KR101753697B1

KR101753697B1 - Rolling roll

Info

Publication number: KR101753697B1
Application number: KR1020150057997A
Authority: KR
Inventors: 조광섭; 명순호; 조헌호
Original assignee: (주)귀주금속
Priority date: 2015-04-24
Filing date: 2015-04-24
Publication date: 2017-07-05
Also published as: KR20160127256A

Abstract

The present invention relates to a rolling roll used in a metal wire production process, in which one or more balls are formed, comprising: a first spherical surface (110) having a predetermined radius (R) (R ') greater than a radius (R) of the first cavity surface (110) on both sides of the first cavity surface (110) and a vertical axis And a second concave surface 120 having a center point C 'on the first concave surface 110. The first concave surface 110 and the second concave surface 120 are connected to each other, One or more of them.

Description

[0001] Rolling roll having a ball shape for metal wire processing [0002]

The present invention relates to a rolling roll having a hollow shape for metal wire processing, and more particularly, to a rolling roll (10) used in a metal wire production process, in which at least one ball is formed, (R ') greater than a radius (R) of the first cavity surface (110) on both sides of the first cavity surface (110), the first cavity surface , And a second spherical surface (120) having a center point (C ') on a vertical axis on which the center point (C) of the first spherical surface (110) is located, the first spherical surface The present invention relates to a rolling roll 10 having a hollow shape for metal wire processing, which comprises at least one ball 100 formed by connecting the first and second balls 120 and 120 to each other.

Generally, a metal wire is used in a semiconductor industry field, etc., and is subjected to a circular forging operation in which a molten metal is melted and a molten metal is kneaded or pressed with a hammer or the like by a mechanical method, A cross-section is rolled through a material to form a square bar, and the material is passed through a circular dies die and drawn to reduce the cross-section.

In the rolling process during the metal wire forming process, the two rolling rolls are vertically positioned and rotated in opposite directions to each other, passing through the wire base material between the square shaped cavities formed on the outer circumferential surface of the rolling roll, A square bar is formed by forming the square shape of the square shape.

However, when a rectangular rod formed through a rolling roll having a rectangular-shaped ball is passed through a circular dies die, the rectangular corner angle of the wire cross-section turns into a round shape, This compressive force causes wrinkles to occur, which causes a problem of overlapping and fine cracks on the wire surface during wire processing.

In addition, it is possible to manufacture a wire using an expensive metal material such as platinum and to use it as an electrode for cleaning in an electrolytic electrode and a semiconductor process. However, since the wire base material rolled through the rolling roll having the square- When used as an electrolytic electrode, ionic discharge occurs due to micro-cracks remaining on the surface of the wire, making it difficult to use for a long time, and the released ions act as impurities, making it impossible to use the electrode as a cleaning electrode in a semiconductor process, When used for fastening, small scratches and fine cracks are used at a high temperature (1200 ° C. or higher) and exposed to the atmospheric gas to accelerate the curing speed, shortening the time required for dropping off, There is a problem that the productivity due to replacement is deteriorated.

In order to solve such a problem, a "roll type integral type hollow roll for rolling material" of the following Patent Document 1 has a roll body mounted on a rolling mill and rotated and driven; A hollow body integrally formed with the roll body and having a plurality of carvers for rolling the material; And a hollow portion slip preventing means provided cooperatively in close contact with the roll body to prevent slip between the roll body and the hollow portion; Is disclosed.

However, in the above-described conventional method, since the circular shape formed on the outer circumferential surface of the rolling roll is formed in a circular shape, when the wire is formed into a circular shape through the rolling process, only the rolling roll is idle, .

Patent Document 1: Korean Patent No. 10-0782751

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a rolled metal roll Can be formed into an elliptical shape and a circular shape so that the generation of wrinkles on the surface of the metal wire when passing through a circular dies mold for drawing operation is effectively reduced so that fine scratches and overlapping phenomena do not occur on the surface of the wire To rolling rolls provided with balls for metal wire processing.

In addition, since fine scratches and overlapping phenomena do not remain on the surface of the wire, it is possible to increase the service life of metal wires using expensive precious metals such as platinum and to reduce the cost of repetitive replacement, Rolling roll.

In order to solve the above problems, a rolling roll having a hollow shape for metal wire processing according to the present invention is used in a metal wire production process, and in a rolling roll having at least one ball shape, (R ') greater than a radius (R) of the first spherical surface (110) on both sides of the first spherical surface (110), the first spherical surface , And a second spherical surface (120) having a center point (C ') on a vertical axis on which the center point (C) of the first spherical surface (110) is located, the first spherical surface ) And the second spherical surface (120) are connected to each other.

Also, the first cavity surface 110 is formed to a position of the first cavity surface formation depth H that is smaller than the radius R. [

The first concave surface forming depth (H) has a value of 0.25 to 0.5 of the first concave surface radius, and the radius (R ') of the second concave surface is a value of the first concave surface radius (R) And has a value of 1.2 to 1.5.

The first cavity surface 110 and the second cavity surface 120 are formed of a spline curve connection part 130. [

The radius R of the first spherical sides may be sequentially arranged in a ratio of 0.65 to 0.75 times the outer circumferential surface of the rolling roll 10, .

As described above, according to the present invention, since the first and second spherical surfaces having different radii of curvature are formed to be connected to each other, the spherical shape formed along the outer circumferential surface of the rolling roll is formed by connecting the rolled metal The shape of the material is shaped into an ellipse and a circle so that the occurrence of wrinkles on the surface of the metal wire when passing through a circular dies frame for drawing work is effectively reduced to prevent fine scratches and overlapping on the wire surface There are advantages to be able to.

In addition, the use period of the wires manufactured using expensive precious metals such as platinum can be increased to reduce the cost due to repetitive replacement, and the productivity can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view showing a state in which a rolling roll having a hollow shape for metal wire processing is vertically engaged with a rolling roll according to a preferred embodiment of the present invention. FIG.
FIG. 2 is a front view showing a configuration of a rolling roll having a hollow shape for metal wire processing according to a preferred embodiment of the present invention; FIG.
FIG. 3 is an enlarged view showing a configuration of a ball formed in a rolling roll having a ball shape for metal wire processing according to a preferred embodiment of the present invention. FIG.

Hereinafter, the present invention will be described in detail with reference to the drawings. Like reference symbols in the drawings denote like elements.

FIG. 1 is a plan view showing a state in which a rolling roll having a hollow shape for metal wire processing according to a preferred embodiment of the present invention is vertically engaged. FIG. 2 is a plan view of a roll for metal wire processing according to a preferred embodiment of the present invention. FIG. 3 is an enlarged view showing a configuration of a ball formed in a rolling roll having a hollow for metal wire processing according to a preferred embodiment of the present invention. FIG.

Referring to FIGS. 1 to 3, a rolling roll having a hollow shape for metal wire processing according to a preferred embodiment of the present invention includes a hollow 100, a first hollow surface 110, a second hollow surface 120 .

At least one of the balls 100 is formed on the outer circumferential surface of the rolling roll 10 so that the shape of the metal material is formed by the pressure of the rolling roll during the rolling operation. The first and second balls 100, The first and second spherical surfaces 110 and 120 are formed on both sides of the first and second spherical surfaces 110 and 110, respectively.

In this case, as the shape of the metal wire after the rolling process is formed into the elliptical shape and the circular shape, even though the metal wire is passed through the circular dies die and the drawing operation is performed to reduce the cross- It is possible that there is no occurrence of fine cracks and overlapping of the wire ends.

The first cavity surface 110 is located at the center of the cavity 100 and has a predetermined radius R and is formed to have a shape of a part of a circle of a regular circle. (H) smaller than the radius (R) of the first spherical surface so that the second spherical surface (120) can be continuously connected to both sides of the first spherical surface (120).

Wherein the second spherical surface 120 has a radius R 'greater than a radius R of the first spherical surface 110 on either side of the first spherical surface 110, (C ') on the vertical axis on which the center point (C) is located.

Due to the spherical shape 100 having the first and second spherical surfaces 110 and 120 configured as described above, the rolling shape of the rolling roll is formed only in a circular shape when the metal material is rolled, It is possible to prevent the wire base material from being rolled and the rolling roll to be idle, as well as to effectively reduce the twisting phenomenon of the wire.

On the other hand, the first concave surface formation depth H is set to be 0.25 or less of the radius R of the first convex surface 110 so that the shape of the metal wire preform can be more smoothly processed, To 0.5 times.

In this case, it is more preferable that the first concave surface formation depth H has a value which is one third of the radius R of the first convex surface 110.

The radius R of the second spherical surface 120 may be 1.2 to 1.5 times the radius R of the first spherical surface 110, Of the radius (R) of the center of gravity.

Due to the above-described structure, it is possible to roll the metal wire base material in elliptical and circular shapes without forming a protruding portion on the wire surface. Accordingly, even if a wire passes through a round dies die for a drawing operation, wrinkles are generated on the surface of the wire due to the compression force of the die, there is no phenomenon of micro cracks, and there is a problem that wire surface overlapping occurs .

Next, the first and second spherical surfaces 110 and 120 are preferably formed of spline curved connecting portions 130 so that the connecting portions between the two spherical surfaces are connected smoothly and smoothly .

In this case, as the first and second spherical surfaces 110 and 120 are continuously connected to each other, by the edge portions formed between the first and second spherical surfaces 110 and 120, It is possible to prevent fine cracks, depressed grooves, and the like from being formed on the surface of the base material.

In addition, when the metal wire is processed through the rolling roll 10 having the shape 100 as described above according to the present invention, even if the wire base material made of expensive noble metal material is rolled, And groove grooves are not present, it is possible to improve the wire use period, and it is possible to solve the problem that the productivity is lowered due to the additional cost burden and repeated replacement.

Particularly, since it is possible to easily process platinum wires used in various fields such as electrolytic electrodes and cleaning electrodes in a semiconductor process, it is difficult to use for a long time due to the generation of ions due to micro cracks remaining on the wire surface. So that it becomes impossible to use the ion as a cleaning electrode in a semiconductor process.

Next, the casting 100 is sequentially disposed along the outer circumferential surface of the rolling roll 10 from one side to the other side, and the radius R of the first convex surface is sequentially decreased in a ratio of 0.65 to 0.75 .

According to this configuration, it is not necessary to provide a rolling roll having a single-size ball shape for each size of the coarse size so as to process a wire of a desired size, so that a rolling device for metal wire processing is operated on a small scale It is possible.

Optimal embodiments have been disclosed in the drawings and specification. Although specific terms have been employed herein, they are used for purposes of illustration only and are not intended to limit the scope of the invention as defined in the claims or the claims. Therefore, those skilled in the art will appreciate that various modifications and equivalent embodiments are possible without departing from the scope of the present invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

10: rolling roll 100:
110: first cavity surface 120: second cavity surface
130: Spline curve connection

Claims

In a rolling roll used in a metal wire production process, in which one or more balls are formed,
A first cavity surface (110) having a predetermined radius (R) and having a shape of a part of a surface circle;
(R ') greater than a radius (R) of the first cavity surface (110) at both sides of the first cavity surface (110) and a center point (C) of the first cavity surface And a second spherical surface (120) having its center point (C ') on the vertical axis,
Wherein the first concave surface (110) and the second concave surface (120) are connected to each other to form a concavity (100)
Wherein the first cavity surface (110) is formed to a position of a first cavity surface formation depth (H) that is less than a radius (R)
The first concave surface forming depth H has a value of 0.25 to 0.5 times the radius R of the first concave surface 110,
The radius R 'of the second spherical surface 120 is 1.2 to 1.5 times the radius R of the first spherical surface 110,
Wherein the first and second spherical surfaces 110 and 120 are formed by a spline curve connecting portion 130. The rolling roll 10 having a hollow shape for metal wire processing.

delete

The method according to claim 1,
The rolls (100) are arranged in order from one side to the other along the outer circumferential surface of the rolling roll (10)
And the radius R of the first radius of curvature is sequentially decreased in a ratio of 0.65 to 0.75 times.