JP2001349006A - Green rust roof tile and manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a green rust roof tile having stable quality, excellent durability and a manufacturing method for the roof tile. SOLUTION: This green rust roof tile is characterized by rusting the surface of copper or a copper alloy spread at least on the surface part of a press forming roof tile using cement as main raw material through a metal material layer having melting temperature lower than the melting temperature of copper or copper alloy and excellent weather resistance.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a green rust tile and a method for producing the same.

[0002]

2. Description of the Related Art Generally, green rust tiles are often roofed on the roofs of shrines and temples, the roofs of western houses and mansions. Such a green rust tile is coated with a waterproof material on the roof, and a thick copper plate is attached on the roof and laid or laid, for example, a thin copper plate having a thickness of 0.3 mm is attached, and the copper plate portion is covered with wind and rain. By oxidizing it to generate green rust, or by treating the copper plate portion of the plate material on which the copper plate or thin copper plate is attached with an acidic strongly acidic chemical solution such as hydrochloric acid, nitric acid, or acetic acid. After the green rust is generated, it is roofed. However, it takes time and effort to roof the copper plate or attach the copper plate to the surface of the tile. There was a problem that also becomes. Therefore, prior to the present invention, the present applicant sprays copper particles on the surface of the tile by thermal spraying and attaches the layer to the surface of the tile in a layer to form a layer of copper particles. Similarly, it proposes one that is roofed.

[0003]

In the above-mentioned method in which a copper layer is formed on the surface of a tile by the above-mentioned thermal spraying, which has been proposed by the present applicant, the roof can be roofed in the same manner as a normal tile. Although it can be made, the layer of copper particles formed on the surface part is porous, so the strongly acidic chemical to generate green rust penetrates to the tile side, and the cement is attacked by the strongly acidic chemical However, there is a problem that the durability is reduced because the copper layer is peeled off. In addition, when the alkaline component of the cement dissolves into the soaked chemical solution, etc., and oozes out on the surface, there is also a problem that the generated green rust is reduced or the green rust that has been rusted is spotted. there were.
The present invention has been proposed in view of the above problems, and an object thereof is to provide a green rust tile having stable quality and excellent durability and a method for manufacturing the same.

[0004]

In order to achieve the above object, a green rust tile according to the present invention has a melting temperature lower than the melting temperature of copper or a copper alloy on at least a surface portion of a press-formed tile mainly made of cement. Wherein the surface of copper or copper alloy stretched with a metal material layer excellent in weatherability is rusted. Further, the green rust tile is characterized in that a metal material layer interposed between copper or a copper alloy and at least a surface portion of the press-formed tile is formed by spraying a zinc alloy.

[0005] Next, the method for producing green rust tiles according to the present invention comprises:
A material containing cement as a main raw material is formed into a tile shape by pressing, and this is dried and cured to form a tile. Then, a metal material having a temperature lower than a melting temperature of copper or a copper alloy by spraying at least a surface portion of the tile. After forming the layer, copper or copper alloy is sprayed on the metal material layer to form a surface portion of copper or copper alloy, and the surface portion of the copper or copper alloy is subjected to rusting treatment. Things. One of the features of the method for manufacturing a green rust tile is that the metal material layer is made of a zinc alloy.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a green rust tile and a method for manufacturing the same according to the present invention will be described below with reference to the drawings. FIG.
FIG. 2 is a perspective view of a green rust tile according to the present invention, and FIG. 2 is a partially cutaway sectional view thereof. The green rust tile 1 has a tile body 2 formed by pressing a cement as a main raw material and a copper metal layer 4 provided on the surface thereof with a zinc metal material layer 3 interposed therebetween. Green rust was formed on the surface of the surface.

The method for producing the green rust tile 1 will be described in detail. First, water is kneaded with cement, such as an aggregate such as sand, a moisture regulator such as fly ash, a curing agent such as silica fume, and other predetermined materials. To form a forming raw material. Next, this forming raw material is dewatered by a press forming machine (not shown) equipped with a tile forming die to form a desired tile shape, and this is steam-cured to form a tile base as shown in FIG. Form 2 Here, the curing conditions are, for example, 2400 (degrees.
) Is required for two days (48 hours) in a 50 ° C atmosphere, and is steam-cured in a humid state with a humidity of 90% or more.

In the tile 2 thus formed by steam curing in an atmosphere of 50 degrees for two days, the alkali content of cement is reduced by oxidation or the like during the steam curing. By the way, the alkalinity of the tile 2 after steam curing is pH
Was reduced to 9 or less. Thus, a zinc metal material layer 3 is formed on the surface portion of the steam-cured tile 2. The zinc metal material layer 3 is formed by a known thermal spraying apparatus (not shown). A zinc alloy (for example, an alloy with copper) formed in a linear shape is melted by an arc, and the zinc alloy is atomized by high-pressure air. It is formed in a layered form by spraying and adhering to the surface of the tile substrate 2 in the state as described above.

[0009] Although zinc has excellent physical properties such as acidity and weather resistance, it has weak physical properties against alkalinity. However, as described above, since the alkalinity of the tiles 2 has been reduced during drying and curing, the tiles 2 have a low alkalinity. Has no effect on the zinc metal material layer 3. When the zinc metal material layer 3 is formed by this thermal spraying, the melted zinc alloy fine particles are cooled and solidified on the surrounding surface, but the central portion is blown onto the tile 2 in a soft state while being melted. Therefore, sticking and peeling of the tile substrate 3 whose hardness has been increased by a curing agent such as silica fume can be reliably prevented. Thereafter, as in the case of forming the zinc metal material layer 3 on the surface of the zinc metal material layer 3, the pure copper or copper alloy formed in a linear shape is melted by an arc, and this is atomized by high-pressure air. In this state, a layered copper metal layer 4 is formed by spraying and attaching to the surface of the zinc metal material layer 3.

Here, the particles of pure copper or copper alloy that are melted and fly by the arc are cooled on the surrounding surface and are about to be solidified, but the center portion of the zinc metal material layer 3 is kept in a molten state with high heat. Because it is sprayed on the surface part,
The high heat of the central portion melts or softens the portion of the zinc metal material layer 3 that comes into contact, forms an alloy with pure copper or a copper alloy, and firmly fixes the pure copper or copper alloy particles. At the same time, the gaps around the zinc particles forming the zinc metal material layer 3 are closed by the melted particles of the zinc metal material layer 3, so that rainwater and the like penetrating from the copper metal layer 4 cannot It is surely blocked by the material layer 3 and prevented from reaching the tile substrate 2. When the copper metal layer 4 is formed on the surface as described above, the surface of the copper metal layer 4 is
When treated with a strongly acidic chemical such as hydrochloric acid, green rust is generated on the surface of the copper metal layer 4, and green rust tiles 1 are formed.

In the above embodiment, a copper metal layer is provided on a tile body via a zinc metal material layer.
The invention is not limited to such a material, but any material may be employed as long as it can be sprayed at a melting temperature lower than the melting temperature of the particles of the copper metal layer provided on the surface of the tile. Needless to say, it is desirable to have excellent weatherability. Further, as described above, the surface on which green rust is generated is not limited to the upper surface of the tile, and it is needless to say that green rust can be generated on the entire surface of the tile.

[0012]

According to the present invention, as described above, a material mainly composed of cement is formed into a tile shape by pressing, and the resulting material is subjected to thermal spraying onto a steam-cured tile material by using the melting temperature of copper or copper alloy. After forming a low metal material layer, copper or copper alloy is sprayed on the metal material layer to form a surface portion of copper or copper alloy, and green rust is generated by subjecting the copper or copper alloy surface to rusting treatment Since the melting temperature is high, when the copper particles in the soft state with a high temperature at the center contact the metal material layer with a lower melting temperature, the metal of the metal material layer with the lower melting temperature is removed. Melting or softening is performed to plug the porous portion in the metal material layer having a lower melting temperature. In this way, it is possible to prevent a strong acidic chemical solution or the like as in the related art from penetrating to the base side of the tile and peeling off the copper or copper alloy layer,
There is an advantage that durability can be greatly improved. By the way, a copper plate with a thickness of about 0.3 mm is stuck on the plate,
If the roof is laid, it will be about three to four years due to acid rain.
Although holes have been made in the years, the present invention can surely prevent such a problem and greatly improve its durability. In addition, since chemicals etc. are prevented from penetrating to the base material side of the tile, the alkaline component of cement dissolves into the soaked chemicals etc. It is possible to solve the conventional problem that green rust that has been rusted and rusted is formed into a spotted pattern, and it is possible to provide a green rust tile excellent in durability and stable in quality and a method of manufacturing the same.

[Brief description of the drawings]

FIG. 1 is a perspective view of a green rust tile according to the present invention.

FIG. 2 is a partially cutaway sectional view of a green rust tile according to the present invention.

FIG. 3 is a perspective view of a tile body in a green rust tile manufacturing process according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Green rust tile 2 ... Roof base material 3 ... Metal material layer 4: Copper metal layer

Claims (4)

[Claims] 1. Copper or copper which is stretched on at least a surface portion of a press-formed tile mainly made of cement with a metal material layer excellent in weatherability interposed at a melting temperature lower than that of copper or copper alloy. Green rust tile made by rusting the surface of the alloy. 2. A metal material layer interposed between copper or a copper alloy and at least a surface portion of a press-formed roof tile is formed by spraying a zinc alloy.
Green rust tiles described in 3. A material mainly composed of cement is formed into a tile shape by a press, and this is dried and cured to form a tile body. Next, a metal material layer having a temperature lower than the melting temperature of copper or copper alloy is formed on at least the surface of the tile body by thermal spraying. Thereafter, the metal material layer is sprayed with copper or a copper alloy to form a surface portion of the copper or the copper alloy, and the surface portion of the copper or the copper alloy is subjected to rust treatment. Rust tile manufacturing method. 4. The method according to claim 3, wherein the metal material layer is a zinc alloy.