JP3056252B2 - Method for producing rectangular thin slab and continuous casting apparatus - Google Patents
Method for producing rectangular thin slab and continuous casting apparatusInfo
- Publication number
- JP3056252B2 JP3056252B2 JP7519818A JP51981895A JP3056252B2 JP 3056252 B2 JP3056252 B2 JP 3056252B2 JP 7519818 A JP7519818 A JP 7519818A JP 51981895 A JP51981895 A JP 51981895A JP 3056252 B2 JP3056252 B2 JP 3056252B2
- Authority
- JP
- Japan
- Prior art keywords
- casting
- height
- thickness
- continuous
- cooling mold
- 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
- 238000009749 continuous casting Methods 0.000 title claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 238000005266 casting Methods 0.000 claims abstract description 52
- 239000000843 powder Substances 0.000 claims abstract description 17
- 238000007654 immersion Methods 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 14
- 229910052751 metal Inorganic materials 0.000 claims abstract description 14
- 239000002893 slag Substances 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000001816 cooling Methods 0.000 claims description 34
- 239000007788 liquid Substances 0.000 claims description 9
- 238000007598 dipping method Methods 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 238000007711 solidification Methods 0.000 claims description 3
- 230000008023 solidification Effects 0.000 claims description 3
- 230000005499 meniscus Effects 0.000 abstract description 4
- 238000005096 rolling process Methods 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 abstract description 3
- 239000010959 steel Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract 1
- 230000001419 dependent effect Effects 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000002245 particle Substances 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
- B22D11/14—Plants for continuous casting
-
- 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
- B22D11/10—Supplying or treating molten metal
- B22D11/11—Treating the molten metal
- B22D11/111—Treating the molten metal by using protecting powders
-
- 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
- B22D11/1206—Accessories for subsequent treating or working cast stock in situ for plastic shaping of strands
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
- Metal Rolling (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Heat Treatment Of Articles (AREA)
- Artificial Fish Reefs (AREA)
- Pinball Game Machines (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
Description
【発明の詳細な説明】 本発明は連続鋳造装置及び薄肉スラブ製造のための方
法に関する。The present invention relates to a continuous casting apparatus and a method for producing thin slabs.
例えばドイツ特許出願公開第DE 37 09 188 A1号公報
に開示されているように従来の技術から平たい浸漬出湯
口を使用することは公知である。更に、液圧駆動式持上
げテーブルが通常的であり、これは、鋳造最中にさえ正
弦振動から変位させることにより振動の行程高さ、周波
数及び形を変化させ最適に選択することを可能にする。
凝固の間に鋳造厚が、鋳造連続体の改善された内部品質
が得られるように減少される鋳造圧延装置が、ドイツ特
許出願公開第DE 38 18 077 A1号公報から公知である。It is known from the prior art to use a flat immersion tap, as disclosed, for example, in DE 37 09 188 A1. In addition, hydraulically driven lifting tables are common, which allows the stroke height, frequency and shape to be varied and optimally selected by displacing from sinusoidal vibration even during casting. .
DE 38 18 077 A1 discloses a casting mill in which the casting thickness during solidification is reduced in such a way that an improved internal quality of the casting continuum is obtained.
従来の技術を調べて分かった点は、薄肉連続鋳造スラ
ブを製造する目的は、複雑な問題の解決を必要とし、連
続鋳造装置全体について見て制御可能な変数の全体が非
常に大きくて、従って平均的専門家の知識ではまったく
充分でなく、多少とも適用可能な多数の解決法のうちか
ら可及的最小の労作で充分に良好な結果を得る解決法を
見つけることを平均的専門家に要求するのは無理である
点である。Examination of the prior art has shown that the purpose of producing thin continuous cast slabs requires the solution of complex problems, and the overall controllable variables of the entire continuous casting machine are very large, thus The knowledge of the average expert is not enough at all and requires the average expert to find a solution that gives good enough results with the least possible effort from a number of solutions that are more or less applicable It is impossible to do it.
本発明の課題は、スラグの供給及び鋳造連続体厚の減
少における最適な条件が既に鋳造圧延装置において、及
び冷却鋳型及び案内ロールスタンドにおいて得られるこ
とにより、薄肉スラブの前もって与えられている厚さを
実現することを可能にする方法及び連続鋳造装置を提供
することにある。The object of the present invention is to provide a pre-set thickness for thin-walled slabs, since the optimal conditions in the supply of slag and the reduction of the casting continuum thickness are already obtained in the casting mill and in the cooling mold and the guide roll stand. To provide a method and a continuous casting apparatus that make it possible to achieve the above.
上記課題は本発明により請求の範囲第１項及び第３項
の特徴部分に記載された特徴事項により解決される。有
利な実施の形態は副次請求項に記載されている。上記課
題の解決法は、例えば垂直冷却鋳型、垂直湾曲式冷却鋳
型又は円弧状の冷却鋳型のタイプに依存しない。The above object is achieved by the present invention by the features described in the characterizing parts of claims 1 and 3. Advantageous embodiments are set out in the subclaims. The solution to the above problem does not depend on, for example, the type of vertical cooling mold, vertical curved cooling mold or arc-shaped cooling mold.
本発明に係る薄肉スラブの製造方法は、 （態様１）− 矩形状に形成された振動する冷却鋳型の
中に、浸漬出湯口によって金属溶湯を鋳込み、該浸漬出
湯口と冷却鋳型が、完全凝固したスラブの鋳造連続体横
断面面積FST/浸漬出湯口の横断面面積FTA≦50の条件を
満たす段階と、 − スラグ高さをhSchlacke（４）とし、鋳型中にお
ける溶融金属の液面より上部の鋳造連続体外殻高さをh
Strangschale（３）とした場合に、hSchlacke（４）≧h
Strangschale（３）の条件が、冷却鋳型の振動高さ、振
動の形及び振動数に依存して保たれるように、鋳造粉末
を溶融金属に供給する段階と、 − 冷却鋳型の下方に配設されたマルチロール型ロー
ルスタンドの中で、多くの段階によって鋳造連続体の断
面積を減少させ、これにより、鋳造連続体の厚さを連続
的に減少させるのに平行して、まだ液状の鋳造連続体内
部に電磁的撹拌の作用に相応する強制的対流を発生させ
る段階と、 − マルチロール型ロールスタンドの出口において最
終厚さに到達する際に鋳造連続体内部でまだ２相領域が
存在するように凝固を行う段階と、 を含んでいる。The manufacturing method of the thin slab according to the present invention is as follows: (Aspect 1)-A molten metal is cast by a dipping spout into a vibrating cooling mold formed in a rectangular shape, and the dipping spout and the cooling mold are completely solidified. and satisfying stage of cross-sectional area F TA ≦ 50 of the continuous casting body cross-sectional area F ST / immersion nozzle of slabs, - slag height and h Schlacke (4), the level of molten metal in the mold The height of the outer shell of the casting body above the h
If Strangschale (3), h Schlacke (4) ≧ h
Feeding the casting powder to the molten metal such that the conditions of Strangschale (3) are maintained as a function of the vibration height, shape and frequency of the cooling mold; In a multi-roll type roll stand, the steps of reducing the cross-sectional area of the casting continuum by a number of steps, thereby simultaneously reducing the thickness of the casting continuum, and at the same time, Generating a forced convection in the continuum which corresponds to the action of electromagnetic stirring; and-a two-phase region still exists in the casting continuum when reaching the final thickness at the outlet of the multi-roll roll stand. Performing coagulation, and so on.
また、本発明の一態様は、 （態様２）鋳造の間でさえも、冷却鋳型の振動数、振動
の高さ及び振動の形状が自由に選択可能であることを特
徴とする上記（態様１）に記載の薄肉スラブの製造方法
である。Further, one aspect of the present invention is: (Aspect 2) The above-mentioned (Aspect 1), wherein the frequency, height and shape of the vibration of the cooling mold can be freely selected even during casting. )).
更に、本発明は、 （態様３）浸漬出湯口と、鋳造粉末供給装置と、マルチ
ロールスタンド（25）とを備えた連続鋳造装置であっ
て、 − 上記浸漬出湯口は、その横断面面積FTAが完全凝
固したスラブの鋳造連続体横断面面積FSTの1/50以上で
あり、矩形状に形成された振動する冷却鋳型の内部に突
出し、該冷却鋳型は、振動数、振動の高さ及び振動の形
状を自由に調整できる振動装置に接続されており、 − 上記鋳造粉末供給装置は、振動の高さ、振動の形
状及び振動数に依存して、スラグ高さhSchlacke（４）
≧鋳型中における溶融金属の液面より上部の鋳造連続体
外殻高さhStrangschale（３）の条件が維持されるよう
に鋳造粉末を供給し、 − 上記マルチロールスタンド（25）は、冷却鋳型か
ら引き出される方向に配設されて連続的に鋳造連続体の
厚さを減少させる、上記（態様１）又は（態様２）に記
載の薄肉スラブの製造方法を実施するための連続鋳造装
置である。Furthermore, the present invention provides (3) a continuous casting apparatus including an immersion tap, a casting powder supply device, and a multi-roll stand (25), wherein the immersion tap has a cross-sectional area F TA is not less completely solidified slab continuous casting body cross section 1/50 of the area F ST of projecting into the interior of the cooling mold to vibration is formed in a rectangular shape, the cooling mold is frequency, the height of the vibration And connected to a vibrating device capable of freely adjusting the shape of the vibration, wherein the casting powder feeder has a slag height h Schlacke (4), depending on the height of the vibration, the shape and frequency of the vibration.
≧ The casting powder is supplied so that the condition of the casting continuum shell height h Strangschale (3) above the liquid level of the molten metal in the mold is maintained; -the multi-roll stand (25) is A continuous casting apparatus for carrying out the method for producing a thin slab according to the above (Aspect 1) or (Aspect 2), which is disposed in a drawing direction and continuously reduces the thickness of a continuous cast body.
なお、本発明の別の態様に係る連続鋳造装置は、 （態様４）予め決められた鋳造連続体の厚さの減少量が
得られる程度に、鋳造連続体内部の未だ液状の部位にお
ける撹拌作用が得られるように、対向する２つのロール
の間隔が選択されることを特徴とする上記（態様３）に
記載の連続鋳造装置である。In addition, the continuous casting apparatus according to another aspect of the present invention includes: (Aspect 4) A stirring action in a still liquid portion inside the continuous casting body to such an extent that a predetermined reduction in thickness of the continuous casting body is obtained. The continuous casting apparatus according to the above (Aspect 3), wherein an interval between two opposing rolls is selected so as to obtain the following.
図は、以下の本発明の例示的な説明の理解のために用
いられる。The figures are used for an understanding of the following exemplary description of the invention.
第１図は冷却鋳型の鋳造条件を示し、 第２図は200mm厚さ×10mm幅のスラブについて、同一
の表面品質及び鋳造性能についてのスラブ厚さに依存す
る技術的労作を示し、 第3.1図〜第3.3図は200mm厚×100mm幅のスラブについ
て、同一の表面品質及びスラブ厚さについての鋳造速度
に依存する技術的労作を示し、 第４図は200mm厚×100mm幅のスラブについて、冷却鋳
型の中の鋼の、スラブ厚さに依存する液圧的挙動を示
し、 第５図は連続鋳造装置を示す。Fig. 1 shows the casting conditions of the cooling mold, Fig. 2 shows the technical effort depending on the slab thickness for the same surface quality and casting performance for a slab 200mm thick x 10mm wide, Fig. 3.1 Figure 3.3 shows the technical effort depending on the casting speed for the same surface quality and slab thickness for a slab 200mm thick x 100mm width, Figure 4 shows the cooling mold for a slab 200mm thick x 100mm width 5 shows the hydraulic behavior of the steel in the slab depending on the slab thickness, and FIG. 5 shows a continuous casting apparatus.
本発明を実現する範囲内で行われた試験により、鋳造
連続体の表面品質は実質的にスラグ供給に依存すること
が分かった。これには、メニスカス、すなわちスラグ高
さ（hSchlacke）と、冷却鋳型（例えば金型、黒鉛型
等）をはね上げる際に溶湯から出てくる鋳造連続体外殻
高さ（hStrangschale）との共働作用が責を負う（第１
図）。Tests performed within the scope of implementing the present invention have shown that the surface quality of the cast continuum is substantially dependent on the slag supply. This includes the meniscus, or slag height (h Schlacke ), and the cast continuous shell height (h Strangschale ) that emerges from the melt when the cooling mold (eg, mold, graphite mold, etc.) is flipped up. Synergy is responsible (1st.
Figure).
潤滑が最適であり表面欠陥（鋳造連続体表面の直下
の、主に酸化物の形の鋳造粉末粒子）が回避されるため
には次式の基準が満足されなければならないことが分か
った。It has been found that the following criterion must be satisfied for optimal lubrication and to avoid surface defects (cast powder particles, mainly in the form of oxides, directly below the surface of the casting continuum).
（１） hSchlacke≧hStrangschale スラグ高さhSchlackeは主に冷却鋳型入口横断面の厚
さに依存し、鋳造連続体外殻高さhStrangschaleは主
に、振動する冷却鋳型の引上げ高さに依存する。(1) h Schlacke ≧ h Strangschale slag height h Schlacke mainly depends on cooling mold inlet cross section thickness, casting continuous shell height h Strangschale mainly depends on vibrating cooling mold pulling height I do.
hSchlackeの大きさと、このものの冷却鋳型入口横断
面の厚さへの依存性とを考えると、この系に持込まなけ
ればならない技術的煩労とも呼ぶことができる下記式の
関係は予期しないことに下にあげる結果を示す。 Given the size of h Schlacke and its dependence on the thickness of the cooling mold inlet cross-section, the relationship of the following equation, which can also be referred to as the technical burden that must be brought into the system, is unexpected: The results shown below are shown.
（２） ハンディキャップ＝製造された鋳造連続体表
面積／溶湯表面積 （単位はm2/min×1/m2） 前もって与えている鋳造性能すなわち2.736t/minにお
いて、通常の200mmスラブを50mmスラブと比較し、そし
てこれを200mmスラブについて式（２）において１とす
ると、この値は第２図より見られるように50mmスラブに
ついては16.62に上昇する。すなわち式（２）は、鋳造
連続体厚さの減少に逆比例して増加し、その際その依存
性は指数曲線をたどる。(2) Handicap = manufactured casting continuous body surface area / molten metal surface area (unit: m 2 / min × 1 / m 2 ) At a casting performance given in advance, ie 2.736 t / min, a normal 200 mm slab is replaced with a 50 mm slab. By comparison, and assuming this to be 1 in equation (2) for a 200 mm slab, this value rises to 16.62 for a 50 mm slab as can be seen from FIG. That is, equation (2) increases in inverse proportion to the decrease in casting continuum thickness, the dependence of which follows an exponential curve.
これに対して、75/100及び125mm冷却鋳型について第
３図に示されているように、鋳造厚さが定められている
場合に式（２）が、鋳造速度を高めるにつれてどのよう
に変化するかを考えるならばこれは、小さい勾配の直線
でリニアにのみ増加することが確認される。On the other hand, as shown in FIG. 3 for 75/100 and 125 mm cooling molds, equation (2) changes as the casting speed is increased for a given casting thickness. Considering this, it is confirmed that this increases only linearly with a straight line having a small gradient.
式（１）に多大の影響を与えるのが、溶融金属が冷却
鋳型の中に流入することにより発生する乱流であり、こ
の乱流はしばしば、溶湯液面まで継続し、波動となるこ
とがあり、その際、波の山はスラグ液面を越えて高まる
ことがあり、これにより潤滑における中断が生じる。こ
の乱流はとりわけ、生産量と、浸漬出湯口横断面におけ
る冷却鋳型の厚さと幅とに依存する。乱流の尺度とし
て、生産量と厚さとの商としての液圧的挙動が定義さ
れ、そして次式により表される。What greatly affects equation (1) is the turbulence generated by the flow of the molten metal into the cooling mold, and this turbulence often continues up to the liquid surface of the molten metal and becomes a wave. Yes, then the peak of the wave may rise above the slag level, which causes an interruption in lubrication. This turbulence is dependent, inter alia, on the production volume and the thickness and width of the cooling mold in the immersion tap cross section. As a measure of turbulence, the hydraulic behavior as the quotient of production and thickness is defined and is given by:
（３） 液圧挙動＝生産量（単独はt/min）／厚さ
（単位はmm） 200mmの厚さのスラブについての液圧挙動の値が、例
えば第４図から見ることができる。冷却鋳型厚さが大き
くなるにつれて液圧挙動が大幅に良好になることが分か
る。(3) Hydraulic behavior = Production amount (t / min alone) / Thickness (unit: mm) The value of the hydraulic behavior for a slab having a thickness of 200 mm can be seen, for example, from FIG. It can be seen that the hydraulic behavior becomes significantly better as the cooling mold thickness increases.
下記式の関係も乱流に関して重要である。 The following relationship is also important for turbulence:
（４） FST/FTA≦50 ただし、 FST＝完全凝固したスラブの鋳造連続体横断面面積、F
TA＝浸漬出湯口の横断面面積 更に、冷却鋳型領域内での電磁的ブレーキが、鋳造液
面領域における乱流を大幅に低減できる。(4) F ST / F TA ≤50, where F ST = cross-sectional area of cast continuous slab of fully solidified slab, F
TA = cross-sectional area of the immersion taphole Further, the electromagnetic brake in the cooling mold area can greatly reduce the turbulence in the casting liquid level area.
以上に説明され測定により実証された各式から、冷却
鋳型の中のスラブ厚さを選択する際に例えば100mmから5
0mmに減少すると、式（１）の関係を守る際の問題が大
幅に大きくなる。すなわち、溶融金属を供給することが
困難となる外に、小さい冷却鋳型横断面積に充分な鋳造
粉末を被着させて生じる鋳造連続体の大表面を潤滑し、
更に式（４）の関係を設定することが殆ど不可能にな
る。これに対して、例えば冷却鋳型における、また従っ
て鋳造液面における75mmの鋳造連続体厚さにおける鋳造
速度は、特別の付加労作無しに高めることができる。こ
れは、薄肉スラブ鋳造の領域内でスラブ厚さを冷却鋳型
から凝固末端（溶湯部最下位置）まで一定に保持するこ
とは有意義ではなくて、スラブ厚さを鋳造圧延装置を用
いて減少させて、圧延機に供給される際のスラブ厚さに
到達する方が技術的に大幅に簡単であると言う驚くべき
解決手段に導くが、このためには例えば挟みセグメント
として形成されたマルチロール型ロールスタンド（セグ
メント０）が有利であることが示されている。From the equations described above and verified by measurement, when selecting the slab thickness in the cooling mold, for example, 100 mm to 5 mm
When the distance is reduced to 0 mm, the problem in maintaining the relationship of the equation (1) becomes significantly large. That is, besides making it difficult to supply molten metal, lubricating the large surface of the continuous cast body produced by applying sufficient casting powder to a small cooling mold cross-sectional area,
Furthermore, it is almost impossible to set the relationship of equation (4). In contrast, for example, the casting speed at a casting continuum thickness of 75 mm at the cooling mold and thus at the casting level can be increased without special additional effort. It does not make sense to keep the slab thickness constant from the cooling mold to the solidification end (the lowest position of the molten metal part) in the area of thin-wall slab casting. This leads to the surprising solution that reaching the slab thickness as it is fed to the rolling mill is technically much easier, but for this purpose, for example, a multi-roll type formed as a sandwich segment A roll stand (segment 0) has been shown to be advantageous.
第５図には例として、すべての本発明の特徴を有する
連続鋳造装置が示されている。FIG. 5 shows by way of example a continuous casting apparatus with all the features of the invention.
参照数字リスト １ Ｑ（鋳造粉末） ２ 粉末T11,粉末／スラグの相境界 ３ ｈ（鋳造連続体殻），鋳造連続体殻／溶湯面の高さ ４ hSchlacke,スラグ高さ ５ 粉末，粉末高さ ６ 浸漬出湯口 ７ 沈着物 ８ スラグ中への酸化物の流れ ９ Vg＝鋳造速度 10 QSchlacke＝スラグ消費量 11 空気 12 結晶化境界，鋼の固体／液体 13 鋳造連続体外殻 14 振動（行程高さ，周波数，形状） 15 銅板 16 配分器（タンディッシュ） 17 浸漬出湯口 外法 例えば250×45mm 内法 例えば220×15mm 18 最適化された鋳造粉末 19 75×800〜1600mm 鋳造液面（メニスカス）におけるスラブフォーマ
ット 20 15×220mm,浸漬出湯口の流れの横断面 21 液圧式冷却鋳型駆動装置 22 FST/FTA≦50（ただし、FST＝浸漬出湯口横断面、F
TA＝完全凝固したスラブの鋳造連続体横断面）。Reference number list 1 Q (cast powder) 2 powder T 11 , powder / slag phase boundary 3 h (cast continuous shell), cast continuous shell / melt surface height 4 h Schlacke , slag height 5 powder, powder Height 6 Immersion tap 7 Deposits 8 Oxide flow into slag 9 V g = Casting speed 10 Q Schlacke = Slag consumption 11 Air 12 Crystallization boundary, solid / liquid steel 13 Cast outer shell 14 Vibration (Stroke height, frequency, shape) 15 Copper plate 16 Distributor (tundish) 17 Immersion tap Outer method eg 250 × 45mm Inner method eg 220 × 15mm 18 Optimized casting powder 19 75 × 800-1600mm Casting liquid level Slab format at (meniscus) 20 15 × 220mm, cross section of flow of immersion tap 21 Hydraulic cooling mold drive 22 F ST / F TA ≦ 50 (however, F ST = cross section of immersion tap, F
TA = cross section of a cast solid body of a completely solidified slab.
32 75×800〜1600mm 冷却鋳型出口におけるスラブフォーマット 24 リンク部材又は液圧シリンダ等 25 セグメント0,例えば挟み部材として形成されている 26 液圧シリンダ等 27 50mm,鋳造圧延装置工程後のスラブ厚さ 28 液圧式調整装置等を有するセグメント1...n 29 Vgmax6m/min 30 50mm,鋳造連続体案内部末端におけるスラブ厚さ32 75 × 800 to 1600 mm Slab format at cooling mold outlet 24 Link member or hydraulic cylinder, etc.25 Segment 0, for example, formed as sandwiching member 26 Hydraulic cylinder, etc.27 50 mm, slab thickness after casting and rolling equipment process 28 Segment 1 ... n 29 V gmax 6m / min 30 50mm with hydraulic adjustment device, etc., slab thickness at the end of the guide of the continuous casting body
フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｂ２２Ｄ 11/16 １０５ Ｂ２２Ｄ 11/16 １０５ 11/18 11/18 Ｂ (56)参考文献 特開 平３−8541（ＪＰ，Ａ) 特開 平３−57536（ＪＰ，Ａ) 特表 平９−508070（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B22D 11/20 B22D 11/04 311 B22D 11/108 B22D 11/128 310 B22D 11/128 350 B22D 11/16 105 B22D 11/18 Continuation of the front page (51) Int.Cl. 7 Identification symbol FI B22D 11/16 105 B22D 11/16 105 11/18 11/18 B (56) References JP-A-3-8541 (JP, A) JP Hei 3-57536 (JP, A) Special Table Hei 9-508070 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) B22D 11/20 B22D 11/04 311 B22D 11/108 B22D 11/128 310 B22D 11/128 350 B22D 11/16 105 B22D 11/18
Claims (4)
の中に、浸漬出湯口によって金属溶湯を鋳込み、該浸漬
出湯口と冷却鋳型が、完全凝固したスラブの鋳造連続体
横断面面積FST/浸漬出湯口の横断面面積FTA≦50の条件
を満たす段階と、 − スラグ高さをhSchlacke（４）とし、鋳型中におけ
る溶融金属の液面より上部の鋳造連続体外殻高さをh
Strangschale（３）とした場合に、hSchlacke（４）≧h
Strangschale（３）の条件が、冷却鋳型の振動高さ、振
動の形及び振動数に依存して保たれるように、鋳造粉末
を溶融金属に供給する段階と、 − 冷却鋳型の下方に配設されたマルチロール型ロール
スタンドの中で、多くの段階によって鋳造連続体の断面
積を減少させ、これにより、鋳造連続体の厚さを連続的
に減少させるのに平行して、まだ液状の鋳造連続体内部
に電磁的撹拌の作用に相応する強制的対流を発生させる
段階と、 − マルチロール型ロールスタンドの出口において最終
厚さに到達する際に鋳造連続体内部でまだ２相領域が存
在するように凝固を行う段階と、 を含むことを特徴とする薄肉スラブの製造方法。1. A molten metal is cast by a dipping spout into a vibrating cooling mold formed in a rectangular shape, and the dipping spout and the cooling mold form a cross-sectional area F of a continuous casting body of a completely solidified slab. ST : A stage satisfying the condition of the cross-sectional area F TA ≦ 50 of the immersion tap, and − a slag height of h Schlacke (4), and a height of the outer shell of the continuous casting body above the liquid level of the molten metal in the mold. h
If Strangschale (3), h Schlacke (4) ≧ h
Feeding the casting powder to the molten metal such that the conditions of Strangschale (3) are maintained as a function of the vibration height, shape and frequency of the cooling mold; In a multi-roll type roll stand, the steps of reducing the cross-sectional area of the casting continuum by a number of steps, thereby simultaneously reducing the thickness of the casting continuum, and at the same time, Generating a forced convection in the continuum which corresponds to the action of electromagnetic stirring; and-a two-phase region still exists in the casting continuum when reaching the final thickness at the outlet of the multi-roll roll stand. And performing a solidification as described above.
動の高さ及び振動の形状が自由に選択可能であることを
特徴とする請求の範囲第１項に記載の薄肉スラブの製造
方法。2. The thin slab according to claim 1, wherein the frequency, the height and the shape of the vibration of the cooling mold are freely selectable even during casting. Production method.
チロールスタンド（25）とを備えた連続鋳造装置であっ
て、 − 上記浸漬出湯口は、その横断面面積FTAが完全凝固
したスラブの鋳造連続体横断面面積FSTの1/50以上であ
り、矩形状に形成された振動する冷却鋳型の内部に突出
し、該冷却鋳型は、振動数、振動の高さ及び振動の形状
を自由に調整できる振動装置に接続されており、 − 上記鋳造粉末供給装置は、振動の高さ、振動の形状
及び振動数に依存して、スラグ高さhSchlacke（４）≧
鋳型中における溶融金属の液面より上部の鋳造連続体外
殻高さhStrangschale（３）の条件が維持されるように
鋳造粉末を供給し、 − 上記マルチロールスタンド（25）は、冷却鋳型から
引き出される方向に配設されて連続的に鋳造連続体の厚
さを減少させる、 請求の範囲第１項又は第２項に記載の薄肉スラブの製造
方法を実施するための連続鋳造装置。3. A continuous casting apparatus comprising a immersion tap, a casting powder supply device and a multi-roll stand (25), wherein the immersion tap has a completely solidified cross-sectional area FTA . is 1/50 or more continuous casting body cross-sectional area F ST slab, projecting into the interior of the cooling mold to vibration is formed in a rectangular shape, the cooling mold is frequency, the height and the vibration of the shape of the vibration Connected to a freely adjustable vibrating device, the casting powder feeder, depending on the height of the vibration, the shape of the vibration and the frequency, the slag height h Schlacke (4) ≧
Feeding the casting powder such that the condition of the casting continuum shell height h Strangschale (3) above the liquid level of the molten metal in the mold is maintained; and the multi-roll stand (25) is withdrawn from the cooling mold A continuous casting apparatus for implementing the method for manufacturing a thin slab according to claim 1 or 2, wherein the continuous slab is arranged in a direction in which the thickness of the continuous cast body is reduced.
が得られる程度に、鋳造連続体内部の未だ液状の部位に
おける撹拌作用が得られるように、対向する２つのロー
ルの間隔が選択されることを特徴とする請求の範囲第３
項に記載の連続鋳造装置。4. An interval between two opposing rolls is set so as to obtain a stirring action in a still liquid part inside the casting continuous body to such an extent that a predetermined reduction in thickness of the continuous casting body is obtained. Claim 3 characterized by being selected
Item 15. The continuous casting apparatus according to Item 1.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4403048A DE4403048C1 (en) | 1994-01-28 | 1994-01-28 | Continuous caster and process for producing rectangular thin slabs |
| DE4403048.7 | 1994-01-28 | ||
| PCT/DE1995/000089 WO1995020444A1 (en) | 1994-01-28 | 1995-01-20 | Continuous casting facility and process for producing rectangular thin slabs |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09509615A JPH09509615A (en) | 1997-09-30 |
| JP3056252B2 true JP3056252B2 (en) | 2000-06-26 |
Family
ID=6509214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7519818A Expired - Fee Related JP3056252B2 (en) | 1994-01-28 | 1995-01-20 | Method for producing rectangular thin slab and continuous casting apparatus |
Country Status (14)
| Country | Link |
|---|---|
| EP (1) | EP0741617B2 (en) |
| JP (1) | JP3056252B2 (en) |
| KR (1) | KR100355000B1 (en) |
| CN (1) | CN1046450C (en) |
| AT (1) | ATE164102T1 (en) |
| AU (1) | AU1453195A (en) |
| BR (1) | BR9506665A (en) |
| CA (1) | CA2181902A1 (en) |
| DE (2) | DE4403048C1 (en) |
| DK (1) | DK0741617T4 (en) |
| ES (1) | ES2113730T5 (en) |
| RU (1) | RU2121903C1 (en) |
| WO (1) | WO1995020444A1 (en) |
| ZA (1) | ZA95670B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19639297C2 (en) * | 1996-09-25 | 2000-02-03 | Schloemann Siemag Ag | Method and device for high-speed continuous casting plants with a reduction in strand thickness during solidification |
| DE19639302C2 (en) * | 1996-09-25 | 2000-02-24 | Schloemann Siemag Ag | Method and device for producing thin slabs on a continuous caster |
| AT408323B (en) * | 1999-12-01 | 2001-10-25 | Voest Alpine Ind Anlagen | METHOD FOR STEEL CONTINUOUS |
| DE10057160A1 (en) * | 2000-11-16 | 2002-05-29 | Sms Demag Ag | Method and device for producing thin slabs |
| RU2327544C2 (en) * | 2005-12-27 | 2008-06-27 | Государственное образовательное учреждение высшего профессионального образования Московский государственный вечерний металлургический институт | Method and device for vibration treatment of continuous cast blanks |
| ITMI20120046A1 (en) * | 2012-01-18 | 2013-07-19 | Arvedi Steel Engineering S P A | PLANT AND PROCEDURE FOR THE CONTINUOUS QUICK CASTING OF STEEL BRAMME AND STEEL BRAMME |
| CN109465415A (en) * | 2018-12-07 | 2019-03-15 | 东北大学 | A Sector Section Roller Structure at the End of Continuous Casting Solidification with Double Single-point Heavy Pressure |
| CN117564235B (en) * | 2024-01-15 | 2024-04-09 | 中铝材料应用研究院有限公司 | Casting and rolling device and method for aluminum alloy plate blank |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3423475C2 (en) † | 1984-06-26 | 1986-07-17 | Mannesmann AG, 4000 Düsseldorf | Method and device for the continuous casting of liquid metals, in particular of liquid steel |
| DE3627991A1 (en) * | 1986-08-18 | 1988-02-25 | Mannesmann Ag | METHOD FOR CONTINUOUSLY MOLDING SLABS AND DEVICE FOR CARRYING OUT THE METHOD |
| DE3709188A1 (en) * | 1987-03-20 | 1988-09-29 | Mannesmann Ag | POURING PIPE FOR METALLURGICAL VESSELS |
| DE3818077A1 (en) * | 1988-05-25 | 1989-11-30 | Mannesmann Ag | METHOD FOR CONTINUOUS CASTING ROLLERS |
| DE3823861A1 (en) * | 1988-07-14 | 1990-01-18 | Thyssen Stahl Ag | METHOD AND SYSTEM FOR PRODUCING A STEEL TAPE THICKNESS THAN 10 MM |
| SU1764790A1 (en) * | 1988-08-18 | 1992-09-30 | Всесоюзный научно-исследовательский и проектно-конструкторский институт металлургического машиностроения им.А.И.Целикова | Device for delivery of slag-forming mixture into mold |
| SU1715474A1 (en) * | 1989-09-28 | 1992-02-28 | Центральный научно-исследовательский институт черной металлургии им.И.П.Бардина | Method of producing flat continuously cast ingots |
| RU1677927C (en) * | 1990-01-30 | 1995-07-25 | Центральный научно-исследовательский институт черной металлургии им.И.П.Бардина | Method of continuously cast slabs reduction in solid-liquid state |
| RU1677926C (en) * | 1990-02-19 | 1995-10-20 | Центральный научно-исследовательский институт черной металлургии им.И.П.Бардина | Method of continuous casting of flat ingots and device for its realization |
| SU1754323A1 (en) * | 1990-06-28 | 1992-08-15 | Советско-Нидерландское Совместное Предприятие "Информаркет" | Immersible dull-run fire-proof sleeve |
| SU1771870A1 (en) * | 1991-01-14 | 1992-10-30 | Mariupolskij Metall I | Method of continuous casting of blanks with right-angle section |
-
1994
- 1994-01-28 DE DE4403048A patent/DE4403048C1/en not_active Expired - Lifetime
-
1995
- 1995-01-20 JP JP7519818A patent/JP3056252B2/en not_active Expired - Fee Related
- 1995-01-20 WO PCT/DE1995/000089 patent/WO1995020444A1/en not_active Ceased
- 1995-01-20 RU RU96117380A patent/RU2121903C1/en not_active IP Right Cessation
- 1995-01-20 AU AU14531/95A patent/AU1453195A/en not_active Abandoned
- 1995-01-20 DK DK95906265T patent/DK0741617T4/en active
- 1995-01-20 EP EP95906265A patent/EP0741617B2/en not_active Expired - Lifetime
- 1995-01-20 KR KR1019960704097A patent/KR100355000B1/en not_active Expired - Fee Related
- 1995-01-20 AT AT95906265T patent/ATE164102T1/en active
- 1995-01-20 ES ES95906265T patent/ES2113730T5/en not_active Expired - Lifetime
- 1995-01-20 CN CN95191384A patent/CN1046450C/en not_active Expired - Fee Related
- 1995-01-20 BR BR9506665A patent/BR9506665A/en not_active IP Right Cessation
- 1995-01-20 DE DE59501651T patent/DE59501651D1/en not_active Expired - Lifetime
- 1995-01-20 CA CA002181902A patent/CA2181902A1/en not_active Abandoned
- 1995-01-27 ZA ZA95670A patent/ZA95670B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| EP0741617B1 (en) | 1998-03-18 |
| CN1046450C (en) | 1999-11-17 |
| RU2121903C1 (en) | 1998-11-20 |
| ES2113730T3 (en) | 1998-05-01 |
| KR100355000B1 (en) | 2002-12-31 |
| DK0741617T4 (en) | 2002-06-17 |
| CN1139893A (en) | 1997-01-08 |
| AU1453195A (en) | 1995-08-15 |
| JPH09509615A (en) | 1997-09-30 |
| DE4403048C1 (en) | 1995-07-13 |
| ATE164102T1 (en) | 1998-04-15 |
| EP0741617B2 (en) | 2002-05-02 |
| ZA95670B (en) | 1995-09-28 |
| DE59501651D1 (en) | 1998-04-23 |
| EP0741617A1 (en) | 1996-11-13 |
| ES2113730T5 (en) | 2002-12-01 |
| BR9506665A (en) | 1997-09-09 |
| CA2181902A1 (en) | 1995-08-03 |
| WO1995020444A1 (en) | 1995-08-03 |
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