JPH07121440B2 - Twin roll type continuous casting machine - Google Patents
Twin roll type continuous casting machineInfo
- Publication number
- JPH07121440B2 JPH07121440B2 JP62292659A JP29265987A JPH07121440B2 JP H07121440 B2 JPH07121440 B2 JP H07121440B2 JP 62292659 A JP62292659 A JP 62292659A JP 29265987 A JP29265987 A JP 29265987A JP H07121440 B2 JPH07121440 B2 JP H07121440B2
- Authority
- JP
- Japan
- Prior art keywords
- cooling
- roll
- sleeve
- continuous casting
- type continuous
- 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 - Fee Related
Links
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
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/124—Accessories for subsequent treating or working cast stock in situ for cooling
-
- 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
- B22D11/0648—Casting surfaces
- B22D11/0651—Casting wheels
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は双ロール式連続鋳造装置に係り、特に幅方向の
板厚差の少ない鋳片を得るに好適な双ロール式連続鋳造
装置に関する。The present invention relates to a twin-roll type continuous casting apparatus, and more particularly to a twin-roll type continuous casting apparatus suitable for obtaining a slab with a small plate thickness difference in the width direction.
従来の双ロール式連続鋳造装置は、第４図に示すごと
く、向かい合つて水平におかれそれぞれの軸のまわりに
回転する２本の冷却用ロールｃの間に溶融金属ａが注入
され、該溶融金属ａが前記冷却用ロールｃによつて冷却
凝固させられつつ前記冷却用ロールの間隙から該間隙を
板厚とし、冷却ロールが溶融金属と接する部分のロール
母線長さを板幅とする板状の鋳片として引き抜かれるも
のであり、前記冷却用ロールｃは外周にスリーブが装着
され、スリーブの内面が水冷されている。As shown in FIG. 4, the conventional twin-roll type continuous casting apparatus is one in which molten metal a is injected between two cooling rolls c which face each other horizontally and rotate around their respective axes. A plate in which the molten metal a is cooled and solidified by the cooling roll c and has a plate thickness from the gap of the cooling roll, and a roll busbar length of a portion where the cooling roll contacts the molten metal is a plate width. The cooling roll c has a sleeve mounted on the outer periphery thereof, and the inner surface of the sleeve is water-cooled.
上述の双ロール式連続鋳造装置においては、製品の板厚
が板幅方向の位置によつて異なる、板クラウンという現
象を生ずる問題がある。板クラウンの発生原因は、第６
図に示す冷却用ロールの板幅方向、板厚方向の温度差に
よる冷却用ロールの外径の変化が原因であるロールクラ
ウンが主なものであることが計算および実測により明ら
かにされている。In the twin roll type continuous casting apparatus described above, there is a problem that a plate crown phenomenon occurs in which the plate thickness of the product differs depending on the position in the plate width direction. The cause of the plate crown is the sixth
It has been clarified by calculation and actual measurement that the roll crown mainly caused by the change of the outer diameter of the cooling roll due to the temperature difference in the plate width direction and plate thickness direction of the cooling roll shown in the figure is the main cause.
この問題に対処するために種々の板クラウン低減技術が
考案されている。特開昭60−第33857号公報に記載の発
明は、冷却用ロールが外周に負のクラウンを有しかつ内
周に溝を設けたスリーブを備え、該スリーブが冷却液の
圧力で膨張されることにより、ロールクラウンを制御し
ている。特開昭61−第38745号公報記載の発明は、冷却
用ロールを水冷式ドラムとし、ドラム内の冷却水を加圧
して該水冷式ドラムの形状を制御している。更に特開昭
60−第27446号公報記載の発明は、冷却用ロールのスリ
ーブに冷却水流路がらせん状に設けられており、該冷却
用ロールの本体胴部両端に同心円状に中央に近づくほど
挟幅になるピストン摺動空間が設けられており、該ピス
トン摺動空間に環状のテーパーピストンが摺動自在に嵌
合されている冷却用ロールを備え、該テーパーピストン
を油圧により冷却用ロール軸方向に移動させ、楔作用に
より冷却用ロール本体の外周を変形することによりロー
ルクラウンを適宜変更できるようにしている。Various plate crown reduction techniques have been devised to address this problem. In the invention described in JP-A-60-33857, a cooling roll has a sleeve having a negative crown on the outer circumference and a groove provided on the inner circumference, and the sleeve is expanded by the pressure of the cooling liquid. Therefore, the roll crown is controlled. In the invention described in JP-A-61-38745, the cooling roll is a water-cooled drum, and the shape of the water-cooled drum is controlled by pressurizing the cooling water in the drum. Furthermore,
In the invention described in 60-27446, a cooling water passage is spirally provided in the sleeve of the cooling roll, and the width becomes narrower toward the center in a concentric manner at both ends of the main body of the cooling roll. A piston sliding space is provided, and a cooling roll in which an annular tapered piston is slidably fitted in the piston sliding space is provided, and the tapered piston is moved by hydraulic pressure in the cooling roll axial direction. The roll crown can be appropriately changed by deforming the outer circumference of the cooling roll main body by the wedge action.
連続鋳造においては冷却用ロールとスリーブには多大な
入熱による大きな熱応力が加わり、またスリーブ冷却の
ために大きい冷却液流量が必要であるが、特開昭60−第
33857号公報および特開昭61−第38745号公報に記載され
た発明においては、 イ．クラウン制御に冷却用液体の圧力を用いるため冷却
用液体の圧力ほ変化により冷却特性が変化して安定した
鋳造の維持が難しい。In continuous casting, a large heat input is applied to the cooling roll and the sleeve due to a large amount of heat input, and a large cooling liquid flow rate is required for cooling the sleeve.
In the inventions described in JP-A-33857 and JP-A-61-38745, a. Since the pressure of the cooling liquid is used for crown control, it is difficult to maintain stable casting because the cooling characteristics change due to changes in the pressure of the cooling liquid.
ロ．冷却用ロールへの多大な入熱を冷却するため多量の
冷却液を流す必要があり、同時にクラウン制御に必要な
液圧変化に耐える構造にすることは容易ではない。B. It is necessary to flow a large amount of cooling liquid in order to cool a large amount of heat input to the cooling roll, and at the same time, it is not easy to make the structure resistant to the change in hydraulic pressure necessary for crown control.
ハ．高圧液体を多量に供給しなければならず、そのため
のエネルギ消費量が大きい。C. A large amount of high-pressure liquid must be supplied, and energy consumption for that is large.
等の問題点があつた。There were problems such as.
これらの問題点を解決するものとして、特開昭60−第27
446号公報に記載の発明が提案されているが、この発明
においては、 1.ロールクラウンの制御に際し、スリーブの温度分布お
よび該温度分布に起因する変形の防止が考慮されておら
ず、クラウン制御量が大となり、また熱応力上も制御が
難しくなる。As a means for solving these problems, JP-A-60-27
Although the invention described in Japanese Patent No. 446 has been proposed, in this invention: 1. When controlling the roll crown, the temperature distribution of the sleeve and the prevention of deformation due to the temperature distribution are not considered, and the crown control is performed. The amount becomes large, and the control becomes difficult in terms of thermal stress.
2.冷却水流路がらせん状であるので流路長が大となり、
流体抵抗が大きくなつて流量を大きくすることが難し
く、かつ、冷却水の温度が流路出口に近づくほど高くな
つてスリーブの幅方向温度差が大きくなる。2. Since the cooling water flow path is spiral, the flow path length becomes large,
It is difficult to increase the flow rate as the fluid resistance increases, and the temperature difference in the width direction of the sleeve increases as the temperature of the cooling water increases as it approaches the flow path outlet.
3.テーパーピストンの位置が加圧流体の圧力だけで定ま
るのでなく、ロール端部のピストン摺動空間の摺動面の
加工偏差、およびデーパーピストン自体の加工偏差によ
り、変動するのでロール変形が左右対称にならない。3.The position of the taper piston is not only determined by the pressure of the fluid under pressure, but it also fluctuates due to the machining deviation of the sliding surface of the piston sliding space at the end of the roll and the machining deviation of the taper piston itself, which causes roll deformation. Not symmetrical.
4.第５図に示すように、テーパーピストン位置よりロー
ル端側の変位は、ピストンにより反軸芯方向に拡げられ
る以前の状態にもどろうとして、スリーブ自身が軸芯方
向に撓み、スリーブの反軸芯方向への変位がテーパーピ
ストン位置からロール端に向つて、単純に増加しないの
で板幅端のクラウンが改善されず、むしろ悪化する。4. As shown in Fig. 5, the displacement on the roll end side from the taper piston position tries to return to the state before it was expanded in the opposite axial direction by the piston, the sleeve itself bends in the axial direction, and the sleeve reverses. Since the displacement in the axial direction does not simply increase from the taper piston position toward the roll end, the crown at the plate width end is not improved, but rather deteriorated.
5.冷却用ロールは溶融金属に接触し、高温，高熱応力状
態で使用されるということが考慮されておらず、スリー
ブ内面に冷却水溝が設けられているので、該冷却水溝か
らクラツクが伸展してロールが短期間で使えなくなり、
ロールにかかる費用が増加する。5. It is not considered that the cooling roll comes into contact with the molten metal and is used in a high temperature and high thermal stress state. Since the cooling water groove is provided on the inner surface of the sleeve, a crack is generated from the cooling water groove. The roll is extended and the roll becomes unusable in a short period of time,
Roll costs increase.
等の問題があつた。There was a problem such as.
本発明の課題は、ロールクラウンを低減させ、さらに鋳
造開始時の過渡的なロールクラウン変化を打ち消し、幅
方向の厚み変化のない製品を生産する双ロール式連続鋳
造装置を提供するにある。An object of the present invention is to provide a twin-roll type continuous casting apparatus that reduces the roll crown, cancels a transitional roll crown change at the start of casting, and produces a product in which the thickness does not change in the width direction.
上記の課題は、冷却用ロールの本体外周に内外２層のス
リーブが装着されており、該スリーブ間に前記ロールの
軸方向に沿い冷却用流体流路が形成されていることと、
前記２層のスリーブの内の内層スリーブと冷却用ロール
本体との間に、ロール形状制御用加圧室が設けられてい
る双ロール式連続鋳造装置により達成される。The above-mentioned problem is that inner and outer two-layer sleeves are mounted on the outer circumference of the body of the cooling roll, and a cooling fluid flow path is formed between the sleeves along the axial direction of the roll,
This is achieved by a twin roll type continuous casting device in which a pressure chamber for roll shape control is provided between the inner layer sleeve of the two layer sleeves and the cooling roll body.
冷却用ロール本体外周に内外２層のスリーブが装着さ
れ、前記２層のスリーブ間に前記冷却用ロールの軸方向
に沿う冷却用流体流路が形成されているので、流路長が
短くなると共に流路断面積が増大して冷却能力が大きく
なる。冷却能力が大きくなるので外層スリーブの温度上
昇が少なくなり、冷却用ロールの板幅方向の温度差が減
つて、ロール膨張量およびロールクラウン量が低減され
る。Two layers of inner and outer sleeves are mounted on the outer circumference of the cooling roll body, and a cooling fluid flow path is formed between the two layers of sleeves along the axial direction of the cooling roll, so that the flow path length is shortened. The cross-sectional area of the flow path increases and the cooling capacity increases. Since the cooling capacity is increased, the temperature rise of the outer layer sleeve is reduced, the temperature difference in the plate width direction of the cooling roll is reduced, and the roll expansion amount and the roll crown amount are reduced.
さらに冷却用ロール本体と内層スリーブとの間にロール
形状制御用加圧室が設けられて、該ロール形状制御用加
圧室に充填された加圧流体の圧力が制御されるので、冷
却用ロールの形状が制御され、ロールクラウン量が低減
される。Further, since a roll shape control pressure chamber is provided between the cooling roll main body and the inner layer sleeve to control the pressure of the pressurized fluid filled in the roll shape control pressure chamber, the cooling roll is controlled. Is controlled, and the amount of roll crown is reduced.
以下本発明を双ロール式連続鋳造装置の冷却用ロールに
適用した実施例を第１図〜第３図を参照して説明する。
第１−ａ図において、冷却用ロール本体５の外周には、
内層スリーブ４および外層スリーブ２が焼ばめされてお
り、前記冷却用ロール本体５は前記冷却用ロールの胴部
両側に突出して設けられたロール軸受部に装着された軸
受６により回転自在に支持されている。前記内層スリー
ブ４の内周面の軸方向中央部を薄肉として加圧流体充填
室３が設けられ、外周面には冷却用ロールの軸芯の方向
に沿う冷却用流体流路１が設けられている。前記外層ス
リーブ２は熱伝導のよい銅系合金でできている。An embodiment in which the present invention is applied to a cooling roll of a twin roll type continuous casting device will be described below with reference to FIGS. 1 to 3.
In FIG. 1-a, on the outer circumference of the cooling roll main body 5,
The inner layer sleeve 4 and the outer layer sleeve 2 are shrink-fitted, and the cooling roll body 5 is rotatably supported by bearings 6 mounted on roll bearing portions provided on both sides of the body portion of the cooling roll. Has been done. The inner peripheral surface of the inner layer sleeve 4 is provided with a pressurized fluid filling chamber 3 having a thin center portion in the axial direction, and the outer peripheral surface is provided with a cooling fluid passage 1 along the axial direction of the cooling roll. There is. The outer layer sleeve 2 is made of a copper-based alloy having good thermal conductivity.
外層スリーブ２の焼ばめ量は、溶融金属との接触による
熱膨脹により焼ばめ効果が失われないよう、焼ばめ面直
径の1/700〜1/800とし、通常の焼ばめ量である1/1000よ
り大きくしてある。The shrink fit amount of the outer layer sleeve 2 is 1/700 to 1/800 of the shrink fit surface diameter so that the shrink fit effect is not lost due to thermal expansion due to contact with the molten metal. It is larger than a certain 1/1000.
前記ロール軸受部には、冷却用流体の入口である環型ロ
ータリージヨイント10および冷却用流体の出口である環
型ロータリージヨイント11が設けられ、前記環型ロータ
リージヨイント10と前記冷却流体用流路１を連通する冷
却流体供給路７、および前記冷却用流体流路１と環型ロ
ータリージヨイント11とを連通する冷却流体排出路８が
前記冷却用ロール本体５内に設けられている。さらにロ
ール軸受部の一方の端に加圧流体の入口である軸型ロー
タリージヨイント12が設けられ、該軸型ロータリージヨ
イント12と前記ロール形状制御用加圧室３とを連通する
加圧流体流路９が前記冷却用ロール本体５内に設けられ
ている。前記環型ロータリージヨイント10,11、軸型ロ
ータリージヨイント12は、それぞれ、図示されていない
冷却用流体供給配管、冷却用流体排出配管、加圧流体配
管に接続されている。冷却用流体としては水を用い、加
圧流体としては油圧装置用の油を用いている。The roll bearing portion is provided with a ring-shaped rotary joint 10 which is an inlet for the cooling fluid and a ring-shaped rotary joint 11 which is an outlet for the cooling fluid, and is provided for the ring-shaped rotary joint 10 and the cooling fluid. A cooling fluid supply passage 7 that communicates the flow passage 1 and a cooling fluid discharge passage 8 that communicates the cooling fluid flow passage 1 and the ring type rotary joint 11 are provided in the cooling roll main body 5. Further, a shaft-type rotary joint 12 that is an inlet of the pressurizing fluid is provided at one end of the roll bearing portion, and the pressurizing fluid that connects the shaft-type rotary joint 12 and the roll shape control pressurizing chamber 3 is connected. A flow path 9 is provided in the cooling roll body 5. The ring-type rotary joints 10 and 11 and the shaft-type rotary joint 12 are connected to a cooling fluid supply pipe, a cooling fluid discharge pipe, and a pressurized fluid pipe, which are not shown. Water is used as the cooling fluid, and oil for the hydraulic device is used as the pressurized fluid.
上記冷却用ロールにおいて、冷却用流体供給管より供給
された冷却用流体は、環型ロータリージヨイント10、冷
却用流体供給路７を経て冷却用流体流路を流れつつ外層
スリーブ２を介して溶融金属を冷却し、次いで冷却用流
体排出路８、環型ロータリージヨイント11を経て、冷却
用流体排出配管へ排出される。In the above-mentioned cooling roll, the cooling fluid supplied from the cooling fluid supply pipe is melted through the outer layer sleeve 2 while flowing through the ring-shaped rotary joint 10 and the cooling fluid supply passage 7 through the cooling fluid passage. The metal is cooled and then discharged through the cooling fluid discharge passage 8 and the ring type rotary joint 11 to the cooling fluid discharge pipe.
冷却用流体流路１は第２図に示すごとく、ロール軸の方
向に沿つて設けられているので、流路長が短くて圧力損
失が少なくなり、多量の冷却用流体を流せるので、冷却
能力が大きくなつて外層スリーブの温度上昇が少なくな
ると共に冷却用ロール軸方向の温度差が少なくなる。さ
らに外層スリーブ２に熱伝達率のよい銅系合金が用いら
れているので、鋼製スリーブに比較し、スリーブ温度上
昇は小さくロール軸方向温度差をも小さい。また、冷却
用流体流路は第２図に示すごとく、内層スリーブの外周
面にロール軸方向に沿つて形成されているが完全に該ロ
ール軸に平行ではなく、前記スリーブ外周面の母線に対
して該流路方向をわずかに傾斜させ、冷却用流体流路の
入口と出口の間で、流路幅Ｂに流路壁幅ｂを加えた幅に
等しい長さだけ、前記流路のスリーブの円周上の位置を
らせん状にずらせてある。冷却用流体流路が上述のごと
くスリーブ母線の方向に対して傾斜して設けられている
ので、冷却用ロールの外周のどの母線部分が冷却用ロー
ル間隙が最小である場所（ロールギヤツプ）に位置して
も、該母線位置で内外層スリーブ間に流路壁が存在し、
該流路壁13が外層スリーブに加わる鋳片の反力による外
層スリーブの変形を防いでいる。As shown in FIG. 2, the cooling fluid flow path 1 is provided along the direction of the roll axis, so that the flow path length is short and the pressure loss is small, and a large amount of cooling fluid can be flowed. Is increased, the temperature rise of the outer layer sleeve is reduced and the temperature difference in the cooling roll axial direction is reduced. Further, since the outer layer sleeve 2 is made of a copper alloy having a high heat transfer coefficient, the temperature rise of the sleeve is small and the temperature difference in the roll axial direction is small as compared with the steel sleeve. As shown in FIG. 2, the cooling fluid flow path is formed along the roll axial direction on the outer peripheral surface of the inner layer sleeve, but it is not completely parallel to the roll axis, and the cooling fluid flow path with respect to the generatrix of the outer peripheral surface of the sleeve. By slightly inclining the flow path direction, and between the inlet and the outlet of the cooling fluid flow path by a length equal to the width of the flow path width B plus the flow path wall width b The position on the circumference is shifted in a spiral shape. As described above, the cooling fluid flow path is provided so as to be inclined with respect to the direction of the sleeve busbar, so that which busbar portion of the outer circumference of the cooling roll is located at the place where the cooling roll gap is the minimum (roll gear tap). However, there is a flow path wall between the inner and outer layer sleeves at the bus bar position,
The flow path wall 13 prevents the outer layer sleeve from being deformed by the reaction force of the cast piece applied to the outer layer sleeve.
内層スリーブ４の内周面の、冷却用流体供給路および冷
却用流体排出路が設けられている両端部を除いた部分
が、削りこまれて冷却用ロール本体５の外周面との間に
空洞部を形成し、該空洞部は前記図示されていない加圧
流体配管から、軸型ロータリージヨイント12、加圧流体
流路９を経て加圧流体を供給されるロール形状制御用加
圧室３となつている。A portion of the inner peripheral surface of the inner layer sleeve 4 excluding both ends where the cooling fluid supply passage and the cooling fluid discharge passage are provided is carved into a cavity between the inner peripheral surface and the outer peripheral surface of the cooling roll main body 5. And the hollow portion forms a roll shape control pressurizing chamber 3 to which the pressurizing fluid is supplied from the pressurizing fluid pipe (not shown) through the shaft type rotary joint 12 and the pressurizing fluid flow passage 9. It is said.
前述の銅合金製外層スリーブおよび冷却用流体流路によ
り、スリーブ板幅方向および板厚方向温度分布に起因す
るロールクラウンが減少された。これに加えて、ロール
形状制御用加圧室３に加圧流体が充填されて加圧され、
内層スリーブが膨脹変形する。内層スリーブの変形に伴
つて、該内層スリーブの外周に流路壁13を介して接して
いる外層スリーブの形状も変形されるので、加圧圧力の
調節により外層スリーブの変形、すなわちロールクラウ
ンが制御される。The above-mentioned copper alloy outer layer sleeve and the cooling fluid flow path reduced the roll crown caused by the temperature distribution in the width direction and the thickness direction of the sleeve plate. In addition to this, the pressurizing chamber 3 for roll shape control is filled with pressurized fluid and pressurized,
The inner layer sleeve expands and deforms. Along with the deformation of the inner layer sleeve, the shape of the outer layer sleeve which is in contact with the outer circumference of the inner layer sleeve via the flow path wall 13 is also deformed, so that the deformation of the outer layer sleeve, that is, the roll crown is controlled by adjusting the pressurizing pressure. To be done.
ロールクラウンは前述のように冷却用ロールの不均一な
温度上昇に起因するものであり、鋳造開始から１〜３分
間は、クラウンは徐々に増加する。これを打ち消すため
に、 イ．ロール形状制御用加圧室３内の流体圧力が所定の値
のときに冷却用ロール表面が平坦となるように外層スリ
ーブ２の外周面を仕上げ、 ロ．鋳造開始時、加圧流体圧力を前記所定の値に保つて
冷却用ロールの温度が上昇していない状態での冷却用ロ
ール外周を平坦な形状に保持し、 ハ．鋳造時間の経過と共に温度上昇によつて大きくなる
冷却用ロールの中央部外径を加圧流体の圧力を低減して
減少させ、冷却用ロール外周を平坦な状態に保持した。The roll crown is caused by the nonuniform temperature rise of the cooling roll as described above, and the crown gradually increases for 1 to 3 minutes from the start of casting. To cancel this, a. The outer peripheral surface of the outer layer sleeve 2 is finished so that the surface of the cooling roll becomes flat when the fluid pressure in the roll shape control pressurizing chamber 3 has a predetermined value. At the start of casting, the pressurizing fluid pressure is maintained at the predetermined value and the outer circumference of the cooling roll is maintained in a flat shape while the temperature of the cooling roll is not rising. The outer diameter of the central portion of the cooling roll, which increases as the casting time elapses and increases due to the temperature increase, was reduced by reducing the pressure of the pressurized fluid, and the outer circumference of the cooling roll was kept flat.
ので、鋳造開始当初から幅方向板厚が均一な鋳片が得ら
れ、歩留りが向上した。Therefore, a slab with a uniform plate thickness in the width direction was obtained from the beginning of casting, and the yield was improved.
本実施例においては、冷却用ロールは外径800mm、面長6
00mm、外層スリーブの厚さ30mm、内層スリーブの厚さ50
mm、加圧流体充填室部の内層スリーブ厚さ20mm、冷却用
流体流路内の冷却水流速5m/s、加圧流体圧力200kg/cm2
として、ステンレス鋼を鋳造し、良好なクラウン制御特
性を得られた。In this embodiment, the cooling roll has an outer diameter of 800 mm and a face length of 6
00mm, outer layer sleeve thickness 30mm, inner layer sleeve thickness 50
mm, thickness of inner layer sleeve in pressurized fluid filled chamber 20 mm, cooling water flow rate in cooling fluid flow path 5 m / s, pressurized fluid pressure 200 kg / cm 2
As a result, stainless steel was cast, and good crown control characteristics were obtained.
第１−ｂ図は本発明の第２の実施例を示し、鋳造条件に
合わせてロール形状制御用加圧室を二つの部分に分ける
と共に、冷却流体供給、排出路をスリーブの端面に設け
たものであり、前記第１の実施例と同様の符号を付した
ので説明は省略する。FIG. 1-b shows a second embodiment of the present invention, in which the pressurizing chamber for roll shape control is divided into two parts according to casting conditions, and cooling fluid supply and discharge passages are provided on the end surface of the sleeve. Since the same reference numerals as those in the first embodiment are attached, the description thereof will be omitted.
本発明の適用可能な双ロール式連続鋳造装置に用いられ
る冷却用ロールは、直径が600mm〜1200mm、面長が600mm
〜1600mmであり、板厚２〜50mmの普通鋼、ステンレス
鋼，銅，アルミニウム等の鋳片を鋳造速度１〜60m/分で
製造する。The cooling roll used in the twin roll type continuous casting apparatus applicable to the present invention has a diameter of 600 mm to 1200 mm and a face length of 600 mm.
~ 1600 mm, and a slab of ordinary steel, stainless steel, copper, aluminum, etc. having a plate thickness of 2 to 50 mm is manufactured at a casting speed of 1 to 60 m / min.
本発明によれば、冷却用ロール本体の外周に内外２層の
スリーブを装着し、該２層のスリーブの間に前記ロール
の軸の方向に沿う冷却用流体流路が設けられたので冷却
用流体流路が短くなつてロール軸方向のスリーブ表面で
の温度差が少なくなつて、ロールクラウンが減少すると
共に、内層スリーブと冷却用ロール本体との間にロール
形状制御用加圧室が設けられたので、該ロール形状制御
用加圧室の流体を加圧して内層スリーブを介して外層ス
リーブの形状すなわちロールクラウンを制御することが
可能となり、板幅方向の板厚が均一な鋳片が生産される
効果がある。According to the present invention, two layers of inner and outer sleeves are attached to the outer circumference of the cooling roll main body, and a cooling fluid flow path is provided along the axial direction of the roll between the two layers of sleeves. By shortening the fluid flow path and reducing the temperature difference on the sleeve surface in the roll axial direction, the roll crown is reduced, and a roll shape control pressure chamber is provided between the inner layer sleeve and the cooling roll body. Therefore, it becomes possible to control the shape of the outer layer sleeve, that is, the roll crown through the inner layer sleeve by pressurizing the fluid in the roll shape control pressurizing chamber, producing a slab with a uniform plate thickness in the plate width direction. Is effective.
第１−ａ図は本発明の第１の実施例を示す断面図であ
り、第１−ｂ図は本発明の第２の実施例を示す断面図で
あり、第２図は第１−ａ図の内層スリーブを示す側面図
であり、第３図は第２図のＩ−Ｉ線に沿つてみた正面図
であり、第４図は双ロール式連続鋳造装置を示す説明図
であり、第５図はテーパーピストンを用いてロールクラ
ウン制御を行う従来技術の例を示す断面図であり、第６
−ａ図、第６−ａ図および第６−ｃ図は双ロール式連続
鋳造装置操業中の冷却用ロール外層スリーブに生ずる温
度分布を示す図である。 １……冷却用流体流路、２……外層スリーブ、３……ロ
ール形状制御用加圧室、４……内層スリーブ、５……冷
却用ロール本体。FIG. 1-a is a sectional view showing a first embodiment of the present invention, FIG. 1-b is a sectional view showing a second embodiment of the present invention, and FIG. FIG. 3 is a side view showing the inner layer sleeve of the figure, FIG. 3 is a front view taken along the line I-I of FIG. 2, and FIG. 4 is an explanatory view showing a twin roll type continuous casting apparatus. FIG. 5 is a sectional view showing an example of the prior art in which roll crown control is performed by using a taper piston.
-A, 6-a and 6-c are diagrams showing the temperature distribution occurring in the outer roll sleeve for cooling during the operation of the twin roll type continuous casting apparatus. 1 ... Cooling fluid flow path, 2 ... Outer layer sleeve, 3 ... Roll shape control pressure chamber, 4 ... Inner layer sleeve, 5 ... Cooling roll body.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 木村 智明 茨城県日立市幸町３丁目１番１号 株式会 社日立製作所日立工場内 (72)発明者 星野 和夫 山口県新南陽市大字富田4976番地 日新製 鋼株式会社周南製鋼所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tomoaki Kimura 3-1-1, Saiwaicho, Hitachi-shi, Ibaraki Hitachi Ltd. Hitachi factory (72) Inventor Kazuo Hoshino 4976 Tomita, New Nanyo, Yamaguchi Prefecture Shunan Steel Works of Nisshin Steel Co., Ltd.
Claims (4)
わりに回転する２本の冷却用ロールの間に溶融金属が注
入され、外溶融金属が前記冷却用ロールによつて冷却凝
固させられつつ前記冷却用ロールの間隙から板状の鋳片
として引き抜かれる双ロール式連続鋳造装置において、 前記冷却用ロールの本体外周に内外２層のスリーブが装
着されており、該スリーブ間に前記ロールの軸方向に沿
う複数の冷却用流体流路が形成されていることと、前記
２層のスリーブの内の内層スリーブと冷却用ロール本体
との間にロール形状制御用加圧室が設けられていること
を特徴とする双ロール式連続鋳造装置。1. A molten metal is poured between two cooling rolls, which are placed facing each other horizontally and rotate around their respective axes, and the outer molten metal is cooled and solidified by the cooling rolls. While in the twin roll type continuous casting apparatus which is drawn out as a plate-shaped cast piece from the gap of the cooling roll, inner and outer two-layer sleeves are mounted on the outer circumference of the body of the cooling roll, and A plurality of cooling fluid flow paths are formed along the axial direction, and a roll shape control pressure chamber is provided between the inner layer sleeve of the two layer sleeves and the cooling roll body. A twin roll type continuous casting machine characterized by the above.
ていることを特徴とする特許請求の範囲第１項記載の双
ロール式連続鋳造装置。2. A twin roll type continuous casting apparatus according to claim 1, wherein a cooling fluid passage is provided in the inner layer sleeve.
対してらせん状に傾斜しており、該流路が入口と出口の
間で少なくとも前記冷却用流体流路の幅と、前記冷却用
流体流路を隔てる流路壁の幅とを加えた長さだけスリー
ブ円周上の位置がずれていることを特徴とする特許請求
の範囲第１〜２項のいずれかの項に記載の双ロール式連
続鋳造装置。3. The cooling fluid flow passage is spirally inclined with respect to the generatrix of the sleeve, and the flow passage has at least the width of the cooling fluid flow passage between the inlet and the outlet and the cooling flow passage. The position on the circumference of the sleeve is displaced by a length including the width of the flow channel wall separating the working fluid flow channel, and the position on the sleeve circumference is shifted. Twin roll type continuous casting equipment.
冷却用ロール本体との間に空洞部を設け、該空洞部をロ
ール形状制御用加圧室としたことを特徴とする特許請求
の範囲第１〜３項のいずれかの項に記載の双ロール式連
続鋳造装置。4. An inner layer sleeve having a thin axial center portion provided with a cavity between the inner layer sleeve and a cooling roll main body, and the cavity serving as a roll shape control pressure chamber. The twin roll type continuous casting apparatus according to any one of Items 1 to 3.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62292659A JPH07121440B2 (en) | 1987-11-19 | 1987-11-19 | Twin roll type continuous casting machine |
| KR1019880015172A KR890007816A (en) | 1987-11-19 | 1988-11-18 | Twin Roll Continuous Casting Machine |
| DE3839110A DE3839110A1 (en) | 1987-11-19 | 1988-11-18 | Duo-roll continuous casting installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62292659A JPH07121440B2 (en) | 1987-11-19 | 1987-11-19 | Twin roll type continuous casting machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01133642A JPH01133642A (en) | 1989-05-25 |
| JPH07121440B2 true JPH07121440B2 (en) | 1995-12-25 |
Family
ID=17784643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62292659A Expired - Fee Related JPH07121440B2 (en) | 1987-11-19 | 1987-11-19 | Twin roll type continuous casting machine |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH07121440B2 (en) |
| KR (1) | KR890007816A (en) |
| DE (1) | DE3839110A1 (en) |
Families Citing this family (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5626183A (en) * | 1989-07-14 | 1997-05-06 | Fata Hunter, Inc. | System for a crown control roll casting machine |
| US4993478A (en) * | 1990-03-16 | 1991-02-19 | Battelle Development Corporation | Uniformly-cooled casting wheel |
| DE4026075A1 (en) * | 1990-08-17 | 1992-02-20 | Sundwiger Eisen Maschinen | CASTING WHEEL, ESPECIALLY FOR A ROLLING CASTING MACHINE |
| GB9100151D0 (en) * | 1991-01-04 | 1991-02-20 | Davy Distington Ltd | Strip caster roll |
| JPH06182499A (en) * | 1992-12-22 | 1994-07-05 | Mitsubishi Heavy Ind Ltd | Cooling roll in continuous casting apparatus and manufacture thereof |
| EP0680795A1 (en) * | 1994-05-02 | 1995-11-08 | Siemens Aktiengesellschaft | In roll pins supported roll for a continuous casting installation producing metal strips |
| EP0687515B1 (en) * | 1994-06-13 | 2000-09-20 | Mitsubishi Jukogyo Kabushiki Kaisha | Cooling drum for a continuous casting system and method for manufacturing the same |
| AUPN053695A0 (en) * | 1995-01-13 | 1995-02-09 | Bhp Steel (Jla) Pty Limited | Casting roll |
| IT1276656B1 (en) * | 1995-04-03 | 1997-11-03 | Innocenti Eng Spa | ROLLER FOR CONTINUOUS CASTING MOLD WITH COUNTER-ROTATING ROLLERS FOR THIN THICKNESS |
| FR2758282B1 (en) * | 1997-01-16 | 1999-04-09 | Usinor | CYLINDER FOR A ROLLING OR CONTINUOUS CASTING INSTALLATION OF METALS |
| GB9710663D0 (en) * | 1997-04-24 | 1997-07-16 | Kvaerner Clecim Cont Casting | A casting roll and roll stand |
| AUPP190598A0 (en) * | 1998-02-19 | 1998-03-12 | Bhp Steel (Jla) Pty Limited | Cooling roll |
| AT408199B (en) | 1999-09-06 | 2001-09-25 | Voest Alpine Ind Anlagen | CASTING ROLLER |
| JP4535644B2 (en) * | 2001-07-04 | 2010-09-01 | 新日本製鐵株式会社 | Crown control method for ribbon slab |
| CN1195599C (en) | 2000-07-19 | 2005-04-06 | 三菱重工业株式会社 | Dual drum type continuous casting device and method for continuous casting |
| DE10059304A1 (en) * | 2000-11-29 | 2002-06-06 | Sms Demag Ag | Casting roller for casting and / or supporting a casting strand, in particular for a two-roller casting machine |
| KR100490990B1 (en) * | 2000-12-20 | 2005-05-24 | 주식회사 포스코 | structure for cooling the roll in twin strip caster |
| AU2002216075A1 (en) * | 2000-12-21 | 2002-07-01 | Main Management Inspiration Ag | Casting roller with variable profile for casting metal strip in a casting rollerplant |
| CH695089A5 (en) | 2001-09-18 | 2005-12-15 | Main Man Inspiration Ag | Casting roll for a twin-roll casting machine. |
| CH696063A5 (en) * | 2001-09-18 | 2006-12-15 | Main Man Inspiration Ag | Casting roll for a twin-roll casting machine. |
| US7165962B2 (en) | 2004-12-21 | 2007-01-23 | Hanson Dana R | Web handling roll stand |
| JP2007196260A (en) * | 2006-01-26 | 2007-08-09 | Ishikawajima Harima Heavy Ind Co Ltd | Twin-roll casting machine |
| DE102006055769A1 (en) | 2006-11-25 | 2008-05-29 | Sms Demag Ag | Casting roller with active profile control |
| JP5939372B2 (en) | 2010-03-30 | 2016-06-22 | 住友電気工業株式会社 | Coil material and manufacturing method thereof |
| CN103611898B (en) * | 2013-12-10 | 2016-08-10 | 青岛云路先进材料技术有限公司 | Copper sheathing manufacture method |
| CN112045156A (en) * | 2020-09-16 | 2020-12-08 | 无锡天德金属制品有限公司 | Roll sleeve structure for high-strength aluminum alloy casting and rolling and use method thereof |
| CN113198988A (en) * | 2021-04-07 | 2021-08-03 | 太原理工大学 | High-efficiency heat exchange cooling roller capable of improving axial temperature and thermal deformation uniform distribution |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6035221B2 (en) * | 1982-10-12 | 1985-08-13 | 石川島播磨重工業株式会社 | Metal strip continuous casting method and device |
-
1987
- 1987-11-19 JP JP62292659A patent/JPH07121440B2/en not_active Expired - Fee Related
-
1988
- 1988-11-18 DE DE3839110A patent/DE3839110A1/en not_active Withdrawn
- 1988-11-18 KR KR1019880015172A patent/KR890007816A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| DE3839110A1 (en) | 1989-06-01 |
| JPH01133642A (en) | 1989-05-25 |
| KR890007816A (en) | 1989-07-06 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |