JPH04225787A - Shelf plate made of refractory - Google Patents
Shelf plate made of refractoryInfo
- Publication number
- JPH04225787A JPH04225787A JP41439690A JP41439690A JPH04225787A JP H04225787 A JPH04225787 A JP H04225787A JP 41439690 A JP41439690 A JP 41439690A JP 41439690 A JP41439690 A JP 41439690A JP H04225787 A JPH04225787 A JP H04225787A
- Authority
- JP
- Japan
- Prior art keywords
- refractory
- shelf board
- slit
- shelf plate
- slits
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000945 filler Substances 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims description 8
- 102100027340 Slit homolog 2 protein Human genes 0.000 abstract description 9
- 101710133576 Slit homolog 2 protein Proteins 0.000 abstract description 9
- 238000004901 spalling Methods 0.000 abstract description 9
- 230000008646 thermal stress Effects 0.000 abstract description 4
- 230000013011 mating Effects 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 239000000919 ceramic Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 239000011819 refractory material Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000010304 firing Methods 0.000 description 4
- 239000004065 semiconductor Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009970 fire resistant effect Effects 0.000 description 2
- -1 tiles Substances 0.000 description 2
- 101700004678 SLIT3 Proteins 0.000 description 1
- 102100027339 Slit homolog 3 protein Human genes 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 229910052845 zircon Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Furnace Charging Or Discharging (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は陶磁器、タイル、あるい
は半導体素子等のセラミック体や、各種金属の焼鈍など
に好適に用いることができる耐火物製棚板に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refractory shelf board that can be suitably used for annealing ceramics, tiles, ceramic bodies such as semiconductor devices, and various metals.
【０００２】0002
【従来の技術】従来より、碍子、衛生陶器、食器、額縁
、点火栓及び陶管等の陶磁器や、タイル、半導体素子等
のセラミック体の被焼成物を焼成するに際して、端辺よ
り切込み（スリット）を設けた耐火物製棚板（実開昭４
９−４６０４４号）、および該切込みに充填材を埋めて
形成した耐火物製棚板（実公昭５４−３３９７４号）が
使用されている。このような耐火物製棚板は、一時間当
りの昇温速度が４００℃を超すような苛酷な使用条件下
であっても、棚板に対して熱的スポーリングや機械的ス
ポーリングが発生しにくいという優れた効果が認められ
ている。[Prior Art] Conventionally, when firing ceramic objects such as insulators, sanitary ware, tableware, picture frames, spark plugs, and ceramic tubes, and ceramic bodies such as tiles and semiconductor devices, cuts (slits) have been made from the edges. ) with refractory shelves
No. 9-46044), and a refractory shelf board formed by filling the cut with a filler (Japanese Utility Model Publication No. 54-33974). Such refractory shelves are subject to thermal and mechanical spalling even under severe usage conditions where the temperature rise rate exceeds 400°C per hour. It has been recognized that it has an excellent effect of being difficult to use.
【０００３】0003
【発明が解決しようとする課題】この耐火物製棚板１０
は、図３に示すように、その上に比較的小さな被焼成物
１１を多数載置して焼成する場合にあっては、それぞれ
の被焼成物１１の間に間隔１２があるため、棚板１０の
中央部Ａと端辺部Ｂとの温度差は小さく、従って棚板１
０に生じる熱応力は小さい。[Problem to be solved by the invention] This shelf board 10 made of refractory material
As shown in FIG. 3, when a large number of relatively small objects 11 are placed on it and fired, there is a gap 12 between each object 11, so the shelf board The temperature difference between the center part A and the edge part B of the shelf board 1 is small, so the shelf board 1
The thermal stress generated at 0 is small.
【０００４】一方、図４に示すように、棚板１０の上に
比較的大きな被焼成物１１を載置し焼成する場合には、
被焼成物１１が棚板１０のほぼ全面を覆うことになるた
め、棚板１０の中央部Ａと端辺部Ｂとの温度差が大きく
なり、その結果棚板１０の中央部に発生する熱応力が大
きくなり、割れが発生し易くなるという問題があること
が判明した。また、端部までスリットが達していると、
使用中にクリープ変形等によりスリットの左右で段差が
生じ、タイル等フラットな製品を焼成する場合、タイル
等がスリット部において段差がついてしまうという不都
合が生じた。On the other hand, as shown in FIG. 4, when a relatively large object 11 to be fired is placed on a shelf board 10 and fired,
Since the object to be fired 11 covers almost the entire surface of the shelf board 10, the temperature difference between the central part A and the edge part B of the shelf board 10 increases, and as a result, the heat generated in the central part of the shelf board 10 increases. It has been found that there is a problem in that stress increases and cracks are more likely to occur. Also, if the slit reaches the end,
During use, a level difference occurs on the left and right sides of the slit due to creep deformation, etc., and when firing a flat product such as a tile, there is an inconvenience that the tile etc. has a level difference at the slit part.
【０００５】[0005]
【課題を解決するための手段】そこで、本発明者は種々
検討を行なった結果、耐火物製棚板の中央部にスリット
を形成し、ここに充填材を充填することにより上記の問
題を解決できることを見出し、本発明に到達した。即ち
、本発明によれば、加熱炉に使用する耐火物製棚板であ
って、該耐火物製棚板の中央部に板の端部まで貫通しな
いスリットを形成したことを特徴とする耐火物製棚板が
提供される。[Means for Solving the Problem] Therefore, as a result of various studies, the present inventor solved the above problem by forming a slit in the center of a refractory shelf board and filling the slit with a filler. We have discovered what we can do and have arrived at the present invention. That is, according to the present invention, there is provided a refractory shelf board for use in a heating furnace, characterized in that a slit is formed in the center of the refractory shelf board that does not penetrate to the end of the board. Manufactured shelves are provided.
【０００６】また本発明においては、スリットを耐火性
充填材或いは耐火物で充填すること、またスリットの端
部をＲ加工すること、さらに耐火物製棚板の中央部のほ
かに、端辺部からそれに対向する端辺部に向けてスリッ
トを形成することにより、耐火物製棚板の耐スポーリン
グ性をより向上させることから好ましい。In addition, in the present invention, the slits are filled with a refractory filler or a refractory material, the ends of the slits are rounded, and the edges of the refractory shelf board are It is preferable to form a slit from the slit toward the opposite edge, since this further improves the spalling resistance of the refractory shelf board.
【０００７】[0007]
【作用】本発明では、耐火物製棚板の中央部にスリット
を形成し、好ましくはこのスリットを耐火性充填材或い
は耐火物で充填することに特徴を有する。従って、本発
明の耐火物製棚板の上に載置する被焼成物の大小に拘ら
ず、焼成時の熱応力が分散できるようになり、棚板の割
れの発生を極力抑制することができる。[Operation] The present invention is characterized in that a slit is formed in the center of the shelf made of refractory material, and this slit is preferably filled with a refractory filler or refractory material. Therefore, irrespective of the size of the object to be fired placed on the refractory shelf of the present invention, the thermal stress during firing can be dispersed, and the occurrence of cracks in the shelf can be suppressed as much as possible. .
【０００８】[0008]
【実施例】以下、図示例に基いて本発明を更に説明する
が、本発明はこれらの図示例に限られるものではない。
図１及び図２はそれぞれ本発明の実施例を示す平面図で
、１は耐火物よりなる略正方形の棚板であり、加熱炉内
に棚組されて被焼成物を載置するために用いられるもの
である。この棚板１には、中央部に十字形（図１参照）
或いはＸ字形（図２参照）のスリット２が形成されてい
る。尚、スリット２の形状はこれらの例に限られず、そ
の他種々の態様が可能である。またスリット２は直線的
のほか、曲線的に形成してもよい。スリット２の長さと
しては、一辺の長さの約２０％〜７０％の範囲が耐スポ
ーリング性向上のために好ましい。また、スリット２の
端部３をＲ加工（曲面化処理）することが耐スポーリン
グ性向上の観点から好ましい。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be further explained below based on illustrated examples, but the present invention is not limited to these illustrated examples. 1 and 2 are plan views showing embodiments of the present invention, respectively. Reference numeral 1 is a substantially square shelf board made of refractory material, which is assembled into a shelf in a heating furnace and used to place objects to be fired. It is something that can be done. This shelf board 1 has a cross shape in the center (see Figure 1).
Alternatively, an X-shaped slit 2 (see FIG. 2) is formed. Note that the shape of the slit 2 is not limited to these examples, and various other shapes are possible. Further, the slit 2 may be formed not only linearly but also curvedly. The length of the slit 2 is preferably in the range of about 20% to 70% of the length of one side in order to improve spalling resistance. Further, it is preferable to R process (curve surface treatment) the end portion 3 of the slit 2 from the viewpoint of improving spalling resistance.
【０００９】本発明では上記のように棚板１の中央部に
スリット２を設けるものであるが、更に、棚板１の互い
に対向する端辺部４ａ，４ｂから相手辺に向けてスリッ
ト５ａ，５ｂを形成することができる。この場合には、
棚板１の耐スポーリング性がより向上する。尚、本発明
でいうスリット２，５ａ，５ｂとは、通常の棚板１を貫
通する切込みのみを意味するばかりでなく、溝などの凹
みをも意味するものである。In the present invention, the slit 2 is provided in the center of the shelf board 1 as described above, but the slits 5a, 5a, 5b can be formed. In this case,
The spalling resistance of the shelf board 1 is further improved. Note that the slits 2, 5a, and 5b as used in the present invention mean not only cuts that pass through the ordinary shelf board 1, but also recesses such as grooves.
【００１０】このようなスリット２，５ａ，５ｂは、耐
火性充填材或いは耐火物により見掛け上切込み或いは凹
みがない状態に充填する。耐火性充填材或いは耐火物の
スリット２，５ａ，５ｂへの充填により、使用に当たっ
て棚板１の表面に塗布あるいは散布される耐火性コーテ
ィング材などがスリット２，５ａ，５ｂから一部落下し
て棚組された下の棚板１上に載置されている被焼成物の
上部表面にふりかかり焼成中に融着して異物になったり
する、いわゆるボロフリ現象を防止する。The slits 2, 5a, and 5b are filled with a refractory filler or refractory material so that there are no apparent cuts or depressions. By filling the slits 2, 5a, 5b with fire-resistant filler or refractory, some of the fire-resistant coating material applied or sprayed on the surface of the shelf board 1 during use may fall from the slits 2, 5a, 5b. To prevent the so-called rag-fri phenomenon, in which the objects to be fired sprinkled onto the upper surface of the objects to be fired placed on the lower shelf board 1 of the assembled shelves and fused during firing to become foreign objects.
【００１１】耐火性充填材或いは耐火物としては、アル
ミナ質、シリカ質、ムライト質、ジルコン質等の最高使
用温度で棚板１と反応を起さず、また棚板１に載置され
る被焼成物である陶磁器、タイル、半導体素子等のセラ
ミック体等とも反応しない材質であり、さらに使用温度
では少なくとも焼固しているように調製されていれば、
いずれの材料でも使用することができる。この耐火性充
填材或いは耐火物のスリット２，５ａ，５ｂへの充填は
、棚板１の製造のための焼成前に、または焼成後のいず
れの場合にも実施することができる。As the refractory filler or refractory, materials such as alumina, silica, mullite, and zircon may be used, which do not react with the shelf board 1 at the maximum operating temperature, and which are suitable for materials placed on the shelf board 1. If the material does not react with fired materials such as ceramics, tiles, and ceramic bodies such as semiconductor devices, and if it is prepared so that it is at least hardened at the operating temperature,
Any material can be used. The filling of the refractory filler or refractory into the slits 2, 5a, 5b can be carried out either before or after the baking for manufacturing the shelf board 1.
【００１２】次に、具体的な実施結果を説明する。
（実施例、比較例）
４００×３５０×１０ｍｍのサイズのＳｉＣ棚板でスリ
ットの形状を変えたもの３種、スリットがないもの１種
のそれぞれ２枚を準備し、８００℃に加熱した後、大気
中に引き出すサイクルを５回、及び更に続けて１０回繰
り返し、クラックの入り具合いを調査した。更にスリッ
ト端部の丸め（Ｒ加工）効果を上記の条件で調査した。
結果を表１に示す。Next, concrete implementation results will be explained. (Example, Comparative Example) Three types of SiC shelf boards with a size of 400 x 350 x 10 mm with different slit shapes and one type without slits were prepared, and after heating them to 800 ° C. The cycle of drawing out into the atmosphere was repeated 5 times, and then 10 times, and the degree of cracking was investigated. Furthermore, the rounding (R processing) effect of the slit end was investigated under the above conditions. The results are shown in Table 1.
【００１３】[0013]
【表１】[Table 1]
【００１４】[0014]
【発明の効果】以上説明したように、本発明によれば次
の効果が奏せられる。請求項１記載の耐火物製棚板によ
れば、中央部にスリットを形成したので、棚板に載置す
る被焼成物の大小に拘らず熱応力が分散し、耐スポーリ
ング性が向上する。請求項２記載の耐火物製棚板によれ
ば、スリットを耐火性充填材或いは耐火物で充填したの
で、耐スポーリング性が向上する上、ボロフリ現象を防
止する。請求項３および４記載の耐火物製棚板によれば
、耐スポーリング性がさらに向上するという効果がある
。[Effects of the Invention] As explained above, according to the present invention, the following effects can be achieved. According to the refractory shelf board according to claim 1, since the slit is formed in the center, thermal stress is dispersed regardless of the size of the object to be fired placed on the shelf board, and spalling resistance is improved. . According to the refractory shelf board according to the second aspect of the present invention, since the slits are filled with a refractory filler or a refractory, spalling resistance is improved and the sagging phenomenon is prevented. According to the refractory shelf board according to claims 3 and 4, there is an effect that spalling resistance is further improved.
【図１】本発明の一実施例を示す平面図である。FIG. 1 is a plan view showing one embodiment of the present invention.
【図２】本発明の他の実施例を示す平面図である。FIG. 2 is a plan view showing another embodiment of the present invention.
【図３】棚板上に比較的小さな被焼成物を多数載置した
例を示す断面説明図である。FIG. 3 is an explanatory cross-sectional view showing an example in which a large number of relatively small objects to be fired are placed on a shelf board.
【図４】棚板上に比較的大きな被焼成物を載置した例を
示す断面説明図である。FIG. 4 is an explanatory cross-sectional view showing an example in which a relatively large object to be fired is placed on a shelf board.
【図５】比較例１の冷熱サイクル５回終了後のＳｉＣ棚
板のクラック発生状況を示す説明図である。FIG. 5 is an explanatory diagram showing the occurrence of cracks in the SiC shelf board after five cooling/heating cycles in Comparative Example 1.
【図６】比較例１の冷熱サイクル１０回終了後のＳｉＣ
棚板のクラック発生状況を示す説明図である。FIG. 6: SiC after 10 cooling/heating cycles of Comparative Example 1
It is an explanatory view showing the occurrence of cracks in the shelf board.
【図７】比較例２の冷熱サイクル５回終了後のＳｉＣ棚
板のクラック発生状況を示す説明図である。FIG. 7 is an explanatory diagram showing the occurrence of cracks in the SiC shelf board after five cooling/heating cycles in Comparative Example 2.
【図８】比較例２の冷熱サイクル１０回終了後のＳｉＣ
棚板のクラック発生状況を示す説明図である。FIG. 8: SiC after 10 cooling/heating cycles of Comparative Example 2
It is an explanatory view showing the occurrence of cracks in the shelf board.
１ 耐火物製棚板 ２，５ａ，５ｂ スリット ３ スリット２の端部 ４ａ，４ｂ 棚板の端辺部 1. Refractory shelf board 2, 5a, 5b slit 3 End of slit 2 4a, 4b Edges of shelf boards
Claims (4)
て、該耐火物製棚板の中央部に板の端部まで貫通しない
スリットを形成したことを特徴とする耐火物製棚板。1. A refractory shelf for use in a heating furnace, characterized in that a slit is formed in the center of the refractory shelf that does not penetrate to the ends of the plate. .
で充填した請求項１記載の耐火物製棚板。2. The refractory shelf board according to claim 1, wherein the slits are filled with a refractory filler or a refractory.
求項１または２記載の耐火物製棚板。3. The refractory shelf board according to claim 1, wherein the ends of the slits are rounded.
に対向する端辺部に向けてスリットを形成した請求項１
〜３のいずれかに記載の耐火物製棚板。Claim 4: Further, a slit is formed from one end of the refractory shelf board to the opposite end.
3. The refractory shelf board according to any one of .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP41439690A JPH04225787A (en) | 1990-12-26 | 1990-12-26 | Shelf plate made of refractory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP41439690A JPH04225787A (en) | 1990-12-26 | 1990-12-26 | Shelf plate made of refractory |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04225787A true JPH04225787A (en) | 1992-08-14 |
Family
ID=18522882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP41439690A Pending JPH04225787A (en) | 1990-12-26 | 1990-12-26 | Shelf plate made of refractory |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04225787A (en) |
-
1990
- 1990-12-26 JP JP41439690A patent/JPH04225787A/en active Pending
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