JPS5947374A - Manufacture of decoration - Google Patents

Abstract

PURPOSE:To obtain a decoration retaining its appearance and color tone similar to those of a sintered hard alloy and having superior wear resistance, hardness and corrosion resistance, by forming thin Cr plating on a Cu alloy material worked to the required surface and shape before carrying out ionic plating. CONSTITUTION:A Cu alloy material such as brass is worked to a shape necessary for a decoration, and the required faces of the worked product are made specular. Cr plating of about 5mum thickness is then formed while retaining the edge between the specular faces, and the Cr plating is plated with Ti or a Ti alloy. Thus, a decoration which resembles a sintered hard alloy in appearance and has superior wear resistance, hardness, etc. is obtd.

Description

[Detailed Description of the Invention] The present invention is applicable to wristwatches, bracelets, poetry bands, desk items,
The manufacturing method for ornaments such as proboscises and other accessories.

Conventional ornaments, 1lf Vl arms, etc.
1: Excellent hardness, Jψ abrasion resistance, and good gloss due to the surface roughening of the surface (7). There are products made of so-called cemented carbide made by powder metallurgy.However, these cemented carbide products have a high commercial value, but have low impact resistance, poor damage, and
This was a critical drawback to mass production and caused high costs.

Therefore, the present invention uses a copper-based alloy that has good workability and is inexpensive, while having the same appearance and color tone as the above-mentioned cemented carbide products or υ parts. Another object of the present invention is to provide a method for manufacturing a decorative article that is far superior in hardness, corrosion resistance, and surface wear to 1° compared to conventional copper-based alloy plating.

Hereinafter, preferred embodiments of the present invention will be described.

Copper-based alloys, which have good workability and are comparatively cheap, are used as the base material for decorative items, but brass materials, which are commonly used for watches, watches, etc., are used as base materials for decorative items. This brass material is suitable for use in decorative items due to its low cost, good workability and plating properties, and its ability to withstand the processing temperature of ion fretting. Processed into the required shape in Step 12, the publicly funded surface of the workpiece is mirror-finished using die V-cut processing.This mirror-finishing process creates sharp edges on the ridge lines between the mirror-finished surface and the other. It is easy to make a mirror-like robe.

After that, use the V-trowel of the polishing machine to lightly polish the sheave V-button of the ridge line and the mirror-like 1t, being careful not to scratch them.
A cleaning device is used to degrease using a solvent and remove slag generated during sanding.

The molded product described in -1-1 is Vt-plated, but this plating is done by devising the activation of the pre-treatment.
This is to improve the plating strength and prevent blistering of the plating layer T, which is caused by the image plate binder treatment described later, and a general ROM plating was used17. Also, the total thickness of the glossy layer T should be increased by at least 5
It is about tt, and is thinner than general chrome plating. For example, copper strike plating 2 is 0.2~
It is preferable that the gauze 19 of this chrome plating layer T be 5μ44.1 degrees within the range of 0.3μ, 35μ or more for nickel plating 3, and 0.2 IIσ for chrono plating 4. Therefore, if −(, this culm + ifσ) plating layer T, then
The plating is too thick on the ridge lines of the molded product, and the ridge lines look sharp.

After this chromium plating treatment, pretreatment cleaning is performed and ion brating treatment is performed, but this ion grating treatment does not cause any adverse thermal effects to the negative steel material that is the matrix of the molded product, and In order to obtain sufficient dust-free property of the routing layer, 1) it is necessary to set the filtration temperature IW, and a film S is formed on the plating layer T by this ion blating treatment. .

The TI layer 5, which serves as a foothold for obtaining layered properties, is formed on the TI layer 5 (=i L, and the Ti layer 5 is added to provide corrosion resistance, hardness, and strength.
Apply a N6 layer, and then add TiN + TIC7 on top of this TiN6 layer to finally obtain a decorative color tone.
A q is added. Therefore, by this color tone adjustment, it is possible to produce a color tone similar to that exhibited by conventional cemented carbide.

As a result of the treatment described above, the plating layer T is interposed between the hard titanium layer coating S formed by the ion blating treatment and the relatively soft matrix 1. gradually hardens, the density between each layer is 2n, wear resistance, etc.! In addition to the above-mentioned ion blating treatment, when ion plating treatment is performed directly on the base material, the above-mentioned blistering occurs due to the generation of gas from the base material, resulting in poor appearance. As it deteriorates, problems such as low fz of corrosion resistance, hardness, and wear resistance occur, but these problems can be solved by applying chrome plating with -1-5 self-adhesiveness.

In the notes example, a color tone close to gold can be obtained by applying titanium or ditanium base metal ruding, but it can be limited to a gold color by appropriately selecting the ion plating metal. You can get a wide range of tones.

In this way, it has the appearance characteristics of conventional cemented carbide, such as a good mirror finish and the ability to express the sharpness of the ridge lines, but also has the characteristics of hardness, tetracorrosion, and abrasion resistance. It is much more reliable than conventional copper-based alloys such as chrome, gloss, and gold plating, and the product price is also higher4.

According to the method for manufacturing ornaments of the present invention, mirror finishing is applied to the necessary parts of the Jl, ridge and copper base 7, and after forming it into a publicly expended shape using one piece of equipment, I-1,. -1-0 is applied (but it has a relatively thin plating process that does not destroy the ridge line between the surface and the surface, so it is easy to work and is made of a cheap copper-based alloy. In particular, VC can be easily molded into any shape without changing the shape of the molded product, and the hardness, corrosion resistance, and abrasion resistance of the coating after 9JL burial are excellent. By applying it to the machined surface of 1υ, it can be applied neatly and neatly, giving it the same luxurious appearance and color tone as conventional cemented carbide products or parts. thicker than the plating [
1) It is possible to provide decorative products with excellent corrosion resistance and wear resistance at low cost.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing one embodiment of the present invention, and FIG. 2 e;
It is an explanatory diagram showing the process of the same example. 1.-copper) ((alloy phase, T fist/plating layer, 5..io/
Coating with Fredinog. l (¥11 Adventurer 〆1\11) Doyu Co., Ltd. Figure 1 Figure 2-36;

Claims (1)

[Claims] 1. After mirror-finishing the necessary surfaces of the copper-based alloy material and forming it into the desired shape as a decorative item, the pre-ML metal surface treatment is applied.
7. A method for manufacturing an ornament by applying a relatively thin plating process that does not disturb the ridge lines between the base and the surface, and then applying an ion blasting process. 2. Claim 1 in which the copper base metal material is brass
Method for manufacturing ornaments listed in Section KL. 3. Claim 1, wherein the plating treatment is chrome plating, and the total thickness of the plating layer is approximately 5 μm at most.
2. A method for manufacturing a decorative article according to paragraph 2 or paragraph 2. 4. Titanium or titanium alloy grating was applied as the ion brating treatment! hf permission
. . . A method for manufacturing a decorative article according to item 1, item 2, or item 3.