JPH07238357A - Flame treatment device for metallic bar - Google Patents

Abstract

PURPOSE:To facilitate adjustment of a heating quantity and control a resin by controlling a heating piping system for supplying fuel and air to a burner according to the adhesion of a rolling oil, an objective degree of degreasing, etc. CONSTITUTION:A metallic bar 1 of rolled Al, etc., is supplied to a bridle roll 4. The flame of the burner 3 is blown to this metallic bar 1 to incinerate the oil-component adhered to the surface of the metallic bar 1. At that time, the traveling speed of the metallic bar 1 is previously detected, the adhesion of the rolling oil or the adhesion of the rolling oil after the flame treatment, the kinds of the rolling oil, the objective degree of degreasing, etc., are measured. Adequate heating is executed by regulating opening and closing of solenoid valves of a fuel supply system and air supply system in the heating piping system by a controller 10. As a result, the flame treatment of the metallic bar 1 is executed at a high speed of about 100 to 1000m/min.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to the width of a metal strip in a degreasing process of a rolled metal strip (metal strip in the present invention means a metal foil or plate having a thickness of 5 μm to 3 mm). TECHNICAL FIELD The present invention relates to a frame processing apparatus for frame processing, which has high wettability in water direction and lengthwise direction, high uniformity of surface characteristics such as an oxide film, and high productivity.

[0002]

2. Description of the Related Art Many metals are relatively inexpensive and have excellent mechanical properties for their price. As an inexpensive conductive material, they are also excellent in chemical corrosion resistance and decorativeness for precious metals. Therefore, it is widely used as an industrial material, an electrical material, etc.

Especially in the fields of packaging materials, electrical materials, daily necessities, ornaments, industrial materials, etc., a large amount of metal foil (about 5 to 200 μm) or metal thin plate (about 200 μm to 3 mm) is used for this. Being produced. These metal strips are generally slab-shaped metal that is rolled using rolls, but the surface of the metal strip after rolling is covered with the rolling oil that was used during rolling. It often becomes an obstacle in the next processing. Therefore, it is usual to degrease the rolled metal strip (remove the rolling oil) prior to the secondary processing. In most cases, the degreasing process is usually performed with the metal strip wound in a coil,
In special cases, cleaning with a solvent was performed, and frame treatment was not without exception.

In the case of frame treatment, when the material of the metal strip is a metal having a relatively high melting point such as iron, there is little problem of annealing and frame treatment may be possible as it is, but aluminum, copper or the like may be used. In the case of a relatively low-melting metal such as the alloy of No. 1 or in the case of a high-melting-point metal such as a thin foil, the softening of the material by degreasing and annealing simultaneously progresses. May be.

However, in the frame treatment, since the metal strip is degreased by contact with the frame having a high temperature of 1000 to 1500 ° C. or higher, the running speed of the metal strip and the control of the heating capacity of the burner are caused by a slight error. Since problems such as insufficient degreasing or excessive annealing are expected to occur, there are problems such as non-uniformity in the width direction of degreasing and long time required. So-called batch annealing that is annealed while coiled. Is the mainstream.

However, even though 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. Therefore, the present invention aims to improve a flame processing method which has advantages such as uniformity of surface characteristics and high productivity.

[0007]

DISCLOSURE OF THE INVENTION The present invention relates to conditions for contacting a high-temperature frame with a metal strip, such as the type of rolling oil, the amount of rolling oil deposited, the desired degree of degreasing, and the running speed of the metal strip. Accordingly, it is an object of the present invention to develop a metal strip frame processing device equipped with a control means capable of controlling the degreasing by adjusting the heating amount.

[0008]

According to the present invention, there are provided (a) a temperature-adjustable rotating roll in which a metal strip is wound around a part of the roll surface so that the roll can run, and (b) a metal on the roll surface. Burner provided to frame the strip,
(C) For a metal strip provided with a combustion means provided with a heating piping system for a fuel supply system and an air supply system for supplying to the burner, and (d) means for controlling the heating amount by controlling the heating piping system The above object was achieved by developing a frame processing device.

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 metal such as iron or stainless steel; Rolled metal foil of high melting point metal (5 to 200 μm or so), metal thin plate (200 μm)
-3 mm).

The present invention will be described below by taking an aluminum strip as a representative, but the present invention is not limited to this. The aluminum strip may be pure aluminum for general industry (including electrolytic capacitors and ordinary pure aluminum) or an aluminum alloy, and is not particularly limited. Although the thickness of the aluminum strip is not particularly limited, it is generally about 5 μm to 3 mm.

The frame treatment is a separator in the rolling process,
Where a single aluminum strip such as a slitter is running (especially when two strips of thin foil are rolled, it may be doubled) or during the process from the separator or slitter to the aluminum strip winder Can be performed by a frame processing device installed in any of the lines, or a coiled aluminum strip wound through a separator, a slitter, etc. in a process in which an offline frame processing device different from the line is installed. it can. When considering ease of operation and productivity, it is easier to use the inline method at once.

As for the apparatus, FIG. 1 shows an example of a piping diagram of the burner and the combustion means. Although the drawing shows that there are three heating pipe lines and all of them are supplied to one burner, a burner may be installed for each heating pipe line. Further, the heating pipe series may have the same or different capacities A, B, and C, but for example, when A is 1, B is 2, and C is 4, the combustion capacities become 1 to 7 depending on the combination. Can be changed,
Since there is usually no such a change, it is sufficient that A and B are 2 and B and C respectively.

For example, the running speed of an aluminum strip is detected, the amount of rolling oil adhered thereto in advance, the amount of adhering after the frame treatment (usually indicated by the contact angle with water, etc.),
The target degreasing degree and the like are measured, and the controller (10) adjusts so that the electromagnetic valve (22) of the fuel supply system and the electromagnetic valve (21) of the air supply system are opened and closed to perform appropriate heating. The fuel is preferably heated by gas or liquid fuel. In the above-mentioned device, the description has been given of the mode in which the supply of fuel and air are all turned on and off, but it goes without saying that this may be controlled in an analog manner.

The frame processing apparatus of the present invention may be incorporated into a frame processing apparatus as shown in FIG. 2 (for single-sided processing), for example, when a rolled aluminum strip is separated and the material wound on a roll is subjected to frame processing. The aluminum strip (1) wound into a roll is supplied to a bridle roll (4) provided with a burner (3) via a dancer roll (2). The bridle roll (4) 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 (3) is a bridle roll (4)
Slightly away from, the aluminum strips (8) on the roll surface are provided to blow the frame. Here, the aluminum strip whose surface has been heated and oil has been incinerated 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. Next, the aluminum strip (8) from which oil has been removed is wound in a roll shape by a winder (9) via rubber rolls (5) for preventing wrinkles, bridle rolls (6), auxiliary rolls such as tension reels (7). Taken. In the above description, a single-sided processing device was shown, but if another set of bridle rolls with adjustable temperature and frame burner is provided so that the other surface of the aluminum strip can be processed, double-sided frame processing will be performed at once. You can do it.

Although the bridle roll (4) has been described as being cooled, it should be a device that can produce a semi-hard or soft aluminum strip in one pass when it is used as a heating roll such as circulating heating oil or enclosing an electric heater. You can In the above description, the aluminum strip that has been separated and wound up has been described. However, the frame processing device is combined with a separator or a slitter, or is installed in a line between the separator and the slitter to perform continuous processing. Of course, it is okay to do so.

The flame treatment of the present invention is performed by the calorific value of the burner, the thickness of the aluminum strip, the type of rolling oil and the residual oil amount,
Although it depends on the target contact angle of the product aluminum strip with pure water, whether it is in-line or offline, generally high-speed processing of about 100 to 1000 m / min is possible. 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 target product aluminum strip, the mechanical strength, the thickness of the strip, and the water of the target aluminum strip. Since the energy supplied per area varies depending on the properties such as the contact angle, it is preferable to measure it experimentally. A small amount of degreasing may be sufficient when performing sufficient annealing in another annealing step,
In addition to this, when an aluminum strip having high mechanical strength is required, sufficient rolling oil removal is required only by flame treatment.

Generally, the aluminum strip after frame treatment has a contact angle with water of 70 ° or less, preferably 60 °.
If it is less than the following, it will be an aluminum strip that does not hinder normal use, so it is necessary to perform frame processing within this numerical range as a target. The amount of heat supplied as a frame also varies depending on various conditions, but in general applications it is about 0.1-10 kcal / m ² (one side)
The value is slightly higher than this, especially when it is desired to increase the degreasing degree. The temperature of the cooling roll also changes depending on the rigidity of the target product aluminum strip, burner capacity, aluminum strip thickness, running speed, etc., but is not limited to about 40 ° C or less for rigid strips and about 180 to 300 ° C for semi-rigid strips. The degree of softness is about 250 to 600 ° C. If the obtained aluminum strip is harder than the target rigidity, the roll temperature may be raised, and if it is soft, the roll temperature may be lowered.

Of course, it is also possible to once manufacture an aluminum strip having a rigidity higher than the target, and perform annealing in combination with the conventional batch annealing (the aluminum strip is annealed while being wound in a roll shape). At this time, degreasing in the flame treatment is not required to be complete, and the time required for batch annealing can be significantly shortened. In addition, degreasing by flame treatment is a soft, low melting point metal such as copper or its alloys; noble metals such as gold, silver and platinum; iron,
Of course, it can be applied to a rolled metal strip such as a relatively hard metal having a high melting point such as stainless steel.

[0020]

INDUSTRIAL APPLICABILITY The present invention adjusts the heating amount by degreasing a metal strip by controlling the burning oil adhering amount, the target degreasing degree, the burning ability of the burner according to the running speed of the metal strip, and the like. We have succeeded in performing frame processing without degreasing or excessive degreasing and the accompanying extra annealing. As a result, a degreasing treatment having excellent surface characteristics (degreasing and uniformity of oxide film) in the width direction and the length direction of the metal strip and excellent productivity has been developed.

[Brief description of drawings]

FIG. 1 An example of a flow diagram of a burner, a fuel supply system, and an air supply system

[Fig. 2] Example of single-sided processing device

[Explanation of symbols]

 1 Payoff 2 Dancer roll 3 Burner 4 Bridle roll 5 Wrinkle prevention roll 6 Bridle roll 7 Tension roll 8 Metal strip (aluminum strip) 9 Winder 10 Controller 11 Travel speed detector 12 Fuel gas supply 21 Solenoid valve 22 Solenoid valve 23 Blower 24 Fuel Gas 25 Combustion Monitoring Phototube 26 Ignition Device

Claims (1)

[Claims] 1. (a) A temperature-adjustable rotating roll, in which a metal strip is wound around a part of the surface of the roll so as to run,
(B) a burner provided so as to flame-treat the metal strip on the roll surface, (c) a combustion means including a heating piping system of a fuel supply system and an air supply system for supplying to the burner, and (D) A frame processing apparatus for metal strips equipped with means for controlling the heating pipe system to control the heating amount.