Setter

Abstract

To provide a setter in which the abrasion and damage of a face on the side in contact with a conveyance apparatus or the like are hard to be generated even when used in a state of being mounted with containers heat-treated together with heat treatment objects in a state of being stored with the heat treatment objects.SOLUTION: A setter 10 is used for mounting containers 100 heat-treated together with heat treatment objects in a state of being stored with the heat treatment objects. The setter includes a setter body part 20 formed into a plate shape. The setter body part 20 includes a first face 22 on the side to be mounted with the containers 100, a second face 24 on the side opposite to the first face 22 and a container mounting region 26 to be mounted with the containers 100 in the first face 22. In the second face 24, at least a region corresponding to the container mounting region 26 is an abrasion resistant region 28 having abrasion resistance higher than that of the first face 22.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a setter for mounting articles such as containers.

Background Art

[0002] Conventionally, articles such as the heat treatment containers disclosed in Patent Document 1 below have been used for performing heat treatment in, for example, the production of active materials for lithium batteries.

[0003] The heat treatment container disclosed in Patent Document 1 below is a trough-shaped container including a plate-shaped bottom portion and a plate-shaped wall portion erected over the entire periphery of the bottom portion, and is formed by firing a mixed powder containing alumina powder or the like.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] Here, after articles such as the above-described heat treatment container are heat-treated together with the object to be heat-treated in a state where the object to be heat-treated is accommodated, they are stacked on a setter outside the furnace for heat treatment and conveyed by a conveying device such as a roller conveyor. Therefore, the setter is conveyed on the conveying device in a state of receiving a large load from a plurality of containers and the fired products accommodated therein. Therefore, the setter used in the prior art has a problem that wear and damage are likely to occur on the surface in contact with the conveying device.

[0006] Therefore, an object of the present invention is to provide a setter in which wear and damage are less likely to occur on the surface in contact with a conveying device or the like even when used in a state where articles are mounted.

Means for Solving the Problem

[0007] (1) The setter of the present invention provided to solve the above-described problems is for mounting an article, and has a setter main body formed in a plate shape. The setter main body has a first surface on the side where the article is mounted, a second surface opposite to the first surface, and an article mounting region on the first surface where the article is mounted. At least a region corresponding to the article mounting region on the second surface is a wear-resistant region having higher wear resistance than the first surface.

[0008] The setter of the present invention has a plate-shaped setter main body having a first surface with an article mounting region and a second surface on the opposite side. Therefore, when transporting an article, the setter of the present invention can be used in a state where the article is mounted on the article mounting region of the first surface of the setter main body while the second surface of the setter main body is in contact with the transport device. When the setter of the present invention is used in such a usage mode, a load acts intensively on the article mounting region provided on the first surface, and at least a region corresponding to the article mounting region (hereinafter also referred to as "corresponding region") of the second surface is strongly pressed against the transport device. The setter of the present invention assumes use in such a state, and makes the wear resistance of at least the corresponding region of the second surface higher than the wear resistance of the first surface. Therefore, even if the setter of the present invention is transported with an article mounted on the article mounting region of the setter main body, wear and damage to the second surface in contact with the transport device or the like are less likely to occur.

[0009] Here, when the inventors conducted intensive studies, they found that when an article heat-treated together with the object to be heat-treated in a state where the object to be heat-treated is accommodated is mounted on the setter, the article becomes unstable, and the article may rattle or rotate on the setter. As a result of further intensive studies by the inventors, it was found that the reason for the unstable state as described above is that the central portion at the bottom of the article is deformed convexly downward during the heat treatment, and the deformed portion interferes with the setter.

[0010] (2) Based on the above findings, it is preferable that the setter of the present invention is provided with an interference suppression portion formed of a recess or a hole in the article mounting region.

[0011] By configuring the setter of the present invention as described in (2) above, even when an article whose bottom has been deformed convexly downward during the heat treatment is placed in the article mounting region, the deformed portion of the article fits into the recess or hole forming the interference suppression portion. As a result, the interference between the deformed portion of the article and the setter main body is suppressed. Therefore, by configuring the setter of the present invention as described in (2) above, even when an article whose bottom portion has been deformed convexly downward is placed in the article mounting region, it can be stably conveyed.

[0012] (3) It is preferable that the interference suppression portion of the setter of the present invention described above is provided in a region having a size of 1 / 5 or more and 1 / 2 or less of the size of the article mounting region.

[0013] By configuring the setter of the present invention as described in (3) above, while more reliably suppressing the interference between the deformed portion of the article and the setter main body, the article mounting region and the article can be surely brought into contact with each other at a portion on the outer peripheral side of the deformed portion of the article. As a result, the setter of the present invention can further improve the stability of the article mounted in the article mounting region.

[0014] (4) The setter of the present invention described above is preferably configured such that the setter main body is composed of a ceramic plate, and the wear-resistant region is formed by coating the second surface with glaze.

[0015] By configuring the setter of the present invention as in (4) above, in addition to improving the wear resistance of the wear-resistant region by the layer formed by coating the second surface with glaze, the surface of the wear-resistant region can be made smooth. As a result, the setter of the present invention can reduce the friction coefficient of the wear-resistant region that comes into contact with the conveying device when an article is placed on the article mounting region of the setter main body. Therefore, by adopting the configuration according to (4) above, the setter of the present invention can not only suppress the wear of the wear-resistant region but also be smoothly movable on the conveying device or the like with an article placed on the article mounting region.

[0016] (5) The setter of the present invention described above preferably has a standing portion formed so as to rise from the first surface of the setter main body, and the standing portion is provided so as to surround part or all of the article mounting region.

[0017] By configuring the setter of the present invention as in (5) above, displacement, rotation, etc. of the article placed in the article mounting region can be suppressed.

[0018] (6) The setter of the present invention described above is preferably configured such that a cushioning material is provided on at least the surface of the standing portion facing the article side mounted in the article mounting region.

[0019] By configuring the setter of the present invention as in (6) above, the impact caused by the contact between the article placed in the article mounting region and the standing portion can be alleviated. As a result, the setter of the present invention can suppress damage to the article placed in the article mounting region and the standing portion.

[0020] (7) The setter of the present invention described above is preferably configured such that the setter main body has a notch at the outer peripheral portion of the article mounting region, and when the article is mounted in the article mounting region, the bottom portion of the article is exposed from the notch on the second surface side.

[0021] By configuring the setter of the present invention as described in (7) above, in a state where an article is placed in the article mounting region, it is possible to access the bottom portion of the article exposed from the notch and lift the article from the bottom side.

[0022] (8) The setter of the present invention described above can be preferably used when the article is heat-treated together with the object to be heat-treated in a state where the object to be heat-treated is accommodated.

Effect of the Invention

[0023] According to the present invention, it is possible to provide a setter in which wear and damage on the surface in contact with a conveying device or the like are less likely to occur even when used with an article mounted thereon.

Brief Description of the Drawings

[0024]

Figure 1

Figure 2

Figure 3

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Figure 8

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Figure 10

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Figure 13

Figure 14

Mode for Carrying Out the Invention

[0025] Hereinafter, the setter 10 according to an embodiment of the present invention will be described. As shown in FIG. 1, the setter 10 is for mounting the container 100 in a normal temperature atmosphere after being heat-treated together with the object to be heat-treated in a state of accommodating the object to be heat-treated.

[0026] Container 100 is capable of accommodating, for example, a ceramic material for an active material containing lithium oxide as an object to be heat-treated. When heat-treating the object to be heat-treated, such as firing or annealing, container 100 is heat-treated together with the object to be heat-treated. As shown in FIG. 2, container 100 can have an external shape such as a cylindrical shape or a tank shape, for example. The setter 10 of the present embodiment uses a box-shaped container 100 having an opening on the top surface side as shown in FIG. 1 for mounting the same.

[0027] Container 100 is made of ceramics, for example, made of materials such as mullite and cordierite, and can be made from raw materials containing, for example, spinel, petalite, alumina, silicon carbide, fused silica, etc. The container 100 shown in FIG. 1 has a bottom portion 102 and a peripheral wall 104. The bottom portion 102 is assumed to have a rectangular shape in plan view. Further, the peripheral wall 104 is a portion formed to stand up over the entire circumference of the bottom portion 102 at the peripheral edge of the bottom portion 102.

[0028] As shown in FIG. 1, the setter 10 is used when transporting the container 100 after it has been heat-treated in a state of accommodating the above-described object to be heat-treated and then taken out from an atmosphere that becomes high temperature for heat treatment by a transport device 110 such as a roller conveyor. Therefore, the setter 10 is used in a state of being sandwiched between the container 100 and the transport device 110. Further, the setter 10 is assumed to have a load-bearing characteristic that can withstand sufficient use even when a plurality of containers 100 in a state of accommodating the object to be heat-treated are stacked vertically. As shown in FIG. 3, the setter 10 has a setter main body portion 20 and a standing-up portion 40.

[0029] The setter main body 20 is made of ceramics, such as mullite, cordierite, etc., and can be made from raw materials including, for example, spinel, petalite, alumina, silicon carbide, fused silica, etc. As shown in FIG. 1, the setter main body 20 is plate-shaped. The setter main body 20 has a first surface 22, a second surface 24, a container mounting region 26, a wear-resistant region 28, and a notch 30.

[0030] The first surface 22 is the surface on which the container 100 is mounted (see FIG. 1, etc.). Also, the second surface 24 is the surface on the opposite side of the first surface 22. The second surface 24 is the surface that comes into contact with the conveying device 110 when the container 100 is mounted and conveyed.

[0031] The container mounting region 26 is the region on the first surface 22 where the container 100 is mounted (see FIG. 1, etc.). The container mounting region 26 is the region surrounded by the upright portion 40, which will be described in detail later. The container mounting region 26 can be surrounded entirely by the upright portion 40, but in this embodiment, it is surrounded by four upright portions 40 provided at the four corners. The container mounting region 26 is formed according to the size and shape of the bottom portion 102 of the container 100. In this embodiment, since the container 100 is trough-shaped and the bottom portion 102 has a rectangular (substantially square in this embodiment) shape, the region surrounded by the four upright portions 40 provided at the four corners is formed to be rectangular (substantially square in this embodiment). In this embodiment, since the notch 30, which will be described in detail later, is provided, the shape of the setter main body 20 in the container mounting region 26 is the shape with the notch 30 missing from the container mounting region 26.

[0032] The container mounting area 26 has an interference suppression portion 32. The interference suppression portion 32 is provided to suppress interference with the bottom portion 102 deformed due to heat treatment when the container 100 is placed in the container mounting area 26. Here, as shown by the arrow in FIG. 4, when the container 100 containing the object to be heat-treated is heat-treated together with the object to be heat-treated, the inner peripheral side (central side) rather than the outer peripheral side of the bottom portion 102 tends to deform into a convex shape downward, although slightly. In order to suppress the interference of such a convex-shaped portion with the setter 10 in the container mounting area 26, the interference suppression portion 32 is constituted by a concave portion or a hole formed in a concave shape in the direction from the first surface 22 to the second surface 24 on the central side of the container mounting area 26. In the present embodiment, the interference suppression portion 32 is constituted by a concave portion.

[0033] As shown in FIG. 3(a), the interference suppression portion 32 is configured to have a size of not less than 1 / 5 and not more than 1 / 2 of the size of the container mounting area 26. Also, the depth of the concave portion forming the interference suppression portion 32 is preferably set assuming the degree of deformation of the bottom portion 102 in the container 100 mounted on the setter 10. Specifically, the concave portion forming the interference suppression portion 32 is preferably formed in a concave shape from the first surface 22 to the second surface 24 in the range of 1 mm or more and 5 mm or less. The interference suppression portion 32 can have an opening shape such as a circular shape, an elliptical shape, a semi-circular shape, a triangular shape, a polygonal shape such as a quadrangular shape, a star shape, other geometric shapes, an amorphous shape, and the like. In the present embodiment, as shown in FIG. 3(a), the interference suppression portion 32 is configured to have a circular opening shape.

[0034] The notch portion 30 is provided in a portion of the setter main body portion 20 that forms the outer peripheral portion of the container mounting area 26. In the present embodiment, when assuming a virtual line of a rectangle (a square in the illustrated example) that forms the outer edge of the setter main body portion 20, the notch portion 30 is provided by cutting out the middle portion of at least one side (all four sides in the illustrated example) among the four sides. Therefore, when the container 100 is mounted on the container mounting area 26, as shown by hatching in FIG. 5, on the second surface 24 side, the bottom portion 102 of the container 100 is in a state of being exposed from the notch portion 30. Thereby, when lifting the container 100 mounted on the setter 10, devices and instruments such as a robot hand, or a human hand can be inserted below the bottom portion 102 through the notch portion 30, and the container 100 can be lifted from below.

[0035] The wear-resistant area 28 is an area provided on the second surface 24 and having higher wear resistance than the first surface 22 of the setter 10. The wear-resistant area 28 is set in an area corresponding to at least the container mounting area 26 on the second surface 24. In the present embodiment, since the container mounting area 26 is provided over substantially the entire area of the first surface 22, the wear-resistant area 28 is provided over the entire area of the second surface 24. The wear-resistant area 28 can be formed, for example, by improving the wear resistance by chemical methods such as coating the second surface 24 with glaze, diamond-like carbon, etc., or by improving the surface hardness and density by mechanical methods such as processing the second surface 24 of the ceramics forming the setter 10 with a laser or an ion beam.

[0036] In this embodiment, the wear-resistant region 28 is formed by coating the second surface 24 of the ceramic that makes up the setter 10 with a glaze. Specifically, on the second surface 24 of the ceramic that makes up the setter 10, the glaze is applied to the region that forms the wear-resistant region 28 by means such as spraying or applying with a brush, etc. After natural drying, the wear-resistant region 28 can be formed by performing heat treatment at a predetermined firing temperature (glaze firing temperature). As a result, the glaze applied to the region that forms the wear-resistant region 28 melts on the surface of the second surface 24 to form a glassy layer. The firing temperature (glaze firing temperature) can be appropriately set in consideration of the type and components of the glaze used, the characteristics of the ceramic that makes up the setter 10 as the base material, etc. For example, when using a glaze containing boron compound and crystalline silica as the main components, it is advisable to perform heat treatment with the firing temperature (glaze firing temperature) set at 1000°C.

[0037] The upright upper part 40 positions the container 100 mounted in the container mounting region 26 so that it does not shift or the like on the first surface 22. As shown in FIG. 3, the upright upper part 40 is formed so as to rise from the first surface 22 of the setter main body part 20. The upright upper part 40 is provided so as to surround part or all of the container mounting region 26 provided on the first surface 22. In this embodiment, since the notch 30 is provided in the setter main body part 20, the upright upper part 40 is provided at the outer edge of the container mounting region 26 excluding the part where the notch 30 is provided. In this embodiment, as described above, when assuming a rectangular virtual line forming the outer edge of the setter main body part 20, the notch 30 is provided in the middle part of each of the four sides. Therefore, the upright upper part 40 is provided at the four corners of the container mounting region 26. Accordingly, the upright upper part 40 can support the four corners of the container 100 mounted in the container mounting region 26 on the bottom 102 side and position the container 100.

[0038] A buffer material 42 is provided on the upright upper part 40. The buffer material 42 is provided on the surface of the upright upper part 40 facing at least the container 100 mounted in the container mounting area 26. In the present embodiment, the buffer material 42 is provided on the entire upright upper part 40. The buffer material 42 can be provided on the upright upper part 40 by an appropriate method, such as a method of applying a resin material having elasticity to the upright upper part 40, a method of attaching an elastic sheet material such as a rubber sheet to the upright upper part 40, a method of mounting a sponge material on the upright upper part 40, or a method of mounting a form formed as a removable protective cap on the upright upper part 40. Further, since the buffer material 42 is assumed to come into contact with the container 100 in a high-temperature state, it is preferably formed of a material having elasticity and heat resistance. For example, the buffer material 42 is preferably formed using a resin such as silicone rubber, fluororubber, ethylene-propylene rubber, polyimide, polyphenylene sulfide, or a material such as a ceramic sponge or glass fiber-reinforced silicone. In the present embodiment, the buffer material 42 is formed by applying a sealing material made of a heat-resistant resin material to the upright upper part 40 and drying and solidifying it.

[0039] ≪Regarding the functions and effects≫ The setter 10 according to the above-described embodiment has characteristic configurations as shown in the following (a) to (h), and thus the effects peculiar to the present invention can be obtained.

[0040] (a) The above-described setter 10 is for mounting the container 100 (article), has a setter main body portion 20 formed in a plate shape, and the setter main body portion 20 has a first surface 22 on the side where the container 100 is mounted, a second surface 24 opposite to the first surface 22, and a container mounting area 26 on the first surface 22 where the container 100 is mounted. It is characterized in that at least the area corresponding to the container mounting area 26 on the second surface 24 is a wear-resistant area 28 having higher wear resistance than the first surface 22.

[0041] The setter 10 has a plate-shaped setter main body 20 having a first surface 22 with a container mounting area 26 and a second surface 24 on the opposite side thereof. Therefore, when transporting the container 100, the setter 10 can be used with the container 100 mounted in the container mounting area 26 on the first surface 22 of the setter main body 20 while bringing the second surface 24 of the setter main body 20 into contact with the transport device 110. When the setter 10 is used in such a usage form, a load acts intensively on the container mounting area 26 provided on the first surface 22, and it is strongly pressed against the transport device 110 in at least the corresponding area of the second surface 24 corresponding to the container mounting area 26. Assuming that the setter 10 is used in such a state, the wear resistance of at least the corresponding area of the second surface 24 is made higher than the wear resistance of the first surface 22. Therefore, even when the setter 10 is transported with the container 100 mounted in the container mounting area 26 of the setter main body 20, wear and damage to the second surface 24 in contact with the transport device 110 and the like are less likely to occur.

[0042] (b) The above-described setter 10 is for mounting the container 100 that has been heat-treated together with the object to be heat-treated in a state where the object to be heat-treated is accommodated. It has a setter main body 20 formed in a plate shape. The setter main body 20 has a first surface 22 on the side where the container 100 is mounted, a second surface 24 on the side opposite to the first surface 22, and a container mounting area 26 on the first surface 22 where the container 100 is mounted. An interference suppression portion 32 formed of a recess or a hole is provided on the central side of the container mounting area 26.

[0043] By configuring the setter 10 as described in (b) above, even when the container 100 in a state where the central portion of the bottom 102 is deformed convexly downward due to the heat treatment is placed on the container mounting area 26, the deformed portion of the container 100 fits into the concave portion or hole forming the interference suppression portion 32. Thereby, the interference between the deformed portion of the container 100 and the setter main body portion 20 is suppressed. Therefore, by configuring the setter 10 as described in (b) above, even when the container 100 in a state where the central portion of the bottom 102 is deformed convexly downward is placed on the container mounting area 26, it can be stably transported.

[0044] (c) In the above-described setter 10, the interference suppression portion 32 is provided in a region having a size of 1 / 5 or more and 1 / 2 or less of the size of the container mounting area 26.

[0045] By configuring the setter 10 as described in (c) above, while more surely suppressing the interference between the deformed portion of the container 100 and the setter main body portion 20, the container mounting area 26 and the container 100 can be surely brought into contact with each other at a portion on the outer peripheral side of the deformed portion of the container 100. Thereby, the setter 10 can further improve the stability of the container 100 mounted on the container mounting area 26.

[0046] (d) In the above-described setter 10, the setter main body portion 20 is constituted by a ceramic plate body, and the wear-resistant region 28 is formed by coating the second surface 24 with a glaze.

[0047] By configuring the setter 10 as described in (d) above, in addition to improving the wear resistance of the wear-resistant region 28 by the layer formed by coating the second surface 24 with the glaze, the surface of the wear-resistant region 28 can be made smooth. Thereby, the setter 10 can reduce the friction coefficient of the wear-resistant region 28 that comes into contact with the transfer device 110 in a state where the container 100 is mounted on the container mounting region 26 of the setter main body portion 20. Therefore, by adopting the configuration according to (d) above, the setter 10 can not only suppress the wear of the wear-resistant region 28 but also be smoothly movable above the transfer device 110 or the like in a state where the container 100 is mounted on the container mounting region 26.

[0048] (e) The above-described setter 10 has a standing portion 40 formed so as to rise from the first surface 22 of the setter main body portion 20, and the standing portion 40 is provided so as to surround a part or all of the container mounting region 26.

[0049] By configuring the setter 10 as described in (e) above, displacement, rotation, etc. of the container 100 arranged in the container mounting region 26 can be suppressed.

[0050] (f) The above-described setter 10 has a cushioning material 42 provided on at least the surface facing the container side mounted in the container mounting region 26 in the standing portion 40.

[0051] By configuring the setter 10 as described in (f) above, the impact caused by the contact between the container 100 arranged in the container mounting region 26 and the standing portion 40 can be alleviated. Thereby, the setter 10 can suppress damage to the container 100 arranged in the container mounting region 26 and the standing portion 40.

[0052] (g) The above-described setter 10 has a notch 30 in the outer peripheral portion of the container mounting region 26 of the setter main body portion 20, and when the container 100 is mounted on the container mounting region 26, the bottom portion 102 of the container 100 is exposed from the notch 30 on the second surface side.

[0053] By configuring the setter 10 as described in (g) above, in a state where the container 100 is placed in the container mounting area 26, it is possible to access the bottom portion 102 of the container 100 exposed from the notch 30 and lift the container 100 from the bottom side.

[0054] (h) As described above, the setter 10 can be suitably used when the article to be mounted thereon is the container 100 that has been heat-treated together with the object to be heat-treated in a state of containing the object to be heat-treated.

[0055] ≪Regarding the modification example≫ The above-described setter 10 merely shows one embodiment of the present invention, and changes, omissions, additions, etc. to the configuration can be appropriately made without departing from the gist of the present invention. For example, the above-described setter 10 only needs to be such that at least the area corresponding to the container mounting area 26 on the second surface 24 is a wear-resistant area 28 having higher wear resistance than the first surface 22 as described in (a) above, and it is not necessary for the entire second surface 24 to be the wear-resistant area 28. The setter 10 can include an area other than the wear-resistant area 28 on the second surface 24.

[0056] Also, although the setter 10 is provided with the interference suppression portion 32 having a circular opening shape as shown in FIG. 3, for example, it can be provided with the interference suppression portion 32 having a polygonal opening shape as shown in FIGS. 6 to 8. Further, although the setter 10 is provided with the interference suppression portion 32 formed of a concave portion as shown in FIG. 3, the present invention is not limited thereto, and for example, it can also be configured by a hole penetrating between the first surface 22 and the second surface 24 as shown in FIG. 9. Also, regarding the case where the interference suppression portion 32 is configured by a hole, the opening shape of the interference suppression portion 32 can be other than circular.

[0057] The above-described setter 10 is provided with an interference suppression portion 32 formed by a recess or a hole on the central side of the container mounting region 26 as described in (b) above, but the present invention is not limited thereto. For example, the setter 10 may be configured not to include the interference suppression portion 32. Further, when the bottom portion 102 of the container 100 tends to deform at a location other than the central portion or in addition to the central portion, the interference suppression portion 32 may be provided at a location other than the central side of the container mounting region 26 or in addition to the central side of the container mounting region 26.

[0058] The above-described setter 10 is provided with the interference suppression portion 32 in a region having a size of 1 / 5 or more and 1 / 2 or less of the size of the container mounting region 26 as described in (c) above, but the present invention is not limited thereto. The setter 10 may be configured such that the interference suppression portion 32 forms a region larger than 1 / 2 of the size of the container mounting region 26, or may be provided in a region having a size of less than 1 / 5 of the size of the container mounting region 26.

[0059] The above-described setter 10 is configured such that the setter main body portion 20 is formed of a ceramic plate body and the wear-resistant region 28 is formed by coating the second surface 24 with a glaze as described in (d) above, but the present invention is not limited thereto. The setter 10 may be configured to improve the wear resistance by other chemical methods or mechanical methods instead of or in addition to coating the wear-resistant region 28 with a glaze as described above.

[0060] As described above, the setter 10 has the upright portion 40 that rises from the first surface 22 of the setter main body 20 and is formed to surround the container mounting area 26 as described in (e) above, but the present invention is not limited to this. As shown in FIGS. 10 and 11, the setter 10 may be provided with the upright portion 40 so as to surround the entire container mounting area 26, or may be configured without the upright portion 40 as shown in FIGS. 12 and 13. In addition, in both the case where the upright portion 40 is provided over the entire circumference and the case where the upright portion 40 is not provided, the interference suppression portion 32 may be configured by a concave portion as shown in FIGS. 10 and 12, or may be configured by a hole as shown in FIGS. 11 and 13. Further, in FIGS. 10 to 13, the case where the opening shape of the interference suppression portion 32 is circular is illustrated, but the opening shape of the interference suppression portion 32 may be other than circular.

[0061] As described above, the setter 10 has the cushioning material 42 applied to the entire upright portion 40 as described in (f) above, but the present invention is not limited to this. When the cushioning material 42 is provided on the upright portion 40 in the setter 10, if the cushioning material 42 is provided on at least the surface of the upright portion 40 facing the container 100 side mounted in the container mounting area 26, the interference between the upright portion 40 and the container 100 can be suppressed. Therefore, the cushioning material 42 may be omitted at other locations. The setter 10 may also be configured without the cushioning material 42 provided on the upright portion 40. Further, the setter 10 has the cushioning material 42 provided on the surface of the upright portion 40 integrally formed with the setter main body 20. However, by providing a resin material or the like forming the cushioning material 42 so as to bulge from the first surface 22 of the setter main body 20, it is also possible to make the resin material serve both as the upright portion 40 and the cushioning material 42.

[0062] The above-described setter 10 has been shown as an example having a configuration in which the setter main body 20 includes a notch 30 as in (g) above, but the present invention is not limited thereto. The setter 10 can be configured not to include the notch 30. Further, although the setter 10 has notches 30 provided on all four sides forming the outer edge of the setter main body 20, the present invention is not limited thereto. For example, the notches 30 can be provided only on a pair of opposing sides and not on the other sides.

[0063] As in (h) above, the setter 10 can be suitably used when the article mounted thereon is a container 100 that is heat-treated together with the object to be heat-treated in a state of containing the object to be heat-treated, but the present invention is not limited thereto. The setter 10 may be used, for example, to place an object to be heat-treated other than the container 100. Further, even when mounting an article other than the container 100, the setter 10 may be used, for example, by stacking the articles while providing gaps in the vertical direction while arranging frames or the like at the ends or corners of the articles.

Example

[0064] Regarding the above-described setter 10, an example will be described in which the optimum value of the size of the interference suppression portion 32 with respect to the size of the container mounting area 26 is derived from the viewpoint of the stability of the container 100 mounted on the container mounting area 26. In this example, in order to examine the influence of providing the interference suppression portion 32 on the stability of the container 100 regardless of the standing portion 40, as the setter 10, as illustrated in FIG. 14, a setter 10 in which the interference suppression portion 32 is formed in a rectangular (substantially square) shape was prepared. Further, in this example, a container 100 having a bottom 102 that is a 45 cm × 45 cm square was prepared. The setter 10 was sized such that the standing portions 40 were arranged almost without a gap at the four corners of the container 100 when the above-described container 100 was mounted on the container mounting area 26. In the present embodiment, while keeping the bottom 102 of the container 100 and the area (mounting area S1) of the container mounting area 26 constant, setters 10 having different sizes (opening areas S2) of the interference suppression portion 32 were prepared. Specifically, as shown in Table 1, setters 10 (setters 10a to 10k) having different opening areas S2 of the interference suppression portion 32 were prepared such that the ratio (S2 / S1) of the mounting area S1 to the opening area S2 changed in the range of 0 / 10 to 10 / 10. Further, the same container 100 after being heat-treated in an electric furnace or the like was mounted on the container mounting area 26 of each of the setters 10a to 10k, and the container 100 was pushed while in this state to check whether the container 100 rotated in the container mounting area 26.

[0065]

Table 1

[0066] The results of the above-described tests are shown in Table 1. In Table 1, those marked with an "x" are the ones where the container 100 rotated, and those marked with an "o" are the ones where the container 100 did not rotate and could be stably supported. As can be seen from referring to Table 1, for the setters 10a, 10b where the ratio (S2 / S1) of the mounting area S1 to the opening area S2 is 0 / 10, 1 / 10, and the setters 10g to 10k where the ratio is 6 / 10 to 10 / 10, the container 100 rotated in the container mounting region 26 in all cases. For setter 10a, since there is no interference suppression portion 32, the convex deformed portion formed on the bottom 102 of the container 100 contacted the surface of the setter main body portion 20, and the container 100 rotated around the contact portion. Also, for setter 10b, although the interference suppression portion 32 is provided, the convex deformed portion formed on the bottom 102 of the container 100 could not be completely accommodated within the interference suppression portion 32, and the non-deformed portion of the bottom 102 could not stably contact the peripheral portion of the interference suppression portion 32, so it is assumed that the container 100 rotated. Also, for setters 10g to 10k, although the interference suppression portion 32 has a size sufficient to accommodate the convex deformed portion formed on the bottom 102 of the container 100, the non-deformed portion of the bottom 102 could not stably contact the periphery of the interference suppression portion 32, so it is assumed that the container 100 rotated. On the other hand, the setters 10c to 10f where the ratio (S2 / S1) of the mounting area S1 to the opening area S2 is 1 / 5 or more and 1 / 2 or less were all able to stably support the container 100 so that it did not rotate in the container mounting region 26. This is presumably because the interference suppression portion 32 related to the setters 10c to 10f has a size sufficient to accommodate the convex deformed portion formed on the bottom 102 of the container 100, and the non-deformed portion of the bottom 102 could stably contact the periphery of the interference suppression portion 32. Therefore, from the test according to this embodiment, it was found that by providing the interference suppression portion 32 in a region having a size of 1 / 5 or more and 1 / 2 or less of the size of the container mounting region 26, a setter 10 capable of stably mounting the container 100 can be provided.

[0067] The invention of the present application is not limited to the configurations described in the above-described embodiments and the like, and can be appropriately modified in design and the like without departing from the scope of the technical idea of the present invention. The constituent elements of each of the above-described embodiments and modification examples may be arbitrarily selected and combined. Further, any constituent element of each of the embodiments and modification examples may be arbitrarily combined with any constituent element described in the means for solving the problems, the form for carrying out the invention, etc., or any constituent element described in the means for solving the problems, the form for carrying out the invention, etc. and a constituent element embodying the same. With respect to these as well, there is an intention to acquire rights in the present application or a divisional application, a change application, etc. based on the present application.

Industrial Applicability

[0068] The setter of the present invention can be suitably used for mounting a container that has been heat-treated together with the object to be heat-treated in a state where the object to be heat-treated is accommodated.

Explanation of Reference Numerals

[0069] 10 Setter 20 Setter main body 22 First surface 24 Second surface 26 Container mounting area 28 Wear-resistant area 30 Notch 32 Interference suppression part 40 Upright part 42 Buffer material 100 Container 102 Bottom 104 Peripheral wall 110 Conveyor

Claims

1. A setter for mounting an article, comprising: a setter main body formed in a plate shape, wherein the setter main body has a first surface on the side where the article is mounted, a second surface opposite to the first surface, and an article mounting area on the first surface where the article is mounted, and a wear-resistant area that is at least as wear-resistant as the first surface is provided on the second surface in an area corresponding to at least the article mounting area. The setter is characterized by this.

2. The setter according to claim 1, characterized in that an interference suppression portion formed of a recess or a hole is provided in the article mounting area.

3. The setter according to claim 2, characterized in that the interference suppression portion is provided in an area having a size of 1 / 5 or more and 1 / 2 or less of the size of the article mounting area.

4. The setter main body is constituted by a ceramic plate, and the wear-resistant area is formed by coating the second surface with a glaze. The setter according to claim 1 or 2 is characterized by this.

5. having a standing portion formed so as to rise from the first surface of the setter main body, and the standing portion is provided so as to surround part or all of the article mounting area. The setter according to claim 1 or 2 is characterized by this.

6. The setter according to claim 4, characterized in that a cushioning material is provided on at least the surface of the standing portion facing the article side mounted in the article mounting area.

7. the setter main body has a notch in the outer peripheral portion of the article mounting area, and when the article is mounted in the article mounting area, the bottom of the article is exposed from the notch on the second surface side. The setter according to claim 1 or 2 is characterized by this.

8. The setter according to claim 1 or 2, characterized in that the article is heat-treated together with a heat treatment object in a state where the heat treatment object is accommodated.

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