JPS6264407A - Production of patterned thin metallic sheet - Google Patents

Abstract

PURPOSE:To permit the stable rolling and transfer of a sharp pattern to an extremely thin metallic sheet in a titled method for winding a metallic sheet to >=2 pieces of driving rolls having the circumferential speeds different from each other and rolling the same by forming the pattern on the surface of the outlet side driving roll. CONSTITUTION:A rolling mill 11 of a rolling installation 10 has contact rolls 15, 16 as a driving roll. Metallic foil 18 to be un-wound is successively wound on the respective circumferential surfaces of the roll 15, a floating roll 17 and the roll 16 and is then coiled via a skin pass rolling mill 12. The rolling mill 11 drives the rolls 15, 16 in the same direction at the circumferential speed of the former lower than the circumferential speed of the latter so as to exert the inlet and outlet side tension to the foil 18 and to advance the foil 18 in an arrow direction, thereby rolling the foil 18 in the gap between each of the rolls 15, 16 and the roll 17. The rugged pattern or a pattern 16A with the difference in luster is applied on the surface of the roll 16 in this stage. The pattern 16A is thereby rolled and transferred onto the surface of the foil 18.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a method for manufacturing a patterned metal sheet.

[Prior art] A cold-rolled steel plate is rolled by incorporating a roll that creates an uneven pattern on the final stand of a secondary, two- or four-high cold rolling mill or the stand of a temper rolling mill. A method has been proposed in which a pattern on the surface of a roll is transferred to the surface of a roll.In addition, as a method for transferring a pattern based on differences in gloss, a roll that gradually creates a pattern based on a difference in surface roughness is incorporated into each of the stands. , a method has been proposed in which the pattern is transferred to the surface of a cold-rolled steel sheet rolled by each of the above-mentioned rolling mills.

[Problems to be Solved by the Invention] However, the method of rolling and transferring a pattern onto a metal plate as described above is a method for when the metal plate is thick;
There is no method to continuously transfer uneven patterns or patterns due to differences in gloss to a very thin metal sheet such as metal foil by rolling.

Note that the yield stress of a metal thin plate such as metal foil obtained by cold rolling is high, and in order to transfer a clear pattern to the metal thin plate by rolling, it is necessary to roll at a high rolling reduction rate.

It is conceivable to roll and transfer the uneven pattern and the pattern due to the difference in gloss onto the thin metal sheet as described above using a rolling mill with small-diameter work rolls such as a four-high rolling mill or a Sendzimer rolling mill. Due to contact friction, the uneven pattern and gloss difference imparted to the work roll are significantly worn away, making it difficult to obtain a clear pattern.

An object of the present invention is to make it possible to stably transfer a clear pattern onto the surface of a thin metal plate by rolling.

[Means for Solving the Problems] The present invention provides a method for manufacturing a patterned thin metal plate, in which two or more drive rolls having different circumferential speeds are arranged, and a metal plate is wound and rolled around each drive roll. A predetermined pattern is provided on the surface of the exit drive roll, and the pattern is transferred to the surface of the metal plate.

° [Function] According to the present invention, even when the yield stress of the thin metal plate is high,
By rolling at different circumferential speeds, the thin metal sheet is rolled at a high rolling reduction rate (for example, 1
It is possible to roll with a rolling reduction ratio of 0% or more. Furthermore, the pattern imparted to the surface of the drive roll does not wear out due to the presence of the backup roll, etc. Therefore, it becomes possible to stably roll and transfer a clear pattern onto the surface of the thin metal plate.

[Example] FIG. 1 is a schematic diagram showing an example of rolling equipment 10 used for implementing the present invention. The rolling equipment 10 has a rolling capacity of 4m! 11
, a skin bath rolling mill 12, an unwinder 13, and a winder @14.

The rolling mill 11 is related to CBS rolling as disclosed in U.S. Pat. No. 3,238,758, and has two contact rolls 15.16 as drive rolls arranged with a gap in between, and near both contact rolls 15.16. A non-driven floating roll 17 having a diameter slightly larger than the roll gap between both contact rolls 15.16 and sufficiently smaller than the diameter of both contact rolls 15.16 is arranged. This results in
A metal foil 18 unwound from an unwinding machine 13 disposed on the entry side of the rolling mill 11 is wound around the circumferential surface of one of the contact rolls 15, firstly, and then wound around the circumferential surface of the floating roll 17.
Furthermore, after being wound around the circumferential surface of the other contact roll 16, it is possible to pass through a skin bath rolling mill 12 and wind it up on a winding machine 14 disposed on the exit side. Further, the rolling mill 11 applies an inlet tension TI and an outlet tension T2 to the metal foil 18, and also moves one contact roll 15, 16 in the same direction so that the metal foil 18 advances toward the outlet side. , and both contact rolls 15., such that the circumferential speed Vl of the contact roll 15 on the inlet side is slower than at least the circumferential speed v2 of the contact roll 16 on the outlet side.
16 are driven, respectively, so that the metal foil 18 can be rolled in the gaps formed between each of the two contact rolls 15 and 16 and the floating roll 17. 19 is a winding roll.

In this rolling installation @ 10, the surface of the drive contact roll 16 on the exit side is provided with an uneven pattern or a pattern due to difference in gloss as shown in 16A, and the pattern 16A can be transferred onto the surface of the metal foil 18 by rolling. It is said that

Here, the rolling reduction rate r of the rolling 4211 by the above CBS rolling is
(%) is the circumferential speed v1 of the entry side contact roll 15,
The circumferential speed v2 of the exit contact roll 16 is given by r=[1-(Vl/V2)]X100.''(1).

Figure 2 shows the transfer rate (=pattern roughness of metal foil/metal foil pattern roughness/
FIG. 3 is a diagram showing the relationship between the pattern roughness (pattern roughness of the exit drive roll) and the rolling reduction ratio. According to this FIG. 2, the rolling reduction rate is, for example, 10
It is recognized that by controlling the circumferential speed of the rolls of the rolling mill 11 so as to maintain it at or above %, it is possible to produce a metal foil with a clear pattern.

That is, according to the rolling installation @10, even when the yield stress of the metal foil 18 is high, the metal foil 18 can be rolled at a high rolling reduction rate by rolling at different circumferential speeds of the rolling mill 11. In addition, since the outlet contact roll 16 directly contacts only the metal foil 18, the pattern given to the surface of the outlet contact roll 16 does not cause wear due to contact with the floating roll 17, etc. There is no fault. Therefore, it becomes possible to stably transfer a clear pattern onto the surface of the metal foil 18 by rolling.

In addition, in the rolling equipment 10, the skin bath rolling mill 12 is arranged on the exit side of the rolling mill 11.
．． 'i, 1 \! Therefore, it is possible to make the shape of the patterned metal foil 18 excellent. In addition, even if a tensile leveler as shown in 12A is placed instead of skin pass rolling @ 12,
It is possible to obtain similar benefits.

FIG. 3 is a schematic diagram showing another rolling equipment 20 to which the present invention is applied. This rolling equipment 20 is different from the rolling equipment IO described above, in that instead of the CBS rolling type rolling mill 11, a PVjll described in Japanese Patent Publication No. 50-101125 is used.
The point is that local pressure [Ia21] is used.

The rolling mill 21 rotates a pair of adjacent drive rolls 22.23 in opposite directions and at different circumferential speeds, and rolls the metal foil 18 while being wound around the re-drive rolls 22.23.

In this rolling equipment 20, a concavo-convex pattern or a pattern based on difference in gloss as shown by 23A is provided on the surface of the drive roll 23 on the exit side, so that the pattern 23A can be transferred onto the surface of the metal foil 1B by rolling.

Here, the rolling reduction rate r (%
) is the circumferential speed v3 of the low-speed lIK roll 22 on the entry side,
Due to TI4″11 degrees v4 of the high speed drive roll 23 on the exit side.

It is given by r-[1-(V3/V4)]X100 = (2).

According to this rolling equipment 20, even when the yield stress of the metal foil 1B is high, the rolling machine 21 can roll the metal foil 1B at different circumferential speeds.
It is possible to roll the steel at a high reduction rate. Also,
II! The pattern imparted to the surface of the L roll 23 does not wear out due to the presence of the backup roll, etc. Therefore, it becomes possible to stably roll and transfer a clear pattern onto the surface of the metal chain L8.

FIG. 4(A) shows that in the above-mentioned Xing Shusoku Special Rolling Row 11,
FIG. 3 is a schematic diagram showing a rolling method in which the angle at which the metal foil 1B is wound around the circumferential surface of the contact roll 16 is made smaller. Further, FIG. 4(B) is a schematic diagram showing a rolling method in which the winding angle of the metal 11jl18 with respect to the man of the contact roll 15 is minimized in the same rolling @11. In addition, No. 411 (C) is the metal 1! on the contact roll 15, 16 surface in the same rolling mill 11! $18
FIG. 2 is a schematic diagram showing a rolling method in which the winding angle is made smaller.

FIG. 4(D) shows the first drive roll 31. The second driving rolls 32.13 The driving rolls 33 are arranged in tandem, and the first driving rolls 32.
The first floating roll 34 is arranged near the gap between the roll 31 and the second driving roll 32, and the second floating roll 35 is arranged near the gap between the second driving roll 32 and the third driving roll 33. FIG. 3 is a schematic diagram showing a rolling method using a high-speed special rolling mill 30. The metal foil 18 is rolled in the gaps formed by each of the first drive roll 31, the second drive roll 32, and the 1s1 floating roll 34, and is rolled in the gap formed by the second drive roll 32. Rolling is performed in the gap formed between each of the third drive rolls 33 and the second floating IILE kneader 35.

FIG. 4(E) shows the upper roll 41. first drive roll 42,
2nd drive WJJ roll 43. The lower rolls 44 are arranged in a column a,
hill! FIG. 4 is a schematic diagram showing a rolling method using a special rolling mill 40 with different circumferential speeds in which a floating roll 45 is arranged near the gap between IA dynamic rolls 42 and 43. The metal foil 1B is rolled in the gaps formed by each of the iq drive rolls 42 and 43 and the floating roll 45, and is rolled in the gaps formed by the upper roll 41 and the first drive roll 4.
2 and the gap between the second drive roll 43 and the lower roll 44.

FIG. 4(F) shows a first drive roll 51, a second drive roll 52. Different circumferential speed special rolling mill 50 in which third drive rolls 53 are arranged in a triangular shape, and a floating roll 54 is arranged in the center of the gap formed by each of the drive rolls 51 to 53.
FIG. The metal foil 1B is rolled in the gap formed between each of the driving rolls 51 to 53 and the floating roll 54.

Figure 4 (G) is a rolled A50 similar to the above s4 figure (F).
, the metal foil L8 is transferred to the B1 drive roll 5! , is a schematic diagram showing a rolling method in which rolling is carried out in the gap formed between each of the third drive rolls 53 and the floating roll 54.

m4(ffl (H) is the !th drive 1ff-/l/61
．． The second driving roll 62 and the third driving roll 63 are arranged in a triangular shape, and the first floating roll 64 and the second floating roll 65 are placed approximately in the center of the gap formed between each of the driving rolls 61 to 63. It is a schematic diagram which shows the rolling method by the different speed special rolling @60 which arrange|positions. The metal foil 18 has a gap between the first driving roll 61 and the first floating roll 64, a gap between the second driving roll 62 and the first floating roll 64, and a gap between the first floating roll 64 and the second floating roll 65. gap, 3rd
Rolling is performed in each of the gaps formed between the drive roll 63 and the second floating roll 65.

[Effects of the Invention] As described above, the present invention provides a method for manufacturing a patterned thin metal sheet, in which two or more drive rolls having different circumferential speeds are arranged, and a metal plate is wound around each drive roll and rolled. A predetermined pattern is provided on the surface of the exit drive roll, and the pattern is transferred to the surface of the metal plate. Therefore, it becomes possible to stably roll and transfer a clear pattern onto the surface of a thin metal plate.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing an example of rolling equipment that can be used to implement the present invention, FIG. 2 is a diagram showing the relationship between rolling reduction rate and transfer rate,
FIG. 3 is a schematic diagram showing another rolling equipment to which the present invention is applied, and FIGS. 4(A) to (H) are schematic diagrams showing other examples of different circumferential speed special rolling mills. 10... Rolling equipment, 11... Rolling machine, 15.16.
... Drive roll, 16A... Pattern, 18... Metal foil, 20... Rolling equipment, 21... Rolling machine, 22.23
...Drive roll, 23A...pattern. Agent Patent Attorney Osamu Shiokawa Applause 1 Figure 10 --- One rolling sub-negation 16A --- Pattern 21 --- One rolling right 22. 23 --- One expulsion roll 23 A - --- Mr. Ichisakura Figure 2 Figure 3 Figure 4 (A) Figure 4 (B) 11-m-\ Figure 4 ((j

Claims (1)

[Claims] (1) A method for producing a patterned thin metal plate, in which two or more drive rolls having different circumferential speeds are arranged, and a metal plate is wound around each drive roll and rolled, the method comprising: A method for manufacturing a patterned thin metal plate, which includes imparting a pattern to the surface of the metal plate and transferring the pattern to the surface of the metal plate.