JP2020159644A - Beam for support - Google Patents

Beam for support Download PDF

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JP2020159644A
JP2020159644A JP2019061189A JP2019061189A JP2020159644A JP 2020159644 A JP2020159644 A JP 2020159644A JP 2019061189 A JP2019061189 A JP 2019061189A JP 2019061189 A JP2019061189 A JP 2019061189A JP 2020159644 A JP2020159644 A JP 2020159644A
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main body
convex portion
heated
shape
beam main
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JP7305908B2 (en
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雅崇 久保
Masataka Kubo
雅崇 久保
康太 小池
Yasuta Koike
康太 小池
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TYK Corp
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Abstract

To provide a beam for support which suppresses the generation of the partial heating unevenness in an object to be heated after heat treatment.SOLUTION: A beam 1 for support is arranged at the inside of a heating furnace, and in which an upper face thereof is mounted with an object to be heated, and comprises: a bar-shaped beam body part 2; projection parts 3 provided at an upper face 2a of the beam body part 2 and forming a projection shape at the upper part; and joining material parts 4 joining the projection parts 3 to the beam body part 2. In the beam 1 for support, even if the object to be heated is mounted, and is heat-treated, the generation of the partial heating unevenness in the object to be heated caused by the abutting with the projection parts 3 can be suppressed.SELECTED DRAWING: Figure 1

Description

本発明は、被加熱物を熱処理するときに、その上部に被加熱物を載置する支持用ビームに関する。 The present invention relates to a supporting beam on which the object to be heated is placed when the object to be heated is heat-treated.

従来、被加熱物を熱処理するときには、加熱炉が用いられている。そして、被加熱物は、支持用ビーム上に載置された状態で、加熱炉内に配置され、熱処理（加熱）される。具体的には、鋼板等の鉄系金属の板材を熱処理する場合、高温の状態の板材（被加熱物）を支持用ビームの上に載置し、この状態で熱処理している。 Conventionally, a heating furnace has been used when heat-treating an object to be heated. Then, the object to be heated is placed in the heating furnace in a state of being placed on the supporting beam, and is heat-treated (heated). Specifically, when a plate material of an iron-based metal such as a steel plate is heat-treated, a plate material (heated object) in a high temperature state is placed on a supporting beam and heat-treated in this state.

従来の支持用ビームは、棒状（中実の柱状）あるいはパイプ状（中空の柱状）を有しており、高温下でその上面に鉄系金属の板材を載置する。例えば、複数本の支持用ビームに板材を載置し、支持する。板材の支持用ビームと接触する部分は、支持用ビームに加えられた熱が伝わることにより接触しない部分と比べて温度が高くなる。 The conventional support beam has a rod shape (solid columnar shape) or a pipe shape (hollow columnar shape), and an iron-based metal plate is placed on the upper surface thereof at a high temperature. For example, a plate material is placed and supported on a plurality of supporting beams. The temperature of the portion of the plate material that comes into contact with the supporting beam becomes higher than that of the portion that does not come into contact due to the transfer of heat applied to the supporting beam.

この結果、熱処理後（加熱後）の板材は、支持用ビームと接触する部分が、他の部分よりも加熱されて、温度分布が不均一になることに起因する色ムラが発生していた。また、場合によっては、支持用ビームと焼き付きを生じるという問題があった。 As a result, in the plate material after the heat treatment (after heating), the portion in contact with the supporting beam is heated more than the other portions, and color unevenness occurs due to the non-uniform temperature distribution. Further, in some cases, there is a problem that a support beam and seizure occur.

本発明は上記実情に鑑みてなされたものであり、熱処理後の被加熱物に部分的な加熱ムラが生じることを抑えられる支持用ビームを提供することを課題とする。 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a supporting beam capable of suppressing partial heating unevenness in an object to be heated after heat treatment.

上記課題を解決する本発明の支持用ビームは、加熱炉内に配され、その上面に被加熱物が載置する支持用ビームであって、棒状のビーム本体部と、ビーム本体部の上面に設けられた、上方に凸形状をなす凸部と、凸部をビーム本体部に接合する接合材部と、を有することを特徴とする。 The supporting beam of the present invention that solves the above problems is a supporting beam that is arranged in a heating furnace and on which an object to be heated is placed, and is formed on a rod-shaped beam main body and an upper surface of the beam main body. It is characterized by having a convex portion having an upward convex shape and a joining material portion for joining the convex portion to the beam main body portion.

本発明の支持用ビームは、支持用ビームの上面に被加熱物が載置されるものであり、被加熱物は凸部の上に載置される。つまり、支持用ビームと被加熱物とが凸部で接触し、支持用ビームとの接触面積が減少する。この結果、本発明の支持用ビームは、被加熱物に加熱ムラが生じにくくなり、その結果として被加熱物の色ムラの発生が抑えられる。 In the support beam of the present invention, the object to be heated is placed on the upper surface of the support beam, and the object to be heated is placed on the convex portion. That is, the supporting beam and the object to be heated come into contact with each other at the convex portion, and the contact area with the supporting beam is reduced. As a result, the supporting beam of the present invention is less likely to cause uneven heating in the object to be heated, and as a result, the occurrence of color unevenness in the object to be heated is suppressed.

実施形態１の支持用ビームを示す斜視図である。It is a perspective view which shows the support beam of Embodiment 1. FIG. 実施形態１の支持用ビームを示す側面図である。It is a side view which shows the support beam of Embodiment 1. FIG. 実施形態１の支持用ビームを示す上面図である。It is a top view which shows the support beam of Embodiment 1. FIG. 実施形態１の支持用ビームを示す正面図である。It is a front view which shows the support beam of Embodiment 1. FIG. 図２中のＶ−Ｖ線での矢視断面図である。It is a cross-sectional view taken along the line VV in FIG. 実施形態１の変形形態の支持ビームの部分拡大断面図である。It is a partially enlarged sectional view of the support beam of the modified form of Embodiment 1. FIG. 実施形態１の変形形態の支持ビームの部分拡大断面図である。It is a partially enlarged sectional view of the support beam of the modified form of Embodiment 1. FIG. 実施形態２の支持用ビームを示す上面図である。It is a top view which shows the support beam of Embodiment 2. 実施形態３の支持用ビームを示す上面図である。It is a top view which shows the support beam of Embodiment 3.

以下、実施の形態を用いて、本発明の支持用ビームを具体的に説明する。
［実施形態１］
本形態の支持用ビーム１は、図１に斜視図で、図２に側面図で、図３に上面図で、図４に正面図で、図５に断面図で、それぞれ示した。図５は、図２中のＶ−Ｖ線での断面図である。
本形態の支持用ビーム１は、加熱炉内に配され、その上面に被加熱物が載置される。そして、本形態の支持用ビーム１は、ビーム本体部２、凸部３、接合材部４を有する。 Hereinafter, the supporting beam of the present invention will be specifically described with reference to the embodiments.
[Embodiment 1]
The supporting beam 1 of this embodiment is shown in a perspective view in FIG. 1, a side view in FIG. 2, a top view in FIG. 3, a front view in FIG. 4, and a cross-sectional view in FIG. FIG. 5 is a cross-sectional view taken along the line VV in FIG.
The support beam 1 of this embodiment is arranged in a heating furnace, and an object to be heated is placed on the upper surface thereof. The supporting beam 1 of this embodiment has a beam main body portion 2, a convex portion 3, and a bonding material portion 4.

ビーム本体部２は、棒状を有する。ここで、棒状とは、長尺状に伸びる形状（軸方向に沿って延びる形状）を示す。ビーム本体部２は、棒状であれば限定されず、中実状であっても、中空の筒状であってもいずれでもよい。軽量化や熱容量を小さくできることから、中空であることが好ましい。中空とは、部分的に肉抜きした形態であっても、内部が中空の筒状であっても、いずれでもよい。ビーム本体部２は、筒状であることが好ましい。 The beam main body 2 has a rod shape. Here, the rod shape indicates a shape extending in a long shape (a shape extending along the axial direction). The beam main body 2 is not limited as long as it has a rod shape, and may have a solid shape or a hollow tubular shape. It is preferably hollow because it can reduce weight and heat capacity. The hollow may be a partially lightened form or a tubular shape having a hollow inside. The beam main body 2 is preferably tubular.

ビーム本体部２が筒状である場合、その断面形状についても限定されない。すなわち、円筒形状、角筒形状のいずれでもよい。好ましくは、角筒形状である。角筒形状についても、断面形状が三角形状、四角形状（正方形状、長方形状）、五角形以上の多角形状のいずれでもよい。本形態では、四角形状の断面形状である。
ビーム本体部２が筒状である場合、肉厚の厚さは限定されない。ビーム本体部２を形成する材料により適宜決定できる。多角形状をなしている場合の各辺において均一な厚さであることが好ましい。 When the beam main body 2 has a tubular shape, the cross-sectional shape thereof is not limited. That is, it may be either cylindrical or square. It is preferably a square cylinder shape. The square tube shape may be any of a triangular shape, a square shape (square shape, a rectangular shape), and a pentagonal shape or a polygonal shape. In this embodiment, it has a quadrangular cross-sectional shape.
When the beam main body 2 has a tubular shape, the wall thickness is not limited. It can be appropriately determined depending on the material forming the beam main body 2. It is preferable that the thickness is uniform on each side in the case of a polygonal shape.

ビーム本体部２は、図５に示した本形態のように、上面２ａが平面をなしていることが好ましい。ビーム本体部２の上面２ａが平面をなすことで、凸部３を簡単に形成することができる。すなわち、接合材部４にて凸部３を簡単に接合できる。さらに、凸部３の突出高さ（凸部３の先端部の上面２ａからの高さ）を調節することが容易となる。 It is preferable that the upper surface 2a of the beam main body 2a is flat as in the present embodiment shown in FIG. Since the upper surface 2a of the beam main body 2 is flat, the convex portion 3 can be easily formed. That is, the convex portion 3 can be easily joined by the joining material portion 4. Further, it becomes easy to adjust the protruding height of the convex portion 3 (the height of the tip portion of the convex portion 3 from the upper surface 2a).

ビーム本体部２を形成する材料は、使用温度（加熱炉の加熱温度）に耐えられるものであれば、具体的な材料が限定されない。すなわち、ビーム本体部２が所定の熱間強度を有する材料であれば限定されない。例えば、ステンレス鋼等の耐熱性金属や、セラミックスを選択することができる。セラミックスとしては、高い耐熱性，高熱伝導性，熱間でのクリープ変形のしにくさ等の特性により、ＳｉＣ系のセラミックスが好ましい。 The material forming the beam main body 2 is not limited as long as it can withstand the operating temperature (heating temperature of the heating furnace). That is, it is not limited as long as the beam main body 2 is made of a material having a predetermined hot intensity. For example, heat-resistant metals such as stainless steel and ceramics can be selected. As the ceramics, SiC-based ceramics are preferable because of their characteristics such as high heat resistance, high thermal conductivity, and resistance to creep deformation during heat.

凸部３は、ビーム本体部２の上面２ａに設けられる。凸部３は、上方に凸形状をなしている。
凸部３は、ビーム本体部２の上面２ａに設けられることで、本形態の支持用ビーム１に被加熱物が載置されたときに、凸部３の先端部（上端）と当接する。凸部３の端部（上端）の端面が被加熱物と当接することで、被加熱物と支持用ビーム１との当接面積を小さくすることができる。 The convex portion 3 is provided on the upper surface 2a of the beam main body portion 2. The convex portion 3 has an upward convex shape.
Since the convex portion 3 is provided on the upper surface 2a of the beam main body portion 2, when the object to be heated is placed on the support beam 1 of the present embodiment, the convex portion 3 comes into contact with the tip end portion (upper end) of the convex portion 3. When the end surface of the end portion (upper end) of the convex portion 3 comes into contact with the object to be heated, the contact area between the object to be heated and the supporting beam 1 can be reduced.

凸部３は、その具体的な形状が限定されないが、被加熱物と当接する部分（当接面積）を小さくできる形状であることが好ましい。凸部３は、ビーム本体部２から離反するにつれて縮径する形状であることが好ましい。すなわち、突出方向で先細となる突出形状をなすことが好ましい。先細の突出形状とは、円錐形状や角錐形状等の錐形状、上面が湾曲面を形成する半球状等の山状に盛り上がった形状を例示できる。本形態では、図２に示すように、凸となっている部分の先端が湾曲した半球状である。さらに、凸部３は、被載置物を載置したときに、被載置物の下面に凸部３の表面の全面が当接しない形状であり、凸部３の表面の全面が被加熱物の下面と一致しない形状である。
凸部３は、被加熱物を載置したときの衝撃で割れ等の損傷を生じない材料であれば、その材料が限定されない。たとえば、ステンレス鋼等の耐熱性金属や、アルミナ系，ジルコニア系等のセラミックスを選択することができる。好ましくは、アルミナセラミックスである。 The specific shape of the convex portion 3 is not limited, but it is preferable that the convex portion 3 has a shape that can reduce the portion (contact area) that comes into contact with the object to be heated. The convex portion 3 preferably has a shape that shrinks in diameter as it separates from the beam main body portion 2. That is, it is preferable to form a protruding shape that tapers in the protruding direction. The tapered protruding shape can be exemplified by a cone shape such as a conical shape or a pyramid shape, or a mountain-shaped raised shape such as a hemisphere whose upper surface forms a curved surface. In this embodiment, as shown in FIG. 2, the tip of the convex portion is a curved hemisphere. Further, the convex portion 3 has a shape in which the entire surface of the convex portion 3 does not come into contact with the lower surface of the object to be placed when the object to be placed is placed, and the entire surface of the convex portion 3 is the object to be heated. The shape does not match the bottom surface.
The material of the convex portion 3 is not limited as long as it is a material that does not cause damage such as cracking due to the impact when the object to be heated is placed. For example, heat-resistant metals such as stainless steel and ceramics such as alumina-based and zirconia-based can be selected. Alumina ceramics are preferred.

本形態の支持用ビーム１において、凸部３は、図１に示すように、ビーム本体部２の上面２ａに、ビーム本体部２の軸方向に沿って所定の間隔で一列に配列した状態で設けられる。隣接する二つの凸部３の間隔（ビーム本体部２の軸方向での間隔）についても、限定されない。複数の凸部３の間隔のそれぞれは、同じ間隔であっても、異なる間隔であっても、いずれでもよい。被加熱物を支持できる間隔から、適宜決定できる。 In the support beam 1 of the present embodiment, as shown in FIG. 1, the convex portions 3 are arranged in a row on the upper surface 2a of the beam main body 2 at predetermined intervals along the axial direction of the beam main body 2. Provided. The distance between the two adjacent convex portions 3 (the distance between the beam main body 2 in the axial direction) is also not limited. Each of the intervals of the plurality of convex portions 3 may be the same interval or different intervals. It can be appropriately determined from the interval at which the object to be heated can be supported.

接合材部４は、凸部３をビーム本体部２に接合する部材である。接合材部４は、凸部３をビーム本体部２に接合することができる部材よりなれば限定されない。また、接合材部４は、凸部３とビーム本体部２とを一体に接合することができるものであれば、支持用ビーム１を形成したときに、拡散して見かけ上消失していてもよい。 The joining material portion 4 is a member that joins the convex portion 3 to the beam main body portion 2. The joining material portion 4 is not limited as long as it is made of a member capable of joining the convex portion 3 to the beam main body portion 2. Further, as long as the bonding material portion 4 can integrally bond the convex portion 3 and the beam main body portion 2, even if the bonding material portion 4 is diffused and apparently disappears when the supporting beam 1 is formed. Good.

接合材部４は、凸部３をビーム本体部２に接合することができる材料よりなればよく、その材料が限定されない。たとえば、金属をろう付けするろう材や、セラミックス同士を接合するセラミックス接合材を選択することができる。好ましくは、セラミックス接合材である。 The joining material portion 4 may be made of a material capable of joining the convex portion 3 to the beam main body portion 2, and the material is not limited. For example, a brazing material for brazing a metal or a ceramics bonding material for bonding ceramics can be selected. A ceramic bonding material is preferable.

（本形態の製造方法）
本形態の支持用ビーム１は、その製造方法が限定されるものではない。たとえば、以下の様に製造することができる。
まず、断面四角形状の筒状のビーム本体部２を製造する。ビーム本体部２の製造は、たとえば、炭化ケイ素の原料粉末を所定形状に成形し、焼成することで製造することができる。
同様に、凸部３となる部材をセラミックスにて製造する。すなわち、半球形状のセラミックス製の部材を製造する。この部材は、アルミナ粉末を所定の半球形状に成形し、焼成することで製造することができる。
そして、上面２ａとなる面の所定の部位に、セラミックス接合材を塗布し、凸部３となる部材を接合材に押しつけて固定する。
この状態で、セラミックス接合材が接合する温度以上に加熱して接合材をビーム本体部２に凸部３を一体に接合する。
以上の製造方法により、本形態の支持用ビーム１は製造できる。 (Manufacturing method of this embodiment)
The manufacturing method of the supporting beam 1 of the present embodiment is not limited. For example, it can be manufactured as follows.
First, a tubular beam main body 2 having a quadrangular cross section is manufactured. The beam main body 2 can be manufactured, for example, by molding a raw material powder of silicon carbide into a predetermined shape and firing it.
Similarly, the member to be the convex portion 3 is manufactured of ceramics. That is, a hemispherical ceramic member is manufactured. This member can be manufactured by molding alumina powder into a predetermined hemispherical shape and firing it.
Then, a ceramic bonding material is applied to a predetermined portion of the surface to be the upper surface 2a, and the member to be the convex portion 3 is pressed against the bonding material to be fixed.
In this state, the ceramic bonding material is heated to a temperature higher than the bonding temperature to integrally bond the bonding material to the beam main body portion 2 and the convex portion 3.
By the above manufacturing method, the support beam 1 of this embodiment can be manufactured.

（本形態の作用効果)
本形態の支持用ビーム１は、加熱炉内に配され、その上面に被加熱物が載置する支持用ビーム１であって、棒状のビーム本体部２と、ビーム本体部２の上面２ａに設けられた、上方に凸形状をなす凸部３と、凸部３をビーム本体部２に接合する接合材部４と、を有する構成となっている。 (Action and effect of this form)
The support beam 1 of this embodiment is a support beam 1 arranged in a heating furnace and on which an object to be heated is placed, and is provided on a rod-shaped beam main body 2 and an upper surface 2a of the beam main body 2. It has a configuration having a convex portion 3 having an upwardly convex shape and a joining material portion 4 for joining the convex portion 3 to the beam main body portion 2.

本形態の支持用ビーム１は、この構成によると、被加熱物を載置したときに、被加熱物が凸部３の端部（上端）と当接する。このとき、凸部３と被加熱物とは、凸部３の上端の端面（あるいは頂点）で当接する。従来の棒状の支持用ビームと比較して、本形態の支持用ビーム１は、被加熱物と支持用ビーム１との当接面積を小さくすることができる。この結果、被加熱物を載置して熱処理しても、凸部３と当接することに起因する被加熱物の部分的な加熱ムラが発生することが抑えられる。このように、本形態の支持用ビーム１は、被加熱物を載置して加熱したときに、加熱ムラを抑えながら加熱することができる。すなわち、被加熱物に、加熱ムラに起因する不具合の発生が抑えられる。 According to this configuration, in the support beam 1 of the present embodiment, when the object to be heated is placed, the object to be heated comes into contact with the end portion (upper end) of the convex portion 3. At this time, the convex portion 3 and the object to be heated come into contact with each other at the end surface (or apex) of the upper end of the convex portion 3. Compared with the conventional rod-shaped supporting beam, the supporting beam 1 of this embodiment can reduce the contact area between the object to be heated and the supporting beam 1. As a result, even if the object to be heated is placed and heat-treated, it is possible to suppress the occurrence of partial heating unevenness of the object to be heated due to the contact with the convex portion 3. As described above, the support beam 1 of the present embodiment can be heated while suppressing uneven heating when the object to be heated is placed and heated. That is, it is possible to suppress the occurrence of defects in the object to be heated due to uneven heating.

ビーム本体部２は、上面２ａが平面をなしていることが好ましい。ビーム本体部２の上面２ａが平面をなしていることで、凸部３となる部材を接合材で接合するだけで製造できるため、凸部３を簡単に形成することができる。さらに、凸部３となる部材を変更することで、凸部３の突出高さ（凸部３の先端部の上面２ａからの高さ）を調節することが容易となる。すなわち、複数の凸部３に被加熱物を載置したとき、凸部３と被加熱物が複数箇所で当接する当接箇所を水平に調節することが容易にできる。つまり、被加熱物を水平に保持できる。
ビーム本体部２は、全体として四角筒状をなしていることが好ましい。この構成を有することで、凸部３を簡単に形成することができる。すなわち、接合材部４にて凸部３を簡単に接合できる。 It is preferable that the upper surface 2a of the beam main body 2 is flat. Since the upper surface 2a of the beam main body 2 is flat, it can be manufactured only by joining the members to be the convex portions 3 with a joining material, so that the convex portions 3 can be easily formed. Further, by changing the member to be the convex portion 3, it becomes easy to adjust the protruding height of the convex portion 3 (the height of the tip portion of the convex portion 3 from the upper surface 2a). That is, when the object to be heated is placed on the plurality of convex portions 3, it is possible to easily adjust the contact points where the convex portions 3 and the object to be heated come into contact with each other at a plurality of locations horizontally. That is, the object to be heated can be held horizontally.
The beam main body 2 preferably has a square tubular shape as a whole. By having this structure, the convex portion 3 can be easily formed. That is, the convex portion 3 can be easily joined by the joining material portion 4.

凸部３は、半球形状をなしていることが好ましい。凸部３が半球状をなしていることで、本形態の支持用ビーム１（の凸部３の先端）が被加熱物の下面と当接する接触部が、点接触となる。この結果、当接面積をより小さくすることができる。具体的には、被加熱物が板材等の場合には、被加熱物の下面は平面となり、凸部３の先端と点接触となり、当接面積を可能な限り小さくすることができる。 The convex portion 3 preferably has a hemispherical shape. Since the convex portion 3 has a hemispherical shape, the contact portion where the support beam 1 (the tip of the convex portion 3) of the present embodiment comes into contact with the lower surface of the object to be heated becomes point contact. As a result, the contact area can be made smaller. Specifically, when the object to be heated is a plate material or the like, the lower surface of the object to be heated is flat and makes point contact with the tip of the convex portion 3, so that the contact area can be made as small as possible.

［実施形態１の変形形態］
上記の形態では、凸部３が半球形状のセラミックス製の部材により形成されているが、この形態に限定されない。凸部３は、ビーム本体部２の上面２ａから上方に凸形状をなしていればよく、その一部がビーム本体部２の上面２ａより下方に位置する構成であってもよい。
すなわち、ビーム本体部２の上面２ａに、下方側にくぼんだ凹部２１を形成しておき、凸部３となる部材を、凹部２１に挿入する構成としてもよい。 [Modified Form 1]
In the above form, the convex portion 3 is formed of a hemispherical ceramic member, but the present invention is not limited to this form. The convex portion 3 may have a convex shape upward from the upper surface 2a of the beam main body 2, and a part thereof may be located below the upper surface 2a of the beam main body 2.
That is, a recess 21 recessed downward may be formed on the upper surface 2a of the beam main body 2, and a member to be the convex portion 3 may be inserted into the recess 21.

例えば、図６に示す構成としてもよい。この構成では、ビーム本体部２は、その上面２ａに断面略Ｖ字状の円錐状にくぼんだ凹部２１が形成されている。凹部２１は、ビーム本体部２の上面２ａを形成する板状の部分を貫通しない。そして、凸部３となる部材は、凹部２１の開口部より大径の球形状を有する。本構成では、凸部３となる球形状の部材は、凹部２１に挿入したときに、凹部２１の内周面に当接し、凹部２１内での位置が保持される。この状態では、凸部３となる部材のうち相対的に上方に位置している部分が、上面２ａから上方に突出する。
本構成では、上面２ａの凹部２１にセラミックス接合材を充填し、凸部３となる部材（球形状の部材）を挿入して固定する。この構成によると、凸部３の位置決めを簡単に行うことができる。また、凸部３となる部材と凹部２１の内表面とが広い面積で接合するため、強固に接合できる。すなわち、ビーム本体部２から凸部３が外れにくくなる。 For example, the configuration shown in FIG. 6 may be used. In this configuration, the beam main body 2 is formed with a concave portion 21 recessed in a conical shape having a substantially V-shaped cross section on the upper surface 2a. The recess 21 does not penetrate the plate-shaped portion forming the upper surface 2a of the beam main body 2. The member to be the convex portion 3 has a spherical shape having a diameter larger than that of the opening of the concave portion 21. In this configuration, when the spherical member to be the convex portion 3 is inserted into the concave portion 21, it comes into contact with the inner peripheral surface of the concave portion 21 and the position in the concave portion 21 is maintained. In this state, the portion of the member that becomes the convex portion 3 that is located relatively upward protrudes upward from the upper surface 2a.
In this configuration, the concave portion 21 of the upper surface 2a is filled with a ceramic bonding material, and a member (spherical member) to be the convex portion 3 is inserted and fixed. According to this configuration, the convex portion 3 can be easily positioned. Further, since the member to be the convex portion 3 and the inner surface of the concave portion 21 are joined in a wide area, they can be firmly joined. That is, the convex portion 3 is less likely to come off from the beam main body portion 2.

また、図７に示す構成としてもよい。この構成では、ビーム本体部２は、その上面２ａを形成する平板状の部分に、当該平板状の部分を貫通する貫通孔２２が形成されている。本形態の貫通孔２２は、孔径が変化しないが、上面２ａから下方に進むにつれて縮径するように孔径が変化してもよい。そして、凸部３となる部材は、凹部２１の開口部より大径の略半球状の本体部３１と、本体部３１の平面をなす下面から下方に突出する脚部３２と、を有する。本構成では、凸部３となる部材は、貫通孔２２に脚部３２を挿入したときに、本体部３１が上面２ａから上方に突出する。本形態の脚部３２は、下方に伸びる略円錐台形状をなしているが、角錐分形状や円錐分形状、角錐形状、円錐形状の下方側が縮径する形状であっても、円柱や多角柱形状のように径が変化しない柱状を有していてもよい。さらに、脚部３２の下方側への突出量についても、本形態では貫通孔２２を貫通していないが、貫通孔２２を貫通して形成してもよい。
本構成では、ビーム本体部２の貫通孔２２にセラミックス接合材を充填し、凸部３となる部材の脚部３２を挿入して固定する。この構成によると、図６に示した構成と同様に、凸部３の位置決めを簡単に行うことができる。また、凸部３となる部材と貫通孔２２の内周面とが広い面積で接合するため、強固に接合できる。すなわち、ビーム本体部２から凸部３が外れにくくなる。 Further, the configuration shown in FIG. 7 may be used. In this configuration, the beam main body 2 is formed with a through hole 22 penetrating the flat plate-shaped portion in the flat plate-shaped portion forming the upper surface 2a thereof. The hole diameter of the through hole 22 of the present embodiment does not change, but the hole diameter may change so as to shrink in diameter from the upper surface 2a downward. The member to be the convex portion 3 has a substantially hemispherical main body portion 31 having a diameter larger than the opening of the concave portion 21, and a leg portion 32 protruding downward from the flat lower surface of the main body portion 31. In this configuration, when the leg portion 32 is inserted into the through hole 22, the main body portion 31 of the member to be the convex portion 3 projects upward from the upper surface 2a. The leg portion 32 of this embodiment has a substantially truncated cone shape extending downward, but even if it has a pyramid shape, a cone shape, a pyramid shape, or a shape in which the lower side of the cone shape has a reduced diameter, a cylinder or a polygonal column It may have a columnar shape whose diameter does not change like the shape. Further, the amount of protrusion of the leg portion 32 downward is not penetrated through the through hole 22 in this embodiment, but may be formed through the through hole 22.
In this configuration, the through hole 22 of the beam main body 2 is filled with a ceramic bonding material, and the leg portion 32 of the member to be the convex portion 3 is inserted and fixed. According to this configuration, the convex portion 3 can be easily positioned as in the configuration shown in FIG. Further, since the member to be the convex portion 3 and the inner peripheral surface of the through hole 22 are joined in a wide area, they can be firmly joined. That is, the convex portion 3 is less likely to come off from the beam main body portion 2.

［実施形態２］
本形態は、凸部３が配列する構成が異なること以外は、実施形態１と同様な支持用ビーム１である。本形態の支持用ビーム１の上面図を、図８に示す。 [Embodiment 2]
This embodiment is a support beam 1 similar to that of the first embodiment except that the configurations in which the convex portions 3 are arranged are different. A top view of the support beam 1 of this embodiment is shown in FIG.

本形態では、図８に示すように、凸部３がビーム本体部２の上面２ａにおいて、ビーム本体部２の軸方向に沿って所定の間隔で二列に配列した状態で設けられている。二列に並んだ凸部３のそれぞれは、ビーム本体部２の軸方向での位置が同じ位置となるように幅方向で並んで配置されている。なお、幅方向は、軸方向に垂直な方向であり、図８での上下方向を示す。
本形態においても、実施形態１と同様な効果を発揮する。
なお、ビーム本体部２の軸方向に沿って凸部３が並んだ列の数についても、三列以上の複数列としてもよい。この場合でも、本形態と同様な効果を発揮する。 In this embodiment, as shown in FIG. 8, the convex portions 3 are provided on the upper surface 2a of the beam main body 2 in a state of being arranged in two rows at predetermined intervals along the axial direction of the beam main body 2. Each of the convex portions 3 arranged in two rows is arranged side by side in the width direction so that the positions of the beam main body 2 in the axial direction are the same. The width direction is a direction perpendicular to the axial direction, and indicates the vertical direction in FIG.
Also in this embodiment, the same effect as that of the first embodiment is exhibited.
The number of rows in which the convex portions 3 are arranged along the axial direction of the beam main body portion 2 may be a plurality of rows of three or more. Even in this case, the same effect as that of this embodiment is exhibited.

［実施形態３］
本形態は、凸部３が配列する構成が異なること以外は、実施形態２と同様な支持用ビーム１である。本形態の支持用ビーム１の上面図を、図９に示す。 [Embodiment 3]
This embodiment is a support beam 1 similar to that of the second embodiment except that the configurations in which the convex portions 3 are arranged are different. A top view of the support beam 1 of this embodiment is shown in FIG.

本形態では、図９に示すように、凸部３がビーム本体部２の上面２ａにおいて、ビーム本体部２の軸方向に沿って所定の間隔で二列に配列した状態で設けられている。二列に並んだ、凸部３は、ビーム本体部２の軸方向での位置が異なる位置となるように配置されている。本形態では、所定の間隔で軸方向に沿って一列に並んだ凸部３は、その軸方向での位置が、別の列の凸部３の間隔の略中央に位置している。しかし、この形態に限定されない。
本形態においても、実施形態１と同様な効果を発揮する。 In this embodiment, as shown in FIG. 9, the convex portions 3 are provided on the upper surface 2a of the beam main body 2 in a state of being arranged in two rows at predetermined intervals along the axial direction of the beam main body 2. The convex portions 3 arranged in two rows are arranged so that the positions of the beam main body portion 2 in the axial direction are different. In the present embodiment, the convex portions 3 arranged in a row along the axial direction at predetermined intervals are positioned in the axial direction at substantially the center of the interval between the convex portions 3 in another row. However, it is not limited to this form.
Also in this embodiment, the same effect as that of the first embodiment is exhibited.

１：支持用ビーム
２：ビーム本体部
３：凸部
４：接合材部 1: Support beam 2: Beam body 3: Convex 4: Joining material

Claims (4)

加熱炉内に配され、その上面に被加熱物が載置する支持用ビームであって、
棒状のビーム本体部と、
該ビーム本体部の上面に設けられた、上方に凸形状をなす凸部と、
該凸部を該ビーム本体部に接合する接合材部と、
を有することを特徴とする支持用ビーム。 A support beam that is placed in a heating furnace and on which an object to be heated is placed.
The rod-shaped beam body and
A convex portion having an upward convex shape provided on the upper surface of the beam main body,
A bonding material portion that joins the convex portion to the beam main body portion,
A supporting beam characterized by having. 前記ビーム本体部は、上面が平面をなしている請求項１記載の支持用ビーム。 The support beam according to claim 1, wherein the beam main body has a flat upper surface. 前記ビーム本体部は、全体として四角筒状をなしている請求項１〜２のいずれか１項に記載の支持用ビーム。 The support beam according to any one of claims 1 to 2, wherein the beam main body has a square tubular shape as a whole. 前記凸部は、半球形状をなしている請求項１〜３のいずれか１項に記載の支持用ビーム。 The support beam according to any one of claims 1 to 3, wherein the convex portion has a hemispherical shape.
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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56501571A (en) * 1979-11-02 1981-10-29
JPS6082453U (en) * 1983-11-09 1985-06-07 大同特殊鋼株式会社 Skid structure for heating furnace
JPH0456744U (en) * 1990-09-21 1992-05-15
KR20030008119A (en) * 2001-07-16 2003-01-24 주식회사 포스코 Skid button for skid mark diminution
JP2004263919A (en) * 2003-02-28 2004-09-24 Noritake Co Ltd Carriage for baking
JP2005528531A (en) * 2002-07-25 2005-09-22 ポスコ Method for reducing temperature deviation on heated material, skid member, and skid device using the same
WO2015186599A1 (en) * 2014-06-06 2015-12-10 日鉄住金テックスエンジ株式会社 Far infrared radiation multistage heating furnace for steel plates for hot pressing
JP2017149834A (en) * 2016-02-24 2017-08-31 Ｊｆｅスチール株式会社 Method for constructing furnace body

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56501571A (en) * 1979-11-02 1981-10-29
JPS6082453U (en) * 1983-11-09 1985-06-07 大同特殊鋼株式会社 Skid structure for heating furnace
JPH0456744U (en) * 1990-09-21 1992-05-15
KR20030008119A (en) * 2001-07-16 2003-01-24 주식회사 포스코 Skid button for skid mark diminution
JP2005528531A (en) * 2002-07-25 2005-09-22 ポスコ Method for reducing temperature deviation on heated material, skid member, and skid device using the same
JP2004263919A (en) * 2003-02-28 2004-09-24 Noritake Co Ltd Carriage for baking
WO2015186599A1 (en) * 2014-06-06 2015-12-10 日鉄住金テックスエンジ株式会社 Far infrared radiation multistage heating furnace for steel plates for hot pressing
JP2017149834A (en) * 2016-02-24 2017-08-31 Ｊｆｅスチール株式会社 Method for constructing furnace body

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