JP7545476B2 - Plate-shaped firing jig - Google Patents

Plate-shaped firing jig Download PDF

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JP7545476B2
JP7545476B2 JP2022536571A JP2022536571A JP7545476B2 JP 7545476 B2 JP7545476 B2 JP 7545476B2 JP 2022536571 A JP2022536571 A JP 2022536571A JP 2022536571 A JP2022536571 A JP 2022536571A JP 7545476 B2 JP7545476 B2 JP 7545476B2
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plate
shaped
base material
shaped base
firing jig
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JPWO2022158072A1 (en
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高文 上野
秀徳 坂本
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Mitsui Mining and Smelting Co Ltd
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00Charging; Discharging; Manipulation of charge
    • F27D3/12Travelling or movable supports or containers for the charge

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Resistance Heating (AREA)
  • Adornments (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Optical Elements Other Than Lenses (AREA)

Description

本発明は、セラミックス製品などの焼成の際、それらを載置する、板状焼成治具に関する。The present invention relates to a plate-shaped firing jig on which ceramic products and the like are placed when they are fired.

従来、セラミックス製品などを製造する過程には、焼成炉内で被焼成物を焼成する焼成工程が含まれる。当該焼成工程では、被焼成物が焼成炉内の焼成治具に載置されて焼成される。2. Description of the Related Art Conventionally, a process for manufacturing ceramic products and the like includes a firing step in which an object to be fired is fired in a firing furnace. In the firing step, the object to be fired is placed on a firing jig in the firing furnace and fired.

当該焼成治具として、被焼成物が載置される棚板(特許文献1を参照)と、被焼成物が載置された棚板を支持するセッター(特許文献2を参照)や、煉瓦部材とが提案されている。また、被焼成物が載置された焼成治具は、一段、又は複数段積層された状態で、焼成炉内に設置される。そして、焼成された被焼成物は、焼成炉外へ取り出される。As the firing jig, a shelf plate on which the object to be fired is placed (see Patent Document 1), a setter that supports the shelf plate on which the object to be fired is placed (see Patent Document 2), and a brick member have been proposed. The firing jig on which the object to be fired is placed is installed in a firing furnace in one layer or in a state where multiple layers are stacked. Then, the fired object to be fired is removed from the firing furnace.

特開平8-166191号公報Japanese Patent Application Publication No. 8-166191 国際公開第2015/008503号公報International Publication No. 2015/008503

しかしながら、被焼成物の組み換え作業や、焼成炉内外への運搬作業の際、焼成治具の角部や、端面がチッピングにより、焼成治具が破損した場合、焼成治具の交換作業が生じることになり、期待される製造スピードを維持することが困難となっていた。また、焼成治具の交換による製造コストの上昇を招く要因の一つとなっていた。However, when the firing jig is damaged due to chipping at its corners or edges during the reassembly of the fired objects or during transportation in and out of the firing furnace, the firing jig must be replaced, making it difficult to maintain the expected production speed. Also, the replacement of firing jigs is one of the factors that increases production costs.

本発明は、上記課題に鑑みて、焼成治具の破損を回避することにより、焼成工程の期待される製造スピードを維持し、また製造コストを抑制できる板状焼成治具を提供することである。In view of the above problems, the present invention provides a plate-shaped firing jig that can maintain the expected production speed of the firing process and reduce production costs by avoiding damage to the firing jig.

上記課題を解決するためになされた本発明の板状焼成治具は、板状母材と、前記板状母材の外周部から外側に向かって突出する突出部と、前記板状母材と前記突出部とを接続する接続部とを有することを特徴とする。
この構成により、焼成治具の組み換え作業や、窯炉内への運搬作業の際、角部や、端面がチッピングの発生による、焼成治具の破損を回避し、製造スピードの向上、及び製造コストの抑制を達成することができる。
The plate-shaped sintering jig of the present invention, which has been made to solve the above-mentioned problems, is characterized by having a plate-shaped base material, a protrusion protruding outward from the outer periphery of the plate-shaped base material, and a connecting portion connecting the plate-shaped base material and the protrusion.
With this configuration, damage to the firing jig due to chipping of corners or end faces when the firing jig is reassembled or transported into the kiln can be avoided, thereby improving production speed and reducing production costs.

本発明の板状焼成治具は、焼成治具の組み換え作業や、窯炉内への運搬作業の際に、焼成治具の角部や、端面でチッピングの発生による、焼成治具の破損を回避し、製造スピードの向上、及び製造コストの抑制を達成することができる。The plate-shaped firing jig of the present invention prevents damage to the firing jig due to chipping at the corners or end faces of the firing jig when it is rearranged or transported into a kiln, thereby enabling improved production speed and reduced production costs.

(a)は本発明に係る第1実施形態の板状焼成治具の平面図であり、(b)は(a)の正面図である。1A is a plan view of a plate-shaped firing jig according to a first embodiment of the present invention, and FIG. 図1のA-A線断面図である。2 is a cross-sectional view taken along line AA in FIG. 1. 図1のA-A線断面図であり、接続部の傾斜面角度の説明図である。FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, illustrating the angle of the inclined surface of the connection portion. (a)は本発明に係る第1実施形態の板状焼成治具の変形例を示す正面図であり、(b)は発明に係る第1実施形態の板状焼成治具の別の変形例を示す正面図である。1A is a front view showing a modified example of the plate-shaped firing jig of the first embodiment according to the present invention, and FIG. 1B is a front view showing another modified example of the plate-shaped firing jig of the first embodiment according to the present invention. 本発明に係る第2実施形態の板状焼成治具の平面図である。FIG. 4 is a plan view of a plate-shaped firing jig according to a second embodiment of the present invention. 図5のB-B線断面図である。6 is a cross-sectional view taken along line BB in FIG. 5. 図5のB-B線断面図であり、中空接続部の傾斜面角度の説明図である。FIG. 6 is a cross-sectional view taken along line BB in FIG. 5, illustrating the angle of the inclined surface of the hollow connector. (a)は本発明に係る第3実施形態の板状焼成治具の平面図であり、(b)は(a)の正面図である。1A is a plan view of a plate-shaped firing jig according to a third embodiment of the present invention, and FIG. 図8のC-C線断面図である。9 is a cross-sectional view taken along line CC of FIG. 8. 本発明に係る第4実施形態の板状焼成治具の平面図である。FIG. 13 is a plan view of a plate-shaped firing jig according to a fourth embodiment of the present invention. 本発明に係る第1実施形態の板状焼成治具に被焼成物を載置した状態を示す正面図である。1 is a front view showing a state in which an object to be fired is placed on a plate-shaped firing jig of a first embodiment according to the present invention. FIG. 本発明に係る第1実施形態の板状焼成治具が積層された状態を示す正面図である。1 is a front view showing a state in which plate-shaped firing jigs according to a first embodiment of the present invention are stacked. FIG. 本発明に係る板状焼成治具が積層された状態を示す別の実施例の正面図である。FIG. 11 is a front view of another embodiment showing a state in which plate-shaped firing jigs according to the present invention are stacked. 本発明に係る板状焼成治具の実施例1~20及び比較例1、2の各試験結果を示す表である。1 is a table showing test results of Examples 1 to 20 and Comparative Examples 1 and 2 of the plate-shaped firing jig according to the present invention.

以下、本発明に係る第1~4実施形態の板状焼成治具を、添付図面に基づいて説明する。Hereinafter, plate-shaped firing jigs according to first to fourth embodiments of the present invention will be described with reference to the accompanying drawings.

先ず、本発明に係る第1実施形態の板状焼成治具を、添付図面に基づいて、以下説明する。図1(a)は本発明に係る第1実施形態の板状焼成治具の平面図であり、(b)は(a)の正面図である。また、図2は本発明に係る第1実施形態の板状焼成治具のA-A線拡大図である。First, a plate-shaped baking jig according to a first embodiment of the present invention will be described below with reference to the accompanying drawings. Fig. 1(a) is a plan view of the plate-shaped baking jig according to the first embodiment of the present invention, and (b) is a front view of (a). Fig. 2 is an enlarged view of the line A-A of the plate-shaped baking jig according to the first embodiment of the present invention.

図1、2に示す通り、第1実施形態の板状焼成治具10は、板状母材11と、板状母材11の外周部12から外側に向かって突出する突出部13と、板状母材11と突出部13とを接続する接続部14とを有する。As shown in Figures 1 and 2, the plate-shaped sintering jig 10 of the first embodiment has a plate-shaped base material 11, a protrusion 13 protruding outward from an outer periphery 12 of the plate-shaped base material 11, and a connection portion 14 connecting the plate-shaped base material 11 and the protrusion 13.

板状母材11は、図1(a)に示すように、平面視において略矩形状に形成されている。また、図1(b)に示すように、板状母材11は、板状である。なお、板状母材11は、略矩形状に限定されるものではなく、例えば正方形や三角形などの多角形、または円形や楕円形などその他の形状であってもよい。As shown in Fig. 1(a), the plate-shaped base material 11 is formed in a substantially rectangular shape in a plan view. Also, as shown in Fig. 1(b), the plate-shaped base material 11 is plate-shaped. Note that the plate-shaped base material 11 is not limited to a substantially rectangular shape, and may be a polygonal shape such as a square or a triangle, or may be another shape such as a circle or an ellipse.

突出部13は、板状母材11の外周部12から外側に向かって突出する用に形成されている。ここで、突出部13は、板状母材11の外周部12の全辺長の50%以上100%以下の範囲で設けられている。このように、突出部13が外周部12の全辺長の50%以上100%以下であれば、例えば板状焼成治具10が電気炉内に搬送される際、接触しやすい電気炉の側壁面側に設けることができ、板状母材11の破損を回避することができる(図14を参照)。さらに、突出部13は、板状母材11の外周部12の全辺長の60%以上であると好ましく、さらに75%以上であるとより好ましい。The protruding portion 13 is formed to protrude outward from the outer peripheral portion 12 of the plate-shaped base material 11. Here, the protruding portion 13 is provided in a range of 50% to 100% of the total side length of the outer peripheral portion 12 of the plate-shaped base material 11. In this way, if the protruding portion 13 is 50% to 100% of the total side length of the outer peripheral portion 12, it can be provided on the side wall surface of the electric furnace that is likely to come into contact when the plate-shaped firing jig 10 is transported into the electric furnace, for example, and damage to the plate-shaped base material 11 can be avoided (see FIG. 14). Furthermore, the protruding portion 13 is preferably 60% or more of the total side length of the outer peripheral portion 12 of the plate-shaped base material 11, and more preferably 75% or more.

図2に示すように、突出部13の厚み寸法t1は、板状母材11の厚み寸法Tに対して、10%以上95%以下である。突出部13の厚み寸法t1が、板状母材11の厚み寸法Tに対して、10%以上であれば、突出部13と板状母材11との厚み寸法に差があっても配合ムラが生じることはない(図14を参照)。また、突出部13の厚み寸法t1が、板状母材11の厚み寸法Tに対して、95%未満であれば、組み換え作業や、運搬作業の際に生じるチッピングから、板状母材11の破損を回避することができる。さらに、突出部13の厚み寸法t1は、板状母材11の厚み寸法Tに対して、25%以上95%以下であると好ましく、50%以上95%以下であるとより好ましく、60%以上90%以下であるとさらに好ましい。As shown in FIG. 2, the thickness dimension t1 of the protruding portion 13 is 10% or more and 95% or less with respect to the thickness dimension T of the plate-shaped base material 11. If the thickness dimension t1 of the protruding portion 13 is 10% or more with respect to the thickness dimension T of the plate-shaped base material 11, even if there is a difference in the thickness dimension between the protruding portion 13 and the plate-shaped base material 11, no unevenness in the blending occurs (see FIG. 14). Also, if the thickness dimension t1 of the protruding portion 13 is less than 95% with respect to the thickness dimension T of the plate-shaped base material 11, damage to the plate-shaped base material 11 due to chipping occurring during reassembly or transportation can be avoided. Furthermore, the thickness dimension t1 of the protruding portion 13 is preferably 25% or more and 95% or less with respect to the thickness dimension T of the plate-shaped base material 11, more preferably 50% or more and 95% or less, and even more preferably 60% or more and 90% or less.

また、突出部13は、板状母材11の表面15、及び裏面16から所定寸法薄肉化している。具体的には、突出部13は、板状母材11の表面15、及び裏面16から所定寸法d1、d2だけ薄肉化している。In addition, the protrusion 13 is thinned by a predetermined dimension from the front surface 15 and the back surface 16 of the plate-shaped base material 11. Specifically, the protrusion 13 is thinned by predetermined dimensions d1 and d2 from the front surface 15 and the back surface 16 of the plate-shaped base material 11.

接続部14は、板状母材11と突出部13とを接続する。また、接続部14の幅寸法W1は、突出部の幅寸法w1に対して、10%以上200%以下である。接続部14の幅寸法W1は、突出部の幅寸法w1に対して、10%以上200%以下であれば、組み換え作業や、運搬作業の際に生じるチッピングから、板状母材11の破損を回避することができる(図14を参照)。The connection portion 14 connects the plate-shaped base material 11 and the protruding portion 13. The width dimension W1 of the connection portion 14 is 10% to 200% of the width dimension w1 of the protruding portion. If the width dimension W1 of the connection portion 14 is 10% to 200% of the width dimension w1 of the protruding portion, damage to the plate-shaped base material 11 due to chipping that occurs during reassembly or transportation can be avoided (see FIG. 14).

図3に示すように、接続部14は、板状母材11から突出部13に向かって傾斜する傾斜面を有しており、当該傾斜面と板状母材11の表面15、又は裏面16とのなす角度θ1、θ2が、20度以上85度以下である。当該傾斜面と板状母材11の表面15、又は裏面16とのなす角度θ1、θ2が20度以上85度以下であれば、組み換え作業や、運搬作業の際に生じるチッピングから、板状母材11の破損を回避することができる(図14を参照)。3, the connection portion 14 has an inclined surface that inclines from the plate-shaped base material 11 toward the protruding portion 13, and the angles θ1, θ2 between the inclined surface and the front surface 15 or the back surface 16 of the plate-shaped base material 11 are 20 degrees or more and 85 degrees or less. If the angles θ1, θ2 between the inclined surface and the front surface 15 or the back surface 16 of the plate-shaped base material 11 are 20 degrees or more and 85 degrees or less, damage to the plate-shaped base material 11 due to chipping that occurs during reassembly or transportation can be avoided (see FIG. 14).

ここで、接続部14の傾斜面は、直線状だけでなく、曲線状であってもよく、例えば図4(a)、(b)に示すような変形例が挙げられる。さらに、接続部14の傾斜面の形状は、これらに限定されるものではなく、プレス加工可能な形状であればよい。Here, the inclined surface of the connection portion 14 may be not only linear but also curved, for example, as shown in Fig. 4 (a) and (b). Furthermore, the shape of the inclined surface of the connection portion 14 is not limited to these, and may be any shape that can be pressed.

また、図1に示すように、板状焼成治具10の角部17は、角Rが形成されている。板状焼成治具10の角部に角Rが形成されていることにより、角部17におけるチッピング耐性が向上する。1, the corners 17 of the plate-shaped baking jig 10 are rounded. By forming the corners of the plate-shaped baking jig 10 with the rounded corners, the chipping resistance of the corners 17 is improved.

上述した構成を有する板状焼成治具10は、粉状、または粘土状の耐火物を図示しない金型に流し込んで加圧する、いわゆるプレス成型によって形成される。耐火物は、例えばアルミナ、ムライト、ジルコニア、コージュライト、スピネル、炭化ケイ素、窒素ケイ素、及びそれらの混合物等であり、例えば1,500℃以上の高温に耐えることが可能な素材であればよい。The plate-shaped firing jig 10 having the above-mentioned configuration is formed by so-called press molding, in which a powdery or clay-like refractory material is poured into a die (not shown) and pressurized. The refractory material may be, for example, alumina, mullite, zirconia, cordierite, spinel, silicon carbide, silicon nitride, or a mixture thereof, and may be any material capable of withstanding high temperatures of, for example, 1,500° C. or higher.

次に、本発明に係る第2実施形態の板状焼成治具10Aを、添付図面に基づいて、以下説明する。図5は、本発明に係る第2実施形態の板状焼成治具10Aの平面図である。なお、第1実施形態の板状焼成治具10と同一の構成要素には同一の符号を付し、適宜説明を省略する。Next, a plate-shaped baking jig 10A according to a second embodiment of the present invention will be described below with reference to the accompanying drawings. Fig. 5 is a plan view of the plate-shaped baking jig 10A according to the second embodiment of the present invention. Note that the same components as those of the plate-shaped baking jig 10 according to the first embodiment are given the same reference numerals, and the description thereof will be omitted as appropriate.

第2実施形態の板状焼成治具10Aは、板状母材11Aと、板状母材11Aの外周部12から外側に向かって突出する突出部13と、板状母材11Aと突出部13とを接続する接続部14とを有するとともに、板状母材11Aに、中空部40を有し、中空部40の内周部41から内側に向かって突出する中空突出部42が形成されている。The plate-shaped sintering jig 10A of the second embodiment has a plate-shaped base material 11A, a protrusion 13 protruding outward from the outer periphery 12 of the plate-shaped base material 11A, and a connection portion 14 connecting the plate-shaped base material 11A and the protrusion 13. The plate-shaped base material 11A has a hollow portion 40, and a hollow protrusion 42 protruding inward from the inner periphery 41 of the hollow portion 40 is formed.

中空突出部42は、中空部40の内周部41から内側に向かって突出するように形成されている。ここで、中空突出部42は、内周部41の全辺長の50%以上100%以下の範囲で設けられている。中空突出部42が内周部41の全辺長の50%以上100%以下の範囲で設けられていることにより、組み換え作業や、運搬作業の際に生じるチッピングから、板状母材11の破損を回避することができる(図14を参照)。また、中空突出部42は、内周部41の全辺長の60%以上であると好ましく、さらに75%以上であるとより好ましい。The hollow protrusion 42 is formed so as to protrude inward from the inner peripheral portion 41 of the hollow portion 40. Here, the hollow protrusion 42 is provided in a range of 50% to 100% of the total side length of the inner peripheral portion 41. By providing the hollow protrusion 42 in a range of 50% to 100% of the total side length of the inner peripheral portion 41, damage to the plate-shaped base material 11 due to chipping occurring during reassembly or transportation can be avoided (see FIG. 14). In addition, the hollow protrusion 42 is preferably 60% or more of the total side length of the inner peripheral portion 41, and more preferably 75% or more.

また、図6に示すように、中空突出部42の厚み寸法t2は、板状母材11の厚み寸法Tに対して、10%以上95%以下であると好ましい。中空突出部42の厚み寸法t2が板状母材11の厚み寸法Tに対して、10%以上95%以下であれば、組み換え作業や、運搬作業の際に生じるチッピングから、板状母材11の破損を回避することができる(図14を参照)。6, the thickness dimension t2 of the hollow protrusion 42 is preferably 10% to 95% of the thickness dimension T of the plate-shaped base material 11. If the thickness dimension t2 of the hollow protrusion 42 is 10% to 95% of the thickness dimension T of the plate-shaped base material 11, damage to the plate-shaped base material 11 due to chipping occurring during reassembly or transportation can be avoided (see FIG. 14).

さらに、内周部41と中空突出部42とを接続する中空接続部43が形成されている。中空接続部43の幅寸法W2は、中空突出部43の幅寸法w2に対して、10%以上200%以下であると好ましい。中空接続部43の幅寸法W2は、中空突出部43の幅寸法w2に対して、10%以上200%以下であれば、組み換え作業や、運搬作業の際に生じるチッピングから、板状母材11の破損を回避することができる(図14を参照)。Furthermore, a hollow connection portion 43 is formed to connect the inner periphery 41 and the hollow protrusion 42. The width dimension W2 of the hollow connection portion 43 is preferably 10% to 200% of the width dimension w2 of the hollow protrusion 43. If the width dimension W2 of the hollow connection portion 43 is 10% to 200% of the width dimension w2 of the hollow protrusion 43, damage to the plate-shaped base material 11 due to chipping occurring during reassembly or transportation can be avoided (see FIG. 14).

また、図7に示すように、中空接続部43は、内周部41から中空突出部42に向かって傾斜する傾斜面を有しており、当該傾斜面と板状母材11の表面15、又は裏面16とのなす角度θ3、θ4が、20度以上85度以下である。当該傾斜面と板状母材11の表面15、又は裏面16とのなす角度θ3、θ4が20度以上85度以下であれば、組み換え作業や、運搬作業の際に生じるチッピングから、板状母材11の破損を回避することができる(図14を参照)。ここで、中空接続部43の傾斜面は、直線状だけでなく、曲線状であってもよい。7, the hollow connection part 43 has an inclined surface that inclines from the inner periphery 41 toward the hollow protruding part 42, and the angle θ3, θ4 between the inclined surface and the front surface 15 or the back surface 16 of the plate-shaped base material 11 is 20 degrees or more and 85 degrees or less. If the angle θ3, θ4 between the inclined surface and the front surface 15 or the back surface 16 of the plate-shaped base material 11 is 20 degrees or more and 85 degrees or less, damage to the plate-shaped base material 11 due to chipping that occurs during reassembly or transportation can be avoided (see FIG. 14). Here, the inclined surface of the hollow connection part 43 may be not only linear but also curved.

第2実施形態の板状焼成治具10Aは、中空部40が設けられていることにより、板状焼成治具10Aを軽量化することができる。また、中空部40が設けられていることにより、焼成炉内の熱風が被焼成物Xの下面側に到達しやすくなることから、被焼成物Xの焼成がより一層効率よく実施することができる。The plate-shaped baking jig 10A of the second embodiment can be made lighter by providing the hollow portion 40. In addition, by providing the hollow portion 40, the hot air in the baking furnace can easily reach the lower surface side of the baking object X, so that the baking of the baking object X can be performed more efficiently.

なお、図5に示す中空部40は貫通した形状であるが、貫通ではなく、中空部分に相当する箇所が薄肉した形状としてもよいし、貫通した部分と薄肉化した部分との両方を含む形状であってもよい。Although the hollow portion 40 shown in FIG. 5 has a through-hole shape, it may have a shape in which the portion corresponding to the hollow portion is thin-walled, or it may have a shape that includes both a through-hole portion and a thin-walled portion.

また、本発明に係る第3実施形態の板状焼成治具10Bを、添付図面に基づいて、以下説明する。図8(a)は本発明に係る第3実施形態の板状焼成治具10Bの平面図であり、(b)は(a)の正面図である。なお、第1実施形態の板状焼成治具10と同一の構成要素には同一の符号を付し、適宜説明を省略する。A plate-shaped baking jig 10B according to a third embodiment of the present invention will be described below with reference to the accompanying drawings. Fig. 8(a) is a plan view of the plate-shaped baking jig 10B according to the third embodiment of the present invention, and (b) is a front view of (a). The same components as those of the plate-shaped baking jig 10 according to the first embodiment are given the same reference numerals, and the description will be omitted as appropriate.

第3実施形態の板状焼成治具10Bは、板状母材11Bと、板状母材11Bの外周部12から外側に向かって突出する突出部13と、板状母材11Bと突出部13とを接続する接続部14とを有するとともに、板状母材11Bは、スリット部50を有し、スリット部50を形成する板状母材11Bのスリット内周部51から相互に向かって突出するスリッ
ト突出部52が形成される。
The plate-shaped firing jig 10B of the third embodiment has a plate-shaped base material 11B, a protrusion 13 protruding outward from the outer periphery 12 of the plate-shaped base material 11B, and a connection portion 14 connecting the plate-shaped base material 11B and the protrusion 13, and the plate-shaped base material 11B has a slit portion 50, and slit protrusion portions 52 are formed which protrude toward each other from a slit inner periphery 51 of the plate-shaped base material 11B which forms the slit portion 50.

スリット突出部52は、スリット部50を形成する板状母材11Bのスリット内周部5
1から相互に向かって突出しており、スリット突出部52同士が対向するように形成されている。また、スリット内周部51とスリット突出部52とを接続するスリット接続部53が形成されている。
The slit protrusion 52 is formed on the inner peripheral portion 5 of the slit of the plate-shaped base material 11B forming the slit portion 50.
1, the slit protruding portions 52 are formed so as to face each other. Also, a slit connecting portion 53 is formed to connect the slit inner periphery portion 51 and the slit protruding portion 52.

図9に示すように、スリット部50のスリット幅寸法Wsは、スリット突出部52の幅寸法wsに対して、5%以上1,000%以下である。スリット部50のスリット幅寸法Wsは、スリット突出部52の幅寸法wsに対して、5%以上1,000%以下であれば、組み換え作業や、運搬作業の際に生じるチッピングから、板状母材11の破損を回避することができる(図14を参照)。9, the slit width dimension Ws of the slit portion 50 is 5% to 1,000% of the width dimension ws of the slit protruding portion 52. If the slit width dimension Ws of the slit portion 50 is 5% to 1,000% of the width dimension ws of the slit protruding portion 52, damage to the plate-shaped base material 11 due to chipping occurring during reassembly or transportation can be avoided (see FIG. 14).

第3実施形態の板状焼成治具10Bは、スリット部50にスリット突出部52が形成されていることにより、焼成炉内での焼成工程時に生じる熱膨張を要因とする、チッピングを防止し、板状母材11Bのひび割れ等の破損を抑制することができる。The plate-shaped firing jig 10B of the third embodiment has a slit protrusion 52 formed in the slit portion 50, which prevents chipping caused by thermal expansion that occurs during the firing process in a firing furnace and suppresses damage such as cracks in the plate-shaped base material 11B.

さらに、本発明に係る第4実施形態の板状焼成治具10Cを、添付図面に基づいて、以下説明する。図10は、本発明に係る第4実施形態の板状焼成治具の平面図である。なお、第1実施形態の板状焼成治具10、第2実施形態の板状焼成治具10A、及び第3実施形態の板状焼成治具10Bと同一の構成要素には同一の符号を付し、適宜説明を省略する。Further, a plate-shaped baking jig 10C according to a fourth embodiment of the present invention will be described below with reference to the accompanying drawings. Fig. 10 is a plan view of the plate-shaped baking jig according to the fourth embodiment of the present invention. Note that the same components as those of the plate-shaped baking jig 10 of the first embodiment, the plate-shaped baking jig 10A of the second embodiment, and the plate-shaped baking jig 10B of the third embodiment are given the same reference numerals, and the description thereof will be omitted as appropriate.

第4実施形態の板状焼成治具10Cは、板状母材11Cと、板状母材11Cの外周部12から外側に向かって突出する突出部13と、板状母材11Cと突出部13とを接続する接続部14とを有するとともに、板状母材11Cに、中空部40を有し、中空部40の内周部41から内側に向かって突出する中空突出部42が形成され、またスリット部50を有し、板状母材11Cのスリット内周部51から相互に向かって突出するスリット突出部
52が形成される。
The plate-shaped firing jig 10C of the fourth embodiment has a plate-shaped base material 11C, a protrusion 13 protruding outward from the outer periphery 12 of the plate-shaped base material 11C, and a connection portion 14 connecting the plate-shaped base material 11C and the protrusion 13. The plate-shaped base material 11C has a hollow portion 40, and a hollow protrusion 42 protruding inward from an inner periphery 41 of the hollow portion 40 is formed, and also has a slit portion 50, and slit protrusions 52 protruding toward each other from the slit inner periphery 51 of the plate-shaped base material 11C are formed.

第4実施形態の板状焼成治具10Cは、中空部40が設けられていることにより、板状焼成治具10Aを軽量化することができる。また、後述するように、焼成炉内の熱風が被焼成物Xの下面側に到達しやすくなることから、被焼成物Xの焼成がより一層効率よく実施することができる。さらに、第4実施形態の板状焼成治具10Cは、スリット部50にスリット突出部52が形成されていることにより、焼成炉内での焼成工程時に生じる熱膨張を要因とする、スリット部50内のチッピングによる板状母材11Bの破損を抑制することができる。The plate-shaped baking jig 10C of the fourth embodiment is provided with a hollow portion 40, which allows the plate-shaped baking jig 10A to be made lighter. As described below, the hot air in the baking furnace can easily reach the lower surface side of the baked object X, so that the baking of the baked object X can be performed more efficiently. Furthermore, the plate-shaped baking jig 10C of the fourth embodiment has a slit protrusion 52 formed in the slit portion 50, which can suppress damage to the plate-shaped base material 11B due to chipping in the slit portion 50 caused by thermal expansion during the baking process in the baking furnace.

上述した第1~第4実施形態の板状焼成治具10、10A、10B、及び10Cは、以下のように被焼成物Xが載置されて、焼成工程が実施される。なお、第1実施形態の板状焼成治具10について説明するが、第2~第4実施形態の板状焼成治具10A、10B、及び10Cも同様であるため、説明は省略する。The plate-shaped baking jigs 10, 10A, 10B, and 10C of the first to fourth embodiments described above are used to place the baking object X thereon and carry out the baking process as follows. Note that the plate-shaped baking jig 10 of the first embodiment will be described, but the plate-shaped baking jigs 10A, 10B, and 10C of the second to fourth embodiments are similar, so their description will be omitted.

図11に示すように、第1実施形態の板状焼成治具10の板状母材11の表面15にセッター20が載置され、そのセッター20の上面21に被焼成物Xが載置された状態で、焼成炉内の炉床100上に配置されて、被焼成物Xが焼成される。ここで、セッター20は、平面視において略矩形状に形成されるとともに、板状母材11の厚さ寸法Tよりも薄い薄板状である。As shown in Fig. 11, a setter 20 is placed on the surface 15 of the plate-shaped base material 11 of the plate-shaped firing jig 10 of the first embodiment, and the firing object X is placed on the upper surface 21 of the setter 20, which is then placed on a hearth 100 in a firing furnace, and the firing object X is fired. Here, the setter 20 is formed in a substantially rectangular shape in a plan view, and is a thin plate that is thinner than the thickness dimension T of the plate-shaped base material 11.

また、セッター20は、通気性が高い耐火物から形成される。セッター20が高い通気性を有することにより、焼成炉内の熱風が、セッター20を通過して被焼成物Xの下面側に到達しやすくなり、被焼成物Xの焼成を効率よく実施することができる。通気性が高い耐火物としては、多くの気孔が形成された多孔質板状がある。The setter 20 is made of a refractory material with high air permeability. The setter 20 has high air permeability, so that hot air in the firing furnace can easily pass through the setter 20 and reach the lower surface side of the fired object X, and the fired object X can be fired efficiently. An example of a refractory material with high air permeability is a porous plate having many pores.

ここで、第2、4の実施形態の板状焼成治具10A、Cのように、中空部41が形成されている場合、焼成炉内の熱風が、セッター20を通過して被焼成物Xの下面側により到達しやすくなることから、被焼成物Xの焼成がより一層効率よく実施することができる。Here, when a hollow portion 41 is formed, as in the plate-shaped firing jigs 10A and 10C of the second and fourth embodiments, the hot air in the firing furnace can more easily pass through the setter 20 and reach the underside of the fired object X, so that the firing of the fired object X can be carried out even more efficiently.

また、図12に示すように、板状焼成治具10を焼成炉内の炉床100上に配置し、被焼成物Xが載置された、複数のセッター20の間に、ブロック状の支持部材30を配置させて、複数段積層させた状態とすることができる。このように複数段積層させた状態とすることにより、一段の場合より、多くの被焼成物Xを一度に焼成させることができる。さらに、図13に示すように、セッター20の代わりに、板状焼成治具10を複数段積層することも可能である。Also, as shown in Fig. 12, the plate-shaped firing jig 10 is placed on the hearth 100 in the firing furnace, and a block-shaped support member 30 is placed between a plurality of setters 20 on which the objects to be fired X are placed, resulting in a state in which the plate-shaped firing jig 10 is stacked in multiple stages. By stacking in multiple stages in this manner, more objects to be fired X can be fired at once than in the case of a single stage. Furthermore, as shown in Fig. 13, instead of the setters 20, it is also possible to stack the plate-shaped firing jigs 10 in multiple stages.

上述した本実施形態の板状焼成治具10に関し、実施例1~20に係る板状焼成治具、及び比較例1、2に係る板状焼成治具について、熱衝撃試験、摺動試験、及びプレス金型破損試験を行った。実施例1~20、及び比較例1、2の構成、及び各試験結果は、図14に示した通りである。Regarding the plate-shaped baking jig 10 of the present embodiment described above, a thermal shock test, a sliding test, and a press die damage test were performed on the plate-shaped baking jig according to Examples 1 to 20 and the plate-shaped baking jig according to Comparative Examples 1 and 2. The configurations of Examples 1 to 20 and Comparative Examples 1 and 2, and the test results are as shown in FIG.

実施例1~20、比較例1、2に係る板状焼成治具は、粗粒ムライト(平均粒径:約200μm)、微粒ムライト(平均粒径D50:3μm)の原料粉末と有機バインダー(メ
チルセルロース等)を、AlO:80質量%、SiO:20質量%となるように、高速ミキサーを用いて撹拌混合し、撹拌混合物を生成した。このようにして得られた撹拌混合物を、一軸加圧プレス成形することにより、図14に示すような形状からなる成形体を得た(図10を参照)。そして、これらの成形体を、大気雰囲気下で焼成し(到達温度:1700℃)、焼結体を得ることによって、実施例1~20、及び比較例1、2に係る板状焼成治具を作製した。なお、図14中の実施例9の「中空部薄肉化」が「あり」とは、中空部が貫通孔ではなく、板状母材11の裏面16から観察した場合、薄肉状の凹型状部を有していることを示す。また、比較例1は、板状母材11の外周部に突出部13、接続部14が形成されていない形状である。さらに、比較例2は、板状母材11の外周部に接続部14が形成されておらず、板状母材11に直接突出部13が形成された形状である。
For the plate-shaped firing jigs according to Examples 1 to 20 and Comparative Examples 1 and 2, raw material powders of coarse-grained mullite (average particle size: about 200 μm) and fine-grained mullite (average particle size D 50 : 3 μm) and an organic binder (methylcellulose, etc.) were stirred and mixed using a high-speed mixer so that Al 2 O 3 : 80 mass % and SiO 2 : 20 mass % were obtained. The stirred mixture thus obtained was subjected to uniaxial pressure press molding to obtain a molded body having a shape as shown in FIG. 14 (see FIG. 10). These molded bodies were then fired in an air atmosphere (attained temperature: 1700° C.) to obtain a sintered body, thereby producing the plate-shaped firing jigs according to Examples 1 to 20 and Comparative Examples 1 and 2. In addition, the "thinning of the hollow portion" in Example 9 in FIG. 14 indicates that the hollow portion is not a through hole, but has a thin-walled concave portion when observed from the back surface 16 of the plate-shaped base material 11. In addition, Comparative Example 1 has a shape in which no protrusions 13 and no connection parts 14 are formed on the outer periphery of the plate-shaped base material 11. Furthermore, Comparative Example 2 has a shape in which no connection parts 14 are formed on the outer periphery of the plate-shaped base material 11, and the protrusions 13 are formed directly on the plate-shaped base material 11.

〈熱衝撃試験〉
熱衝撃試験は、板状焼成治具が加熱及び急冷を繰り返した際に生じる亀裂の伸びやすさを評価する試験であって、次のように試験を行った。具体的には、(1)試験体である板状焼成治具(200mm×200mm×図14に示す各母材厚さ)の上下面の面中央にダミーブロック(100mm×100mm×50mm)が配置された状態で、電気炉内に載置し、1,100℃まで加熱したまま、1時間保持する。(2)ダミーブロックが配置された状態のまま電気炉外へ取り出した後、常温まで空冷する際、試験体の突出部13における端部に生じる亀裂を確認する。ここで、ダミーブロックは、セラミックス製であり、試験体を電気炉内外へ移動させる際、試験体が電気炉の出入口や壁面に接触して破損することを防止する。また、当該亀裂の観察は目視にて、亀裂長の測定は、ひび割れ測定用スケールやゲージにより行った。上記(1)から(2)までの工程を1回とし、試験体の突出部13における端部に生じた最大亀裂長が、当該端部から30mmに達するまでに上記(1)及び(2)の工程を繰り返した回数(表1中の「回数」)によって、点数付けし、6点~10点に該当するものは当該端部に生じた亀裂が非常に伸びにくいとしてA(良)と評価し、3点~5点に該当するものは当該端部に生じた亀裂が伸びにくいとしてB(可)と評価し、1点~2点に該当するものは当該端部に生じた亀裂が伸びやすいとしてC(不可)と評価した。
Thermal shock test
The thermal shock test is a test to evaluate the ease of crack extension that occurs when the plate-shaped firing jig is repeatedly heated and cooled, and was performed as follows. Specifically, (1) a dummy block (100 mm x 100 mm x 50 mm) is placed in the center of the upper and lower surfaces of the plate-shaped firing jig (200 mm x 200 mm x each base material thickness shown in Figure 14), which is a test specimen, and placed in an electric furnace, heated to 1,100 ° C., and held for one hour. (2) After removing the dummy block from the electric furnace, the test specimen is air-cooled to room temperature, and cracks that occur at the end of the protruding portion 13 of the test specimen are confirmed. Here, the dummy block is made of ceramics, and prevents the test specimen from coming into contact with the entrance and exit of the electric furnace or the wall surface and being damaged when moving the test specimen in and out of the electric furnace. The cracks were observed visually, and the crack length was measured using a crack measurement scale or gauge. The above steps from (1) to (2) were counted as one cycle, and a score was assigned based on the number of times ("number of times" in Table 1) that the above steps (1) and (2) were repeated until the maximum crack length that occurred at the end of the protrusion 13 of the test specimen reached 30 mm from the end. Test pieces that received 6 to 10 points were rated as A (good), as the crack that occurred at the end was very difficult to grow, test pieces that received 3 to 5 points were rated as B (fair), as the crack that occurred at the end was difficult to grow, and test pieces that received 1 to 2 points were rated as C (unacceptable), as the crack that occurred at the end was easy to grow.

Figure 0007545476000001
Figure 0007545476000001

〈摺動試験〉
摺動試験は、板状焼成治具を任意の方向に移動させた場合の欠けやすさを評価する試験であって、次のように試験を行った。具体的には、(a)試験体である板状焼成治具(200mm×200mm×図14に示す各母材厚さ)が、例えば板状焼成治具10の裏面16が底面となるように載置された状態で、板状焼成治具10の表面15上に所定重量の重しを配置し、試験体の総重量が10kg重となるように調節した。そして、当該試験体を摺動試験機にセットし、水平方向に、摺動速度100mm/secで、当該試験体と同素材の煉瓦上を前後方向に所定の摺動距離(500mm×40回=20m)を摺動させた。次に、(b)当該試験体を、当該試験体と同素材の煉瓦上で、例えば板状焼成治具10の外周部12に設けられた突出部13が底面となるように90度立ち上げ、その後板状焼成治具10の裏面16が底面となる状態に戻す動作、いわゆる立ち上げ・立ち下げ動作を10往復繰り返し、試験体の突出部13における端部に生じた亀裂及び欠けを確認し、当該端部に生じた亀裂及び欠けの最大値が10mm以上であるかを確認した。ここで、立ち上げ・立ち下げ動作は、10往復終了するまで連続して行った。さらに、立ち上げ・立ち下げ動作10往復を1セットとし、1セット毎に10分間以上の休止時間を設けた。この立ち上げ・立ち下げ動作の最中、突出部13、及び裏面16に対して、落下による衝撃を与えないように行った。さらに、当該亀裂及び欠けの測定は、ひび割れ測定用スケールやゲージを用いて目視により行った。試験体の突出部13における端部に生じた亀裂及び欠けの内、当該端部に生じた亀裂及び欠けの最大値が10mm以上に達するまでに上記(a)及び(b)の工程を繰り返したセット数(表2を参照)によって、点数付けし、6点~10点に該当するものは当該端部に亀裂及び欠けが非常に生じにくいとしてA(良)と評価し、3点~5点に該当するものは当該端部に亀裂及び欠けが生じにくいとしてB(可)と評価し、1点~2点に該当するものは当該端部に亀裂及び欠けが生じやすいとしてC(不可)と評価した。
<Sliding test>
The sliding test was a test to evaluate the chipping tendency when the plate-shaped firing jig was moved in an arbitrary direction, and was performed as follows. Specifically, (a) a plate-shaped firing jig (200 mm x 200 mm x thickness of each base material shown in Fig. 14) as a test specimen was placed, for example, with the back surface 16 of the plate-shaped firing jig 10 as the bottom surface, and a weight of a predetermined weight was placed on the front surface 15 of the plate-shaped firing jig 10, and the total weight of the test specimen was adjusted to 10 kg. Then, the test specimen was set in a sliding tester and slid horizontally in the front-rear direction on a brick made of the same material as the test specimen at a sliding speed of 100 mm/sec for a predetermined sliding distance (500 mm x 40 times = 20 m). Next, (b) the test specimen was raised 90 degrees on a brick made of the same material as the test specimen, for example, so that the protruding portion 13 provided on the outer periphery 12 of the plate-shaped firing jig 10 was the bottom surface, and then the plate-shaped firing jig 10 was returned to the bottom surface with the back surface 16, i.e., the so-called raising and lowering operation was repeated 10 times, and cracks and chips occurred at the end of the protruding portion 13 of the test specimen were confirmed, and it was confirmed whether the maximum value of the cracks and chips occurred at the end was 10 mm or more. Here, the raising and lowering operation was performed continuously until the end of 10 round trips. Furthermore, 10 round trips of the raising and lowering operation were set as one set, and a rest time of 10 minutes or more was provided for each set. During this raising and lowering operation, the protruding portion 13 and the back surface 16 were not subjected to impact due to dropping. Furthermore, the cracks and chips were measured visually using a crack measurement scale or gauge. Among the cracks and chips that occurred at the end of the protrusion 13 of the test specimen, a score was assigned based on the number of sets (see Table 2) in which the above steps (a) and (b) were repeated until the maximum size of the cracks and chips that occurred at the end reached 10 mm or more. Those that received 6 to 10 points were rated as A (good), as it was very unlikely for cracks and chips to occur at the end, those that received 3 to 5 points were rated as B (fair), as it was unlikely for cracks and chips to occur at the end, and those that received 1 to 2 points were rated as C (unacceptable), as it was likely for cracks and chips to occur at the end.

Figure 0007545476000002
Figure 0007545476000002

〈プレス金型破損試験〉
プレス金型破損試験は、板状焼成治具に対して、プレス加工を繰り返したプレス金型に生じた破損状況を評価する試験であって、次のように試験を行った。具体的には、試験体である板状焼成治具(200mm×200mm×図14に示す各母材厚さ)に対して、プレス金型を試験体の上下から当接させ、5秒間かけて成形圧100MPaに達するまで加圧し、その成形圧100MPaにて5秒間保持した後、3秒間かけて減圧する工程を所定回数(例えば、100回)繰り返した。その後、プレス金型を試験体から離間させた後、プレス金型の破損状況を確認した。ここで、プレス金型の例えば端部に、最大長10mm以上の亀裂及び欠けを確認した場合、プレス金型の破損であると判定した。当該亀裂及び欠けの測定は、ひび割れ測定用スケールやゲージを用いて目視により行った。また、上記工程を100回繰り返すまで連続して行った。さらに、上述工程100回を1セットとし、1セット毎に10分間以上の休止時間を設けた。そして、プレス金型に破損が生じるまで繰り返したセット数(表3を参照)によって、点数付けし、6点~10点に該当するものはプレス金型が非常に破損しにくいとしてA(良)と評価し、3点~5点に該当するものはプレス金型が破損しにくいとしてB(可)と評価し、1点~2点に該当するものはプレス金型が破損しやすいとしてC(不可)と評価した。
<Press die damage test>
The press die damage test is a test to evaluate the damage caused to the press die which has been repeatedly pressed against the plate-shaped sintering jig, and was performed as follows. Specifically, the press die was abutted against the plate-shaped sintering jig (200 mm x 200 mm x each base material thickness shown in FIG. 14) as the test body from above and below, and the press die was pressed for 5 seconds until the molding pressure reached 100 MPa, and the molding pressure was held at 100 MPa for 5 seconds, and then the pressure was reduced for 3 seconds. This process was repeated a predetermined number of times (for example, 100 times). After that, the press die was separated from the test body, and the damage state of the press die was confirmed. Here, when cracks and chips with a maximum length of 10 mm or more were confirmed, for example, at the end of the press die, it was determined that the press die was damaged. The cracks and chips were measured visually using a crack measurement scale or gauge. In addition, the above process was continuously performed until it was repeated 100 times. Furthermore, 100 times of the above process was considered as one set, and a rest time of 10 minutes or more was provided for each set. A score was then assigned based on the number of sets repeated until the press die was damaged (see Table 3). A score of 6 to 10 points was evaluated as A (good), indicating that the press die was very unlikely to be damaged, a score of 3 to 5 points was evaluated as B (fair), and a score of 1 to 2 points was evaluated as that the press die was prone to damage, and a score of C (unacceptable).

Figure 0007545476000003
Figure 0007545476000003

本明細書開示の発明は、各発明や実施形態の構成の他に、適用可能な範囲で、これらの部分的な構成を本明細書開示の他の構成に変更して特定したもの、或いはこれらの構成に本明細書開示の他の構成を付加して特定したもの、或いはこれらの部分的な構成を部分的な作用効果が得られる限度で削除して特定した上位概念化したものを含む。The inventions disclosed in this specification include, in addition to the configurations of each invention or embodiment, those that are specified by changing these partial configurations to other configurations disclosed in this specification, to the extent applicable, or those that are specified by adding other configurations disclosed in this specification to these configurations, or those that are specified as higher-level concepts by deleting these partial configurations to the extent that partial action and effects are obtained.

本発明の第1~第4実施形態の板状焼成治具10、10A、10B、及び10Cの板状母材11、11A、11B、及び11Cは平板状であるが、板状母材11、11A、11B、及び11Cの裏面16から、鉛直方向に突出する支持部(図示しない)を設け、また板状母材11、11A、11B、及び11Cの表面15に、鉛直方向に当該支持部を受けることが可能な位置に凹部状の受け部(図示しない)を設けてもよい。支持部(図示しない)と、受け部(図示しない)とを設けることにより、図13のように、ブロック状の支持部材30を複数の板状焼成治具10の間に配置させることなく、複数段積層させることができる。The plate-shaped base materials 11, 11A, 11B, and 11C of the plate-shaped firing jigs 10, 10A, 10B, and 10C of the first to fourth embodiments of the present invention are flat, but a support portion (not shown) protruding vertically from the back surface 16 of the plate-shaped base materials 11, 11A, 11B, and 11C may be provided, and a recessed receiving portion (not shown) may be provided on the front surface 15 of the plate-shaped base materials 11, 11A, 11B, and 11C at a position that can receive the support portion in the vertical direction. By providing the support portion (not shown) and the receiving portion (not shown), as shown in FIG. 13, the block-shaped support member 30 can be stacked in multiple stages without being placed between multiple plate-shaped firing jigs 10.

10、10A、10B、10C…板状焼成治具
11、11A、11B、11C…板状母材
12…外周部
13…突出部
14…接続部
15…表面
16…裏面
17…角部
20…セッター
30…支持部材
40…中空部
41…内周部
42…中空突出部
43…中空接続部
50…スリット部
51…スリット内周部
52…スリット突出部
53…スリット接続部
100…炉床
X…被焼成物
Reference Signs List 10, 10A, 10B, 10C... Plate-shaped firing jig 11, 11A, 11B, 11C... Plate-shaped base material 12... Outer periphery 13... Protruding portion 14... Connection portion 15... Front surface 16... Back surface 17... Corner portion 20... Setter 30... Support member 40... Hollow portion 41... Inner periphery 42... Hollow protruding portion 43... Hollow connection portion 50... Slit portion 51... Slit inner periphery 52... Slit protruding portion 53... Slit connection portion 100... Hearth X... Material to be fired

Claims (9)

板状母材と、
前記板状母材の外周部から外側に向かって突出する突出部と、
前記板状母材と前記突出部とを接続する接続部と、
を有し、
前記板状母材の表面に連なる前記接続部の表面、及び前記接続部の前記表面に連なる前記突出部の表面は、前記板状母材の前記表面に対する角度が互いに異なることを特徴とする板状焼成治具。
A plate-shaped base material;
a protruding portion protruding outward from an outer periphery of the plate-shaped base material;
a connection portion that connects the plate-shaped base material and the protrusion;
having
A plate-shaped firing jig, characterized in that the surface of the connection portion connected to the surface of the plate-shaped base material and the surface of the protrusion portion connected to the surface of the connection portion have mutually different angles relative to the surface of the plate-shaped base material .
前記突出部が、前記板状母材の外周部の全辺長の50%以上100%以下の範囲で設けられていることを特徴とする請求項1に記載の板状焼成治具。 The plate-shaped firing jig according to claim 1, characterized in that the protrusions are provided in a range of 50% to 100% of the total side length of the outer periphery of the plate-shaped base material. 前記突出部の厚み寸法は、前記板状母材の厚み寸法に対して、10%以上95%以下であることを特徴とする請求項1、又は2に記載の板状焼成治具。 The plate-shaped firing jig according to claim 1 or 2, characterized in that the thickness dimension of the protrusion is 10% or more and 95% or less of the thickness dimension of the plate-shaped base material. 前記接続部の幅寸法は、前記突出部の幅寸法に対して、10%以上200%以下であることを特徴とする請求項1~3の何れか一つに記載の板状焼成治具。 A plate-shaped firing jig according to any one of claims 1 to 3, characterized in that the width dimension of the connection portion is 10% to 200% of the width dimension of the protrusion portion. 前記接続部は、前記板状母材から前記突出部に向かって傾斜する傾斜面を有しており、前記傾斜面と前記板状母材の表面、又は裏面とのなす角度が、20度以上85度以下であることを特徴とする請求項1~4の何れか一つに記載の板状焼成治具。 The plate-shaped firing jig according to any one of claims 1 to 4, characterized in that the connection portion has an inclined surface that slopes from the plate-shaped base material toward the protruding portion, and the angle between the inclined surface and the front or back surface of the plate-shaped base material is 20 degrees or more and 85 degrees or less. 前記突出部は、前記板状母材の表面、及び裏面から薄肉化していることを特徴とする請求項1~5の何れか一つに記載の板状焼成治具。 6. The plate-shaped firing jig according to claim 1, wherein the protrusion is thinned from the front and back surfaces of the plate-shaped base material. 前記板状母材は、中空部を有し、
前記中空部の内周部から内側に向かって突出する中空突出部が形成されることを特徴とする請求項1~6の何れか一つに記載の板状焼成治具。
The plate-shaped base material has a hollow portion,
7. The plate-shaped firing jig according to claim 1, further comprising a hollow protruding portion protruding inward from an inner periphery of the hollow portion.
前記板状母材は、スリット部を有し、
前記スリット部を形成する前記板状母材のスリット内周部から相互に向かって突出するスリット突出部が形成されることを特徴とする請求項1~7の何れか一つに記載の板状焼成治具。
The plate-shaped base material has a slit portion,
8. The plate-shaped firing jig according to claim 1, wherein slit protrusions are formed so as to protrude toward each other from the inner periphery of the slit of the plate-shaped base material forming the slit portion.
前記スリット部のスリット幅寸法は、前記スリット突出部の幅寸法に対して、5%以上
1,000%以下であることを特徴とする請求項8に記載の板状焼成治具。
9. The plate-shaped firing jig according to claim 8, wherein a slit width dimension of the slit portion is 5% to 1,000% of a width dimension of the slit protruding portion.
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000111269A (en) 1998-09-30 2000-04-18 Toshiba Ceramics Co Ltd Tool for burning
JP3187105U (en) 2013-08-30 2013-11-07 日本碍子株式会社 Setter for roller hearth kiln

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* Cited by examiner, † Cited by third party
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JPH0638314Y2 (en) * 1990-01-24 1994-10-05 日本碍子株式会社 Bowl base plate
JPH07243770A (en) * 1994-03-01 1995-09-19 Ngk Insulators Ltd Setter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000111269A (en) 1998-09-30 2000-04-18 Toshiba Ceramics Co Ltd Tool for burning
JP3187105U (en) 2013-08-30 2013-11-07 日本碍子株式会社 Setter for roller hearth kiln

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