JP3067895B2 - Manufacturing method of thin slab for non-oriented electrical steel sheet - Google Patents
Manufacturing method of thin slab for non-oriented electrical steel sheetInfo
- Publication number
- JP3067895B2 JP3067895B2 JP4189758A JP18975892A JP3067895B2 JP 3067895 B2 JP3067895 B2 JP 3067895B2 JP 4189758 A JP4189758 A JP 4189758A JP 18975892 A JP18975892 A JP 18975892A JP 3067895 B2 JP3067895 B2 JP 3067895B2
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- Prior art keywords
- thin slab
- thickness
- roll
- slab
- thin
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Description
【０００１】[0001]
【産業上の利用分野】本発明は、１．０〜８．０％のＳ
ｉを含む、靭性に優れた無方向性電磁鋼板用薄鋳片の製
造方法に関するものである。BACKGROUND OF THE INVENTION The present invention relates to a 1.0 to 8.0% S
The present invention relates to a method for producing a thin cast piece for a non-oriented electrical steel sheet having excellent toughness, including i.
【０００２】[0002]
【従来の技術】無方向性電磁鋼板は回転機および中小型
変圧器などの鉄心材料として広く利用されており、磁気
特性として励磁特性と鉄損特性が良好でなくてはならな
い。しかも近年、特にエネルギーロスの少ない低鉄損素
材への市場要求が強まっている。2. Description of the Related Art Non-oriented electrical steel sheets are widely used as iron core materials for rotating machines, small and medium-sized transformers, and the like, and must have good excitation and iron loss characteristics as magnetic characteristics. In recent years, the market demand for low iron loss materials with particularly low energy loss has been increasing.
【０００３】しかし、従来の製造方法では、熱延、冷
延、焼鈍などの複雑な工程処理が必要なため、製造コス
トが非常に高いという問題がある。そこで最近、電磁鋼
の溶鋼を急冷凝固法で直接薄帯にする技術が開発され
た。この方法によれば、溶鋼から直接成品または半成品
ができるので、製造コストを大幅に下げることが可能で
ある。[0003] However, the conventional production method has a problem that the production cost is extremely high because complicated processing such as hot rolling, cold rolling and annealing is required. Therefore, a technique has been recently developed in which molten steel of electromagnetic steel is directly thinned by a rapid solidification method. According to this method, a product or semi-product can be made directly from molten steel, so that the production cost can be significantly reduced.
【０００４】急冷凝固法で薄鋳片を得て、それを出発素
材とする無方向性電磁鋼板を製造する方法は、たとえ
ば、特開平２−１９４１２３号公報には、Ｓｉ：０．１
〜４．０重量％を含有する溶湯を急冷凝固して鋳片を
得、再加熱することなく圧下率６０％以下、圧延仕上げ
温度６００〜１０００℃で熱延し、次いで、得られた熱
延鋼帯に冷延および仕上げ焼鈍を施すことを特徴とする
磁気特性に優れた無方向性電磁鋼板の製造方法について
開示されている。A method for producing a non-oriented electrical steel sheet using a thin cast slab by a rapid solidification method as a starting material is disclosed in, for example, Japanese Patent Application Laid-Open No. 2-194123, in which Si: 0.1 is used.
The molten metal containing ４4.0% by weight is rapidly solidified to obtain a slab, which is hot-rolled at a rolling reduction temperature of 600 to 1000 ° C. without reheating at a rolling reduction of 60% or less, and then obtained hot-rolled. A method for producing a non-oriented electrical steel sheet having excellent magnetic properties, characterized by subjecting a steel strip to cold rolling and finish annealing, is disclosed.
【０００５】さらに、連鋳スラブ法では、特開平３−１
００１９号公報には、Ｓｉを含有するスラブを、鋳片温
度が１０００℃を下回らない状態から熱間圧延を開始
し、仕上温度８２０℃以上で圧延を終了する方法が開示
されている。Further, the continuous casting slab method is disclosed in
No. 0019 discloses a method of starting hot rolling of a slab containing Si from a state where the slab temperature does not fall below 1000 ° C. and finishing the rolling at a finishing temperature of 820 ° C. or higher.
【０００６】[0006]
【発明が解決しようとする課題】以上のように、従来開
示されてきた急冷凝固法で薄鋳片を得て、それを出発素
材とする無方向性電磁鋼板の製造方法は、望ましい磁気
特性を得ることを目的としたものである。しかしなが
ら、本発明者らは、従来技術による急冷凝固法を工業的
に生産する場合、後工程での薄鋳片の靭性を解決するこ
とが必要である問題点に直面した。つまり、従来技術に
よる急冷凝固鋳片の繰り曲げ回数が非常に悪く、連続焼
鈍ライン、冷延時などに鋳片割れが発生し通板性が非常
に悪いという、工業上の大きな問題点を有している。As described above, the method of manufacturing a non-oriented electrical steel sheet using thin slabs obtained by the rapid solidification method disclosed in the prior art and using the obtained slabs as starting materials has the desired magnetic properties. It is intended to obtain. However, the present inventors have encountered a problem that it is necessary to solve the toughness of a thin slab in a subsequent step when industrially producing the rapid solidification method according to the prior art. In other words, the number of bending times of the rapidly solidified cast slab according to the prior art is very poor, continuous annealing line, slab cracks occur at the time of cold rolling, etc. I have.
【０００７】さらに、特開平２−１９４１２３号公報や
特開平３−１００１９号公報に示すように、得られた鋳
片に対して熱間圧延を加える場合、鋳造設備に加えて熱
間圧延機が必要であり、設備費が巨額になり、また鋳造
機と熱間圧延機とのマッチングが非常に困難であるとい
う問題点がある。[0007] Further, as shown in JP-A-2-194123 and JP-A-3-10019, when hot rolling is performed on the obtained slab, a hot rolling mill is used in addition to the casting equipment. It is necessary, and the equipment cost is enormous, and there is a problem that matching between the casting machine and the hot rolling mill is very difficult.
【０００８】本発明は、かかる従来の問題点を解消しよ
うとするものであって、このような無方向性電磁鋼板用
薄鋳片を製造するに際し、あまり設備費がかからずに、
脆性問題を解決しうる靭性の優れた上記薄鋳片の製造方
法を提供することを目的とする。The present invention is intended to solve such a conventional problem. When manufacturing such a thin slab for a non-oriented electrical steel sheet, it does not require much equipment cost.
It is an object of the present invention to provide a method for manufacturing the thin cast piece having excellent toughness capable of solving the brittleness problem.
【０００９】[0009]
【課題を解決するための手段】本発明は、上記目的を達
成すべく検討を重ねた結果完成したものであって、その
要旨とするところは、質量でＳｉ：１．０〜８．０％を
含有し、その他電磁鋼として必要な成分元素を含み、残
部実質的にＦｅからなる溶鋼を、移動更新する冷却体に
より急冷凝固せしめて薄鋳片を得るに際し、移動更新す
る冷却体から薄鋳片が離脱する前に、凝固完了させると
ともに、５０％超の減厚を行うことを特徴とする靭性に
優れた無方向性電磁鋼板用薄鋳片の製造方法である。上
記移動更新する冷却体は双ロールであることが好まし
い。 Means for Solving the Problems The present invention has been completed as a result of repeated studies to achieve the above object, and the gist of the present invention is that Si: 1.0 to 8.0% by mass. In addition, the molten steel consisting essentially of Fe containing the necessary elemental elements as electromagnetic steel, and rapidly cooling and solidifying the molten steel by the cooling body to be moved and renewed to obtain a thin slab, the thin casting from the cooling body to be moved and renewed. This is a method for producing a thin cast piece for a non-oriented electrical steel sheet having excellent toughness, wherein solidification is completed before the piece separates and the thickness is reduced by more than 50% . Up
The cooling body to be moved and updated is preferably a twin roll.
No.
【００１０】[0010]
【作用】以下に本発明を詳細に説明する。本発明者ら
は、繰り曲げ試験後の破断面を観察した結果、いずれも
粒内破断であることが判明した。このことから、無方向
性電磁鋼板用薄鋳片の脆化の原因として、従来の熱延プ
ロセスの熱延板と比較して薄鋳片での結晶粒径が大きい
ことの他に、Ｓｉ添加によりフェライト地そのものの靭
性が低下し、薄鋳片繰り曲げ時の交差すべりが困難にな
っていることを見出した。さらに、急冷凝固された薄鋳
片では、通常の連続鋳造材に比べて、溶湯の大きな収縮
率または冷却時の熱応力により導入される鋳物中の欠陥
が多いことも見出した。これは、急冷凝固法では０．１
秒オーダの瞬時に凝固が完了することに起因しているも
のと思われる。そこで対策を重ねた結果、溶鋼から凝固
する直後に、加工歪みを与えることにより、交差すべり
を容易にし、鋳片に内蔵される欠陥も減少するので、靭
性が改善されることを見出し、本発明を完成した。The present invention will be described below in detail. As a result of observing the fracture surface after the bending test, the inventors have found that all fractures are intragranular. From this, the cause of the embrittlement of the thin slab for non-oriented electrical steel sheets is that, in addition to the large grain size of the thin slab compared to the hot rolled sheet of the conventional hot rolling process, the addition of Si As a result, it was found that the toughness of the ferrite ground itself was reduced, and it was difficult to cross-slip when bending thin slabs. Furthermore, it has been found that, in a thin cast piece that has been rapidly solidified, there are many defects in a casting introduced by a large shrinkage ratio of a molten metal or a thermal stress at the time of cooling as compared with an ordinary continuous cast material. This is 0.1% in the rapid solidification method.
It seems to be due to the completion of solidification in the order of seconds. Therefore, as a result of repeated measures, it has been found that by giving a work strain immediately after solidification from molten steel, cross slip is facilitated and defects incorporated in the slab are reduced, so that toughness is improved. Was completed.
【００１１】図１に双ロール法を例として、（ａ）通常
の急冷凝固法と（ｂ）本発明法との比較を示す。図中
の、Ａ部は鋳造部分、Ｂ部は圧延部分、Ｆ点は凝固完了
点を示す。通常の急冷凝固法〔図１（ａ）〕では、ロー
ルから薄鋳片が離脱する時点で、鋳造が完了しており
〔図１（ａ）Ａ部、Ｆ点〕、凝固完了点とロールから薄
鋳片が離脱する点とが一致している。しかし、本発明法
〔図１（ｂ）〕は、ロールから薄鋳片が離脱するよりも
前に、鋳造を完了させ〔図１（ｂ）Ａ部、Ｆ点〕、以降
はロールに圧力をかけて薄鋳片を減厚させる〔図１
（ｂ）Ｂ部〕方法をとっている。そして、この減厚によ
り鋳片に内蔵される欠陥が減少し、靭性が改善されるこ
とを見いだした。FIG. 1 shows a comparison between (a) a normal rapid solidification method and (b) the method of the present invention, taking the twin-roll method as an example. In the figure, part A indicates a cast part, part B indicates a rolled part, and point F indicates a solidification completion point. In the usual rapid solidification method [Fig. 1 (a)], the casting is completed at the point when the thin slab separates from the roll [Fig. 1 (a), part A, point F]. This is consistent with the point at which the thin slab separates. However, according to the method of the present invention (FIG. 1 (b)), the casting is completed before the thin slab separates from the roll (part A, point F in FIG. 1 (b)). To reduce the thickness of the thin slab [Fig.
(B) Part B]. It has been found that the reduction in the thickness reduces defects incorporated in the slab and improves the toughness.
【００１２】次に本発明において、鋼組成および製造条
件を前記のように限定した理由を詳細に説明する。この
鋼成分の限定理由は下記のとおりである。Ｓｉは鉄損を
良くするために下限を１．０％とするが、多すぎると冷
間圧延の際に割れ易く加工が困難となるので上限を８．
０％とする。なお、本発明において、Ｓｉ以外の鋼成分
としては、磁気特性の向上、機械的性質の向上、耐銹性
の向上などの目的のために、Ａｌ，Ｍｎ，Ｐ，Ｂ，Ｎ
ｉ，Ｃｒ，Ｓｂ，Ｓｎ，Ｃｕの一種または二種以上を
０．０１〜１０％含有させても良い。Next, the reason why the steel composition and the manufacturing conditions are limited as described above in the present invention will be described in detail. The reasons for limiting the steel components are as follows. The lower limit of Si is set to 1.0% in order to improve iron loss, but if it is too large, it tends to break during cold rolling and processing becomes difficult.
0%. In the present invention, steel components other than Si include Al, Mn, P, B, and N for the purpose of improving magnetic properties, mechanical properties, and rust resistance.
One, two or more of i, Cr, Sb, Sn, and Cu may be contained in an amount of 0.01 to 10%.
【００１３】さらに、この溶鋼を移動更新する冷却体に
より急冷凝固せしめて薄鋳片を得るに際し、移動更新す
る冷却体から薄鋳片が離脱する前に凝固完了させるとと
もに、減厚を行う。このときの急冷凝固法には、双ロー
ル法、双ベルト法などが考えられる。たとえば、図１
（ｂ）に双ロール法を例とした場合を示す。本発明法で
は、凝固完了点（Ｆ点）を、双ロール１から薄鋳片２が
離脱する点よりも前に来るように制御する。これには、
ロール１と溶鋼３との接触時間を長くする方法、溶鋼３
の温度を下げる方法などがある。さらに、圧延部（Ｂ
部）で減厚するため、ロール１に圧下力をかけて減厚さ
せる方法、ロール１のギャップの設定を少なくする方法
などが必要である。この時の、減厚率は５０％超とする
が、あまり減厚率が高いと設備的負担が大きくなるの
で、適度な減厚率が必要である。この時の減厚率とは、
凝固が完了する時のシェル厚ｔ0 〔図１（ｂ）〕から双
ロール１を離脱する時の薄鋳片２の板厚ｔ〔図１
（ｂ）〕までの圧下率のことを言う。以上、凝固完了と
同時に減厚を実施すると、格段に組織が微細化され、こ
れにより靭性が得られる。Further, when the molten steel is rapidly cooled and solidified by the cooling body for moving and updating to obtain a thin slab, the solidification is completed before the thin slab separates from the cooling body for moving and updating, and the thickness is reduced. As the rapid solidification method at this time, a twin roll method, a twin belt method, or the like can be considered. For example, FIG.
(B) shows a case where the twin-roll method is used as an example. In the method of the present invention, the solidification completion point (point F) is controlled to come before the point where the thin slab 2 separates from the twin rolls 1. This includes
A method for extending the contact time between the roll 1 and the molten steel 3,
There is a method of lowering the temperature. Further, the rolling section (B
In order to reduce the thickness in the section (1), a method of reducing the thickness by applying a rolling force to the roll 1 and a method of reducing the setting of the gap of the roll 1 are required. At this time, the thickness reduction rate is set to be more than 50%. However, if the thickness reduction rate is too high, the burden on the equipment increases, so an appropriate thickness reduction rate is required. The thickness reduction rate at this time is
The thickness t of the thin slab 2 when the twin roll 1 is removed from the shell thickness t 0 when solidification is completed (FIG. 1B) [FIG.
(B)]. As described above, when the thickness is reduced at the same time as the completion of the solidification, the structure is remarkably refined, thereby obtaining toughness.
【００１４】以上により得られる薄鋳片の板厚は０．３
〜４．０mm厚が好ましい。これは、最終板厚０．０３〜
１．００mmの製品を想定した時、良好な磁気特性を得る
ためには０．３mm未満では冷却圧下率が不足であり、
４．０mm超では冷延圧下率は過剰となるからである。さ
らに、減厚を実施することにより、板厚精度の向上を望
むことも可能である。次に本発明の実施例を挙げて説明
する。The thickness of the thin slab thus obtained is 0.3
A thickness of ~ 4.0 mm is preferred. This is the final thickness 0.03 ~
Assuming a 1.00 mm product, if it is less than 0.3 mm, the cooling reduction is insufficient to obtain good magnetic properties.
If it exceeds 4.0 mm, the cold rolling reduction becomes excessive. Further, it is possible to improve the thickness accuracy by reducing the thickness. Next, an example of the present invention will be described.
【００１５】[0015]
〔実施例１〕表１に示す成分組成を含む溶鋼を、ロール
径が３００mmφの双ロール急冷凝固法により凝固させ
た。鋳造条件（Ａ）は、溶鋼のロール接触時間は０．３
秒、湯溜まり部の溶鋼温度は１４９５℃で、薄鋳片がロ
ールから離脱すると同時に凝固を完了させ、そのまま
１．７mm厚の薄鋳片を得た。鋳造条件（Ｂ）は、溶鋼の
ロール接触時間は０．５秒、湯溜まり部の溶鋼温度は１
４９３℃で、薄鋳片がロールから離脱するよりも前に、
凝固を完了させ、そののち減厚を行った。このロール圧
下力は１００kg／mmであった。この時、薄鋳片の減厚率
は８０％、得られた薄鋳片の板厚は１．７mmである。Example 1 Molten steel containing the component compositions shown in Table 1 was solidified by a twin-roll rapid solidification method having a roll diameter of 300 mmφ. The casting condition (A) is that the contact time of the roll of molten steel is 0.3.
In a second, the molten steel temperature in the pool was 1495 ° C., the solidification was completed at the same time as the thin slab was separated from the roll, and a 1.7 mm thick thin slab was obtained as it was. The casting conditions (B) were as follows: the molten steel roll contact time was 0.5 seconds, and the molten steel temperature at the pool was 1
At 493 ° C., before the thin slab leaves the roll,
The coagulation was completed and then the thickness was reduced. The roll rolling force was 100 kg / mm. At this time, the thickness reduction rate of the thin slab was 80%, and the thickness of the obtained thin slab was 1.7 mm.
【００１６】表２に、得られた薄鋳片の繰り曲げ回数を
示す。これは半径８mmの９０°曲げ試験機にて破断する
までの回数を示した。条件（Ｂ）で良好な靭性が得られ
た。ついで、得られた薄鋳片を酸洗した後、冷間圧延を
行い０．３５mm厚にした。次に、１０００℃で３０秒
間、連続仕上げ焼鈍を施し、磁気特性を測定した。この
時、得られた製品はＷ15/50 が２．９（w/kg）以下のも
のが得られた。Table 2 shows the number of bending times of the obtained thin slab. This indicates the number of times to break by a 90 ° bending test machine with a radius of 8 mm. Good toughness was obtained under condition (B). Subsequently, the obtained thin slab was pickled and then cold-rolled to a thickness of 0.35 mm. Next, continuous finish annealing was performed at 1000 ° C. for 30 seconds, and the magnetic properties were measured. At this time, the obtained product had a W 15/50 of 2.9 (w / kg) or less.
【００１７】[0017]
【表１】 [Table 1]
【００１８】[0018]
【表２】 [Table 2]
【００１９】〔実施例２〕表３に示す成分組成を含む溶
鋼を、ロール径が３００mmφの双ロール急冷凝固法によ
り凝固させた。鋳造条件（Ｃ）は、溶鋼のロール接触時
間は０．３秒、湯溜まり部の溶鋼温度は１５２０℃で、
薄鋳片がロールから離脱すると同時に凝固を完了させ、
そのまま１．７mm厚の薄鋳片を得た。鋳造条件（Ｄ）
は、溶鋼のロール接触時間は０．５秒、湯溜まり部の溶
鋼温度は１５１５℃で、薄鋳片がロールから離脱するよ
りも前に、凝固を完了させ、そののち減厚を行った。減
厚した時のロール圧下力は８０kg／mmであった。この
時、薄鋳片の減厚率は６０％、得られた薄鋳片の板厚は
１．７mmである。Example 2 Molten steel containing the component compositions shown in Table 3 was solidified by a twin-roll rapid solidification method having a roll diameter of 300 mmφ. The casting conditions (C) were as follows: the molten steel roll contact time was 0.3 seconds, the molten steel temperature in the pool was 1520 ° C
The solidification is completed at the same time as the thin slab separates from the roll,
A thin cast piece having a thickness of 1.7 mm was obtained as it was. Casting conditions (D)
The molten steel roll contact time was 0.5 seconds, the molten steel temperature in the pool was 1515 ° C., solidification was completed before the thin slab was separated from the roll, and then the thickness was reduced. The roll rolling force when the thickness was reduced was 80 kg / mm. At this time, the thickness reduction rate of the thin slab was 60%, and the thickness of the obtained thin slab was 1.7 mm.
【００２０】表４に、得られた薄鋳片の繰り曲げ回数を
示す。条件（Ｄ）で良好な靭性が得られた。ついで、得
られた薄鋳片を酸洗した後、冷間圧延を行い０．５０mm
厚にした。次に、９５０℃で２０秒間、連続仕上げ焼鈍
を施し、磁気特性を測定した。この時、得られた製品は
Ｗ15/50 が５．６（w/kg）以下のものが得られた。Table 4 shows the number of times of bending of the obtained thin slab. Good toughness was obtained under the condition (D). Then, after the obtained thin slab was pickled, it was cold-rolled to 0.50 mm
It was thick. Next, continuous finish annealing was performed at 950 ° C. for 20 seconds, and the magnetic properties were measured. At this time, the obtained product had a W 15/50 of 5.6 (w / kg) or less.
【００２１】[0021]
【表３】 [Table 3]
【００２２】[0022]
【表４】 [Table 4]
【００２３】[0023]
【発明の効果】本発明によれば、急冷凝固法により良好
な靭性を有し、通板性に優れた珪素鋼薄鋳片を得ること
ができ、無方向性電磁鋼板を、安価かつ省エネルギーに
製造することができるので、工業上の貢献するところが
極めて大である。According to the present invention, a silicon steel thin slab having good toughness and excellent sheet passing property can be obtained by the rapid solidification method, and a non-oriented electrical steel sheet can be produced at low cost and energy saving. Since it can be manufactured, the industrial contribution is extremely large.
【図面の簡単な説明】[Brief description of the drawings]
【図１】双ロール法を例とした急冷凝固法であって
（ａ）は従来技術、（ｂ）は本発明法の説明図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram illustrating a rapid solidification method using a twin-roll method as an example, in which (a) illustrates a conventional technique and (b) illustrates a method of the present invention.
１ 双ロール ２ 薄鋳片 ３ 溶鋼 DESCRIPTION OF SYMBOLS 1 Twin roll 2 Thin cast piece 3 Molten steel
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｈ０１Ｆ 1/16 Ｈ０１Ｆ 1/16 Ａ (58)調査した分野(Int.Cl.7，ＤＢ名) B22D 11/00 B22D 11/06 330 C22C 33/04 C22C 38/00 303 H01F 1/16 ──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. 7 identification symbol FI H01F 1/16 H01F 1/16 A (58) Field surveyed (Int.Cl. 7 , DB name) B22D 11/00 B22D 11 / 06 330 C22C 33/04 C22C 38/00 303 H01F 1/16
Claims (2)
し、その他電磁鋼として必要な成分元素を含み、残部実
質的にＦｅからなる溶鋼を、移動更新する冷却体により
急冷凝固せしめて薄鋳片を得るに際し、移動更新する冷
却体から薄鋳片が離脱する前に、凝固完了させるととも
に、５０％超の減厚を行うことを特徴とする靭性に優れ
た無方向性電磁鋼板用薄鋳片の製造方法。1. A molten steel containing 1.0 to 8.0% of Si by mass , containing other necessary elements as an electromagnetic steel and substantially consisting of Fe, and rapidly solidified by a cooling body that moves and renews. When obtaining thin slabs at least, solidification is completed before thin slabs are separated from the cooling body that moves and renews, and the thickness is reduced by more than 50%. Manufacturing method of thin slab for steel sheet.
とを特徴とする請求項１記載の脆性に優れた無方向性電
磁鋼板用薄鋳片の製造方法。2. The method for producing a thin slab for a non-oriented electrical steel sheet excellent in brittleness according to claim 1, wherein the cooling body to be moved and renewed is a twin roll.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4189758A JP3067895B2 (en) | 1992-07-16 | 1992-07-16 | Manufacturing method of thin slab for non-oriented electrical steel sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4189758A JP3067895B2 (en) | 1992-07-16 | 1992-07-16 | Manufacturing method of thin slab for non-oriented electrical steel sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0631395A JPH0631395A (en) | 1994-02-08 |
| JP3067895B2 true JP3067895B2 (en) | 2000-07-24 |
Family
ID=16246690
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4189758A Expired - Lifetime JP3067895B2 (en) | 1992-07-16 | 1992-07-16 | Manufacturing method of thin slab for non-oriented electrical steel sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3067895B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE338146T1 (en) † | 2002-05-08 | 2006-09-15 | Ak Steel Properties Inc | METHOD FOR CONTINUOUS CASTING NON-ORIENTED ELECTRICAL STEEL STRIP |
| JP5423616B2 (en) * | 2009-09-14 | 2014-02-19 | 新日鐵住金株式会社 | Method for producing non-oriented electrical steel sheet with excellent magnetic properties and method for producing cast steel strip for producing non-oriented electrical steel sheet |
| CN104226954B (en) * | 2014-08-25 | 2016-10-19 | 东北大学 | Precipitate and inclusion control method during twin-roll thin strip continuous casting non-orientation silicon steel |
-
1992
- 1992-07-16 JP JP4189758A patent/JP3067895B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0631395A (en) | 1994-02-08 |
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