JPS63197879A - Setter for baking ceramics - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a setter used for firing rod-shaped or disc-shaped ceramics such as electronic parts.

[Prior Art] For example, in order to manufacture BaTiO3-based disk type capacitors, ferrites, etc., a groove is formed using a setter made of ZrO2, etc., and a disk-shaped object to be fired is brought into contact with the circumferential surface of the groove. It is placed and fired.

Conventionally, the above-mentioned setter is as shown in Fig. 3(a) (plan view).
As shown in (b) (cross-sectional view), a setter 1 having two continuous inclined surfaces and an inverted V-shaped cross section is used.

Firing of ceramics using this setter 1 is performed as shown in FIG. In Figure 4, plywood 2
A plurality of setters 1 are arranged on the upper side in the width direction and in the longitudinal direction, and adjacent setters 1 arranged in the width direction are arranged.
A large number of disk-shaped objects 3 to be fired are placed in a V-shaped groove formed by inclined surfaces of the objects 3 so that their circumferential surfaces are in contact with each other. Further, the setter 1 and the base plate 2 on which the objects to be fired 3 are installed are stacked in multiple stages and loaded into a firing furnace, where firing is performed.

[Problems to be solved by the invention] However, when a conventional setter is used, residual strain occurs in the setter after firing, and a deterioration layer is likely to be formed on its surface, so it must be replaced after about 30 uses. However, there was a problem that the lifespan was short.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a long-life ceramic firing setter.

[Means for Solving the Problems] The ceramic firing setter of the present invention is a setter having three or more continuous sloped surfaces, and the setter has a groove or a plurality of setters are arranged adjacently. This method is characterized in that the ceramic object to be fired is placed in the groove formed by this process, with its circumferential surface in contact with the ceramic object, and then fired.

[Function] The ceramic firing setter of the present invention has an N-shaped cross section when it has three consecutive inclined surfaces, and an M-shaped cross section when it has four consecutive inclined surfaces. Yes, it can be used by turning it over after each firing, and when firing continuously, the thermal effects of the two firings before and after are canceled out, reducing residual distortion. . Furthermore, since one surface is not used continuously, generation of a degraded layer on the surface can be alleviated.

[Example] Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

As shown in FIGS. 1(a) (plan view) and (b) (cross-sectional view), the setter 11 according to the present invention has three continuous inclined surfaces and has an N-shaped cross section. .

The firing of ceramics using this setter 11 is performed in the second
This is done as shown in the figure. In FIG. 2, a plurality of setters 11 are placed on the base plate 12 in the width direction and in the longitudinal direction, and the setters 11 have a V-shaped groove or an inclination between adjacent setters 11jl arranged in the width direction. A large number of disk-shaped objects to be fired 13 are placed in the V-shaped groove formed by the surface so that their peripheral surfaces are in contact with each other. Furthermore, the base plate 12 on which the setter 11 and the object to be fired 13 are installed is stacked in multiple stages and loaded into a firing furnace, where firing is performed.

When firing a ceramic product, the sweater 11 is used by inverting it for each firing. Note that even if the setter 11 is reversed, since the cross section of the setter 11 has a point-symmetrical shape, it has exactly the same shape, and firing is still performed in the state shown in FIG. 2.

If such a setter 11 is used, since the setter 11 is reversed after each firing, the thermal effects caused by the two firings before and after firing are canceled out, and residual strain can be significantly reduced. Furthermore, since one surface is not used continuously, generation of a degraded layer on the surface can be alleviated. As a result, the life of the setter can be significantly improved compared to conventional setters.

In fact, while the conventional setter had to be replaced after about 30 uses, the setter according to the present invention can be used about 90 times, which is about three times longer than the conventional setter. .

In the above embodiment, a setter having an N-shaped cross section has been described, but the same effect as described above can be obtained by using a setter having an M-shaped cross section or the like.

Further, in the above embodiment, the case where a disk-shaped object to be fired is fired is explained, but it goes without saying that the center according to the present invention can be similarly applied to, for example, firing a rod-shaped object to be fired.

[Effects of the Invention] As detailed above, according to the present invention, a long-life ceramic firing setter can be provided.

[Brief explanation of the drawing]

Figure 81 (a) is a plan view of a setter for firing ceramics in an embodiment of the present invention, Figure 81 (b) is a sectional view of the setter, and Figure 2 is a perspective view showing the state of the setter when firing ceramic products. , FIG. 3(a) is a plan view of a conventional setter for firing ceramics, FIG. 3(b) is a sectional view of the setter, and FIG. 4 is a perspective view showing the state when ceramic products are fired by the setter. . 11... Setter, 12... Base plate! 3...Object to be fired. Applicant's agent Patent attorney Takehiko Suzue (b) ℃~''' Figure 1 Figure 2

Claims (2)

[Claims] (1) A setter having three or more continuous sloped surfaces, in which the ceramic material to be fired is placed on the circumferential surface of the setter in the groove of one setter itself or in the groove formed by arranging a plurality of setters adjacently. A setter for firing ceramics, which is characterized in that ceramics are placed in contact with each other and fired. (2) The setter for firing ceramics according to claim 1, characterized in that it is made of zirconia or alumina.