JPH04132395U - Hanging Furnace Matsuful - Google Patents
Hanging Furnace MatsufulInfo
- Publication number
- JPH04132395U JPH04132395U JP3637391U JP3637391U JPH04132395U JP H04132395 U JPH04132395 U JP H04132395U JP 3637391 U JP3637391 U JP 3637391U JP 3637391 U JP3637391 U JP 3637391U JP H04132395 U JPH04132395 U JP H04132395U
- Authority
- JP
- Japan
- Prior art keywords
- muffle
- unit
- plate thickness
- muffles
- furnace
- 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.)
- Granted
Links
- 238000010438 heat treatment Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Tunnel Furnaces (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
(57)【要約】
【目的】 制限された板厚の条件下で、長大化を図るこ
とのできる吊下げ式炉内マッフルを提供することを目的
とする。
【構成】 板厚の異なる複数の単位マッフルからなる吊
下げ式炉内マッフルにおいて、最小板厚の単位マッフル
の上，下端に前記単位マッフル（１ｃ）より板厚が大な
る単位マッフル（１ｂ，１ａ，１ｂ′，１ａ′）を接続
するとともに、最下部の単位マッフルに圧縮荷重付与装
置（４）を設けた構成としたものである。
(57) [Summary] [Purpose] The purpose is to provide a suspended furnace muffle that can be extended in length under conditions of limited plate thickness. [Structure] In a suspended furnace muffle consisting of a plurality of unit muffles with different plate thicknesses, unit muffles (1b, 1a) with a plate thickness larger than the unit muffle (1c) are placed at the upper and lower ends of the unit muffle with the minimum plate thickness. , 1b', 1a'), and a compressive load applying device (4) is provided on the lowest unit muffle.
Description
【０００１】0001
本考案は吊下げ式炉内マッフルに関するものである。 The present invention relates to a suspended furnace muffle.
【０００２】0002
従来、竪型マッフル式連続熱処理炉における炉内マッフルは、その上端部を固 定点として吊下げ方式となっている。 ところで、この炉内マッフルは、その表面がバーナあるいは、電熱ヒータ等の 加熱手段により高温に曝されることと、上端部を固定点として吊下げられ、その 重量が上端部にかかるため、その板厚は、マッフル材における高温クリープ制限 応力内で、炉操業条件等により決定され、全長にわたってこの決定された厚みと なっている。 したがって、炉温が１１５０℃であれば、重量上の制限からマッフル長さは７ 〜９ｍ程度であり、生産量の増大に対処するために、炉の大形化（加熱帯の延長 ）を図るにも制限があった。 Conventionally, the upper end of the muffle in a vertical muffle continuous heat treatment furnace is fixed. It is hung as a fixed point. By the way, this furnace muffle has a surface that is attached to a burner or an electric heater. Exposure to high temperatures by means of heating, and hanging with the upper end as a fixed point. Since the weight is on the top end, its thickness is limited by the high temperature creep limit in muffle materials. The thickness is determined by the furnace operating conditions, etc. within the stress, and the thickness is determined over the entire length. It has become. Therefore, if the furnace temperature is 1150℃, the muffle length is 7 due to weight restrictions. The length of the furnace is approximately 9m, and in order to cope with the increase in production volume, the furnace must be made larger (extension of the heating zone). ) There were also restrictions on how to achieve this.
【０００３】 そこで出願人は、特公平２−２０７３号公報で、前記マッフルを板厚の異なる 複数の単位マッフルで構成し、最上部の単位マッフルの板厚が最大で、順次、下 方になるにしたがって板厚が減少するようにした吊下げ式炉内マッフルを提案し た。 この方式では、理論的には最上部の単位マッフルの板厚を増大すれば、マッフ ルをかなり長大化することができる。 しかしながら、マッフルは外部から熱を受け、内部に熱を与える役目があるが 、板厚が２０ｍｍを越えると、伝熱量が制限されたり、内外面の温度差が大とな り、破損する危険性があるため、炉温が１１５０℃でマッフル長さは１８ｍ位が 限度であった。 本考案は、前記公報に示される技術をさらに発展させて、より長大化を図るこ とのできる吊下げ式炉内マッフルを提供することを目的とする。0003 Therefore, in Japanese Patent Publication No. 2-2073, the applicant proposed the muffle with different thicknesses. Consisting of multiple unit muffles, the top unit muffle has the maximum thickness, and the We proposed a hanging type furnace muffle in which the plate thickness decreases as the direction increases. Ta. In theory, with this method, if the thickness of the top unit muffle is increased, the muffle It is possible to make the file considerably longer. However, the muffle has the role of receiving heat from the outside and giving heat to the inside. If the plate thickness exceeds 20mm, the amount of heat transfer will be limited or the temperature difference between the inner and outer surfaces will become large. Due to the risk of damage, the furnace temperature is 1150℃ and the muffle length is approximately 18m. That was the limit. The present invention is an attempt to further develop the technology shown in the above-mentioned publication and to make it more extensive. The purpose of the present invention is to provide a hanging type furnace muffle that can be used as a furnace.
【０００４】0004
本考案は、前記目的を達成するために、板厚の異なる複数の単位マッフルから なる吊下げ式炉内マッフルにおいて、最小板厚の単位マッフルの上，下端に前記 単位マッフルより板厚が大なる単位マッフルを接続するとともに、最下部の単位 マッフルに圧縮荷重付与装置を設けた構成としたものである。 In order to achieve the above-mentioned purpose, the present invention consists of a plurality of unit muffles with different plate thicknesses. In a suspended furnace muffle, the above-mentioned Connect the unit muffle that is thicker than the unit muffle, and connect the unit muffle at the bottom. The muffle has a configuration in which a compressive load applying device is provided.
【０００５】[0005]
つぎに、本考案の一実施例を図１にしたがって説明する。 本考案にかかるマッフル１は、板厚の異なる複数の単位マッフル１ａ，１ｂ， １ｃ…，１ａ′，１ｂ′…からなり、板厚は、１ａ＞１ｂ＞１ｃ，１ａ′＞１ｂ ′＞１ｃとなっている。 そして、図においては、前記マッフル１は、最小板厚の単位マッフル１ｃの上 ，下端に単位マッフル１ｂ，１ｂ′を熔接し、さらに、単位マッフル１ｂ，１ｂ ′の他端に最大板厚の単位マッフル１ａ，１ａ′を熔接して一体化し、最上部単 位マッフル１ａに取り付けた上フランジ２を、図示しない炉頂部に設けた基台上 に固定される。つまり、単位マッフルの上方部は、前記公報に記載の構成である 。 Next, one embodiment of the present invention will be described with reference to FIG. The muffle 1 according to the present invention includes a plurality of unit muffles 1a, 1b, 1c..., 1a', 1b'..., and the plate thickness is 1a>1b>1c, 1a'>1b ' > 1c. In the figure, the muffle 1 is placed above the unit muffle 1c having the minimum thickness. , unit muffles 1b, 1b' are welded to the lower ends, and further unit muffles 1b, 1b are welded to the lower ends. Unit muffles 1a and 1a' with the maximum plate thickness are welded and integrated to the other end of the uppermost unit. The upper flange 2 attached to the muffle 1a is placed on a base (not shown) provided at the top of the furnace. Fixed. In other words, the upper part of the unit muffle has the configuration described in the above publication. .
【０００６】 本考案においては、前記マッフル１の最下部単位マッフル１ａ′にも下フラン ジ３を設け、この下フランジ３に定滑車５、ワイヤ６、ウエイト７からなる圧縮 荷重付与装置４により、例えば、単位マッフル１ｃの中央より下方の自重に等し い力を上方向に加え、マッフル１の上部にかかる引張力を減少させるようにした ものである。 前記実施例では、最小板厚の単位マッフル１ｃを中心に上，下に各々二つの単 位マッフル１ｂ，１ａ，１ｂ′，１ａ′を接続したが、単位マッフルの接続個数 はこれに限らない。また、接続する各単位マッフル１ｂ，１ｂ′および１ａ，１ ａ′は同一板厚である必要はない。 なお、下部圧縮域（図２参照）が大きいと、圧縮力も大きくなりこの部分の単 位マッフルが座屈を生じる恐れがあるため、最小板厚の単位マッフル１ｃは、マ ッフル１の最下端から１／３位に配置するようにするのが望ましい。図において 、Ｗは金属ストリップである。[0006] In the present invention, the lowermost unit muffle 1a' of the muffle 1 also has a lower flange. A compressor is provided on the lower flange 3 consisting of a fixed pulley 5, a wire 6, and a weight 7. For example, the load applying device 4 applies a load equal to the own weight below the center of the unit muffle 1c. A force was applied upward to reduce the tensile force applied to the top of muffle 1. It is something. In the above embodiment, there are two units above and below the unit muffle 1c having the minimum plate thickness. unit muffles 1b, 1a, 1b', 1a' are connected, but the number of unit muffles connected is not limited to this. In addition, each connected unit muffle 1b, 1b' and 1a, 1 a' does not need to have the same thickness. Note that if the lower compression area (see Figure 2) is large, the compression force will also be large, and the unit in this area will be Since there is a risk that the muffle may buckle, the unit muffle 1c with the minimum plate thickness is It is desirable to arrange it at ⅓ from the bottom of the ffle 1. In the figure , W is a metal strip.
【０００７】[0007]
以上の説明で明らかなように、本考案は、板厚の異なる複数の単位マッフルか らなる吊下げ式炉内マッフルにおいて、最小板厚の単位マッフルの上，下端に前 記単位マッフルより板厚が大なる単位マッフルを接続するとともに、最下部の単 位マッフルに圧縮荷重付与装置を設けた構成であり、マッフルの最下部から上方 へ圧縮荷重を付与するため、マッフルの上端部にかかる引張力が小さくなる。つ まり、マッフル長を従来と同一長さとすれば、最大板厚は小さく、熱的な問題は 解消される。また、一般に、炉内マッフルは、高価な高級耐熱鋼を使用するため 、同一長さの炉内マッフルでは、従来のものより安価である。さらに、最大板厚 を同じにすれば、より長大なマッフルを得ることができる。 たとえば、マッフル温度１１５０℃、マッフル材料のクリープ制限応力を０． ０７ｋｇ／ｍｍ2とし、マッフルの最上部の単位マッフルの厚みを１８ｍｍとし た場合、前記公報のものでは全長が１９．５ｍが限度であるが、本考案によれば ２９ｍとすることができる。As is clear from the above explanation, the present invention provides a suspended furnace muffle consisting of a plurality of unit muffles with different plate thicknesses. In addition to connecting unit muffles, the lowest unit muffle is equipped with a compressive load applying device. Since the compressive load is applied upward from the lowest part of the muffle, the tensile force applied to the upper end of the muffle is reduced. . In other words, if the muffle length is the same as the conventional one, the maximum plate thickness will be small and the thermal problem will be solved. Further, since the furnace muffle generally uses expensive high-grade heat-resistant steel, the furnace muffle of the same length is cheaper than conventional ones. Furthermore, by keeping the maximum plate thickness the same, a longer muffle can be obtained. For example, the muffle temperature is 1150°C, and the creep limit stress of the muffle material is 0. 07 kg/mm 2 and the thickness of the uppermost unit muffle of the muffle is 18 mm, the total length is limited to 19.5 m in the above-mentioned publication, but according to the present invention, it can be 29 m.
【図面の簡単な説明】[Brief explanation of drawings]
【図１】 本考案にかかるマッフルの断面図。FIG. 1 is a sectional view of a muffle according to the present invention.
【図２】 図１のマッフルにかかる引張力と圧縮力との
関係を示す図。FIG. 2 is a diagram showing the relationship between tensile force and compressive force applied to the muffle in FIG. 1.
１…マッフル、１ａ，１ｂ，１ａ′，１ｂ′…単位マッ
フル、１ｃ…最小板厚の単位マッフル、４…圧縮荷重付
与装置。1... Muffle, 1a, 1b, 1a', 1b'... Unit muffle, 1c... Unit muffle of minimum plate thickness, 4... Compressive load applying device.
Claims (1)
る吊下げ式炉内マッフルにおいて、最小板厚の単位マッ
フルの上，下端に前記単位マッフルより板厚が大なる単
位マッフルを接続するとともに、最下部の単位マッフル
に圧縮荷重付与装置を設けたことを特徴とする吊下げ式
炉内マッフル。Claim 1: In a suspended furnace muffle consisting of a plurality of unit muffles having different plate thicknesses, a unit muffle having a plate thickness larger than that of the unit muffle is connected to the upper and lower ends of the unit muffle with the minimum plate thickness, and A suspended furnace muffle characterized by having a compressive load applying device installed on the lowest unit muffle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3637391U JPH0714797Y2 (en) | 1991-05-22 | 1991-05-22 | Suspended furnace muffle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3637391U JPH0714797Y2 (en) | 1991-05-22 | 1991-05-22 | Suspended furnace muffle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04132395U true JPH04132395U (en) | 1992-12-08 |
| JPH0714797Y2 JPH0714797Y2 (en) | 1995-04-10 |
Family
ID=31918326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3637391U Expired - Lifetime JPH0714797Y2 (en) | 1991-05-22 | 1991-05-22 | Suspended furnace muffle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0714797Y2 (en) |
-
1991
- 1991-05-22 JP JP3637391U patent/JPH0714797Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0714797Y2 (en) | 1995-04-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4088825A (en) | Electric furnace wall construction | |
| CA1127841A (en) | Method and apparatus for heating coils of strip | |
| CA1169244A (en) | High temperature box annealing furnace | |
| JPH04132395U (en) | Hanging Furnace Matsuful | |
| JPH02254208A (en) | Thermal radiation pipe system for heating furnace | |
| CN206109472U (en) | Heat treatment clamp | |
| JPS6213985A (en) | Furnace muffle for vertical type muffle system continuous heat treating furnace | |
| JP3275919B2 (en) | Vertical furnace | |
| JPH0221757Y2 (en) | ||
| JP2520998Y2 (en) | Vertical pine full furnace | |
| JPH0238908Y2 (en) | ||
| JPS6135554Y2 (en) | ||
| JPH0612380Y2 (en) | Spacer for heat dissipation pipe | |
| JPH055439Y2 (en) | ||
| JPH089159Y2 (en) | Heat treatment equipment | |
| JPS6340786Y2 (en) | ||
| SU846949A1 (en) | Hood furnace muffle | |
| JPS6217118A (en) | Skid button | |
| JPH0121970Y2 (en) | ||
| JP3840679B2 (en) | Furnace internal structure | |
| JPS6321553Y2 (en) | ||
| JPH0737118Y2 (en) | Heat-resistant block for heating furnace ceiling partition wall | |
| KR950003995Y1 (en) | Tundish cover of air cooling type | |
| JPH0712876Y2 (en) | Vertical muffle furnace | |
| JPH0835016A (en) | Muffle in vertical muffle type continuous heat treatment furnace |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |