JPH09122839A - Manufacture of thin steel strip - Google Patents
Manufacture of thin steel stripInfo
- Publication number
- JPH09122839A JPH09122839A JP7342532A JP34253295A JPH09122839A JP H09122839 A JPH09122839 A JP H09122839A JP 7342532 A JP7342532 A JP 7342532A JP 34253295 A JP34253295 A JP 34253295A JP H09122839 A JPH09122839 A JP H09122839A
- Authority
- JP
- Japan
- Prior art keywords
- thin
- strip
- rolling
- steel sheet
- temp
- 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.)
- Withdrawn
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 53
- 239000010959 steel Substances 0.000 title claims abstract description 53
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 238000000034 method Methods 0.000 claims abstract description 18
- 238000001816 cooling Methods 0.000 claims abstract description 16
- 230000009466 transformation Effects 0.000 claims abstract description 9
- 238000005096 rolling process Methods 0.000 abstract description 20
- 238000009749 continuous casting Methods 0.000 abstract description 9
- 238000005098 hot rolling Methods 0.000 abstract description 4
- 238000007670 refining Methods 0.000 abstract description 3
- 238000003303 reheating Methods 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 238000005266 casting Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- 238000001953 recrystallisation Methods 0.000 description 6
- 239000010960 cold rolled steel Substances 0.000 description 5
- 239000011572 manganese Substances 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 229910052698 phosphorus Inorganic materials 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 3
- 229910052748 manganese Inorganic materials 0.000 description 3
- 239000006104 solid solution Substances 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910001562 pearlite Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 102220479482 Puromycin-sensitive aminopeptidase-like protein_C21D_mutation Human genes 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 229910001563 bainite Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- -1 phosphorus Chemical compound 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Heat Treatment Of Steel (AREA)
- Metal Rolling (AREA)
- Continuous Casting (AREA)
- Control Of Metal Rolling (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、薄帯鋼板の製造方
法に関する。TECHNICAL FIELD The present invention relates to a method for manufacturing a strip steel sheet.
【０００２】[0002]
【従来の技術】スリトップキャスタなどの薄鋳片連続鋳
造設備は、より最終製品に近い薄鋳片を溶鋼から直ちに
製造できるため、工程の短縮化や使用エネルギの低減な
どを図って大幅な合理化行うことができる。このような
連続鋳造で得られる薄鋳片は、凝固組織であるため、鋳
造後の組織の微細化が必要である。そのため、例えば、
特開昭６１−９９８３０号公報、特開昭６３−６２８２
２号公報、特開平３−２７４２３１号公報などでは、連
続鋳造で製造した薄帯鋼板を再度加熱する工程により、
薄帯鋼板の組織の微細化を図っている。2. Description of the Related Art Thin cast continuous casting equipment such as slush top casters can immediately produce thin cast pieces closer to the final product from molten steel, thus greatly streamlining by shortening the process and reducing the energy used. It can be carried out. Since the thin slab obtained by such continuous casting has a solidified structure, it is necessary to refine the structure after casting. So, for example,
JP-A-61-99830, JP-A-63-6282
No. 2, JP-A-3-274231, etc., the process of reheating a thin strip steel sheet manufactured by continuous casting
We are trying to refine the structure of the thin strip steel sheet.
【０００３】[0003]
【発明が解決しようとする課題】薄帯鋼板の製造方法で
は、より大幅な合理化が要求されており、上述した薄帯
鋼板の組織の微細化工程の簡略化が求められている。In the method for manufacturing a strip steel sheet, a greater rationalization is required, and a simplification of the above-described microfabrication process of the structure of the strip steel sheet is required.
【０００４】[0004]
【課題を解決するための手段】前述した課題を解決する
ための、本発明による薄帯鋼板の製造方法は、対向して
並設されると共に互いに異なる方向へ回転する一対の冷
却ドラムと当該冷却ドラムの軸端側にそれぞれ配設され
る一対のサイド堰とで形成される空間内に溶鋼を注入
し、薄帯鋼板を連続的に製造する薄帯鋼板の製造方法で
あって、上記溶鋼を１００℃／ｓ以上の速度で冷却凝固
させて薄鋳片とした後、Ａｒ3 変態点の温度とＡｒ3 変
態点の温度よりも２００℃高い温度との間の温度範囲内
で圧下率１０％以上８０％以下の圧延を施すことを特徴
とする。In order to solve the above-mentioned problems, a method for manufacturing a thin strip steel sheet according to the present invention is provided with a pair of cooling drums which are arranged side by side and rotate in mutually different directions, and the cooling. A method for manufacturing a thin strip steel sheet, in which molten steel is injected into a space formed by a pair of side dams respectively arranged on the shaft end side of the drum, and the thin strip steel sheet is continuously produced. after a 100 ° C. / s or faster at cooling coagulated by thin cast strip, Ar 3 temperature of the transformation point and Ar 3 reduction of 10% in the temperature range between 200 ° C. higher than the temperature of the transformation point It is characterized in that the rolling is performed at 80% or less.
【０００５】[0005]
【発明の実施の形態】本発明による薄帯鋼板の製造方法
の実施の形態を図１を用いて説明する。なお、図１は、
その鋼材の温度変化を表すグラフである。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a method for manufacturing a strip steel sheet according to the present invention will be described with reference to FIG. In addition, in FIG.
It is a graph showing the temperature change of the steel material.
【０００６】図１に示すように、溶鋼をストリップキャ
スタなどの薄鋳片連続鋳造設備に注湯し、１００℃／ｓ
以上の速度で急速冷却する。この急冷工程により、溶鋼
は、急速凝固するので、凝固組織が微細化した薄鋳片と
なる。ここで、上記速度が１００℃／ｓよりも遅いと、
薄鋳片の凝固組織が粗粒化してしまうので、良好な結果
を得ることが困難となってしまう。As shown in FIG. 1, molten steel is poured into a thin cast continuous casting facility such as a strip caster, and the molten steel is heated to 100 ° C./s.
Cool rapidly at the above rate. By this quenching process, the molten steel is rapidly solidified, so that the solidified structure becomes a thin slab with a refined structure. Here, if the speed is slower than 100 ° C./s,
Since the solidified structure of the thin slab becomes coarser, it becomes difficult to obtain good results.
【０００７】続いて、Ａｒ3 変態点の温度とＡｒ3 変態
点の温度よりも２００℃高い温度との間の温度範囲Ｔ1
で圧下率１０％以上８０％以下の圧延を施す。この圧延
工程により、上記薄帯鋼板は、組織が完全に再結晶し
て、微細組織となる。ここで、上記温度範囲Ｔ1 よりも
高い温度で圧延を施すと、再結晶後の冷却中に組織が粒
成長を起こして粗大組織となってしまう。一方、上記温
度範囲Ｔ1 よりも小さい温度で圧延を施すと、再結晶が
起こらなくなってしまう。ゆえに、上記温度範囲Ｔ1 以
外の温度範囲で圧延を施すと、良好な結果を得ることが
困難となってしまうのである。また、圧下率が１０％よ
りも小さいと、再結晶が不均一となってしまう。一方、
圧下率が８０％よりも大きいと、圧延設備の規模が従来
の場合と同様に大きくなってしまい、薄鋳片連続鋳造の
合理的な製造を十分に生かすことができなくなってしま
う。[0007] Subsequently, the temperature range between 200 ° C. higher than the temperature of the temperature and the Ar 3 transformation point of Ar 3 transformation point T 1
The rolling is performed at a rolling reduction of 10% or more and 80% or less. By this rolling step, the structure of the thin strip steel sheet is completely recrystallized and becomes a fine structure. Here, if rolling is performed at a temperature higher than the temperature range T 1 , the structure causes grain growth during cooling after recrystallization, resulting in a coarse structure. On the other hand, if rolling is performed at a temperature lower than the temperature range T 1 , recrystallization will not occur. Therefore, if rolling is performed in a temperature range other than the temperature range T 1 , it becomes difficult to obtain good results. If the rolling reduction is less than 10%, recrystallization becomes nonuniform. on the other hand,
If the rolling reduction is greater than 80%, the scale of the rolling equipment becomes large as in the conventional case, and it becomes impossible to make full use of the rational manufacturing of thin cast continuous casting.
【０００８】なお、圧延により再結晶を行う場合、従来
では圧下率が８０％以上必要であったが、本発明では圧
下率が８０％以下でも十分に再結晶を行うことができ
る。その理由は、詳細には不明であるが、急速冷却によ
る凝固組織の微細化で圧延後の組織の再結晶が容易化し
ていることや、上記急速冷却により凝固組織内に生じた
歪エネルギが再結晶に関与している等と考えられる。In the case of performing recrystallization by rolling, a reduction ratio of 80% or more was conventionally required, but in the present invention, recrystallization can be sufficiently performed even if the reduction ratio is 80% or less. The reason for this is not clear in detail, but the fact that the refinement of the solidification structure by rapid cooling facilitates recrystallization of the structure after rolling, and the strain energy generated in the solidification structure due to the rapid cooling is regenerated. It is considered to be involved in crystals.
【０００９】次に、前記薄帯鋼板を通常の熱間圧延工程
で行われている冷却条件と同様な条件で前記温度範囲か
ら冷却する。この冷却工程により、薄帯鋼板は、オース
テナイト−フェライト変態を起こし、組織がさらに微細
化する。なお、上記冷却条件を変えることによって、組
織をマルテンサイト、ベイナイト、パーライトなどとフ
ェライトとの混合相とすることも可能である。Next, the thin strip steel sheet is cooled from the above temperature range under the same cooling conditions as in the normal hot rolling process. By this cooling step, the thin strip steel sheet undergoes austenite-ferrite transformation, and the structure is further refined. It is also possible to change the cooling conditions to a mixed phase of martensite, bainite, pearlite, etc. and ferrite.
【００１０】このようにして処理した後に巻き取った薄
帯鋼板は、組織が微細化されているので、鋳造後の大規
模な設備による熱間圧延や再加熱による熱処理などが不
要となる。従って、薄鋼帯板の組織の微細化工程を大幅
に簡略化することができると同時に当該工程にかかる使
用エネルギ量を大幅に削減することができるので、より
大幅な合理化を図ることができる。また、圧下率８０％
以下の圧延で組織の微細化を図ることができるので、鋳
片の厚さを製品の厚さに近似させて鋳造する薄鋳片連続
鋳造による合理的な製造を十分に生かすことができる。Since the thin strip steel sheet that has been treated in this manner and wound up has a fine structure, it is not necessary to perform hot rolling by a large-scale facility after casting or heat treatment by reheating. Therefore, it is possible to greatly simplify the step of refining the structure of the thin steel strip, and at the same time, it is possible to greatly reduce the amount of energy used in the step, so that a greater rationalization can be achieved. Also, the reduction rate is 80%
Since the structure can be made finer by the following rolling, it is possible to make full use of rational manufacturing by thin casting continuous casting in which the thickness of the casting is approximated to the thickness of the product.
【００１１】なお、前述した薄帯鋼板の材料には、各種
の鋼材を適用することができるが、下記のような組成の
鋼材を上記材料に適用すれば、凝固組織の微細化をより
顕著に行うことができる。Various steel materials can be applied to the material of the above-mentioned thin strip steel sheet, but if a steel material having the following composition is applied to the above material, the refinement of the solidification structure becomes more remarkable. It can be carried out.
【００１２】組成 ・Ｃ：０．０１〜０．３ｗｔ％ ・Ｓｉ：１ｗｔ％以下 ・Ｍｎ：０．１〜２ｗｔ％以下 ・Ｐ：０．１ｗｔ％以下 ・Ｓ：０．０５ｗｔ％以下 ・Ａｌ：０．０１〜０．１ｗｔ％ ・不純物：若干量 ・Ｆｅ：上記組成を除いた残量 Composition : C: 0.01 to 0.3 wt% Si: 1 wt% or less Mn: 0.1 to 2 wt% or less P: 0.1 wt% or less S: 0.05 wt% or less Al: 0.01-0.1 wt% ・ Impurity: a little amount ・ Fe: Remaining amount excluding the above composition
【００１３】ここで、上記組成について説明する。 Ｃ：炭素は、鋼の強度及び組成形態を決定するのに重
要な元素であり、固溶強化のために含有量を０．０１ｗ
ｔ％以上とする一方、延性確保のために含有量を０．３
ｗｔ％以下とする。 Ｓｉ：けい素は、炭素と同様に固溶強化のために添加
され、延性確保のためにその含有量を１ｗｔ％以下とす
る。 Ｍｎ：マンガンは、炭素，けい素と同様に固溶強化の
ために添加され、その含有量を０．１ｗｔ％以上とする
一方、延性確保のために含有量を２ｗｔ％以下とする。 Ｐ：りんは、高温での脆化防止及び延性確保のため、
その含有量を０．１ｗｔ％以下とする。 Ｓ：硫黄は、りんと同様に高温での脆化防止及び延性
確保のため、その含有量を０．０５ｗｔ％以下とする。 Ａｌ：アルミニウムは、脱酸剤として添加され、その
含有量を０．０１ｗｔ％以上とする一方、介在物の過剰
な生成を防ぐために含有量を０．１ｗｔ％以下とする。The above composition will be described below. C: Carbon is an important element for determining the strength and composition morphology of steel, and its content is 0.01 w for solid solution strengthening.
On the other hand, the content should be 0.3% or more to secure ductility,
wt% or less. Similar to carbon, Si: silicon is added for solid solution strengthening, and the content thereof is 1 wt% or less for ensuring ductility. Mn: manganese is added for solid solution strengthening similarly to carbon and silicon, and its content is set to 0.1 wt% or more, while the content is set to 2 wt% or less for ensuring ductility. P: Phosphorus is used for preventing brittleness at high temperature and ensuring ductility.
The content is set to 0.1 wt% or less. S: Sulfur, like phosphorus, has a content of 0.05 wt% or less in order to prevent embrittlement at high temperature and ensure ductility. Al: Aluminum is added as a deoxidizer, and its content is set to 0.01 wt% or more, while its content is set to 0.1 wt% or less in order to prevent excessive formation of inclusions.
【００１４】[0014]
【実施例】本発明による薄帯鋼板の製造方法の各種の実
施例を以下に示す。実施例１ 前述した実施の形態に基づいて、下記の条件で薄鋼帯板
を製造した。条件 ・ストリップキャスタ ロール形式：ステンレス鋼の胴にＮｉ被膜のＣｕスリー
ブを設けたもの ロールサイズ：直径６００ｍｍ，長さ６００ｍｍ ・鋼材組成 Ｃ：０．１４ｗｔ％ Ｓｉ：０．１９ｗｔ％ Ｍｎ：０．６０ｗｔ％ Ｐ：０．０３ｗｔ％ Ｓ：０．０２ｗｔ％ Ａｌ：０．０５ｗｔ％ ・溶鋼温度：１６００℃（タンディッシュ内） ・鋳造板厚：２．５ｍｍ ・鋳造速度：４０ｍ／ｍｉｎ ・急速冷却速度：５００℃／ｓ ・圧延温度：１０００℃ ・圧下率：２０％ ・圧延後冷却速度：３０℃／ｓ ・巻き取り温度：７５０℃EXAMPLES Various examples of the method for producing a strip steel sheet according to the present invention will be described below. Example 1 Based on the above-described embodiment, a thin steel strip was manufactured under the following conditions. Conditions -Strip caster Roll type: Stainless steel body with Ni sleeve Cu sleeve Roll size: Diameter 600mm, length 600mm Steel composition C: 0.14wt% Si: 0.19wt% Mn: 0.60wt % P: 0.03 wt% S: 0.02 wt% Al: 0.05 wt% ・ Melted steel temperature: 1600 ° C (in tundish) ・ Casting plate thickness: 2.5 mm ・ Casting speed: 40 m / min ・ Rapid cooling rate: 500 ℃ / s ・ Rolling temperature: 1000 ℃ ・ Reduction ratio: 20% ・ Cooling rate after rolling: 30 ℃ / s ・ Winding temperature: 750 ℃
【００１５】このようにして得られた薄帯鋼板は、均一
に微細化されたフェライト−パーライト混合組織であっ
た。この薄鋼帯板の機械的特性値を測定したところ、次
のような結果が得られた。機械的特性値 ・耐力：４４０Ｎ／ｍｍ2 ・引張強度：５６０Ｎ／ｍｍ2 ・全伸び：２５％The thin strip steel sheet thus obtained had a uniformly refined ferrite-pearlite mixed structure. When the mechanical property values of this thin steel strip were measured, the following results were obtained. Mechanical property value・ Proof strength: 440N / mm 2・ Tensile strength: 560N / mm 2・ Total elongation: 25%
【００１６】その結果、上記薄帯鋼板は、従来法で得ら
れる薄帯鋼板と同様の機械的特性値を示した。従って、
従来法と同様の機械的特性を有する薄帯鋼板を大幅に簡
略化した工程及び少ないエネルギ量で得ることができ
た。As a result, the above-mentioned strip steel sheet showed the same mechanical characteristic values as those of the strip steel sheet obtained by the conventional method. Therefore,
It was possible to obtain a thin strip steel sheet having the same mechanical properties as the conventional method with a significantly simplified process and a small amount of energy.
【００１７】実施例２ 前述した実施の形態に基づいて、下記の条件で薄帯鋼板
を製造した。条件 （実施例１と同一の条件は省略する。） ・鋼材組成 Ｃ：０．０４ｗｔ％ Ｓｉ：０．０２ｗｔ％ Ｍｎ：０．２５ｗｔ％ Ｐ：０．０１ｗｔ％ Ｓ：０．０１ｗｔ％ Ａｌ：０．０３ｗｔ％ Example 2 A thin strip steel sheet was manufactured under the following conditions based on the above-described embodiment. Conditions (the same conditions as in Example 1 are omitted.) Steel composition C: 0.04 wt% Si: 0.02 wt% Mn: 0.25 wt% P: 0.01 wt% S: 0.01 wt% Al: 0 0.03 wt%
【００１８】このような組成の鋼材を用いて得られた薄
帯鋼板を下記の条件で冷間圧延した後に焼鈍を行って、
冷延鋼板を製造した。条件 ・冷間圧延の圧下率：７０％ ・焼鈍：７２０℃×３０ｓ＋４００℃×６０ｓA strip steel sheet obtained by using a steel material having such a composition is cold-rolled under the following conditions and then annealed.
Cold rolled steel sheet was manufactured. Conditions -Cold rolling reduction: 70% -Annealing: 720 ° C x 30s + 400 ° C x 60s
【００１９】このようにして得られた冷延鋼板の機械的
特性値を測定したところ、次のような結果が得られた。機械的特性値 ・耐力：２５０Ｎ／ｍｍ2 ・引張強度：３５０Ｎ／ｍｍ2 ・全伸び：４２％When the mechanical property values of the cold rolled steel sheet thus obtained were measured, the following results were obtained. Mechanical property values -Proof strength: 250 N / mm 2 , Tensile strength: 350 N / mm 2 , Total elongation: 42%
【００２０】その結果、上記冷延鋼板は、従来法で得ら
れた冷延鋼板と同等の機械的特性値を示した。従って、
大幅に簡略化した工程及び少ないエネルギ量で得られた
薄帯鋼板を冷延鋼板の材料に用いても何ら問題を生じる
ことがない。As a result, the cold-rolled steel sheet showed mechanical property values equivalent to those of the cold-rolled steel sheet obtained by the conventional method. Therefore,
Even if a thin strip steel sheet obtained by a significantly simplified process and a small amount of energy is used as a material for a cold-rolled steel sheet, no problem occurs.
【００２１】[0021]
【発明の効果】本発明による薄帯鋼板の製造方法では、
次のような効果を得ることができる。 工程を大幅に簡略化することができると同時に使用エ
ネルギ量を大幅に削減することができるので、より大幅
な合理化を図ることができる。 圧下率が８０％以下でも上述の効果を得ることができ
るので、鋳片の厚さを製品の厚さに近似させて鋳造する
薄鋳片連続鋳造による合理的な製造を十分に生かすこと
ができる。According to the method for manufacturing a strip steel sheet according to the present invention,
The following effects can be obtained. The process can be greatly simplified, and at the same time, the amount of energy used can be greatly reduced, so that a greater rationalization can be achieved. Since the above effect can be obtained even when the rolling reduction is 80% or less, it is possible to sufficiently utilize the rational manufacturing by thin casting continuous casting in which the thickness of the casting is approximated to the thickness of the product. .
【図１】本発明による薄帯鋼板の製造方法の実施の一形
態例の鋼材の温度変化を表すグラフである。FIG. 1 is a graph showing a temperature change of a steel material in an example of an embodiment of a method for manufacturing a strip steel sheet according to the present invention.
Ｔ1 圧延を行う温度範囲Temperature range for T 1 rolling
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ２１Ｄ 8/02 8315−4Ｅ Ｂ２１Ｂ 37/00 １４４ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI technical display location C21D 8/02 8315-4E B21B 37/00 144
Claims (1)
方向へ回転する一対の冷却ドラムと当該冷却ドラムの軸
端側にそれぞれ配設される一対のサイド堰とで形成され
る空間内に溶鋼を注入し、薄帯鋼板を連続的に製造する
薄帯鋼板の製造方法であって、上記溶鋼を１００℃／ｓ
以上の速度で冷却凝固させて薄鋳片とした後、Ａｒ3 変
態点の温度とＡｒ3 変態点の温度よりも２００℃高い温
度との間の温度範囲内で圧下率１０％以上８０％以下の
圧延を施すことを特徴とする薄帯鋼板の製造方法。1. A molten steel in a space formed by a pair of cooling drums arranged in parallel and facing each other and rotating in mutually different directions, and a pair of side dams respectively arranged on the shaft end side of the cooling drums. Is a method for producing a thin strip steel sheet in which the molten steel is added at 100 ° C./s.
After a thin cast strip by cooling and solidifying the above rate, Ar 3 or less 80% reduction ratio of 10% or more within a temperature range between a temperature 200 ° C. higher than the temperature of the Ar 3 transformation point of the transformation point A method for manufacturing a thin strip steel sheet, comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7342532A JPH09122839A (en) | 1995-08-29 | 1995-12-28 | Manufacture of thin steel strip |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7-220127 | 1995-08-29 | ||
| JP22012795 | 1995-08-29 | ||
| JP7342532A JPH09122839A (en) | 1995-08-29 | 1995-12-28 | Manufacture of thin steel strip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09122839A true JPH09122839A (en) | 1997-05-13 |
Family
ID=26523551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7342532A Withdrawn JPH09122839A (en) | 1995-08-29 | 1995-12-28 | Manufacture of thin steel strip |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09122839A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU744196B2 (en) * | 1997-06-19 | 2002-02-21 | Acciai Speciali Terni S.P.A. | Continuous casting process for producing low carbon steel strips and strips so obtainable with good as cast mechanical properties |
| JP2004508944A (en) * | 2000-09-29 | 2004-03-25 | ニューコア・コーポレーション | Manufacture of thin steel strip |
| CN102990023A (en) * | 2012-12-28 | 2013-03-27 | 青岛云路新能源科技有限公司 | Nozzle for preparing high-flexibility amorphous thin belt |
-
1995
- 1995-12-28 JP JP7342532A patent/JPH09122839A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU744196B2 (en) * | 1997-06-19 | 2002-02-21 | Acciai Speciali Terni S.P.A. | Continuous casting process for producing low carbon steel strips and strips so obtainable with good as cast mechanical properties |
| JP2004508944A (en) * | 2000-09-29 | 2004-03-25 | ニューコア・コーポレーション | Manufacture of thin steel strip |
| JP4875280B2 (en) * | 2000-09-29 | 2012-02-15 | ニューコア・コーポレーション | Manufacture of thin steel strip |
| CN102990023A (en) * | 2012-12-28 | 2013-03-27 | 青岛云路新能源科技有限公司 | Nozzle for preparing high-flexibility amorphous thin belt |
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Legal Events
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| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20030304 |