JP2983751B2 - Cold rolling equipment following a series of continuous annealing and descaling equipment for stainless steel strip - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention follows mainly an annealing and descaling apparatus for continuously passing stainless steel strip,
The stainless steel strip that has been subjected to this annealing treatment and descaling treatment (a hot-rolled stainless steel strip and a cold-rolled stainless steel strip may be used) continuously without stopping the operation of the annealing and descaling equipment. The present invention relates to a series of continuous annealing and descaling equipment for a stainless steel strip which can be processed in a continuous manner, and to a cold rolling equipment which is disposed subsequently.

[0002]

2. Description of the Related Art Generally, a hot-rolled stainless steel strip is hot-rolled on a steel strip surface in order to improve the structure by eliminating a hot-rolled structure and to soften a steel strip work-hardened by hot rolling. In order to remove the thick and dense oxide scale caused by the above, an annealing apparatus and a combination of mechanical treatment and chemical treatment are mainly used as disclosed in, for example, JP-A-59-41482. The sheet is continuously passed through a series of steps of the annealing and descaling device including the descaling device, and subjected to the annealing process and the descaling process. In this case, in a specific hot-rolled stainless steel strip, for example, after performing only the annealing treatment in a step having a box-type annealing furnace separately disposed, the series of annealing and descaling devices are disposed. In some cases, the sheet is continuously passed through the process and only the descaling treatment is performed.

[0003] The hot-rolled stainless steel strip which has been subjected to the annealing treatment and the descaling treatment as described above is then used in various types such as reversing and tandem types equipped with various types and cold rolling mills combined with the various types. The rolling process in which the cold rolling equipment of the type is arranged is subjected to cold rolling by passing through the steel strips or continuously. The cold-rolled stainless steel strip that has been subjected to such cold rolling and work-hardened is substantially the same as that described above in order to further soften and modify as necessary and to remove oxide scale generated by annealing. An annealing process and a descaling process are performed by continuously passing through a similar series of steps in which an annealing and descaling device is arranged.

[0004] When the cold-rolled stainless steel strip which has been subjected to such annealing treatment and descaling treatment is further cold-rolled and thinned, the series of annealing and descaling devices described above and the cold rolling are used. The equipment is manufactured by repeatedly passing through each process in which the equipment is arranged and performing each of the processes. In other words, in any case, the stainless steel strip is manufactured by passing each of the stainless steel strips as needed in each step in the individual rolling step, the step in which the annealing and descaling devices are arranged.

[0005] However, the quality and yield are improved, the amount of steel strip coil transport processing is reduced, the equipment such as vehicles required for this transport is reduced, the amount of steel strip coil in-process between each process is reduced, and these savings are also achieved. Rationalization of logistics improvement such as narrowing of steel strip coil storage space and effective use of space by reduction and reduction, shortening of required manufacturing process days by shortening the process, and direct and indirect by reducing consumption of electricity, water, slip paper, etc. In order to save energy and reduce costs, improve workability, efficiency and productivity through labor saving and high-speed automatic operation, effectively use land (site), and reduce costs, stainless steel strip In manufacturing, too, a series of equipment (hereinafter, referred to as a series of equipment in which a separate annealing and descaling apparatus and a cold rolling equipment are connected and integrated as originally described, Ryakuka to about to be merely suggested arranged one step of may be referred to as continuous annealing descaling rolling equipment) is also installed.

[0006] The stainless steel strip which has been subjected to annealing and descaling by continuously passing through a series of processes in which a series of equipment integrated as described above is arranged will be continuously cold rolled and finished at once. However, a serious 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 roll marks is also a problem, but rather the roll marks must be inspected with the plate stopped or at low speed rolling, and once checked. When the occurrence of a roll mark is confirmed, stop the threading and check the work roll, which is the source of the roll mark, and after confirming that the relevant work roll, etc., must be re-rolled. Various stoppages caused by rolling are separated from the conventional cold rolling equipment, and if the processes are completely separate processes where the annealing and descaling equipment is arranged, continuous passing without any stoppage The biggest problem is that the passing process must be stopped because it is affected by the relevant process part that should have been.

[0007]

SUMMARY OF THE INVENTION Accordingly, the present invention relates to the production of a stainless steel strip, in which an annealing and descaling apparatus originally arranged in a separate process and a cold rolling facility are connected and integrated. In order to reduce the number of processes, in a series of facilities in which a cold rolling facility is arranged mainly following an annealing and descaling apparatus for a continuously passing stainless steel strip, that is, a series of continuous annealing descaling rolling facilities, Basically, it is a facility capable of producing a desired cold-rolled stainless steel strip by cold rolling the stainless steel strip which has been mainly subjected to the annealing treatment and the descaling treatment at once, and b) various surface finishing ( No.1 finish specified in JIS G4306 "Hot rolled stainless steel strip", surface finish other than No. 1 finish in agreement with orderer, JIS G4307
This is a multifunctional facility that can manufacture stainless steel strips of No. 2D finish and No. 2B finish specified in “Cold rolled stainless steel strip”. C) Cold rolling as described above Even if roll marks are generated on the stainless steel strip surface due to cold rolling in the equipment, the equipment configuration has been provided with means that can minimize or avoid the degree of various adverse effects caused by the occurrence of roll marks. D) It is an object to configure such a series of facilities so that they can operate efficiently and stably, and can achieve various benefits based on the targeted saving of processes.

[0008]

Means for Solving the Problems The inventors of the present invention have conducted intensive studies to solve the above-mentioned problems, and as a result, they have been installed in a series of facilities mainly following an annealing and descaling device for a stainless steel strip which is continuously passed. As the cold rolling equipment to be provided, a tension bridle roll device and a double cold rolling mill or a pinch roll device are provided as tension generating means on the upstream side of the cold rolling equipment and on the downstream side, and the tension on the upstream side is provided. Between the bridle roll device and the downstream double cold rolling mill or pinch roll device, a first cold rolling mill and a plurality of multi-stage cold rolling mills from the upstream side are arranged, and the upstream At least one front surface, through a shearing machine, of a stainless steel strip that has not been rolled immediately after the first cold rolling mill from the side or that has been cold-rolled by the first cold rolling mill from the upstream side. The tension reel device is Immediately after the double cold rolling mill or pinch roll device on the side, at least one rear tension reel device for winding a stainless steel strip cold-rolled by the multi-stage cold rolling mill via a shearing machine is provided. The inventors of the present invention have determined what should be done and completed the present invention.

Further, the first cold rolling mill from the upstream side can be cold rolled as a double cold rolling mill or a quadruple cold rolling mill with a pair of upper and lower work rolls opened. If it is possible to change the arrangement of the rolls and change the rolls in the cold rolling mill arbitrarily, a pair of upper and lower work rolls can be opened to perform main annealing and descaling. Of the unrolled stainless steel strip which has finished at least the descaling process can be immediately wound up as a hot-rolled stainless steel strip having the No. 1 finish through a shearing machine. Cold rolled lightly by using as a double cold rolling mill or a quadruple cold rolling mill to immediately produce a cold rolled stainless steel strip with No. 2D finish or No. 2B finish, etc., through a shearing machine and a front tensioner. Lee The cold rolling mill can be used as a double cold rolling mill or a quadruple cold rolling mill, and a plurality of multi-stage cold rolling mills arranged in succession can be used. The desired cold-rolled stainless steel strip, which is normally or strongly cold-worked by cold rolling, is transferred to a rear tension reel device via a downstream double cold rolling mill or a pinch roll device and a shearing device. It was determined that it could be wound up.

[0010] Further, at least one front tension reel device, which is provided with a shearing machine immediately after the first cold rolling mill from the upstream side, is further arranged in a first subsequent one. When a vibration preventing device having a centering mechanism for a stainless steel strip that passes continuously is provided between the multi-stage cold rolling mill, cold rolling is performed by a plurality of the subsequently arranged multi-stage cold rolling mills. It has been clarified that the stainless steel strip can be passed through in a good vibration-preventing state while being centered to perform high-speed and stable cold rolling to a state of excellent quality.

Further, if the vibration preventing device having the centering mechanism is a vibration preventing device having a centering mechanism composed of three rolls, the stainless steel which is continuously passed with a simple device using the least number of rolls can be used. The inventor has found out that it is possible to perform cold rolling with stable passing in a good state in which centering can be performed without damaging the belt surface and vibration can be prevented.

[0012] Further, the tension bridle roll device provided on the upstream side is provided with a tension bridle roll device having a centering mechanism for a stainless steel strip continuously passed through a cold rolling facility including the tension bridle roll device. Then, not only can the stainless steel strip be passed through the plurality of multi-stage cold rolling mills described above in good condition and cold rolled, but also the first cold rolling mill from the upstream side can be used. It has been found that cold rolling can be performed at a high speed with good quality and stable threading in good condition while centering.

[0013] Further, between the descaling device and the tension bridle roll device arranged upstream of the cold rolling device, a stainless steel strip is continuously passed through the cold rolling device including the tension bridle roll device. If a looper device that stores the length of the steel strip required for sheeting is provided, the preceding stainless steel strip that has been sheared by the shearing machine immediately after the first cold rolling mill from the upstream side of the cold rolling equipment can be obtained. The continuous passing of the following stainless steel strip is interrupted until the tail end is wound on the front tension reel, and then pulled out from the front tension reel and the winding posture of the next succeeding stainless steel strip is formed. It was also found out that it was not necessary to perform the operation of passing the sheet in a very slow rolling state instead of stopping the sheet passing.

Further, a plurality of multi-stage cold rolling mills
If it is a heavy cold rolling mill, and the diameter of a pair of upper and lower work rolls of each 6-fold cold rolling mill is 220 to 300 mm, the deformation resistance is higher than that of a steel strip of ordinary steel. In cold rolling, they have also found that cold rolling can be favorably performed while applying a relatively large tension during rolling.

[0015]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a series of continuous annealing and descaling apparatus for a stainless steel strip according to the present invention. FIG. 1 is a front explanatory view schematically showing the entire configuration of one embodiment of a cold rolling facility provided subsequently to a series of continuous annealing and descaling devices for a stainless steel strip according to the present invention. In the figure, reference numeral 1 denotes a stainless steel strip continuously passed through the facility of the present invention, which 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 pay-off reel 2 for each coil, is unreeled from the pay-off reel 2, its traveling direction is changed by a deflector roll 3, and the stainless steel strip 1 is fed to a pre-processing device 4 having a shearing machine, a welding machine, and the like. The ends of the leading and trailing zones are sheared and welded, and are continuously fed into the facility. The looper device 5 is used to supply the main annealing device 6 and the descaling device 7 which are the main components of the facility. The sheet is continuously passed at a predetermined speed without stopping.

A descaling combination device constituted by combining the mechanical treatment and the chemical treatment of the descaling device 7 is completed by annealing in the annealing furnace 6a of the annealing device 6 and cooling by the cooling device 6b. A stainless steel strip 1 that has been descaled in 7a and cleaned and dried in a hot water washing and drying treatment apparatus 7b for washing with hot water and drying, and has finished descaling.
After the both sides are appropriately trimmed by the side trimming device 9, as described in detail below, the sheet is basically continuously passed through a cold rolling facility, which is a main part of the series of facilities, so that the cold rolling is performed. The stainless steel strip 1 is a hot-rolled stainless steel strip and the product to be manufactured is N
o. In some cases such as finishing, cold rolling may not be possible.

As means for applying tension over the entire length of the stainless steel strip 1 which is continuously passed and cold-rolled in a cold rolling facility, a tension bridle roll device 10 is provided on the upstream side, and a double cooling is provided on the downstream side. Cold rolling mill or pinch roll device
17 and are arranged. Between these devices 10 and 17, a first cold rolling mill 11 from the upstream side and a plurality of multi-stage cold rolling mills 16 are further arranged. 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 for winding the stainless steel strip 1 through a deflector roll 13. Are arranged. Immediately after the downstream double cold rolling mill or pinch roll device 17, a shearing machine 18 is provided.
At least one rear tension reel device 20 for winding the stainless steel strip 1 through a payoff reel 19 is provided.

The first cold rolling mill 11 from the upstream side will be described in more detail with reference to FIGS. FIG. 2 shows one embodiment of the first cold rolling mill from the upstream side in the cold rolling equipment installed after the series of continuous annealing and descaling equipment for stainless steel strip according to the present invention. FIG. 3 is an explanatory front view schematically showing a state during rolling as a heavy cold rolling mill. FIG. 3 is a simplified view showing an unrolled state in which a pair of upper and lower work rolls are opened by the quadruple cold rolling mill shown in FIG. FIG. 4 is a front view schematically showing the state during rolling as 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. FIG. 3 is a simplified front view showing a non-rolled state in which a pair of upper and lower work rolls are opened by a double cold rolling mill.

2 to 5, reference numeral 11a denotes a housing of the first cold rolling mill 11 from the upstream side, and 11ba and 11bb denote a pair of upper and lower work rolls having work roll chocks 11ca and 11cb, respectively. I have. When the pair of upper and lower work rolls 11ba and 11bb have upper and lower backup rolls 11da and 11db, respectively, the work rolls are configured as a quadruple cold rolling mill, and when not provided as shown in FIGS. 2 using upper and lower blocks 11ja and 11jb
It is 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 at the top of the inside,
A load cell 11g is held between the upper backup roll chock 11ea when used as a quadruple cold rolling mill and between the upper block 11ja when used as a double cold rolling mill. It is provided so that. In the lower part of the housing 11a, a lower backup roll chock 11eb is used when used as a quadruple cold rolling mill, and a lower block 11jb is used when used as a double cold rolling mill. In between, a trolley 11h provided with wheels 11ha and a pressure reducing device 11i provided with a normal hydraulic pressure source are provided.

As shown in FIG. 2, in the state of rolling as a quadruple cold rolling mill, the lower rolling device 11i is actuated to push up the piston rod 11ib of the cylinder 11ia to thereby move it through the bogie 11h. The lower backup roll chock 11eb is pushed upward, and the work rolls 11ba and 11bb and the backup rolls 11da and 11db are all in contact with each other, and can be rolled. On the other hand, as shown in FIG. 3, by lowering the piston rod 11ib of the cylinder 11ia downward until the wheel 11ha of the carriage 11h reaches the pedestal 11hb, a pair of upper and lower work rolls 11ba,
11bb can be opened so that a gap is provided between the lower work roll 11bb and the lower backup roll 11db.

In order to make the first cold rolling mill 11 from the upstream side in such a roll configuration state completely arbitrarily changeable, a four-fold cold rolling mill as shown in FIGS. 2 and 3 is typically used. When changing the roll arrangement 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 change is performed as described below. Although not specifically shown and described, in the roll arrangement state shown in FIG. 3, first, a pair of upper and lower roll changers (not shown) waiting on the outside of the housing 11a of the cold rolling mill 11 The work rolls 11ba and 11bb are pulled out of the housing 11a at the same time as the respective work roll chocks 11ca and 11cb, and then the stainless steel strip 1 that is stopped passing through the housing 11a is attached to a roll changing cart. The stainless steel strip 1 is moved so as to be inserted from one side (edge) into a U-shaped opening of a U-shaped jig (not shown). The upper and lower surfaces of the U-shaped jig are respectively provided with blocks of predetermined dimensions, and the work rolls 11ba, 11
The space occupied by the bb and their work roll chocks 11ca and 11cb in the housing 11a is filled with this block, and the upper and lower backup rolls 11da and 11db and their backup roll chocks 11ea and 11eb are integrated on a trolley 11h. In a state like
The carriage 11h is pulled out of the housing 11a.

In this way, all the rolls 11ba, 11bb and 11da, 11db are extracted from the inside of the housing 11h of the first cold rolling mill 11 from the upstream side. Stainless steel strip 1 moving by
Is returned to the upstream side to empty the housing 11h, and then, on another carriage 11h, the configuration of the open double cold rolling mill as shown in FIG. 5 (in this case, the backup roll chock 11ea A block serving as a spacer is disposed between the upper and lower parts of the large work rolls 11ba and 11bb, which have been prepared and assembled and are expected to be integrated. The roll is then pushed into the housing 11a to complete the roll change to the state of the double cold rolling mill. Conversely, after the roll change is performed as described above, the state where the first cold rolling mill 11 from the upstream side is configured as a double cold rolling mill is changed to a configuration state of a quadruple cold rolling mill. In the case where the roles are changed and returned, the procedure of the role change described above may be reversed.

In addition, from the configuration of this quadruple cold rolling mill,
In addition to changing the rolls to the configuration state 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 remain assembled. Extract only the unusual work rolls 11ba and 11bb that are left with abrasion, surface fatigue, roll marks, etc., and then install new and normal work rolls 11ba and 11bb that have been prepared and prepared in advance. In the case of recombining to make it possible to carry out cold rolling, the pair of large diameter work rolls 11ba and 11bb which have abnormalities such as wear and surface fatigue of double cold rolling mill and roll marks etc. are prepared in advance. A pair of new or normal large-diameter work rolls 11ba, 11
In some cases, it is inevitable that the rolls are changed to bb so as to be ready for cold rolling.In each of these cases, the procedure up to and after the roll change procedure described above can be reversed. I just need to. Furthermore, from such upstream 1
Even when the rolls of a plurality of multi-high rolling mills 16 arranged after the first cold rolling mill 11 are changed, only the work rolls 16a and 16b are re-rolled to make a rollable configuration. In some cases, it is natural that the intermediate rolls and the backup rolls are rolled at once to form a rollable configuration state. In each of these cases, existing roll changing means using a roll changing carriage or the like is used. It is better to deal with it.

FIG. 6 is a simplified illustration of an embodiment of a vibration preventing device having a centering mechanism installed in a cold rolling plant installed after a series of continuous annealing and descaling devices for a stainless steel strip according to the present invention. FIG.
As shown in FIG. 1 and described above, a cold rolling mill 11 which can be arbitrarily and easily changed to a first or second double or quadruple from the upstream side and a plurality of multi-stage cold rolling mills arranged further thereafter 1 of 16 groups
The interval from the base is immediately after the cold rolling mill 11, the shears 12,
Due to the arrangement of the deflector roll 13 and the at least one front tension reel device 14, it is considerably wide open, during which the continuously passing stainless steel strip 1 tends to vibrate and meander. In order to prevent such vibration and meandering, on the downstream side of the front tension reel device 14,
For example, an anti-vibration device 15 having a centering mechanism constituted by three rolls as shown in FIG. 6 is provided.

The vibration preventing device 15 having the centering mechanism illustrated in FIG. 6 is provided with three rolls 15a, 15b and 15c which are not driven to rotate. That is,
Two parallel rolls 15b and 15c, which are rolls for passing the stainless steel strip 1 which is continuously passed and which are receiving rolls of the anti-vibration device 15 having the centering mechanism, are attached to the base fixed frame 15d, respectively. Mounted bearings 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, respectively. The substantially U-shaped drive frame 15f pivotally connected to the post frames 15ea and 15eb by the connection support shaft 15fa is mounted on the brackets 15eaa and 15ebb provided on the upper portions of the post frames 15ea and 15eb, respectively.
Ends 15gab, 15gbb at the end of rods 15gaa, 15gba of cylinders 15ga, 15gb supported by 15ha, 15hb are provided on brackets 15fca, 15fca, provided on the upper surface of the drive frame 15f.
It is supported by being connected to 15fcb with pins 15ia and 15ib. When both cylinders 15ga and 15gb are pressurized in conjunction with each other, the drive frame 15f thus configured and supported is rotated about the connection support shaft 15fa. The driven frame 15f has a roll 15a so that the other end can be moved up and down with one end as a fulcrum.
Is supported. That is, the roll 15a is disposed at an intermediate position between the receiving rolls 15b and 15c,
A bearing 15ab supported on a lower surface on one side of the drive frame 15f by a bracket and a pin (not shown in FIG. 6) so as to be vertically displaceable, and a U-shaped portion 15fb on the other side (front side in FIG. 6). Frame 15f in the opening of
And is supported by a bearing 15aa which is supported in a suspended state by a rod of a cylinder 15j attached to the upper surface and is slidable in the vertical direction.

The three rolls 15a, 1
In the vibration preventing device 15 having a centering mechanism composed of 5b and 15c, the stainless steel strip 1 continuously passed on the two receiving rolls 15b and 15c is operated by operating the two cylinders 15ga and 15gb. As described above, the roller is pressed by the roll 15a rotatably supported by the drive frame 15f and bent by a predetermined amount. That is, the stainless steel strip 1 thus passed through is bent and restrained to prevent vibration, and a pair of light emitters 15ka and a detector 15ka disposed downstream of the vibration preventing device 15 having the centering mechanism. vessel
The meandering of the stainless steel strip 1 passed through the 15 kb is continuously detected, and the driving frame 15f is controlled via an adjustment control mechanism (not shown) provided appropriately based on the detected value.
The operation of the cylinder 15j attached to the upper surface of the roller 15a causes the roll 15a supported by the cylinder 15j via a bearing 15aa to be vertically displaced, so that the stainless steel strip 1 of the roll 15a in the cantilevered state is displaced. The meandering can be corrected and centered by appropriately adjusting the amount of pressure applied to the surface.

FIG. 7 shows an embodiment of a tension bridle apparatus provided upstream of a cold rolling facility provided after a series of continuous annealing and descaling apparatus for a stainless steel strip according to the present invention. FIG. 2 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 tension is applied to the stainless steel strip 1 continuously passed through the equipment, but also a stable and high-speed cooling. In order to manufacture the stainless steel strip 1 having good quality such as sheet thickness and shape by enabling cold rolling, it is preferable that a centering mechanism be attached to the tension bridle roll device 10 to perform centering. 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 none of which is driven to rotate.

One of the pair of rolls 10a and 10b is provided with 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. As described above, the swing frame 10d supporting the other roll 10b has its upper end supported by the fixed frame 10c in a suspended state with a pin 10e, and is supported by a bracket 10ca provided on the fixed frame 10c. The tip of the rod 10fa of the cylinder 10f supported by 10g is
Since it is supported by the pin 10h on the bracket 10da provided at 0d, it can swing freely around the pin 10e in the direction of the arrow. Therefore, when the cylinder 10f is biased by pressure, the swing frame 10d, that is, the swing frame 1 is pivoted around the pin 10e supported by the fixed frame 10c.
The roll 10b supported by 0d can be swung in the direction of the arrow with respect to the roll 10a that is immobile.

Accordingly, in the centering mechanism of the tension bridle roll device 10 including the pair of rolls 10a and 10b around which the continuously running stainless steel strip 1 is wound, the downstream of the tension bridle roll device 10 is provided. The operation of the cylinder 10f is controlled via an adjustment control mechanism (not shown) provided as appropriate 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 is oscillated about the pin 10e to correct and center the meandering of the stainless steel strip 1 running continuously through the plate.

The stainless steel strip 1 that has been subjected to the annealing treatment and the descaling treatment is cold-rolled at once by the series of continuous annealing descaling rolling equipment described above to finish it into a desired stainless steel strip 1. In order to manufacture, as described above, the first cold rolling mill 11 from the upstream side is desirably set in a roll configuration of a quadruple cold rolling mill, and a plurality of multi-stage cold rolling mills that are subsequently provided are further provided. The diameter of the cold rolling mill 16 is 22
If the cold rolling is performed using a cold rolling equipment group having at least a 6-fold cold rolling mill having a pair of upper and lower work rolls 16a and 16b of 0 to 330 mm, the hard stainless steel strip 1 is rolled as much as possible. It is possible to roll more strongly and easily without doing so.

Further, in the case of manufacturing the stainless steel strip 1 having various surface finishes specified by JIS or the like,
For example, a cold-rolled stainless steel strip with a No. 2D surface finish that is lightly cold-rolled with a matte roll or a No. 2B surface finish that is cold-rolled to the extent that a suitable gloss is obtained at the request of the customer. In some cases, even in the case where it is necessary to cold-roll lightly in order to make the production process efficient and efficient by adjusting the thickness and shape, and above all, at a high quality and at low cost, the equipment of the present invention is used. If used, the stainless steel strip 1 rolled by the front tension reel device 14 is lightly cold-rolled, while properly using the cold rolling mill 11 in this facility as a quadruple or double cold rolling mill as described above. It can be manufactured by winding.

Further, between the annealing and descaling device and the tension bridle roll device 10 disposed on the upstream side of the cold rolling equipment, the tension bridle roll device is provided.
When a looper device 8 for storing a steel strip length necessary for continuously passing the stainless steel strip 1 is provided in a cold rolling facility including 10, the tail end thereof is sheared by a shearing machine 12. Until the preceding stainless steel strip 1 is wound on the front tension reel device 14, or the preceding stainless steel coil wound on the front tension reel 14 is removed from the reel, and the winding start posture of the next succeeding stainless steel strip is changed. Until it is possible, there is no need to interrupt the continuous passing of the subsequent stainless steel strip 1 (stop passing).

[0033]

According to the equipment of the present invention having the above-described structure, as means for generating tension applied to the entire length of the stainless steel strip 1 which is continuously passed through the cold rolling equipment and cold-rolled,
A tension bridle roll device 10 is provided upstream of the cold rolling equipment, and a double cold rolling mill or pinch roll device 17 is provided downstream thereof. One of these devices is provided between these devices 10 and 17 from the upstream side. And a plurality of groups of multi-stage cold rolling mills 16 are arranged in succession.
At least one front tension reel device 14 provided with a shearing machine 12 is provided immediately after the base cold rolling mill 11 and immediately after the downstream double cold rolling mill or pinch roll device 17. At least one rear tension reel device 20 having a shearing machine 18 attached thereto is disposed. 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 configuration, the plurality of multi-stage cold rolling mills 16 are a group of multi-stage cold rolling mills of various types and combinations, including a quadruple cold rolling mill having the least number of rolls and a simple structure. The configuration and the number of bases of the group of 16 multi-stage cold rolling mills may be any desired thickness, width, shape and shape.
The high-quality stainless steel strip 1 including surface quality and the like may be arbitrarily set and arranged so that cold rolling can be performed. On the downstream side of the group of multi-stage cold rolling mills 16, a pinch roll device 17 may be provided for generating tension, but it is necessary to produce a thinner stainless steel strip 1 with a small thickness. For example, in the case of cold rolling, or in the case of performing light rolling for shape correction to produce a stainless steel strip 1 having a better shape, a double cold rolling mill is used instead of the pinch roll device 17. Alternatively, light rolling may be performed while providing a predetermined tension within a required range.

In the equipment of the present invention having such a configuration, the stainless steel strip 1 after at least the descaling treatment can be cold rolled at once, and can be finished and manufactured efficiently in various cases. Then, as described below, it is made to function and act. That is, when the stainless steel strip 1 that has been subjected to the continuous annealing process and the descaling process by the facility of the present invention is cold-rolled, the stainless steel strip 1 is disposed on the upstream side and the downstream side of the facility of the present invention as tension generating means. The tension bridle roll device 10 and the double cold rolling mill or pinch roll device 17 apply a tension within a required range to the stainless steel strip 1 which is continuously passed through the equipment of the present invention and which is cold rolled over its entire length. Is done. Accordingly, each of the cold rolling mills 1 disposed between the two devices 10 and 17 is provided.
Cold rolling can be performed stably while applying a predetermined tension to the stainless steel strip 1 that is continuously passed between each of the devices 1, 16 and the device 15.

In the equipment of the present invention, a hot-rolled stainless steel, which is a surface-finished product other than the No. 1 finish which has not been subjected to annealing and descaling and which has not been finished as an unrolled finish or an agreement with an orderer. When manufacturing the steel strip 1, 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 shearing machine 12 provided immediately after the first cold rolling mill 11 from the upstream side shears a predetermined position of the stainless steel strip 1 which is continuously threaded, and sets a predetermined position following the shearing head. The up to the shearing tail is wound up by at least one front tension reel device 14 provided. In this case, up to the shear tail portion at the time of the first shearing, the rolled stainless steel strip 1 is cold-rolled by the cold rolling equipment as it is, and the rolled stainless steel strip 1 is wound around at least one rear tension reel device 20 provided. You just have to take it.

The shearing machine 12 provided immediately after the first cold rolling mill 11 from the upstream side shears the steel strip 1 at the predetermined position of the continuously passing stainless steel strip 1 at the second shearing. Front tension reel device continues after the shearing head
It is divided into a case where it is wound around 14 and a case where it is wound on a rear tension reel device 20 as a cold rolled and rolled stainless steel strip 1. In the former case, the winding operation mode changes between when only one front tension reel device 14 is provided and when two or more front tension reel devices 14 are provided. That is, when only one front tension reel device 14 is provided,
The tail end of the preceding stainless steel strip 1 sheared at 12 is wound on this front tension reel 14 and the coil of the wound preceding stainless steel strip 1 is removed from the reel and the next stainless steel strip 1 is wound. It is necessary to wait for the next continuous passing of the subsequent stainless steel strip 1 until the winding start posture is formed. Therefore, the subsequent stainless steel strip 1 is passed at a very low speed, or is subjected to annealing and removal. The next succeeding stainless steel strip 1 is stored in the looper device 8 disposed between the scale device and the tension bridle roll device 10 disposed on the upstream side of the cold rolling equipment, and the threading is temporarily stopped. You just have to do it. On the other hand, in the latter case, the shearing head of the succeeding stainless steel strip is threaded between each multi-stage cold rolling mill 16 and the apparatus 15 in the cold rolling equipment in the empty state in the unseen state and the rear surface tension is increased. After being wound around the reel 20 and given a predetermined tension by the tension generating means 10 and 17, the cold rolling is restarted and the rolled stainless steel strip 1 is wound up.

When the stainless steel strip 1 similarly subjected to the annealing treatment and the descaling treatment is manufactured while being finished into a lightly cold-rolled stainless steel strip 1, 1
Only the base cold rolling mill 11 is arbitrarily changed to a double cold rolling mill or a quadruple cold rolling mill as necessary, and is used while being selectively used, lightly cold-rolled, and finished from the upstream side. A front tension reel in which a predetermined position is sheared by a shearing machine 12 provided immediately after a base cold rolling mill 11, and at least one unit is arranged from a shearing head to a shear tail at a next predetermined position. It is wound up by the device 14. Also in this case, the shearing head to the shearing tail 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 on the front or rear tension reel device 14 or 20, respectively.

Further, in order to finish the stainless steel strip 1 which has been basically subjected to the annealing treatment and the descaling treatment to a stainless steel strip 1 having a slightly thinner plate thickness, the most powerful cold rolling is performed. The first cold rolling mill 11 from the upstream side is necessarily used as a quadruple cold rolling mill, and furthermore, a plurality of multi-stage cold rolling mills 16 arranged in succession, furthermore, Using a double cold rolling mill 17 instead of a pinch roll device normally provided on the downstream side, a stainless steel strip 1 that has been cold-rolled strongly and rolled to a desired quality such as sheet thickness and shape at once. Then, the paper is sheared by a shearing machine 18 provided immediately after the double cold rolling mill 17 and wound around at least one rear tension reel device 20 provided.

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 mills 16 arranged in succession is provided. If a roll mark or the like is generated on the surface of the rolled stainless steel strip 1 due to the cold rolling in a series of arranged facilities, the sheet is continuously passed through the series of facilities and cold-rolled. It is necessary to temporarily stop the rolling of the stainless steel strip 1 that is being rolled, check the defective work rolls, etc., and change the rolls. Regardless of the roll change of the cold rolling mill 11 and the multiple multi-stage cold rolling mills 16 group, as described above, not only work rolls but also intermediate rolls according to a normal roll change schedule. In the case where all the rolls up to the roll and the backup roll are changed at a stroke to make it a rollable configuration state, similarly, according to the roll change schedule, only the work rolls with abrasion and surface fatigue are rearranged so that they can be rolled In some cases, as a remedy, there is a case where, as an abnormal treatment, the defective work roll or the like which has been investigated and confirmed as a roll mark source is mainly recombined into a rollable configuration state. There is no problem with the roll reassignment performed in accordance with such a roll reassignment schedule, but if it is very troublesome, it is a roll reassignment such as a work roll performed as this abnormal treatment or other equipment failure or accident, A longer recovery time is required to bring these components into a rollable configuration.

However, today, it has become possible to efficiently perform the above-described reassignment of the rolls and the reassignment of only the work rolls in an extremely short time. The stainless steel strip 1 passed through the stainless steel strip 1 must be temporarily stopped in the rolling mill during the roll change during the change time. The length of the looper device 8 can be stored and absorbed in the looper device 8 described below and described later, and the looper device 8 has a capacity that can be normally absorbed unless the recovery time is long and there is a problem.
If the arrangement is made to cope with the problem, it is possible to smoothly and continuously pass the sheets in a series of facilities without any hindrance.

In the case where the recovery time is prolonged and is problematic, that is, in the worst case, when the cause is on the group of a plurality of multi-stage cold rolling mills 16, the roll set of this multi-stage cold rolling mill 16 is Hot or cold-rolled stainless steel strip 1 that has been subjected to the annealing and descaling treatments as described above, and a cold-rolled stainless steel strip that has been subjected to the same treatment, while performing recovery work including replacement. 1 or a pair of upper and lower work rolls of the cold rolling mill 11 which can be arbitrarily changed to an upstream double or quadruple or lightly cold rolled, and the shear provided immediately after this. Each of the predetermined positions can be wound on the front tension reel device 14 while being sheared by the machine 12. 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 plurality of multi-stage cold rolling mills 16 group, the roll set of the cold rolling mill 11 It is not possible to perform cold rolling and, of course, it is not possible to perform cold rolling.However, a pair of upper and lower work rolls of the cold rolling mill 11 are opened and unrolled at least after 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. In other words, in the continuous annealing descaling rolling equipment in this series of equipment, even if the stainless steel strip 1 is forced to stop passing through the sheet, it is not necessary to stop passing through the entire equipment, Therefore, it is possible to reduce or avoid the degree of various adverse effects as much as possible.

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 equipment of the present invention, the cold rolling mill 11 which can be arbitrarily changed to a double or quadruple first from the upstream side and a plurality of multi-stage cold rolling mills 16 arranged further thereafter are provided. As described above, the distance from the first machine is too large because the shearing machine 12 is attached immediately after the first cold mill 11 from the upstream side and at least one front tension reel device 14 is provided. During this time, the stainless steel strip 1 continuously passing is vibrating and meandering, so that high-speed rolling cannot be performed and unstable cold rolling is performed, so that it is impossible to obtain the stainless steel strip 1 rolled with good quality. It is provided to prevent such vibration and meandering.

In the equipment of the present invention, a tension bridle roll device 10 provided with a centering mechanism for the stainless steel strip 1 which is continuously passed is provided as a tension bridle roll device 10 disposed on the upstream side in the cold rolling equipment.
Is preferably provided. This is because, by operating such a centering mechanism in the facility of the present invention, the meandering of the stainless steel strip 1 continuously passed through the facility at the uppermost stream of the facility of the present invention is not only performed, but also the meandering is performed. It is possible to supply and pass 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 sheet thickness and shape can be manufactured. .

Further, in the facility of the present invention, the stainless steel strip 1 necessary for enabling the stainless steel strip 1 to be substantially continuously passed through the cold rolling equipment including the tension bridle roll device 10 is used. A looper device 8 capable of preliminarily storing and absorbing the length is provided between the annealing and descaling device 7 and a tension bridle roll device 10 disposed at the most upstream side of the cold rolling equipment. Preferably.
This is because the front end of the stainless steel strip 1 sheared by the shearing machine 12 is sheared by the shearing machine 12 at the tail end thereof.
Unless the tension reel device 14 has only one tension reel unit 14 until it is completely wound on the front tension reel 14, the coil of the preceding stainless steel strip 1 wound on the front tension reel 14 is further removed from the reel and the next succeeding stainless steel strip 1 is removed. Until the winding start posture of the steel strip 1 is formed, it is necessary to prevent the occurrence of the phenomenon that the continuous passing of the next succeeding stainless steel strip 1 must be interrupted, that is, the passing of the steel strip 1 must be stopped and kept waiting. Because it does not become. That is, an annealing furnace which is disposed on the upstream side of the facility of the present invention, and which must surely continuously pass the stainless steel strip 1 without stopping the passing of the stainless steel strip 1 at a passing speed within a predetermined range. The stainless steel strip 1 continuously supplied to the cold rolling equipment from the annealing device 6 having 6a and the descaling device 7 disposed subsequently to the annealing device 6 is stopped by passing the stainless steel strip 1 as described below. Various cases must be kept waiting, but these cases must be prevented.

More specifically, after the leading end of the preceding stainless steel strip 1 is completely wound on the front tension reel 14, the succeeding stainless steel strip 1 is passed through the cold rolling facility and via the shearing machine 18. Threading is gradually performed to at least one tension reel device 20 on the rear surface, which is wound around the reel, and a predetermined tension is applied to the tension reel device 20. There are also cases where we have to do something. When the stainless steel strip 1 is cold-rolled by the cold rolling equipment and the stainless steel strip 1 is sheared by the shearing machine 18 and the preceding and following stainless steel strips are wound by the rear tension reel device 20 for each steel strip 1 at least, Until the tail end of the preceding stainless steel strip 1 is completely wound on the rear tension reel 20, only one rear tension reel device is used.
If no 20 is provided, the coil of the preceding stainless steel strip 1 wound on the rear tension reel 20 is further removed from the reel, and the winding start posture of the next succeeding stainless steel strip 1 is formed. Subsequent stainless steel strip 1
If the sheet passing is stopped and the sheet passing is stopped, or if the sheet passing is stopped in this way, a pair of upper and lower work rolls of each cold rolling mill in the cold rolling equipment is called a stop mark on the surface of the stainless steel strip 1. Traces (indentation marks) are generated and the surface of the steel strip surface such as gloss also changes. In order to avoid or prevent the sheet passing, there is a case where the sheet is passed in an extremely fine rolling state without stopping, and finally wound on the rear tension reel 20.

Further, as described above, fatal roll marks may be generated on the surface of the stainless steel strip 1 due to such cold rolling. Since the countermeasure technology for preventing the occurrence of such roll marks is not a problem to be solved by the present invention, a detailed description thereof will be omitted, but immediately after the start of the cold rolling and if necessary, Rolling may be stopped at several points along the way or the surface of the stainless steel strip 1 may be inspected to determine whether or not a roll mark has been generated by setting it to a low-speed rolling state. In addition, once a roll mark is generated, the work roll, which is the source of the roll mark, is surely formed with dents and the like, is checked and confirmed, and the corresponding work roll and, if necessary, its paired roll are checked. It is necessary to change the roll and replace it with a new or well-maintained work roll that has been prepared separately and has no flaws. In some cases, cold rolling must be interrupted or stopped.

As described in detail above, in any case, in the equipment of the present invention, the stainless steel strip 1 which is supposed to be continuously supplied and cold rolled successively and wound up on the rear tension reel 20 is produced. For various reasons, rolling is unavoidably stopped, or rolling in an extremely slow rolling state or a low speed rolling state is inevitable. 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 a plurality of multi-stage cold rolling mills 16 are arranged. Although the passing state of the stainless steel strip 1 is different from the case where the rolling is stopped due to the change of the roll, there is a case where the rolling must be temporarily stopped in any case. In such cases, the necessary length of the steel strip 1 is stored and absorbed in advance by the looper device 8, or the length of the steel strip 1 once absorbed is discharged. In addition, it is possible to continuously pass through the stainless steel strip 1 as much as possible without stopping the passing of the stainless steel strip 1 and to perform cold rolling, thereby preventing the above-mentioned various adverse effects.

In the equipment of the present invention, 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 stainless steel strips generally have higher deformation resistance and harder work hardening than ordinary steel strips, so it is best to use a work roll with the smallest possible diameter while applying relatively large tension during cold rolling. In the present invention, the diameter of a pair of upper and lower work rolls in a tandem type cold rolling mill for cold rolling a steel strip such as ordinary steel is in the range of 400 to 600 mm because it is advantageous and advantageous. The used multi-stage cold rolling mill 16 has a very small diameter, and the hard stainless steel strip 1 is easily rolled by the multi-stage cold rolling mill 16 having such small-diameter work rolls 16a and 16b. Because you can do it. Therefore, it is preferable to perform cold rolling using the work rolls 16a and 16b having a diameter as small as possible. However, as described above, as a countermeasure technology for preventing the occurrence of a concave mark or the like which becomes a roll mark generation source on the surface of the work roll, as described above. For example, if a small-diameter brush roll is driven to rotate and brought into contact with the surface of the work roll, and foreign matter that causes the occurrence of such dents or the like is adhered or pressure-bonded to the surface of the work roll. Since an appropriate space is required to allow the small-diameter blank roll to be rotatably driven, the work roll cannot be reduced in diameter, and the minimum diameter of the roll must be reduced to about 220 mm. There is no.

[0050]

As described in detail above, the cold rolling equipment provided after the series of continuous annealing and descaling equipment for stainless steel strip according to the present invention comprises a tension bridle roll device on the upstream side and a downstream device on the downstream side. A double cold rolling mill or a pinch roll device is disposed between the tension bridle roll device on the upstream side and the double cold rolling mill or pinch roll device on the downstream side. A plurality of cold rolling mills and a plurality of multi-stage cold rolling mills are arranged, and 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 for winding a stainless steel strip cold-rolled by a cold rolling mill via a shearing machine, further immediately after the double cold rolling mill or pinch roll device on the downstream side, and Cold rolled stainless steel Since at least one rear tension reel device for winding the stainless steel strip through a shearing machine is provided, each of the hot-rolled material and the cold-rolled material after the annealing process and the descaling process is completed. The stainless steel strip can be treated without stopping the operation of the annealing and descaling equipment.
No.1 specified in 306 “Hot rolled stainless steel strip”
Manufactures various surface finish stainless steel strips such as finishes and surface finishes other than No. 1 finishes in agreement with the orderer, No. 2D finishes and No. 2B finishes specified in JIS G4307 "Cold rolled stainless steel strips". This is a multifunctional equipment that can reduce or avoid the extent of various adverse effects caused by the occurrence of roll marks on the stainless steel strip surface caused by cold rolling in the cold rolling equipment. The equipment is configured so that it is capable of operating efficiently and stably, and can provide various benefits based on the desired process saving. Has been of great industrial value.

[Brief description of the drawings]

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

FIG. 2 is an embodiment of a first cold rolling mill from an upstream side in a cold rolling facility that is provided after a series of continuous annealing and descaling apparatuses for a stainless steel strip according to the present invention. It is a front explanatory view which shows the state during rolling as a quadruple cold rolling mill in a simplified manner.

FIG. 3 is an explanatory front view schematically showing an unrolled state in which the pair of upper and lower work rolls is opened by the quadruple cold rolling mill shown in FIG. 2;

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

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

FIG. 6 is a simplified view of an embodiment of a vibration preventing device having a centering mechanism provided in a cold rolling facility provided subsequently to a series of continuous annealing and descaling devices for a 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 disposed subsequent to a series of continuous annealing and descaling devices for a stainless steel strip according to the present invention. FIG. 4 is a perspective explanatory view showing a simplified centering mechanism.

[Explanation of symbols]

 Reference Signs List 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 and 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 Swing frame 10da Bracket 10e Pin 10f Cylinder 10fa Rod 10g Pin 10h Pin 11 First cold rolling mill 11a from upstream 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 Bogie 11ha Wheel 11hb Pedestal 11i Reduction Placement 11ia Cylinder 11ib Piston rod 11ja Upper block 11jb Lower block 12 Shearer 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 U-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 roll 17 Downstream double cold rolling mill or pinch roll device 18 Shearing machine 19 Deflector roll 20 Rear tension reel device

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-71702 (JP, A) JP-A-59-35805 (JP, A) JP-A-51-23458 (JP, A) 16201 (JP, U) (58) Field surveyed (Int. Cl. ⁶ , DB name) B21B 3/02 B21B 1/22 B21B 1/28

Claims (7)

(57) [Claims] 1. A cold rolling facility for a continuous passing stainless steel strip, which is disposed in a series of facilities following an annealing and descaling apparatus, wherein a tension is provided upstream of the cold rolling facility. A bridle roll device and a double cold rolling mill or a pinch roll device are disposed on the downstream side, and the tension bridle roll device on the upstream side and the double tension rolling device on the downstream side are disposed.
Between the heavy cold rolling mill or the pinch roll device, a first cold rolling mill and a plurality of multi-stage cold rolling mills are arranged from the upstream side, and a first cold rolling mill is arranged from the upstream side. At least one front tension reel device for winding a stainless steel strip that has not been rolled immediately after the cold rolling mill or that has been 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 pinch roll device, at least one rear tension reel device for winding a stainless steel strip cold-rolled by the multi-stage cold rolling mill via a shearing machine is provided. A cold rolling plant which is provided subsequent to a series of continuous annealing and descaling devices for stainless steel strip, which are provided. 2. A state in which a first cold rolling mill from an upstream side opens a pair of upper and lower work rolls, and a state in which cold rolling can be performed as a double cold rolling mill or a quadruple cold rolling mill. A series of continuous annealing and descaling apparatus for a stainless steel strip according to claim 1, wherein the cold rolling mill has a configuration in which a roll arrangement in the cold rolling mill can be changed and a roll can be changed. Cold rolling equipment to be installed in the following. 3. The at least one front tension reel device, which is provided with a shearing machine immediately after the first cold rolling mill from the upstream side, and further the first tension reel device which is further provided thereafter. A series of continuous annealing for a stainless steel strip according to claim 1 or 2, further comprising a vibration preventing device having a centering mechanism for the stainless steel strip continuously passed between the multi-stage cold rolling mills. And a cold rolling facility that is provided subsequent to the descaling device. 4. A cooling device which is disposed after a series of continuous annealing and descaling devices for a stainless steel strip according to claim 3, wherein the vibration preventing device having a centering mechanism is a device constituted by three rolls. Rolling equipment. 5. A tension bridle roll device provided on an upstream side, wherein the tension bridle roll device is provided with a centering mechanism of a stainless steel strip continuously passed through a cold rolling facility including the tension bridle roll device. 5. A cold rolling plant subsequent to a series of continuous annealing and descaling equipment for stainless steel strip according to any one of claims 1 to 4. 6. Between an annealing and descaling device and a tension bridle roll device disposed upstream of the cold rolling device, a stainless steel strip is continuously provided in a cold rolling device including the tension bridle roll device. 6. A series of continuous annealing and descaling equipment for stainless steel strip according to any one of claims 1 to 5, wherein a looper device is provided for storing the length of steel strip required for threading. Cold rolling equipment to be installed. 7. The multi-stage cold rolling mill according to claim 1, wherein the plurality of multi-stage cold rolling mills are six-fold cold rolling mills, and a pair of upper and lower work rolls of each six-fold cold rolling mill has a diameter of 220 to 300 mm. 5. A cold rolling facility subsequent to a series of continuous annealing and descaling equipment for stainless steel strip according to any one of the above.