JPH017715Y2 - - Google Patents
Info
- Publication number
- JPH017715Y2 JPH017715Y2 JP1985082191U JP8219185U JPH017715Y2 JP H017715 Y2 JPH017715 Y2 JP H017715Y2 JP 1985082191 U JP1985082191 U JP 1985082191U JP 8219185 U JP8219185 U JP 8219185U JP H017715 Y2 JPH017715 Y2 JP H017715Y2
- Authority
- JP
- Japan
- Prior art keywords
- roll
- furnace
- cooling
- heat treatment
- present
- 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
Links
- 238000010438 heat treatment Methods 0.000 claims description 18
- 238000001816 cooling Methods 0.000 claims description 15
- 239000000112 cooling gas Substances 0.000 claims description 8
- 238000007664 blowing Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
Landscapes
- Heat Treatment Of Articles (AREA)
Description
【考案の詳細な説明】
〈産業上の利用分野〉
本考案は、炉冷時の温度制御が極めて容易かつ
正確に実施できるロール熱処理炉に関するもので
ある。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a roll heat treatment furnace in which temperature control during furnace cooling can be carried out extremely easily and accurately.
〈従来の技術及び問題点〉
周知の様に、ロールは軸部と胴部では、その熱
容量が大きく異なるために、熱処理時の温度制御
には難しい問題がある。<Prior Art and Problems> As is well known, the shaft portion and body portion of a roll have a large difference in heat capacity, so there is a difficult problem in temperature control during heat treatment.
軸部と胴部を同じ温度パターンで推移させるた
めに、保持時間を変えたり、あるいはヒーターを
細分化して、それぞれ独自にON−OFF制御する
ことも行われているが、必ずしもうまく行つてい
ない。特に大径ロールを炉冷するとき、胴部の冷
却は遅れがちになり、ヒーターの局部的なON−
OFF制御だけでは調整が困難である。 In order to maintain the same temperature pattern in the shaft and body, attempts have been made to change the holding time or to subdivide the heater and control each part independently on and off, but this has not always worked. . Especially when cooling large-diameter rolls in a furnace, the cooling of the body tends to be delayed, causing the heater to be turned on locally.
Adjustment is difficult with only OFF control.
本考案は、以上の様な問題点に鑑みてなされた
ものであり、炉冷時、軸部と胴部の温度を完全に
同調させることができ、プログラム通りの冷却が
可能なロール熱処理炉を提供せんとするものであ
る。 The present invention was developed in view of the above-mentioned problems, and it is a roll heat treatment furnace that can completely synchronize the temperatures of the shaft and body during furnace cooling, and that can perform cooling according to the program. This is what we intend to provide.
〈問題点を解決するための手段〉
本考案者は、上記問題点に関して鋭意研究を行
つた結果、胴部の冷却の遅れについてはこの部分
を局部的に冷却することにより、有効に解消し得
ることを発見した。本考案はかかる知見に基づき
なされたものである。即ち、本考案のロール熱処
理炉は、炉体と発熱体と加熱空間とを有し、前記
加熱空間内に閉塞状態の炉内でロールの胴部を冷
却するための冷却ガス吹き込み用パイプを有し、
前記パイプの冷却ガス吹き出し口は前記ロールの
胴部の近傍に位置することを特徴とするものであ
る。<Means for Solving the Problems> As a result of intensive research into the above problems, the inventor of the present invention found that the delay in cooling the torso can be effectively resolved by cooling this part locally. I discovered that. The present invention was made based on this knowledge. That is, the roll heat treatment furnace of the present invention has a furnace body, a heating element, and a heating space, and has a cooling gas blowing pipe in the heating space for cooling the body of the roll in the closed furnace. death,
The cooling gas outlet of the pipe is located near the body of the roll.
〈実施例〉 本考案を図面によつて説明する。<Example> The present invention will be explained with reference to the drawings.
第１図、第２図は本考案のロール熱処理炉の説
明図であり、第１図は縦断面を、第２図は第１図
のＡ−Ａ断面をそれぞれ示す。 1 and 2 are explanatory diagrams of the roll heat treatment furnace of the present invention, with FIG. 1 showing a longitudinal cross section and FIG. 2 showing a cross section taken along the line AA in FIG. 1, respectively.
図中１は炉体を示し、２は発熱体（ヒーター）
を示すが、これらの構造は従来のものと何ら変る
所がない。 In the figure, 1 indicates the furnace body, and 2 indicates the heating element (heater).
However, these structures are no different from conventional ones.
本考案の特徴とする所は、空気吹き込み用のパ
イプ３を炉外から炉底４を貫通して炉内に引き入
れ、先端部６をロール５の胴部５ａで開口させた
ことである。 The feature of the present invention is that the air blowing pipe 3 is drawn into the furnace from outside the furnace through the furnace bottom 4, and the tip 6 is opened at the body 5a of the roll 5.
外から吹き込まれた空気は、丁度ロール胴部５
ａの部分で噴射され、この部分に局部的に温度の
低い雰囲気が形成され、胴部の冷却が促進され
る。 The air blown in from the outside just hits the roll body 5.
It is injected at the part a, and a low-temperature atmosphere is locally formed in this part, promoting cooling of the torso.
一方胴部から離れたロール軸部５ｂの部分で
は、吹き込み空気は炉中雰囲気に同化されてしま
い、スポツト的な冷却効果は希薄になつてくるの
で、軸部も一諸に冷却されることはない。 On the other hand, in the part of the roll shaft 5b that is away from the body, the blown air is assimilated into the furnace atmosphere, and the spot cooling effect becomes weak, so the shaft is not cooled all at once. do not have.
パイプ３の炉中での配置の仕方及び開口部の形
状は本図に示したもののみに限定されるものでは
ないが、基本的にはロール胴部５ａの周囲が均等
に冷却される必要があるので、第２図のＡ−Ａ断
面図に示した様に空気吹き出し口６がロール周囲
に均等に配置され、冷却に偏りが生じない様にす
る必要がある。 The arrangement of the pipe 3 in the furnace and the shape of the opening are not limited to those shown in this figure, but basically the area around the roll body 5a needs to be cooled evenly. Therefore, it is necessary to arrange the air outlets 6 evenly around the roll, as shown in the AA cross-sectional view of FIG. 2, to prevent uneven cooling.
本実施例においては、パイプ３は炉底４から突
出しているが、本考案はかかる構造に限定される
ものではなく、空気吹き出し口６がロールの胴部
近傍に位置する限り、いかなる構造のものでもよ
い。また冷却用ガスとして空気を用いるのが経済
的観点から望ましいが、空気以外のガスも使用す
ることができ、特に酸化防止の観点から不活性ガ
スを使用することもできる。 In this embodiment, the pipe 3 protrudes from the hearth bottom 4, but the present invention is not limited to this structure, and may be of any structure as long as the air outlet 6 is located near the body of the roll. But that's fine. Although it is desirable from an economical point of view to use air as the cooling gas, gases other than air can also be used, and in particular, inert gases can also be used from the point of view of preventing oxidation.
〈考案の効果〉
本考案のロール熱処理炉は、ロールの胴部付傍
に開口する冷却ガス吹き出し口を有するパイプを
有するので、吹き出す冷却ガスの温度及び／又は
流量を適当に調節することにより、ロール胴部の
冷却速度をロール軸部の冷却速度と実質的に等し
くすることができる。また冷却ガス吹き出しによ
り、全体的な冷却速度を早くすることもできる。
従つて、本考案の炉によりロールの胴部と軸部と
でムラのない熱処理を行うことができる。<Effects of the invention> Since the roll heat treatment furnace of the present invention has a pipe having a cooling gas outlet that opens near the body of the roll, by appropriately adjusting the temperature and/or flow rate of the cooling gas that is blown out, The cooling rate of the roll body can be made substantially equal to the cooling rate of the roll shaft. In addition, the overall cooling rate can be increased by blowing out cooling gas.
Therefore, with the furnace of the present invention, even heat treatment can be performed on the body and shaft of the roll.
第１図、第２図は本考案のロール熱処理炉の説
明図であり、第１図は縦断面を、第２図は第１図
のＡ−Ａ断面をそれぞれ示す。
１……炉体、２……発熱体、３……空気吹き込
みパイプ、４……炉底、５……ロール、５ａ……
ロール胴部、５ｂ……ロール軸部、６……空気吹
き出し口。
1 and 2 are explanatory diagrams of the roll heat treatment furnace of the present invention, with FIG. 1 showing a longitudinal cross section and FIG. 2 showing a cross section taken along the line AA in FIG. 1, respectively. 1... Furnace body, 2... Heating element, 3... Air blowing pipe, 4... Furnace bottom, 5... Roll, 5a...
Roll body, 5b... Roll shaft, 6... Air outlet.
Claims (1)
理炉において、前記加熱空間内に閉塞状態の炉内
でロールの胴部を冷却するための冷却ガス吹き込
み用パイプを有し、前記パイプの冷却ガス吹き出
し口は前記ロールの胴部の近傍に位置することを
特徴とするロール熱処理炉。 In a roll heat treatment furnace having a furnace body, a heating element, and a heating space, a pipe for blowing cooling gas for cooling the body of the roll in the closed furnace is provided in the heating space, and the cooling gas in the pipe is provided. A roll heat treatment furnace characterized in that an air outlet is located near the body of the roll.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985082191U JPH017715Y2 (en) | 1985-05-31 | 1985-05-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985082191U JPH017715Y2 (en) | 1985-05-31 | 1985-05-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61199565U JPS61199565U (en) | 1986-12-13 |
| JPH017715Y2 true JPH017715Y2 (en) | 1989-03-01 |
Family
ID=30629687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985082191U Expired JPH017715Y2 (en) | 1985-05-31 | 1985-05-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH017715Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54120212A (en) * | 1978-03-11 | 1979-09-18 | Kubota Ltd | Heat treatment apparatus of rolls |
| JPS6026617A (en) * | 1983-07-22 | 1985-02-09 | Hitachi Ltd | Method for decreasing residual stress of work roll for cold rolling |
-
1985
- 1985-05-31 JP JP1985082191U patent/JPH017715Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54120212A (en) * | 1978-03-11 | 1979-09-18 | Kubota Ltd | Heat treatment apparatus of rolls |
| JPS6026617A (en) * | 1983-07-22 | 1985-02-09 | Hitachi Ltd | Method for decreasing residual stress of work roll for cold rolling |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61199565U (en) | 1986-12-13 |
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