JPS5953669A - Colored hard case for timepiece - Google Patents

Abstract

PURPOSE:To obtain a superhard case having a variety of colors, by depositing a colored metal on the surface of a case worked in ceramics and by subjecting the case to statically isotropic high temp. and high pressure treatment. CONSTITUTION:>=1 Kind of colored metal or alloy such as Au, Ag, Cu, Al or Ni is deposited on the surface of a case worked in ceramics such as the oxide or nitride of Al, Ti, Zr or Si 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 relates to a yellow hard case for hourly reservations which has novel decorative properties. At the outset, a colored metal is formed on the surface of a case previously processed with ceramics, and then subjected to static isotropic temperature and heavy pressure treatment to diffuse the colored metal inside and create a new material. This invention relates to a colored hard case for a watch, which is characterized by the appearance of a color tone.

The object of the present invention is to provide a hard case fK that has a novel color area that cannot be obtained with conventional ceramics.

Another object of the present invention is an isotropic sieve? +'ii'+・By applying room pressure treatment -1-, the shape Jl! is formed on the surface! By diffusing the colored metals inside the material and simultaneously removing internal defects in the ceramic base material, we have improved the mechanical strength, especially the transverse rupture strength, which is the weak point of ceramics. .

Now 1 "Exterior parts movement 1n] &;t, practical case,
悌; At the same time as respecting elongation, it also has the value of decoration. 1. It is extremely strong, and as for the case, other than conventional stainless steel, brass, and plastic, cemented carbide or ceramics are attracting attention. There is.

These machines are machined using cemented carbide and ceramics, making the most of its ultra-hard 7R properties to create a sharp surface. It has been made into 19 products with the selling point of maintaining it semi-permanently.

However, the conventional case has a decorative effect, /f'! r&
From a color constraint perspective, there are no single colors! There are many LJ items, and the colors? J, 'a, ceramics with a certain degree of dust freedom have weak mechanical strength and cannot be put to practical use, so there are few products that can satisfy all the demands of consumers.

On the other hand, when it comes to ceramics, Toshino 1 is the best material. Partly because of this, plating has hardly been developed, especially surface treatment techniques aimed at decoration.

Furthermore, ceramics are manufactured and crushed using a powder metallurgy method, and are subject to limitations in terms of manufacturing method, material characteristics, and design shape, which also weakens the decorative effect.

SUMMARY OF THE INVENTION The purpose of the present invention is to eliminate the problems and drawbacks of the two-type semi-socket case, and to provide a colored hard 1ij alloy case that is rich in the cup-perfume desired by consumers. It was developed in 1997.

The feature of the present invention is that it is based on a conventional ceramic case, and that colored metal is formed on the entire surface or in any pattern and is diffused under high pressure. I (I can't resist the metallic exterior)
There is a ceramic case with 14 pieces, and an additional 7 pieces! II: - The mechanical strength is one level lower than l'+v, which densifies the ceramic itself under high pressure.

In addition, fine ceramics, which have been attracting attention recently,
The device according to the present invention! It was finally used as a case for watches, and it became popular as a case for watches.

Next, details of the ceramics, n-wrapping metal spool 1, and diffusion method used in the present invention will be described.

First, the ceramics referred to in the present invention and (1') - aluminum, beryllium, magnesium, thorium, titanium, silicon, C, zirconium, etc.
MoL< refers to oxides and nitrides formed from two or more kinds. Among them, oxides and nitrides of aluminum, titanium, zirconium, silicon, etc. are common and practical.

Next, regarding colored metals in the present invention, gold,
Although mainly composed of blue metals such as silver, intermediate elements of bow elements, and alloys thereof, brocade, aluminum, nickel, etc.') Single H1 metal elements and their alloys 11'i are also effective.

The forming method may be selected depending on the purpose and quality, such as wet plating such as electroless plating or electrolytic plating, or dry plating such as vacuum evaporation, sputtering, or ion blating, or thermal spraying or dipping. The method is not limited.

Next, the static intellectual high temperature/high pressure processing technology used in the present invention will be described. First, as a pressure sand body, liquid or gas is used to apply non-directional pressure, but V gas is effective when used at high temperatures.Inert gases such as uAr and N2 gas are effective as gases. It is desirable that the pressure is 100 KYf/1yn2 or more, preferably 1000 Kff/rrn2 or more. Regarding the temperature, the formation was observed on the base and surface 41
Desirably below the melting point of the colored metal or below the &:i eutectic point,
Diffusion time varies depending on the quality of the colored metal, film thickness, diffusion number, etc., but it ranges from several minutes to several 11 F? The amount of time is appropriate based on both economical and quality considerations.

The present invention will be explained in detail below with reference to Examples.

Example-1 1i hj ratio, titanium 9ide 5 parts, molybdenum 0.5%
.

1% nickel + 1% magnesium chloride, the rest is r1 aluminum chloride! :l i? N+ on the surface of the case processed with alumina ceramics that grows for 1 yen! e
``i; + nickel plating 'rO05μ applied, that''
Second, gold-nisokel, indium alloy plating t3
It force 1'q'''t-0 Then, the case was inserted into a high-pressure container, and Ar gas was applied at 700Kf/f/cm''K.
: Add it until it's done! if'1. ? ! ,,! ,
l! lc is 1.0 (10℃.

When the pressure reaches 160 o Kyh can 2, it is held for 2 hours, and when the temperature falls below 200°C, the Ar gas is removed and the case is taken out. In this way, high temperature and high pressure treatment is performed using Mti L, Table m-1 shows the
The gold alloy is internally diffused and has a beautiful lustrous gold, and the surface hardness is also reduced to I(υ).
It has a golden hard case with a hardness of over 1000, which is comparable to the basic Sewo mix. The case is made of ceramics V, which has been formed into a desired pattern with gun plating and Ni-diffusion treatment.The case is made of two colors of gold and white, making it a case with a new decorative property. lr-.

In addition, plating on ceramics is difficult, and even if it can be plated, the properties are seriously poor, ii 11
'ni peeling 1. However, as in the present invention, by diffusing it inside, it becomes integrated with the base IJ and can be used for one time without any problems.

When the case was immersed in synthetic sweat and seawater and tested on a 1lliJ model, it met the specifications without any problems.In addition, the mechanical strength was
By treating the high-pressure part, the inside of the ceramic becomes denser, which is about 20% higher than that of base A.

Example-2 Heavy JIt staff: f1 silicone sail 5%, 1゛1 iron oxide 0
．． Section 3.

0.6% titanium oxide, 2% hafnium monochloride, balance #) Example on the surface of the case processed with zirconium 21-t mix made from zirconium oxide.
Same as 1) VT nickel plating with 0°5 TT pattern plating and then gold-copper alloy plating on top? ,'lt
Then, the plating case is inserted into a high-pressure container, and Ar gas is introduced to 700°/Qm' to add mud. n111 degrees is 1100 degrees Celsius, pressure is 1700 Kff
/, rm” and held for 1.511δ l-
Perform isotropic temperature and high pressure treatment, and when the temperature drops 1...1' below 200℃, remove the Ar gas and take out the case. The color is pinkish gold, and the diffusion is 7.
1. However, the 1.1 base color is white, making it a highly decorative product that has never existed before.

Regarding the quality, Example 1.m-JIIIJ strain had no problematic characteristics in its history.

In addition to what has been described in the embodiments above, the present invention is applicable to each of the previous 17B and 41
This is my father's case, which was made with JJ+ in 11 Sewomics.
.

By forming the colored gold 1.fl described above in an arbitrary manner and diffusing it in a statically isotropic high temperature downstream,
Do you want an ultra-hard case with rich color buffing that cannot be done with conventional 4J? ! I/) small has been made into -i1 function, and we have succeeded in providing a case that meets consumer demands.

Claims (1)

[Claims] Colored metal 1 is applied to the surface of the case processed with Sewomix.
Fiff or two or more types are formed (1), and then the case is subjected to static isotropic high temperature and high pressure treatment (4).
(i') A colored hard case for a watch, characterized in that the colored metal is diffused inside.