JPH02133582A - Decoration techniques for metal surfaces - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION A. Field of Industrial Application The present invention forms an inlaid decoration on a metal surface by a simple means. Concerning decoration techniques for metal surfaces.

Conventional technology Metal surfaces can be decorated by partially coloring or plating, or by carving a raised pattern and then inserting different metals into the recesses, a technique called quadrant. be. However, the former, which are colored and plated, are monotonous and unattractive, and have little artistic value, while the latter's techniques such as mixing and inlaying are all done by hand, so even though they have high artistic value. Productivity is poor, so in the past, as a way to easily form inlaid decorations, for example, Japanese Patent Application Laid-Open No. 51
As described in Japanese Patent Laid-open No. 144350, a raised pattern reaching the lower layer is formed on a dissimilar metal stacked stone board by corrosive means, and as described in Japanese Patent Application Laid-open No. 55-94481, a glaze is applied into the raised pattern. Techniques have been proposed in which the metal body is filled and fired, and then the surface of the metal body is deleted or, as described in JP-A-55-97999, a depression is formed by press working and a pattern piece is buried in the depression. has been done.

C. Problems to be Solved by the Invention In all of the above conventional techniques, recesses must be formed on the metal surface, so if corrosive means are used, handling and management of the corrosive treatment solution is troublesome, and press processing is required. A press machine is required to do this, and cutting waste is discharged after cutting.

2. Means for Solving the Problems The present invention makes it possible to easily form a pattern between inlays without forming recesses or using different types of composition, and its structure allows a desired metal surface to be formed. By polishing to reveal a shiny background, applying a pattern with a transparent inorganic pigment with low melting frit, and firing it in an oxidizing atmosphere, the pattern is burnt onto the surface of the gold scrap, and the pattern is It leaves only the printed part as a shiny background and changes color in the other parts, and uses transfer technology or printing technology as a means of applying the pattern.

E. The patterned part of the working metal surface is formed by melting the transparent inorganic pigment of the low-melting frit that forms the pattern during the firing process.
Because it is covered with a glass coating, oxidation is prevented and the surface remains shiny, while other parts that are not covered with the glass coating undergo oxidative discoloration in an oxidizing atmosphere.

EXAMPLE Next, an example will be described in which the gold scrap surface decoration technique according to the present invention is applied to a stainless steel nameplate.

The drawings show the decoration technique of the present invention in order. 1 is a stainless steel nameplate whose surface has been polished to a mirror finish until a glossy background is exposed, and 2 is a mount 3 with a water-soluble adhesive applied to one side. A peony pattern 4 is created using a paint containing a transparent low melting frit inorganic pigment with a melting point of 550'C mixed in a dispersion medium.
It is a transfer paper printed with , and when this transfer paper 2 is immersed in water,
The peony pattern transfer body 5 is separated into a film. The transfer body 5 separated into a film is transferred and adhered to the surface of the stainless steel name plate 1, and is sufficiently dried.

Mukai rt! 4 has a large coefficient of thermal expansion, so the coefficient of thermal expansion of the low melting frit used in the paint is (7,7~II) at 700°C when the object is stainless steel.
6/℃ < 100°C, and the inorganic pigment used is a well-known pigment for glass, stainless steel, and ceramics, and the dispersion medium contains polymethacrylic acid ester and an aromatic and ester solvent in a ratio of about 4 to 6. A mixture of proportions was used.

Next, this is fired in a firing furnace in an oxidizing atmosphere from room temperature to 600°C at a rate of increase of 10'C per minute. Then, the transferred paint of the peony pattern 4 is melted and a transparent glass peony pattern 4' is printed onto the stainless steel name plate 1.

As a result, the area covered with the glass film is protected in the high-temperature oxidizing atmosphere and remains as a glossy surface. On the other hand, the other parts that are not covered with the glass coating undergo oxidative discoloration in a high-temperature oxidizing atmosphere, and an inter-inlaid pattern with a silver peony pattern 4' covered with the glass coating is formed in the blackish discoloration. Ru.

Since this example uses a transfer means to apply the pattern, it is possible to easily create the same pattern that is delicate and faithful to the original drawing in every detail, and is suitable for mass production, as well as for objects with curved surfaces such as molded objects and vases. It can be adapted even on three-dimensional surfaces.

In the above description, a peony pattern is applied using one sheet of transfer paper as an example, but a continuous pattern other than the peony pattern can also be formed using a plurality of sheets of transfer paper.

It is also possible to add color to the transparent paint to create a stained glass look.

It should be noted that instead of the transfer means, it is also possible to employ printing means such as screen printing which directly applies the pattern to the metal surface, and a modified example thereof will be described next.

First, in the same way as in the above example, the surface of the stainless steel nameplate 1 is finished to a mirror finish, a silk screen printing plate 6 is placed thereon, and a transparent low-melting frit inorganic pigment with a melting point of 550° C. is dispersed using a squeegee 7. A geometric pattern 8 is directly printed on the surface of the stainless steel nameplate 1 using paint mixed with a medium and fixed.

Since the subsequent steps are the same as those in the previous embodiment, detailed explanation will be omitted here.

It should be noted that metals other than stainless steel may be used for patterning, and the types and proportions of the low-melting frit, inorganic pigment, and dispersion medium used, as well as the firing temperature,
The time and the like can be changed as appropriate within the range in which the above-mentioned objects and effects of the present invention can be achieved.

Effects According to the present invention, the pattern force applied to the metal surface during the firing process in an oxidizing atmosphere! It remains as a glossy surface coated with glass, and the other parts are colored by 5 degrees of oxidation, dividing the same type of metal into a background part and a discolored part, and the discolored part makes the shiny part stand out, so it forms a raised surface. Inlaid patterns can be easily formed without the need for cutting or cutting processes. Furthermore, by using transfer means and means for directly printing on metal surfaces, productivity can be improved and uniform products can be stably supplied.

[Brief explanation of the drawing]

Figure 1 a ''-' c is an explanatory diagram showing the process of the decoration technique according to the present invention, Figure 2 is an explanatory diagram of the finished product, and Figures 3 a and b are explanatory diagrams showing another process. 1.・Stainless steel nameplate, 2. Transfer paper, 3. Mounting paper,
4.4'...peony pattern, 5...transfer body, 6...printing plate,
7. Squeegee 8. Pattern, Patent applicant Kubota Iron Works Co., Ltd. Japan-China Transfer Co., Ltd. Figure 1 (C')

Claims (1)

[Scope of Claims] 1. A desired metal surface is polished to reveal a shiny background, a pattern of a transparent inorganic pigment with a low melting frit is applied thereto by a transfer means, and the pattern is fired in an oxidizing atmosphere. A metal surface decoration technique characterized in that a pattern is printed on the metal surface, and only the part where the pattern is printed remains as a shiny background, while the other parts are discolored. 2. Polishing the desired metal surface to reveal a shiny background, applying a pattern by directly printing a low-melting frit transparent inorganic pigment thereon, and firing it in an oxidizing atmosphere to improve the metal surface. A metal surface decoration technique that involves printing a pattern onto the surface of the metal, leaving only the areas where the pattern is printed as a shiny surface, and changing the color of the other areas.