JP2570396B2 - Method for producing glazed extruded hollow ceramic plate with sealed end face - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a method for producing a glazed extruded hollow ceramic plate having a sealed end face, and more particularly to a glazed end face sealed useful as a building material. The present invention relates to a method for efficiently producing an extruded hollow ceramic plate.

[Prior Art] Conventionally, there has been provided an extruded hollow member 1 having a hollow portion 2 as shown in FIG. 6 manufactured by extrusion molding of a ceramic material such as concrete. Widely used as building materials such as wall materials.

[Problem to be Solved by the Invention] The extruded hollow member 1 is not subjected to any machining or finishing treatment on the cut end surface 3 orthogonal to the extrusion direction X.

For this reason, when the conventional extruded hollow member is used as a building material, it is necessary to cover the joint with a caulking material or a sealing material at the time of construction so that the hollow portion cannot be seen,
There is a disadvantage that the construction work is not easy. Moreover, if the work such as caulking and sealing is incomplete,
There is also a problem that the extruded hollow member is liable to deteriorate due to intrusion of rainwater or the like into the hollow portion.

[Means for Solving the Problems] A method for producing a glaze-extruded hollow ceramic plate having a sealed end face according to the present invention comprises a calcined ceramic extruded hollow member, and a material of the same quality as the extruded hollow member. The extruded hollow member is temporarily bonded to a calcined ceramic sealing member that seals at least the hollow portion of the end surface by melting or spraying the contact portion of the two members, and then glazing and firing to join the two members. It is characterized by doing.

 Hereinafter, the present invention will be described in detail with reference to the drawings.

In the present invention, first, the ceramic material,
An extruded hollow member 1 having a hollow portion 2 as shown in FIG. 6 is extruded, and the extruded product is dried and calcined. For convenience of explanation, in the extruded hollow member shown in FIG. 6, 1a is called an upper plate, 1b is called a lower plate, 1c and 1d are called side plates, and 2a is called a partition plate.

Further, a sealing member capable of sealing the hollow portion 2 of the hollow member 1 is formed, dried, and calcined from a ceramic material having the same quality as the material of the extruded product. The calcination conditions for the hollow member and the sealing member vary depending on the constituent materials thereof, but are usually 10 to 30 at 900 to 1150 ° C.
Minutes.

Next, a sealing member is brought into contact with the opening of the hollow member 1 to seal the hollow portion 2, and the contact portion between the two members is temporarily bonded by heating or spraying. Examples of the heating and melting means include a laser and an electron beam. At this time, in order to increase the strength of the temporary bonding, a frit or the like made of the same material as the ceramic material constituting the hollow member and the sealing member may be applied to the joint portion in advance, and may be heated and melted. Examples of the spraying means include plasma spraying and flame spraying. According to such heat melting or spraying, both members can be temporarily bonded with high efficiency and high strength.

In the present invention, as a method for sealing the hollow portion 2 of the hollow member 1, the following methods (1) to (5) can be adopted.

A plug-shaped member 4 that can be fitted to the hollow portion 2 is fitted into each hollow portion 2 of the extruded hollow member 1 and sealed. (FIG. 1) The end face is sealed using a blind plate 5 that covers the entire end face 3 of the extruded hollow member 1. (FIG. 2) The end surface of the extruded hollow member 1 is processed in advance, and both side plates 1c,
1d and the partition plate 2a are cut to form a fitting margin 1 of the blind plate 6,
The end face is sealed by fitting the blind plate 6. (FIG. 3) The end face of the extruded hollow member 1 is processed in advance, the upper plate 1a, both side plates 1c and 1d, and the partition plate 2a are cut, and the mounting margin m of the blind plate 7 is reduced while leaving only the lower plate 1b. The end face is sealed by placing the blind plate 7 on this portion and temporarily bonding it. (FIG. 4) The end face of the extruded hollow member 1 is pre-processed, the partition plate 2a is cut, a fitting allowance n for the blind plate 8 is formed, the blind plate 8 is fitted and temporarily bonded to seal the end surface. I do. (FIG. 5) Of the above-mentioned methods, the method of (1) is preferable because the processing of the end face is easy, and the blind plate does not easily fall off during the glazing and firing in the subsequent steps. The method for sealing the end surface of the hollow extruded member with the hollow member is not limited to the above-mentioned methods.

After joining the calcined hollow member and the sealing member in this way, after glaze is applied to at least the front surface (upper plate), preferably the front surface and side surfaces (upper plate, side plate, and sealing end surface) of the joined body, Main firing. The glaze may be applied to the entire surface of the joined body. As the glaze used for glazing, glazes for ordinary ceramic materials such as frit glaze and raw glaze can be used.

The main firing conditions of the glaze are appropriately determined according to the type of the ceramic material, the type of the glaze, and the like of the hollow member and the sealing member. In the normal case, the firing condition is a temperature of 1100 to 1200 ° C. for about 10 to 30 minutes.

In the method of the present invention, the ceramic material constituting the hollow member and the sealing member is not particularly limited, and the present invention is applicable to a wide range of ceramic materials such as a sintered ceramic extruded material and a cement extruded material. Can be applied.

In the present invention, the surface to be sealed by the sealing member may be one end surface or both end surfaces of the hollow member.
When sealing both end faces, in the final firing after sealing,
In order to prevent a product defect due to high pressure inside the closed hollow part, one or more air holes communicating with each hollow part are previously formed in the upper plate or lower plate of the hollow member or the sealing member. It is preferable to make a plurality of holes.

[Operation] In the method for manufacturing a glaze-extruded hollow ceramic plate having a sealed end face according to the present invention, the calcined hollow member and the sealing member are temporarily bonded to perform glaze and main firing.

For this reason, an end face sealing hollow member with good dimensional accuracy, such as a sealing portion, can be efficiently manufactured.

That is, after joining the molded product of the hollow member and the sealing member before calcining, calcining, when performing the main baking, it takes time to dry before baking, poor production efficiency, and by baking, In some cases, the dimensions of the sealing portion change slightly, and the state of adhesion of the sealing portion is not sufficient.

On the other hand, when bonding the hollow member and the sealing member after calcination and main calcination, sufficient bonding strength cannot be obtained.

On the other hand, according to the method of the present invention, the calcined hollow member and the calcined sealing member are temporarily bonded, and after the glaze is fired, the dimensional accuracy of the joint between the two members is good, and the joint strength is high and beautiful. It is possible to efficiently produce a product having a glaze surface. In the present invention, in order to temporarily bond the calcined hollow member and the calcined sealing member, a melting or spraying means is employed, so that the temporary bonding can be efficiently performed with a high bonding strength, and a high bonding strength can be obtained. Thus, an end face sealing member sealed with is obtained.

EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples.

Example 1 An end face of an extruded hollow member (material: calcium silicate and clay) 1 previously calcined at 1000 ° C. for 30 minutes and having a shape shown in FIG. 3 is formed as shown in FIG. Was. Next, a calcined product of the same material at 1000 ° C. for 30 minutes and having a shape shown in FIG. 3 was fitted into the fitting margin 1 and irradiated with a CO ₂ laser along the dotted line A in FIG. did. The focus of the laser was on the surface of the hollow member. By laser irradiation,
The portion near the joining surface between the extruded hollow member 1 and the blind plate 6 melts,
The extruded hollow member 1 and the blind plate 6 were temporarily bonded. Next, after polishing the end face, the front face and side face (top plate, side plate and sealing end face)
And baked at 1150 ° C for 30 minutes. The glaze used was SK 04a glaze.

As a result, a beautiful, lightweight and high-strength glazed hollow material with a sealed end face was obtained.

Example 2 A glazed extruded hollow ceramic plate was produced in the same manner as in Example 1 except that the end surface of the extruded hollow member 1 was sealed by the method shown in FIG. In addition, the laser beam was applied to the joint (the B line in FIG. 5) between the extruded hollow member 1 and the blind plate 8, thereby melting the joint interface between the extruded hollow member 1 and the blind plate 6. As a result, an extremely beautiful, lightweight, and high-strength glazed hollow member with end-face sealing was obtained.

Example 3 A glaze-extruded hollow ceramics plate was produced in the same manner as in Example 2, except that the melt-temporary bonding was performed using an electron beam instead of a laser beam. The electron beam had a voltage of 25 kV and a current of 18 mA, and the welding speed was 5 cm / min. As a result, an extremely beautiful, lightweight, and high-strength glazed hollow member with end-face sealing was obtained.

Example 4 A glazed extruded hollow ceramics plate was produced in the same manner as in Example 2, except that plasma irradiation was performed on the laser irradiation part B with a plasma gun instead of laser light. The powder to be sprayed was obtained by pulverizing a ceramic material of a hollow member to 3000 mesh or less.

As a result, similarly beautiful, lightweight and high-strength glazed hollow members with end-face sealing were obtained.

[Effects of the Invention] As described in detail above, according to the method for producing a glaze-extruded hollow ceramic plate having a sealed end face according to the present invention, the end face has excellent adhesion and high bonding strength, which is extremely useful as a building material. The sealed end-face-glazed hollow member can be manufactured efficiently and industrially advantageously.

The glazed extruded hollow ceramic plate manufactured by the method of the present invention has a sealed end face, so that there is no need to perform hollow processing for caulking or sealing during construction.
Construction work becomes easy. Further, since intrusion of water into the inside is surely prevented, corrosion and deterioration from inside the member can be prevented.

The glazed extruded hollow ceramic plate produced by the method of the present invention is excellent in aesthetic appearance because it is glazed. Also,
By taking joints deeply during construction, a finished surface with a solid feeling can be obtained.

[Brief description of the drawings]

1 to 5 are perspective views for explaining a method of the embodiment of the present invention, and FIG. 6 is a perspective view of an extruded hollow member. 1 ... hollow extrusion member, 2 ... hollow portion, 4 ... plug-like member, 5, 6, 7, 8 ... blind plate.

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-61-270439 (JP, A) JP-A-62-43117 (JP, A) JP-A-58-125571 (JP, A) JP-A-1- 230485 (JP, A) Fully open Showa 62-32118 (JP, U) Really open Showa 50-80223 (JP, U)

Claims (1)

(57) [Claims] 1. A calcined ceramic extruded hollow member,
The extruded hollow member is made of the same material as the extruded hollow member, and is temporarily bonded to a calcined ceramic sealing member that seals at least a hollow portion of an end surface of the extruded hollow member by melting or spraying the contact between the two members. A method for producing a glaze-extruded hollow ceramic plate having a sealed end face, wherein the two members are joined by firing and then firing.