WO2022158072A1 - 板状焼成治具 - Google Patents

板状焼成治具 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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WO
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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English (en)
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/JP7545476B2/ja
Priority to CN202190000342.7U priority patent/CN219103708U/zh
Publication of WO2022158072A1 publication Critical patent/WO2022158072A1/ja

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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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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Resistance Heating (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Adornments (AREA)
  • Optical Elements Other Than Lenses (AREA)
PCT/JP2021/039578 2021-01-22 2021-10-27 板状焼成治具 WO2022158072A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2022536571A JP7545476B2 (ja) 2021-01-22 2021-10-27 板状焼成治具
CN202190000342.7U CN219103708U (zh) 2021-01-22 2021-10-27 板状烧制夹具

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Application Number Priority Date Filing Date Title
JP2021008369 2021-01-22
JP2021-008369 2021-01-22

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WO2022158072A1 true WO2022158072A1 (ja) 2022-07-28

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JP (1) JP7545476B2 (enrdf_load_stackoverflow)
CN (1) CN219103708U (enrdf_load_stackoverflow)
WO (1) WO2022158072A1 (enrdf_load_stackoverflow)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0397199U (enrdf_load_stackoverflow) * 1990-01-24 1991-10-04
JPH07243770A (ja) * 1994-03-01 1995-09-19 Ngk Insulators Ltd セッター
JP2000111269A (ja) * 1998-09-30 2000-04-18 Toshiba Ceramics Co Ltd 焼成用治具
JP3187105U (ja) * 2013-08-30 2013-11-07 日本碍子株式会社 ローラーハースキルン用セッター

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3244802B2 (ja) * 1992-10-01 2002-01-07 東芝電子エンジニアリング株式会社 窒化アルミニウム放熱板

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0397199U (enrdf_load_stackoverflow) * 1990-01-24 1991-10-04
JPH07243770A (ja) * 1994-03-01 1995-09-19 Ngk Insulators Ltd セッター
JP2000111269A (ja) * 1998-09-30 2000-04-18 Toshiba Ceramics Co Ltd 焼成用治具
JP3187105U (ja) * 2013-08-30 2013-11-07 日本碍子株式会社 ローラーハースキルン用セッター

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JP7545476B2 (ja) 2024-09-04
JPWO2022158072A1 (enrdf_load_stackoverflow) 2022-07-28

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