainless steel strip 1 is different from the case where the rolling is stopped by changing the rolls, there is a case in which the rolling must be temporarily stopped in both cases. In such cases, the looper device 8 stores and absorbs the required length of the steel strip 1 in advance, or discharges the once absorbed length of the steel strip 1. The stainless steel strip 1 can be continuously passed and cold-rolled as much as possible without stopping the passage of the strip, and the above-mentioned various problems can be prevented.

In the facility of the present invention, a plurality of multi-stage cold rolling mills 16 have a pair of upper and lower work rolls having a diameter of 2
It is preferable to arrange a 6-fold cold rolling mill of 20 to 300 mm. This is because, in general, stainless steel strips have higher deformation resistance and work-hardening than steel strips of ordinary steel, so rolling with a work roll having a diameter as small as possible while applying relatively large tension during cold rolling is recommended. Since it is advantageous and expedient, the diameter of a pair of upper and lower work rolls in a tandem-type cold rolling mill that normally cold-rolls a steel strip such as ordinary steel is in the range of 400 to 600 mm. The multi-stage cold rolling mill 16 used has a very small diameter, and the hard stainless steel strip 1 is easily rolled by the multi-stage cold rolling mill 16 having the work rolls 16a and 16b having such a small diameter. Because you can. Therefore, it is preferable to perform cold rolling by using work rolls 16a and 16b having a diameter as small as possible, but as described above, as a countermeasure technique for preventing the occurrence of a flaw or the like that is a roll mark generation source on the surface of this work roll, For example, when a brush roll with a small diameter is driven to rotate and brought into contact with the work roll surface, and foreign matter that causes the occurrence of such dents is attached or pressure-bonded to the work roll surface However, since an appropriate space is required to allow the small-sized blank roll to be rotationally driven so that it can be contacted freely, this work roll cannot be made too small in diameter, and the roll minimum diameter must be set to about 220 mm. There is no.

[0050]

As described in detail above, the cold rolling equipment provided subsequently to the series of continuous annealing and descaling equipment for the stainless steel strip according to the present invention has the tension bridle roll equipment on the upstream side and the downstream equipment. A double cold rolling mill or a pinch roll device is installed between the tension cold bridle roll device on the upstream side and the double cold mill or pinch roll device on the downstream side from the upstream side. A cold rolling mill and a plurality of multi-stage cold rolling mills are arranged. Immediately after the first cold rolling mill from the upstream side, unrolled or the first cold rolling mill from the upstream side. At least one front tension reel device that winds the stainless steel strip cold-rolled by the hot rolling mill through the shearing machine is further provided immediately after the downstream double cold rolling mill or the pinch roll device. Cold-rolled strips on a cold rolling mill Since at least one rear-face tension reel device that winds the stainless steel strip through the shearing machine is provided, it is possible to obtain the hot-rolled material and the cold-rolled material that have been subjected to the annealing treatment and the descaling treatment. Any of the above stainless steel strips can be processed without stopping the operation of the annealing and descaling equipment.
No. 1 specified in 306 "Hot Rolled Stainless Steel Strip"
Manufacture various surface finish stainless steel strips such as finish and surface finishes other than No. 1 finish by agreement with the orderer, No. 2D finish and No. 2B finish specified in JISG4307 "Cold rolled stainless steel strip". This is a multi-functional equipment that can be used, and even if a roll mark appears on the surface of the stainless steel strip due to cold rolling in the cold rolling equipment, the extent of various harmful effects caused by it will be reduced or avoided as much as possible. The equipment is constructed so that it can be operated efficiently and stably, and it is possible to achieve various profits based on the target process-saving process. It has a great industrial value.

[Brief description of drawings]

FIG. 1 is a front explanatory view showing a simplified overall configuration of an embodiment of a cold rolling facility provided subsequently to a series of continuous annealing and descaling apparatus for stainless steel strip according to the present invention.

FIG. 2 shows an example of the first cold rolling mill from the upstream side in the cold rolling equipment provided subsequently to the series of continuous annealing and descaling equipment for stainless steel strip according to the present invention. It is a front explanatory view which simplifies and shows the state during rolling as a quadruple cold rolling mill.

FIG. 3 is a front explanatory view showing a simplified unrolled state in which the quadruple cold rolling mill shown in FIG. 2 opens a pair of upper and lower work rolls.

FIG. 4 shows the first cold rolling mill from the upstream side shown in FIG.
It is a front explanatory view which simplifies and shows the state during rolling as a heavy cold rolling mill.

5 is a front explanatory view showing a simplified unrolled state in which the double cold rolling mill shown in FIG. 4 opens a pair of upper and lower work rolls; FIG.

FIG. 6 is a simplified view of an embodiment of a vibration prevention device having a centering mechanism provided in a cold rolling facility that is subsequently provided in a series of continuous annealing and descaling equipment for stainless steel strip according to the present invention. FIG.

FIG. 7 is attached to an embodiment of a tension bridle device disposed upstream of a cold rolling facility that is disposed subsequently to a series of continuous annealing and descaling devices for stainless steel strip according to the present invention. It is a perspective explanatory view which simplifies and shows a centering mechanism.

[Explanation of symbols]

 1 Stainless steel strip 2 Payoff reel 3 Deflector roll 4 Pretreatment device 5 Looper device 6 Annealing device 6a Annealing furnace 6b Cooling device 7 Descaling device 7a Descaling combination device 7b Hot water washing / drying treatment device 8 Looper device 9 Side trimming device 10 Tension Bridle roll device 10a, 10b Roll 10aa, 10ab Bearing 10ba, 10bb Bearing 10c Fixed frame 10ca Bracket 10d Oscillating frame 10da Bracket 10e Pin 10f Cylinder 10fa Rod 10g Pin 10h Pin 11 1st cold rolling mill from upstream side 11a Housing 11ba Upper work roll 11bb Lower work roll 11ca, 11cb Work roll chock 11da Upper backup roll 11db Lower backup roll 11ea Upper backup roll chock 11eb Lower backup roll chock 11f Dummy block 11g Load cell 11h Truck 11ha Wheel 11hb Pedestal 11i Roll down Installation 11ia Cylinder 11ib Piston rod 11ja Upper block 11jb Lower block 12 Shearing machine 13 Deflector roll 14 Front tension reel device 15 Anti-vibration device with centering mechanism 15a, 15b, 15c Roll 15aa, 15ab, 15ba, 15bb, 15ca, 15cb Bearing 15d Fixed frame 15ea, 15eb Post frame 15eaa, 15ebb Bracket 15f Drive frame 15fa Connection support shaft 15fb C-shaped part 15fca, 15fcb Bracket 15ga, 15gb Cylinder 15gaa, 15gba Rod 15gab, 15gbb End 15ha, 15hb Pin 15ia, 15ib Pin 15j Cylinder 15ka Light emitter 15kb Detector 16 Multiple multi-stage cold rolling mills 16a, 16b Work rolls 17 Double cold rolling mill or pinch roll device on the downstream side 18 Shearing machine 19 Deflector rolls 20 Rear tension reel device

Claims (7)

[Claims] 1. A cold rolling facility for continuously passing stainless steel strip, which is arranged mainly in a series of equipment subsequent to an annealing and descaling device, wherein tension is provided upstream of the cold rolling facility. A bridle roll device and a double cold rolling mill or a pinch roll device on the downstream side are provided, and the tension bridle roll device on the upstream side and the twin bridle roll device on the downstream side.
A first cold rolling mill from the upstream side and a plurality of multi-stage cold rolling mills are arranged between the heavy cold rolling mill or the pinch roll device, and the first cold rolling mill from the upstream side is arranged. Immediately after the cold rolling mill, there is further provided at least one front tension reel device for winding a stainless steel strip unrolled or cold rolled by the first cold rolling mill from the upstream side through a shearing machine, Immediately after the downstream double cold rolling mill or the pinch roll device, at least one rear tension reel device for winding the stainless steel strip cold-rolled by the multi-stage cold rolling mill through the shearing machine is provided. A cold rolling installation subsequent to a series of continuous annealing and descaling equipment for stainless steel strips characterized in that it is provided. 2. The first cold rolling mill from the upstream side has a state in which a pair of upper and lower work rolls are opened, and a cold rolling mill as a double cold rolling mill or a quadruple cold rolling mill. 2. A series of continuous annealing and descaling apparatus for stainless steel strip according to claim 1, wherein the cold rolling mill is a cold rolling mill having a configuration capable of changing the roll arrangement and roll rearrangement in the cold rolling mill. Cold rolling equipment to be installed after. 3. At least one front tension reel device which is arranged immediately after the first cold rolling mill from the upstream side with a shearing machine, and the first tension reel device which is arranged subsequently. 3. A series of continuous annealing for stainless steel strips according to claim 1 or 2, wherein a vibration preventive device having a centering mechanism for stainless steel strips to be continuously threaded is provided between the multi-stage cold rolling mill and the multi-stage cold rolling mill. And a cold rolling facility installed after the descaling device. 4. The cooling device provided after the series of continuous annealing and descaling device for stainless steel strip according to claim 3, wherein the anti-vibration device having the centering mechanism is a device constituted by three rolls. Hot rolling equipment. 5. The tension bridle roll device provided on the upstream side is a tension bridle roll device provided with a centering mechanism for a stainless steel strip continuously threaded in a cold rolling facility including the tension bridle roll device. A cold rolling installation, which is subsequently arranged in a series of continuous annealing and descaling apparatus for stainless steel strip according to any one of claims 1 to 4. 6. A stainless steel strip is continuously provided in a cold rolling facility including the tension bridle roll device between an annealing and descaling device and a tension bridle roll device disposed on the upstream side of the cold rolling facility. A series of continuous annealing and descaling devices for stainless steel strips according to any one of claims 1 to 5, which is provided with a looper device for storing the length of the strip required for passing. Cold rolling equipment installed. 7. A plurality of multi-stage cold rolling mills are six-fold cold rolling mills, and a diameter of a pair of upper and lower work rolls of each six-fold cold rolling mill is 220 to 300 mm. A cold rolling facility that is subsequently disposed in the series of continuous annealing and descaling apparatus for stainless steel strip according to any one of 1.