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JP2697465B2 - Continuous production method of thin plate - Google Patents

Continuous production method of thin plate

Info

Publication number
JP2697465B2
JP2697465B2 JP4071639A JP7163992A JP2697465B2 JP 2697465 B2 JP2697465 B2 JP 2697465B2 JP 4071639 A JP4071639 A JP 4071639A JP 7163992 A JP7163992 A JP 7163992A JP 2697465 B2 JP2697465 B2 JP 2697465B2
Authority
JP
Japan
Prior art keywords
roll
casting
slab
rolling
rolls
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
Application number
JP4071639A
Other languages
Japanese (ja)
Other versions
JPH06179051A (en
Inventor
雅三 古川
健男 涌井
直嗣 吉田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Application filed by Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP4071639A priority Critical patent/JP2697465B2/en
Publication of JPH06179051A publication Critical patent/JPH06179051A/en
Application granted granted Critical
Publication of JP2697465B2 publication Critical patent/JP2697465B2/en
Anticipated expiration legal-status Critical
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Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B1/00Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/46Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting
    • B21B1/463Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling metal immediately subsequent to continuous casting in a continuous process, i.e. the cast not being cut before rolling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B2201/00Special rolling modes
    • B21B2201/18Vertical rolling pass lines

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)
  • Continuous Casting (AREA)

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】本発明は、溶融金属から直接薄板
を連続的に製造する方法、詳述すれば、双ロール方式に
よる薄板の連続鋳造と圧延ロールとを組み合わせた薄板
の連続製造方法に関する。
The present invention relates to a method for continuously manufacturing a sheet directly from molten metal, if specifically, continuous production how the sheet which combines a rolling roll continuous casting of thin by twin roll method about the.

【0002】[0002]

【従来の技術】従来より、薄板連続製造装置としては、
単ロール方式や双ロール方式の連続鋳造装置が良く知ら
れている。図1に代表例を示す単ロール方式の装置で
は、取鍋10からの溶融金属12がタンディッシュ14に供給
され、このタンディッシュ14から溶融金属12が単ロール
からなる鋳造ロール16に注入され、鋳込が行われる。こ
の方式では鋳片18が圧下されないため、高温での割れ感
受性の高い合金、つまり凝固点近傍での強度・延性の低
い合金(例:インコネル合金)でも、比較的割れのない
鋳片の得られることが特徴の一つであるが、その反面自
由表面側の表面性状は悪く、鋳片形状も凹凸が大きいと
いった欠点を有している。
2. Description of the Related Art Conventionally, as a continuous thin plate manufacturing apparatus,
Single roll and twin roll continuous casting apparatuses are well known. In the apparatus of the single roll system shown in FIG. 1 as a typical example, molten metal 12 from a ladle 10 is supplied to a tundish 14, and from the tundish 14, the molten metal 12 is poured into a casting roll 16 composed of a single roll. Casting is performed. In this method, since the slab 18 is not reduced, even if the alloy is highly sensitive to cracking at high temperatures, that is, an alloy with low strength and ductility near the freezing point (eg, Inconel alloy), a slab that is relatively free of cracks can be obtained On the other hand, it has the disadvantage that the surface properties on the free surface side are poor and the slab shape has large irregularities.

【0003】一方、図2に代表例を示す双ロール方式の
装置では、一対のロールから構成される鋳造ロール20が
設けられており、取鍋10から直接に溶融金属12がこの鋳
造ロール20に注入される。凝固した鋳片18は下方から鋳
造ロール20を離脱する。双ロール方式では、鋳造ロール
20の両ロール表面から成長した凝固シェルが、ロールの
最小間隙部で圧着されるため、単ロール方式に比べ、鋳
片18の表面性状や鋳片形状は良好である。
On the other hand, in a twin-roll type apparatus shown in FIG. 2 as a typical example, a casting roll 20 composed of a pair of rolls is provided, and molten metal 12 is directly supplied from a ladle 10 to the casting roll 20. Injected. The solidified slab 18 separates the casting roll 20 from below. In the twin roll system, the casting roll
Since the solidified shells grown from the surfaces of the two rolls 20 are pressed at the minimum gap between the rolls, the surface properties and the shape of the cast slab 18 are better than those of the single roll system.

【0004】[0004]

【発明が解決しようとする課題】この種の連続鋳造法本
来の目的から、得られる鋳片を最終製品とするまでに施
される加工は軽微なため、鋳造された金属薄帯の表面性
状は製品に大きな影響を与える。そこで、現在その製造
法の主流は双ロール方式になりつつある。
From the original purpose of this type of continuous casting method, since the processing to be performed until the obtained slab is used as a final product is slight, the surface properties of the cast metal strip are not sufficient. Significantly affect the product. Then, the mainstream of the manufacturing method is now becoming a twin roll system.

【0005】ところが、この双ロール方式の場合、ブレ
ークアウトや鋳片割れ、破断を防ぐために、ロール最小
間隙やロール押し付け力を制御する必要があるが、注湯
による湯面変動や凝固シェル成長の不均一から、絶えず
それらに対応した適切なロール間隙やロール押し付け力
を付与するには高度な制御技術を必要とする。しばしば
過剰量、あるいは過少量の制御を行う結果になり、例え
ば、鋳片に過剰量の圧下量を与えるときなど、容易に鋳
片割れや破断が生じることになる。
However, in the case of the twin-roll system, it is necessary to control the minimum gap between the rolls and the pressing force of the rolls in order to prevent breakout, slab cracks, and breakage. To provide appropriate roll gap and roll pressing force corresponding to them uniformly and constantly, sophisticated control technology is required. This often results in an excessive amount or an excessively small amount of control. For example, when an excessive amount of reduction is applied to a slab, a slab crack or break easily occurs.

【0006】そこで、これまでにあっても、押し付け圧
力とロール最小間隙との制御を組み合わせた技術、ま
た、そのような制御を実現すべく鋳造速度やロール面へ
の溶湯接触長さを制御する技術が、多数開示されている
(例: 特開昭59−193740号、同59−215256号、特開平3
−66457 号) 。
Therefore, even in the past, a technique combining the control of the pressing pressure and the minimum gap of the roll, and the casting speed and the length of the molten metal contacting the roll surface are controlled to realize such control. Many techniques have been disclosed (eg, JP-A-59-193740, JP-A-59-215256, and
−66457).

【0007】しかし、このような従来技術も、特に高温
割れ感受性の高い合金の場合、鋳片割れや破断を効果的
に防止することはできない。例えば、インコネル合金(
商品名) 、インコロイ合金(商品名)のような高温割れ
感受性の高い合金では、SUS304鋼に代表される汎用ステ
ンレス鋼と異なり、凝固点近傍の広い範囲で強度と延性
の現出が遅く、鋳造ロールの最小間隙部での僅かな圧下
により鋳片表面に割れが発生し、また破断するといった
現象を起こしやすい。
However, even such a conventional technique cannot effectively prevent slab cracking or fracture, particularly in the case of an alloy having high susceptibility to hot cracking. For example, Inconel alloy (
Alloys with high susceptibility to high temperature cracking, such as Incoloy alloy (trade name), unlike general-purpose stainless steel represented by SUS304 steel, have a slow appearance of strength and ductility in a wide range near the solidification point. A slight reduction in the minimum gap causes cracks to occur on the slab surface, and also causes rupture.

【0008】図3は、インコネル625 、インコロイ800
、そしてSUS304の凝固点近傍での強度、絞りの値を示
す。SUS304の場合、速やかに強度、絞りが大きくなる
が、前二者の場合、その発現が遅れる。つまり、十分凝
固しないと機械的特性が十分でないため凝固シェルの段
階で割れ、破断が生じやすいのである。このように、鋳
片形状と表面品質からは、本来大きな圧下を付与したい
が、鋼種によってはそこに大きな制約を受ける場合が頻
繁に起こり得る。
FIG. 3 shows Inconel 625 and Incoloy 800.
, And the values of the strength and the reduction in the vicinity of the solidification point of SUS304. In the case of SUS304, the strength and the drawing increase rapidly, but in the case of the former two, the manifestation is delayed. That is, if the solidification is not sufficient, the mechanical properties are not sufficient, so that cracking and breakage are likely to occur at the stage of the solidification shell. As described above, a large reduction is originally desired from the viewpoint of the shape of the slab and the surface quality, but depending on the type of steel, there may be frequent cases where the steel is greatly restricted.

【0009】ここに、本発明の目的は、従来技術におけ
る上記問題点を解決するもので、これまで双ロール方式
の薄板連続鋳造装置では鋳造し難いと考えられていた、
高温割れ感受性の高い合金でも、表面割れの無い健全な
鋳片を連続して製造することのできる方法および装置を
提供することである。
[0009] Here, an object of the present invention is to solve the above-mentioned problems in the prior art, and it has been considered that it is difficult to cast by a twin-roll type continuous sheet casting apparatus.
It is an object of the present invention to provide a method and an apparatus capable of continuously producing a sound slab without surface cracks even in an alloy having high susceptibility to hot cracking.

【0010】[0010]

【課題を解決するための手段】上記目的を達成するため
に、本発明者らは、種々研究・開発の結果、従来のよう
に鋳造ロールにおいて所定厚さに圧下するというのでは
なく、鋳込と圧下との機能を分離し、鋳込は従来のよう
に鋳造ロールで行い、圧下は下流に設けた圧延ロールで
行うという着想を得て、その実現性を確認して本発明を
完成した。
In order to achieve the above object, the present inventors have conducted various researches and developments. As a result, the present inventor has found that casting rolls are not rolled down to a predetermined thickness as in the prior art. With the idea that the functions of casting and rolling were separated, casting was performed by a casting roll as in the past, and rolling was performed by a rolling roll provided downstream, the feasibility was confirmed, and the present invention was completed.

【0011】ここに、本発明は、単ロールまたは双ロー
ルから構成される鋳造ロールに溶融金属を注湯、表面よ
り凝固シェルを生成せしめ、得られる鋳片に圧下力を実
質上負荷せずに、該鋳造ロールより鋳片を離脱させ、引
き続き平行に配置された1対のロールの1組または複数
組から構成される圧延ロールで前記鋳片を所定の板厚ま
で圧下することを特徴とする薄板連続鋳造方法である。
Here, the present invention is directed to a method of pouring a molten metal into a casting roll composed of a single roll or twin rolls, forming a solidified shell from the surface, and applying substantially no rolling force to the obtained cast slab. The casting slab is separated from the casting roll, and the casting slab is rolled down to a predetermined thickness by a rolling roll composed of one or more sets of a pair of rolls arranged in parallel. It is a thin plate continuous casting method.

【0012】[0012]

【0013】本発明の好適態様によれば、前記鋳造ロー
ルと圧延ロールとの間に板厚計測装置および冷却ゾーン
を設けてもよい。ここに、「薄板」とは一般的に1〜2
mm程度であるが、本発明にあっては1〜3mm程度まで製
造できる。
According to a preferred embodiment of the present invention, a thickness measuring device and a cooling zone may be provided between the casting roll and the rolling roll. Here, the term “thin plate” generally means 1-2
Although it is about mm, in the present invention, it can be manufactured up to about 1 to 3 mm.

【0014】このように、本発明によれば、鋳造するた
めのロールと圧延するためのロールを完全に分離させ、
該鋳造ロールは鋳片がロールより離脱するまでの間、鋳
片に圧下力を負荷しないか、もしくは圧下しても極軽微
な範囲に納まるよう、または鋳片に負荷される荷重があ
る一定値以下になるよう荷重制御するのであって、鋳造
ロールには鋳造条件の変化に対応した複雑な制御は必要
とせず、高温割れ感受性の高い合金でも健全な薄帯が得
られる。
Thus, according to the present invention, the roll for casting and the roll for rolling are completely separated,
The casting roll does not apply a rolling force to the slab until the slab separates from the roll, or is kept within a very small range even if the slab is reduced, or a certain load is applied to the slab. The load is controlled as follows. The casting roll does not require complicated control corresponding to the change in casting conditions, and a sound ribbon can be obtained even with an alloy having high susceptibility to hot cracking.

【0015】[0015]

【作用】次に、本発明の作用について添付図面を参照し
ながらさらに詳述する。図4は、本発明にかかる薄板連
続製造装置の概略説明図であって、図中、その装置は、
鋳造ロール30とそれに続く1対の圧延ロール32を備えて
いる。
Next, the operation of the present invention will be described in more detail with reference to the accompanying drawings. FIG. 4 is a schematic explanatory view of a continuous sheet manufacturing apparatus according to the present invention, in which the apparatus is:
It comprises a casting roll 30 followed by a pair of rolling rolls 32.

【0016】図示装置では、鋳造ロール30が平行に配置
された1対のロールから構成され、圧延ロール32が1組
のロール対から構成された場合である。鋳造ロール30に
はロードセル34と油圧シリンダー36とが組込まれてお
り、鋳造ロールの最小間隙の調整機構40は、これらのロ
ードセル34と油圧シリンダ36とから構成される。ここ
に、本発明におけるこの調整機構40の機能・操作は次の
通りである。
In the illustrated apparatus, the casting roll 30 is constituted by a pair of rolls arranged in parallel, and the rolling roll 32 is constituted by a set of roll pairs. A load cell 34 and a hydraulic cylinder 36 are incorporated in the casting roll 30, and a minimum gap adjusting mechanism 40 of the casting roll is composed of the load cell 34 and the hydraulic cylinder 36. Here, the function and operation of the adjusting mechanism 40 in the present invention are as follows.

【0017】鋳造前に予め狙い荷重を、例えば1kg/mm2
というように決めて制御装置41で設定しておく。鋳造を
開始してロードセル34により荷重を検出しながら、設定
値(1kg/mm2) に納まるように、油圧シリンダー36でロー
ル開度が開閉される。ここで本発明の目的上、設定値は
ゼロとすることが好ましいが、設定値がゼロであると限
りなくロールが開いてしまい制御できない。よって、制
御できる範囲内で極力小さい値とする。すなわち、本発
明がいう「圧下力を実質上負荷」しない状態とするので
ある。
Before casting, the target load is set to, for example, 1 kg / mm 2
Is set in the control device 41. While the casting is started, the load is detected by the load cell 34, and the roll opening is opened and closed by the hydraulic cylinder 36 so as to fall within the set value (1 kg / mm 2 ). Here, for the purpose of the present invention, the set value is preferably set to zero. However, if the set value is zero, the roll is opened without limit and cannot be controlled. Therefore, the value is set as small as possible within the controllable range. That is, the state in which "the rolling force is not substantially loaded" according to the present invention is set.

【0018】したがって、この調整機構40によって鋳造
ロール30において鋳片に負荷される荷重がある一定値以
下になるように、容易に制御できる。図示装置にあって
は、鋳造ロール30と圧延ロール32との間に板厚計測装置
42および冷却装置44が設けられている。板厚計測装置42
からのデータに基づいて制御装置46からは指令が出さ
れ、圧延ロール32に設けられた油圧シリンダ50によって
圧延時の圧下量が制御される。
Therefore, it is possible to easily control the load applied to the slab on the casting roll 30 by the adjusting mechanism 40 so that the load becomes a certain value or less. In the illustrated device, a thickness measuring device is provided between the casting roll 30 and the rolling roll 32.
42 and a cooling device 44 are provided. Plate thickness measuring device 42
A command is issued from the control device 46 on the basis of the data from, and the reduction amount during rolling is controlled by the hydraulic cylinder 50 provided on the rolling roll 32.

【0019】次に、この装置によって溶融金属を連続鋳
造して薄板を連続製造する操作について説明する。取鍋
10に収容された溶融金属12は鋳造ロール30間に注湯さ
れ、1対の鋳造ロール30の回転に同期して、両ロール表
面からは凝固シェルが成長し、ロールの最小間隙部から
鋳片18となって送り出される。
Next, an operation for continuously producing a thin plate by continuously casting molten metal by this apparatus will be described. Ladle
The molten metal 12 accommodated in 10 is poured between the casting rolls 30, and in synchronization with the rotation of the pair of casting rolls 30, solidified shells grow from the surfaces of both rolls, and slabs are cast from the minimum gap between the rolls. It is sent out as 18.

【0020】このとき、湯面変動または凝固シェル成長
の不均一により、凝固シェルの厚みは変動するが、本発
明によれば、調整機構40によって、ロール最小間隙部で
発生するロール離反力がゼロ、あるいは鋼種によりある
一定値になるようロール最小間隙を変動させる。すなわ
ち、実質上鋳片に負荷がかからない状態で鋳造ロールか
ら離脱する。
At this time, the thickness of the solidified shell fluctuates due to fluctuations in the molten metal surface or uneven growth of the solidified shell. However, according to the present invention, the adjusting mechanism 40 reduces the roll separation force generated in the minimum roll gap to zero. Alternatively, the minimum roll gap is varied to a certain value depending on the type of steel. That is, the slab is separated from the casting roll in a state where a load is not substantially applied to the slab.

【0021】よって、鋳造ロール30より搬出される鋳片
18の厚みは一定せず変化している。そこで、次に、この
鋳片18を強度・延性の現出し始める温度まで冷却装置44
で冷却し、続く圧延ロール32で所定の板厚まで圧延加工
することにより、最終的に健全な金属薄帯を得る。冷却
装置44はいくつかの水スプレーを備えたものである。な
お、鋳片の冷却は空冷または水冷で行えばよく、特に制
限はない。
Therefore, the slab carried out from the casting roll 30
The thickness of 18 is not constant and varies. Therefore, the cooling device 44 is then cooled to a temperature at which the slab 18 begins to exhibit strength and ductility.
Then, the roll is rolled to a predetermined thickness by the subsequent rolling roll 32 to finally obtain a sound metal ribbon. The cooling device 44 is equipped with several water sprays. The slab may be cooled by air or water, and is not particularly limited.

【0022】これらの一連の工程のなかで、圧延ロール
32での圧延圧力を一定にすべく、鋳造ロール30と圧延ロ
ール32との間に非接触式の板厚測定装置42を挿入し、板
厚変動により制御装置46からの指令によってシリンダー
50を駆動し、圧延ロール32の圧下力を制御しても良い。
In these series of steps, a rolling roll
In order to keep the rolling pressure at 32 constant, a non-contact type thickness measuring device 42 is inserted between the casting roll 30 and the rolling roll 32, and the cylinder thickness is changed by a command from the control device 46 due to the thickness variation.
The rolling force of the rolling roll 32 may be controlled by driving the roll 50.

【0023】図5は、横向きの鋳造法を採用する場合の
変更例を示すもので、図中、一対のロール60、60から構
成される鋳造ロール62にはタンディッシュ64から溶融金
属が注入され、単ロール方式と同様にして横方向に鋳片
18が離脱してゆき、圧延ロール66に至る。
FIG. 5 shows a modified example in which a horizontal casting method is employed. In the drawing, a molten metal is injected from a tundish 64 into a casting roll 62 composed of a pair of rolls 60, 60. , Cast slabs in the horizontal direction in the same manner as in the single roll system
18 comes off and reaches the rolling roll 66.

【0024】[0024]

【0025】このように、本発明によれば、鋳造ロール
および鋳造法は上向きでも、横向きでも可能である。鋳
造ロールおよび圧延ロールは、通常の油圧シリンダまた
はスクリュー方式で駆動すればよい。さらに圧延ロール
は2段だけでなく、多段あるいはタンデムでもよい。
Thus, according to the present invention, the casting roll and casting method can be upward or sideways . The casting roll and the rolling roll may be driven by a normal hydraulic cylinder or screw system. Further, the number of rolling rolls is not limited to two, but may be multiple or tandem.

【0026】圧延ロールでの板厚制御は、上述のような
圧延前の鋳片厚さおよび鋳造ロール開度によるフィード
フォアードあるいは圧下後の鋳片厚さによるフィードバ
ックが適用可能である。次に、実施例によって本発明の
作用、効果についてより具体的に説明する。
As for the control of the thickness of the rolling rolls, the feedforward by the slab thickness before rolling and the opening degree of the casting roll as described above or the feedback by the slab thickness after rolling down can be applied. Next, the operation and effect of the present invention will be described more specifically with reference to examples.

【0027】[0027]

【実施例】本例では図4に示す装置を使用してインコロ
イ合金の連続鋳造試験を行った。鋳造ロールはロール径
300mm 、幅200mm の一対のロールから構成し、この鋳造
ロールの出側後方に、冷却装置とロール径150mm から成
る圧延ロールを配した。
EXAMPLE In this example, a continuous casting test of Incoloy alloy was performed using the apparatus shown in FIG. Casting roll has roll diameter
A pair of rolls having a width of 300 mm and a width of 200 mm was provided. A cooling device and a roll having a roll diameter of 150 mm were arranged behind the casting roll.

【0028】30m/minで回転する鋳造ロールに取鍋また
はタンディッシュから溶鋼を注湯し板厚2mmの鋳片を鋳
造する際、鋳片に負荷される圧延荷重が極力ゼロに近づ
くよう設置したロードセルの荷重が1kg/mm2以下になる
ように、油圧シリンダーでロール開度を制御しながら鋳
造する。よって、ここで得られる鋳片厚は1.2mm から2.
8mm 程度の範囲でばらついている。
When casting molten steel from a ladle or tundish into a casting roll rotating at 30 m / min to cast a slab having a thickness of 2 mm, the rolling load applied to the slab was set as close to zero as possible. Casting is performed while controlling the roll opening with a hydraulic cylinder so that the load of the load cell is 1 kg / mm 2 or less. Therefore, the slab thickness obtained here is from 1.2 mm to 2.
It varies in the range of about 8mm.

【0029】鋳造ロールから搬出された上記鋳片は、鋼
種により図3に示す、強度および延性( 絞り) の回復温
度以下になるまで十分冷却( 例えばインコロイ800 で
は、凝固終了温度より−150 ℃) された後、続く圧下ロ
ールで圧延された所定の板厚(例えば1mm) になる。こ
のとき、鋳造ロールから搬出された鋳片厚を測定または
ロール開度を一時記憶し、その鋳片厚さおよびロール開
度に見合った圧下量を続く圧延ロールで制御することに
より、均一な板厚の金属薄帯が得られる。
The slab discharged from the casting roll is sufficiently cooled until the strength and ductility (drawing) recover below the recovery temperature of strength and ductility (drawing) shown in FIG. 3 depending on the type of steel. After being rolled, the sheet has a predetermined thickness (for example, 1 mm) rolled by a subsequent reduction roll. At this time, by measuring the thickness of the slab carried out from the casting roll or temporarily storing the roll opening, and controlling the amount of reduction corresponding to the slab thickness and the roll opening with the subsequent rolling roll, a uniform plate is obtained. A thick metal ribbon is obtained.

【0030】以上の操作によって得られる鋳片は、凝固
点直下の強度および延性がないか、または低い温度域(
脆化域) での圧下をうけないため、表面割れなどの欠陥
がなく、健全である。
The slab obtained by the above operation has no strength and ductility just below the freezing point, or has a low temperature range (
Since it is not subjected to reduction in the embrittlement zone), it is sound without defects such as surface cracks.

【0031】[0031]

【発明の効果】以上の述べた如く本発明によれば、高温
割れ感受性が高いために、1対のロールだけでは直接健
全な薄板を製造することの難しい材料でも、容易に健全
な金属薄帯を得ることができる。
As described above, according to the present invention, even if it is difficult to directly produce a healthy thin plate with only a pair of rolls, it is possible to easily produce a sound metallic strip because of its high susceptibility to hot cracking. Can be obtained.

【図面の簡単な説明】[Brief description of the drawings]

【図1】従来の単ロール方式の薄板連続鋳造装置の概略
説明図である。
FIG. 1 is a schematic explanatory view of a conventional single-roll type continuous sheet casting apparatus.

【図2】従来の双ロール方式の薄板連続鋳造装置の概略
説明図である。
FIG. 2 is a schematic explanatory view of a conventional twin-roll type continuous sheet casting apparatus.

【図3】いくつかの合金の凝固点近傍の強度と絞りを示
すグラフである。
FIG. 3 is a graph showing strength near the freezing point and reduction of some alloys.

【図4】本発明にかかる双ロール方式の薄板連続鋳造装
置の概略説明図である。
FIG. 4 is a schematic explanatory view of a twin-roll type continuous sheet casting apparatus according to the present invention.

【図5】本発明にかかる双ロール方式の薄板連続鋳造装
置の変更例の概略説明図である。
FIG. 5 is a schematic explanatory view of a modified example of a twin-roll type continuous sheet casting apparatus according to the present invention.

【符号の説明】[Explanation of symbols]

30 : 鋳造ロール 32 : 圧延ロール 34 : ロードセル 36 : 油圧シリンダー 40 : 調整機構 42 : 板厚計測装置 44 : 冷却装置 30: Casting roll 32: Rolling roll 34: Load cell 36: Hydraulic cylinder 40: Adjustment mechanism 42: Thickness measuring device 44: Cooling device

フロントページの続き (56)参考文献 特開 昭63−281752(JP,A) 特開 平4−55012(JP,A) 実開 昭64−5742(JP,U) 特公 平3−69616(JP,B2) 特公 昭59−10846(JP,B2)Continuation of the front page (56) References JP-A-63-281752 (JP, A) JP-A-4-55012 (JP, A) JP-A-64-5742 (JP, U) JP-B-3-69616 (JP) , B2) Tokiko Sho 59-10846 (JP, B2)

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 高温割れ感受性の高い合金薄板の連続製
造方法であって、双ロールから構成される鋳造ロールに
溶融金属を注湯、表面より凝固シェルを形成せしめ、得
られる鋳片に実質上圧下力を負荷せずに鋳造した後、該
鋳造ロールから離脱させ、引き続き平行に配置された
なくとも1対のロールから構成される圧延ロールにより
前記鋳片を鋳片の強度および延性回復温度以下におい
て、所定の板厚まで圧下することを特徴とする薄板
続製造方法。
(1) Continuous production of an alloy sheet having high susceptibility to hot cracking.
A molten metal is poured into a casting roll composed of twin rolls, a solidified shell is formed from the surface, and the resulting slab is cast without applying a substantial rolling force. It is disengaged from and continue parallel to small
Without even a pair of the roll that consists of rolling rolls <br/> the slab of the slab strength and ductility recovery temperature less odor
Te, communicating <br/> connection method of manufacturing a thin plate, characterized by rolling to a predetermined thickness.
JP4071639A 1992-03-27 1992-03-27 Continuous production method of thin plate Expired - Fee Related JP2697465B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4071639A JP2697465B2 (en) 1992-03-27 1992-03-27 Continuous production method of thin plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4071639A JP2697465B2 (en) 1992-03-27 1992-03-27 Continuous production method of thin plate

Publications (2)

Publication Number Publication Date
JPH06179051A JPH06179051A (en) 1994-06-28
JP2697465B2 true JP2697465B2 (en) 1998-01-14

Family

ID=13466419

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4071639A Expired - Fee Related JP2697465B2 (en) 1992-03-27 1992-03-27 Continuous production method of thin plate

Country Status (1)

Country Link
JP (1) JP2697465B2 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPQ818000A0 (en) * 2000-06-15 2000-07-06 Bhp Steel (Jla) Pty Limited Strip casting
US7849722B2 (en) * 2006-03-08 2010-12-14 Nucor Corporation Method and plant for integrated monitoring and control of strip flatness and strip profile
CN109967704A (en) * 2019-05-10 2019-07-05 中冶赛迪重庆信息技术有限公司 A continuous casting and rolling device
CN112355259B (en) * 2020-11-09 2022-04-19 中铝材料应用研究院有限公司 Preparation device and preparation method for liquid continuous solidification forming of aluminum alloy sheet

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5910846A (en) * 1982-07-09 1984-01-20 Kobe Steel Ltd Eddy current flaw detector for metallic surface
JPS63281752A (en) * 1987-05-13 1988-11-18 O C C:Kk Method and apparatus for producing metal wire
JPS645742U (en) * 1987-06-26 1989-01-13
JP2837448B2 (en) * 1989-08-09 1998-12-16 田中貴金属工業株式会社 Hollow carbon fiber spinneret
JPH0455012A (en) * 1990-06-26 1992-02-21 Kawasaki Steel Corp Plate thickness control method for rolling mill

Also Published As

Publication number Publication date
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