JPH0331424A - Heat treating device for steel pipe - Google Patents
Heat treating device for steel pipeInfo
- Publication number
- JPH0331424A JPH0331424A JP16275689A JP16275689A JPH0331424A JP H0331424 A JPH0331424 A JP H0331424A JP 16275689 A JP16275689 A JP 16275689A JP 16275689 A JP16275689 A JP 16275689A JP H0331424 A JPH0331424 A JP H0331424A
- Authority
- JP
- Japan
- Prior art keywords
- steel pipe
- heating furnace
- heat treatment
- heating
- conveyor
- 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.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 46
- 239000010959 steel Substances 0.000 title claims abstract description 46
- 238000010438 heat treatment Methods 0.000 claims abstract description 68
- 238000001816 cooling Methods 0.000 claims description 11
- 238000000137 annealing Methods 0.000 abstract description 22
- 238000011282 treatment Methods 0.000 abstract description 21
- 238000005496 tempering Methods 0.000 abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 9
- 238000010791 quenching Methods 0.000 description 13
- 230000000171 quenching effect Effects 0.000 description 13
- 238000010586 diagram Methods 0.000 description 11
- 238000003303 reheating Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 239000003595 mist Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Abstract
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は鋼管の熱処理装置に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a heat treatment apparatus for steel pipes.
［従来の技術］
第２図は従来の鋼管熱処理設備における焼入れ／焼もど
し装置を示す模式図である。この焼入れ／焼もどし装置
は、第１加熱炉１と第２加熱炉２とを宥し、両加熱炉１
，２の間に水槽３．水切ゾーン３Ａを備えて構成され、
第１加熱炉ｌにより温度Ｔ１に加熱した鋼管４を水槽３
に投入して焼入れし、その後、該鋼管４を第２加熱炉２
により温度Ｔ２にて焼もどしするように構成されている
。３Ｂはクーリングベツドである。[Prior Art] FIG. 2 is a schematic diagram showing a quenching/tempering device in a conventional steel pipe heat treatment facility. This quenching/tempering device includes a first heating furnace 1 and a second heating furnace 2, and both heating furnaces 1 and 2.
, 2 between the aquarium 3. It is configured with a draining zone 3A,
The steel pipe 4 heated to temperature T1 by the first heating furnace l is placed in the water tank 3.
After that, the steel pipe 4 is put into the second heating furnace 2.
The structure is such that tempering is performed at a temperature T2. 3B is a cooling bed.
他方、第３図は従来の鋼管熱処理設備における恒温焼な
まし装置を示す模式図である。この恒温焼なまし装置は
、連続熱処理炉５の・上流側から下流側に、順次、第１
加熱ゾーン６、冷却ゾーン７、第２加熱ゾーン８を配列
して構成され、第１加熱炉！により温度ＴＩに加熱した
鋼管４を冷却ゾーン７にて冷却し、その後、該鋼管４を
第２加熱ゾーン８により温度Ｔ２に保持して恒温焼なま
しするように構成されている。On the other hand, FIG. 3 is a schematic diagram showing a constant temperature annealing device in a conventional steel pipe heat treatment facility. This constant-temperature annealing device sequentially operates from the upstream side to the downstream side of the continuous heat treatment furnace 5.
The first heating furnace consists of a heating zone 6, a cooling zone 7, and a second heating zone 8. The steel pipe 4 heated to a temperature TI is cooled in a cooling zone 7, and then the steel pipe 4 is held at a temperature T2 in a second heating zone 8 for isothermal annealing.
〔発明が解決しようとする課窟］
然しながら、上記従来の鋼管熱処理設備にあっては、第
２図の如くの焼入れ／焼もどし装置と、第３図の如くの
頼温焼なまし装置の２装置を備える必要があり、設備が
大規模となる。[The problem to be solved by the invention] However, the conventional steel pipe heat treatment equipment described above has two devices: a quenching/tempering device as shown in FIG. 2, and a low-temperature annealing device as shown in FIG. It is necessary to provide equipment, and the equipment becomes large-scale.
又、恒温焼なまし装置を構成する連続熱処理炉５は、鋼
管４を縦列状態で投入するものであるため、第２加熱ゾ
ーン８の限られた炉長の中で一定の恒温保持時間を確保
するには、鋼管４の送り速度を低くする必要があり、生
産性が低い。In addition, since the continuous heat treatment furnace 5 that constitutes the constant temperature annealing device is used to feed the steel pipes 4 in tandem, a constant constant temperature holding time can be ensured within the limited furnace length of the second heating zone 8. In order to do this, it is necessary to lower the feeding speed of the steel pipe 4, which results in low productivity.
本発明は、焼入れＺ焼もどし処理と恒温焼なまし処理に
共用でき、かつ生産性の高い、鋼管の熱処理装置を提供
することを目的とする。An object of the present invention is to provide a heat treatment apparatus for steel pipes that can be used for both quenching and Z-tempering treatment and constant temperature annealing treatment and has high productivity.
［課題を解決するための手段］
本発明は、第１加熱炉と第２加熱炉とを有し、再加熱炉
の間に冷却槽を備えるとともに、冷却槽を迂回して再加
熱炉を結ぶコンベアを備′えて構成される、鋼管の熱処
理装置であって、（Ａ）第１加熱炉にて加熱した鋼管を
冷却槽に投入して焼入れし、その後該鋼管を第２加熱炉
にて焼もどしする熱処理と、（Ｂ）第１加熱炉にて加熱
した鋼管をコンベアにて搬送しながら冷却し、その後該
鋼管を第２加熱炉にて恒温焼なましする熱処理のいずれ
かを１選択的に実行し得るように構成されたものである
。[Means for Solving the Problems] The present invention includes a first heating furnace and a second heating furnace, a cooling tank is provided between the reheating furnaces, and the reheating furnaces are connected by bypassing the cooling tank. A steel pipe heat treatment apparatus comprising a conveyor, (A) a steel pipe heated in a first heating furnace is put into a cooling tank and quenched, and then the steel pipe is quenched in a second heating furnace. (B) A heat treatment in which the steel pipe heated in the first heating furnace is cooled while being conveyed on a conveyor, and then the steel pipe is constant-temperature annealed in the second heating furnace. It is structured so that it can be executed.
［作用］
本発明によれば、単一の熱処理装置を用いて、（Ａ）焼
入れ／焼もどし処理と、ＣＢ）恒温焼なまし処理とを選
択的に実行できる。[Operation] According to the present invention, (A) quenching/tempering treatment and CB) constant temperature annealing treatment can be selectively performed using a single heat treatment apparatus.
又、本発明によれば、熱処理装置を上述の（Ａ）焼入れ
／焼もどし処理と、（Ｂ）恒温焼なまし処理のいずれに
使用する場合にも、第１と第２の再加熱炉は鋼管を並列
状態で収容できる。このため。Further, according to the present invention, when the heat treatment apparatus is used for either of the above-mentioned (A) quenching/tempering treatment and (B) constant temperature annealing treatment, the first and second reheating furnaces are Steel pipes can be accommodated in parallel. For this reason.
鋼管の送り速度を低くすることなく、一定の恒温保持時
間等の加熱時間を確保でき、高い生産性を実現できる。It is possible to secure a constant heating time such as constant temperature holding time without reducing the feed rate of the steel pipe, and high productivity can be achieved.
［実施例］
第１図は本発明の熱処理装置を示す模式図、第２図は従
来の焼入れ／焼もどし装置を示す模式図、第３図は従来
の恒温焼なまし装置を示す模式図、第４図は本発明の熱
処理装置により実行した恒温焼なましパターンの一例を
示す線図である。[Example] Fig. 1 is a schematic diagram showing a heat treatment apparatus of the present invention, Fig. 2 is a schematic diagram showing a conventional quenching/tempering apparatus, and Fig. 3 is a schematic diagram showing a conventional constant temperature annealing apparatus. FIG. 4 is a diagram showing an example of a constant temperature annealing pattern executed by the heat treatment apparatus of the present invention.
熱処理装置１０は、第１図に示す如く、第１加鵡炉１１
と第２加熱炉１２とを有し、再加熱炉１１．１２の間に
水槽１３と水切ゾーン１４を備′えるとともに、水槽１
３、水切ゾーン１４を迂回して再加熱炉１１．−１２を
結ぶコンベア１５を備えて構成される。As shown in FIG. 1, the heat treatment apparatus 10 includes a first processing furnace 11
and a second heating furnace 12, and a water tank 13 and a draining zone 14 are provided between the reheating furnaces 11 and 12.
3. Bypassing the draining zone 14, the reheating furnace 11. -12 is provided with a conveyor 15.
然して、上記熱処理装！ｌＯは、第１図（Ａ）に示す経
路にて鋼管４を移送して行なう焼入れ／焼もどし処理と
、第１図（Ｂ）に示す経路にて鋼管４を移送して行なう
恒温焼なまし処理のいずれかを１選択的に実行し得る。Of course, the above heat treatment equipment! 1O is a quenching/tempering process performed by transporting the steel pipe 4 along the route shown in Figure 1(A), and a constant temperature annealing process performed by transporting the steel pipe 4 through the route shown in Figure 1(B). Any one of the processes can be selectively performed.
即ち、焼入れ／焼もどし処理については、第１加熱炉１
１により温度Ｔ１に加熱した鋼管４を水槽１３に投入し
て焼入れし、その後、該鋼管４を第２加熱炉１２により
温度Ｔ２に焼もどしする。That is, for the quenching/tempering treatment, the first heating furnace 1
The steel pipe 4 heated to a temperature T1 in step 1 is put into a water tank 13 and quenched, and then the steel pipe 4 is tempered in a second heating furnace 12 to a temperature T2.
又、恒温焼なまし処理については、第１加熱炉１１によ
り温度ＴＩに加熱した鋼管４をコンベア１５にて搬送し
ながら冷却し、その後、−該鋼管４を第２加熱炉１２に
より温度Ｔ２に保持して恒温焼なましする。Regarding the constant temperature annealing treatment, the steel pipe 4 heated to temperature TI in the first heating furnace 11 is cooled while being conveyed by the conveyor 15, and then - the steel pipe 4 is heated to temperature T2 in the second heating furnace 12. Hold and anneal at constant temperature.
尚、恒温焼なまし処理において、コンベア１５で冷却せ
しめられる鋼管４は、このコンベア１５での搬送速度の
調整、エアブロ−、オイルミスト、或いは、水ミストの
供給量の調整により、制御冷却され、最適な冷却時間に
て所定温度まで急冷せしめられる。In addition, in the constant temperature annealing process, the steel pipe 4 cooled by the conveyor 15 is cooled in a controlled manner by adjusting the conveyance speed of the conveyor 15 and adjusting the supply amount of air blow, oil mist, or water mist. It is rapidly cooled to a predetermined temperature in an optimal cooling time.
以下、上記実施例の作用について説明する。Hereinafter, the operation of the above embodiment will be explained.
上記実施例によれば、単一の熱処理′装置１０を用いて
、第１図（Ａ）の焼入れ／焼もどし処理と、第１図ＣＢ
）の恒温焼なまし“処理とを、選択的に実行できる。According to the above embodiment, a single heat treatment apparatus 10 is used to perform the quenching/tempering treatment shown in FIG.
) can be selectively performed.
又、本発明によれば、熱処理装Ｈ１Ｏを上述の（Ａ）焼
入れ／焼もどし処理と、ＣＢ）恒温焼なまし処理のいず
れに使用する場合にも、第１と第２の再加熱炉１１．１
２は鋼管４を並列状態で収容できる。このため、鋼管４
の送り速度を低くすることなく、一定の恒温保持時間等
の加熱時間を確保でき、高い生産性を実現できる。Further, according to the present invention, when the heat treatment equipment H1O is used for either of the above-mentioned (A) quenching/tempering treatment and CB) constant temperature annealing treatment, the first and second reheating furnaces 11 .1
2 can accommodate steel pipes 4 in parallel. For this reason, steel pipe 4
It is possible to secure a constant heating time such as constant temperature holding time without reducing the feed rate, and high productivity can be achieved.
本発明者は１本発明の熱処理装置を用いて、外径７８．
３ｓｍφ、肉厚１１．５ｍ５ｔ、長さ８０００ ｔ＋ｓ
の鋼管にっいて、第４図に示すパターンで恒温焼なまし
処理を施した。結果、表１に示す如く、本発明によれば
、従来の連続熱処理炉による場合に比して、生産性を大
幅に向上し、かつエネルギーコストを大幅に削減しなが
ら、従来と同等の材料強度を確保できることが認められ
た。The present inventor used the heat treatment apparatus of the present invention to obtain an outer diameter of 78.
3smφ, wall thickness 11.5m5t, length 8000t+s
The steel pipes were subjected to constant temperature annealing treatment according to the pattern shown in Figure 4. As a result, as shown in Table 1, according to the present invention, compared to the case of using a conventional continuous heat treatment furnace, productivity is significantly improved and energy costs are significantly reduced, while material strength equivalent to that of the conventional method is achieved. It was recognized that it was possible to secure the
［発明の効果］
以上のように本発明によれば、焼入れ／焼もどし処理と
恒温焼なまし処理に共用でき、かつ生産性の高い、鋼管
の熱処理装置を得ることができる。[Effects of the Invention] As described above, according to the present invention, it is possible to obtain a steel pipe heat treatment apparatus that can be used for both quenching/tempering treatment and isothermal annealing treatment and has high productivity.
第１図は本発明の熱処理装置を示す模式図、第２図は従
来の焼入れ／焼もどし装置を示す模式図、第３図は従来
の恒温焼なまし装置を示す模式図、第４図は本発明の熱
処理装置により実行した恒温焼なましパターンの一例を
示す線図であ２・・・第２加熱炉、
３・・・水槽（冷却槽）
１５０．、コンベア。Fig. 1 is a schematic diagram showing a heat treatment apparatus of the present invention, Fig. 2 is a schematic diagram showing a conventional quenching/tempering apparatus, Fig. 3 is a schematic diagram showing a conventional constant temperature annealing apparatus, and Fig. 4 is a schematic diagram showing a conventional constant temperature annealing apparatus. 2 is a diagram showing an example of a constant temperature annealing pattern executed by the heat treatment apparatus of the present invention; 2... second heating furnace; 3... water tank (cooling tank) 150. ,Conveyor.
Claims (1)
に冷却槽を備えるとともに、冷却槽を迂回して両加熱炉
を結ぶコンベアを備えて構成される、鋼管の熱処理装置
であって、（Ａ）第１加熱炉にて加熱した鋼管を冷却槽
に投入して焼入れし、その後該鋼管を第２加熱炉にて焼
もどしする熱処理と、（Ｂ）第１加熱炉にて加熱した鋼
管をコンベアにて搬送しながら冷却し、その後該鋼管を
第２加熱炉にて恒温焼なましする熱処理のいずれかを、
選択的に実行し得るように構成された、鋼管の熱処理装
置。(1) A steel pipe comprising a first heating furnace and a second heating furnace, a cooling tank between the two heating furnaces, and a conveyor that bypasses the cooling tank and connects the two heating furnaces. The heat treatment apparatus includes (A) a heat treatment in which a steel pipe heated in a first heating furnace is put into a cooling tank and quenched, and then the steel pipe is tempered in a second heating furnace; and (B) a first heating. A heat treatment in which a steel pipe heated in a furnace is cooled while being conveyed by a conveyor, and then the steel pipe is constant-temperature annealed in a second heating furnace,
A steel pipe heat treatment device configured to selectively perform heat treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16275689A JPH0331424A (en) | 1989-06-27 | 1989-06-27 | Heat treating device for steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16275689A JPH0331424A (en) | 1989-06-27 | 1989-06-27 | Heat treating device for steel pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0331424A true JPH0331424A (en) | 1991-02-12 |
Family
ID=15760648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16275689A Pending JPH0331424A (en) | 1989-06-27 | 1989-06-27 | Heat treating device for steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0331424A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008231487A (en) * | 2007-03-19 | 2008-10-02 | Jfe Steel Kk | Device for quenching pipe |
-
1989
- 1989-06-27 JP JP16275689A patent/JPH0331424A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008231487A (en) * | 2007-03-19 | 2008-10-02 | Jfe Steel Kk | Device for quenching pipe |
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