JPH0550831B2 - - Google Patents
Info
- Publication number
- JPH0550831B2 JPH0550831B2 JP24853885A JP24853885A JPH0550831B2 JP H0550831 B2 JPH0550831 B2 JP H0550831B2 JP 24853885 A JP24853885 A JP 24853885A JP 24853885 A JP24853885 A JP 24853885A JP H0550831 B2 JPH0550831 B2 JP H0550831B2
- Authority
- JP
- Japan
- Prior art keywords
- heating element
- molybdenum disilicide
- mullite
- support base
- mullite beads
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000010438 heat treatment Methods 0.000 claims description 62
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims description 24
- 229910052863 mullite Inorganic materials 0.000 claims description 23
- 239000011324 bead Substances 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 9
- YXTPWUNVHCYOSP-UHFFFAOYSA-N bis($l^{2}-silanylidene)molybdenum Chemical compound [Si]=[Mo]=[Si] YXTPWUNVHCYOSP-UHFFFAOYSA-N 0.000 description 25
- 229910021343 molybdenum disilicide Inorganic materials 0.000 description 25
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000003466 welding Methods 0.000 description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical group [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Na2O Inorganic materials [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Resistance Heating (AREA)
Description
【発明の詳細な説明】
〈産業上の利用分野〉
この発明は、高温加熱炉に用いられる発熱体を
支持するための発熱体の支持方法に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for supporting a heating element for supporting a heating element used in a high-temperature heating furnace.
〈従来の技術〉
高温加熱炉においては、基台上に二珪化モリブ
デン発熱体の両端を支持して保持すれば、二珪化
モリブデン発熱体が高温で剛性を失つて撓んでし
まう。<Prior Art> In a high-temperature heating furnace, if both ends of a molybdenum disilicide heating element are supported and held on a base, the molybdenum disilicide heating element loses its rigidity and bends at high temperatures.
そのため、従来においては、二珪化モリブデン
発熱体全体を支持台上に接触させて載置してい
た。 Therefore, in the past, the entire molybdenum disilicide heating element was placed on a support stand in contact with it.
ところが、このような発熱体の支持方法では、
二珪化モリブデン発熱体の伸縮時、二珪化モリブ
デン発熱体と支持台との間の摩擦により、機械的
抵抗が生じて折れ曲つたり撓んだりして二珪化モ
リブデン発熱体が損傷する問題がある。また、上
記二珪化モリブデン発熱体の支持方法では、二珪
化モリブデン発熱体下面全体と支持台上面とが直
接接触しているため、上記二珪化モリブデン発熱
体の発熱により、二珪化モリブデン発熱体と支持
台との間の化学反応や溶着が起つたりして、二珪
化モリブデン発熱体および支持台の夫々の寿命が
短かくなるという問題がある。 However, with this method of supporting the heating element,
When the molybdenum disilicide heating element expands and contracts, mechanical resistance occurs due to friction between the molybdenum disilicide heating element and the support base, causing the molybdenum disilicide heating element to bend or bend, causing damage to the molybdenum disilicide heating element. . In addition, in the above method for supporting a molybdenum disilicide heating element, since the entire lower surface of the molybdenum disilicide heating element is in direct contact with the upper surface of the support base, the heat generated by the molybdenum disilicide heating element is transferred to the molybdenum disilicide heating element and the supporting base. There is a problem in that a chemical reaction or welding occurs between the molybdenum disilicide heating element and the support, resulting in a shortened lifespan of the molybdenum disilicide heating element and the support.
〈発明の目的〉
そこで、この発明の目的は、熱膨張時における
発熱体の伸縮時、発熱体と支持台との間の摩擦を
極力減少させて機械的抵抗を少なくし、発熱体の
損傷を防止し、また発熱体と支持台との間の化学
反応および溶着を防止して発熱体および支持台の
長寿命化を達成することにある。<Objective of the Invention> Therefore, an object of the present invention is to reduce the friction between the heating element and the support base as much as possible to reduce mechanical resistance and prevent damage to the heating element when the heating element expands and contracts during thermal expansion. The object of the present invention is to prevent chemical reactions and welding between the heating element and the support, thereby extending the life of the heating element and the support.
〈発明の構成〉
上記目的を達成するため、この発明の発熱体の
支持方法は、第１図に例示するように、支持台１
上にムライトビーズ２を略均一に敷きつめ、発熱
体４を上記ムライトビーズ２の上に略水平に設置
することを特徴とする。<Structure of the Invention> In order to achieve the above object, the method for supporting a heating element of the present invention includes a support base 1 as illustrated in FIG.
It is characterized in that mullite beads 2 are spread substantially uniformly on top, and a heating element 4 is installed substantially horizontally on top of the mullite beads 2.
〈発明の作用〉
発熱体４の下面全体は、支持台１上に略均一に
敷きつめられたムライトビーズ２に一様に接触し
て支持される。そのため、発熱体４が熱膨張で伸
縮しても発熱体４は、転がるムライトビーズ２上
を移動するのみであり、発熱体４には機械的抵抗
が働らくことはない。したがつて、発熱体４の破
損が防止される。また、上記ムライトビーズ２が
発熱体４と支持台１との間に介在されるため、発
熱体４と支持台１との間の化学反応や溶着は起こ
らない。<Operation of the Invention> The entire lower surface of the heating element 4 is supported by uniformly contacting the mullite beads 2 spread almost uniformly on the support base 1. Therefore, even if the heating element 4 expands and contracts due to thermal expansion, the heating element 4 only moves on the rolling mullite beads 2, and no mechanical resistance acts on the heating element 4. Therefore, damage to the heating element 4 is prevented. Furthermore, since the mullite beads 2 are interposed between the heating element 4 and the support 1, no chemical reaction or welding occurs between the heating element 4 and the support 1.
〈実施例〉
以下、この発明を図示の実施例により詳細に説
明する。<Examples> The present invention will be described in detail below with reference to illustrated examples.
第１図はこの発明の一実施例を示す平面図、第
２図は上記実施例の断面図であり、１は四角形の
厚板の上面に凹部１ａを形成した耐火物からなる
支持台、２は支持台１の凹部１ａに略均一に敷き
つめたムライトビーズ、４はムライトビーズ２の
上に下部全体を接触させて、略水平に設置した発
熱体としての略Ｗ字形状に屈曲された二珪化モリ
ブデン発熱体である。 FIG. 1 is a plan view showing an embodiment of the present invention, and FIG. 2 is a sectional view of the above embodiment, in which 1 is a support base made of refractory material with a recess 1a formed in the upper surface of a square thick plate, 2 mullite beads are spread almost uniformly in the concave portion 1a of the support base 1, and 4 is a disilicide bent into an approximately W shape as a heating element, which is installed approximately horizontally with its entire lower part in contact with the mullite beads 2. It is a molybdenum heating element.
上記ムライトビーズ２は、本実施例では＃10〜
12程度の真球に近い球状の球状電融ムライト（化
学成分はAl2O3−76.8％、SiO2−23.0％、Fe2O3−
0.03％、Na2Ｏ−0.15％、TiO2−trからなる）で、
微細なムライト組織から構成されている。したが
つて、上記ムライトビーズ２は化学的、物理的に
安定し、かつ耐熱衝撃性に優れたものである。上
記二珪化モリブデン発熱体４はその両端部４ａ，
４ｂを図示しないリード線に連結する一方、その
加熱部４ｃをムライトビーズ２の上に略水平に載
せている。 The above mullite beads 2 are #10 to #10 in this example.
Spherical fused mullite with a size close to a true sphere (chemical composition: Al 2 O 3 −76.8%, SiO 2 −23.0%, Fe 2 O 3 −
0.03%, Na2O -0.15%, TiO2 - tr),
It is composed of a fine mullite structure. Therefore, the mullite beads 2 are chemically and physically stable and have excellent thermal shock resistance. The molybdenum disilicide heating element 4 has both ends 4a,
4b is connected to a lead wire (not shown), and the heating part 4c is placed on the mullite bead 2 substantially horizontally.
上記支持台１上にムライトビーズ２を介して二
珪化モリブデン発熱体４を載置したものが高温加
熱炉の所定場所に複数個設置されている。 A plurality of molybdenum disilicide heating elements 4 mounted on the support base 1 via mullite beads 2 are installed at predetermined locations in the high-temperature heating furnace.
上記支持台１の凹部１ａに略均一に敷きつめら
れたムライトビーズ２によつて、二珪化モリブデ
ン発熱体４の下部全面は略一様に支持されてい
る。したがつて、支持台１と二珪化モリブデン発
熱体４の間で二珪化モリブデン発熱体４は自重で
撓むことはない。ムライトビーズ２が介在してい
るので、二珪化モリブデン発熱体４が熱膨張によ
り伸縮しても、二珪化モリブデン発熱体４はムラ
イトビーズ２をコロとしてその上を移動するのみ
で大きな摩擦力、つまり、機械的抵抗を受けるこ
とはない。したがつて、二珪化モリブデン発熱体
４は屈曲、座屈、摩耗等の損傷を受けない。ま
た、支持台１と二珪化モリブデン発熱体４との間
のムライトビーズ２は、化学的、物理的に安定し
ているので、二珪化モリブデン発熱体４の発熱時
に上記支持台１と二珪化モリブデン発熱体４との
間での化学反応も溶着も生じない。したがつて、
支持台１および二珪化モリブデン発熱体４は共に
長寿命となる。 The entire lower part of the molybdenum disilicide heating element 4 is supported substantially uniformly by the mullite beads 2 spread substantially uniformly in the recess 1a of the support base 1. Therefore, the molybdenum disilicide heating element 4 does not bend under its own weight between the support base 1 and the molybdenum disilicide heating element 4. Since the mullite beads 2 are interposed, even if the molybdenum disilicide heating element 4 expands and contracts due to thermal expansion, the molybdenum disilicide heating element 4 only moves on the mullite beads 2 as a roller, resulting in a large frictional force, i.e. , is not subjected to mechanical resistance. Therefore, the molybdenum disilicide heating element 4 does not suffer from damage such as bending, buckling, or wear. In addition, since the mullite beads 2 between the support base 1 and the molybdenum disilicide heating element 4 are chemically and physically stable, when the molybdenum disilicide heating element 4 generates heat, the support base 1 and the molybdenum disilicide Neither chemical reaction nor welding occurs with the heating element 4. Therefore,
Both the support base 1 and the molybdenum disilicide heating element 4 have a long life.
〈発明の効果〉
以上より明らかな如く、この発明の発熱体の支
持方法は、支持台上にムライトビーズを略均一に
敷きつめ、上記ムライトビーズの上に発熱体を略
水平に設置するので、発熱体の熱膨張により伸縮
しても発熱体は、転がるムライトビーズの上を移
動するのみで摩擦力が小さく、機械的抵抗を受け
ない。<Effects of the Invention> As is clear from the above, in the method for supporting a heating element of the present invention, the mullite beads are spread almost uniformly on a support base, and the heating element is placed approximately horizontally on top of the mullite beads, so that no heat is generated. Even if the heating element expands and contracts due to the thermal expansion of the body, the heating element only moves on the rolling mullite beads, so the frictional force is small and there is no mechanical resistance.
したがつて、この発明の方法によれば、発熱体
の座屈、屈曲、摩耗等の損傷を防止できる。ま
た、この発明の方法は、発熱体と支持台との間に
ムライトビーズを介在させたので、発熱体の発熱
時、発熱体と支持台との間で化学反応や溶着が起
こることはない。したがつて、この発明によれ
ば、発熱体と支持台の夫々の寿命を従来よりも著
しく長くすることができる。 Therefore, according to the method of the present invention, damage such as buckling, bending, and abrasion of the heating element can be prevented. Further, in the method of the present invention, since mullite beads are interposed between the heating element and the support, no chemical reaction or welding occurs between the heating element and the support when the heating element generates heat. Therefore, according to the present invention, the respective lives of the heating element and the support base can be significantly extended compared to the conventional ones.
第１図はこの発明の実施例を示す平面図、第２
図は第１図の−線断面図である。
１……支持台、２……ムライトビーズ、４……
発熱体。
Figure 1 is a plan view showing an embodiment of the invention, Figure 2 is a plan view showing an embodiment of the invention.
The figure is a sectional view taken along the line -- in FIG. 1... Support stand, 2... Mullite beads, 4...
heating element.
Claims (1)
の支持方法において、 上記支持台上にムライトビーズを略均一に敷き
つめ、上記発熱体を上記ムライトビーズの上に略
水平に設置することを特徴とする発熱体の支持方
法。[Scope of Claims] 1. A method for supporting a heating element in which the heating element is supported substantially horizontally on a support stand, wherein mullite beads are spread substantially uniformly on the support stand, and the heating element is placed approximately on top of the mullite beads. A method for supporting a heating element characterized by installing it horizontally.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24853885A JPS62108486A (en) | 1985-11-05 | 1985-11-05 | Supporting method of heating unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24853885A JPS62108486A (en) | 1985-11-05 | 1985-11-05 | Supporting method of heating unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62108486A JPS62108486A (en) | 1987-05-19 |
| JPH0550831B2 true JPH0550831B2 (en) | 1993-07-30 |
Family
ID=17179671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24853885A Granted JPS62108486A (en) | 1985-11-05 | 1985-11-05 | Supporting method of heating unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62108486A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0574018U (en) * | 1991-02-20 | 1993-10-08 | フオスター電機株式会社 | Audio digital signal processor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5324920A (en) * | 1990-10-18 | 1994-06-28 | Tokyo Electron Sagami Limited | Heat treatment apparatus |
-
1985
- 1985-11-05 JP JP24853885A patent/JPS62108486A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0574018U (en) * | 1991-02-20 | 1993-10-08 | フオスター電機株式会社 | Audio digital signal processor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62108486A (en) | 1987-05-19 |
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