JPS5830517B2 - Tile casing firing method and bottom balls used for the method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tile burning commandment method and a bottom ball used for carrying out the method, and provides an effective and convenient method for firing tiles that shrink during firing into an accurate shape. It is something.

The conventional tile firing method employs a method in which a large number of tiles are packed into a sagger pot, either directly or with a fireproof coating, and then the sagger pot is fired in a kiln.

According to this method, when a large number of tiles are stood-fired, a defect called drumstick, where the dimensions of the top and bottom sides of the manufactured tiles are different, often occurs. is shrinking more greatly.

In the present invention, the inner bottom of the c-tama sagger pot is lined with bottom balls made of a fire-resistant arbitrary material to prevent the difference in dimensional shrinkage between the top and bottom sides of the manufactured tiles. The sole ball alleviates the automatic sliding resistance of the lower side during tile firing.

Furthermore, the present invention is very effective as a method for firing curved tiles, and by using the present invention, it was possible to fire the upper and lower curved angles of curved tiles with great accuracy.

In other words, the gist of the ``tile firing method'' according to the present invention is that ``a bottom ball made of any fire-resistant material is laid in a sagger pot, a large number of tiles are packed on top of the bottom ball, and then the sagger is heated. The method is characterized in that the pots are fired in a kiln, and is particularly effective in the vertical shaft method of tiles, although this is not intended to be limiting.

The appropriate size for the bottom ball is a spherical body of about 1 mmφ to 5r/L1rLφ.If it is smaller than this, there will be workability problems such as difficulty in laying a flat bottom, and even if the refractory material is fine powder. , reacts with the tiles during the firing process,
There is a high risk that the bottom of the tile will undergo kiln discoloration and discoloration.
It is also inferior in terms of dimensional effects.

If the diameter is larger than about 5 mm, it becomes difficult to fill the sagger with tiles horizontally.

Conventionally, as a method to solve this problem, it is a publicly available technique to lay a base material with the same composition as the tile on the bottom of the sagger, but in this case, it was necessary to throw away the base material laid on the bottom of the sagger. .

In the present invention, there is no need to discard the sole ball, and this step has been successfully omitted.

These sole balls are usually placed on the inner bottom of the sagger pot in only one layer, and when they are packed tightly, there is enough space for the bottom balls to move as the tiles shrink during firing, but according to experiments. Good results could be obtained even if two or more layers were laid in the sagger.

The material of the bottom ball is the same as that of the sagger, such as alumina, mullite, or cordierite, or more preferably, the material is denser than the material of the sagger.

In other words, the gist of the bottom ball is that it is used only for the method of laying a large number of tiles on top of a sagger and firing them in a kiln. It is made by firing spherical bodies that have been rounded by a method such as the following:

Embodiments of the present invention will be described below by taking the idiom Shokaiho of melody as an example, but it goes without saying that the present invention is not limited to the following embodiments.

The purpose of this practice is to perform stand-fire kiln firing of curved objects and other angular objects by placing fire-resistant bottom balls inside the saggers, mainly on the bottom of the curved objects (the surface in contact with the saggers).
The main purpose is to accurately bake the angle of the upper surface (space surface) and the upper surface (space surface), and to enable the used sole ball to be used repeatedly semi-permanently.

As a result of conducting firing tests in the format shown in Figures 1 and 2 using alumina or mullite base balls with a certain size in the range of 1 mm to 5 mm, it was found that the balls were not affected by the weight of the tiles themselves. The resistance at the base has been alleviated, the angle between the top and bottom sides of the bends has been made more accurate, and the dimensional accuracy has also been improved.

The effects of using the sole ball in this example will be described below.

■ If balls are used as the sole, there is no need for tools such as bricks or conkers to accurately align the angles, and the number of tiles per cart can be more than tripled, reducing kiln firing losses and work efficiency. Loss can be eliminated.

■ Since it is possible to build a vertical shaft, it becomes possible to pack items with various shapes and angles into the same sagger pot without using the tools mentioned above.

■ Since uniform spherical balls are placed on the bottom, the bottom can be made flat by simple vibration.

■ Since the ball is refractory, it can be used repeatedly and the work process can be simplified.

■ The number of saggers in a pot increases, and the difference in heat capacity with other products such as dried fish tile carts becomes smaller, so the difference in kiln firing color between dried fish tiles and dried fish tiles becomes smaller.

[Brief explanation of the drawing]

The illogical state of the present invention will be explained and illustrated in FIGS. 1 and 2, which show an example of a state in which a illogical phrase is slang. A...Curved tiles, B...Saggers,
C... Sole ball.

Claims (1)

[Scope of Claims] 1. A sagger is laid with a bottom ball made of any fire-resistant material, a large number of tiles are packed on top of the bottom ball, and then the sagger is fired in a kiln. Secret firing method for tiles. 2. The method for firing tiles according to claim 1, which is characterized by a large number of tiles. 3. The method for firing tiles according to claim 1 or 2, wherein the diameter of the bottom ball is about 1 mm to 5 shoulders. 4. The method for firing tiles according to any one of claims 1 to 3, in which the sole balls are laid in one or two tiers. 5. The method for firing tiles according to any one of claims 1 to 4, wherein the material of the bottom ball is selected from the group of alumina, murai l-, cordierite, etc. 6. The method for firing tiles with hidden words as set forth in claim 1, in which the twisted tiles are used as hidden words as illustrated. 7. A spheroid made of any fire-resistant material, rounded by a granulator, etc., and then fired, and the size of the spherical bodies is almost uniform, and is laid out in a sagger. A bottom bowl used only for the method of packing a large number of tiles on top and firing them in a kiln.