WO2022158072A1 - Plate-shaped firing jig - Google Patents

Plate-shaped firing jig Download PDF

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Publication number
WO2022158072A1
WO2022158072A1 PCT/JP2021/039578 JP2021039578W WO2022158072A1 WO 2022158072 A1 WO2022158072 A1 WO 2022158072A1 JP 2021039578 W JP2021039578 W JP 2021039578W WO 2022158072 A1 WO2022158072 A1 WO 2022158072A1
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WIPO (PCT)
Prior art keywords
plate
base material
shaped
firing jig
shaped base
Prior art date
Application number
PCT/JP2021/039578
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French (fr)
Japanese (ja)
Inventor
高文 上野
秀徳 坂本
Original Assignee
三井金属鉱業株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 三井金属鉱業株式会社 filed Critical 三井金属鉱業株式会社
Priority to JP2022536571A priority Critical patent/JPWO2022158072A1/ja
Priority to CN202190000342.7U priority patent/CN219103708U/en
Publication of WO2022158072A1 publication Critical patent/WO2022158072A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/12—Travelling or movable supports or containers for the charge

Definitions

  • the present invention relates to a plate-shaped firing jig on which ceramic products are placed during firing.
  • the process of manufacturing ceramic products includes a firing process in which the object to be fired is fired in a firing furnace.
  • the object to be fired is placed on a firing jig in a firing furnace and fired.
  • the firing jig As the firing jig, a shelf plate on which the object to be fired is placed (see Patent Document 1), a setter for supporting the shelf plate on which the object to be fired is placed (see Patent Document 2), and a brick member is proposed. Also, the firing jig on which the object to be fired is mounted is installed in the firing furnace in a single stage or in a state of being stacked in multiple stages. Then, the fired object to be fired is taken out of the firing furnace.
  • the firing jig is damaged due to chipping of the corners or end faces of the firing jig during the work of recombining the object to be fired or the work of transporting it to the inside or outside of the firing furnace, the firing jig will need to be replaced. , making it difficult to maintain the expected production speed. In addition, it has been one of the factors leading to an increase in manufacturing cost due to replacement of the firing jig.
  • a plate-shaped firing jig according to the present invention which has been devised to solve the above problems, comprises a plate-shaped base material, a projection projecting outward from an outer peripheral portion of the plate-shaped base material, and the plate-shaped base material. It has a connection part which connects with the said protrusion part.
  • the plate-shaped firing jig of the present invention prevents damage to the firing jig due to chipping at the corners and end faces of the firing jig during the work of reassembling the firing jig or the work of transporting it into the kiln. It is possible to avoid, improve the production speed, and reduce the production cost.
  • FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1;
  • FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1, and is an explanatory diagram of the inclined surface angle of the connecting portion;
  • (a) is a front view showing a modification of the plate-shaped firing jig of the first embodiment according to the present invention, and
  • (b) is another modification of the plate-shaped firing jig of the first embodiment according to the invention. It is a front view showing.
  • FIG. 5 is a plan view of a plate-shaped firing jig according to a second embodiment of the present invention
  • FIG. 6 is a cross-sectional view taken along line BB of FIG. 5
  • FIG. 6 is a cross-sectional view taken along the line BB of FIG. 5 and is an explanatory diagram of the inclined surface angle of the hollow connecting portion
  • (a) is a plan view of a plate-shaped firing jig according to a third embodiment of the present invention
  • (b) is a front view of (a).
  • FIG. 9 is a sectional view taken along line CC of FIG. 8;
  • FIG. 5 is a plan view of a plate-shaped firing jig according to a fourth embodiment of the present invention. It is a front view which shows the state which mounted the to-be-sintered material on the plate-shaped baking jig of 1st Embodiment which concerns on this invention.
  • 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. FIG. 5 is a front view of another embodiment showing a state in which plate-shaped firing jigs according to the present invention are stacked.
  • 1 is a table showing test results of Examples 1 to 20 and Comparative Examples 1 and 2 of plate-shaped firing jigs according to the present invention.
  • FIG. 1(a) is a plan view of a plate-shaped firing jig according to a first embodiment of the present invention
  • (b) is a front view of (a).
  • FIG. 2 is an enlarged view of the plate-shaped firing jig of the first embodiment taken along the line A--A of the present invention.
  • the plate-shaped firing jig 10 of the first embodiment includes a plate-shaped base material 11, a protruding portion 13 that protrudes outward from an outer peripheral portion 12 of the plate-shaped base material 11, a plate It has a connecting portion 14 that connects the shaped base material 11 and the projecting portion 13 .
  • the plate-shaped base material 11 is formed in a substantially rectangular shape in a plan view, as shown in FIG. 1(a). Moreover, as shown in FIG.1(b), the plate-shaped base material 11 is plate-shaped.
  • the plate-like base material 11 is not limited to a substantially rectangular shape, and may be polygonal such as square or triangular, or other shapes such as circular or elliptical.
  • the projecting portion 13 is formed to project outward from the outer peripheral portion 12 of the plate-shaped base material 11 .
  • the projecting portion 13 is provided in a range of 50% or more and 100% or less of the total side length of the outer peripheral portion 12 of the plate-shaped base material 11 .
  • the protruding portion 13 is 50% or more and 100% or less of the total side length of the outer peripheral portion 12, for example, when the plate-shaped firing jig 10 is conveyed into the electric furnace, the side of the electric furnace that is likely to come into contact with the side of the electric furnace. It can be provided on the wall surface side, and damage to the plate-like base material 11 can be avoided (see FIG. 14).
  • the protruding portion 13 preferably accounts for 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.
  • the thickness dimension t1 of the projecting portion 13 is 10% or more and 95% or less of the thickness dimension T of the plate-shaped base material 11. If the thickness dimension t1 of the projecting portion 13 is 10% or more of the thickness dimension T of the plate-shaped base material 11, even if there is a difference in the thickness dimension between the projecting portion 13 and the plate-shaped base material 11, there will be no mixing unevenness. does not occur (see FIG. 14). If the thickness t1 of the projecting portion 13 is less than 95% of the thickness T of the plate-shaped base material 11, the plate-shaped base material 11 may be damaged by chipping during recombination work or transportation work. Damage can be avoided.
  • the thickness dimension t1 of the projecting portion 13 is preferably 25% or more and 95% or less, more preferably 50% or more and 95% or less, and 60% or more of the thickness dimension T of the plate-shaped base material 11. It is more preferable that it is 90% or less.
  • the projecting portion 13 is thinned by a predetermined dimension from the front surface 15 and the rear surface 16 of the plate-shaped base material 11 .
  • the projecting portion 13 is thinned by predetermined dimensions d1 and d2 from the front surface 15 and the rear surface 16 of the plate-shaped base material 11 .
  • the connecting portion 14 connects the plate-shaped base material 11 and the projecting portion 13 .
  • the width dimension W1 of the connection portion 14 is 10% or more and 200% or less of the width dimension w1 of the protrusion. If the width dimension W1 of the connection portion 14 is 10% or more and 200% or less of the width dimension w1 of the projecting portion, damage to the plate-shaped base material 11 due to chipping that occurs during recombination work or transportation work is prevented. can be avoided (see Figure 14).
  • the connecting portion 14 has an inclined surface that inclines from the plate-like base material 11 toward the projecting portion 13 , and the inclined surface and the surface 15 or the back surface 16 of the plate-like base material 11 are connected to each other. and the angles ⁇ 1 and ⁇ 2 formed with are 20 degrees or more and 85 degrees or less. If the angles ⁇ 1 and ⁇ 2 formed by 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, the plate-shaped base material 11 is prevented from chipping during recombination work or transportation work. Damage to the material 11 can be avoided (see FIG. 14).
  • the inclined surface of the connecting portion 14 may be not only linear but also curved, and examples thereof include modifications shown in FIGS. Furthermore, the shape of the inclined surface of the connection portion 14 is not limited to these, and any shape that can be pressed can be used.
  • corners 17 of the plate-shaped baking jig 10 are rounded. Since the corners of the plate-shaped baking jig 10 are rounded, the chipping resistance of the corners 17 is improved.
  • the plate-shaped firing jig 10 having the configuration described above is formed by so-called press molding, in which a powdery or clay-like refractory is poured into a mold (not shown) and pressed.
  • the refractories are, for example, alumina, mullite, zirconia, cordierite, spinel, silicon carbide, nitrogen silicon, and mixtures thereof.
  • FIG. 5 is a plan view of a plate-shaped firing jig 10A of a second embodiment according to the present invention.
  • symbol is attached
  • plate-shaped baking jigs of 2nd Embodiment are the plate-shaped base material 11A, the protrusion part 13 which protrudes outward from the outer peripheral part 12 of the plate-shaped base material 11A, and the plate-shaped base material 11A and the protrusion part 13.
  • the plate-shaped base material 11A has a hollow portion 40, and a hollow protruding portion 42 protruding inward from an inner peripheral portion 41 of the hollow portion 40 is formed in the plate-shaped base material 11A. .
  • the hollow protruding portion 42 is formed to protrude inward from the inner peripheral portion 41 of the hollow portion 40 .
  • the hollow projecting portion 42 is provided in a range of 50% or more and 100% or less of the total side length of the inner peripheral portion 41 . Since the hollow protruding part 42 is provided in the range of 50% or more and 100% or less of the total side length of the inner peripheral part 41, the plate-shaped base material 11 is damaged by chipping that occurs during recombination work or transportation work. can be avoided (see FIG. 14).
  • the hollow projecting portion 42 preferably accounts for 60% or more of the total side length of the inner peripheral portion 41, and more preferably 75% or more.
  • the thickness dimension t2 of the hollow projecting portion 42 is preferably 10% or more and 95% or less of the thickness dimension T of the plate-shaped base material 11. If the thickness dimension t2 of the hollow protruding portion 42 is 10% or more and 95% or less of the thickness dimension T of the plate-shaped base material 11, the plate-shaped base material 11 is prevented from being chipped during recombination work or transportation work. damage can be avoided (see FIG. 14).
  • a hollow connecting portion 43 that connects the inner peripheral portion 41 and the hollow projecting portion 42 is formed.
  • the width dimension W2 of the hollow connection portion 43 is preferably 10% or more and 200% or less of the width dimension w2 of the hollow projection portion 43 . If the width dimension W2 of the hollow connecting portion 43 is 10% or more and 200% or less of the width dimension w2 of the hollow projecting portion 43, the plate-shaped base material 11 is prevented from chipping during recombination work or transportation work. damage can be avoided (see FIG. 14).
  • the hollow connecting portion 43 has an inclined surface that inclines from the inner peripheral portion 41 toward the hollow protruding portion 42, and the inclined surface and the surface 15 of the plate-like base material 11 Alternatively, the angles ⁇ 3 and ⁇ 4 formed with the back surface 16 are 20 degrees or more and 85 degrees or less. If the angles ⁇ 3 and ⁇ 4 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, the plate-shaped base material 11 is prevented from chipping during recombination work or transportation work. Damage to the material 11 can be avoided (see FIG. 14).
  • the inclined surface of the hollow connecting portion 43 may be curved as well as linear.
  • the plate-shaped firing jig 10A of the second embodiment is provided with the hollow portion 40, so that the weight of the plate-shaped firing jig 10A can be reduced.
  • the hollow part 40 is provided, the hot air in the firing furnace can easily reach the lower surface side of the object X to be fired, so that the object X to be fired can be fired more efficiently. .
  • the part corresponding to the hollow portion may have a thin shape instead of a penetrating portion, or a shape including both a penetrating portion and a thinned portion. may be
  • FIG. 8(a) is a plan view of a plate-shaped firing jig 10B of a third embodiment according to the present invention
  • (b) is a front view of (a).
  • symbol is attached
  • a plate-shaped firing jig 10B of the third embodiment includes a plate-shaped base material 11B, a projecting portion 13 projecting outward from an outer peripheral portion 12 of the plate-shaped base material 11B, and a plate-shaped base material 11B and the projecting portion 13.
  • the plate-shaped base material 11B has a slit portion 50, and protrudes toward each other from the slit inner peripheral portion 51 of the plate-shaped base material 11B forming the slit portion 50.
  • a slit protrusion 52 is formed.
  • the slit protrusions 52 protrude toward each other from the slit inner periphery 51 of the plate-shaped base material 11B forming the slit 50, and are formed so that the slit protrusions 52 face each other. Also, a slit connection portion 53 that connects the slit inner peripheral portion 51 and the slit projecting portion 52 is formed.
  • the slit width dimension Ws of the slit portion 50 is 5% or more and 1,000% or less of the width dimension ws of the slit projecting portion 52 . If the slit width dimension Ws of the slit portion 50 is 5% or more and 1,000% or less of the width dimension ws of the slit protruding portion 52, chipping that occurs during recombination work or transportation work will occur. Damage to the material 11 can be avoided (see FIG. 14).
  • the slit protruding portions 52 are formed in the slit portions 50 to prevent chipping caused by thermal expansion during the firing process in the firing furnace. Damage such as cracks in the plate-shaped base material 11B can be suppressed.
  • FIG. 10 is a plan view of a plate-shaped firing jig according to a fourth embodiment of the present invention.
  • the same components as those of the plate-shaped firing jig 10 of the first embodiment, the plate-shaped firing jig 10A of the second embodiment, and the plate-shaped firing jig 10B of the third embodiment are denoted by the same reference numerals. description is omitted as appropriate.
  • the plate-shaped base material 11C has a hollow portion 40, and a hollow protruding portion 42 protruding inward from an inner peripheral portion 41 of the hollow portion 40 is formed, and A slit protruding portion 52 having a slit portion 50 and protruding toward each other from a slit inner peripheral portion 51 of the plate-shaped base material 11C is formed.
  • the plate-shaped firing jig 10C of the fourth embodiment is provided with the hollow portion 40, so that the weight of the plate-shaped firing jig 10A can be reduced.
  • the hot air in the firing furnace can easily reach the lower surface side of the object X to be fired, so that the object X to be fired can be fired more efficiently.
  • the slit protruding portion 52 is formed in the slit portion 50, so that the slit portion 50 is prevented from Damage to the plate-like base material 11B due to internal chipping can be suppressed.
  • the firing process is carried out with the object X to be fired placed thereon as follows.
  • the plate-shaped firing jig 10 of the first embodiment will be described, but the same applies to the plate-shaped firing jigs 10A, 10B, and 10C of the second to fourth embodiments, so the description will be omitted.
  • a setter 20 is placed on the surface 15 of the plate-like base material 11 of the plate-like firing jig 10 of the first embodiment, and an object to be fired X is placed on the upper surface 21 of the setter 20.
  • the object X to be fired is placed on the hearth 100 in the firing furnace, and the object X to be fired is fired.
  • the setter 20 is formed in a substantially rectangular shape in plan view, and is a thin plate that is thinner than the thickness dimension T of the plate-like base material 11 .
  • the setter 20 is made of a highly breathable refractory material. Since the setter 20 has high air permeability, the hot air in the firing furnace passes through the setter 20 and easily reaches the lower surface side of the object X to be fired, so that the object X to be fired can be efficiently fired. can. As a refractory with high air permeability, there is a porous plate-like material in which many pores are formed.
  • the hot air in the firing furnace passes through the setter 20 and the object to be fired X Since it becomes easier to reach the lower surface side of the , the baking of the object X to be baked can be carried out more efficiently.
  • a plate-shaped firing jig 10 is arranged on a hearth 100 in a firing furnace, and a block-shaped support is placed between a plurality of setters 20 on which the objects X to be fired are placed.
  • the members 30 can be arranged to form a state in which they are stacked in multiple stages. By stacking multiple layers in this manner, more objects X to be fired can be fired at once than in the case of a single layer.
  • FIG. 13 instead of the setter 20, it is also possible to stack plate-shaped firing jigs 10 in multiple stages.
  • the plate-shaped firing jigs according to Examples 1 to 20 and the plate-shaped firing jigs according to Comparative Examples 1 and 2 were subjected to thermal shock tests, sliding tests, And a press die damage test was performed.
  • the configurations and test results of Examples 1 to 20 and Comparative Examples 1 and 2 are shown in FIG.
  • the plate-shaped firing jigs according to Examples 1 to 20 and Comparative Examples 1 and 2 consist of raw material powders of coarse-grained mullite (average particle size: about 200 ⁇ m) and fine-grained mullite (average particle size D 50 : 3 ⁇ m) and an organic binder ( methyl cellulose, etc.) were stirred and mixed using a high-speed mixer so that Al 2 O 3 : 80% by mass and SiO 2 : 20% by mass, to produce a stirred mixture.
  • 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).
  • Example 9 in FIG. indicates that it has Comparative Example 1 has a shape in which the protruding portion 13 and the connecting portion 14 are not formed on the outer peripheral portion of the plate-shaped base material 11 .
  • Comparative Example 2 has a shape in which the connecting portion 14 is not formed on the outer peripheral portion of the plate-shaped base material 11 and the projecting portion 13 is formed directly on the plate-shaped base material 11 .
  • the thermal shock test is a test for evaluating the susceptibility to elongation of cracks generated when the plate-shaped firing jig is repeatedly heated and rapidly cooled, and the test was conducted as follows. Specifically, (1) a dummy block (100 mm ⁇ 100 mm ⁇ 50 mm) is arranged in the center of the upper and lower surfaces of a plate-shaped firing jig (200 mm ⁇ 200 mm ⁇ thickness of each base material shown in Fig. 14), which is a test piece. In this state, it is placed in an electric furnace and held for 1 hour while being heated to 1,100°C.
  • Scores are given according to the number of times the process is repeated (“Number of times” in Table 1), and those corresponding to 6 to 10 points are evaluated as A (good) because the cracks generated at the end are very difficult to extend. However, those that correspond to 3 to 5 points are evaluated as B (acceptable) because the cracks that occurred at the end are difficult to extend, and those that correspond to 1 to 2 points are those that have cracks at the end. It was evaluated as C (impossible) because it was easy.
  • the sliding test is a test for evaluating the susceptibility to chipping when the plate-shaped firing jig is moved in an arbitrary direction, and was conducted as follows. Specifically, (a) the plate-shaped firing jig (200 mm x 200 mm x thickness of each base material shown in Fig. 14), which is a test piece, is arranged such that the back surface 16 of the plate-shaped firing jig 10 is the bottom surface. A weight of a predetermined weight was placed on the surface 15 of the plate-shaped baking jig 10 in the mounted state, and the total weight of the specimen was adjusted to 10 kg.
  • test piece is placed on a brick made of the same material as the test piece, and is raised at an angle of 90 degrees so that the protruding portion 13 provided on the outer peripheral portion 12 of the plate-shaped firing jig 10 becomes the bottom surface.
  • the rising/falling operation was continuously performed until 10 reciprocations were completed.
  • 10 reciprocations of the start-up and fall-down operations were set as one set, and a rest time of 10 minutes or more was provided for each set. During this rising/falling operation, the protruding portion 13 and the back surface 16 were prevented from being impacted by the drop.
  • the cracks and chips were measured visually using a crack measuring scale or gauge.
  • the above steps (a) and (b) were repeated until the maximum value of cracks and chips generated at the end of the protruding portion 13 of the test piece reached 10 mm or more.
  • Scores are given according to the number of sets (see Table 2), and those corresponding to 6 to 10 points are evaluated as A (good) because cracks and chips are very unlikely to occur at the end, and 3 to 5 points.
  • Those that fall under are evaluated as B (acceptable) because cracks and chips are unlikely to occur at the end, and those that fall under 1 to 2 points are evaluated as C (impossible) because cracks and chips are likely to occur at the end. evaluated.
  • the press die damage test is a test for evaluating the state of damage occurring in the press die after repeated press working with respect to the plate-shaped firing jig, and was conducted as follows. Specifically, the press mold was brought into contact with the plate-shaped firing jig (200 mm ⁇ 200 mm ⁇ thickness of each base material shown in Fig. 14), which is the test body, from the top and bottom of the test body, and the test body was kept for 5 seconds. A step of pressurizing until the molding pressure reaches 100 MPa, holding the molding pressure at 100 MPa for 5 seconds, and then reducing the pressure for 3 seconds was repeated a predetermined number of times (for example, 100 times).
  • the press die was separated from the test piece, and the state of damage to the press die was checked.
  • a crack or chip having a maximum length of 10 mm or more was confirmed at the edge of the press die, for example, it was determined that the press die was damaged.
  • the cracks and chips were measured visually using a crack measuring scale or gauge.
  • the above process was continuously performed until it was repeated 100 times.
  • 100 times of the above-described steps were set as one set, and a rest time of 10 minutes or more was provided for each set.
  • a score is given according to the number of sets repeated until the press die is damaged (see Table 3), and those that correspond to 6 to 10 points are rated A (good) because the press die is very unlikely to be damaged.
  • Those that correspond to 3 to 5 points are evaluated as B (acceptable) because the press mold is difficult to damage, and those that correspond to 1 to 2 points are evaluated as C (easily damaged). not possible).
  • the plate-like base materials 11, 11A, 11B, and 11C of the plate-like firing jigs 10, 10A, 10B, and 10C of the first to fourth embodiments of the present invention are plate-like.
  • Supporting portions (not shown) protruding in the vertical direction are provided from the rear surfaces 16 of the plate-shaped base materials 11, 11B, and 11C, and the supporting portions are provided in the vertical direction on the front surfaces 15 of the plate-shaped base materials 11, 11A, 11B, and 11C.
  • a recessed receiving portion may be provided at a position where it can be received.
  • Reference Signs List 10 10A, 10B, 10C Plate-shaped baking jig 11, 11A, 11B, 11C Plate-shaped base material 12 Peripheral portion 13 Projection portion 14 Connection portion 15 Front surface 16 Back surface 17 Corner portion 20 Setter 30... Supporting member 40... Hollow part 41... Inner peripheral part 42... Hollow protruding part 43... Hollow connecting part 50... Slit part 51... Slit inner peripheral part 52... Slit protruding part 53... Slit connecting part 100... Hearth X... Cover baked goods

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  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
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Abstract

This plate-shaped firing jig has a plate-shaped base material, a protrusion that protrudes outward from the outer periphery of the plate-shaped base material, and a connection portion that connects the plate-shaped base material and the protrusion.

Description

板状焼成治具Plate-shaped firing jig
　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 are placed during firing.
　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。 　Conventionally, the process of manufacturing ceramic products includes a firing process in which the object to be fired is fired in a firing furnace. In the firing process, the object to be fired is placed on a firing jig in a 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 for supporting the shelf plate on which the object to be fired is placed (see Patent Document 2), and a brick member is proposed. Also, the firing jig on which the object to be fired is mounted is installed in the firing furnace in a single stage or in a state of being stacked in multiple stages. Then, the fired object to be fired is taken out of the firing furnace.
特開平８－１６６１９１号公報JP-A-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, if the firing jig is damaged due to chipping of the corners or end faces of the firing jig during the work of recombining the object to be fired or the work of transporting it to the inside or outside of the firing furnace, the firing jig will need to be replaced. , making it difficult to maintain the expected production speed. In addition, it has been one of the factors leading to an increase in manufacturing cost due to replacement of the firing jig.
　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。 SUMMARY OF THE INVENTION In view of the above problems, it is an object of the present invention to provide a plate-shaped firing jig that can maintain the expected manufacturing speed of the firing process and suppress manufacturing 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。 A plate-shaped firing jig according to the present invention, which has been devised to solve the above problems, comprises a plate-shaped base material, a projection projecting outward from an outer peripheral portion of the plate-shaped base material, and the plate-shaped base material. It has a connection part which connects with the said protrusion part.
With this configuration, it is possible to avoid damage to the firing jig due to chipping of the corners and end faces during the work of reassembling the firing jig and the work of transporting it into the kiln, thereby improving the manufacturing speed and manufacturing cost. suppression can be achieved.
　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 and end faces of the firing jig during the work of reassembling the firing jig or the work of transporting it into the kiln. It is possible to avoid, improve the production speed, and reduce the production cost.
（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。(a) is a plan view of a plate-shaped firing jig according to a first embodiment of the present invention, and (b) is a front view of (a). 図１のＡ－Ａ線断面図である。FIG. 2 is a cross-sectional view taken along the line AA of 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 the line AA of FIG. 1, and is an explanatory diagram of the inclined surface angle of the connecting 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。(a) is a front view showing a modification of the plate-shaped firing jig of the first embodiment according to the present invention, and (b) is another modification of the plate-shaped firing jig of the first embodiment according to the invention. It is a front view showing. 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. 5 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。FIG. 6 is a cross-sectional view taken along line BB of 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 the line BB of FIG. 5 and is an explanatory diagram of the inclined surface angle of the hollow connecting portion; （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。(a) is a plan view of a plate-shaped firing jig according to a third embodiment of the present invention, and (b) is a front view of (a). 図８のＣ－Ｃ線断面図である。FIG. 9 is a 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. 5 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。It is a front view which shows the state which mounted the to-be-sintered material on the plate-shaped baking jig of 1st Embodiment which concerns on this invention. 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. 5 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 plate-shaped firing jigs 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 of first to fourth embodiments according to 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, the plate-shaped firing jig of the first embodiment according to the present invention will be described below based on the accompanying drawings. FIG. 1(a) is a plan view of a plate-shaped firing jig according to a first embodiment of the present invention, and (b) is a front view of (a). FIG. 2 is an enlarged view of the plate-shaped firing jig of the first embodiment taken along the line A--A 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 FIGS. 1 and 2, the plate-shaped firing jig 10 of the first embodiment includes a plate-shaped base material 11, a protruding portion 13 that protrudes outward from an outer peripheral portion 12 of the plate-shaped base material 11, a plate It has a connecting portion 14 that connects the shaped base material 11 and the projecting portion 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。 The plate-shaped base material 11 is formed in a substantially rectangular shape in a plan view, as shown in FIG. 1(a). Moreover, as shown in FIG.1(b), the plate-shaped base material 11 is plate-shaped. The plate-like base material 11 is not limited to a substantially rectangular shape, and may be polygonal such as square or triangular, or other shapes such as circular or elliptical.
　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 projecting portion 13 is formed to project outward from the outer peripheral portion 12 of the plate-shaped base material 11 . Here, the projecting portion 13 is provided in a range of 50% or more and 100% or less of the total side length of the outer peripheral portion 12 of the plate-shaped base material 11 . Thus, if the protruding portion 13 is 50% or more and 100% or less of the total side length of the outer peripheral portion 12, for example, when the plate-shaped firing jig 10 is conveyed into the electric furnace, the side of the electric furnace that is likely to come into contact with the side of the electric furnace. It can be provided on the wall surface side, and damage to the plate-like base material 11 can be avoided (see FIG. 14). Furthermore, the protruding portion 13 preferably accounts for 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 projecting portion 13 is 10% or more and 95% or less of the thickness dimension T of the plate-shaped base material 11. If the thickness dimension t1 of the projecting portion 13 is 10% or more of the thickness dimension T of the plate-shaped base material 11, even if there is a difference in the thickness dimension between the projecting portion 13 and the plate-shaped base material 11, there will be no mixing unevenness. does not occur (see FIG. 14). If the thickness t1 of the projecting portion 13 is less than 95% of the thickness T of the plate-shaped base material 11, the plate-shaped base material 11 may be damaged by chipping during recombination work or transportation work. Damage can be avoided. Furthermore, the thickness dimension t1 of the projecting portion 13 is preferably 25% or more and 95% or less, more preferably 50% or more and 95% or less, and 60% or more of the thickness dimension T of the plate-shaped base material 11. It is more preferable that it is 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 projecting portion 13 is thinned by a predetermined dimension from the front surface 15 and the rear surface 16 of the plate-shaped base material 11 . Specifically, the projecting portion 13 is thinned by predetermined dimensions d1 and d2 from the front surface 15 and the rear 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 connecting portion 14 connects the plate-shaped base material 11 and the projecting portion 13 . Moreover, the width dimension W1 of the connection portion 14 is 10% or more and 200% or less of the width dimension w1 of the protrusion. If the width dimension W1 of the connection portion 14 is 10% or more and 200% or less of the width dimension w1 of the projecting portion, damage to the plate-shaped base material 11 due to chipping that occurs during recombination work or transportation work is prevented. can be avoided (see Figure 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）。 As shown in FIG. 3 , the connecting portion 14 has an inclined surface that inclines from the plate-like base material 11 toward the projecting portion 13 , and the inclined surface and the surface 15 or the back surface 16 of the plate-like base material 11 are connected to each other. and the angles θ1 and θ2 formed with are 20 degrees or more and 85 degrees or less. If the angles θ1 and θ2 formed by 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, the plate-shaped base material 11 is prevented from chipping during recombination work or transportation work. Damage to the material 11 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 connecting portion 14 may be not only linear but also curved, and examples thereof include modifications shown in FIGS. Furthermore, the shape of the inclined surface of the connection portion 14 is not limited to these, and any shape that can be pressed can be used.
　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。 In addition, as shown in FIG. 1, corners 17 of the plate-shaped baking jig 10 are rounded. Since the corners of the plate-shaped baking jig 10 are rounded, 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 configuration described above is formed by so-called press molding, in which a powdery or clay-like refractory is poured into a mold (not shown) and pressed. The refractories are, for example, alumina, mullite, zirconia, cordierite, spinel, silicon carbide, nitrogen silicon, and mixtures thereof.
　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 firing jig 10A of a second embodiment according to the present invention will be described below based on the accompanying drawings. FIG. 5 is a plan view of a plate-shaped firing jig 10A of a second embodiment according to the present invention. In addition, the same code|symbol is attached|subjected to the component same as the plate-shaped baking jig 10 of 1st Embodiment, and description is abbreviate|omitted suitably.
　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。 10 A of plate-shaped baking jigs of 2nd Embodiment are the plate-shaped base material 11A, the protrusion part 13 which protrudes outward from the outer peripheral part 12 of the plate-shaped base material 11A, and the plate-shaped base material 11A and the protrusion part 13. The plate-shaped base material 11A has a hollow portion 40, and a hollow protruding portion 42 protruding inward from an inner peripheral portion 41 of the hollow portion 40 is formed in the plate-shaped base material 11A. .
　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 protruding portion 42 is formed to protrude inward from the inner peripheral portion 41 of the hollow portion 40 . Here, the hollow projecting portion 42 is provided in a range of 50% or more and 100% or less of the total side length of the inner peripheral portion 41 . Since the hollow protruding part 42 is provided in the range of 50% or more and 100% or less of the total side length of the inner peripheral part 41, the plate-shaped base material 11 is damaged by chipping that occurs during recombination work or transportation work. can be avoided (see FIG. 14). In addition, the hollow projecting portion 42 preferably accounts for 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）。 Further, as shown in FIG. 6, the thickness dimension t2 of the hollow projecting portion 42 is preferably 10% or more and 95% or less of the thickness dimension T of the plate-shaped base material 11. If the thickness dimension t2 of the hollow protruding portion 42 is 10% or more and 95% or less of the thickness dimension T of the plate-shaped base material 11, the plate-shaped base material 11 is prevented from being chipped during recombination work or transportation work. damage 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 connecting portion 43 that connects the inner peripheral portion 41 and the hollow projecting portion 42 is formed. The width dimension W2 of the hollow connection portion 43 is preferably 10% or more and 200% or less of the width dimension w2 of the hollow projection portion 43 . If the width dimension W2 of the hollow connecting portion 43 is 10% or more and 200% or less of the width dimension w2 of the hollow projecting portion 43, the plate-shaped base material 11 is prevented from chipping during recombination work or transportation work. damage 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。 Further, as shown in FIG. 7, the hollow connecting portion 43 has an inclined surface that inclines from the inner peripheral portion 41 toward the hollow protruding portion 42, and the inclined surface and the surface 15 of the plate-like base material 11 Alternatively, the angles θ3 and θ4 formed with the back surface 16 are 20 degrees or more and 85 degrees or less. If the angles θ3 and θ4 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, the plate-shaped base material 11 is prevented from chipping during recombination work or transportation work. Damage to the material 11 can be avoided (see FIG. 14). Here, the inclined surface of the hollow connecting portion 43 may be curved as well as linear.
　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 firing jig 10A of the second embodiment is provided with the hollow portion 40, so that the weight of the plate-shaped firing jig 10A can be reduced. In addition, since the hollow part 40 is provided, the hot air in the firing furnace can easily reach the lower surface side of the object X to be fired, so that the object X to be fired can be fired 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 penetrating shape, the part corresponding to the hollow portion may have a thin shape instead of a penetrating portion, or a shape including both a penetrating portion and a thinned portion. may be
　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。 Further, a plate-shaped firing jig 10B of a third embodiment according to the present invention will be described below with reference to the accompanying drawings. FIG. 8(a) is a plan view of a plate-shaped firing jig 10B of a third embodiment according to the present invention, and (b) is a front view of (a). In addition, the same code|symbol is attached|subjected to the component same as the plate-shaped baking jig 10 of 1st Embodiment, and description is abbreviate|omitted suitably.
　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。 A plate-shaped firing jig 10B of the third embodiment includes a plate-shaped base material 11B, a projecting portion 13 projecting outward from an outer peripheral portion 12 of the plate-shaped base material 11B, and a plate-shaped base material 11B and the projecting portion 13. The plate-shaped base material 11B has a slit portion 50, and protrudes toward each other from the slit inner peripheral portion 51 of the plate-shaped base material 11B forming the slit portion 50. A slit protrusion 52 is formed.
　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５１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 protrusions 52 protrude toward each other from the slit inner periphery 51 of the plate-shaped base material 11B forming the slit 50, and are formed so that the slit protrusions 52 face each other. Also, a slit connection portion 53 that connects the slit inner peripheral portion 51 and the slit projecting portion 52 is formed.
　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）。 As shown in FIG. 9, the slit width dimension Ws of the slit portion 50 is 5% or more and 1,000% or less of the width dimension ws of the slit projecting portion 52 . If the slit width dimension Ws of the slit portion 50 is 5% or more and 1,000% or less of the width dimension ws of the slit protruding portion 52, chipping that occurs during recombination work or transportation work will occur. Damage to the material 11 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。 In the plate-shaped firing jig 10B of the third embodiment, the slit protruding portions 52 are formed in the slit portions 50 to prevent chipping caused by thermal expansion during the firing process in the firing furnace. Damage such as cracks in the plate-shaped base material 11B can be suppressed.
　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。 Furthermore, a plate-shaped firing jig 10C of a fourth embodiment according to the present invention will be described below with reference to the accompanying drawings. FIG. 10 is a plan view of a plate-shaped firing jig according to a fourth embodiment of the present invention. The same components as those of the plate-shaped firing jig 10 of the first embodiment, the plate-shaped firing jig 10A of the second embodiment, and the plate-shaped firing jig 10B of the third embodiment are denoted by the same reference numerals. description is 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。 10 C of plate-shaped baking jigs of 4th Embodiment are the plate-shaped base material 11C, the protrusion part 13 which protrudes outward from the outer peripheral part 12 of the plate-shaped base material 11C, and the plate-shaped base material 11C and the protrusion part 13. The plate-shaped base material 11C has a hollow portion 40, and a hollow protruding portion 42 protruding inward from an inner peripheral portion 41 of the hollow portion 40 is formed, and A slit protruding portion 52 having a slit portion 50 and protruding toward each other from a slit inner peripheral portion 51 of the plate-shaped base material 11C is 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 firing jig 10C of the fourth embodiment is provided with the hollow portion 40, so that the weight of the plate-shaped firing jig 10A can be reduced. In addition, as will be described later, the hot air in the firing furnace can easily reach the lower surface side of the object X to be fired, so that the object X to be fired can be fired more efficiently. Further, in the plate-shaped baking jig 10C of the fourth embodiment, the slit protruding portion 52 is formed in the slit portion 50, so that the slit portion 50 is prevented from Damage to the plate-like base material 11B due to internal chipping can be suppressed.
　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。 In the plate-shaped firing jigs 10, 10A, 10B, and 10C of the above-described first to fourth embodiments, the firing process is carried out with the object X to be fired placed thereon as follows. The plate-shaped firing jig 10 of the first embodiment will be described, but the same applies to the plate-shaped firing jigs 10A, 10B, and 10C of the second to fourth embodiments, so the 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-like base material 11 of the plate-like firing jig 10 of the first embodiment, and an object to be fired X is placed on the upper surface 21 of the setter 20. In this state, the object X to be fired is placed on the hearth 100 in the firing furnace, and the object X to be fired is fired. Here, the setter 20 is formed in a substantially rectangular shape in plan view, and is a thin plate that is thinner than the thickness dimension T of the plate-like 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。 Also, the setter 20 is made of a highly breathable refractory material. Since the setter 20 has high air permeability, the hot air in the firing furnace passes through the setter 20 and easily reaches the lower surface side of the object X to be fired, so that the object X to be fired can be efficiently fired. can. As a refractory with high air permeability, there is a porous plate-like material in which many pores are formed.
　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 the hollow portion 41 is formed like the plate-shaped firing jigs 10A and 10C of the second and fourth embodiments, the hot air in the firing furnace passes through the setter 20 and the object to be fired X Since it becomes easier to reach the lower surface side of the , the baking of the object X to be baked can be carried out 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。 Further, as shown in FIG. 12, a plate-shaped firing jig 10 is arranged on a hearth 100 in a firing furnace, and a block-shaped support is placed between a plurality of setters 20 on which the objects X to be fired are placed. The members 30 can be arranged to form a state in which they are stacked in multiple stages. By stacking multiple layers in this manner, more objects X to be fired can be fired at once than in the case of a single layer. Furthermore, as shown in FIG. 13, instead of the setter 20, it is also possible to stack 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 firing jig 10 of the present embodiment described above, the plate-shaped firing jigs according to Examples 1 to 20 and the plate-shaped firing jigs according to Comparative Examples 1 and 2 were subjected to thermal shock tests, sliding tests, And a press die damage test was performed. The configurations and test results of Examples 1 to 20 and Comparative Examples 1 and 2 are 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、Aｌ２O３：８０質量％、ＳｉＯ２：２０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。 The plate-shaped firing jigs according to Examples 1 to 20 and Comparative Examples 1 and 2 consist of 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 ( methyl cellulose, etc.) were stirred and mixed using a high-speed mixer so that Al 2 O 3 : 80% by mass and SiO 2 : 20% by mass, to produce a stirred mixture. 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). Then, these molded bodies are fired in an air atmosphere (attained temperature: 1700° C.) to obtain sintered bodies, thereby producing plate-shaped firing jigs according to Examples 1 to 20 and Comparative Examples 1 and 2. made. It should be noted that "thinned" in Example 9 in FIG. indicates that it has Comparative Example 1 has a shape in which the protruding portion 13 and the connecting portion 14 are not formed on the outer peripheral portion of the plate-shaped base material 11 . Furthermore, Comparative Example 2 has a shape in which the connecting portion 14 is not formed on the outer peripheral portion of the plate-shaped base material 11 and the projecting portion 13 is 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 for evaluating the susceptibility to elongation of cracks generated when the plate-shaped firing jig is repeatedly heated and rapidly cooled, and the test was conducted as follows. Specifically, (1) a dummy block (100 mm × 100 mm × 50 mm) is arranged in the center of the upper and lower surfaces of a plate-shaped firing jig (200 mm × 200 mm × thickness of each base material shown in Fig. 14), which is a test piece. In this state, it is placed in an electric furnace and held for 1 hour while being heated to 1,100°C. (2) After taking out the dummy block from the electric furnace with the dummy block placed thereon, when the specimen is air-cooled to normal temperature, cracks occurring at the edge of the projecting portion 13 of the specimen are checked. Here, the dummy block is made of ceramics, and prevents the test piece from coming into contact with the doorway or wall surface of the electric furnace and being damaged when the test piece is moved into or out of the electric furnace. The cracks were observed visually, and the crack length was measured using a crack measuring scale or gauge. The above steps (1) to (2) are performed once, and the maximum crack length generated at the end of the protruding portion 13 of the test body reaches 30 mm from the end. Scores are given according to the number of times the process is repeated (“Number of times” in Table 1), and those corresponding to 6 to 10 points are evaluated as A (good) because the cracks generated at the end are very difficult to extend. However, those that correspond to 3 to 5 points are evaluated as B (acceptable) because the cracks that occurred at the end are difficult to extend, and those that correspond to 1 to 2 points are those that have cracks at the end. It was evaluated as C (impossible) because it was easy.
Figure JPOXMLDOC01-appb-T000001
Figure JPOXMLDOC01-appb-T000001
〈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 is a test for evaluating the susceptibility to chipping when the plate-shaped firing jig is moved in an arbitrary direction, and was conducted as follows. Specifically, (a) the plate-shaped firing jig (200 mm x 200 mm x thickness of each base material shown in Fig. 14), which is a test piece, is arranged such that the back surface 16 of the plate-shaped firing jig 10 is the bottom surface. A weight of a predetermined weight was placed on the surface 15 of the plate-shaped baking jig 10 in the mounted state, and the total weight of the specimen was adjusted to 10 kg. Then, the test piece is set in a sliding tester, and in the horizontal direction, at a sliding speed of 100 mm / sec, on the brick of the same material as the test piece in the front and back direction for a predetermined sliding distance (500 mm × 40 times = 20 m) was slid. Next, (b) the test piece is placed on a brick made of the same material as the test piece, and is raised at an angle of 90 degrees so that the protruding portion 13 provided on the outer peripheral portion 12 of the plate-shaped firing jig 10 becomes the bottom surface. After that, the operation of returning the back surface 16 of the plate-shaped firing jig 10 to the bottom surface, the so-called rising and falling operation, was repeated 10 times, and cracks and chips that occurred at the end of the protruding portion 13 of the test piece were confirmed. , It was confirmed whether the maximum value of cracks and chips generated at the end was 10 mm or more. Here, the rising/falling operation was continuously performed until 10 reciprocations were completed. Furthermore, 10 reciprocations of the start-up and fall-down operations were set as one set, and a rest time of 10 minutes or more was provided for each set. During this rising/falling operation, the protruding portion 13 and the back surface 16 were prevented from being impacted by the drop. Furthermore, the cracks and chips were measured visually using a crack measuring scale or gauge. The above steps (a) and (b) were repeated until the maximum value of cracks and chips generated at the end of the protruding portion 13 of the test piece reached 10 mm or more. Scores are given according to the number of sets (see Table 2), and those corresponding to 6 to 10 points are evaluated as A (good) because cracks and chips are very unlikely to occur at the end, and 3 to 5 points. Those that fall under , are evaluated as B (acceptable) because cracks and chips are unlikely to occur at the end, and those that fall under 1 to 2 points are evaluated as C (impossible) because cracks and chips are likely to occur at the end. evaluated.
Figure JPOXMLDOC01-appb-T000002
Figure JPOXMLDOC01-appb-T000002
〈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 for evaluating the state of damage occurring in the press die after repeated press working with respect to the plate-shaped firing jig, and was conducted as follows. Specifically, the press mold was brought into contact with the plate-shaped firing jig (200 mm × 200 mm × thickness of each base material shown in Fig. 14), which is the test body, from the top and bottom of the test body, and the test body was kept for 5 seconds. A step of pressurizing until the molding pressure reaches 100 MPa, holding the molding pressure at 100 MPa for 5 seconds, and then reducing the pressure for 3 seconds was repeated a predetermined number of times (for example, 100 times). After that, the press die was separated from the test piece, and the state of damage to the press die was checked. Here, when a crack or chip having a maximum length of 10 mm or more was confirmed at the edge of the press die, for example, it was determined that the press die was damaged. The cracks and chips were measured visually using a crack measuring scale or gauge. In addition, the above process was continuously performed until it was repeated 100 times. Furthermore, 100 times of the above-described steps were set as one set, and a rest time of 10 minutes or more was provided for each set. Then, a score is given according to the number of sets repeated until the press die is damaged (see Table 3), and those that correspond to 6 to 10 points are rated A (good) because the press die is very unlikely to be damaged. Those that correspond to 3 to 5 points are evaluated as B (acceptable) because the press mold is difficult to damage, and those that correspond to 1 to 2 points are evaluated as C (easily damaged). not possible).
Figure JPOXMLDOC01-appb-T000003
Figure JPOXMLDOC01-appb-T000003
　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 invention disclosed in this specification, in addition to the configuration of each invention and embodiment, is specified by changing these partial configurations to other configurations disclosed in this specification within the applicable range, or or specified by adding other configurations disclosed in the present specification to the configuration of , or broader concepts specified by deleting these partial configurations to the extent that partial effects can be 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- like base materials 11, 11A, 11B, and 11C of the plate-like firing jigs 10, 10A, 10B, and 10C of the first to fourth embodiments of the present invention are plate-like. Supporting portions (not shown) protruding in the vertical direction are provided from the rear surfaces 16 of the plate-shaped base materials 11, 11B, and 11C, and the supporting portions are provided in the vertical direction on the front surfaces 15 of the plate-shaped base materials 11, 11A, 11B, and 11C. A recessed receiving portion (not shown) may be provided at a position where it can be received. By providing a support portion (not shown) and a receiving portion (not shown), as shown in FIG. It can be layered.
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 baking jig 11, 11A, 11B, 11C Plate-shaped base material 12 Peripheral portion 13 Projection portion 14 Connection portion 15 Front surface 16 Back surface 17 Corner portion 20 Setter 30... Supporting member 40... Hollow part 41... Inner peripheral part 42... Hollow protruding part 43... Hollow connecting part 50... Slit part 51... Slit inner peripheral part 52... Slit protruding part 53... Slit connecting part 100... Hearth X... Cover baked goods

Claims (9)

  1. 　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板状焼成治具。     a plate-shaped base material;
    a protruding portion protruding outward from the outer peripheral portion of the plate-shaped base material;
    a connecting portion that connects the plate-shaped base material and the projecting portion;
    A plate-shaped firing jig characterized by having
  2. 　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, wherein the protruding portions are provided in a range of 50% or more and 100% or less of the total side length of the outer peripheral portion of the plate-shaped base material.
  3. 　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 projecting portion is 10% or more and 95% or less of the thickness dimension of the plate-shaped base material.
  4. 　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。 The plate-shaped firing jig according to any one of claims 1 to 3, wherein the width dimension of the connection portion is 10% or more and 200% or less of the width dimension of the projection portion.
  5. 　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 connecting portion has an inclined surface that inclines from the plate-like base material toward the projecting portion, and the angle formed by the inclined surface and the surface or the back surface of the plate-like base material is 20 degrees or more. The plate-shaped firing jig according to any one of claims 1 to 4, characterized in that the angle is 85 degrees or less.
  6. 　前記突出部は、前記板状母材の表面、及び裏面から所定寸法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。 The plate-shaped firing jig according to any one of claims 1 to 5, characterized in that the protruding portions are thinned by a predetermined dimension from the front surface and the back surface of the plate-shaped base material.
  7. 　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,
    The plate-shaped firing jig according to any one of claims 1 to 6, wherein a hollow protruding portion is formed to protrude inward from an inner peripheral portion of the hollow portion.
  8. 　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,
    The plate according to any one of claims 1 to 7, characterized in that slit protruding portions protruding toward each other are formed from an inner peripheral portion of the slit of the plate-like base material forming the slit portion. firing jig.
  9. 　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 the slit width dimension of the slit portion is 5% or more and 1,000% or less of the width dimension of the slit protruding portion.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0397199U (en) * 1990-01-24 1991-10-04
JPH07243770A (en) * 1994-03-01 1995-09-19 Ngk Insulators Ltd Setter
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0397199U (en) * 1990-01-24 1991-10-04
JPH07243770A (en) * 1994-03-01 1995-09-19 Ngk Insulators Ltd Setter
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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