JPS5953670A - Colored hard alloy case for timepiece - Google Patents

Abstract

PURPOSE:To obtain a superhard case having a variety of colors, by depositing a film of a colored metal on the surface of a case worked in hard alloy contg. carbide or nitride as the principal component and by subjecting the case to statically isotropic high-temp. and high pressure treatment. CONSTITUTION:>=1 Kind of colored metal or alloy is deposited on the surface of a case worked in hard alloy contg. the carbide or nitride of Ti, Zr, Hf or V as the principal component by wet or dry plating, spraying or other method. The case is put in a pressure vessel, and by introducing an inert gas such as Ar or N2, the case is subjected to statically isotropic high-temp. and high-pressure treatment at >=1,000 deg.C under <=1,000kgf/cm<2> pressure. By the treatment, the colored metal is diffused in the case.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides novel apparatus features;
1) It is a replacement for the colored hard alloy case for RQL. Now 1 right J+, &, 1: , Pre-hard IJ
↓Processed with alloy and colored gold on the surface of the case) RF4? i:
Formation ('J'-'i), then static isotropic commercial temperature, high pressure treatment by all hflll υ, MfJ color scheme 1
When the color is diffused into the metal part and is characterized by a new color tone, 1 hair 1 for N1 color hard 7'j alloy resource.
1.

An object of the present invention is to provide a hard alloy case that has a new color tone that cannot be achieved with conventional hard gold.

Another object of the present invention is to form on the surface by applying Ql, high-isotropy γAA + high pressure treatment flj:]'-j:
This is where colored metals are diffused inside.

Conventionally, cases machined using hard metals (hard metaA), typically carbides such as WC, TiC, TO, and C, have a sharp mirror surface that takes full advantage of the ultra-hard properties of hard metals. The selling point of this product is that it maintains gloss in a semi-aqueous manner.

However, with the conventional hard Q alloy case,
From the viewpoint of physical effects, especially color tone, there are only color tones possessed by each carbide and nitride, and the color tones, with the exception of some, are plain and simple. Also, the hard base metal, which has some colored parts, is all one color, and there are no parts where the color tone is changed, and it is impossible to change C1L using the manufacturing method up until now.It was close to JJ Noh.

On the other hand, because hard alloys have excellent material properties, surface treatment techniques such as plating, and surface treatment techniques aimed at decoration, have hardly been developed.

In addition, the hard alloy case is manufactured using a powder metallurgy method. Due to its nature, there are limitations in terms of design and shape, which is also a factor that weakens the decorative effect.

In order to eliminate the problems and drawbacks of the upper H1 hard alloy case, the present invention also provides a color buffing eddy that is desired by consumers.
It was developed with the aim of providing a solid color hard alloy case that is rich in color.

The /1' symbol of the present invention differs from the conventional
By using an alloy case as a base and applying colored metal to the entire surface or in an arbitrary pattern, and then spreading it, a colored hard alloy case has a novel device property that cannot be obtained with conventional devices.444 Among other things, internal diffusion of colored metals is carried out using static isotropic high temperature and high pressure treatment.

Next, hard 7q alloy used in the present invention5. A] Ikikin 1・-16
and the details of the diffusion method.

First, the hard materials used in the present invention (1 and e: 1, dithane, zirconium, vanadium, and niobium).

Tantalum, chromium, molyfden, tungsden.

Various carbides and saccharides of actinide metals, among others, carbides of tungsdenum, quantal, etc., and p-77 compounds of titanium and chromium are commonly used.

Next, the 41-color metals referred to in the present invention are mainly composed of Jj gold IV 14-element aggregates such as gold and silver, and their alloys, but also base metal elements such as button (, nickel, aluminum, etc.) and their alloys, etc. Regarding the forming method, which is also effective, there is wet plating such as non-electrified free 11! Menogi, 'IL', J-decomposition plating, or vi6 air vaporization 7?T% sputtering.
Dry plating such as ion brating, thermal spraying,
The method such as immersion may be determined according to the method, and the method is not limited.
J Next, we will describe the static isotropic jj''+;temperature, high pressure treatment i:lj technology used in the present invention.First, we will discuss the pressure and body and the liquid in order to apply pressure without any direction. Alternatively, &;l gas is used, but when used at high temperatures, Vm gas is effective.Gas J + - 1 < ) 1. As fj, i, j:, A r , N, inert gas such as Gas is preferable.The pressure is several hundred degrees or more, preferably 1,000 degrees or more, and 2L or more.The temperature of 414 degrees is below the melting point of the colored metal that has formed on the surface. Alternatively, it is desirable that the diffusion time be below the eutectic point of the hard alloy and the colored metal.The diffusion time varies depending on the film thickness of the colored metal or the expansion number, but it is economical to set it between several tens of tens of minutes and several tens of tens of hours. Judging from both quality and quality aspects, it is appropriate.

The details of the present invention will be explained below with reference to Examples.

Example-1 Tungsten carbide is 84 tungsten carbide for heavy h4, the rest is nickel,
Consisting of cobalt and chromium binder metals, the surface of the case is made of carbide-based hard alloy. Decomposed nickel plating is applied to O05μ, making it a historic "second gold".
Apply 2-371 luindium alloy plating. Place the hind limb case in a high pressure container and fill it with Ar gas'fr.
Add and heat until it reaches 0.00 KF7/z".

The degree to γ1) is 1 (10 (1℃, j force is 1600Ky)
When the temperature reaches 17 cm2, continue to cool the furnace for 2 hours (J' = i). When the temperature drops to below 200°C, the gas is removed. The gold alloy formed on the surface in this way is Expansion 11 will be dealt with.
It has an extremely beautiful golden luster, and has a surface hardness of H7J 1300 or higher, which is UJ-7. lj alloy (
The case is made of a golden hard alloy with a t'l'-shape. In addition, the corrosion resistance of this glue against artificial sweat, seawater, etc. is 7.
When I tested it once, I found that it was no different from a profiteer, and it was durable enough to withstand use. As for the history of secret metal plating, plating itself is difficult, and even if it can be plated, it will easily peel off just by plating, making it unusable. By diffusing it internally as in the present invention, it was possible to use it conveniently without any problems at all, including profiteering. .

In addition, it is possible to apply dimensional plating to the fly hard alloy in any desired pattern, and then apply the above-mentioned enlarged HHy treatment. , completely new with two colors: gold and white: jA
It became a case of ``7Il'lI''.

Example-2 85 pieces of tantalum carbide in Juha-chi, remaining Ni-no-kuru.

Example-1: Case surface processed from carbide-based hard 31 alloy made of 419 binder metals of cobalt and chromium.
Similar to the above, 0.5 μM of nickel plating was applied to the design, and 2 to 3 μM of gold-@111 was applied to the second layer.
Next, insert the plating case into a high-pressure container and heat it by adding Ar gas up to 700 Kff/cm2, at a temperature of 900°C and a pressure of 1500 KJf.
/lyn", hold for 2 hours and apply isotropic high t'+ and surface pressure treatment. When the temperature drops below 200°C, remove the Ar gas and take out the case. In this way, it is completed. The case is gold-copper plated and has a pink color where the copper plating is spread 11.The place where the plating is diffused and the place where there is no plating is a pale pink color, and the case 6 was created from this similar color. It has become a product with an extremely decorative effect that has never been seen before.As for the quality, there were no problematic characteristics such as ``Used in the same manner as actual Mli Example 1''.

In addition, the same plating and diffusion treatment is applied to the J.V golden hard fi alloy case υ, which is mainly composed of titanium nitride, but the colored hard filament case 1, which has two colors of pale pink and golden yellow, is also applied.
We were able to obtain all of the '1 alloy resources.

In addition to what has been described in the examples above, the book 1) may be processed with the various hardness alloys described in 1) 1).
In addition, by forming the colored metal described above by any method (7. Isotropic high-contact 11. (Obtaining a hard IJ↓ case has become nJ's ability, and we have succeeded in providing a case that meets consumers' needs (').

1. The present invention is applicable not only to the case but also to the wristband, etc., and the effect can be further doubled by the total combination of the band and the case.
It is t2.

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Claims (1)

[Claims] A coating of one or more colored metals is formed on the surface of a case made of hard RT alloy (HA, RDNRETA, β) whose main ingredients are one or more of carbides and nitrides. Seshime, scolding bale, 1! By subjecting the case to static isotropic, high-temperature, high-pressure treatment, the above-mentioned (a) watch is characterized by the moon being diffused throughout the interior of the colored metal.
Colored hard alloy case.