JPH0680257B2 - Enamel panel for building materials - Google Patents

Description

TECHNICAL FIELD The present invention relates to a enamel panel for building materials used as an interior / exterior material of a building.

(Prior Art) Recently, enamel panels, which have been enameled on the surface of metal panels, have come to be widely used as interior and exterior materials for buildings. This enamel panel has the advantage that the enamel layer on the surface is highly durable and there is little deterioration of color tone and gloss fading, but since the color is monotonous, enamel panel with a variety of design changes Is desired.

Therefore, attempts have heretofore been made to make the enamel layer matte or metallic, but there are many problems. For example, as a method of matting the enamel layer, use a Si
The method in which a difficult-to-melt substance such as O ₂ is put in and stopped by semi-melting during firing has problems that the range of firing conditions is very narrow, uneven adhesion is likely to occur, and acid resistance is low. In addition, the method of producing a large number of wrinkles on the surface of the enamel layer by applying a glaze and drying or baking it is troublesome and the appearance is not uniform. In addition, the method of applying a glaze in which a myriad of fine gas bubbles are generated is inferior in the impact strength of the enamel and is not uniform in appearance. Further, the method of treating the calcined surface of the enamel with a chemical agent has a problem in that in the case of colored glaze, the color changes to white and the desired color cannot be obtained.

As a method for making the enamel layer metallic, for example, there is a method in which crushed pieces such as vermiculite are mixed in a fritt and baked by glaze.However, in this method, the crushed pieces have a clear color tone due to oxidation or melting. I can't get it. Money again
The painting method using cloisonne enamel mixed with powder of silver or the like is expensive, and there is a problem that the base glaze is lead-based and toxic, and oxidizing metal powder cannot be used.

(Problems to be Solved by the Invention) The present invention solves the above-mentioned conventional problems, and an object thereof is to provide a enamel panel for a building material having an excellent appearance with durability.

(Means for Solving Problems) The enamel panel for building materials according to the present invention is characterized in that the enamel layer is provided on the surface of the metal panel, and the thermal spray layer of the metal material is provided on the enamel layer. Enamel panel for building materials.

In the present invention, as the metal panel, various metal plates such as an iron plate, a steel plate, a stainless plate, and an aluminum plate formed into a shallow box shape or a curved plate shape can be used.

Further, the enamel layer in the present invention has a desired thickness, which is obtained by coating and firing various general enamel frits by an ordinary method.
It can be formed as an enamel layer having color, strength and corrosion resistance.

In the present invention, the metallic material is a general term for various metals and alloys. For example, as the metal material, at least one of aluminum, copper, titanium, alloys thereof, stainless steel, and the like can be used.

Further, in the present invention, during the thermal spraying for forming the thermal sprayed layer of the metallic material, the total amount of the metallic material may be in a molten state, or a part of the metallic material may be mixed as a solid in another molten material.

(Operation) In the enamel panel for building materials of the present invention, the enamel layer on the surface of the metal panel protects the metal panel as a dense and hard coating layer, and excellent corrosion resistance is obtained. The enamel layer also acts as a thermal buffer layer or a reinforcing layer that prevents thermal distortion of the metal panel due to thermal spraying when the thermal spray layer of the metallic material is formed.

In addition, the thermal spray layer of the metal material provided on the enamel layer produces a color and luster according to each material type while the metal or alloy used is solidified by thermal spraying, and a coating layer with various appearances rich in change is formed. Form.

Since the sprayed layer of this metallic material is formed by spraying,
It is easy to provide a sprayed layer of uniform thickness and uniformity,
An enamel panel is obtained which has a uniform and even appearance.

(Examples) The present invention will be described in detail below with reference to examples. The dimensions of the metal panel are indicated by width × length × thickness (folding depth of the side wall of the box-shaped body), and all are external dimensions.

(A) First Embodiment As shown in FIGS. 1 and 2, a decarburized steel plate for enamel having a thickness of 1.6 mm was bent into a shallow box shape of 1050 × 2150 × 45 mm, and the front surface side of the metal panel 1 was used. On the back side, brown enamel layers 2 and 3 each having a thickness of 200 μm were provided by a conventional method.
Next, masking is applied in a grid pattern on the enamel layer 2 on the panel surface side with a width of 50 mm gum tape, and 8% AI-Cu alloy is sprayed on it with an arc sprayer to form a sprayed layer 4 with a thickness of about 20 μm. Provided. The sprayed layer 4 has a clear golden color, and a beautiful pattern is formed by the brown lattice-shaped portions of the enamel layer 2 after peeling the gum tape and a large number of golden rectangular shaped portions of the sprayed layer 4. The enameled panel 5 for building materials for exterior was obtained.

(B) Second Example A basil-like enamel layer having a thickness of 60 μm is provided by a conventional method on the surface side of a metal panel obtained by bending an aluminized steel sheet having a thickness of 0.8 mm into a shallow box shape of 850 × 1600 × 30 mm. Then, aluminum having a purity of 99% or more was sprayed on this by an oxyacetylene flame to provide a sprayed layer having a thickness of 5 μm. As a result, a enamel panel for exterior building materials having a clear silver-white metallic luster due to the sprayed layer on the entire surface side was obtained.

(C) Third Embodiment A SUS-430 stainless steel plate having a plate thickness of 1.2 mm is 885 × 885 × 30 mm.
On the surface side of the metal panel bent into a shallow box shape, a black enamel layer with a black glaze of 150 μm thickness is provided by a conventional method,
Copper having a purity of 99% or more was sprayed on this by a plasma spraying machine to form a sprayed layer having a thickness of 10 μm. This sprayed layer had a copper-colored metallic luster, and a enamel panel for exterior building materials having a beautiful appearance was obtained.

(D) Fourth embodiment An ivory enamel layer having a thickness of 50 μm is formed on the entire surface of a metal panel formed by bending an aluminized steel sheet having a thickness of 0.5 mm into a shallow box shape of 885 × 1785 × 15 mm by a conventional method. , Titanium and SUS304 stainless steel were separately sprayed on this by plasma spraying machine, and a spray pattern of flower pattern was provided, then 500 ℃
Heated for 5 minutes. As a result, the titanium sprayed part that forms the contour of the flower pattern shows a metallic blue color, the stainless steel sprayed part inside the contour shows a light brown color, and the interior design enamel panel for interior materials has a unique design as a whole. Was obtained.

(Effect of the invention) As described above, the enamel panel for building materials of the present invention has excellent durability due to the enamel layer, and also has a sprayed layer of a metallic material rich in change in appearance having a metallic color and a metallic luster, A enamel panel for building materials having an excellent appearance with various colors and glosses can be obtained by forming it on the entire surface of the enamel layer or in a pattern. Further, since it suffices to spray the metal material on the enamel layer, the panel manufacturing process is simple and the manufacturing cost is low. The enameled layer also covers the metal panel to improve its durability and also acts as a thermal buffer layer or a reinforcing layer to prevent thermal strain of the metal panel during thermal spraying of the metal material, so it is excellent in thermal strain due to thermal spraying. An enamel panel for building materials having excellent appearance and durability can be obtained.

[Brief description of drawings]

FIG. 1 is a perspective view of a building material panel showing an embodiment of the present invention, and FIG. 2 is a partially enlarged sectional view of the same. DESCRIPTION OF SYMBOLS 1 ... Metal panel, 2 ... Enamel layer, 4 ... Thermal sprayed layer, 5 ... Enamel panel for building materials.

Claims (5)

[Claims] 1. A enamel panel for a building material, wherein a enamel layer is provided on the surface of a metal panel, and a sprayed layer of a metal material is provided on the enamel layer. 2. A enamel panel for building materials according to claim 1, wherein the metallic material is at least one selected from the group consisting of aluminum, copper, and alloys thereof. 3. The enamel panel for building materials according to claim 1, wherein the metallic material is at least one selected from titanium and titanium alloys. 4. The enamel panel for building materials according to claim 1, wherein the metal material is stainless steel. 5. The enamel panel for building materials according to claim 1, 2, 3 or 4, wherein the sprayed layer has a pattern formed on the enamel layer.