JPH09122736A - Method for removing attached object on surface of metal bar - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the deterioration of a surface quality, and to improve the yield of a product by moving a metal bar in a prescribed direction, and making a belt member moving in the opposite direction to the moving direction of the metal bar come into contact with the surface of the metal bar by a prescribed pressing force. SOLUTION: Before taking up a metal bar 5, it is passed through between the two wiping-out belts 1A and 1B of removing devices 6A and 6B for attached objects on the surface of the metal bar. Next, after coiling the wiping-out belts 1A and 1B on drive rolls 3A and 3B, the wiping-out belts 1A and 1B are allowed to come into contact with both surfaces of the metal bar 5 by pressing-down rolls 4A and 4B with a prescribed pressing force. The wiping-out belts 1A and 1B are sent out, and they are moved in the arrow B directions. Simultaneously with these movements, the taking-up of the metal bar 5 is started. Attached objects on the surface of the metal bar 5 are moved by the wiping-out belts 1A and 1B, and the wiping-out belts 1A and 1B are coiled by drive rolls 3A and 3B.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for removing surface deposits on metal strips, and more particularly to a method for removing surface deposits on metal strips while preventing deterioration of surface quality and improving product yield.

[0002]

2. Description of the Related Art Generally, metal strips are obtained by chamfering the surface of an ingot produced by melting and casting, cutting it into a predetermined size, further hot rolling, and then cold rolling-annealing- It is manufactured by repeating the steps of oxide scale removal to obtain a desired size.

In such a manufacturing method, metal powder, other metal pieces, and foreign matter generated by abrasion of rolling during rolling work adhere to the surface of the metal strip and are pushed into the metal strip by subsequent rolling. There is a problem that the surface quality of the metal strip deteriorates and the yield decreases. In particular, in the case of metal strips for semiconductors, improvement of the surface characteristics thereof has been required more and more due to the recent demand for reliability of ICs, which has left a big problem.

Therefore, conventionally, in order to remove metal abrasion powder adhered to the surface of the metal strip due to rolling, other metal pieces, foreign matters, etc., a cloth fixed at a specific place in the processing step is next. It is forcibly pressed against the surface of the metal strip sent to the process.

[0005]

However, when the deposits on the surface of the metal strip are removed as described above, the deposits are deposited on the fixed cloth or the like, and the deposited deposits cause the deposits on the surface of the metal strip. There are inconveniences such as generation of streaks and the like, the surface quality of the metal strip to be sent to the next step is remarkably deteriorated, and the yield of products is reduced.

Therefore, an object of the present invention is to provide a method for removing surface deposits on metal strips, which can prevent deterioration of surface quality and improve product yield.

[0007]

SUMMARY OF THE INVENTION In view of the above problems, the present invention moves a metal strip in a predetermined direction in order to prevent the deterioration of surface quality and improve the yield of products. The present invention provides a method for removing surface deposits on a metal strip, in which a belt member moving in the direction opposite to the moving direction of the metal strip is brought into contact with the surface of the metal strip with a predetermined pressing force.

Thus, the metal strip is moved in a predetermined direction, and the belt member is moved in a direction opposite to the moving direction of the metal strip while the belt member is brought into contact with the surface of the moving metal strip with a predetermined pressing force. Then, the belt member supplied to the surface of the metal strip is wound up after wiping the surface of the metal strip,
The deposit adhered to the surface of the metal strip is removed by the belt member continuously supplied.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION A method for removing surface deposits on a metal strip according to the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 shows a first embodiment of the method for removing surface deposits on a metal strip according to the present invention, in which a cleaning step in the manufacturing process of the metal strip or a pre-stage of a winding section in a rolling step is performed.
Metal strip surface adhered matter removing devices 6A and 6B are arranged.

The metal strip surface deposit removing devices 6A and 6B are
Supply rolls 2A, 2 around which the wiping belts 1A, 1B are wound
B and the wiping belts 1A, 1B of the supply rolls 2A, 2B in a direction opposite to the moving direction of the metal strip 5 (direction of arrow A) (arrow B).
Drive rolls 3A and 3B, and the wiping belt 1 between the supply rolls 2A and 2B and the drive rolls 3A and 3B.
It is composed of pressing rolls 4A and 4B which bring A and 1B into contact with the surface of the metal strip 5 with a predetermined pressing force.

Next, the procedure of the method for removing surface deposits on metal strips will be described. First, before winding the metal strip 5,
The metal strip surface deposit removing devices 6A and 6B are passed between the two wiping belts 1A and 1B. Then, at the same time when the operation is started, the wiping belts 1A and 1B are wound around the drive rolls 3A and 3B, and then the wiping belts 1A and 1B are pressed by the pressing rolls 4A and 4B.
Are brought into contact with both surfaces of the metal strip 5 with a predetermined pressing force.

After that, the drive rolls 3A and 3B are driven to sequentially feed the wiping belts 1A and 1B from the supply rolls 2A and 2B, and the wiper belts are wound around the drive rolls 3A and 3B via the pressing rolls 4A and 4B. Belt 1A,
1B is continuously moved in the direction of arrow B, and the winding of the metal strip 5 is started.

When the wiping belts 1A, 1B and the metal strip 5 move in opposite directions in this manner, the wiping roll 1 is continuously supplied with the deposits on the surface of the metal strip 5.
After being removed by A and 1B, the wiping belts 1A and 1B wipe the surface of the metal strip 5 and then are wound by the drive rolls 3A and 3B.

After being removed, the metal abrasion powder and other deposits are removed along with the wiping belts 1A and 1B from the drive roll 3A.
It is rolled up to 3B. Therefore, the wiping belts 1A, 1
It is possible to prevent deposits from accumulating on the wiping portions of B and the metal strip 5, and to prevent streaks from occurring on the surface of the metal strip 5.
The metal strip 5 from which the deposits have been removed in this manner can be manufactured as a metal strip having excellent surface quality by being subjected to the next step or by being finished into a product, and the product yield can be improved. it can.

In the above embodiment, the moving speed of the wiping belt is not particularly limited, but the range of 1/500 to 1/50 of the moving speed of the metal strip is the most economical and , Become effective. As for the material of the wiping belt, cotton, or other cloth, nylon, Teflon, or rubber can be used. It is also possible to repeatedly use a belt that has been used once by removing the metal powder and the like attached to it.

The location of the apparatus for removing deposits on the surface of a metal strip is not particularly limited, and it can be located at any location in the process. Further, the two belts may not be arranged at the same position but may be arranged at different places.

Further, the above-mentioned method for removing deposits is preferably applied to the production of metal strips for semiconductors, whose surface characteristics are further required to be improved due to the requirement for reliability of ICs, but the production of other metal strips. May be applied to. Also,
Not only flat metal strips, but also metal strips of irregular cross section and other shapes can be applied.

[0019]

As described above, according to the method for removing surface deposits on a metal strip of the present invention, the metal strip is moved in a predetermined direction, and the moving direction of the metal strip is opposite to the moving direction of the metal strip. Since the belt member that moves in the direction is brought into contact with a predetermined pressing force, deterioration of the surface quality can be prevented and the yield of products can be improved.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a first embodiment of the present invention.

[Explanation of symbols]

 1A, 1B Wiping belt 2A, 2B Supply roll 3A, 3B Drive roll 4A, 4B Pressing roll 5 Metal strip 6A, 6B Metal strip surface deposit removal device

Claims (1)

[Claims] 1. A method for removing surface deposits on a metal strip for removing deposits deposited on the surface of the metal strip, wherein the metal strip is moved in a predetermined direction, and the metal strip is moved to the surface of the moving strip. A method for removing surface deposits on metal strips, which comprises contacting a belt member moving in a direction opposite to a predetermined direction with a predetermined pressing force.