JP5419763B2 - Heating container and method of use thereof, and heating jig and method of use thereof - Google Patents

Description

  The present invention relates to a heating storage body for storing and heating an object to be heated and a method for using the same, and a heating jig and a method for using the same.

  The heating process is used in various product manufacturing processes. For example, in a heating process using a furnace, a plurality of objects to be heated are simultaneously heated by housing and heating a plate or a shelf set on which the objects to be heated are placed in the furnace. (For example, Patent Document 1).

Japanese Patent Laid-Open No. 10-311686

  However, when a plurality of objects to be heated are placed on a plate or a shelf set and heated simultaneously, the shelf assembly itself that stores the objects to be heated absorbs heat, so the ambient temperature around each object to be heated is The amount of heat received by each object to be heated varies.

  In view of the above problems, an object of the present invention is to store or place a plurality of objects to be heated and to heat them simultaneously, and the objects to be heated or stored at the time of heating An object of the present invention is to provide a heating storage body and a method for using the same, and a heating jig and a method for using the same.

  The present invention completed in order to solve the above-mentioned problems is a heating container, a method for using the heating container, a heating jig, and a heating jig.

[1] A plurality of placement units in which a placement surface on which the object to be heated is placed is provided on a part of the surface, the previous placement surface provided in one previous placement unit, and the first placement unit. A plurality of mounting portions that are detachably fixed so that the plurality of mounting portions are stacked so that the plurality of mounting portions are stacked. The mounting unit includes a mounting unit provided with the mounting surface having a thermal emissivity different from that of the mounting surface provided in the other mounting unit. Storage body.

[2] Before the placement portion has a plate shape, the placement surface is provided on one of the two front and back surfaces of the plate shape, and the placement portion is provided on the one placement portion. The plurality of placement units are stacked with a space between the placement surface and the surface opposite to the previous placement surface of the previous placement unit disposed adjacent to the first placement unit. The heating container according to the above [1].

[3] The heating container according to [2], wherein the plate-shaped mounting portion has the same thermal emissivity between the mounting surface and a surface opposite to the mounting surface.

[4] A plurality of single units provided with the mounting unit described above and the fixing unit coupled to the mounting unit are provided, and the mounting surface provided on the single unit and adjacent to the single unit. [1] The fixing portion provided on one of the single units is detachably connected to the other single unit so that the plurality of single units are stacked with a space between the arranged single units. ] The heating container according to any one of [3] to [3].

[5] Using the heating container according to any one of [1] to [4], the heated object is placed on the heating container by placing the heated object on the placement surface. In the case where the object to be heated is heated together with the heating container by the heating means, the ascending order of the thermal emissivity of the mounting surface provided in each of the mounting units described above is set in each of the above-described mounting units. A method of using the heating container, wherein the plurality of mounting portions are stacked and used so as to correspond to descending order of the atmospheric temperature of the space facing the surface.

[6] Using the heating container according to any one of [1] to [4], the thermal emissivity of the placement surface provided in each of the placement portions is disposed higher. The object to be heated is placed on the placement surface while stacking the plurality of placement parts so that the thermal emissivity of the placement surface provided in the placement part is equal to or higher than the thermal emissivity. Are stored in the heating storage body, the heating storage body is stored in a storage chamber surrounded by a wall, and the temperature of the atmosphere in the storage chamber is increased, whereby the object to be heated is heated. How to use the heating container that heats together.

[7] One of the two front and back surfaces having a plate shape is a mounting surface on which the object to be heated is mounted, and is described above than the thermal emissivity of the edge side portion of the mounting surface. A heating jig with a large thermal emissivity at the center of the mounting surface.

[8] The mounting surface according to [7], wherein the placement surface is formed by aligning and aligning one surface of two front and back surfaces of a plurality of plate-shaped members on substantially the same plane. Heating jig.

[9] Using the heating jig according to [7] or [8], the heating jig in which the object to be heated is placed on the placement surface is housed in a housing chamber surrounded by a wall. And the usage method of the heating jig | tool which heats the said heating jig | tool with the said to-be-heated body by the radiant heat transfer from the said wall part.

  The heating storage body of the present invention can store a plurality of objects to be heated and simultaneously heat them, and can reduce the difference in the amount of heat received by the plurality of stored objects to be heated. The method of using the heating storage body of the present invention can simultaneously heat a plurality of objects to be heated and reduce the difference in the amount of heat received by the objects to be heated during heating.

  The heating jig of the present invention makes it possible to place a plurality of objects to be heated and simultaneously heat them, and to reduce the difference in the amount of heat received by the plurality of objects to be heated during heating. . The method for using the heating jig of the present invention can simultaneously heat a plurality of objects to be heated and reduce the difference in the amount of heat received by the objects to be heated during heating.

It is a perspective view of the shelf assembly which is one Embodiment of the storage body for a heating of this invention. It is a perspective view of one shelf which comprises the shelf assembly shown in FIG. It is sectional drawing of the shelf group which piled up the shelf shown in FIG. It is a schematic diagram of the other shelf assembly which is one Embodiment of the storage body for a heating of this invention. It is a schematic diagram of the furnace provided with the shelf assembly which is one Embodiment of the storage body for a heating of this invention. It is a figure showing the thermal emissivity in wavelength 1.6-3.6 micrometers about various materials. It is a perspective view of the shelf which is one embodiment of the heating jig of the present invention. It is a figure for demonstrating regarding the thermal emissivity of the mounting surface of the shelf shown in FIG. It is a perspective view of the shelf assembly which is one Embodiment of the heating jig of this invention. It is a figure for demonstrating regarding the thermal emissivity of the mounting surface of the shelf assembly shown in FIG. It is a schematic diagram of the electric furnace which accommodated the shelf set of Example 1 and Comparative Example 1. It is a graph showing the heat curve of the atmospheric temperature in the furnace of the electric furnace shown in FIG. 11, and the temperature difference in the shelf set of Example 1 and Comparative Example 1. It is a graph showing the temperature in each place of the shelf group of Example 1 and the comparative example 1 in the time shown to A in FIG. It is a graph showing the temperature in each place of the shelf group of Example 1 and the comparative example 1 in the time shown to B in FIG. It is a graph showing the temperature in each place of the shelf group of Example 1 and the comparative example 1 in the time shown to C in FIG. It is a schematic diagram of the electric furnace which accommodated the shelf groups of Comparative Examples 2 and 3. It is a graph showing the heat curve of the atmospheric temperature in the furnace of the electric furnace shown in FIG. It is a graph showing the temperature in each place of the shelf group of the comparative examples 2 and 3 in the time shown to D in FIG. It is a graph showing the temperature in each place of the shelf group of the comparative examples 2 and 3 in the time shown to E in FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the following embodiments, and changes, modifications, and improvements can be added without departing from the scope of the present invention.

1. Heating container:
The heating storage body according to the present invention includes a plurality of placement portions provided on a part of a surface of a placement surface on which a heated object is placed, a placement surface provided on one placement portion, and the 1 A fixing portion that detachably fixes the plurality of placement portions so that the plurality of placement portions are stacked with a space between the placement portion and the placement portion disposed next to the placement portion, The plurality of placement units include a placement unit provided with a placement surface having a thermal emissivity different from the thermal emissivity of a placement surface provided in another placement unit. And

  In the heating storage body of the present invention, a plurality of mounting portions are stacked, and a plurality of heating target bodies can be stored by mounting the heating target bodies on the mounting surface of each mounting portion. Since the heating storage body of the present invention can store and heat a plurality of objects to be heated, productivity can be improved.

  In the heating storage body of the present invention, a plurality of spaces are sandwiched and stacked between adjacent placement portions, and the objects to be heated are respectively stored in the plurality of spaces and heated simultaneously. When heating the heating storage body of the present invention, there may be variations in the ambient temperature of the plurality of spaces in which the object to be heated is stored. In such a case, the object to be heated housed in the high ambient temperature space receives a large amount of heat from the atmosphere gas, and the object to be heated housed in the low atmosphere temperature space receives a small amount of heat from the atmosphere gas.

  The heating storage body of the present invention is a mounting unit in which a plurality of mounting units are provided with a mounting surface having a thermal emissivity different from the thermal emissivity of a mounting surface provided in another mounting unit. And the order in which the plurality of placement units are stacked can be changed, or a specific placement unit can be replaced with another placement unit. For this reason, the storage body for heating according to the present invention has a large heat emissivity of the mounting surface facing the space where the ambient temperature becomes low when the object to be heated is stored and heated, and faces the space where the ambient temperature becomes high. In order to reduce the thermal emissivity of the mounting surface, it is possible to apply a method in which the order of the plurality of mounting parts is determined and stacked (details will be described later). In this method of use, when the amount of heat received from the atmosphere gas is small, the object to be heated receives a lot of heat due to radiant heat transfer from the mounting surface, and when the amount of heat received from the atmosphere gas is large, the mounting surface Receives less heat due to radiant heat transfer from. Therefore, in the heating storage body of the present invention, when a plurality of heated bodies are stored and heated, the difference in the amount of heat received by each heated body can be reduced.

  In the heating storage body of the present invention, the mounting portion has a plate shape, the mounting surface is provided on one of the two front and back surfaces of the plate shape, and the mounting portion is provided on one mounting portion. It is preferable that a plurality of mounting portions are stacked with a space between the surface and a surface opposite to the mounting surface of the mounting portion disposed on the first mounting portion.

  In this embodiment, the two front and back surfaces of the plate-shaped mounting portion face the space for storing the heated object, and the mounting portion is likely to receive heat from the atmospheric gas in the space for storing the heated object. . Therefore, in this embodiment, the placement unit can absorb heat from the atmospheric gas and efficiently transmit this heat to the object to be heated by radiation heat transfer from the placement surface. Further, in the embodiment in which the thickness of the plate-shaped mounting portion is reduced, the heat capacity of the mounting portion is reduced, so that the temperature of the mounting portion is rapidly increased and the radiant heat transfer from the mounting surface to the object to be heated is performed. Is done efficiently.

  In the embodiment having the plate-shaped mounting portion, it is more preferable that the mounting portion has the same thermal emissivity between the mounting surface and the surface opposite to the mounting surface.

  In this embodiment, when the mounting surface is provided with a mounting surface having a high thermal emissivity, the thermal emissivity of the surface on the opposite side is also high. Since a high thermal emissivity means a high heat absorption rate, in this embodiment, the plate-shaped mounting portion provided with the mounting surface having a high thermal emissivity is the mounting surface and its mounting surface. More heat can be absorbed from the opposite surface. As a result, a difference in the amount of heat absorbed by the mounting portion is clearly generated between the mounting portions in accordance with the thermal emissivity of the mounting surface. Therefore, in this embodiment, each mounting portion reflects the action due to the difference in thermal emissivity of the mounting surface more clearly, with respect to the heated object mounted on each mounting surface. Different amounts of heat can be provided by radiant heat transfer.

  The heating storage body of the present invention includes a plurality of single units provided with a mounting unit and a fixing unit coupled to the mounting unit, and a mounting surface provided in one single unit and the one single unit next to each other. It is preferable that a fixing portion provided in one single unit is detachably connected to another single unit so that a plurality of single units are stacked with a space between the single unit and the other unit.

  In this embodiment, it becomes easy to attach and detach a single unit constituting the heating storage unit and to change the arrangement of the single unit, and it is also possible to move the heating storage unit as it is in a state where the mounting portions are stacked. Therefore, when the heating container is accommodated in the electric furnace and heated, the heated object is placed on the mounting surface in advance outside the furnace, and the heated container in the state in which the heated object is accommodated is left as it is. It can be quickly heated by moving into an electric furnace. Moreover, in this embodiment, since the stacking of the single unit is easy, it is possible to easily cope with the change of the heating condition in the electric furnace by changing the arrangement of the single unit.

  Hereinafter, the content of the heating container of the present invention will be described in more detail by showing a specific example of the embodiment of the heating container of the present invention.

  FIG. 1 is a perspective view of a shelf assembly 21 which is an embodiment of the heating storage body of the present invention. FIG. 2 is a perspective view of one shelf 23a, 23b constituting the shelf assembly 21 shown in FIG.

Referring to FIG. 2, the shelves 23 a and 23 b include shelf plates 25 a and 25 b and a support portion 29. The support portion 29 is connected to one of the two front and back surfaces of the shelf boards 25a and 25b. The shelf board 25a and the shelf board 25b have different surface heat emissivities. Thermal emissivity epsilon _a surface of the shelf 25a is smaller than the thermal emissivity epsilon _b shelf 25b. The to-be-heated body 31 can be mounted on the surface above the shelf plates 25a and 25b of the shelves 23a and 23b.

  If one shelf 23b is placed on the floor 41 with the support 29, another shelf 23b is placed on the shelf 25b of the shelf 23b, and the shelf 23a is placed on the shelf 25b of the upper shelf 23b. The shelf assembly 21 shown in FIG. Referring to the upper two shelves 23a and 23b in the shelf assembly 21 of FIG. 1, when the support portion 29 is placed on the shelf 25b of the lower shelf 23b, the shelf 23a and the shelf 25a of the shelf 23a A space S is created between the shelf plate 25b of 23b.

  Unlike the embodiment shown in FIGS. 1 and 2, the shelves 23 a and 23 b may be stacked in such a posture that the support portion 29 is upward and the shelf plates 25 a and 25 b are downward (not shown). That is, on the support part 29 of the shelf 23a, the shelf board 25b of another shelf 23b is placed and stacked. At this time, if the surface to which the support portion 29 of the shelf plate 25b is not connected is attached to the support portion of the lower shelf 23a and stacked, the shelf assembly 21 is just inverted in the form of the shelf assembly 21 shown in FIG. Can be assembled. In the case where the shelf assembly 21 shown in FIG. 1 is turned upside down, the lower surface of the shelf 25a of the lowermost shelf 23a (the surface not connected to the support portion 29) is entirely on the floor 41. Contact (not shown). For this reason, only the bottom shelf 25 a receives heat from the floor 41 due to contact with the floor 41. From the standpoint of reducing the temperature difference between the shelf plates 25a and 25b, the lowest level as shown in FIGS. The shelves 23 a and 23 b are preferably installed with the support 29 attached to the floor 41 so that the shelf boards 25 a and 25 b do not directly contact the floor 41.

  FIG. 4 is a schematic view of another shelf assembly 21 which is an embodiment of the heating storage body of the present invention. In the shelf assembly 21 shown in this figure, the shelf plates 25a and 25b are fixed at a position away from the floor 41 by the support portion 29 connected thereto, and the length of the support portion 29 is different when the shelves 23a and 23b are compared with each other. ing. Therefore, the plurality of shelf boards 25a and 25b are stacked so that the shelf board 25 of the shelf 23 having the longer support section 29 is arranged on the shelf board 25 of the shelf 23 having the shorter support section 29. be able to. In the shelf assembly 21 shown in FIG. 4, each shelf 23a, 23b is supported by its own support portion 29 contacting and supporting the floor 41 without contacting the other shelves 23a, 23b. , 25b from the floor 41 is defined.

  FIG. 5 is a schematic diagram of the furnace 11 provided with the shelf assembly 21 which is an embodiment of the heating storage body of the present invention. A plurality of receiving portions 27 are provided so as to protrude from the furnace wall 14 toward the furnace interior 12, and the plurality of receiving portions 27 are arranged side by side in the vertical direction. By providing each receiving portion 27 with shelf plates 25a and 25b, a shelf assembly 21 is formed in which a plurality of shelf plates 25a and 25b are stacked with a space in the vertical direction. The shelf assembly 21 shown in FIG. 5 includes shelf plates 25 a and 25 b and a receiving portion 27 that is substantially integrated with the furnace wall 14.

FIG. 6 represents thermal emissivity at wavelengths of 1.6 to 3.6 μm for various materials measured by the present inventors. The thermal emissivity of silicon carbide and SiO ₂ (existing as an oxide film on the silicon carbide surface) (SiC = 98 mass%, SiO ₂ = 2 mass%, porosity 17%) is “black” at room temperature (25 ° C.). “Triangle”, 1000 ° C. is indicated by “black circle”. The emissivity at normal temperature (25 ° C.) of a mixture of titanium oxide and SiO ₂ (TiO = 50 mass%, SiO ₂ = 50 mass%, porosity 20%) is indicated by “black square”. The thermal emissivity of cordierite (2MgO · 2Al ₂ O ₃ · 5SiO ₂ = 100 mass%, porosity 20%) at room temperature (25 ° C.) is indicated by “open circle”. When the thermal emissivity of the alumina material (Al ₂ O ₃ = 92 mass%, SiO ₂ = 8 mass%, porosity 15%) is normal temperature (25 ° C.), “white square”, and 1000 ° C. This is indicated by “Open diamond”. The thermal emissivity of an alumina material (Al ₂ O ₃ = 99 mass%, SiO ₂ = 1 mass%, porosity 1%) at room temperature (25 ° C.) is indicated by “open triangle”. The emissivity of silicon carbide and SiO ₂ and titanium oxide and SiO ₂ at wavelengths of 1.6 to 2.6 μm is about 0.8 to about 0.9 at both normal temperature (25 ° C.) and high temperature (1000 ° C.). . On the other hand, the emissivity of cordierite and an alumina material composed of alumina and SiO _{2 at} a wavelength of 1.6 to 2.6 μm is about 0.1 to about 0.1 at both normal temperature (25 ° C.) and high temperature (1000 ° C.). 0.25.

  Radiant heat transfer is a phenomenon in which heat is transferred from a hot object to a cold object by radiation and absorption. The thermal emissivity varies depending on the type of substance, the temperature of the substance, and the wavelength. Therefore, the amount of heat transferred by radiant heat transfer, the so-called radiant heat transfer amount, is determined by a complicated phenomenon involving a plurality of factors.

  From the relationship between the amount of radiant heat from a black body having a thermal emissivity of 1 and the wavelength peak, for example, the radiant heat amount at 1000 ° C. has a peak at a wavelength of 2.3 μm, and similarly at 1.9 μm at 1250 ° C. At 1500 ° C., a peak of radiant heat appears at 1.6 μm (not shown). From this, it can be understood from the analysis of Planck's equation that the thermal emissivity at a wavelength of 2.3 μm or less has a large effect on radiant heat transfer in a temperature range exceeding 1000 ° C. in a black body. However, it is well known that black bodies are ideal.

  Alumina refractories are used for a base material of a shelf assembly for storing a structural material of a firing furnace (a refractory material used for a furnace wall or the like) and an object to be heated. The thermal emissivity of alumina refractories was known as 0.65 (see, for example, “Chemical Engineering Handbook” (published by Maruzen)). Conventionally, when a heated object is heated using a structural material or a shelf set of a firing furnace made of an alumina refractory, since the thermal emissivity of the alumina refractory is 0.65, other than the alumina refractory Therefore, it was not necessary to control the thermal emissivity using the above materials, and the temperature distribution generated in the shelves was considered inevitable.

However, the present inventors have found that alumina refractories such as shown in FIG. 6, SiC containing SiO _2, and the measurement results of the radiation at a wavelength of 2μm longitudinal band of titanium oxide containing SiO _2, this wavelength region It has been confirmed that the thermal emissivity of the material is different from the values described in the above-mentioned documents and the like (specific numerical values of the thermal emissivity are described above).

  Therefore, the present inventors pay attention to adjusting the thermal emissivity of a heating storage body (for example, a heating shelf assembly) that stores the heated body when the heated body is heated. It is intended to reduce the width of the temperature distribution generated in the group.

The shelf assembly 21 shown in FIGS. 1, 4 and 5 includes a shelf 23a having a shelf 25a made of an alumina material and a shelf 23b having a shelf 25b made of a mixture of titanium oxide and SiO _2. If it is comprised by this, it will become the shelf assembly 21 which assembled the shelf boards 25a and 25b from which the thermal emissivity of the surface which mounts the to-be-heated body 31 differs.

Or the shelf 23a which has the shelf board 25a made from an alumina material is produced so that two sets of the shelf sets 21 can be made, and the surface of the shelf board 25a of the shelf 23a corresponding to one set of the shelf sets 21 is produced. Is coated with a coating layer formed of a mixture of titanium oxide and SiO ₂ , thereby forming a shelf group 21 composed of shelf plates 25a and 25b having different heat emissivities on the surface on which the object to be heated 31 is placed. it can.

As described above, the heating storage body of the present invention has a first placement portion having a placement surface made of the first material, and a placement surface of the first placement portion larger than the first material. It can also be set as the embodiment containing the 2nd mounting part provided with the mounting surface covered with the 2nd material which has thermal emissivity. An embodiment in which the placement surface of the first placement portion is covered with a film made of the second material can be cited as an example of the placement surface of the second placement portion (see examples described later). In the case of an embodiment in which a coating made of the second material is used, since the coating can be formed by spraying or the like, a second mounting portion having the same shape as the first mounting portion can be obtained by an easy process. It can be mentioned as an advantage that it can be suppressed to a slight increase in weight of the film and an increase in heat capacity. For example, in the case of an embodiment in which the mounting surface of the first mounting portion made of alumina as the first material is coated with a film made of a mixture of titanium oxide and SiO ₂ as the second material, titanium oxide And SiO ₂ mixture are easily adsorbed on the alumina material. In addition, when this embodiment is applied in a furnace, when the first thermal history is received, the adsorbed mixture itself, and between the adsorbed mixture and the alumina material, the mixture itself or the alumina material is used. It is also excellent in that separation between the adsorbed mixture and the alumina material hardly occurs because fixation and sintering due to the generation of the vitreous material are caused by the influence of a small amount of inevitable impurities contained.

  The following usage method (hereinafter referred to as “method of using the heating storage body of the present invention”) can be applied to the above heating storage body.

2. How to use the heating container:
1st Embodiment of the usage method of the heating storage body of this invention uses the above-mentioned heating storage body, and stores a to-be-heated body in a heating storage body by mounting a to-be-heated body in a mounting surface. Then, when the object to be heated is heated together with the heating container by the heating means, the increasing order of the thermal emissivity of the mounting surfaces provided in the respective mounting portions is in the space facing each mounting surface. A plurality of mounting portions are used in a stacked manner so as to correspond to descending order of the atmospheric temperature.

  In the first embodiment, when the object to be heated stored in the heating storage body receives a small amount of heat from the atmosphere gas in the space facing the mounting unit surface storing the heating target body, When the amount of heat received by the radiant heat transfer is large and the amount of heat received from the atmospheric gas in the space is large, the amount of heat received by the radiant heat transfer from the mounting surface on which this is placed is small. Therefore, in the first embodiment of the method for using the heating storage body of the present invention, the difference in the total amount of heat received by the stored body to be heated is small, so that the heating degree is within a predetermined range without unevenness. In addition, a plurality of objects to be heated can be heated simultaneously.

  In the first embodiment, since the difference in the total amount of heat received by the heated body is reduced as described above, it is less necessary to reduce the heating rate so as not to generate a temperature distribution in the heated body ( For example, in the case of heating using a furnace, it is no longer necessary to lower the temperature increase rate of the furnace atmosphere temperature, the productivity is improved, and the degree of freedom in temperature profile during heating is increased (for example, heating using a furnace). In this case, the setting range of the temperature rise rate of the furnace atmosphere temperature is widened).

  The second embodiment of the method for using the heating storage body of the present invention uses the heating storage body described above, and the thermal emissivity of the mounting surface provided in each of the above-described mounting portions is arranged higher. The object to be heated is placed on the placement surface while stacking a plurality of placement parts so that the heat emissivity of the placement surface provided in the placement part is equal to or higher. And storing the heating storage body in a storage chamber surrounded by a wall, and heating the heated body together with the heating storage body by raising the ambient temperature in the storage chamber.

  Since the atmosphere gas in the storage chamber rises as the temperature rises, the atmosphere temperature of the space tends to increase as the space facing the placement surface of the placement portion disposed further upward. Therefore, the amount of heat received from the atmospheric gas increases as the object to be heated is placed on the placement surface of the placement unit disposed above. In the second embodiment, the mounting section provided with the mounting surface provided with the thermal emissivity of each mounting section is arranged so that the variation in the amount of heat received from the atmospheric gas can be corrected. It becomes more than the thermal emissivity of the provided mounting surface. That is, when the amount of heat received from the atmospheric gas in the space in which the object to be heated stored in the heating storage body is small, much heat is received by the radiant heat transfer from the mounting surface on which the object is mounted. When the amount of heat received from the atmospheric gas in the space is large, the amount of heat received by radiant heat transfer from the mounting surface on which the space is placed is small.

  Therefore, in the second embodiment of the method for using the heating storage body of the present invention, the difference in the total amount of heat received by the stored body to be heated is small, so that the degree of heating is within a predetermined range without unevenness. As described above, a plurality of objects to be heated can be heated simultaneously.

  Also in the second embodiment, since the difference in the total amount of heat received by the heated object is reduced as described above, the heating speed (for example, the atmospheric temperature in the accommodation chamber is set so as not to generate a temperature distribution in the heated object). The necessity for lowering the (temperature increase rate) is reduced, the productivity is improved, and the degree of freedom of the temperature profile (for example, the heat curve of the ambient temperature in the accommodation chamber) during heating is increased.

  Hereinafter, the content of the method of using the heating container of the present invention will be described in more detail by showing a specific example of the embodiment of the method of using the heating container of the present invention.

FIG. 3 is a cross-sectional view of the shelf assembly 21 in which three shelves 23a and two shelves 23b shown in FIG. The shelf plates 25a are stacked in five stages, when referred to as the space S ₁ to S ₅ upwardly the space above the 25b from below, the atmosphere in the heating furnace houses a rack set 21 into a heating furnace when increasing the temperature, since the atmospheric gas in the furnace rises as those of the high temperature, the temperature T ₁ through T ₅ of the atmospheric gas present in the space S ₁ to S ₅ are T _5> T ₄ > T ₃ > T ₂ > T ₁ . Here, when the thermal emissivity ε _a of the surface of the shelf 25a is smaller than the thermal emissivity ε _b of the surface of the shelf 25b (ε _a <ε _b ), as shown in FIG. When the shelves 23a and 23b are stacked such that the shelf plate 25b and the shelf plate 25b are arranged on the lower side, the ascending order of the thermal emissivity of the shelf plates 25a and 25b (from the upper level of the shelf set, ε _a = _{ε a = ε a <εb =} εb) is, the shelf plates 25a, descending level of the ambient temperature _T 1 through T ₅ of the space _S 1 to S ₅ facing the loaded was surface of the object to be heated 31 in 25b ( From the upper level of the shelf set, T ₅ > T ₄ > T ₃ > T ₂ > T ₁ ).

In the shelf assembly 21 shown in FIG. 3, the ambient temperatures T ₁ and T ₂ of the spaces S ₁ and S ₂ on the _first and _second shelf boards 25b from the bottom are the ambient temperatures T _{3 to} T of the spaces S _{3 to} S _5. since lower than _5, the heated body 31 resting on the shelf plate 25b is heat receiving the atmospheric gas in the space S _1, S ₂ is small. However, thermal emissivity epsilon _b shelf 25b is larger than the thermal emissivity of the shelves 25a epsilon _a, heated object 31 resting on the shelf plate 25b is heated body resting on shelves 25a Compared with 31, it receives a larger amount of heat by radiant heat transfer from the shelf 25b on which it is placed. Therefore, when the heated bodies 31 mounted on the respective shelf plates 25a and 25b are compared, there is little difference in the total amount of heat received from the atmospheric gas and the amount of heat received by the radiant heat transfer from the shelf plate on which the heated body 31 is mounted.

3. How to use the heating jig and the heating jig:
The heating jig of the present invention includes a mounting portion having a plate shape, and one of the two front and back surfaces serving as a mounting surface for mounting the object to be heated. The thermal emissivity of the central part of the substrate is larger than the thermal emissivity of the edge part of the mounting surface.

  The heating jig of the present invention is used when the object to be heated placed on the placement surface is heated by a heating method in which the placement portion raises the temperature from the edge side portion toward the center portion by the heat source. It is preferable (details will be described later). In the heating jig of the present invention, since the thermal emissivity of the center side portion of the mounting surface is larger than the thermal emissivity of the edge side portion of the mounting surface, the central portion of the mounting surface is more than the edge side portion of the mounting surface. Even absorbs a lot of heat. And in the center part of a mounting surface, more heat is transmitted to a to-be-heated body by radiant heat transfer than the edge side part of a mounting surface. When a heating method is applied in which the temperature of the placement part is increased from the edge part toward the center part by the heat source, the heated object is received from the heat source when placed on the edge part of the placement surface. The amount of heat received by the radiant heat from the mounting surface is small and the amount of heat received by the radiant heat from the mounting surface is small, and when it is placed at the center of the mounting surface, the amount of heat received from the heat source is small Will increase. Therefore, when a heating method is employed in which the placement portion raises the temperature from the edge portion toward the central portion, the total amount of heat received by the heated object is placed on the central portion of the placement surface. The difference is small between what is done and what is placed on the edge side portion of the placement surface.

  In the heating jig according to the present invention, the mounting portion is made of a plurality of plate-shaped members, and the mounting surface has one of the two front and back surfaces of the plurality of plate-shaped members on substantially the same plane. It is preferably formed by aligning them side by side. In this embodiment, the area of the mounting surface can be increased, and more objects to be heated can be heated at the same time. In addition, after placing the object to be heated on the surface constituting a part of the mounting surface of each plate-shaped member and moving them into the furnace, the plurality of plate-shaped members in the furnace A single heating jig can be combined. Therefore, this embodiment can be freely adapted to different work environments such as the presence or absence of a work space.

The heating jig of the present invention is formed from a second material having a thermal emissivity higher than that of the first material at the center portion of one of the two front and back surfaces of the plate-shaped member made of the first material. An embodiment in which the thermal emissivity of the central portion of the mounting surface is made larger than the thermal emissivity of the edge side portion of the mounting surface by covering the member is also applicable. Examples of such a mounting surface include an embodiment in which the surface of one of the plate-like members made of the first material is covered with a film made of the second material. In the case of the embodiment in which the film made of the second material is coated, the film can be formed by spraying or the like. Therefore, the film can be easily applied even when the contour of the portion made of the second material has a complicated shape. It can be mentioned as a feature that can be an advantage that it can be suppressed to a slight increase in weight and heat capacity. For example, in the case of an embodiment in which the mounting surface of the first mounting portion made of alumina as the first material is coated with a film made of a mixture of titanium oxide and SiO ₂ as the second material, titanium oxide And SiO ₂ mixture are easily adsorbed on the alumina material. In addition, when this embodiment is applied in a furnace, when the first thermal history is received, the adsorbed mixture itself, and between the adsorbed mixture and the alumina material, the mixture itself or the alumina material is used. It is also excellent in that separation between the adsorbed mixture and the alumina material hardly occurs because fixation and sintering due to the generation of the vitreous material are caused by the influence of a small amount of inevitable impurities contained.

  The method of using the heating jig of the present invention uses the above-mentioned heating jig, accommodates the heating jig in which the object to be heated is placed on the placement surface, in the accommodation chamber surrounded by the wall, The heating jig is heated together with the object to be heated by radiation heat transfer from the section. When the heating jig is accommodated in the housing chamber surrounded by the wall and the heating jig is heated together with the heated object by radiant heat from the wall, the mounting portion is moved from the edge portion to the central portion. Increase the temperature toward. Therefore, the total amount of heat received by the object to be heated by the radiant heat transfer from the wall and the radiant heat transfer from the mounting surface due to the effect due to the difference in the thermal emissivity of the mounting surface is the center of the mounting surface. The difference between the one placed on the portion and the one placed on the edge side portion of the placement surface is reduced.

  Hereinafter, the content of the heating jig of the present invention and the method of using the heating jig will be described in more detail by showing specific examples of embodiments of the heating jig of the present invention.

  FIG. 7 is a perspective view of a shelf 51 which is an embodiment of the heating jig of the present invention. In the shelf 51 shown in this figure, the heated object 31 is placed with one of the two front and back surfaces of the shelf plate 53 as a placement surface 55. A support portion 57 is coupled to the surface of the shelf board 53 opposite to the mounting surface 55, and is held by the support portion 57 in a form having a space between the floor 41 and the shelf board 55.

FIG. 8 is a diagram for explaining the thermal emissivity of the placement surface 55 of the shelf 51 shown in FIG. When the shelf 51 shown in FIG. 7 is housed in a furnace and the object to be heated is heated by radiant heat transfer from the furnace wall, the shelf plate 53 has regions P _a , P _b , _{P c,} P d, heat is transferred in the order of _{P e,} appears as a difference in the surface temperature of the area _P a to P _e in such heat transferred how the mounting surface 55. Therefore, in the initial stage of heating, the surface temperatures T _{a to} T _e of the regions P _{a to} P _e of the placement surface 55 of the shelf plate 53 are in a relationship of T _a > T _b > T _c > T _d > T _e . Become. Similarly to the distribution of the surface temperature of the mounting surface 55, when the magnitude of the amount of heat received by the heated body 31 by the radiant heat transfer from the furnace wall is arranged in order from the largest to the smallest, the region P _a , P _b , P _c , P _d , and _Pe are placed in order of the amount of heat. On the other hand, in the shelf 51, the thermal emissivity of the areas P _{c to} P _e (dot pattern in FIG. 8) of the placement surface 55 is larger than the thermal emissivities of the areas P _a and P _b . Therefore, the object to be heated 31, when placed in the region P _c to P _e of the mounting face 55 is often heat by radiant heat transfer from the mounting surface 55, the area of the mounting face 55 P _a , when it is placed on the P _b is the amount of heat by radiant heat transfer from the mounting surface 55 is small. Therefore, from the heat and the mounting surface 55 for receiving the radiant heat transfer from the furnace wall for the total amount of heat by radiation heat transfer, of the mounting face 55 area P _a to P _e to the placed in the object to be heated 31 The difference between them is reduced.

  FIG. 9 is a perspective view of a shelf assembly 60 that is an embodiment of the heating jig of the present invention. The shelf assembly 60 shown in this figure is a combination of two shelves 51a and 51b arranged side by side. In the shelves 51a and 51b, the shelves 53a and 53b are supported from the floor 41 side by the support portions 57 having the same length. Therefore, the mounting surfaces 55a and 55b of the shelf plates 53a and 51b are arranged on substantially the same plane. Therefore, when the shelf assembly 60 is configured by arranging the shelves 51a and 51b close to each other as shown in FIG. 9, the shelf assembly 60 has one placement surface 61 in which the placement surfaces 55a and 55b are combined. .

FIG. 10 is a diagram for explaining the thermal emissivity of the mounting surface 61 of the shelf assembly 60 shown in FIG. When the shelf assembly 60 shown in FIG. 9 is housed in a furnace and the shelf assembly 60 is heated together with the heated body 31 by radiant heat transfer from the furnace wall, the shelf assembly 60 has a region from the edge side portion toward the central portion. _{P f, P g, P h} , heat is transferred in the order of _{P i,} appears as a difference in the surface temperature of the region _P f to P _i in such heat transferred how the mounting surface 55. Therefore, in the initial stage of heating, the surface temperatures T _{f to} T _i of the regions P _{f to} P _{i on} the placement surface 61 of the shelf set 60 have a relationship of T _f > T _g > T _h > T _i . Of the edge sides of the shelf 51a and the shelf 51b, the portion where the shelf 51a and the shelf 51b are close to each other becomes a central portion in the shelf assembly 60 in which the shelf 51a and the shelf 51b are assembled. Difficult to receive heat transfer. In the shelf set 60, the thermal emissivity of the areas P _h and P _i (dot pattern in FIG. 10) of the placement surface 61 is larger than the thermal emissivity of the areas P _f and P _g . Therefore, the total amount of heat received by the radiant heat transfer from the furnace wall and the radiant heat transfer from the mounting surface 55 by the same action as the shelf 51 shown in FIG. The difference between the heated bodies 31 placed in the areas P _{f to} P _i is reduced.

  EXAMPLES Hereinafter, although this invention is demonstrated further in detail based on an Example, this invention is not limited to these Examples.

(1) Shelf assembly FIG. 11 is a front view of the shelf assembly 21 accommodated in the furnace 12 of the electric furnace 11. A shelf 23a (outlined in FIG. 11) formed of an alumina material provided with legs 28 (height 20 mm) at each of the four corners of the lower surface of a square (width 200 × length 300 mm) shelf plate 25a; A plurality of shelves 23b (dot pattern in FIG. 11) provided with a coat layer having a thickness of 170 μm on the entire surface of the shelf 23a were prepared (the shelf 23b is a shelf plate 25b provided with a coat layer on the surface of the shelf 25a). Have). The coating layer is a mixture of titanium oxide and SiO ₂ (TiO = 50% by mass, SiO ₂ = 50% by mass, with external formulation, 3% by weight of water glass, 40% by weight of water, and 3% by weight of organic binder PVP (polyvinylpyrrolidone)). % Was provided by spray coating.

(2) Electric furnace The electric furnace 11 has an effective inner dimension of width 500 × depth 500 × height 500 mm, and heaters 13 are respectively placed on the furnace inner wall surfaces 18 of the four furnace walls 14 constituting the side surfaces. Installed (FIG. 11). A furnace temperature control thermocouple 15 was provided from the center of the furnace wall 14 on the ceiling side toward the furnace interior 12.

(3) Heat test:
Shelf assemblies 21 of Example 1 and Comparative Example 1 below were arranged side by side in the furnace 12 of the electric furnace 11 as shown in FIG.

Example 1
The upper 6 tiers constitute a shelves 21 with a coat layer and the lower 7 tiers with a shelf 23b with a coat layer. (Right side in FIG. 11). It should be noted that a pair of left and right sides (rows I and II in FIG. 11) are arranged on the back side of the shelf plates 25a and 25b of the second, fifth, ninth and thirteenth shelves 23a and 23b of the shelf 21 from the open / close door of the electric furnace 11. ) Thermocouples 16 (8 in total).

(Comparative Example 1)
A shelf assembly 21 was formed by stacking 13 shelves 23a without a coat layer and arranged on the left side of the furnace 12 from the open / close door of the electric furnace 11 (left side in FIG. 11). The place where the thermocouple 16 was installed was the same as in Example 1 (rows III and IV in FIG. 11).

  After the electric furnace 11 accommodates the shelf set 21 of Example 1 and Comparative Example 1, the temperature of the atmosphere in the furnace 12 is raised by the heat curve shown in FIG. 12, and the atmosphere temperature in the furnace 12 reaches 1400 ° C. Thereafter, this ambient temperature was maintained. Specifically, the temperature is raised from 25 ° C. to 1300 ° C. in 6.5 hours, then the temperature is raised from 1300 ° C. to 1400 ° C. in 1.0 hour, and then 1400 ° C. is maintained for 3.0 hours. It was. 6.5 hours (elapsed time indicated by A in FIG. 12), 7.5 hours (elapsed time indicated by B in FIG. 12), and 8.9 hours (elapsed time indicated by C in FIG. 12) after the start of heating. The surface temperatures of the shelf boards 25a and 25b measured by the thermocouple 16 installed on the shelf assembly 21 of Example 1 and Comparative Example 1 are shown in the graphs of FIGS. In the graphs of FIGS. 13 to 15, the horizontal axis indicates the surface temperature of the shelf plates 25 a and 25 b measured by the thermocouple 16, and the vertical axis indicates the number of the shelves 23 a and 23 b in the shelf assembly 21. FIG. 12 shows the difference (ΔT) between the maximum temperature and the minimum temperature among the surface temperatures of the shelf boards 25a and 25b measured by the eight thermocouples 16 installed in the shelf assembly 21. From the graph regarding the temperature difference in the shelf assembly shown in FIG. 12, it can be seen that in Example 1, the difference between the maximum temperature and the minimum temperature (ΔT) in the shelf assembly 21 is smaller than in Comparative Example 1.

  From the positional relationship between the furnace wall 14 and the heater 13, the column I of Example 1, the column III of Comparative Example 1, the column II of Example 1, and the column IV of Comparative Example 1 serve as controls. The results of comparison between these control columns will be described below.

  Here, the result of 6.5 hours after the start of heating shown in FIG. 13 will be described. First, in Comparative Example 1 (row III and row IV), the temperature of the upper stage (9th and 13th stages) tended to be higher than the lower stage (2nd and 5th stages). This tendency is considered to be caused by the rise of the heated furnace gas. In column III of Comparative Example 1, the temperature gradually increased from the second stage to the thirteenth stage, and the maximum value of the temperature difference between the second, fifth, ninth, and thirteenth stages was 22 ° C. (2 Temperature difference between the 13th and 13th stages). Also in row IV of Comparative Example 1, the temperature gradually increased from the second stage to the thirteenth stage, and the maximum value of the temperature difference between the second, fifth, ninth, and thirteenth stages was 21 ° C. (2 Temperature difference between the 13th and 13th stages).

  At 6.5 hours after the start of heating shown in FIG. 13, in the column I of Example 1, the temperature of 9 ° C. in the second stage and the temperature of 11 ° C. in the fifth stage compared with the same number of stages in the column III of Comparative Example 1 On the contrary, at the 13th stage, the 1 ° C. temperature was low. In column I of Example 1, the maximum value of the temperature difference between the second, fifth, ninth and thirteenth stages is 12 ° C. (the temperature between the second and fifth stages, and the second and thirteenth stages). Difference), which was significantly smaller than the maximum temperature difference of 22 ° C. in column III of Comparative Example 1 (temperature difference between the second and thirteenth stages). In particular, when the comparison is limited to the fifth, ninth, and thirteenth stages, the maximum value of the temperature difference in the column III of Comparative Example 1 is 13 ° C. (temperature difference between the fifth and thirteenth stages). In contrast, the maximum value of the temperature difference in the column I of Example 1 was extremely significant at 3 ° C. (temperature difference between the fifth and ninth stages and between the ninth and thirteenth stages). It has become smaller. Similarly, when comparing the column II of Example 1 and the column IV of Comparative Example 1, in the column II of Example 1, compared with the same number of stages of the column IV of Comparative Example 1, 9 ° C. in the second stage, At the fifth stage, the 12 ° C. temperature was high, and at the 13th stage, the 3 ° C. temperature was low. In column II of Example 1, the maximum value of the temperature difference between the second, fifth, ninth and thirteenth stages is 9 ° C. (temperature difference between the second and thirteenth stages). It was significantly smaller than the maximum temperature difference of 21 ° C. in column IV (temperature difference between the second stage and the 13th stage). In particular, when the comparison is limited to the fifth, ninth, and thirteenth stages, the maximum value of the temperature difference in the column IV of Comparative Example 1 is 13 ° C. (temperature difference between the fifth and thirteenth stages). In contrast, the maximum value of the temperature difference in column II of Example 1 was extremely significantly reduced to 6 ° C. (temperature difference between the fifth and ninth stages).

  Next, the result of 7.5 hours after the start of heating shown in FIG. 14 will be described. In the column III of Comparative Example 1, the temperature gradually increased from the second stage to the thirteenth stage, and the maximum value of the temperature difference between the second, fifth, ninth and thirteenth stages was 12 ° C. (two stages Temperature difference between the first and the 13th stage). In row IV of Comparative Example 1, the temperature gradually increased from the second stage to the thirteenth stage, and the maximum value of the temperature difference between the second, fifth, ninth, and thirteenth stages was 13 ° C. (2 Temperature difference between the 13th and 13th stages).

  In 7.5 hours after the start of heating shown in FIG. 14, in the column I of Example 1, the temperature was 2 ° C. in the second stage and 3 ° C. in the fifth stage as compared with the same number of stages in the column III of Comparative Example 1. On the contrary, at the 13th stage, the 1 ° C. temperature was low. In column I of Example 1, the maximum value of the temperature difference between the second, fifth, ninth and thirteenth stages is 9 ° C. (temperature difference between the second and thirteenth stages). It was significantly smaller than the maximum temperature difference of 12 ° C. in column III (temperature difference between the second stage and the 13th stage). In particular, when the comparison is limited to the fifth, ninth and thirteenth stages, the maximum value of the temperature difference in the column III of Comparative Example 1 is 6 ° C. (temperature difference between the fifth and thirteenth stages). On the other hand, the maximum value of the temperature difference in the column I of Example 1 was extremely significantly reduced to 2 ° C. (temperature difference between the 5th and 13th stages). Similarly, when comparing the column II of Example 1 and the column IV of Comparative Example 1, in the column II of Example 1, compared with the same number of stages in the column IV of Comparative Example 1, 3 ° C. in the second stage, The third stage had a high 3 ° C. temperature, conversely, the ninth stage had a 1 ° C. temperature, and the thirteenth stage had a 2 ° C. temperature low. In column II of Example 1, the maximum value of the temperature difference between the second, fifth, ninth and thirteenth stages is 8 ° C. (temperature difference between the second and thirteenth stages). It was significantly smaller than the maximum value of 13 ° C. of the temperature difference in row IV (temperature difference between the second and thirteenth stages). In particular, when the comparison is limited to the fifth, ninth, and thirteenth stages, the maximum value of the temperature difference in the column IV of Comparative Example 1 is 8 ° C. (temperature difference between the fifth and thirteenth stages). In contrast, the maximum value of the temperature difference in the column II of Example 1 was extremely significantly reduced to 3 ° C. (temperature difference between the fifth stage and the 13th stage).

  Finally, the result of 8.9 hours after the start of heating shown in FIG. 15 will be described. 8.9 hours after the start of heating is a steady state in which the furnace temperature is maintained at 1400 ° C. Therefore, a large difference in temperature is not recognized between Example 1 (row I and row II) and Comparative example 1 (row III and row IV). This is because the heat transfer in a steady temperature state is balanced by the sum of the amount of heat of reflection and radiation, and can be explained by Boltzmann's law where the sum of emissivity and reflectance is 1.

  The shelf sets 21 of Comparative Examples 2 and 3 below were arranged side by side in the furnace 12 of the electric furnace 11 as shown in FIG.

(Comparative Example 2)
A shelf assembly 21 was formed by stacking 13 shelves 23b with a coat layer and arranged on the right side of the furnace 12 from the open / close door of the electric furnace 11 (right side in FIG. 16). The place where the thermocouple 16 was installed was the same as that in Example 1 (column V and column VI in FIG. 16).

(Comparative Example 3)
A shelf assembly 21 was formed by stacking 13 shelves 23a without a coat layer and arranged on the left side of the furnace 12 from the open / close door of the electric furnace 11 (left side in FIG. 16). The place where the thermocouple 16 was installed was the same as in Example 1 (row VII, row VIII in FIG. 16).

  After the electric furnace 11 accommodates the shelf set 21 of Comparative Examples 2 and 3, the temperature of the atmosphere in the furnace 12 is increased by the heat curve shown in FIG. 17, and after the atmosphere temperature in the furnace 12 reaches 1400 ° C., This ambient temperature was maintained. Specifically, the temperature is raised from 25 ° C. to 1300 ° C. in 6.5 hours, the temperature is raised from 1300 ° C. to 1400 ° C. in 1.0 hour, and then 1400 ° C. is maintained for 3.0 hours. Heated under conditions. After the start of heating, it was installed on the shelf set 21 of Comparative Examples 2 and 3 at 6.5 hours (elapsed time indicated by D in FIG. 17) and 7.5 hours (elapsed time indicated by E in FIG. 17). The surface temperatures of the shelf boards 25a and 25b measured by the thermocouple 16 are shown in the graphs of FIGS. In the graphs of FIGS. 18 and 19, the horizontal axis indicates the surface temperature of the shelf plates 25 a and 25 b measured by the thermocouple 16, and the vertical axis indicates the number of the shelves 23 a and 23 b in the shelf assembly 21.

  In both cases of 6.5 hours and 7.5 hours after the start of heating, the temperature of the shelf assembly is higher in Comparative Example 2 than in Comparative Example 3, because the thermal emissivity of the shelf is larger. it was high. However, the temperature distribution in the shelf assembly was almost the same between Comparative Examples 2 and 3, and the effect of reducing the temperature distribution as in Example 1 was not observed. Therefore, it has been found that even if the thermal emissivity of all the shelves is uniformly increased, the effect of reducing the temperature distribution in the shelves is not produced.

  INDUSTRIAL APPLICABILITY The present invention can be used as a heating storage body for storing and heating a heated body, a method for using the same, and a heating jig and a heating jig.

1: Heating container, 5: Placement part, 7: Fixed part, 9: Placement surface, 11: Furnace (electric furnace), 12: Furnace, 13: Heater, 14: Furnace wall, 15: Furnace temperature Control thermocouple, 16: thermocouple, 17: furnace inner wall surface, 21: shelf assembly, 23, 23a, 23b: shelf, 25: shelf board, 27: receiving part, 28: leg, 29: support part, 31: covered Heating body, 41: floor, 51, 51a, 51b: shelf, 53, 53a, 53b: shelf board, 55, 55a, 55b: placement surface, 57: support section, 60: shelf assembly, 61: placement surface.

Claims (9)

A plurality of placement portions each having a placement surface on which the object to be heated is placed;
The plurality of placement units are stacked so as to have a space between the placement surface provided in the first placement unit and the placement unit disposed next to the first placement unit. A fixing portion that detachably fixes the plurality of placement portions;
The plurality of placement units include the placement unit described above in which the placement surface having a thermal emissivity different from the thermal emissivity of the placement surface provided in the other placement unit is provided. Storage body for heating. The mounting portion has a plate shape, and the mounting surface is provided on one of the two front and back surfaces of the plate shape,
A space is provided between the mounting surface provided on the mounting unit of 1 and the surface opposite to the mounting surface of the mounting unit disposed on the first mounting unit. The heating container according to claim 1, wherein the plurality of mounting portions are stacked.   The heating storage body according to claim 2, wherein in the plate-shaped mounting portion, the thermal emissivity is equal between the mounting surface and a surface opposite to the mounting surface. A plurality of single units provided with the mounting unit described above and the fixing unit coupled to the mounting unit described above,
The single unit is provided with a space between the mounting surface provided on the single unit and the single unit disposed adjacent to the single unit, and the plurality of units are stacked. The heating container according to any one of claims 1 to 3, wherein the fixing portion is detachably connected to the other unit. Using the heating storage body according to any one of claims 1 to 4,
When the heated body is stored in the heating storage body by placing the heated body on the placement surface, and the heated body is heated together with the heating storage body by a heating unit,
The plurality of placements such that the ascending order of the thermal emissivity of the placement surface provided in each placement portion corresponds to the descending order of the atmospheric temperature of the space facing the placement surface. How to use a heating container that stacks parts. Using the heating storage body according to any one of claims 1 to 4,
The thermal emissivity of the mounting surface provided in each of the mounting units is higher than the thermal emissivity of the mounting surface provided in the mounting unit disposed above. Placing the heated body on the placement surface while stacking a plurality of placement portions, and storing the heated body in the heating storage body,
A method of using a heating storage body that houses the heating storage body together with the heating storage body by storing the heating storage body in a storage chamber surrounded by a wall and raising the ambient temperature in the storage chamber . It has a plate-like shape and has a placement portion on which one of the two front and back surfaces is a placement surface for placing the object to be heated,
A heating jig in which the thermal emissivity of the central portion of the mounting surface is greater than the thermal emissivity of the edge side portion of the mounting surface. The mounting portion is composed of a plurality of plate-shaped members,
The heating jig according to claim 7, wherein the placement surface is formed by aligning and aligning one of the two front and back surfaces of the plurality of plate-shaped members on substantially the same plane. Using the heating jig according to claim 7 or 8,
The heating jig in which the object to be heated is placed on the placement surface is housed in a housing chamber surrounded by a wall,
A method of using a heating jig that heats the heating jig together with the heated body by radiant heat transfer from the wall.