JPH03291137A - Production of rapidly cooled metal strip - Google Patents
Production of rapidly cooled metal stripInfo
- Publication number
- JPH03291137A JPH03291137A JP9045190A JP9045190A JPH03291137A JP H03291137 A JPH03291137 A JP H03291137A JP 9045190 A JP9045190 A JP 9045190A JP 9045190 A JP9045190 A JP 9045190A JP H03291137 A JPH03291137 A JP H03291137A
- Authority
- JP
- Japan
- Prior art keywords
- belt
- roll
- molten metal
- side seal
- tension
- 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
- 239000002184 metal Substances 0.000 title claims abstract description 42
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 42
- 238000004519 manufacturing process Methods 0.000 title claims description 21
- 238000001816 cooling Methods 0.000 claims abstract description 18
- 238000003825 pressing Methods 0.000 claims description 12
- 238000005266 casting Methods 0.000 claims description 9
- 239000010409 thin film Substances 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 230000035515 penetration Effects 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 description 8
- 238000007796 conventional method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 238000005096 rolling process Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000005499 meniscus Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Landscapes
- Continuous Casting (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、金属急冷薄帯の製造方法に関し、双ロール
法によって金ＩＬＩ帯を製造する場合に、得られる薄帯
の板形状とくに端面形状の有利な改善と共に、安定した
連続操業の維持を図ろうとするものである。Detailed Description of the Invention (Industrial Application Field) The present invention relates to a method for producing a quenched metal ribbon, and relates to a method for producing a metal quenched ribbon, and the present invention relates to a method for producing a metal quenched ribbon, and the invention relates to a method for producing a metal quenched ribbon. The aim is to maintain stable continuous operation as well as to make advantageous improvements.
（従来の技術）
金属薄帯の製造方法の一つとして第２図に示すような双
ロール法が開発され、すでに実用化の段階に入っている
。この双ロール法は、溶融金属１をその注湯ノズル２よ
り高速で回転する一対の冷却ロール３．３のロールキス
部に連続して供給し急冷凝固させて薄帯４を作成するも
のである。(Prior Art) A twin roll method as shown in FIG. 2 has been developed as one of the methods for manufacturing metal ribbons, and has already entered the stage of practical application. In this twin roll method, the molten metal 1 is continuously supplied from the pouring nozzle 2 to the roll kiss portion of a pair of cooling rolls 3.3 rotating at high speed, and is rapidly solidified to form the ribbon 4.
ところで一般に双ロール法で作成した薄帯の板形状は、
中央が厚く両端部が薄いといったクラウン形状を有する
だけでなく、板の両端部ではのこ月形状となったり、酸
化域が生じるため、健全な製品を得るためには両端部を
切り落さざるを得す、歩留りが悪いという問題があった
。By the way, the shape of the ribbon made by the twin roll method is generally
Not only does it have a crown shape that is thick in the center and thin at both ends, but it also has a saw-moon shape and oxidation areas at both ends, so both ends must be cut off to obtain a healthy product. There was a problem that the yield was poor.
この原因は、注湯速度と凝固速度のアンバランスによっ
て余剰の溶湯がロール胴長方向に周期的に流れたり、ロ
ール端面付近の場面高さが中央部に較べて低くなるため
にヒートクラウンが発生し、薄帯の両端部で凝固遅れを
生じてブレークアウトが発生したり、酸化域が生成した
りするためと考えられる。The cause of this is that surplus molten metal periodically flows in the length direction of the roll body due to an imbalance between the pouring speed and solidification rate, and heat crown occurs because the surface height near the roll end surface is lower than the center. However, this is thought to be due to the solidification delay occurring at both ends of the ribbon, resulting in breakout or the formation of oxidized regions.
ごのため従来よりかかる問題点を解決すべく、ロールキ
ス部での溶湯を保持する方法が数多く提案されている。To solve this problem, many methods have been proposed for retaining the molten metal in the roll kiss area.
従来最も代表的な方法は、第３図ａ、ｂに示すように、
２本の冷却ロール３．３とロール端面に押し当てた２個
の固定せき（端面）５とでできる空間に溶湯を注湯し、
薄板４を連続的に製造する方法である。しかしながらこ
の方法では、溶湯が人気および端辺で冷却されるたため
、端辺への凝固もしくは半凝固シュルの付着が増大し、
やがてはこれがロールギャップ内に脱落、かみ込んで鋳
坪に不連続部を住じ、板切れの原因となったり、異常な
圧下反力を生じてロール停止やロール変形といった操業
Ｅラブルを生じるといった問題があった。The most typical conventional method is as shown in Figure 3 a and b.
Pour molten metal into the space created by the two cooling rolls 3.3 and the two fixed weirs (end faces) 5 pressed against the roll end faces,
This is a method for manufacturing thin plates 4 continuously. However, in this method, the molten metal is cooled at the edges and the solidified or semi-solidified shells adhere to the edges.
Eventually, this will fall off and get stuck in the roll gap, creating discontinuities in the casting area, causing plate breakage, and producing abnormal rolling reaction force, causing operational problems such as roll stoppage and roll deformation. There was a problem.
これに対ｔ、て特開昭５７−１３０７４３号公報におい
ては、第４図に示すようにポーラス状耐火物をそなえる
端面押え５をロール端面に押しつけて溶湯洩れ防止を図
ると同時に、ポーラス状耐火物６から不活性ガス７を送
給することによって溶融金属の冷却による凝固シェルの
発生を防止する方法が提案されている６しかしながら、
端辺全面に均一にガスを供給することは極めて難しいた
め、かかる端辺での凝固シェルの形成付着を完全に抑制
することはできず、このため凝固シェルが一旦端辺に付
着すると、上記の方法ではその成長を防ぐことができず
、しかも長期間の使用により摩耗が進行して、ロール端
面と端辺の隙間への溶湯の差し込みが生（、ｚ、ことも
あって、やはり連続的な鋳込みは不可能だったのである
。On the other hand, in JP-A No. 57-130743, as shown in FIG. 4, an end face presser 5 provided with a porous refractory is pressed against the end face of the roll to prevent leakage of molten metal, and at the same time, a porous refractory A method has been proposed for preventing the formation of a solidified shell due to cooling of molten metal by supplying an inert gas 7 from a material 6. However,
Since it is extremely difficult to supply gas uniformly to the entire edge, it is impossible to completely suppress the formation and adhesion of solidified shells on such edges. Therefore, once the solidified shell adheres to the edges, the above-mentioned problems occur. This method cannot prevent its growth, and furthermore, wear progresses with long-term use, resulting in molten metal being inserted into the gap between the end faces of the roll (,z). Casting was impossible.
また特開昭６０−２３４７４４号公報、同５Ｂ −）、
８８５４８号公報では、第５図ａ、ｂ４．．．示すよ
うに端辺をキャタピラあるいはベノ［川・式可動サイト
′・′、・−ル８に代えると共番７、冷却ロール３の（
！！４面パ・の密着性を良くするかめ可動什イドシール
８に同定端辺５を押し当てた装置が提案されている。Also, JP-A No. 60-234744, 5B-),
In the 88548 publication, Fig. 5 a, b4. ．． ．． As shown, if the end side is replaced with a caterpillar or Beno type movable site '・', - rule 8, it will be the same number 7 and the cooling roll 3 (
! ! A device has been proposed in which the identification edge 5 is pressed against a movable hooked fluid seal 8 that improves the adhesion between the four surfaces.
この装置による金属薄帯の製造方法の趣旨は、可動サイ
ドシールを薄帯の鋳込み方向と同じ方向に移動させるこ
とによって、２サイドシールでの凝固生成物を少なくし
この凝固生成物を薄帯と共Ｇコ鋳込もうとするものであ
る。。The purpose of the method for producing metal ribbon using this device is to reduce the solidification products at the two side seals by moving the movable side seal in the same direction as the casting direction of the ribbon, and to transfer the solidification products into the ribbon. It is an attempt to instill mutual G-co. .
この方法ムこより、端面からの湯洩れはかなり改再され
たとはいうものの、わずかながらもサイドシール上に凝
固生成物が形成された場合には、これがロール間で絞り
込まれて凝固生成物のキス部へのかみ込みが生じるので
、とりわけ板厚の薄い薄帯においてはこのかみ込みが薄
帯端部性状におよぼす影響が大きく、これによるブレー
クアウトは防止し得なかった。With this method, the leakage from the end face has been significantly improved, but if a small amount of solidified product is formed on the side seal, it will be squeezed between the rolls and the solidified product will kiss. Particularly in the case of a thin ribbon, this biting has a large effect on the properties of the ribbon end, and breakout due to this cannot be prevented.
（発明が解決しようとする課Ｂ）
このように、従来の方法ではいずれも、端辺にむけ、る
凝固生成物の付着が免れ得ず、薄帯端面の（・１状悪イ
１や、ブ；７・−クアウトが生じ易かったため、工業的
に連続して鋳込みを行うことは極めて難しかつだのであ
る
この発明は、上記の問題を有利に解決するもので２薄帯
端面支持部材に起因した薄帯端部の形状悪化やブレーク
アウトを効果的に防止することのできる急冷薄帯の有利
な製造方法を提案することを目的とする５、
（課題を解決する六−めの手段）
さて発明者らの研究によれば、ロール間隙の端面側を端
面押え部材で封止する従来法によっては、かかる部材が
循環移動式のものであっても該端面押え部材の溶融金属
と接する面を鋳造すべき溶融金属の融点近くまで加熱保
持しない限り、溶接金属の凝固殻がその面上に生成する
のを防止することはできず、とくに鋳造すべき溶融金属
が鉄合金等の高融点全屈σ）場合は、かかる高温度まで
端面押え部材を加熱することは事実上不可能であること
から、端面押え部材のン容融金属に接する面上・・。(Problem B to be solved by the invention) As described above, in all conventional methods, the adhesion of coagulation products toward the edges cannot be avoided, resulting in B;7.- It is extremely difficult and difficult to carry out continuous casting industrially because pull-out easily occurs.This invention advantageously solves the above-mentioned problems. The purpose of the present invention is to propose an advantageous manufacturing method for a quenched ribbon that can effectively prevent deterioration of the shape and breakout of the edge of the quenched ribbon. (Sixth means for solving the problem) According to research by the inventors, depending on the conventional method of sealing the end face side of the roll gap with an end face holding member, even if such a member is of a circulating type, the surface of the end face holding member in contact with the molten metal may be sealed. Unless the molten metal to be cast is heated and maintained close to its melting point, it is not possible to prevent the formation of a solidified shell of the weld metal on the surface of the molten metal. In the case of σ), it is practically impossible to heat the end face holding member to such a high temperature, so on the surface of the end face holding member that is in contact with the molten metal.
の凝固殻の生成は不可避であて・との結論に達した１、
ここにかかｚ５凝固殻が端面押え表面上Ｃ１７生成し、
堆積、成長すれば、この大きな凝固殻はロール間隙にお
いて絞り込まれ、口・−ルの圧下異常、板の破断ひいて
は薄帯のブレークアウトを引き起こすわけである７、
そこで発明者ら番す、凝固殻に起因ｔまた問題の解決に
当たり、従来のように凝固殻の発４を完全Ｃご阻止しよ
うとするのではな（、従来と視点を変え、たとえ凝固殻
が形成されたとして（）、それが大きく成長する前には
く離させてロール間の溶鋼中に導き、ここで再熔解させ
れば良いのではないかと考え、この観点に立脚し了、ｍ
々検討を重ねた結果、試行錯誤の末に、この発明を完成
させるに至ったのである。The conclusion was reached that the formation of a solidified shell is inevitable.
Here, a z5 solidified shell is generated on the end pressing surface C17,
As it accumulates and grows, this large solidified shell is squeezed in the gap between the rolls, causing abnormal rolling of the mouth and roll, fracture of the plate, and breakout of the ribbon7.Therefore, the inventors point out that the solidified shell This is caused by I thought that it would be a good idea to peel it off before it grows large and introduce it into the molten steel between the rolls, where it would be remelted, and based on this point of view, I completed m
After much study and trial and error, this invention was finally completed.
すなわちこの発明は、一対の冷却ロールと該ロール端面
に当接配置Ｌ７スー１−シ＜−・対の端面押さえ部材と
で形成する鋳造空間に、溶融金属を連続的に供給し、急
冷凝固させ７遣雇薄帯を製造するに当たり、
該端面押さえ部材として可動式サイドシールベルトを用
い１．該ベルトを、移動速度二ロール周速の１６０倍超
１ｌ、２倍以下、付加張力：ベルトの耐力の０．６〜０
４８倍の条件下で移動させることからなる急冷金属薄帯
の製造方法である。That is, this invention continuously supplies molten metal to a casting space formed by a pair of cooling rolls and a pair of end face pressing members arranged in contact with the end faces of the rolls, and causes the metal to rapidly solidify. 7 In manufacturing thin strips, a movable side seal belt is used as the end face pressing member.1. The belt is moved at a speed of more than 160 times the circumferential speed of the two rolls, but not more than 2 times, additional tension: 0.6 to 0 of the yield strength of the belt.
This is a method for producing a quenched metal ribbon, which comprises moving the metal ribbon under conditions of 48 times.
（作 用）
以下、この発明による凝固殻のはく離、再熔解状況につ
き、従来法と比較して説明する。(Function) The peeling off and remelting of the solidified shell according to the present invention will be explained below in comparison with the conventional method.
さて短辺側における凝固殻の生成は、湯溜まり部上方の
メニスカス近傍で始まり、可動サイドシールの移動に帯
同し５て移動する間に成長する。従ってかような凝固殻
に起因した弊害を防止するためには、凝固殻ができるだ
け小さいうちに何らかの力を作用させて、・ベルト表面
からはく離してやればいいわけである。Now, the formation of a solidified shell on the short side begins in the vicinity of the meniscus above the pool, and grows while the movable side seal moves along with the movement of the movable side seal. Therefore, in order to prevent such adverse effects caused by the solidified shell, it is necessary to apply some kind of force to the solidified shell while it is still as small as possible to separate it from the belt surface.
そこでかかる凝固殻のはく離に寄与する力について調査
、検討Ｌ７たところ、冷却ロールの端面による絞り込み
の他、ノズルからの溶湯吐出流の衝突力も効果があるこ
とが判明した。Therefore, we investigated and studied the force that contributes to the peeling of the solidified shell, and found that in addition to squeezing by the end face of the cooling roll, the impact force of the molten metal discharged from the nozzle was also effective.
すなわちノズルから湯溜まり部へ吐出された溶湯は、第
６図にその流れを示したように、−・旦底部へ降下した
のち、短辺に向かって移動し、短辺近傍域では、上昇流
９となって短辺面と衝突する流動経路をとり１．この衝
突力が凝固殻ＩＯのはく離に寄与することが判明したの
である。In other words, as shown in Fig. 6, the molten metal discharged from the nozzle into the molten pool descends to the bottom and then moves toward the short side, and in the vicinity of the short side, there is an upward flow. 9 and take a flow path that collides with the short side surface.1. It has been found that this collision force contributes to the separation of the solidified shell IO.
ここに上記の衝突力によるはく離効果は、凝固殻が小さ
いほど、またベルトの移動速度と溶湯の上昇速度の相対
速度が大きいほど、著しいことから、ベルトの移動速度
はより大きいほうが好ましいことになる。Here, the peeling effect due to the above-mentioned collision force is more significant as the solidified shell is smaller and as the relative speed between the moving speed of the belt and the rising speed of the molten metal is larger, so it is preferable that the moving speed of the belt is higher. .
一方、冷却ロール端面による絞り込み効果も、冷却ロー
ル端面とベルト表面の相対摺動量が大きいほど有効であ
るから、ベルトの移動速度はロール周速と差異が大きい
ほうが好ましい。とはいえベルトの移動速度を小さくす
ると、凝固殻が成長してはく離しにくくなるので、ベル
トの移動速度を大きくすることによってＩＪ−ル周速と
の差を拡げることがより好ましい。On the other hand, since the squeezing effect by the cooling roll end face is also more effective as the amount of relative sliding between the cooling roll end face and the belt surface is larger, it is preferable that the difference between the belt moving speed and the roll circumferential speed is large. However, if the moving speed of the belt is reduced, the solidified shells will grow and become difficult to separate, so it is more preferable to increase the moving speed of the belt to widen the difference from the IJ-ru circumferential speed.
そこでこの発明では、ベルトの移動速度をロール周速よ
りも大きくすることによって、冷却ロール端面による絞
り込み効果おＬび溶湯吐出流の衝突力によるベルト表面
洗浄効果を増大させ、凝固殻が小さいうちに該ベルト表
面から効果的にはく離させて溶湯中に導き１、再熔解さ
せることにより、凝固殻に起因した問題を解決したので
ある。Therefore, in this invention, by increasing the moving speed of the belt to be higher than the circumferential speed of the roll, the squeezing effect by the cooling roll end face and the belt surface cleaning effect by the collision force of the molten metal discharge flow are increased, and the solidified shell is removed while it is still small. The problem caused by the solidified shell was solved by effectively separating it from the belt surface, introducing it into the molten metal, and melting it again.
この点、前掲した特開昭６０−２３４７４４号公報およ
び同５８−１８８５４８号公報ではいずれも、可動サイ
ドシールの移動速度を、鋳造速度すなわち冷却ロールの
最外周の速度（以下単にａ−ル周速という）と同一か、
またはサイドシールと冷却ロールの接触部における冷却
ロールの半径方向の平均速度と同一にして相対摺動量が
僅少となるように設定していたため、凝固殻を完全には
く離することはできず、それ故、とくに板厚の薄い薄帯
においてブレークアウトの発生を防止できなかったもの
と考えられる。In this regard, in both Japanese Patent Application Laid-open Nos. 60-234744 and 58-188548 mentioned above, the moving speed of the movable side seal is defined as the casting speed, that is, the speed of the outermost circumference of the cooling roll (hereinafter simply referred to as the a-roll circumferential speed). ) is the same as
Or, because the relative sliding amount was set to be the same as the average speed in the radial direction of the cooling roll at the contact area between the side seal and the cooling roll, the solidified shell could not be completely peeled off. It is thought that the occurrence of breakout could not be prevented, especially in thin ribbons.
上述したとおり、ベルトの移動速度が、ロール周速と同
一か小さい場合には、所期した効果が期待できないので
、ベルトの移動速度はリール周速よりも速くする必要が
ある１、シかしながら移動速度があまりに大きくなると
、ベルトの蛇行や変形のおそれが生じるので、ロール周
速の１８２倍以内とする必要がある、
かくしてサイドシールベルト七りこおけろ凝固殻の生成
に起因した問題は有利に解決されるけれども、双ロール
法においては上記の問題とは別に、溶湯がロール端面と
ベルト間の隙間に浸入するいわゆる湯差しが生じ易いと
いう問題がある。As mentioned above, if the moving speed of the belt is the same as or smaller than the circumferential speed of the roll, the desired effect cannot be expected, so the moving speed of the belt needs to be faster than the circumferential speed of the reel1. However, if the moving speed becomes too large, there is a risk of meandering or deformation of the belt, so it must be kept within 182 times the circumferential speed of the roll.Thus, problems caused by the formation of solidified shells on the side seal belt can be avoided. However, in addition to the above-mentioned problem, the twin roll method also has the problem that molten metal easily enters the gap between the end face of the roll and the belt, which is a so-called pouring.
しかしながらこの点については、この発明では、ヘルド
に高い張力を付加することによって解決した。However, in the present invention, this problem has been solved by applying high tension to the heald.
すなわち高張力付与状態下で可動サイドシールベルトを
駆動したところ、湯差しの発生がほぼ完全に回避された
のである。In other words, when the movable side seal belt was driven under high tension, the occurrence of hot water was almost completely avoided.
上記の目的を達成するためには、ベルトに対する付加張
力は、ベルトの耐力の少なくとも６０％は必要である。To achieve the above objective, the additional tension on the belt must be at least 60% of the belt's yield strength.
というのは付加張力が６０％に満たないと、ベルトが緩
んで湯差しの発生が免れ得ないからである。一方、ベル
トは６００〜８００℃程度の高温で使用されるものであ
るから、付加張力があまりに高いとベルトの変形や切れ
といったトラブルが生じる。従って、付加張力の上限は
ベルトの耐力の８０％以下とする。This is because if the added tension is less than 60%, the belt will become loose and the occurrence of hot water spills will inevitably occur. On the other hand, since the belt is used at a high temperature of about 600 to 800°C, if the added tension is too high, problems such as deformation and breakage of the belt will occur. Therefore, the upper limit of the additional tension is set to 80% or less of the proof strength of the belt.
第１図に、この発明の実施に用いて好適な可動サイドシ
ールベルトの駆動機構をそなえる双ロール式急冷薄帯製
造装置を模式で示す。なおこの装置は左右対称形である
ので代表して右側半分だけを示す。FIG. 1 schematically shows a twin-roll quenched ribbon manufacturing apparatus equipped with a movable side seal belt drive mechanism suitable for use in carrying out the present invention. Since this device is bilaterally symmetrical, only the right half is shown as a representative.
図中番号１１は該ベル目Ｏの冷却を兼ねた固定押付プレ
ート、１２はベルト保持用のアイドルロール、１３はデ
ィフレクタ−ロール、１４は蛇行防止用のピンチロール
、モして１５が張力付加ロールである。In the figure, number 11 is a fixed pressing plate that also serves to cool the bell O, 12 is an idle roll for holding the belt, 13 is a deflector roll, 14 is a pinch roll to prevent meandering, and 15 is a tension adding roll. It is.
さて固定押付ブレー口１はシリンダー（図示省略）によ
って可動式サイドシールベルト（材質５Ｓ４Ｌ Ｃｕ−
Ｃｒなど）８をロール両端面に押しつけるが、この固定
押付プレート１１の表面には、第７図に示すように多数
のスリット穴１６が開孔されていて、エアー１７がこの
隙間より吹き出し、ベルトとの間にエアーギャップを生
威し、可動式サイドシールベルト８をロール両端面に押
しつけると同時に、該ベルトを冷却する。可動式サイド
シールベルト８は冷却ロールの上、下に設けられたアイ
ドルロール１２によって保持されベルトのロール両端面
への接触を確保している。ベルト８の張力は張力付加ロ
ール１５によって調整され、シリンダー（図示省略）の
引く力がベルト張力となる。また、この張力付加ロール
１５にはピンチロール１４が設けられ、スプリング（図
示省略）によって圧下調整してベルト８の反り、緩み、
蛇行などを調整する。Now, the fixed pressing brake port 1 is attached to a movable side seal belt (material: 5S4L Cu-
Cr, etc.) 8 is pressed against both end faces of the roll. On the surface of this fixed pressing plate 11, as shown in FIG. An air gap is created between the rollers and the movable side seal belt 8 to press it against both end surfaces of the roll and at the same time cool the belt. The movable side seal belt 8 is held by idle rolls 12 provided above and below the cooling roll to ensure contact of the belt with both end faces of the roll. The tension of the belt 8 is adjusted by a tension adding roll 15, and the pulling force of a cylinder (not shown) becomes the belt tension. The tension applying roll 15 is also provided with a pinch roll 14, which adjusts the pressure with a spring (not shown) to prevent warping or loosening of the belt 8.
Adjust meandering, etc.
またベルト１０の移動速度は可変モータ（図示省略）に
よって調整する。Further, the moving speed of the belt 10 is adjusted by a variable motor (not shown).
（実施例）
前掲第１図に示した双ロール式急冷薄帯製造装置を用い
、次の条件で金属薄帯を製造した。(Example) A metal ribbon was manufactured under the following conditions using the twin-roll quenched ribbon manufacturing apparatus shown in FIG. 1 above.
使用ロールは、外径＝５５０ＩＩＩ１１、胴長： ５０
０ｍｍの胴合金からなるロールスリーブをそなえる内部
冷水式のロールである。また短辺部材としては、銅製の
固定押付プレート及びＳＳ ４１製のサイドシールベル
トを配置した。The roll used is outer diameter = 550III11, body length: 50
This is an internal water-cooled roll equipped with a roll sleeve made of 0mm shell alloy. Further, as the short side members, a fixed pressing plate made of copper and a side seal belt made of SS41 were arranged.
なお比較のため、従来法に従い短辺押さえ無しの場合お
よびベルトの移動速度を周速と同一とした場合について
も調査した。For comparison, we also investigated cases in which the short side was not pressed according to the conventional method and in which the moving speed of the belt was the same as the peripheral speed.
・ロール周速： ５ ｖａｎｓ
・ロールキス部における圧下刃：ｌトン溶湯組成：５．
５％５ｉ−ＢａｌＦｅ
注湯速度： ６ ｋｇ／ｓ
ベルト速度： ６ ｍｉｓおよび５ｍ／ｓ （従来法
）張力： ３０ ｋｇ／ａｍ”
上記の条件下での鋳込みにおいて、この発明に従った場
合は、ヒートサイズ２トンの鋳込みでも湯洩れや凝固シ
ェル生成に起因するブレークアウトは全く生じなかった
。・Roll circumferential speed: 5 vans ・Reduction blade at roll kiss part: 1 ton Molten metal composition: 5.
5% 5i-BalFe Pouring speed: 6 kg/s Belt speed: 6 mis and 5 m/s (conventional method) Tension: 30 kg/am” When casting under the above conditions and according to the present invention, Even when casting with a heat size of 2 tons, no breakouts caused by leakage or solidified shell formation occurred.
また得られた薄帯の形状を第８図（ａ）に示す。Further, the shape of the obtained ribbon is shown in FIG. 8(a).
板幅はロール幅全幅にわたり、また板厚の分布も滑らか
で板厚偏差は±３％以内であった。The plate width spanned the entire width of the roll, and the plate thickness distribution was smooth, with a plate thickness deviation within ±3%.
一方、従来法により端面押えなしで作成した薄帯の形状
は中央が厚く、エツジ部が薄く、板幅もロール幅いっば
いではなくこの刃状となっていた（第８図（ｂ））。On the other hand, the shape of the ribbon produced by the conventional method without end pressing was thick in the center and thin at the edges, and the width of the ribbon was not the same as the roll width, but had a blade shape (FIG. 8(b)).
さらに固定押付は端辺プレートのみでは２００ｋｇヒー
トサイズ前後で湯ざしが仕じ端辺への凝固シェル発達に
よりブレークアウトが発生した（第８図（Ｃ））。Furthermore, when fixed pressing was performed only on the edge plate, a breakout occurred at around 200 kg heat size due to the development of a solidified shell on the edge (Fig. 8 (C)).
また、ベルトの移動速度を周速と同一にした場合ではヒ
ートサイズ２００ ｋｇ程度では湯ざしは少なく、板厚
分布もロール両端で厚いが、ヒートサイズを大きくする
とベルトとロール端面での湯ざしゃベルトへの凝固シェ
ル発達が生じ、２トンの鋳込みでブレークアウトが発生
した（第８図＠）。Furthermore, when the moving speed of the belt is the same as the circumferential speed, when the heat size is about 200 kg, there is little scalding and the plate thickness distribution is thick at both ends of the roll, but when the heat size is increased, the scalding occurs at the ends of the belt and roll. A solidified shell developed on the belt, and a breakout occurred after 2 tons of casting (Fig. 8 @).
（発明の効果）
かくしてこの発明によれば、双ロール法により急冷薄帯
を製造する場合において、湯洩れや凝固シェルの発生に
起因した弊害を効果的に回避することができ、従って長
時間の連続操業が実現され、さらには板厚偏差は３％以
下の優れた形状品質の製品板を容易に得ることができる
。(Effects of the Invention) Thus, according to the present invention, when producing a quenched ribbon by the twin roll method, it is possible to effectively avoid the disadvantages caused by leakage of hot water and the generation of a solidified shell, and therefore it is possible to avoid long-term production of quenched ribbons. Continuous operation is realized, and product plates with excellent shape quality and thickness deviation of 3% or less can be easily obtained.
第１図は、この発明の実施に用いて好適な可動サイドシ
ールベルトの駆動機構をそなえる双ロール式急冷薄帯製
造装置の模式図、
第２図は、双ロール式の急冷薄帯製造要領の説明図、
第３図ａ、ｂはそれぞれ、端面押えを有する双ロール式
急冷薄帯製造装置の正面図および平面図、第４図は、ポ
ーラス状耐火物をそなえる端面押えを有する双ロール式
急冷薄帯製造装置の模式図、第５図ａ、ｂはそれぞれ、
従来のベルト成端面押えを有する双ロール式急冷薄帯製
造装置の正面図および側面図、
第６図は、注湯ノズルからの吐出流の流れを示した図、
第７図は、固定押付プレートの模式図、第８図はａ、ｂ
、ｃおよびｄはそれぞれ、この発明法および従来法に従
って得られた急冷薄帯の板クラウンを示した図である。
■・・・溶融金属 ２・・・注湯ノズル３・
・・冷却ロール ４・・・急冷薄帯５・・・端
面押え ６・・・ポーラス状耐火物７・・・
不活性ガス ８・・・可動式サイドシールベルト９・・
・上昇流 １０・・・凝固殻１１・・・固
定押付プレート１２・・・アイドルロール１３・・・デ
ィフレククロール １４・・・ピンチロール１５・・・
張力付加ロール １６・・・スリット穴１７・・・
エアー
第１図
第２図
＠３図
ｌ５−−一張力イ寸刀ロロール
Ａ−Ａ視固
第４
図
第５図
（１）
（ｂ）
酊６
図
ア
＠７図Fig. 1 is a schematic diagram of a twin-roll type quenched ribbon manufacturing apparatus equipped with a movable side seal belt drive mechanism suitable for carrying out the present invention, and Fig. 2 is a schematic diagram of a twin-roll type quenched ribbon manufacturing procedure. Explanatory drawings, Figures 3a and 3b are respectively a front view and a plan view of a twin roll type quenched ribbon manufacturing apparatus having an end face holder, and Figure 4 is a twin roll type quenching apparatus having an end face holder provided with a porous refractory. Schematic diagrams of the ribbon manufacturing apparatus, FIGS. 5a and 5b, respectively,
Front and side views of a conventional twin-roll quenched ribbon manufacturing device with a belt termination surface presser, Figure 6 is a diagram showing the flow of the discharge stream from the pouring nozzle, and Figure 7 is a fixed press plate. Schematic diagram of Figure 8 is a, b
, c and d are views showing plate crowns of quenched ribbons obtained according to the method of this invention and the conventional method, respectively. ■... Molten metal 2... Pouring nozzle 3.
...Cooling roll 4...Quiet-quenched ribbon 5...End face presser 6...Porous refractory 7...
Inert gas 8...Movable side seal belt 9...
- Upward flow 10... Solidified shell 11... Fixed pressing plate 12... Idle roll 13... Deflection roll 14... Pinch roll 15...
Tension adding roll 16...Slit hole 17...
Air Fig. 1 Fig. 2 @ Fig. 3 l5--One tension A dimension sword Roll A-A visual fixation Fig. 4 Fig. 5 (1) (b) Drunk 6 Fig. A @ Fig. 7
Claims (1)
じく一対の端面押さえ部材とで形成する鋳造空間に、溶
融金属を連続的に供給し、急冷凝固させて金属薄帯を製
造するに当たり、該端面押さえ部材として可動式サイド
シー ルベルトを用い、該ベルトを、移動速度：ロール周速の
１．０倍超、１．２倍以下、付加張力：ベルトの耐力の
０．６〜０．８倍の条件下で移動させることを特徴とす
る急冷金属薄帯の製造方法。[Claims] 1. Molten metal is continuously supplied to a casting space formed by a pair of cooling rolls and a pair of end face pressing members disposed in contact with the end faces of the rolls, and is rapidly solidified to form a metal thin film. In manufacturing the belt, a movable side seal belt is used as the end face pressing member, and the belt is moved at a speed of more than 1.0 times but less than 1.2 times the circumferential speed of the roll, and an additional tension of 0 of the yield strength of the belt. A method for producing a quenched metal ribbon, characterized by moving the quenched metal ribbon under conditions of .6 to 0.8 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9045190A JPH03291137A (en) | 1990-04-06 | 1990-04-06 | Production of rapidly cooled metal strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9045190A JPH03291137A (en) | 1990-04-06 | 1990-04-06 | Production of rapidly cooled metal strip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03291137A true JPH03291137A (en) | 1991-12-20 |
Family
ID=13998986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9045190A Pending JPH03291137A (en) | 1990-04-06 | 1990-04-06 | Production of rapidly cooled metal strip |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03291137A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20210116609A (en) * | 2019-01-28 | 2021-09-27 | 노벨리스 인크. | Short Belt Side Dams for Twin Belt Casting Machines |
-
1990
- 1990-04-06 JP JP9045190A patent/JPH03291137A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20210116609A (en) * | 2019-01-28 | 2021-09-27 | 노벨리스 인크. | Short Belt Side Dams for Twin Belt Casting Machines |
| JP2022517935A (en) * | 2019-01-28 | 2022-03-11 | ノベリス・インコーポレイテッド | Short belt side dam for twin belt casting machine |
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