JPH01255619A - Method for cooling steel - Google Patents
Method for cooling steelInfo
- Publication number
- JPH01255619A JPH01255619A JP8277188A JP8277188A JPH01255619A JP H01255619 A JPH01255619 A JP H01255619A JP 8277188 A JP8277188 A JP 8277188A JP 8277188 A JP8277188 A JP 8277188A JP H01255619 A JPH01255619 A JP H01255619A
- Authority
- JP
- Japan
- Prior art keywords
- cooling
- cooling chamber
- temp
- tube
- cooled
- 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
- 238000001816 cooling Methods 0.000 title claims abstract description 38
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 18
- 239000010959 steel Substances 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000009835 boiling Methods 0.000 claims abstract description 8
- 238000009834 vaporization Methods 0.000 claims abstract description 8
- 230000008016 vaporization Effects 0.000 claims abstract description 8
- 230000000694 effects Effects 0.000 abstract description 8
- 238000010438 heat treatment Methods 0.000 abstract description 8
- 229910000760 Hardened steel Inorganic materials 0.000 abstract description 2
- 238000000137 annealing Methods 0.000 abstract 1
- 239000000498 cooling water Substances 0.000 description 7
- 238000003756 stirring Methods 0.000 description 6
- 238000004891 communication Methods 0.000 description 3
- 229910001562 pearlite Inorganic materials 0.000 description 2
- 229910001566 austenite Inorganic materials 0.000 description 1
- 229910001563 bainite Inorganic materials 0.000 description 1
- 238000010273 cold forging Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
Landscapes
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は熱処理分野における鋼（ワーク）の冷却、特に
、鋼の規準（焼ならし）に最適な冷却方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to the cooling of steel (workpieces) in the field of heat treatment, and in particular to a cooling method optimal for steel standards (normalizing).
冷鍛後の規準で肌焼鋼は通常の空冷では軟く粘っこい、
急冷しすぎると硬く削りにくい。被剛性に優れたＨＲＢ
８５〜９０になるよう冷却速度を制御する。Based on the standards after cold forging, case hardened steel is soft and sticky when cooled by normal air cooling.
If it cools too quickly, it will become hard and difficult to sharpen. HRB with excellent rigidity
The cooling rate is controlled to 85-90.
オーステナイトを過冷し５００℃附近でパーライトを生
成させ微細パーライトの面積率を大きくし硬くする５０
０℃以下も急冷するとベイナイトが生成Ｉ−硬くなりす
ぎる。Supercool austenite to generate pearlite around 500℃ to increase the area ratio of fine pearlite and harden it 50
If it is rapidly cooled below 0°C, bainite will be formed.I- It will become too hard.
焼漁温度より５００℃近くまでは急冷しそれ以降は徐冷
しなければいけない。It must be rapidly cooled to about 500 degrees Celsius above the grilling temperature, and then slowly cooled.
上記焼憔においては従来は冷却室内両側に冷却水供給チ
ューブあるいはさらに冷却水供給フィンチューブを設は
冷却水を循環させて行っていた。Conventionally, in the above-mentioned burning process, cooling water supply tubes or further cooling water supply fin tubes were provided on both sides of the cooling chamber to circulate the cooling water.
〔発明が解決１−ようとする課題〕 伝熱ｔＱ（Ｋｃａｌ／、ｈ）は下記式で表わされる。[The invention solves the problem 1--The problem that the invention attempts to solve] Heat transfer tQ (Kcal/, h) is expressed by the following formula.
Ｑ ＝ ＫＡ −−−−−−−（１１（上記式
？でおいて・Ｋは定数（Ｋｃａｌ ／ｈ ） 。Q = KA ----------(11 (In the above formula? K is a constant (Kcal/h).
Ａは面積（イ）である。）
従来の上記冷却室内に冷却水供給チューブを設は冷却水
を循環させる方法は例えば２０℃の− 水が３０℃に上
昇させられる程度のことでちり−いわゆる定数Ｋが小さ
く十分な冷却効果を得ることがで六ず、したがって冷却
効果を高めるためには面積Ａでカバーする必要があった
。A is area (a). ) The conventional method of circulating cooling water by installing a cooling water supply tube inside the cooling chamber is, for example, 20°C - the water is raised to 30°C, and the so-called constant K is small, so that sufficient cooling effect can be achieved. Therefore, in order to enhance the cooling effect, it was necessary to cover the area with area A.
そのためには必然的に冷却室を大きくする必要があった
。For this purpose, it was necessary to make the cooling room larger.
そこで、従来、上記面積Ａを確保するため。Therefore, conventionally, in order to secure the above area A.
チューブにフィンをつけることも行われた。Fins were also added to the tubes.
しかしながら、その場合には攪拌ファンに対してフィン
が抵抗体となり、冷気循環にバラツキが生じる欠点があ
った。However, in this case, the fins act as a resistor against the stirring fan, resulting in a drawback that variations occur in the circulation of cool air.
本発明は上記課題を解決することを目的とするもので一
定数にの大きい方法、すなわち、上記冷却水の約１０倍
の定数か有する沸騰による気化潜熱を利用し１面積が小
さくても所要の冷却効果が得られるように構成したもの
で、冷却室を大きくする必要もなく、理論上は約１０分
の１でよく、経済的であることを特徴とするものである
。The present invention aims to solve the above-mentioned problems, and uses a method that uses the latent heat of vaporization due to boiling, which has a constant of about 10 times the above-mentioned cooling water, to achieve the required amount even if one area is small. It is constructed so that a cooling effect can be obtained, and there is no need to enlarge the cooling chamber.Theoretically, it can be reduced to about one-tenth of the size, and is characterized by being economical.
本発明は上記目的を達成するため、冷却室内に上端を外
部に開口した多数のチューブが設けられてなり、上記各
チューブに沸騰間近かた温湯を供給しておき、加熱され
た鋼の装入により沸騰させ一気化潜熱により鋼を冷却す
るものである。In order to achieve the above-mentioned object, the present invention is provided with a large number of tubes whose upper ends are open to the outside in a cooling chamber, hot water near boiling is supplied to each tube, and heated steel is charged into the cooling chamber. The steel is boiled and cooled by the latent heat of vaporization.
本発明では加熱室１１）で高温に加熱された鋼１８）の
装入に先立ち、冷却室（２）内のチューブＣ３１に沸騰
間近かな温湯が供給されている。そして冷却室（２）に
加熱された鋼（８）が装入される。In the present invention, before charging the steel 18) heated to a high temperature in the heating chamber 11), hot water that is close to boiling is supplied to the tube C31 in the cooling chamber (2). The heated steel (8) is then charged into the cooling chamber (2).
その結果、冷却室１２＋内の温度が上昇させられ。As a result, the temperature within the cooling chamber 12+ is increased.
同時にチューブ（３）が加熱され、該チューブ（３）内
の温湯が沸騰し、急速に蒸発が始まり、その気化潜熱に
よりチューブ（３）の外周温度が急速に低下し、その周
囲空気が冷やされ、その冷い空気が攪拌ファン（５）に
より室内の鋼（８）周囲を循環し。At the same time, the tube (3) is heated, the hot water inside the tube (3) boils, and evaporation begins rapidly.The outer temperature of the tube (3) rapidly decreases due to the latent heat of vaporization, and the surrounding air is cooled. The cool air is circulated around the steel (8) in the room by a stirring fan (5).
その継続により冷却が行われる本のである。This is a book that cools down through its continuation.
そして、別の検知装置により鋼（８）の温度が５００°
Ｃ以下（５〜１０分後）となったことが確昭されたら、
攪拌ファン（５）を止めれば、徐冷状態となり、その後
はゆっくり冷却され、最終的に歪の少い熱処理作業が完
了するものである。Then, another detection device detected that the temperature of steel (8) was 500°.
Once it is confirmed that the temperature is below C (after 5 to 10 minutes),
When the stirring fan (5) is stopped, a slow cooling state is established, and thereafter, the cooling is performed slowly, and finally the heat treatment operation with little distortion is completed.
上記のごとく１本発明は従来の冷却水の約１０倍の定数
を有する沸鳴による気化潜熱を利用するため、冷却室を
大きくする必要がなく。As described above, the present invention utilizes the latent heat of vaporization due to boiling, which has a constant about 10 times that of conventional cooling water, so there is no need to enlarge the cooling chamber.
コンパクトに構成しても十分な効果が得られるものであ
る。Even with a compact configuration, sufficient effects can be obtained.
以下に本発明の一実施例を図面について詳細に説明する
。An embodiment of the present invention will be described in detail below with reference to the drawings.
本発明の実施に利用される冷却室（２）は例えば第１１
図示のごとく、加熱室ｆ＋ｌＩｃ連続させて設けられる
。The cooling chamber (2) used for carrying out the present invention is, for example, the 11th cooling chamber (2).
As shown in the figure, the heating chambers f+lIc are successively provided.
そして、その内部には上端を外部に開口した多数のチュ
ーブ〔３）が設けられる。A large number of tubes [3] whose upper ends are open to the outside are provided inside the tube.
本発明では上記多数のチューブ（３）に沸騰間近かな温
湯が供給される。In the present invention, hot water that is close to boiling is supplied to the plurality of tubes (3).
図面実施例の場合、上記多数のチューブ（３）間を外部
設けた連通パイプ（４）で連結し、全部のチューブ（３
）に温湯の供給が容易であるように構成されている。In the case of the embodiment shown in the drawings, the large number of tubes (3) are connected by an externally provided communication pipe (4), and all the tubes (3) are
) is constructed so that hot water can be easily supplied.
上記連通パイプ（４）を内部に設けることも考えられる
が、内部に設けた場合には攪拌ファン（５）に対する抵
抗体となり、冷気循環にバラツキが生じる可能性がある
。It is conceivable to provide the communication pipe (4) inside, but if it is provided inside, it will act as a resistance to the stirring fan (5) and may cause variations in cold air circulation.
図中（６）は温湯供給パイプ、（７）はオーバーフロー
、ｒ８１は冷却する鋼であり、治具により積重ねられて
いる。In the figure, (6) is a hot water supply pipe, (7) is an overflow, and r81 is a cooling steel, which are stacked using a jig.
才３図はチューブ（３）をＵ字状に構成して内部に配置
した例であり、連通パイプ（４）による連結が容易とな
るものである。Figure 3 shows an example in which the tube (3) is configured in a U-shape and placed inside, making it easy to connect with the communicating pipe (4).
上記構成の冷却室（２）により本発明は実施されるもの
で１本発明は沸騰による気化潜熱を利用して急冷するも
のであり、攪拌ファン（５）の停止等の制御と合せて理
想的な鋼の冷却を可能とするものである。The present invention is carried out by the cooling chamber (2) having the above configuration.1 The present invention rapidly cools the room by utilizing the latent heat of vaporization caused by boiling, and is ideal when combined with control such as stopping the stirring fan (5). This makes it possible to cool steel.
本発明ＩＣよれば一コンパクトな冷却室で急速均一な冷
却効果を得ることができ、経済的である効果が得られる
ものである。According to the IC of the present invention, a rapid and uniform cooling effect can be obtained in a compact cooling chamber, and an economical effect can be obtained.
図面は本発明の実施に利用される装置の一例を示し、牙
１図はその全体図、矛２図は冷却室の縦断面図、牙３図
はチューブ配置の一例な示す平面図である。
（１）・・・加熱室、（２）・・・冷却室、（３）・・
・チューブ、（４）・・・連通パイプ、（５）・・・攪
拌ファン。
（６）・・・温湯供給パイプ、（７）・・・オーバーフ
ロー。The drawings show an example of the apparatus used to carry out the present invention, with Figure 1 being an overall view thereof, Figure 2 being a longitudinal sectional view of a cooling chamber, and Figure 3 being a plan view showing an example of tube arrangement. (1)... Heating chamber, (2)... Cooling chamber, (3)...
・Tube, (4)...Communication pipe, (5)...Stirring fan. (6)...Hot water supply pipe, (7)...Overflow.
Claims (1)
られてなり、上記各チューブに沸騰間近かな温湯を供給
しておき、加熱された鋼の装入により沸騰させ、気化潜
熱により鋼を冷却することを特徴とする鋼の冷却方法。A large number of tubes with their upper ends open to the outside are installed in the cooling chamber. Hot water that is close to boiling is supplied to each of the tubes, heated steel is charged into the tube to bring it to a boil, and the steel is cooled by latent heat of vaporization. A method for cooling steel, characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63082771A JP2829609B2 (en) | 1988-04-04 | 1988-04-04 | Steel cooling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63082771A JP2829609B2 (en) | 1988-04-04 | 1988-04-04 | Steel cooling method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01255619A true JPH01255619A (en) | 1989-10-12 |
| JP2829609B2 JP2829609B2 (en) | 1998-11-25 |
Family
ID=13783697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63082771A Expired - Lifetime JP2829609B2 (en) | 1988-04-04 | 1988-04-04 | Steel cooling method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2829609B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117004797A (en) * | 2023-09-21 | 2023-11-07 | 中科卓异环境科技(东莞)有限公司 | Steel normalizing equipment and steel normalizing method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51125615A (en) * | 1975-03-19 | 1976-11-02 | Nisshin Steel Co Ltd | A cooling arrangement for rolls, etc. |
| JPS5389859A (en) * | 1977-01-14 | 1978-08-08 | Hi Draw Machinery Ltd | Drawn wire cooling and said device |
| JPS5416921A (en) * | 1977-06-02 | 1979-02-07 | Ampex | Camera image pickup tube circuit for automatically suppressing excessive highlight responsive to occurrence of excessive highlight |
| JPH01136158U (en) * | 1988-03-02 | 1989-09-18 |
-
1988
- 1988-04-04 JP JP63082771A patent/JP2829609B2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS51125615A (en) * | 1975-03-19 | 1976-11-02 | Nisshin Steel Co Ltd | A cooling arrangement for rolls, etc. |
| JPS5389859A (en) * | 1977-01-14 | 1978-08-08 | Hi Draw Machinery Ltd | Drawn wire cooling and said device |
| JPS5416921A (en) * | 1977-06-02 | 1979-02-07 | Ampex | Camera image pickup tube circuit for automatically suppressing excessive highlight responsive to occurrence of excessive highlight |
| JPH01136158U (en) * | 1988-03-02 | 1989-09-18 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117004797A (en) * | 2023-09-21 | 2023-11-07 | 中科卓异环境科技(东莞)有限公司 | Steel normalizing equipment and steel normalizing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2829609B2 (en) | 1998-11-25 |
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