JPH0584737B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a ceramic tile used for lining the inner surface of a metal can body, which is prone to wear.

(Prior art) For example, casings for crushers and classifiers,
BACKGROUND ART It has been conventional practice to line the inner surface of a metal can body, which is susceptible to abrasion due to internal powder, with a ceramic tile lining having excellent abrasion resistance and corrosion resistance. However, conventional ceramic tiles are flat and are directly bonded to the base material of the can body using an inorganic or organic adhesive.

However, because conventional ceramic tiles are bonded to the surface of the base material using only the strength of the adhesive, they are inferior in heat resistance, strength, and durability, and the thickness of the adhesive layer is insufficient in areas where the base material is curved. There were drawbacks such as the tiles tending to be uniform and small tiles easily peeling off.

(Problems to be Solved by the Invention) The present invention solves the above-mentioned drawbacks of conventional ceramic tiles, and can provide a lining with excellent heat resistance, strength, and durability on the surface of a base material such as a can body. It was completed to provide ceramic tiles.

(Means for Solving the Problems) The present invention provides a means for attaching a metal bolt to the back surface of a tile main body, which is placed on the surface of a base material via an elastic body, using a friction welding method or a brazing method, using a metal intermediate material. It is characterized by being joined by an attachment method.

(Example) Next, the present invention will be described in more detail with reference to illustrated examples.

FIG. 1 shows a first embodiment of the present invention.
1 is partially stabilized zirconia (PSZ), alumina,
The tile main body part 2 is made of ceramic having excellent wear resistance and corrosion resistance, such as silicon carbide, and the metal bolt 2 is joined to the back surface of the tile main body part 2 by friction welding via an intermediate material 3 made of aluminum, for example. By interposing the intermediate material 3 made of a metal having a lower melting point than the tile main body 1 and the metal bolts 2, the ceramic tile main body 1 and the metal bolt 2 are firmly joined. The strength of the joint becomes greater than the strength of the aluminum itself, and when a tensile test is performed, the aluminum part breaks. In addition, a metallized layer, silver solder, or the like may be used as the intermediate material 3, and the tile main body portion 1 and the metal bolt 2 may be joined by a brazing method.

In both the friction welding method and the brazing method, the intermediate material 3 made of a metal with a lower melting point than the tile main portion 1 and the metal bolts 2 heats the tile main portion 1 and the metal bolts 2 during joining. It is heated to a temperature that does not deform but melts itself, and solidifies as it enters the gaps between the fine irregularities on the surfaces of the tile main body 1 and the metal bolts 2. For this reason, the intermediate material 3, the tile main body 1, and the metal bolt 2 are brought into close contact with each other at the interface, and a mechanically strong bond is obtained. Furthermore, since the intermediate material 3 is made of metal, it goes without saying that its strength is greater than that of conventional inorganic or organic adhesives.

Such ceramic tiles are arranged with the back surface of the tile main body 1 in close contact with the upper surface of the elastic body 11 on the surface of the base material 10 such as a can, and the base material 10
A metal bolt 2 is inserted through the through hole 12 and is firmly fixed to the base material 10 by a nut 4 on the back side. At this time, in order to improve the sealing performance between the elastic body 11 and the tile main body 1,
It is preferable to form a concavo-convex portion 5 on the back surface of the tile main body 1, and in some cases, a groove may be formed on the back surface of the tile main body 1 and an O-ring can be attached thereto. As the elastic body 11, for example, silicone rubber,
Butyl rubber, Viton, etc. can be used, but the following method can be used to make the upper surface of the tile main body 1 a uniform surface.

That is, first, a ceramic tile is temporarily fixed on the surface of the base material 10, and the height is adjusted by interposing a spacer such as a washer between the base material 10 and the tile main part 1 so that the upper surface becomes a uniform surface. . At this time, 1
Providing multiple metal bolts on each ceramic tile makes it easy to adjust the height and angle. Next, remove the ceramic tile from the base material surface,
After placing the raw rubber on the surface of the base material 10, the ceramic tile is again tightened to the determined position. If the rubber is heated and cured in this state to harden it and then the protruding rubber is removed,
Creates a uniform lining on the top surface. Such an elastic body 11 also plays the role of absorbing errors in the shape of the base material 10 and the tile main body 1, as well as absorbing vibrations and shocks during use.

FIG. 2 shows a second embodiment, in which a recess 6 is formed in the center of the lower surface of the tile main body 1, and an annular shape made of fluorine resin such as Teflon is formed on the lower surface of the peripheral edge 7 of the tile main body 1. Packet 8 is attached. In the embodiment shown in FIG. 2, a lining sheet is used as the elastic body 11, and required portions of this lining sheet are fixed with ceramic tiles to form a corrosion-resistant lining.

(Function) In the ceramic tile of the present invention configured as described above, a metal bolt 2 is joined to the back surface of the ceramic tile main body 1 by a friction welding method or a brazing method via a metal intermediate material 3. Therefore, it is possible to make an extremely strong connection with bolts compared to conventional adhesives bonded to the surface of the base material. Therefore, a lining with excellent heat resistance, strength, and durability can be formed without being affected by the strength or heat resistance of the adhesive. Further, as shown in the embodiment, if the uneven part 5, the annular packing 8, etc. are provided on the back surface of the tile main body part 1, this part can be completely sealed, and the through holes 12 can be completely sealed.
It is possible to prevent internal gas and liquid from leaking to the back surface of the base material 10 through.

(Effects of the Invention) As explained above, the present invention is a device that can be firmly fixed to the surface of a base material using metal bolts, and is suitable for use in internal powders such as the casing of a crusher or classifier. It is suitable for applying a corrosion-resistant and abrasion-resistant lining made of ceramic tiles with excellent heat resistance, strength, and durability to the inner surface of a metal can body, etc., which is easily abraded by the body.

Therefore, the present invention greatly contributes to the development of industry as a ceramic tile that eliminates the problems of the conventional art.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing a first embodiment of the present invention;
FIG. 2 is a sectional view showing the second embodiment. 1: Tile main body, 2: Metal bolt, 3: Intermediate material, 10: Base material, 11: Elastic body.

Claims (1)

[Claims] 1 A metal intermediate material 3 is placed on the back surface of the tile main body 1 which is placed on the surface of the base material 10 via the elastic body 11.
A ceramic tile characterized by joining metal bolts 2 via friction welding or brazing.