JPH06297038A - Take-up device for metallic bar stock provided with flame processing device - Google Patents

Abstract

PURPOSE:To prevent the generation of the partial elongation and wrinkle of a metallic bar stock by arranging tension cutting devices before and behind a flame processing device. CONSTITUTION:An aluminum bar stock C which is taken up into a roll shape is fed to a bridle roll 5 above which a burner A is provided through a tension roll 2 and tension cutting devices 3, 4 and flame processing is applied. The rear of the stock is processed with a bridle roll 6 and burner B. The processed bar stock is taken up with a take-up roll 15 through tension cutting devices 8, 9, a tension roll 10, etc. In such a manner, at least one flame processing device 5, A (6, B) is provided and at least one of tension cutting devices 3, 4, 8, 9 is arranged before and behind that. In this way, the flame processing is excellently performed in uniformity of surface properties in the width and length directions and productivity.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for annealing and degreasing a metal strip after rolling (in the present invention, a metal strip means a metal foil or plate having a thickness of 5 μm to 3 mm). A frame treatment device that effectively prevents wrinkles from occurring on metal strips for frame treatments that have high wettability in the width direction and length direction of the strips and high uniformity of surface characteristics such as oxide films, and are highly productive. The present invention relates to a winding device for a metal strip.

[0002]

2. Description of the Related Art Many metals are relatively inexpensive and have excellent mechanical suitability for their price. Therefore, they are inexpensive conductive materials and, in the case of precious metals, have excellent chemical corrosion resistance and decorative properties. Therefore, it is widely used as an industrial material and an electric material.

Especially in the fields of packaging materials, electrical materials, daily necessities, ornaments, industrial materials, etc., a large amount of metal foil (about 5 μm to 200 μm) or metal thin plate (about 200 μm to 3 mm) is used for this purpose. Being produced.

These metal strips are generally slab-shaped metal that is rolled using a roll, but the surface after rolling is covered with rolling oil used during rolling, and the metal strips for printing, lamination, etc. Often an obstacle to secondary processing. For this reason, it is usual to anneal the rolled metal strips for degreasing (removal of rolling oil). Usually, it is often done with the metal strip wound in a coil, but it was not without frame treatment.

In this case, when the material of the metal strip is a metal having a relatively high melting point such as iron, it does not matter so much, but when it is a metal having a relatively low melting point such as aluminum, copper or alloys thereof, degreasing is performed. In some cases, softening of the material due to annealing and annealing progresses at the same time, and degreasing may cause excessive softening of the metal.

In the frame processing, 150 metal strips are used.
Since degreasing and annealing are performed by contact with a flame at 0 ° C or higher for an extremely short time, the running speed of the metal strip and the heating capacity of the burner are not sufficiently degreased or annealed due to slight errors. It causes troubles such as excess.

Particularly, in a winding device such as a separator or a slitter, since there is usually only one tension cut, the portion subjected to high temperature flame treatment is softened (decreased in strength), and when pulled at a high speed, a slight tension is applied. Even when the change occurs, the aluminum strip may be elongated or wrinkles may be generated.

For this reason, so-called batch annealing, in which annealing is performed while wound in a coil shape, which has problems such as non-uniformity of degreasing in the width direction and long time required, becomes the mainstream, and the surface characteristics in the width direction and the length direction are reduced. Despite some excellent features such as uniformity and high productivity, it seems that this was the reason why annealing degreasing by flame treatment was rarely carried out except for special cases.

However, although various measures have been taken for the unevenness of the metal strip surface characteristics in the width direction and the low productivity due to the batch annealing, this problem is a basic one, and its solution is solved. Is extremely difficult.

The present invention therefore seeks to improve a winding device for metal strips with a frame treatment, which has the advantages of uniform surface properties, high productivity and the like.

[0011]

The present invention is a separator,
When annealing and degreasing by attaching a frame processing device to a slitter, etc., when the metal strip running at high speed in contact with the high temperature frame is softening (decreasing strength),
It is an object of the present invention to develop a metal strip winding device equipped with a frame processing device that prevents excessive extension of metal strips and the generation of wrinkles.

[0012]

According to the present invention, there is provided at least one frame processing device, and at least one tension cutting device is arranged before and after the frame processing device. A frame processing method for a metal strip, characterized in that at the time of performing frame processing on a winding device and a rolled metal strip in a separator, a slitter, or off-line, at least one tension cutting device is provided before and after the frame processing device. The above-mentioned object was achieved by developing.

The metal strip to which the present invention is applied is a soft, low-melting metal such as aluminum, copper or an alloy thereof; a noble metal such as gold, silver or platinum; a relatively hard or high metal such as iron or stainless steel. Rolled metal foil (5 to 200 μm or so) of melting point metal, thin metal plate (200 μm)
-3 mm). Particularly, it is preferably used for a metal strip of a soft low melting point metal or a noble metal.

The present invention will be described below with reference to aluminum strips. The aluminum strips may be pure aluminum for general industry (including electrolytic aluminum and ordinary pure aluminum) or aluminum alloy, and in particular, aluminum strip may be used. There is no limit. Although the thickness of the aluminum strip is not particularly limited, it is generally about 5 μm to 3 mm.

In the frame treatment, a separator or slitter in the rolling process or product process is used as a single aluminum strip (especially when two thin foils are rolled in a stack, two strips may be stacked) or a separator. , A coil-shaped aluminum strip wound by a frame processing device provided in any line during the process from the slitter, etc. to the aluminum strip winder or through a separator, slitter, etc. It can be performed in a process in which an offline frame processing device is installed. When considering ease of operation and productivity, it is easier to use the inline method at once. Regarding the device of the present invention,
FIG. 1 shows an example of the flow sheet.

In this example, a frame processing device is incorporated in the slitter. For example, when a rolled aluminum strip is separated and the material wound on a roll is slit and simultaneously subjected to a frame treatment, there is one as shown in FIG. 1 (for double-sided treatment).

The aluminum strip (C) wound into a roll passes through a tension roll (2), tension cutting devices (nip rolls) (3) and (4), and a bridle roll (5) provided with a burner (A). Is supplied to. The bridle roll (5) is driven by a motor (not shown), and the aluminum strip is wound around more than about half of the circumference of the roll with the help of another tension reel or the like. The roll is cooled by circulating cooling water or the like.

The burner (A) is a bridle roll (5)
Is provided so as to spray the frame on the aluminum strip (C) on the surface of the roll. Here, the aluminum strip whose surface has been heated and oil has been burned is cooled by the cooling roll in contact therewith and is also cooled after leaving the frame, so that the annealing of the aluminum strip is prevented. In this example, since the back side frame processing is subsequently performed, the bridle roll (6) and burner (B)
Is processed in the same way. Next, the aluminum strip (C) from which oil has been removed is tension reel (7), tension cutting device (nip roll) (8), (9), tension roll (10), upper blade (cutter) (11), lower blade ( After passing through the cutter (12) and then through the tension cutting devices (nip rolls) (13) and (14), the take-up roll (15) winds the film.

Tension-cutting devices (3), (4) and (8), (9) are installed before and after the bridle rolls (5), (6) which are frame-treated in this way, and are heated by a high-temperature frame. The softened and softened aluminum foil can be processed without fluctuation in tension. of course,
It is more preferable to provide the tension cutting device for each frame processing device, though the cost increases in terms of equipment.

Further, when the annealed aluminum foil is slit, fluctuations in tension also cause wrinkles, so it is preferable to install tension cutting devices before and after that.

In the above description, the tension cutting device is shown as a nip roll type tension cutting system, but during the frame processing before and after the frame processing device, the tension of the aluminum foil running at high speed is made independent from other operations. The method does not matter as long as it is a device that does not change.

Although the bridle rolls (5) and (6) were described as being cooled, a device capable of producing a semi-hard or soft aluminum strip in one pass when used as a heating roll in which heating oil is circulated or enclosed in an electric heater. Can be

In the above description, the slitter has been described. However, the frame processing device may be incorporated in the separator, or may be installed in the line between the separator and the winder, or may be continuously processed offline. Of course, it's good.

In the flame treatment of the present invention, the type of metal, the calorific value of the burner, in this case the thickness of the aluminum strip, the type of rolling oil and the amount of residual oil, the target contact angle of the aluminum strip with pure water. Generally, high-speed processing of about 100 to 1000 m / min is possible, though it depends on whether it is in-line or offline.

Prior to the frame treatment, the type of rolling oil adhering to the aluminum strip, the amount of rolling oil deposited, the aluminum material of the intended product aluminum strip, the mechanical strength, the thickness of the strip, and the target aluminum strip. Since the energy supplied per area changes depending on properties such as the contact angle with water, it is preferable to measure it experimentally. A small amount of degreasing may be required when sufficient annealing is performed in another annealing step. Separately, when an aluminum strip with high mechanical strength is required, sufficient rolling oil removal is required only by flame treatment. Because.

[0026]

According to the present invention, when the rolled metal strip is annealed and degreased, it is subjected to a flame treatment which is excellent in the uniformity of the surface characteristics (degreasing and oxide film formation) in the width direction and the length direction and the productivity. When the aluminum foil is partially stretched,
The cause of wrinkles was examined. As a result, the usual separator, the slitting of the slitter, etc. was not a problem at all in the partial aluminum foil extension, wrinkles occurred, running at high speed, in contact with the frame, heated to a high temperature, The softened part influences the aluminum foil even in the fluctuation of the tension, which was not a problem at room temperature, and this partly extends,
We found that it was the cause of wrinkles.

The above troubles can be prevented by providing tension cutting devices before and after the frame processing device to eliminate the fluctuation of the tension in the aluminum foil subjected to the frame processing.

[0028]

According to the present invention, by disposing the tension cutting devices before and after the frame processing device, the metal strip is partially stretched and wrinkles are generated which has been a problem in the annealing and degreasing process of the metal strip by the frame treatment. Solved the problem.

The frame treatment is a method which is excellent in the uniformity of surface characteristics in the width direction and the length direction and is excellent in productivity, but the present invention can be incorporated in a separator, a slitter or the like, or can be easily carried out off-line.

Further, by performing the flame treatment on a roll whose surface temperature can be adjusted, it is possible to adjust the annealing independently of the degreasing to some extent.

[Brief description of drawings]

FIG. 1 is an example of a slitter device provided with a frame processing device.

[Explanation of symbols] 1 auxiliary roll 2 tension roll 3 drive roll 4 nip roll 5 bridle roll 6 bridle roll 7 auxiliary roll 8 drive roll 9 nip roll 10 tension roll 11 drive roll 12 nip roll 13 drive roll 14 nip roll 15 winding roll A burner B Burner C metal foil

Claims (2)

[Claims] 1. A winding device for a metal strip having a frame processing device, wherein at least one frame processing device is provided, and at least one tension cutting device is arranged before and after the frame processing device. 2. A frame processing method for a metal strip, which comprises performing at least one tension cutting device before and after the frame processing device when performing frame processing on a rolled metal strip in a separator, a slitter or off-line.