JPH03165918A - Cooling device for high cr pipe - Google Patents
Cooling device for high cr pipeInfo
- Publication number
- JPH03165918A JPH03165918A JP30570589A JP30570589A JPH03165918A JP H03165918 A JPH03165918 A JP H03165918A JP 30570589 A JP30570589 A JP 30570589A JP 30570589 A JP30570589 A JP 30570589A JP H03165918 A JPH03165918 A JP H03165918A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- cooling
- pipe
- chain conveyor
- thermometer
- 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
- 238000001816 cooling Methods 0.000 title claims abstract description 26
- 238000007664 blowing Methods 0.000 claims abstract description 7
- 238000003303 reheating Methods 0.000 claims description 13
- 229910000831 Steel Inorganic materials 0.000 abstract description 5
- 239000010959 steel Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 abstract 3
- 238000005096 rolling process Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/02—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
- B21B45/0203—Cooling
- B21B45/0209—Cooling devices, e.g. using gaseous coolants
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は高Ｃｒ材からなるマンドレルミル素管を冷却
するための冷却装置に関するものである〔従来の技術〕
高Ｃｒ材、例えば高Ｃｒ−Ｍｏを主成分とした継ぎ目無
し鋼管の圧延ラインは、傾斜穿孔機、マンドレルミル、
再熱炉、ストレッチレデューサ等によって構成されてい
る。この高Ｃｒ−Ｍｏ鋼管圧延時において、マンドレル
ミル素管を所定の温度まで冷却することにより焼ならし
効果を与えることが可能である。従って、従来からこの
焼ならしが行われている。Detailed Description of the Invention [Field of Industrial Application] This invention relates to a cooling device for cooling a mandrel mill tube made of a high Cr material. [Prior Art] A high Cr material, e.g. The rolling line for seamless steel pipes with Mo as the main component uses inclined boring machines, mandrel mills,
It consists of a reheating furnace, stretch reducer, etc. During rolling of this high Cr-Mo steel pipe, it is possible to provide a normalizing effect by cooling the mandrel mill tube to a predetermined temperature. Therefore, this normalizing has been conventionally performed.
しかしながら、圧延ラインにおいては再熱炉の燃料原単
位およびスペースの問題から、マンドレルミルと再熱炉
間の間隔は短いのが一般的である。このため、マンドレ
ルミル素管を所定の温度まで冷却するためには圧延ピッ
チを落とさねばならず能率が低下する。However, in rolling lines, the distance between the mandrel mill and the reheating furnace is generally short due to fuel consumption and space issues in the reheating furnace. Therefore, in order to cool the mandrel mill tube to a predetermined temperature, the rolling pitch must be reduced, resulting in a decrease in efficiency.
一方、冷却時間を短縮するためには水冷が効果的である
が、高Ｃｒ−Ｍｏ鋼は割れ感受性が強く、また同一パイ
プ内で冷却速度が異なると、管の曲がりを誘発し搬送不
能となるため事実上水冷は不可能である。On the other hand, water cooling is effective for shortening the cooling time, but high Cr-Mo steel is highly susceptible to cracking, and if the cooling rate differs within the same pipe, it will cause the pipe to bend, making it impossible to transport. Therefore, water cooling is virtually impossible.
従って、この発明の目的は上述の問題を解決し、圧延ラ
インの作業能率および管の品質を低下することなくマン
ドレル素管を所定の温度まで冷却し焼ならしを行うこと
ができる高Ｃｒ管の冷却装置を提供することにある。Therefore, an object of the present invention is to solve the above-mentioned problems and to develop a high Cr tube that can cool and normalize a mandrel blank tube to a predetermined temperature without reducing the work efficiency of a rolling line or the quality of the tube. The purpose is to provide a cooling device.
この発明は、マンドレルミルと再熱炉との間に設けられ
た、前記マンドレルミルから排出された管を前記再熱炉
まで搬送するためのチェーンコンベアと、前記チェーン
コンベアの少なくとも一方の側面から所定間隔をあけた
位置に、前記管の移動方向と同方向に所定間隔をあけて
、前記チェーンコンベアで搬送される管の軸線の高さと
略同じ高さに設けられた、前記管の内表面を冷却するた
めの複数個のエアー吹き出しノズルと、前記チェーンコ
ンベアの周囲に設けられた前記管の外表面を冷却するた
めのファンとからなることに特徴を有するものである。This invention includes a chain conveyor provided between a mandrel mill and a reheating furnace for conveying a tube discharged from the mandrel mill to the reheating furnace, and a The inner surface of the tube is provided at a predetermined interval in the same direction as the moving direction of the tube and at approximately the same height as the axis of the tube conveyed by the chain conveyor. It is characterized by comprising a plurality of air blowing nozzles for cooling, and a fan for cooling the outer surface of the tube, which is provided around the chain conveyor.
また、前記チェーンコンベアの下流端に温度計を設け、
さらに前記温度計に表示器および警報機を取り付け、前
記温度計が測定した管の温度を前記表示器によって表示
するとともに、前記温度計によって測定された管の温度
と設定値とを比較し所定値以上の差があるときは前記警
報機によって警報を発することに特徴を有するものであ
る。Further, a thermometer is provided at the downstream end of the chain conveyor,
Furthermore, a display device and an alarm are attached to the thermometer, and the temperature of the tube measured by the thermometer is displayed by the display device, and the temperature of the tube measured by the thermometer is compared with a set value to a predetermined value. The present invention is characterized in that when the above difference exists, an alarm is issued by the alarm device.
次ぎにこの発明を図面を参照しながら説明する。第１図
はこの発明のｌ実施態様を示す平面図である（但し、管
はやや斜視図的に描かれている）。図面に示すように本
発明の冷却装置は、チェーンコンベア５と、エアー吹き
出しノズル８と、ファン１０とからなり、マンドレルミ
ルｌおよび再熱炉２間に設置されている。マンドレルミ
ル１の出口１ａから排出された管４ａ（マンドレルバ−
３が挿入されている）は、この位置から再熱炉２に向け
て幅方向（以下「移動方向」という）に移動する。管４
ａの移動方向下流側には、バーストリッパ７が設けられ
ている。管４においてはここでマンドレルバ−３が抜き
取られる。バーストリッパ７よりもさらに下流側にはチ
ェーンコンベア５が設けられている。チェーンコンベア
５は複数条のチェーン５ａからなっており、各チェーン
５ａには複数のドック６が所定間隔をあけて配設されて
いる・。バーストリッパ７によってマンドレルバ−３を
抜き取られた管４は、ここから再熱炉２までチェーンコ
ンベア５によって搬送される。上述したようにチェーン
コンベア５にはドック６が取り付けられているので管の
曲がりを低減し且つ冷却効率を上げるうえにおいて有効
である。チェーンコンベア一 ５ −
５のマンドレルミルｌが設置されている側と反対側の側
面から所定間隔をあけた位置には、エアー吹き出しノズ
ル８が管４の移動方向と同方向に互いに所定間隔をあけ
て複数個配設されている。ノズル８の先端はチェーンコ
ンベア５によって搬送されてくる管４の先端に向けてエ
アーが吹き出すように、搬送される管４の軸線の高さと
ほぼ同じ高さに設けられている。９はエアーコンプレッ
サである。ノズル８から吹き出したエアーによって搬送
中の管４の内表面の冷却が行われる。チェーンコンベア
５の下流端よりもさらに下流に所定間隔離れた位置には
、管４の長手方向に互いに所定間隔をあけて複数のファ
ンｌＯが設けられている。Next, the present invention will be explained with reference to the drawings. FIG. 1 is a plan view showing one embodiment of the invention (although the tube is drawn in a somewhat perspective view). As shown in the drawings, the cooling device of the present invention includes a chain conveyor 5, an air blowing nozzle 8, and a fan 10, and is installed between a mandrel mill 1 and a reheating furnace 2. Pipe 4a (mandrel bar) discharged from outlet 1a of mandrel mill 1
3 inserted) moves from this position toward the reheating furnace 2 in the width direction (hereinafter referred to as the "moving direction"). tube 4
A burst stripper 7 is provided on the downstream side of a in the moving direction. The mandrel bar 3 is now removed from the tube 4. A chain conveyor 5 is provided further downstream than the burst stripper 7. The chain conveyor 5 consists of a plurality of chains 5a, and each chain 5a has a plurality of docks 6 arranged at predetermined intervals. The pipe 4 from which the mandrel bar 3 has been removed by the burst stripper 7 is conveyed from here to the reheating furnace 2 by a chain conveyor 5. As described above, since the dock 6 is attached to the chain conveyor 5, it is effective in reducing bending of the pipe and increasing cooling efficiency. Air blowing nozzles 8 are installed at predetermined intervals in the same direction as the moving direction of the tube 4 at positions spaced apart from the side of the chain conveyor 15-5 opposite to the side where the mandrel mill l is installed. Multiple units are installed. The tip of the nozzle 8 is provided at approximately the same height as the axis of the tube 4 being conveyed so that air is blown toward the tip of the tube 4 being conveyed by the chain conveyor 5. 9 is an air compressor. The air blown out from the nozzle 8 cools the inner surface of the tube 4 during transport. A plurality of fans 10 are provided at a predetermined interval further downstream than the downstream end of the chain conveyor 5, and spaced apart from each other by a predetermined interval in the longitudinal direction of the pipe 4.
ファン１０からチェーンコンベア５上の管４の外表面に
向けて送風が行われ管４の外表面が冷却される。Air is blown from the fan 10 toward the outer surface of the tube 4 on the chain conveyor 5, thereby cooling the outer surface of the tube 4.
チェーンコンベア５の下流端には、ファン１０と再熱炉
２との間に温度計１１が設けられている。温度計１１は
チェーンコンベア５の下流端まで搬送された管４の温度
を測定する。さらに、温度計１１にー ６ −
は表示器ｌ２および警報機１３が取り付けられており、
表示器ｌ２は温度計１１が測定した管４の温度を表示す
る。また、警報機１３は温度計１１によって測定された
管４の温度と設定値とを比較し両者の間に所定値以上の
差があるときは警報を発する。A thermometer 11 is provided at the downstream end of the chain conveyor 5 between the fan 10 and the reheating furnace 2. Thermometer 11 measures the temperature of tube 4 conveyed to the downstream end of chain conveyor 5. Furthermore, a display l2 and an alarm 13 are attached to the thermometer 11.
The display l2 displays the temperature of the tube 4 measured by the thermometer 11. Further, the alarm device 13 compares the temperature of the pipe 4 measured by the thermometer 11 with a set value, and issues an alarm when there is a difference between the two by a predetermined value or more.
このように、管４はノズル８およびファン１０によって
内表面および外表面の両面から効率良く空冷されるので
短時間で所定温度に伶却する。また、各管４の温度も温
度計１１、表示器ｌ２、警報機ｌ３によってチェックさ
れるので管の品質管理も的確に行える。In this way, the tube 4 is efficiently air-cooled from both the inner and outer surfaces by the nozzle 8 and the fan 10, so that the tube 4 is cooled to a predetermined temperature in a short time. In addition, since the temperature of each tube 4 is also checked by the thermometer 11, the indicator l2, and the alarm l3, the quality of the tubes can be accurately controlled.
以上説明したように、この発明の冷却装置は空冷式なの
で冷却した高Ｃｒ鋼の素管が割れたり変形したりするこ
とがなく、しかもマンドレルミルから排出された素管を
再熱炉に装入するまでの間のわずかな時間で迅速に冷却
することができるので圧延能率が向上する産業上有用な
効果がもたらされる。As explained above, since the cooling device of the present invention is air-cooled, the cooled high Cr steel tube does not crack or deform, and the tube discharged from the mandrel mill can be charged into the reheating furnace. Since the rolling process can be quickly cooled in a short period of time, the rolling efficiency can be improved, which is an industrially useful effect.
第１図はこの発明の１実施態様を示す平面図である。図
面において、
１・−マンドレルミル、
ｌａ−−一出口、
２一再熱炉、
３・−・マンドレルバー
４ 、４ａ−管、
５，．．チェーンコンベア、
５ａ− チェーン、
６・−・トツク１
７．．．バーストリッパ、
８．．．エアー吹き出しノズル、
９−エアーコンプレツサ、
１０．・，ファン、
１ １−．温度計、
ｌ２一表示器、
ｌ３・−．警報機。FIG. 1 is a plan view showing one embodiment of the present invention. In the drawings: 1--mandrel mill, la--one outlet, 2--reheating furnace, 3-- mandrel bar 4, 4a--tube, 5,. ．． Chain conveyor, 5a-Chain, 6...Tock 1 7. ．． ．． Burst stripper, 8. ．． ．． Air blowing nozzle, 9-Air compressor, 10.・, Fan, 1 1-. Thermometer, l2-indicator, l3・-. Alarm.
Claims (1)
マンドレルミルから排出された管を前記再熱炉まで搬送
するためのチェーンコンベアと、前記チェーンコンベア
の少なくとも一方の側面から所定間隔をあけた位置に、
前記管の移動方向と同方向に所定間隔をあけて、前記チ
ェーンコンベアで搬送される管の軸線の高さと略同じ高
さに設けられた、前記管の内表面を冷却するための複数
個のエアー吹き出しノズルと、前記チェーンコンベアの
周囲に設けられた前記管の外表面を冷却するためのファ
ンとからなることを特徴とする高Ｃｒ管の冷却装置。 ２ 前記チェーンコンベアの下流端に温度計を設け、さ
らに前記温度計に表示器および警報機を取り付け、前記
温度計が測定した管の温度を前記表示器によって表示す
るとともに、前記温度計によって測定された管の温度と
設定値とを比較し所定値以上の差があるときは前記警報
機によって警報を発する請求項１記載の高Ｃｒ管の冷却
装置。[Scope of Claims] 1. A chain conveyor provided between a mandrel mill and a reheating furnace for conveying a tube discharged from the mandrel mill to the reheating furnace, and at least one of the chain conveyors. At a certain distance from the side,
A plurality of tubes for cooling the inner surface of the tube are provided at predetermined intervals in the same direction as the tube movement direction and at approximately the same height as the axis of the tube conveyed by the chain conveyor. A cooling device for a high Cr tube, comprising an air blowing nozzle and a fan provided around the chain conveyor for cooling the outer surface of the tube. 2. A thermometer is provided at the downstream end of the chain conveyor, and a display and an alarm are attached to the thermometer, so that the temperature of the tube measured by the thermometer is displayed by the display, and the temperature of the tube measured by the thermometer is displayed. 2. The cooling device for a high Cr pipe according to claim 1, wherein the temperature of the pipe is compared with a set value, and if there is a difference of more than a predetermined value, an alarm is issued by the alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30570589A JPH03165918A (en) | 1989-11-24 | 1989-11-24 | Cooling device for high cr pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30570589A JPH03165918A (en) | 1989-11-24 | 1989-11-24 | Cooling device for high cr pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03165918A true JPH03165918A (en) | 1991-07-17 |
Family
ID=17948370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30570589A Pending JPH03165918A (en) | 1989-11-24 | 1989-11-24 | Cooling device for high cr pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03165918A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009118962A1 (en) * | 2008-03-27 | 2009-10-01 | 住友金属工業株式会社 | Air-cooling facility for heat treatment process of martensite based stainless steel pipe |
| CN102266872A (en) * | 2011-07-27 | 2011-12-07 | 中冶赛迪工程技术股份有限公司 | Steel tube cooling device |
| CN103290196A (en) * | 2013-06-17 | 2013-09-11 | 攀钢集团成都钢钒有限公司 | Method for cooling steel tubes after normalizing |
-
1989
- 1989-11-24 JP JP30570589A patent/JPH03165918A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009118962A1 (en) * | 2008-03-27 | 2009-10-01 | 住友金属工業株式会社 | Air-cooling facility for heat treatment process of martensite based stainless steel pipe |
| EP2264194A1 (en) * | 2008-03-27 | 2010-12-22 | Sumitomo Metal Industries, Ltd. | Air-cooling facility for heat treatment process of martensite based stainless steel pipe |
| US20110120691A1 (en) * | 2008-03-27 | 2011-05-26 | Sumitomo Metal Industries, Ltd. | Air cooling equipment for heat treatment process for martensitic stainless steel pipe or tube |
| EP2264194A4 (en) * | 2008-03-27 | 2014-09-03 | Nippon Steel & Sumitomo Metal Corp | Air-cooling facility for heat treatment process of martensite based stainless steel pipe |
| US9181610B2 (en) | 2008-03-27 | 2015-11-10 | Nippon Steel & Sumitomo Metal Corporation | Air cooling equipment for heat treatment process for martensitic stainless steel pipe or tube |
| CN102266872A (en) * | 2011-07-27 | 2011-12-07 | 中冶赛迪工程技术股份有限公司 | Steel tube cooling device |
| CN103290196A (en) * | 2013-06-17 | 2013-09-11 | 攀钢集团成都钢钒有限公司 | Method for cooling steel tubes after normalizing |
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