JPS62214855A - Production of thin strip - Google Patents
Production of thin stripInfo
- Publication number
- JPS62214855A JPS62214855A JP5501386A JP5501386A JPS62214855A JP S62214855 A JPS62214855 A JP S62214855A JP 5501386 A JP5501386 A JP 5501386A JP 5501386 A JP5501386 A JP 5501386A JP S62214855 A JPS62214855 A JP S62214855A
- Authority
- JP
- Japan
- Prior art keywords
- cooling drum
- molten metal
- ribbon
- peripheral surface
- metal
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 238000001816 cooling Methods 0.000 claims abstract description 68
- 229910052751 metal Inorganic materials 0.000 claims abstract description 46
- 239000002184 metal Substances 0.000 claims abstract description 46
- 230000002093 peripheral effect Effects 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims description 10
- 229910052755 nonmetal Inorganic materials 0.000 claims description 9
- 238000007712 rapid solidification Methods 0.000 claims description 2
- 230000008646 thermal stress Effects 0.000 abstract description 4
- 230000005489 elastic deformation Effects 0.000 abstract description 3
- 230000008023 solidification Effects 0.000 abstract 2
- 238000007711 solidification Methods 0.000 abstract 2
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000009835 boiling Methods 0.000 description 4
- 238000005266 casting Methods 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000002826 coolant Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052752 metalloid Inorganic materials 0.000 description 2
- 150000002738 metalloids Chemical class 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0637—Accessories therefor
- B22D11/0665—Accessories therefor for treating the casting surfaces, e.g. calibrating, cleaning, dressing, preheating
- B22D11/0671—Accessories therefor for treating the casting surfaces, e.g. calibrating, cleaning, dressing, preheating for heating or drying
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
この発明は、金属または非金属の溶湯を回転する冷却ド
ラム上に供給し、前記冷却ドラムにより急冷して凝固さ
せ、前記金属または前記非金属の薄帯を連続的に製造す
るだめの方法に関するものである。Detailed Description of the Invention [Technical Field of the Invention] The present invention provides a method of supplying a molten metal or non-metal onto a rotating cooling drum, rapidly cooling and solidifying the metal or non-metal, and solidifying the metal or non-metal. This invention relates to a method for continuously manufacturing ribbons.
近来、溶鋼のような溶融金属を急冷することによって製
造される非晶質または極微細結晶質の薄帯が、その電磁
気的特性のよいことがら注目されている。BACKGROUND ART Recently, amorphous or ultrafine crystalline ribbons produced by rapidly cooling molten metals such as molten steel have attracted attention because of their good electromagnetic properties.
第２図は、このような薄帯を製造するための従来の装置
の一例を示す概略垂直断面図である。第２図に示すよう
に、この装置は、所定の周速度で矢印に示す方向に回転
する、軸線が水平な冷却ドラム１と、冷却ドラム１に近
接して設けられた、冷却ドラム１の外周表面の一部と共
働して溶湯溜３を形成するだめの耐火物製の堰２と、冷
却ドラム１の上面および堰２と反対側のドラム面に、冷
却ドラム１に近接し且つその軸線と平行に設けられた、
冷却ドラム１の回転方向と反対方向に回転する小径の押
さえロール４，４とからなっている。FIG. 2 is a schematic vertical sectional view showing an example of a conventional apparatus for manufacturing such a ribbon. As shown in FIG. 2, this device consists of a cooling drum 1 whose axis is horizontal, which rotates at a predetermined circumferential speed in the direction shown by the arrow, and an outer periphery of the cooling drum 1, which is provided close to the cooling drum 1. A weir 2 made of a refractory material that cooperates with a part of the surface to form a molten metal reservoir 3, and a weir 2 that is close to the cooling drum 1 and located on its axis on the upper surface of the cooling drum 1 and the drum surface opposite to the weir 2. installed parallel to
It consists of small-diameter presser rolls 4, 4 that rotate in the opposite direction to the rotational direction of the cooling drum 1.
冷却ドラム１を所定の周速度で矢印に示す方向に回転さ
せながら、溶湯溜３内に溶湯５を供給すると、溶湯５は
、冷却ドラム１の外周表面上に付着し、その回転に伴っ
て所定の厚さで溶湯溜３内から取出され°、押さえロー
ル４，４によりその外周表面が押さえられながら、冷却
ドラム１により急冷されて薄帯６となシ、冷却ドラムエ
から剥離され、図示しない巻取機によって巻き取られる
。When the molten metal 5 is supplied into the molten metal reservoir 3 while rotating the cooling drum 1 at a predetermined circumferential speed in the direction shown by the arrow, the molten metal 5 adheres to the outer peripheral surface of the cooling drum 1 and moves at a predetermined rate as it rotates. The molten metal is taken out from the sump 3 with a thickness of It is wound up by a take-up machine.
しかしながら、上述した方法で製造された薄帯６には、
熱変形が発生する問題がある。このような熱変形が発生
する原因は、冷却ドラム１０外周表面上に付着した溶湯
５が急冷凝固し、薄帯が冷却ドラム１により冷却される
ときに、その厚さ方向および長さ方向に大きな温度勾配
が発生し、このときの熱応力によって薄帯６に塑性変形
が生ずることにある。即ち、薄帯６の厚さ方向の温度勾
配が大きいと、薄帯か冷却ドラム１から離れるように変
形し、冷却ドラム１の外周表面と薄帯６との密着力が低
下して、薄帯６が冷却ドラム１の外周表面から剥離しゃ
すくなシ、且つ、薄帯６の長さ方向の温度勾配が大きい
と、収縮して薄帯６に座屈変形が生じやすくなる。However, the ribbon 6 manufactured by the method described above has
There is a problem that thermal deformation occurs. The reason why such thermal deformation occurs is that when the molten metal 5 adhering to the outer peripheral surface of the cooling drum 10 is rapidly solidified and the ribbon is cooled by the cooling drum 1, a large amount is generated in the thickness direction and the length direction. A temperature gradient occurs, and the thermal stress generated at this time causes plastic deformation in the ribbon 6. That is, if the temperature gradient in the thickness direction of the ribbon 6 is large, the ribbon deforms away from the cooling drum 1, and the adhesion between the outer peripheral surface of the cooling drum 1 and the ribbon 6 decreases, causing the ribbon to deform. 6 is difficult to peel from the outer circumferential surface of the cooling drum 1, and if the temperature gradient in the longitudinal direction of the ribbon 6 is large, the ribbon 6 tends to contract and buckle.
このような薄帯６に生ずる熱変形は、冷却ドラム１の上
面および側面に設けられた押さえロール４．４によって
も党全に防止することはできず、かえって、押さえロー
ル４，４により変形がたたみ込まれ、極めて悪いラップ
状のしわ部分をもった薄帯となる。Such thermal deformation that occurs in the ribbon 6 cannot be completely prevented even by the press rolls 4.4 provided on the top and side surfaces of the cooling drum 1; on the contrary, the deformation is caused by the press rolls 4, 4. It is folded into a ribbon with extremely bad wrap-like wrinkles.
従って、この発明の目的は、金属または非金属の溶湯を
、所定の周速で回転する冷却ドラム上に供給し、前記冷
却ドラムにより急冷して凝固させることにより、前記金
属または非金属の薄帯を連続的に製造するに際し、前述
したような冷却ドラム上での大きな温度勾配に起因する
問題の生ずることがなく、形状の良好な薄帯を安定して
連続的に製造するための方法を提供することにある。Therefore, an object of the present invention is to supply a molten metal or non-metal onto a cooling drum rotating at a predetermined circumferential speed, and rapidly cool and solidify the metal or non-metal thin metal by the cooling drum. Provided is a method for stably and continuously producing ribbons with good shapes without causing problems caused by large temperature gradients on the cooling drum as described above. It's about doing.
本発明者等は、上述した問題を解決し、冷却ドラム上で
の大きな温度勾配に起因する問題の生ずることがなく、
形状の良好な薄帯を安定して連続的に製造することがで
きる方法を開発すべく鋭意研究を重ねた。The inventors of the present invention have solved the above-mentioned problem, and the problem caused by the large temperature gradient on the cooling drum does not occur.
We conducted extensive research to develop a method that can stably and continuously produce ribbons with good shapes.
その結果、薄帯に生ずる温度勾配を緩和して、発生する
熱応力を弾性変形領域内にとどめるようにすれば、形状
の良好な薄帯を安定して連続的に製造し得ることを知見
した。As a result, they found that by relaxing the temperature gradient that occurs in the ribbon and keeping the generated thermal stress within the elastic deformation region, it is possible to stably and continuously manufacture ribbons with good shapes. .
この発明は上述した知見に基いてなされたものであって
、軸線が水平な冷却ドラムを所定の周速度で回転させ、
回転中の前記冷却ドラムの外周表面上に金属または非金
属の溶湯を供給してこれを急冷凝固させ、かくして、前
記冷却ドラムにより前記金属または前記非金属の薄帯を
連続的に製造する薄帯の製造方法において、少なくとも
、前記冷却ドラムの外周表面上に溶湯を供給する直前に
、前記冷却ドラムの外周表面を加熱して、前記冷却ドラ
ムの外周表面上に供給された前記溶湯の急冷凝固時に生
ずる温度勾配を緩和することに特徴を有するものである
。This invention was made based on the above-mentioned knowledge, and consists of rotating a cooling drum with a horizontal axis at a predetermined circumferential speed,
A molten metal or non-metal is supplied onto the outer circumferential surface of the rotating cooling drum to rapidly solidify it, and thus the metal or non-metal ribbon is continuously produced by the cooling drum. In the manufacturing method, at least immediately before supplying the molten metal onto the outer peripheral surface of the cooling drum, the outer peripheral surface of the cooling drum is heated, and the molten metal supplied onto the outer peripheral surface of the cooling drum is rapidly solidified. It is characterized by alleviating the temperature gradient that occurs.
次に、この発明を図面を参照しながら説明する。 Next, the present invention will be explained with reference to the drawings.
第１図は、この発明の方法を実施するための装置の一例
を示す概略垂直断面図である。第１図に示すように、所
定の周速で矢印に示す方向に回転する、軸線が水平な冷
却ドラム１の一側の近傍には、冷却ドラム１に近接して
、冷却ドラム１の外周表面の一部と共働して溶湯溜３を
形成するための耐火物製の堰２が設けられておシ、冷却
ドラム１の上面および堰２と反対側の側面には、小径の
押さえロール４，４が設けられていることは、従来と同
様である。冷却ドラム１の、堰２側の側面下方には、冷
却ドラム１の外周表面を加熱するだめのバーナー７が、
冷却ドラム１の幅方向にわたって設けられている。８は
バーナー７を覆うカバーである。FIG. 1 is a schematic vertical sectional view showing an example of an apparatus for carrying out the method of the present invention. As shown in FIG. 1, in the vicinity of one side of the cooling drum 1, which rotates at a predetermined circumferential speed in the direction shown by the arrow and whose axis is horizontal, the outer circumferential surface of the cooling drum 1 is A weir 2 made of refractory material is provided to form a molten metal reservoir 3 in cooperation with a part of the cooling drum 1, and a small-diameter presser roll 4 is provided on the upper surface of the cooling drum 1 and the side opposite to the weir 2. , 4 are provided as in the conventional case. A burner 7 for heating the outer peripheral surface of the cooling drum 1 is located below the side surface of the cooling drum 1 on the weir 2 side.
It is provided across the width direction of the cooling drum 1. 8 is a cover that covers the burner 7.
この発明においては、塩２内に溶湯を注入して、冷却ド
ラム１の外周表面上に溶湯を供給する直前に、その内部
に水その他の冷却媒体が循環している回転する冷却ドラ
ム１の外周表面を、バーナー７によって５００〜７００
℃の温度に加熱する。In this invention, immediately before injecting the molten metal into the salt 2 and supplying the molten metal onto the outer circumferential surface of the cooling drum 1, the outer circumferential surface of the rotating cooling drum 1, in which water or other cooling medium is circulated. Burner 7 burns the surface to 500-700
Heat to a temperature of °C.
次いで、バーナー７による加熱を止めた後、堰２内に溶
湯５を注入し、冷却ドラム１の外周弐面上に溶湯５を供
給する。この結果、溶湯５が急冷凝固するときの温度勾
配は緩和され、急冷凝固時に発生する熱応力を弾性変形
の範囲内にとどめることができ、従って、形状の良好な
薄帯６が得られる。Next, after the heating by the burner 7 is stopped, the molten metal 5 is injected into the weir 2, and the molten metal 5 is supplied onto the outer peripheral surface of the cooling drum 1. As a result, the temperature gradient when the molten metal 5 is rapidly solidified is relaxed, and the thermal stress generated during the rapid solidification can be kept within the range of elastic deformation, so that a ribbon 6 with a good shape can be obtained.
なお、上述したバーナー７による冷却ドラム１の加熱は
、冷却ドラム１に対する溶湯の供給の間、連続的に行な
ってもよい。また、冷却ドラム１に対する加熱は、バー
ナーのほか、電気ヒーター等によって行なってもよい。Note that the heating of the cooling drum 1 by the burner 7 described above may be performed continuously while the molten metal is being supplied to the cooling drum 1. Further, the cooling drum 1 may be heated by an electric heater or the like in addition to a burner.
冷却ドラム１の材質は、その表面温度を高くとれるよう
な熱伝導率の小さい、例えば、普通鋼、ステンレス鋼、
アルミナ、シリカ等を使用する。The material of the cooling drum 1 is a material with low thermal conductivity that can maintain a high surface temperature, such as ordinary steel, stainless steel,
Use alumina, silica, etc.
冷却ドラム１内を循環させる冷却媒体として、高沸点熱
媒体を使用すれば、冷却ドラム１から排出された高沸点
熱媒体を熱交換することにより、その熱をガス状で回収
することができ、回収された高温のガスを、冷却ドラム
１の加熱用熱源（例えば燃焼用空気）として利用するこ
とができる。If a high boiling point heat medium is used as the cooling medium circulated within the cooling drum 1, the heat can be recovered in gaseous form by heat exchange with the high boiling point heat medium discharged from the cooling drum 1. The recovered high-temperature gas can be used as a heat source for heating the cooling drum 1 (for example, combustion air).
上述のように、この発明の方法により、鋳造開始前に冷
却ドラム１の表面を予熱し、前記表面が薄帯の熱変形を
防止し得る温度になった後に鋳造を開始することにより
、冷却ドラム１に最初の溶湯が供給されて薄帯の製造が
始まる鋳造の初期に生じゃすい薄帯の熱変形を適確に防
止することができる。As described above, according to the method of the present invention, the surface of the cooling drum 1 is preheated before the start of casting, and the casting is started after the surface reaches a temperature that can prevent thermal deformation of the ribbon. It is possible to appropriately prevent thermal deformation of the green ribbon at the early stage of casting when the first molten metal is supplied to Step 1 and the manufacture of the ribbon begins.
また、溶湯および薄帯からの冷却ドラム１への入熱と、
冷却ドラム内部の冷却条件によっては、溶湯と接触する
直前の冷却ドラムの温度が熱変形防止のための温度以下
になる場合もあるので、このような場合には、冷却ドラ
ム１に対する加熱を、鋳造開始前のみでなく、鋳造中も
行なう必要がある。In addition, heat input to the cooling drum 1 from the molten metal and the ribbon,
Depending on the cooling conditions inside the cooling drum, the temperature of the cooling drum just before it comes into contact with the molten metal may be below the temperature required to prevent thermal deformation. This must be done not only before starting, but also during casting.
次に、この発明を実施例に基いて説明する。 Next, the present invention will be explained based on examples.
直径ｓｏｏｍ、幅６００鵡のステンレス鋼製の冷却ドラ
ムを、回転数５０ｒｐｍで回転させ、温度１５７０℃の
溶鋼（普通鋼）を供給し、厚さ０．２５賜、幅５００ｍ
の薄帯を製造した。A stainless steel cooling drum with a diameter of 600 m and a width of 600 m is rotated at a speed of 50 rpm, and molten steel (ordinary steel) at a temperature of 1570°C is supplied.
A thin ribbon was manufactured.
冷却ドラムの内部には、高沸点熱媒体として、沸点が２
００℃のアルキルジフェニールを循環すせた。Inside the cooling drum, there is a high-boiling heat medium with a boiling point of 2.
Alkyldiphenyl at 00°C was circulated.
冷却ドラムに溶鋼を供給する前に、燃料としてＣガスを
使用したバーナーにより、冷却ドラムの外周表面を６０
０℃に加熱した。Before supplying molten steel to the cooling drum, a burner using C gas as fuel burns the outer peripheral surface of the cooling drum to 60°C.
Heated to 0°C.
この結果、製造された薄帯に熱変形が生ずることはなく
、その形状は良好であった。なお、バーナーによって加
熱しない場合の、溶湯の接触前における冷却ドラムの表
面温度は２５０℃であシ、バーナーによって加熱しない
場合には、薄帯の熱変形を防止することができなかった
。As a result, no thermal deformation occurred in the manufactured ribbon, and its shape was good. Note that the surface temperature of the cooling drum before contact with the molten metal was 250° C. when not heated by a burner, and thermal deformation of the ribbon could not be prevented when not heated by a burner.
この発明は、上述した実施例のように、冷却ドラムの外
周表面上に、溶鋼のような金属の溶湯を供給して金属の
薄帯を製造する場合のほか、例えば溶融セラミックスの
ような非金属または半金属の溶湯を供給して、非金属ま
たは半金属の薄帯を製造する場合にも適用することがで
きる。The present invention is applicable not only to the case where a molten metal such as molten steel is supplied onto the outer circumferential surface of the cooling drum to produce a thin metal ribbon as in the above-described embodiment, but also to the case where a thin metal ribbon such as a non-metallic ribbon such as molten ceramics is manufactured. Alternatively, it can also be applied to the case where a molten metal of a metalloid is supplied to produce a nonmetal or metalloid ribbon.
以上述べたように、この発明によれば、溶湯を回転する
冷却ドラム上に供給し、前記冷却ドラムにより急冷して
凝固させ、薄帯を製造するに当り、熱変形の生ずること
がない形状の良好な薄帯を安定して連続的に製造するこ
とができる工業上優れた効果がもたらされる。As described above, according to the present invention, a molten metal is supplied onto a rotating cooling drum, and is rapidly cooled and solidified by the cooling drum to produce a ribbon. This provides an industrially excellent effect in that a good ribbon can be stably and continuously produced.
第１図は、この発明の方法を実施するための装置の一例
を示す概略垂直断面図、第２図は、従来の薄帯を製造す
るための装置の一例を示す概略垂直断面図である。図面
において、
１・・・冷却ドラム ２・・・堰
３・・・溶湯溜 ４・・・押さえロール５・・
・溶湯 ６・・・薄帯７・・・バーｆ−８・
・・カバー。FIG. 1 is a schematic vertical sectional view showing an example of an apparatus for carrying out the method of the present invention, and FIG. 2 is a schematic vertical sectional view showing an example of a conventional apparatus for manufacturing a ribbon. In the drawings, 1... Cooling drum 2... Weir 3... Molten metal sump 4... Presser roll 5...
・Molten metal 6...Thin strip 7...Bar f-8・
··cover.
Claims (1)
中の前記冷却ドラムの外周表面上に金属または非金属の
溶湯を供給してこれを急冷凝固させ、かくして、前記冷
却ドラムにより前記金属または前記非金属の薄帯を連続
的に製造する薄帯の製造方法において、 少なくとも、前記冷却ドラムの外周表面上に溶湯を供給
する直前に、前記冷却ドラムの外周表面を加熱して、前
記冷却ドラムの外周表面上に供給された前記溶湯の急冷
凝固時に生ずる温度勾配を緩和することを特徴とする薄
帯の製造方法。[Claims] A cooling drum whose axis is horizontal is rotated at a predetermined circumferential speed, and a molten metal or nonmetal is supplied onto the outer peripheral surface of the rotating cooling drum to rapidly solidify it, and thus, In the method for manufacturing a thin ribbon of the metal or the non-metallic metal continuously using the cooling drum, at least immediately before supplying the molten metal onto the outer circumferential surface of the cooling drum, the outer circumferential surface of the cooling drum is A method for producing a ribbon, the method comprising heating to alleviate a temperature gradient that occurs during rapid solidification of the molten metal supplied onto the outer peripheral surface of the cooling drum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5501386A JPS62214855A (en) | 1986-03-14 | 1986-03-14 | Production of thin strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5501386A JPS62214855A (en) | 1986-03-14 | 1986-03-14 | Production of thin strip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62214855A true JPS62214855A (en) | 1987-09-21 |
Family
ID=12986775
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5501386A Pending JPS62214855A (en) | 1986-03-14 | 1986-03-14 | Production of thin strip |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62214855A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0490872A2 (en) * | 1988-04-08 | 1992-06-17 | Reynolds Metals Company | Apparatus for and process of direct casting of metal strip |
| WO1999012677A1 (en) * | 1997-09-10 | 1999-03-18 | Danieli & C. Officine Meccaniche S.P.A. | Continuous casting device with rollers and casting method with rollers |
-
1986
- 1986-03-14 JP JP5501386A patent/JPS62214855A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0490872A2 (en) * | 1988-04-08 | 1992-06-17 | Reynolds Metals Company | Apparatus for and process of direct casting of metal strip |
| WO1999012677A1 (en) * | 1997-09-10 | 1999-03-18 | Danieli & C. Officine Meccaniche S.P.A. | Continuous casting device with rollers and casting method with rollers |
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