JPH04117395U - Baking jig - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose is to provide a baking jig that is difficult to deform when used for baking. [Structure] To provide a baking jig characterized by having a flat plate having grooves in directions perpendicular to each other on the upper and lower surfaces thereof.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to firing jigs used when firing and heat treating various ceramics. do.

0002

[Conventional technology]

Conventionally, depending on the shape of the object to be fired, a flat firing substrate or a grooved firing base plate (fixed base plate) was used. tools) are used. This grooved jig is generally used to prevent the object to be fired from rolling. Generally, there are grooves on only one side. Immediately These grooves are used to reduce the contact area between the object to be fired and the jig, or to It is used to hold a shaped object to be fired.

0003

[Problem that the idea aims to solve]

This invention was made to solve the above problems, and the Sometimes, the purpose is to provide a baking jig that is difficult to deform.

0004

[Means to solve the problem]

This invention was developed to solve the above technical problem. A firing jig characterized in that the surface has grooves in mutually orthogonal directions. Provide ingredients.

[0005]

[Effect]

The firing jig is generally a flat plate, but it is used together with the object to be fired in the firing furnace. When heated and cooled repeatedly, it is easily deformed, and one firing process It is slightly deformed during processing, and after being used several times, it becomes even more deformed. No further use will be possible. In other words, it may react with the object to be fired. In addition, the components of the object to be fired may be impregnated into the jig. Naturally, the jig is prone to deformation. That is, deformation occurs due to internal causes. In addition, a heavy object to be fired is placed on top of the firing jig, and the baking jig is heated to a high temperature. Due to the heavy weight the heavy plate is held in the furnace, it bends. It may happen. That is, deformation occurs due to external causes of the firing jig. Therefore, conventional jigs and firing frames are easily deformed, and in order to prevent this, By increasing the thickness, it is made more resistant to deformation. Furthermore, there is a groove on one side. For firing jigs with .

[0006] Additionally, conventionally, there are firing jigs with grooves on both sides, but these simply use both sides alternately. By alternating the direction of deformation during firing, deformation during firing is suppressed. Or simply try to make effective use of both the upper and lower surfaces. It was something that

[0007] The configuration of the present invention eliminates the changes caused by the internal and external factors of the firing jig as described above. In order to reduce the shape as much as possible, the It was discovered that it is possible to prevent deformation of the firing jig during firing by forming grooves in the . In other words, the main point of the baking jig of the present invention is that the baking jig is perpendicular to the top and bottom surfaces of the flat baking jig. It is to form grooves in the direction of

[0008] As mentioned above, the direction is asymmetric and perpendicular to the upper and lower surfaces of the flat baking jig. By forming grooves in such a way that the flat plate resists stress during firing, You can increase your power. In other words, the firing jig in the firing atmosphere is not exposed to high temperatures. This causes it to become soft and bend even under the slightest load, but this is not the case in this study. In the same way that folded paper can retain some strength due to the groove cutting according to the plan. Although flat plate jigs are also softened at high temperatures, they do not bend, so they cannot be baked. When cooled to room temperature after the formation process, it retains its normal shape and does not deteriorate.

[0009] Next, the firing jig of the present invention will be specifically explained using examples. It is not limited by these.

0010

[Example 1] FIG. 1 is a schematic perspective view showing the entire firing jig of the present invention. As shown in Figure 1, on the zirconia firing jig 1 with a size of 75 x 75 x 6 mm. A groove with a V-shaped cross section with a width of 4 mm and a depth of 2 mm is formed on the entire bottom surface. Ru. That is, a V-shaped groove 2 is formed in the vertical direction on the upper surface as shown in the figure, and the groove is perpendicular to the V-shaped groove 2. A groove 3 is formed on the lower surface in the direction of the arrow.

[0011] A PTC thermistor element was fired using this jig. For comparison, the groove Create a firing jig with a thickness of 3 mm without a PCT thermistor element in the same way. Used for baking roe. The results are shown in Table 1 below. The firing jig of this invention is I turned it over and used it. For flat firing jigs without grooves, use only one side. Tests were carried out for the case in which the upper and lower surfaces were used alternately (Comparative Example 1) and the case in which both the upper and lower surfaces were used alternately (Comparative Example 2). The results are shown below.

Table 1 Number of firings 5 10 20 30 Examples (alternate use) ○ ○ ○ ○ Comparative example 1 × − − − Comparative example 2 ○ ○ × −

[0013] The above measurements were conducted on the diagonal deformation ( In other words, the degree of warpage) is measured, and when there is little deformation and the warp does not exceed 0.3 mm, it is ○. When the warpage exceeds 0.3 mm, it is marked as unusable and indicated by an x mark.

[0014]

[Example 2] Furthermore, as shown in Fig. 2, the baking jig of the present invention does not require cutting grooves on the entire surface. A similar effect can be obtained if several grooves are cut in a portion of the flat plate. Furthermore, regarding the shape of the groove, not only the V-shaped groove shown in Figs. 1 and 2, but also the shape shown in Fig. 3. As shown in , a U-shaped groove (or a U-shaped groove) is also effective.

[0015]

[Effect of the idea]

As explained above, the firing jig of the present invention can achieve the above-mentioned effects. Ta. Putting these together, we get the following remarkable technical effects. That is, firstly, the resistance to deformation due to internal and external factors of the firing frame jig is Provided an increased number of firing jigs. Second, the degree of deformation of the firing jig itself was reduced during firing manufacturing. Thirdly, the difficulties in manufacturing and using large, thin-walled baking jigs are improved.

[Brief explanation of drawings]

FIG. 1 is a schematic perspective view of a firing jig of the present invention.

FIG. 2 is a schematic perspective view of another example of the firing jig of the present invention.

FIG. 3 is a schematic front view and a plan view of another example of the firing jig of the present invention.

[Explanation of symbols]

1 Planar jig 2 Top groove 3 Bottom groove

Claims (1)

[Scope of utility model registration request] 1. A baking jig characterized in that it is a flat plate having grooves in directions orthogonal to each other on the upper and lower surfaces thereof.