JPH067210A - Method for manufacturing metallic article having inclined pattern - Google Patents

Abstract

PURPOSE:To provide a method for manufacturing metallic articles capable of being simply manufactured for a short time while giving very high yield and inclined patterns preferable for mass production. CONSTITUTION:A plurality of long metallic material bodies 10, 11 having different color tones are joined along each other to form a a composite metallic body 12 which is twisted and subjected to plastic work to form a pattern inclined to the axis on the surface of the composite metallic body 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a metal article having a surface having a slanting pattern with respect to an axis made of a plurality of metal materials having different color tones.

[0002]

2. Description of the Related Art There is a demand for a metal article (for example, a ring) 3 having an inclined pattern made of a plurality of metal materials 1 and 2 having different color tones as shown in FIG.

Conventionally, in order to manufacture such a metal article 3,
As shown in FIG. 3, a metallic material having a different color tone (for example,
18K gold alloy with red color (75% Au-25% Cu)
18K alloy (75% Au-20% Pd-
5% Ag) and 18K alloy (75% Au-1) with yellow color tone
8% Ag-8% Cu, more than wt%)) band materials 4 and 5 are alternately joined to manufacture a plate material 6, and the plate material 6 is applied to the band materials 4 and 5 as indicated by a two-dot chain line in the figure. On the other hand, the strip 7 is obtained by obliquely cutting the strip 7, and after the strip 7 is formed into a ring shape, the ends are brazed to each other.

[0004]

However, in the above-described conventional method for manufacturing a metal article, the plate member 6 obtained by alternately joining the band members 4 and 5 is obliquely cut, and therefore, a large number of them are required. It took a lot of time to join the strips 4 and 5 and the parts other than the cut strip 7 were not useful and the yield was very bad, so that they could not be adopted as a mass production method.

The present invention has been made in view of the above circumstances, and provides a method of manufacturing a metal article having an inclined pattern which can be easily manufactured in a short time and has a very high yield and which is suitable for mass production. With the goal.

[0006]

A method of manufacturing a metal article having a slanted pattern according to the present invention comprises forming a metal composite by joining a plurality of elongated bodies made of metal materials having different color tones along one another. It is characterized in that the metal composite is twisted and subjected to plastic working to form an inclined pattern oblique to the axis on the surface of the metal composite.

[0007]

According to the method of manufacturing a metal article having a tilted pattern of the present invention, since it is only necessary to join the elongated members of the number which forms the tilted pattern, a large number of strip materials corresponding to the number of tilts as in the conventional case. Since it is not necessary to join, the joining time is extremely short. Further, since the metal composite thus joined is twisted and plastically worked to form an inclined pattern on the surface, unlike the conventional method of cutting into a predetermined shape, the yield is improved. It can be dramatically improved and is extremely effective as a mass production method.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method for manufacturing a metal article having an inclined pattern according to an embodiment of the present invention will be described below with reference to FIG.

First, as shown in FIG. 1A, a metal material having a different color tone (for example, 18K gold alloy with a red color tone (75%) is used.
Au-25% Cu) and 18K alloy (75% with white color tone)
Au-20% Pd-5% Ag) or a yellow-colored 18K alloy (75% Au-20% Ag-5% Cu, more than weight%)) strips 10 and 11 are laid along each other and pressed together. The metal composites 12 are formed by bonding them to each other by diffusion bonding or the like.

Next, as shown in FIG. 1B, both ends of the metal composite 12 are held by chucks 13 and 14, and one chuck 14 is rotated to apply a torque to the metal composite 12. Let it work. Then, as shown in FIG. 1C, the metal composite 12 is plastically deformed and the elongated bodies 10 and 11 are twisted to form a twisted pattern on the surface.

Next, since the surface of the obtained slanted metal composite 12 is spirally uneven, if cutting or grinding is applied to flatten the surface, the surface of FIG.
As shown in (d), there is obtained a strip-shaped body 15 having an inclined pattern inclined with respect to the axis on the surface. The band-shaped body 15 thus obtained is formed into a ring shape and brazed to form a metal article such as a ring.

According to the present embodiment, it is only necessary to join two elongated bodies having different color tones forming an inclined pattern, and there is no need to join a large number of strips corresponding to the number of times of inclination as in the conventional case. The joining time is extremely short, which is extremely practical.

Further, the metal composite 1 joined in this way
Since 2 is twisted and subjected to plastic working to form an inclined pattern, unlike the conventional method of obliquely cutting a plate material to which many strips are joined, very little material is discarded. , The yield can be dramatically improved. Therefore, the method for manufacturing a metal article having an inclined pattern according to this embodiment is extremely effective as a method for mass-producing the metal article.

The elongated body 10 constituting the metal composite 12 is a yellowish 18K gold alloy (75% A).
u-12.5% Ag-12.5% Cu or 75% Au-
20% Ag-5% Cu), red-based 18K alloy (75%
-5% Ag-25% Cu), a yellowish 14K gold alloy (58.5Au-36.5% Ag-5% Cu), and the like can be used.

Further, as the elongated body 11 constituting the metal composite 12, platinum, platinum alloy, nickel alloy, stainless steel, titanium steel alloy, etc. can be used.

[0016]

As described above, according to the method for producing a metal article having a slanted pattern of the present invention, a plurality of elongated bodies made of metal materials having different color tones are joined along each other and joined together. To form a slanting pattern oblique to the axis on the surface of the metal composite by twisting the metal composite and subjecting the metal composite to plastic working. Unlike the case where the long objects that form the inclined pattern are joined together, the joining time is extremely short, and the yield can be dramatically improved unlike the case where the predetermined shape is formed by cutting. It is possible and extremely effective as a mass production method.

[Brief description of drawings]

FIG. 1 is a process drawing showing a method for manufacturing a metal article according to an embodiment of the present invention.

FIG. 2 is a perspective view showing an example of a conventional metal article having an inclined pattern.

FIG. 3 is a diagram showing a method of manufacturing the metal article of FIG.

[Explanation of symbols]

 10, 11 Long body 12 Metal composite 13, 14 Chuck 15 Band material (metal article)

Claims (1)

[Claims] 1. A metal composite formed by joining a plurality of elongated bodies made of metal materials having different color tones along each other to form a metal composite, and twisting the metal composite to subject it to plastic working. A method for producing a metal article having an inclined pattern, comprising forming an inclined pattern oblique to an axis on a surface of the metal article.