JPS599188A - Combined decorative and exterior parts - Google Patents

Abstract

PURPOSE:To produce combined decorative and exterior part having an excellent color tone, metallic feel, corrosion resistance and durability by applying noble metal plating of a black color on a base material applied with under-finish plating with a noble metal then polishing locally the same to remove the same. CONSTITUTION:Root part plating 2 of an Ni-Pd alloy or the like is electrodeposited to 6mu thickness on a base material metal 1 for exterior part for spectacle frames, watches, etc. Rh plating or Au plating of white noble metals is formed at 0.5-2mu thickness as an under-finish plating 3 and further Rh-Pd plating as plating 4 of a black noble metal is formed at 0.5mu thickness thereon. Finally, the plating is removed locally by buffing or manual polishing to expose the plating 3 having a beautiful color tone.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a decorative exterior part, such as an eyeglass frame, which is finished with a precious metal and has an elegant, fuzzy appearance, with excellent corrosion resistance and durability.

Glass frames, exterior parts for watches, and the like are always required to be not only functional but also decorative and corrosion resistant.

Conventional decorative exterior parts such as eyeglass frames and watch exterior parts are made of brass, nickel silver, monel, nickel alloy,
Some products are used that have a base material of nickel-chromium alloy Yasudenless, etc., and are plated with a white precious metal or gold-based precious metal to improve aesthetic appearance and corrosion resistance. However, in such a noble metal finish, the colors of the decorative exterior parts are almost limited to a single color of gold, white, and black.

In addition, other conventional decorative exterior parts include those made by sulfurizing silver to give it a silver tone, but the silver itself has the disadvantage of progressing to sulfurization, and in order to compensate for this defect and ensure quality, painting is required. It is necessary to use them together.

The present invention was made in view of the above-mentioned problems, and its purpose is to provide a luxurious appearance that combines an excellent appearance with an elegant color tone, a metallic feel, corrosion resistance, and durability, which has not been possible until now. Our objective is to provide decorative exterior parts.

In order to achieve the above object, the present invention applies black precious metal plating at a rate of 0.05/l on a base material which has been subjected to white noble metal plating or golden noble metal plating as upper rod plating.
~ 2μ is deposited, and the black precious metal plating is locally removed by puff polishing, manual polishing, or rail polishing, etc.
By exposing the top finish plating, a texture of oxidized silver or oxidized gold is obtained.

An embodiment of the present invention will be described below with reference to FIG.

In FIG. 1, reference numeral 1 indicates a base material for eyeglass frames, etc., which is made of a nickel-chromium alloy or the like. 2 is a base plate made of nickel-palladium alloy (palladium 65
% including j). 3 is the top plating, which is a white noble metal. 4 is black precious metal plating, which is a rhodium-palladium alloy (containing 90% ronlamum).

Next, to explain the function of the decorative exterior part with such a structure, a 6/1 nickel-palladium alloy of the base plate 2 is electrodeposited on the base material 1 made of nickel-chromium alloy etc. by wet plating, Further, 0.5μ of black precious metal plating 4 was electrodeposited, and then 5μ of black precious metal plating 4 was deposited, and the black precious metal plating 4 was locally deposited on the hub. Remove it by polishing or hand polishing to expose the upper part of the lower rod 3.

In addition, the above-mentioned lower plating 3 is hard and may be thinner, and the above-mentioned black precious metal plating 4 cannot be visually distinguished as black if it is less than 0.05 μm, and if it is more than 2 μm, it will be costly. Furthermore, the black film becomes difficult to peel off by local polishing or the like.

As mentioned above, according to one embodiment of the present invention,
Rojiuno, -Hara/ on the base material with electrodeposited flash plating
The rhodium-palladium is deposited locally.
・As the rhodium is partially exposed by being removed by polishing or hand polishing, it has a luxurious feel that is completely different from the ibushi silver finish that is used in conjunction with conventional painting. This has the effect of making it possible to create 48 decorative and decorative exterior parts.

Indeed, even if ammonia sulfide aeration is carried out for 2/1 hour, there is no abnormality, and it is effective in obtaining high surface monophagy.

Another embodiment of the present invention will be described based on FIG. 2. In FIG. 2, reference numeral 5 indicates a base material of an eyeglass frame, etc., which is made of stainless steel or the like. 6 is the base plating, which is a nickel-palladium alloy (contains 80% Halafram).

7 is the top finish plating, which is gold plating. 8 is black precious metal plating, and rhodium black plating.

Next, to explain the function of the decorative exterior part with such a structure, a base material 5 made of stainless steel or the like is coated with nickel-palladium alloy of 2 to 6 kg at the base by wet plating.
Electrodeposit /, and then add 0.5 to 2 pieces of lower rod top plate 7
After that, 0.3 micron of rhodium black plating of the black precious metal plating 8 is deposited, and the black noble metal plating 8 is locally removed by polishing or the like to expose the top finish plating 7.

It should be noted that if the black precious metal plating 8 is less than 0.05 /J, it cannot be visually identified as black, and if the thickness exceeds 2/Z, the cost will be high, and furthermore, if the black precious metal plating 8 is locally polished by barrel polishing, etc. There is an inconvenience that it becomes difficult to remove the film.

As described above, according to another embodiment of the present invention, rhodium black plating is deposited on a gold-plated base material, and the rhodium black plating is locally removed by barrel polishing, etc., so that the gold plating is partially performed. In order to expose
It is possible to obtain decorative and decorative exterior parts that have an elegant appearance and a high-class feel like hardened gold, and yet have high corrosion resistance that does not cause any abnormalities even after being subjected to ammonia sulfide aeration for 24 hours. This has the effect of making it possible to obtain exterior parts.

Therefore, as described above, according to the decorative exterior part of the present invention, black pre-metal plating is applied to the base material which has been top-plated with white noble metal plating or golden noble metal plating. 2tt precipitates, and further the black A
When the metal plating is locally removed by puff polishing, hand polishing, barrel polishing, etc., the white precious metal plating or gold precious metal plating of F finish plating is partially exposed, making it a precious metal with excellent compatibility. This has the significant effect of providing an exterior part that also serves as a decoration and has an elegant finished appearance.

[Brief explanation of the drawing]

Fig. 1 is a partial cross-sectional view of one embodiment of the present invention showing a state in which mengi silkworms have been applied to the base material, and Fig. 2 is a partial cross-sectional view of another embodiment showing a state in which plating has been applied to the base material of the present invention. It is a sectional view. 1.5...Material 2,6...Base plating 3,7.
...Finish plating 4,8...Black nobleman Meggi city license applicant Toko Co., Ltd. representative patent attorney Kanakura 1 To two corners 1- saliva 2-

Claims (1)

[Claims] J 0.0% black precious metal plating is applied on the base material which has been plated with white precious metal plating or gold precious metal plating on the lower rod.
05 μm to 2 μm of plating is deposited, and the black precious metal coating is locally removed by puff polishing, manual polishing, barrel polishing, etc., to expose the plating on the lower rod.