JP3076647B2 - Method for manufacturing enamel wallboard - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing an enameled wall plate suitable for use as a ceiling wall or a side wall.

[0002]

2. Description of the Related Art As a conventional enameled wall plate, for example, JP-B-62-61503 and JP-B-62-61504.
2. Description of the Related Art There is known an elevator car side wall described in Japanese Patent Application Publication No. Sho 62-60354. As shown in FIG. 3, these were formed by enamel wall plates 1 which were coated with a glaze 1c on a base metal plate 1b, dried and fired at a temperature of 750 ° C. to 850 ° C. to enamel the surface.

[0003]

[0006] However the conventional enameled steel wall panel described above, there are difficulties in terms of stiffness, resulting in relatively easily deformed when such a <br/> collide luggage. In this regard, for example, in the case of a car side wall made of a steel plate, a mountain-shaped reinforcing plate 1a is fixed to the back surface of the side wall as shown in FIG. So that it is not easily deformed. Therefore, this kind of reinforcing plate 1
It is conceivable to reinforce the above-described enamel wall plate 1 by a, but the enamel wall plate 1 is warped and a part thereof is discolored. That is, when the reinforcing plate 1a is fixed to the back surface of the base metal 1b as shown in FIG. 4, and the glaze 1c is applied to the surface of the base metal plate 1b and fired, warpage occurs as shown in the figure.

[0004] This is because firing distortion occurs between the base metal plate 1b and the glaze 1c due to the difference in the coefficient of thermal expansion between them, while firing distortion does not occur in the reinforcing plate 1a itself. central portion is anti Riga generated deformed into the reinforcing plate 1a direction enamel made wallboard 1 as shown in FIG. Further, the enameled wall plate 1 is discolored in the region B where the reinforcing plate 1a shown in FIG. 4 is fixed from the back surface because the cooling rate is different from the other portions. For this reason, it has not been possible to obtain an enameled wall plate having sufficient strength.

An object of the present invention is to provide a method for producing a hollow enameled wall plate which has sufficient strength while preventing warpage and discoloration.

[0006]

According to the present invention, in order to achieve the above object , a glaze is applied to the surface of a base metal plate and fired.
In the method for manufacturing an enameled wall plate, the surface of the fired enameled wall plate is placed on a table.
Then, a reinforcing plate is placed on the back surface with an adhesive, and the reinforcing plate is subjected to the above-mentioned reinforcement while applying pressure to correct thermal deformation during firing.
Thereby bonding the plate and the enamel steel wall plate, the element
The ground metal plate has a thickness of 1.2 to 1.6 mm.
The pressure for correcting thermal deformation during firing is 150 to 200 kg /
characterized in that the m ^2.

[0007]

Since the method for manufacturing the enameled wall plate according to the present invention is as described above, the base metal having a thickness of 1.2 to 1.6 mm is used.
A reinforcing plate provided on the back surface of the enamel manufactured wallboard made by firing by applying a glaze to the surface of the genus plate, since it is bonded to the enamel steel wall plate after firing, by the reinforcing plate as in the conventional connexion The enameled wallboard does not warp, and there is no region with a different cooling rate during the firing process, so that no discolored portion is generated on the enameled wallboard. Also for reinforcing plate
Since the bonding with the enamel wall plate is performed while applying a pressure of 150 to 200 Kg / m ² , the thermal deformation during firing can be corrected at the same time.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a flowchart showing a manufacturing process of an enameled wall plate according to an embodiment of the present invention.

First, as in step 10, the plate thickness is 1.2 to 1.6.
After subjecting both ends of the base metal plate 1b to bending in the same direction, an enamel glaze 1c is applied to the entire outer surface of the base metal plate 1b. Next step 11
Then, after confirming that the glaze 1c has dried, it is fired in a furnace at a temperature of 750 ° C. to 850 ° C. to form the enamel wallboard 1.

After the enameled wall plate 1 has been cooled to room temperature, it is placed on a flat table 2 so that the surface of the enameled wall plate 1 is in contact with the plate, and a reinforcing plate 1e such as a calcium silicate plate or the like is mounted on the back surface, as in step 12. Is placed via an adhesive. The reinforcing plate 1e at this time has a dimension L from the end of the enameled wall plate 1.
It is assumed that they have widths that are only apart from each other. Further, uniformly PKg to reinforcing plate 1e as shown as the time step 13 /
While applying a pressure of m ^2, the reinforcing plate 1 e is
Adhere to.

Next, the dimension L in the process 12 and the process 13
Will be described. Generally, since a plurality of enameled wallboards 1 are connected and used for the ceiling wall and the side wall, an upright part formed by bending both sides of the enameled wallboard 1 is required. Used for purposes such as business. Considering the workability in that case, L =
It is desirable to set it to 25 mm or more. However, in this embodiment, it is supplemented that the pressure P is applied to the reinforcing plate 1e by limiting the range to 25 mm <L <35 mm. That is, as the pressure When the P, where the base metal plate 1b and ^1.2～1.6Mm, was divide can be removed together with the adhesive thermal deformation during firing if a ^{150Kg / m 2 ~200Kg / m 2} . The pressure P is such that the base metal used is 1.2 to 1.
By using a thin plate having a thickness of 6 mm, thermal deformation can be eliminated as defined above. On the other hand, when the dimension L is larger than the above-described value or the pressure P is larger than the above-described value, it is understood that the enamel wall plate 1 at the portion facing the reinforcing plate 1e is protruded in the direction of the pressure P. Was. Therefore, the thickness, the dimension L, and the pressure P of the base metal plate are preferably specified as described above.

As described above, since the reinforcing plate 1e is bonded to the back surface of the enameled wall plate 1 after the enameled wall plate 1 is fired, discoloration does not occur due to warpage during firing and a difference in cooling rate. In addition, since the reinforcing plate 1e provided on the back surface has sufficient rigidity, it is possible to prevent a load or the like from being deformed or damaged by hitting. The reinforcing plate 1e
As a result, a calcium silicate plate containing no asbestos is used, so that it does not deteriorate the air environment of the building and has a soundproofing effect of blocking noise such as mechanical noise outside the car. However, as the reinforcing plate 1e, for example, an aluminum oxide plate Can also be used.

[0014]

As described above, according to the present invention, the reinforcing plate is bonded to the back surface of the fired enameled wall plate, and at the time of this bonding, the reinforcing plate is attached to the reinforcing plate at 150 to 200 kg / m ^2.
Because you apply pressure of the plate thickness is 1.2 to 1.6
The rigidity can be increased without causing warpage or discoloration of the enamel wall plate made by baking a glaze on the surface of a base metal plate of mm. Can be bonded.

[Brief description of the drawings]

FIG. 1 is a flowchart showing a manufacturing process of an enamel wallboard according to an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view showing a configuration of a conventional enameled wall plate.

FIG. 3 is a longitudinal sectional view of an enamel wall plate according to an embodiment of the present invention.

FIG. 4 is a longitudinal sectional view showing occurrence of warpage when a reinforcing plate is attached to the enameled wall plate shown in FIG. 3;

[Explanation of symbols]

Reference Signs List 1 enamel plate 1a reinforcement plate 1b base metal plate 1c glaze 2 table L size P pressure

Continuation of front page (72) Inventor Hiroshi Goko 1-6-6 Kandanishikicho, Chiyoda-ku, Tokyo Within Hitachi Building System Service Co., Ltd.

Claims (2)

(57) [Claims] 1. A method for manufacturing an enameled wall plate by applying a glaze to the surface of a base metal plate and firing the same, wherein the surface of the fired enameled wall plate is placed on a table and an adhesive is applied to the back surface. through the reinforcing plate arranged, with bonding the above reinforcing plate and the enamel steel wall plate while applying a pressure to correct the thermal deformation during <br/> firing the reinforcing plate, the base metal plate thickness 1.2 to 1.6mm
The pressure for correcting the thermal deformation during the firing is 150 to 20.
Method for producing enameled steel wall panel, characterized in that the 0 kg / m ^2. 2. The device according to claim 1 , wherein the base metal plate and the enameled wall plate are formed with bent upright portions on both sides thereof, and a dimension from the upright portion to the reinforcing plate is 25. A method for manufacturing an enameled wall plate, wherein the thickness is set to 35 mm.