JPS63286247A - Belt supporting device in belt type continuous casting machine - Google Patents
Belt supporting device in belt type continuous casting machineInfo
- Publication number
- JPS63286247A JPS63286247A JP12444487A JP12444487A JPS63286247A JP S63286247 A JPS63286247 A JP S63286247A JP 12444487 A JP12444487 A JP 12444487A JP 12444487 A JP12444487 A JP 12444487A JP S63286247 A JPS63286247 A JP S63286247A
- Authority
- JP
- Japan
- Prior art keywords
- belt
- magnetic
- molten metal
- continuous casting
- belts
- 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
- 238000009749 continuous casting Methods 0.000 title claims description 12
- 239000002184 metal Substances 0.000 claims abstract description 33
- 229910052751 metal Inorganic materials 0.000 claims abstract description 33
- 238000001816 cooling Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000005266 casting Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000000498 cooling water Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000001788 irregular Effects 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 230000008646 thermal stress Effects 0.000 description 3
- 238000003825 pressing Methods 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 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
- B22D11/0677—Accessories therefor for guiding, supporting or tensioning the casting belts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、垂直又は傾斜して配置された一対のベルト間
に形成された湯溜り部に溶融金属を注入し、ベルトを介
してこの溶融金属を冷却させることによって金属薄帯を
連続的に鋳造する際のベルト支持装置に関する。Detailed Description of the Invention [Field of Industrial Application] The present invention involves injecting molten metal into a pool formed between a pair of belts disposed vertically or inclinedly, and discharging the molten metal through the belt. This invention relates to a belt support device for continuous casting of metal ribbon by cooling the metal.
最近、溶鋼等の溶融金属から最終形状に近い数市〜数十
ｍｍ程度の厚さをもつ金属薄帯を直接的に製造する連続
鋳造方法が注目されている。この方法によるとき、従来
のような多段階にわたる圧延工程を省略することができ
るため、工程及び設備の簡略化が図られる。また、各工
程間で素材を加工温度に加熱する工程も本質的に不要な
ものとなるため、省エネルギー効果も期待できる。この
ような連続鋳造装置として、ツインベルト方式、単ベル
ト方式、ツインドラム方式、単ドラム方式等各種のもの
が開発されている。BACKGROUND OF THE INVENTION Recently, a continuous casting method has been attracting attention, in which a thin metal strip having a thickness of approximately several tens of millimeters to a final shape, which is close to the final shape, is directly produced from molten metal such as molten steel. When this method is used, the conventional multi-step rolling process can be omitted, thereby simplifying the process and equipment. Additionally, the process of heating the material to the processing temperature between each process is essentially unnecessary, so energy savings can be expected. Various types of continuous casting equipment have been developed, such as a twin belt system, a single belt system, a twin drum system, and a single drum system.
本発明者等も、ツインベルト式の連続鋳造装置として、
第２図に示す構造をもつものを開発し、これを特願昭６
０−１４３９４５号として先に出願した。The present inventors also used a twin-belt type continuous casting device,
Developed a device with the structure shown in Figure 2, and applied for this patent application in 1986.
It was previously filed as No. 0-143945.
この連続鋳造機の鋳型部１は、テンションブー！Ｊ２ａ
、駆動ブー’Ｊ２ｂ及びステアリングプーリ２ｃにかけ
渡された一対のスチール製ベル）３ａ、 ３ｂと、これ
らベル）３ａ、 ３ｂの間隙に挿入された短片鋳型４で
区画された鋳造空間をもつ。この鋳造空間にタンディッ
ンユ５から溶融金属６が注入され、注入された溶融金属
６は、鋳造領域７でそれぞれのベル）３ａ、 ３ｂの背
面に配置されている噴流管１８と冷却パッド８ａ、 ｊ
ｉｂにより冷却・凝固する。形成された凝固体は、鋳造
領域７下方に設けたガイドロール９及びピンチロール（
図示せず）を経て金属薄帯１０として搬出される。The mold section 1 of this continuous casting machine is a tension-boo! J2a
It has a casting space defined by a pair of steel bells) 3a, 3b which are stretched around the drive boo 'J2b and the steering pulley 2c, and a short piece mold 4 inserted into the gap between these bells) 3a, 3b. Molten metal 6 is injected into this casting space from the dandinyu 5, and the injected molten metal 6 is poured into the casting area 7 into the jet pipes 18 and cooling pads 8a and 8a disposed on the back of each bell 3a and 3b.
Cool and solidify using ib. The formed solidified body is passed through guide rolls 9 and pinch rolls (
(not shown) and then transported out as a metal ribbon 10.
このような連続鋳造機において、溶融金属６から凝固シ
ェルを生成・成長させるためには、溶融金属６を充分に
冷却する必要がある。また、ベルト３ａ、 ３ｂは溶融
金属６によって高温に加熱されるので、溶融金属６の保
有熱からベル）３ａ、 ３ｂを保護し、所定の形状及び
機械的強度をベル）３ａ、 ３ｂに持たせ′ることが必
要になる。そこで、テンションブーＩＪ２Ｈの周囲に設
けた多数の環状溝１１を穿設し、ヘッダ１２から噴流管
１８を通して冷却水を高速でベル）３ａ、 ３ｂの裏面
に噴射し、鋳造領域７にある溶融金属６を冷却すると共
に、ベル）３ａ、 ３ｂの保護を図っている。他方、駆
動プーリ２ｂにも同様な環状溝１３を穿設し、ベル）３
ａ、 ３ｂの背面を伝わって流下した冷却水を戻り管路
１４に回収している。In such a continuous casting machine, in order to generate and grow a solidified shell from the molten metal 6, it is necessary to sufficiently cool the molten metal 6. Furthermore, since the belts 3a and 3b are heated to a high temperature by the molten metal 6, the belts 3a and 3b are protected from the heat retained by the molten metal 6, and the belts 3a and 3b are given a predetermined shape and mechanical strength. 'It becomes necessary to do so. Therefore, a large number of annular grooves 11 are bored around the tension boob IJ2H, and cooling water is injected at high speed from the header 12 through the jet pipe 18 onto the back surfaces of the bells) 3a and 3b, thereby removing the molten metal in the casting area 7. 6, and protects the bells 3a and 3b. On the other hand, a similar annular groove 13 is bored in the drive pulley 2b, and the bell) 3
The cooling water that has flowed down along the back surfaces of the pipes a and 3b is collected in the return pipe 14.
冷却□水をこのようにベルトａａ、 ３ｂに噴射させる
方式を採用するとき、ベル）３ａ、 ３ｂ背面に作用す
る押圧力は比較的小さい。その結果、鋳造領域７に注入
された溶融金属の静圧が低い湯面近傍では溶湯静圧によ
るベル）３ａ、 ３ｂの押圧力を越えないように冷却水
の圧力を容易に調整することができる。When employing this method of injecting cooling water onto the belts aa and 3b, the pressing force acting on the back surfaces of the belts aa and 3b is relatively small. As a result, near the molten metal surface where the static pressure of the molten metal injected into the casting region 7 is low, the pressure of the cooling water can be easily adjusted so as not to exceed the pressing force of bells 3a and 3b due to the static pressure of the molten metal. .
しかし、ベル）３ａ、 ３ｂには、高温の溶融金属又は
凝固シェルによって大きな熱応力が作用し、座屈、変形
等が生じ易い。これによって、たとえばベル）３ａ、
３ｂが内側に脹らむとき、均一な厚みの金属薄帯が得ら
れない。或いは、溶融金属が、ベル）３ａ、 ３’ｂと
凝固シェルとの隙間に差し込み、たれかけ状の二重肌等
が生じる等、得られた金属薄帯の表面性状が劣化する。However, large thermal stress is applied to the bells 3a and 3b by the high-temperature molten metal or solidified shell, and buckling, deformation, etc. are likely to occur. This allows for example bell) 3a,
When 3b bulges inward, a metal ribbon of uniform thickness cannot be obtained. Alternatively, the molten metal may be inserted into the gap between the bells 3a, 3'b and the solidified shell, resulting in deterioration of the surface quality of the obtained metal ribbon, such as the formation of a hanging double skin.
そこで、特願昭６０−１４３９４５号の提案にあっては
、この湯面近傍でのベル） ３ａ、’ ３’ｂの変形を
防止するため、複数の磁性フィンを備えたフィンロール
１５をベル）３ａ、 ３ｂそれぞれの背面に配置してい
る。Therefore, in the proposal of Japanese Patent Application No. 60-143945, in order to prevent the deformation of the bells) 3a and 3'b near the hot water surface, the fin roll 15 equipped with a plurality of magnetic fins is used as a bell). They are placed on the back of each of 3a and 3b.
このフィンロール１５により、ベルト３ａ’、 ３ｂを
吸着し、その平坦度を確保している。The fin rolls 15 attract the belts 3a' and 3b to ensure their flatness.
ところが、この磁性フィンを備えたフィンロール１５を
使用して、連続鋳造を行っていたところ、鋳造領域７に
あるベル）３ａ、３ｂの形状が複雑且つ不規則に変形す
ることが判明した。However, when continuous casting was performed using the fin roll 15 provided with the magnetic fins, it was found that the shapes of the bells 3a and 3b in the casting area 7 were deformed in a complicated and irregular manner.
第３図は、このベルトの変形を説明するための図である
。ベル１−３ａ、 ３ｂは、前述したように溶融金属に
よって高温に加熱され、変形を生じる。このような状態
のベルト３ａ、 ３ｂ’に対して磁性フィン１６の磁力
が作用しても、ベルトの剛性のため、すべての磁性フィ
ン１６にベル）３ａ、 ３ｂが吸着せず、磁性フィン１
６による吸着が局部的に行われ、しがもベルＨａ、 ３
ｂの搬送方向に沿って吸着されるベル）３ａ、 ３ｂの
部分が異なるものとなる。その結果、たとえば第３図の
実線及び破線で示すように、鋳゛造領域７にあるベル）
３ａ、 ３ｂが、複雑な変形を繰り返すことになる。こ
の変形に応じ、ベルト３ａ。FIG. 3 is a diagram for explaining the deformation of this belt. As described above, the bells 1-3a and 3b are heated to a high temperature by molten metal and are deformed. Even if the magnetic force of the magnetic fins 16 acts on the belts 3a, 3b' in this state, the belts 3a, 3b do not attract all the magnetic fins 16 due to the rigidity of the belt, and the magnetic fins 1
6 is locally adsorbed, and Shigamobell Ha, 3
The portions of bells 3a and 3b that are attracted along the conveyance direction of b are different. As a result, as shown for example by the solid and broken lines in FIG.
3a and 3b will undergo repeated complex transformations. According to this deformation, the belt 3a.
３ｂ表面に生成する凝固シェルの形状が不安定なものと
なり、得られた金属薄帯に表面皺、波打ち等の表面欠陥
が生じる。また、金属薄帯自体の形状にも悪影響を及ぼ
すことにもなる。The shape of the solidified shell produced on the surface of 3b becomes unstable, and surface defects such as surface wrinkles and undulations occur in the obtained metal ribbon. Moreover, it will also have an adverse effect on the shape of the metal ribbon itself.
そこで、本発明は、このようなベルトの異常な変形を抑
制して、表面性状及び形状特性の優れた金属薄帯を製造
することを目的とする。Therefore, an object of the present invention is to suppress such abnormal deformation of the belt and to produce a metal ribbon with excellent surface properties and shape characteristics.
本発明のベルト支持装置は、その目的を達成するために
、水冷機構を備えた一対のベルトの間に設けられた湯溜
り部に注入された溶融金属を前記ベルトの表面で冷却し
て凝固シェルを形成させつつ、前記ベルト対の間隙を通
過させて金属薄帯を連続的に鋳造するベルト式連続鋳造
機において、少なくとも前記溶融金属の湯面近傍にある
前記ベルトそれぞれの背面に、非磁性フィンの間に磁性
フィンを分散させたフィンロールを配置したことを特徴
とする。In order to achieve the object, the belt support device of the present invention cools molten metal injected into a pool provided between a pair of belts equipped with a water cooling mechanism on the surface of the belt to form a solidified shell. In a belt-type continuous casting machine that continuously casts a metal ribbon by passing through a gap between the pair of belts while forming It is characterized by arranging fin rolls with magnetic fins dispersed between them.
以下、図面を参照しながら、実施例により本発明の特徴
を具体的に説明する。Hereinafter, the features of the present invention will be specifically explained using examples with reference to the drawings.
第１図は、本発明実施例のベルト支持装置におけるフィ
ンロールを示す。FIG. 1 shows a fin roll in a belt support device according to an embodiment of the present invention.
このフィンロール１５は、磁性フィン１６を非磁性フィ
ン１７の間に分散配置している。そして、この磁性フィ
ン１６が設けられている個所のみで、第３図の場合と同
様に、ベル）３ａ、 ３ｂを吸着するものである。すな
わち、第３図のようにベル）３ａ、 ３ｂの幅方向全長
にわたり磁性フィン１６を配置してベル）３ａ、 ３ｂ
の吸着を行おうとすると、ベルＨａ。This fin roll 15 has magnetic fins 16 dispersed between non-magnetic fins 17. The bells 3a and 3b are attracted only at the locations where the magnetic fins 16 are provided, similar to the case shown in FIG. That is, as shown in FIG. 3, magnetic fins 16 are arranged over the entire length of the bells) 3a and 3b in the width direction.
When trying to adsorb the bell Ha.
３ｂは、熱応力により座屈しようとする力が強いために
接触、非接触を不規則に繰り返す。このような不規則な
形状変化は、本実施例においては、フィンロール１５の
軸方向に分散配置した磁性フィン１６によってベル）３
ａ、 ３ｂを吸着することにより抑制している。3b has a strong tendency to buckle due to thermal stress, so it irregularly repeats contact and non-contact. In this embodiment, such irregular shape changes are caused by the magnetic fins 16 distributed in the axial direction of the fin roll 15.
This is suppressed by adsorbing a and 3b.
すなわち、ベル）３ａ、 ３ｂの全幅を吸着しようとす
ると、第３図に実線及び破線で示したような接触、非接
触が個々の磁性フィン１６表面で繰り返される。そこで
、ベルト３ａ、 ３ｂがフィンロール１５に接触する個
所を磁性フィン１６が設けられている部分にのみ限定し
、ベル）３ａ、 ３ｂの他の個所についテハベルト３ａ
、３ｂをフィンロール１５に対して非接触状態に維持し
熱応力による変形量が吸収されるように非磁性フィン１
７を配置している。これによって、鋳造領域７（第２図
参照）にあるベル）３ａ。That is, when trying to attract the entire width of the bells 3a and 3b, contact and non-contact as shown by solid lines and broken lines in FIG. 3 are repeated on the surface of each magnetic fin 16. Therefore, the parts where the belts 3a, 3b come into contact with the fin roll 15 are limited to only the parts where the magnetic fins 16 are provided, and the belts 3a, 3b are made to contact other parts of the belts 3a, 3b.
, 3b in a non-contact state with respect to the fin roll 15, and the non-magnetic fins 1 are arranged so that the amount of deformation due to thermal stress is absorbed.
7 is placed. Thereby, the bell) 3a in the casting area 7 (see FIG. 2).
３ｂは、第１図の実線で示した安定した形状に維持され
る。3b is maintained in a stable shape as shown by the solid line in FIG.
ベル）３ａ、 ３ｂは、非磁性フィン１７が配置されて
いる個所でフィンロール１５から間隙δをもって離間す
る。この間隙δは、磁性フィン１６の配列状態を変える
ことによって容易に調節することができる。たとえば、
ベルトの剛性は、ベルト厚みによっても異なるので、ベ
ルトの厚さが１．２ｍｍ以下の場合には第１図に示すよ
うに、磁性フィン１６と磁性フィンの間に非磁性フィン
１７を２個配列し、ベルトの厚さが、１．３ｍｍ以上の
場合には、３個配列するなどによって、ベル）３ａ、
３ｂを確実に磁性フィンに吸着することができる。The bells) 3a, 3b are spaced apart from the fin roll 15 by a gap δ at the location where the non-magnetic fins 17 are arranged. This gap δ can be easily adjusted by changing the arrangement of the magnetic fins 16. for example,
The rigidity of the belt also varies depending on the belt thickness, so if the belt thickness is 1.2 mm or less, two non-magnetic fins 17 are arranged between the magnetic fins 16 and the magnetic fins as shown in FIG. However, if the thickness of the belt is 1.3 mm or more, by arranging three belts, etc., the belt) 3a,
3b can be reliably attracted to the magnetic fins.
この間隙δは、３ ｍｍ以下に維持することが好ましい
。この間隙δが３ ｍｍを越えて大きくなると、金属薄
帯に与える影響が顕著となり、製品の形状特性及び表面
性状が劣化する。This gap δ is preferably maintained at 3 mm or less. When the gap δ becomes larger than 3 mm, the influence on the metal ribbon becomes significant, and the shape characteristics and surface properties of the product deteriorate.
第１図の磁性フィン１６及び非磁性フィン１７は、ベル
）３ａ、 ３ｂと接触する面を小さくして、ベルト３ａ
、 ３ｂ背面の冷却効果を増すように、算盤球状にして
いる。しかし、本発明で使用する磁性フィン１６及び非
磁性フィン１７は、このような形状に限らず、種々のも
のを使用することができる。たとえ′ば、磁性フィン１
６及び非磁性フィン１７自体にも冷媒供給用の周溝を設
けたり、耐摩耗性の優れた鉄製リングを磁性フィン１６
に嵌合することができ、この点は特願昭６０−１４３９
４５号の場合と同様である。The magnetic fins 16 and non-magnetic fins 17 in FIG.
, 3b is shaped like an abacus sphere to increase the cooling effect on the back side. However, the magnetic fins 16 and non-magnetic fins 17 used in the present invention are not limited to these shapes, and various shapes can be used. For example, magnetic fin 1
6 and the non-magnetic fins 17 themselves are also provided with circumferential grooves for supplying refrigerant, and iron rings with excellent wear resistance are attached to the magnetic fins 16.
This point is disclosed in Japanese Patent Application 1439-1986.
The same is true for No. 45.
以上に説明したように、本発明のベルト支持装置におい
ては、磁性フィンを非磁性フィンの間に分散配置したフ
ィンロールを使用することによって、幅方向に関して数
点でベルトを吸着支持している。これによって、ベルト
の不規則な変形を防止することができ、安定した形状に
保たれる。その結果、得られた製品は、形状特性及び表
面性状が優れたものとなる。As explained above, in the belt support device of the present invention, the belt is suction-supported at several points in the width direction by using a fin roll in which magnetic fins are dispersed between non-magnetic fins. This prevents irregular deformation of the belt and keeps it in a stable shape. As a result, the obtained product has excellent shape characteristics and surface properties.
第１図は、本発明実施例で使用したフィンロールを示し
、第２図は本発明のベルト支持装置が適用されるベルト
式連続鋳造機を示す。また、第３図は、本発明者等が先
に提案した磁性フィンを備えたフィンロールを示す。
特許出願人 新日本製鐵 株式會社
代 理 人 小 堀 益 （ほか２名
）ｒつ
一１ｌｎ
・＋Ｑ′
ｌｆｌ”FIG. 1 shows a fin roll used in an example of the present invention, and FIG. 2 shows a belt-type continuous casting machine to which the belt support device of the present invention is applied. Moreover, FIG. 3 shows a fin roll equipped with magnetic fins previously proposed by the present inventors. Patent applicant: Nippon Steel Corporation Representative: Masu Kobori (and 2 others)
Claims (1)
溜り部に注入された溶融金属を前記ベルトの表面で冷却
して凝固シェルを形成させつつ、前記ベルト対の間隙を
通過させて金属薄帯を連続的に鋳造するベルト式連続鋳
造機において、少なくとも前記溶融金属の湯面近傍にあ
る前記ベルトそれぞれの背面に、非磁性フィンの間に磁
性フィンを分散させたフィンロールを配置したことを特
徴とするベルト式連続鋳造機におけるベルト支持装置。1. Molten metal injected into a reservoir provided between a pair of belts equipped with a water cooling mechanism is cooled on the surface of the belt to form a solidified shell, while passing through the gap between the pair of belts. In a belt-type continuous casting machine that continuously casts a metal ribbon, a fin roll having magnetic fins dispersed between non-magnetic fins is arranged at least on the back side of each of the belts near the surface of the molten metal. A belt support device for a belt type continuous casting machine, characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12444487A JPH0636968B2 (en) | 1987-05-20 | 1987-05-20 | Belt support device for belt type continuous casting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12444487A JPH0636968B2 (en) | 1987-05-20 | 1987-05-20 | Belt support device for belt type continuous casting machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63286247A true JPS63286247A (en) | 1988-11-22 |
| JPH0636968B2 JPH0636968B2 (en) | 1994-05-18 |
Family
ID=14885658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12444487A Expired - Lifetime JPH0636968B2 (en) | 1987-05-20 | 1987-05-20 | Belt support device for belt type continuous casting machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0636968B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6206083B1 (en) * | 1996-06-07 | 2001-03-27 | Mannesmann Ag | Strip casting device |
-
1987
- 1987-05-20 JP JP12444487A patent/JPH0636968B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6206083B1 (en) * | 1996-06-07 | 2001-03-27 | Mannesmann Ag | Strip casting device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0636968B2 (en) | 1994-05-18 |
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