JPH09229570A - Sintering method of flat plate shape ceramics, and sintering rack set - Google Patents

Abstract

PROBLEM TO BE SOLVED: To ensure the good sintering fuel cost without deformation of ceramics, and improve the efficiency of loading of ceramics. SOLUTION: Reception bricks 4 are stacked in a multistage on a car top of 21 sintering truck 1 at a predetermined interval, and a plurality of beam materials 6 comprising a material excellent in high temperature strength such as Si-SiC are laid into a multistage between the reception bricks 4, 4 at each stage, and further a flat plate shaped ceramics W such as flat plate bricks and flat plate shaped tiles are placed horizontally on the beam materials 6 and are calcined.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of firing flat plate ceramics such as flat tiles and flat tiles, and a firing rack used for the method.

[0002]

2. Description of the Related Art Conventionally, an H-shaped bowl with an H-shaped cross section as shown in FIG.
Was used. This H-shaped bowl 20 is one in which flat plate ceramics W to be fired are placed horizontally and stacked in multiple stages as shown in FIG. 6 and fired. In order to receive the flat plate ceramics W on a horizontal surface, firing is performed. There is an advantage that deformation of is prevented.

However, since the H-shaped bowl 20 is heavy,
There is a problem that fuel efficiency during firing is poor. Specifically, the weight of one plate-shaped ceramic W is 3.5 to 3.6 kg, whereas the weight of one H-shaped bowl 20 is about 5 kg, and most of the heat quantity of the firing furnace is It will be used to heat the H-shaped bowl 20. In addition, since the H-shaped bowl 20 and the flat plate-shaped ceramic W are in close contact with each other in a plane, the back surface of the flat plate-shaped ceramic W cannot directly contact with the high temperature gas in the furnace, which deteriorates the firing efficiency. There is also.

In addition to the above, the present applicant has also developed a method of supporting a large number of flat plate-shaped ceramics W obliquely at regular intervals and baking them. Also, since it is difficult to stack in multiple stages on the car top of a trolley for firing, there remains a problem in terms of kiln packing efficiency.

[0005]

DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned problems of the prior art, has a good burning fuel efficiency, is not deformed during firing, and has a high kiln packing efficiency. It was designed to provide shelving.

[0006]

In order to solve the above-mentioned problems, a method of firing a flat plate-shaped ceramic according to the present invention comprises a flat plate-shaped ceramic on a plurality of beam members supported by bricks at both ends. Is stacked flatly, and these are stacked in multiple stages and fired. In addition, the firing shelf set of the flat plate-shaped ceramics of the present invention made to solve the above-mentioned problem is to stack the receiving bricks of a certain height at predetermined intervals on the car top of the firing truck in multiple stages. At the same time, a plurality of beam members are laid in multiple stages between the receiving bricks of these stages so that each beam is horizontal. The beam material is preferably made of Si-SiC.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below. FIG. 1 is a front view of a baking shelf of the present invention, FIG. 2 is a side view, and FIG. 3 is an enlarged view of a main part. In these figures, 1
Is a trolley for firing, 2 is a large number of shelf legs standing upright on the car top of the trolley for firing at a predetermined interval, and 3 is a receiving rod horizontally placed on these shelf legs 2, 2. . All of these are made of heat resistant materials such as SiC and mullite.

Reference numeral 4 is a receiving brick having a constant height, and in this example, as shown in FIG. 4, through-holes 5 are provided at a constant pitch in a vertical wall of the U-shaped section. This receiving brick 4 is also made of a heat resistant material such as SiC or mullite.
The receiving bricks 4 are arranged in multiple stages on the receiving rod 3 (in the example shown in FIG.
(Tier) Stacked. Then, by supporting both ends of the beam member 6 in the through holes 5 of the receiving bricks 4 in each stage, a plurality of beam members 6 are erected in multiple stages so that each beam unit is horizontal to form a shelf assembly. ing.

The beam member 6 has, for example, a length of 1.5 to 1.8.
It is necessary that it is square and has a cross section of 20 × 20 mm, and that it will not be deformed even if a plurality of flat plate-shaped ceramics W are horizontally placed on it and fired at 1000 to 1200 ° C. For example, Si-SiC can be used as the material having excellent high temperature strength. This Si-SiC consists of SiC and 25% by weight or less of Si. It can be manufactured by a method in which Si powder and C powder are mixed with SiC powder, extruded, and sintered at 1300 to 1400 ° C. it can. In addition, it is also possible to prepare a compact by using C and then react with Si to obtain Si-SiC. In addition, it can be manufactured by a method of impregnating recrystallized SiC with Si. Details of this Si-SiC are disclosed in Japanese Patent Laid-Open No. 6-1660 of the present applicant.

The beam material 6 made of such Si-SiC is
Each piece weighs about 1.5 kg and has a bending strength of 25 kg / mm ² , and the strength thereof hardly decreases even when heated to 1000 to 1200 ° C. On the other hand, the conventionally known bending strength of SiC is 3 even at room temperature.
~ 5kg / mm ² , mullite is only 1 ~ 1.2kg / mm ² .

In the present invention, as shown in FIG. 5, flat plate ceramics W are horizontally placed on these beam members 6 and stacked in multiple stages for firing. In FIG. 5, three beam members 6
The plate-shaped ceramic W is supported by the two beam members 6
May be supported by. When the flat plate ceramic W is a flat tile of 350 × 350 mm, in order to support it with the two beam members 6, the two beam members 6 should hit the position of 50 to 100 mm from the end of the flat tile. It is preferable to keep.

If the firing is performed in this way, the weight of the beam material 6 per piece of the plate-shaped ceramic W can be reduced to 1.5 kg or less, so that the firing is performed as compared with the case where the conventional H-shaped bowl is used. It is possible to greatly improve the fuel efficiency at the time. Further, since the flat-plate porcelain W can be supported horizontally and fired, the deformation during firing can be eliminated as compared with the case of standing upright, and since the multi-stage firing is possible, the kiln packing efficiency is also improved. In the illustrated example, five layers are stacked, but seven to eight layers can be stacked.

In addition to the above, the plate-shaped ceramic W is
Since the beam material 6 of the book is supported and fired, the high-temperature gas in the furnace also comes into direct contact with the back surface of the flat plate-shaped ceramic W, and excellent firing efficiency can be obtained.

[0014]

As described above, according to the present invention, it is possible to fire a flat plate ceramic such as a flat tile or a flat tile without causing deformation during firing. Moreover, it has many advantages such as good fuel economy and firing efficiency, and improved kiln packing efficiency.

[Brief description of drawings]

FIG. 1 is a front view of a baking shelf of the present invention.

FIG. 2 is a side view of the baking shelf of the present invention.

FIG. 3 is an enlarged view of a main part.

FIG. 4 is a perspective view of a receiving brick.

FIG. 5 is a plan view of a main part.

FIG. 6 is a front view of a conventional H-shaped bowl.

[Explanation of symbols]

1 trolley for firing, 2 shelf legs, 3 receiving rods, 4 receiving bricks, 5 through holes, 6 beam materials, 20 H-shaped bowls, W flat plate ceramics

Claims (3)

[Claims] 1. A method for firing a flat plate-shaped ceramics, comprising flatly stacking flat-shaped ceramics on a plurality of beam members supported at both ends and supported by bricks, and stacking these in multiple stages and baking them. 2. A plurality of beam members are provided between the receiving bricks of each stage while stacking the receiving bricks of a certain height in multiple stages on the car top of the truck for firing at predetermined intervals. A shelf for firing flat ceramics, which is characterized by being installed in multiple stages so that each of them is horizontal. 3. The baking shelves for flat plate ceramics according to claim 2, wherein the beam material is made of Si—SiC.