JPH04107253A - Method for facing surface of wall material for construction use - Google Patents

Abstract

PURPOSE:To change the color tone of a facing while obviating the necessity of the application of refacing to a metallic sprayed deposit by nearly simultaneously thermally spraying plural metals, each having a color tone changing with the lapse of time and also having a different color tone at least for the prescribed period, on the surface of a wall material for construction use. CONSTITUTION:A heat resisting mortar layer is formed on the surface of concrete as wall material for construction use. Subsequently, metal is thermally sprayed on this heat resisting mortar layer by using a thermal spray gun to form a metallic sprayed deposit layer consisting of the above metal. At the time of the above thermal spraying, plural metals are simultaneously sprayed. As these plural metals, a combination selected from the combinations of metals, each having a color tone changing with the lapse of time and also having a different color tone at least for the prescribed time, is used. For example, three metals of zinc, stainless steel, and copper are thermally sprayed simultaneously. By this method. a change in the color tone of the whole facing with the lapse of time can be brought about without refacing, and a new atmosphere can be produced.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for decorating the surface of an architectural wall material using a metal sprayed coating.

(Background of the Invention) There have been various methods for finishing the exterior or interior of architectural wall materials, but in recent years, metal spraying on the surface of architectural wall materials has been used, for example, as disclosed in Japanese Patent Application Laid-open No. 117264/1983. There is a method of forming a film to give the surface a metallic luster.

In this way, by creating a metallic glossy surface with a metallic sprayed coating, it is possible to apply a beautiful makeup with a profound feeling.

However, in the conventional decorative method for architectural wall materials using metal sprayed coatings, since the metal sprayed coatings are formed integrally with the architectural wall materials, color tone changes and gloss on the surface of the metal sprayed coatings occur over time. When deterioration occurs, it becomes extremely difficult to redo makeup.

In other words, in such cosmetic refurbishment, the old metal sprayed coating is removed uniformly over the entire surface, and a metal sprayed coating is applied again on top of the peeled off coating. This is extremely time-consuming and impractical in practice.

In addition, in order to solve this problem, for example,
It has been proposed to thermally spray a ceramic spray material onto a decorative board to form a decorative surface that does not discolor for a long period of time, as shown in Japanese Patent No. 65751.

However, human tastes change day by day, and it is desirable to change the color tone of the decorative surface of architectural wall materials. Therefore, even if the improved invention described above is used to form a cosmetic surface that does not discolor for a long period of time, it will still be necessary to reapply the makeup after a certain period of time has passed, and the above-mentioned complexity of reapplying the makeup cannot be solved.

In addition, in the conventional change in color tone due to deterioration, the change is monotonous and does not occur if it satisfies changes in human taste.

In view of such conventional problems, the present invention provides a decorative method for architectural wall materials that can change the color tone of a decorative surface without redoing the metal spray coating, and in which the change in color tone is not monotonous. The purpose is to

(Means for Solving the Problems) In order to achieve the above object, the present invention applies a plurality of metals whose color tone changes over time and has different color tones for at least a certain period of time to the surface of an architectural wall material almost simultaneously. A metal spray coating was formed by thermal spraying, and this metal spray coating was used as a decorative surface.

(Function) In the decorative method for architectural wall materials of the present invention with the above configuration, the metal spray coating formed on the surface of the architectural wall materials is
Since multiple metals are sprayed almost simultaneously, the surface is turbid with various metals. Therefore, if the initial color is different for each metal, the decorative surface will be mottled with different tones.

Since each metal changes color independently over time, the color tone of the entire decorative surface changes over time in an unexpected manner, creating a completely new atmosphere without having to redo the makeup.

In other words, the color changes may occur at the same time or at the same time, or one may change color first and the other later, resulting in large changes in color tone.

Also, since each metal has a different color for at least a certain period of time, for example, by making the entire decorative surface have the same color for a period of time, it is possible to erase the pattern or make the pattern stand out. It can also be used in a variety of ways, making it very versatile.

(Example) Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

First, as shown in FIG. 1, a heat-resistant mortar layer 12 is formed on the surface of concrete 10, which is a building wall material, as a base treatment for forming the metal spray coating of this embodiment.

The mortar used for this heat-resistant mortar layer 12 uses alumina cement as its main component, and chamotte and chamotte as aggregates mixed into it.
Corundum and bauxite were used, and the water-cement ratio was 35%.

Further, instead of the heat-resistant mortar layer 12, a heat-resistant inorganic primer or the like may be used.

By providing a heat-resistant material as a base treatment in this way, concrete 10 is protected from the high temperatures generated during metal spraying.
It is designed to protect the surface, prevent thermal deterioration, and improve the adhesion of the thermal spray coating in the subsequent process, but it is not necessarily necessary to provide it in the present invention.

Next, as shown in FIG. 2, metal is sprayed onto the heat-resistant mortar layer 12 using a spray gun 14 to form a metal spray coating layer 16 of this metal.

In this thermal spraying process, the powder particles to be thermally sprayed by the thermal spraying gun 14 are heated by flame to a molten state, and this is fixed to the surface of the heat-resistant mortar layer 12, thereby forming a decorative surface. It is formed.

Here, in the present invention, multiple types of metals are simultaneously injected during the thermal spraying. These metals are selected from a combination of metals whose color tone changes over time and whose color tone differs for at least a certain period of time, and in this example, zinc is used.

Three types, stainless steel and copper, are sprayed at the same time. As a result, the surface of the formed metal spray coating layer 16 is in a state in which the three metals are turbid.

On the other hand, the color changes of these three metals over time are shown in the table below.

As is clear from the above table, when the metal spray coating layer 16 is initially formed, zinc and stainless steel are the same color (silver), and only copper is a different color (red copper), so the surface is silver and red copper. The color becomes mottled. The mottled pattern is reddish copper in the areas where copper has been applied.

Next, after X years have passed since the film was formed, stainless steel does not change color, but zinc turns gray and copper turns brown, so the surface color of the architectural wall material becomes mottled in three colors, which is different from the original color. A completely new color tone with a different pattern and hue is created.

Furthermore, after Y years, stainless steel will change color to gray (same color as zinc), and copper will also change color to green, so the pattern and hue will change compared to every X years, and the pattern will remain the same compared to the beginning. The color of things becomes unpredictable and completely different.

This makes it possible to change the color tone of the entire makeup surface over time and create a new atmosphere without having to touch up the makeup.

Note that the above-described combinations of metals are merely examples, and the present invention is not limited thereto, and various combinations can be used. In other words, for example, if a combination of zinc and stainless steel is used, the decorative surface will initially be silver and have no pattern, but after X years, only the zinc will change color and the pattern will stand out. It will be very variable. Furthermore, as a combination of metals, it is of course possible to use any other metals without selecting from the above three types, and it goes without saying that the number of combinations may be two or four or more. do not have.

(Effects of the Invention) As explained above, in the decorative method for the surface of architectural wall materials of the present invention, the color tone changes over time and a plurality of metals having different color tones are applied to the architectural wall material for at least a certain period of time. The material is thermally sprayed almost simultaneously onto the surface of the material to form a metal sprayed coating, and this metal sprayed coating is used as a decorative surface, so various metals are applied to the decorative surface in a turbid state, and each metal changes color independently. .

As a result, a decorative surface with a wide variety of color tones can be formed without having to re-make up the bimetal sprayed coating.

[Brief explanation of the drawing]

FIGS. 1 and 2 are explanatory diagrams showing the method for decorating the surface of architectural wall materials in order according to the present invention. Figure 1 Figure 2 10... Concrete (architectural wall material) 16...
...Metal sprayed coating layer patent applicant Obayashi Co., Ltd. representative
People Patent Attorney - Kensuke Iro Patent Attorney Masatoshi Matsumoto

Claims (1)

[Claims] A plurality of metals that change color over time and have different color tones for at least a certain period of time are sprayed almost simultaneously onto the surface of architectural wall materials to form a metal spray coating, and this metal spray coating is used as a decorative surface. A decorative method for the surface of architectural wall materials, characterized by: