JPH07188938A - Separation agent for annealing for grain oriented electrical steel sheet - Google Patents
Separation agent for annealing for grain oriented electrical steel sheetInfo
- Publication number
- JPH07188938A JPH07188938A JP5337628A JP33762893A JPH07188938A JP H07188938 A JPH07188938 A JP H07188938A JP 5337628 A JP5337628 A JP 5337628A JP 33762893 A JP33762893 A JP 33762893A JP H07188938 A JPH07188938 A JP H07188938A
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- Prior art keywords
- annealing
- steel sheet
- electrical steel
- oriented electrical
- mgo
- Prior art date
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、方向性電磁鋼板の仕
上焼鈍時に使用して磁気特性の改善に有効な焼鈍分離剤
を提供しようとするものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is to provide an annealing separating agent which is effective in improving magnetic properties when used in finish annealing of grain-oriented electrical steel sheet.
【０００２】[0002]
【従来の技術】方向性電磁鋼板は、主としてトランスそ
の他電気機器の鉄心として使用され、磁気特性として励
磁特性と鉄損特性が優れたものが要求されていて、トラ
ンス等の電気機器類の設計磁束密度の向上は、高磁束密
度を有する方向性電磁鋼板の出現によって初めて可能と
なる。この方向性電磁鋼板の製造にあたっては、焼鈍分
離剤を、最終厚みに冷間圧延した鋼板に塗布し仕上焼鈍
を行うことにより、鋼板表面にフォルステライト質セラ
ミックス絶縁被膜（以下単にフォルステライト被膜とい
う）を被成させるが、焼鈍分離剤の組成が被成された被
膜の性状や鋼板の磁気特性に大きく影響することから、
多くの研究が行なわれその改善がはかられてきている。2. Description of the Related Art Grain-oriented electrical steel sheets are mainly used as iron cores for transformers and other electric equipment, and are required to have excellent magnetic characteristics such as excitation characteristics and iron loss characteristics. The improvement of the density is possible only with the advent of grain-oriented electrical steel sheet having a high magnetic flux density. In the production of this grain-oriented electrical steel sheet, an annealing separator is applied to a steel sheet cold-rolled to a final thickness and finish annealing is performed to form a forsterite-ceramic insulating coating (hereinafter simply referred to as forsterite coating) on the steel sheet surface. However, since the composition of the annealing separator greatly affects the properties of the coated film and the magnetic properties of the steel sheet,
Much research has been done and improvements are being made.
【０００３】[0003]
【従来の技術】これまでに、励磁特性すなわちＢ8 特性
を向上する手段として数多くの提案がなされている。た
とえば、特公昭58−50295 号公報（磁束密度の高い一方
向性珪素鋼板の製造法）には、鋼板の一次再結晶領域と
二次再結晶領域の境界領域において、温度勾配を与えな
がら二次再結晶を進行させることにより(110) [001] 方
位集積度の高い製品が得られることが開示されている。2. Description of the Related Art Up to now, many proposals have been made as means for improving the excitation characteristic, that is, the B 8 characteristic. For example, in Japanese Examined Patent Publication No. 58-50295 (manufacturing method of unidirectional silicon steel sheet with high magnetic flux density), in the boundary region between the primary recrystallization region and the secondary recrystallization region of the steel sheet, a secondary gradient is applied while a temperature gradient is applied. It is disclosed that a product with a high degree of (110) [001] orientation integration can be obtained by proceeding with recrystallization.
【０００４】また、特開平２−258923号公報（磁束密度
の極めて高い方向性電磁鋼板の製造方法）には、温度勾
配付与下での仕上焼鈍時において、二次再結晶の初期に
発生した二次再結晶粒の自由な成長を抑制する処理を高
温となる側のストリップコイル幅方向端部に施すことに
より、結晶粒はストリップ幅方向に著しく伸長し、結晶
粒径巾（ライン方向）が50mm程度に抑制された巨大結晶
粒となり、(110) [001] 方位集積度の高い製品が得られ
ることが開示されている。Further, in Japanese Patent Application Laid-Open No. 2-258923 (method for producing grain-oriented electrical steel sheet having extremely high magnetic flux density), during the finish annealing under a temperature gradient, the secondary recrystallization occurred at the initial stage. By subjecting the strip coil width direction end on the high temperature side to a process that suppresses the free growth of secondary recrystallized grains, the crystal grains are significantly elongated in the strip width direction, and the grain size width (line direction) is 50 mm. It is disclosed that a large crystal grain is suppressed to a certain degree, and a product having a high degree of (110) [001] orientation integration can be obtained.
【０００５】これらのように温度勾配を付与する傾斜焼
鈍により、ストリップ板幅方向に伸長した結晶粒を実現
させる方法は、時として磁束密度の向上効果が変動しや
すい。コイルの仕上げ焼鈍は、ストリップをコイル状に
巻いてバッチ処理で実施する場合が多く、コイル位置
（内巻、中巻、外巻）での熱履歴を均一にすることは困
難であるため、コイル長手方向での２次再結晶挙動を制
御することがむずかしい。さらに傾斜焼鈍処理はバッチ
処理になるうえ、設備費及び製造コストが高くなる等の
問題もある。As described above, in the method of realizing the crystal grains elongated in the width direction of the strip plate by the gradient annealing imparting the temperature gradient, the effect of improving the magnetic flux density is likely to vary from time to time. In many cases, finish annealing of the coil is performed by batch processing by winding the strip into a coil, and it is difficult to make the heat history uniform at the coil position (inner winding, middle winding, outer winding). It is difficult to control the secondary recrystallization behavior in the longitudinal direction. Further, the gradient annealing process is a batch process, and there is a problem that equipment cost and manufacturing cost increase.
【０００６】[0006]
【発明が解決しようとする課題】この発明は、前記した
問題点を有利に解決し、傾斜焼鈍なしに(110) [001] 方
位集積度の高い巨大な結晶粒が得られＢ8 特性が向上で
きる全く新規な焼鈍分離剤を提供することを目的とす
る。The present invention advantageously solves the above-mentioned problems, and obtains giant crystal grains with a high degree of (110) [001] orientation integration without gradient annealing and improves B 8 characteristics. It is an object of the present invention to provide a completely new annealing separating agent.
【０００７】[0007]
【課題を解決するための手段】方向性電磁鋼板の製造に
おいて焼鈍分離剤は、仕上焼鈍時におけるコイル層間の
融着防止効果を有し、仕上焼鈍中に磁気特性の向上に寄
与する地鉄表層近傍のインヒビター成分の挙動の制御や
コイル層間の酸素ホテンシャルの抑制に重要な役割を果
たすとともに、この仕上げ焼鈍により鋼板上にフォルス
テライト被膜を被成して電気的絶縁性の向上効果、鋼板
への張力付与による鉄損の低減効果などを有している。[Means for Solving the Problems] In the production of grain-oriented electrical steel sheets, an annealing separator has an effect of preventing fusion between coil layers during finish annealing and contributes to the improvement of magnetic properties during finish annealing. It plays an important role in controlling the behavior of the inhibitor components in the vicinity and suppressing the oxygen photons between the coil layers, and the effect of improving the electrical insulation by forming a forsterite coating on the steel sheet by this finish annealing. It has the effect of reducing iron loss by applying tension.
【０００８】発明者らはこのような焼鈍分離剤の特性を
さらに向上させるために、MgO を主成分としてこれに種
々の副成分を添加配合して実験を重ねた結果、Tl化合物
の添加が方向性電磁鋼板の二次再結晶挙動を著しく変化
させることを新たに見出し、この発明を達成した。In order to further improve the properties of such an annealing separator, the inventors have conducted experiments by adding MgO 2 as a main component and various subcomponents to it, and as a result, have found that the addition of the Tl compound is in the right direction. The present invention has been achieved by newly finding that the secondary recrystallization behavior of a magnetic electrical steel sheet is significantly changed.
【０００９】すなわち、この発明の要旨は、MgO 系の焼
鈍分離剤であって、該焼鈍分離剤中のMgO 100 重量部に
対して、Tl化合物がTl換算で0.2 〜10重量部添加配合さ
れてなる方向性電磁鋼板用焼鈍分離剤である。That is, the gist of the present invention is an MgO-based annealing separator, in which 0.2 to 10 parts by weight of a Tl compound in terms of Tl is added to 100 parts by weight of MgO in the annealing separator. Is an annealing separator for grain oriented electrical steel sheets.
【００１０】[0010]
【作用】以下にこの発明を詳細に説明する。この発明
は、MgO 系の焼鈍分離剤として、Tl化合物をMgO 100 重
量部に対してTl換算で0.2 〜10重量部添加することを骨
子とするものである。The present invention will be described in detail below. The essence of the present invention is to add 0.2 to 10 parts by weight of a Tl compound in terms of Tl to 100 parts by weight of MgO as an MgO-based annealing separator.
【００１１】このTl化合物添加量の限定は、Tl換算で0.
2 重量部未満では二次再結晶粒形態を変化させる効果に
乏しく、一方10重量部を超えて添加しても二次再結晶粒
形態がそれほど変化しなくなるだけでなく、鋼板上に被
成するフォルステライト被膜を劣化させる原因になるこ
とによる。This Tl compound addition amount is limited to 0.1 in terms of Tl.
If it is less than 2 parts by weight, the effect of changing the secondary recrystallized grain morphology is poor.On the other hand, if it is added in an amount of more than 10 parts by weight, not only the secondary recrystallized grain morphology does not change so much, but it also forms on the steel sheet. It causes deterioration of the forsterite coating.
【００１２】上記において、MgO 系の焼鈍分離剤とは、
仕上焼鈍時の鋼板融着防止の他に、仕上焼鈍中のフォル
ステライト被膜形成のための原料となる。Tl化合物の添
加によりインヒビター成分の分解が抑制されて、２次再
結晶開始温度が上昇する。２次再結晶開始温度付近で
(100)〔001]２次再結晶粒の核生成・粒成長が進行する
時期にはインヒビターの分解がTl(Tl 化合物）により逆
に促進され、粗大な２次粒が形成される。Tl化合物とし
ては、酸化物としてTl2O, Tl2O3 、金属塩としてTlNO3,
Tl2SO4,Tl(NO3)3 ・3H2O, Tl2CO3が有効である。な
お、Tlは単体として分離剤へ添加することも可能である
が金属Tlは、酸化されやすい性質があり空気中で酸化物
を形成するため扱いにくい。したがって、添加方法とし
ては、Tl化合物として添加した方が、分離剤中での均一
分散がしやすいという点で好ましい。In the above, the MgO-based annealing separator is
In addition to preventing fusion of steel plates during finish annealing, it is also a raw material for forming a forsterite film during finish annealing. The addition of the Tl compound suppresses the decomposition of the inhibitor component and raises the secondary recrystallization start temperature. Near the temperature at which secondary recrystallization begins
At the time when nucleation and grain growth of (100) [001] secondary recrystallized grains proceed, the decomposition of the inhibitor is promoted by Tl (Tl compound), and coarse secondary grains are formed. As the Tl compound, Tl 2 O, Tl 2 O 3 as an oxide, TlNO 3 , as a metal salt,
Tl 2 SO 4 , Tl (NO 3 ) 3 3H 2 O and Tl 2 CO 3 are effective. Although Tl can be added to the separating agent as a simple substance, the metal Tl has a property of being easily oxidized and forms an oxide in the air, which is difficult to handle. Therefore, as a method of addition, the addition as a Tl compound is preferable in that uniform dispersion in the separating agent is easy.
【００１３】また、焼鈍分離剤の主成分であるMgO は通
常品でよく、たとえば、CaO ＜0.7％、Cl≦0.04％、SiO
2＜0.2 ％、SO3 ＜0.2 ％、R2O3＜0.2 ％（ＲはAl2O3,
Fe2O3など）及びＢ＜0.15％などの成分やその化合物を
含有してもよく、平均粒径0.4 〜2.0 μm 、クエン活性
度 CAA 40 ％＝60〜90秒であれば良い。そして特にMgO
化学特性は規定しなくともよい。Further, MgO, which is the main component of the annealing separator, may be a normal product such as CaO <0.7%, Cl ≤ 0.04%, SiO 2.
2 <0.2%, SO 3 <0.2%, R 2 O 3 <0.2% (R is Al 2 O 3 ,
Fe 2 O 3 etc.) and B <0.15% and other components or compounds thereof may be contained, and the average particle size is 0.4 to 2.0 μm and the citric activity CAA 40% = 60 to 90 seconds. And especially MgO
The chemical properties need not be specified.
【００１４】さらに、磁気特性、被膜特性を改善するた
めに焼鈍分離剤の他の副成分を複合して添加配合するこ
とも差支えなく、それらの副成分及び添加量の好適範囲
は以下の通りである。（以下の添加量はMgO 100 重量部
に対する割合で示す)TiO2 0.5 〜10重量部及びSrSO4, S
r(OH)2, SrCO3 などのSr化合物を１種または２種以上で
１〜５重量部添加するのが好ましい。この他に、チタン
酸カルシウム、チタン酸ストロンチウムを総量で0.5 〜
20％添加しても良い。Further, in order to improve the magnetic properties and the coating properties, it is also possible to compound and add other auxiliary components of the annealing separator, and the preferable ranges of these auxiliary components and the addition amount are as follows. is there. (The following addition amounts are shown in proportion to 100 parts by weight of MgO) TiO 2 0.5 to 10 parts by weight and SrSO 4 , S
It is preferable to add 1 to 5 parts by weight of one or more Sr compounds such as r (OH) 2 and SrCO 3 . In addition to this, the total amount of calcium titanate and strontium titanate is 0.5-
You may add 20%.
【００１５】つぎに上記組成に調製した焼鈍分離剤は、
スラリ状にして鋼板上に塗布したのち通常の仕上焼鈍条
件、たとえば、仕上焼鈍として 840〜860 ℃の温度で10
〜20時間にわたる１次保定（二次再結晶焼鈍）に引続き
1200℃の保定温度で５〜10時間の純化焼鈍を実施する。
室温から１次保定終了までの雰囲気ガスとしては、不活
性ガス又はＮ2 ガスをもちい、１次保定温度〜純化焼鈍
温度の間はＨ2 ガス、Ｈ2 ＋Ｎ2 混合ガスまたは双方を
温度区間を分けて使用しても良い。純化焼鈍保定中はＨ
2 ガスを用いる焼鈍で良い。Next, the annealing separator prepared in the above composition is
After applying it to a steel sheet in the form of a slurry, it is applied under normal finishing annealing conditions, for example, as finishing annealing at a temperature of 840 to 860 ° C for 10
Continuing the primary retention (secondary recrystallization annealing) for up to 20 hours
Purification annealing is carried out at a holding temperature of 1200 ° C for 5 to 10 hours.
As the atmosphere gas from room temperature to the end of the first retention, an inert gas or N 2 gas is used, and H 2 gas, H 2 + N 2 mixed gas, or both of them are used in a temperature range between the first retention temperature and the purification annealing temperature. You may use it separately. H during purification annealing retention
Annealing using 2 gases is sufficient.
【００１６】この仕上焼鈍により、焼鈍中に鋼板の地鉄
表層へのTlの吸着が起り、地鉄表層近傍のインヒビター
成分の分布が変化することになり、ストリップの板幅方
向に伸長した二次再結晶粒径幅（ライン方向）が30〜10
0mm 程度の巨大結晶粒が生成するようになる。This finish annealing causes Tl to be adsorbed on the surface layer of the base steel of the steel sheet during annealing, which changes the distribution of the inhibitor component in the vicinity of the surface layer of the base steel. Recrystallized grain size width (line direction) is 30 to 10
Large crystal grains of about 0 mm are generated.
【００１７】このように、この発明の焼鈍分離剤を用い
ることにより、仕上焼鈍条件は前記したように傾斜焼鈍
のような特殊な熱処理を必要とせず通常の焼鈍条件で板
幅方向に伸長した巨大な結晶粒を得ることができる。As described above, by using the annealing separator of the present invention, the finish annealing condition does not require the special heat treatment such as the gradient annealing as described above, and the giant annealing is performed in the sheet width direction under the normal annealing condition. It is possible to obtain various crystal grains.
【００１８】ここで、仕上焼鈍条件を通常の同一条件と
し、焼鈍分離剤にTl化合物を添加することによる二次再
結晶粒形態の変化を図１，２，３及び図４に示す。図１
はTl化合物無添加の焼鈍分離剤を用いた場合の二次再結
晶金属組織写真であり、図２はTl2O3 を３重量部（Tl換
算で2.7 重量部) 、図３はTl2O3 を６重量部（Tl換算で
5.4 重量部) 及び図４はTl2O3 を９重量部（Tl換算で8.
1 重量部)、それぞれ添加配合した焼鈍分離剤を用いた
場合の二次再結晶粒を示す説明図である。Here, changes in secondary recrystallized grain morphology due to addition of a Tl compound to the annealing separator are shown in FIGS. 1, 2, 3 and 4 under the same normal finishing annealing conditions. Figure 1
Is a photograph of a secondary recrystallized metallographic structure using an annealing separator without Tl compound addition. Fig. 2 shows 3 parts by weight of Tl 2 O 3 (2.7 parts by weight in terms of Tl) and Fig. 3 shows Tl 2 O. 6 parts by weight of 3 (Tl conversion
5.4 parts by weight) and Fig. 4 show 9 parts by weight of Tl 2 O 3 (8 in terms of Tl.
FIG. 3 is an explanatory view showing secondary recrystallized grains when using an annealing separator added and compounded respectively.
【００１９】なお、上記の図１〜４は、全てサンプルサ
イズ400 ( 板幅方向) ×100 （ライン方向）mmのもので
あり、紙面上下方向が板幅方向である。また、添加量は
MgO100 重量部に対する割合である。All of FIGS. 1 to 4 have a sample size of 400 (plate width direction) × 100 (line direction) mm, and the vertical direction of the drawing is the plate width direction. Also, the addition amount is
It is the ratio to 100 parts by weight of MgO.
【００２０】これらの図から明らかなように、焼鈍分離
剤にTl化合物を添加した図２，３及び４は、Tl化合物無
添加の図１にくらべ二次再結晶粒は粗大化していて、Tl
化合物が二次再結晶粒の粗大化に顕著に影響することを
示している。As is clear from these figures, in FIGS. 2, 3 and 4 in which the Tl compound was added to the annealing separator, the secondary recrystallized grains were coarser than those in FIG.
It is shown that the compound significantly affects the coarsening of the secondary recrystallized grains.
【００２１】[0021]
実施例１ Ｃ：0.08 mass ％、Si：3.30mass％、Mn：0.065 mass
％、Se：0.018 mass％、Al：0.027 mass％及びＮ：0.00
82mass％を含有するスラブを、熱間圧延し、次いで冷間
圧延して最終板厚が0.27mmにした冷延板に脱炭焼鈍を施
し、表１に示すTl化合物及びその添加量の異なる種々の
MgO 主体の焼鈍分離剤をスラリ状にして上記鋼板に塗布
したのち、仕上焼鈍として、850 ℃・15時間の１次保定
焼鈍（二次再結晶焼鈍）に引き続いて1200℃の純化焼鈍
を施し製品とした。Example 1 C: 0.08 mass%, Si: 3.30 mass%, Mn: 0.065 mass%
%, Se: 0.018 mass%, Al: 0.027 mass% and N: 0.00
A slab containing 82 mass% was hot-rolled, then cold-rolled to a cold-rolled sheet having a final sheet thickness of 0.27 mm, and subjected to decarburization annealing. of
An MgO-based annealing separator is applied to the above steel sheet in a slurry form, and then finish annealing is performed at a temperature of 850 ° C for 15 hours in a first holding annealing (secondary recrystallization annealing) process, followed by a 1200 ° C purification annealing product. And
【００２２】[0022]
【表１】 [Table 1]
【００２３】かくして得られた各製品について、磁束密
度（Ｂ8 特性）及び鉄損値（Ｗ17/5 0)を測定した。これ
らの測定結果も上記表１に合わせ示した。The magnetic flux density (B 8 characteristic) and iron loss value (W 17/5 0 ) of each of the products thus obtained were measured. The results of these measurements are also shown in Table 1 above.
【００２４】表１において、試料NO.1〜９はこの発明の
適合例としてTl化合物を適量添加（添加量をTl換算で適
合させる）したMgO 系の焼鈍分離剤を用いたものであ
り、試料NO.10 はTl化合物無添加の比較例であるが、こ
の比較例試料NO.10 に比し適合例試料NO. １〜９はＢ8
特性が向上し、かつ鉄損値も低減している。In Table 1, Samples Nos. 1 to 9 are MgO-based annealing separators to which an appropriate amount of Tl compound was added (the addition amount is adjusted in terms of Tl) as a conforming example of the present invention. NO.10 but is a comparative example of Tl compound without additives, adaptations sample NO compared to the comparative example sample NO.10. 1 to 9 is B 8
The characteristics are improved and the iron loss value is also reduced.
【００２５】実施例２ Ｃ：0.07 mass ％、Si：3.25mass％、Mn：0.07mass％、
Se：0.017 mass％、Al：0.023 mass％及びＮ：0.0085ma
ss％を含有するスラブを、熱間圧延し、次いで冷間圧延
して最終板厚が0.22mmにした冷延板に脱炭焼鈍を施し、
表２に示すTl化合物及びその添加量の異なる種々のMgO
主体の焼鈍分離剤をスラリ状にして上記鋼板に塗布した
のち、仕上焼鈍として、850 ℃・15時間の１次保定焼鈍
に引き続いて1200℃の純化焼鈍を施し製品とした。Example 2 C: 0.07 mass%, Si: 3.25 mass%, Mn: 0.07 mass%,
Se: 0.017 mass%, Al: 0.023 mass% and N: 0.0085ma
A slab containing ss% is hot-rolled, and then cold-rolled, and subjected to decarburization annealing on a cold-rolled sheet having a final sheet thickness of 0.22 mm,
Tl compounds shown in Table 2 and various MgO with different addition amounts
The main component of the annealing separator was applied in the form of a slurry to the above steel sheet, and then the final annealing was carried out at 850 ° C. for 15 hours of primary holding annealing, followed by purification annealing at 1200 ° C. to obtain a product.
【００２６】[0026]
【表２】 [Table 2]
【００２７】かくして得られた各製品について、磁束密
度（Ｂ8 特性）及び鉄損値（Ｗ17/5 0)を測定した。これ
らの測定結果も上記表２に合わせ示した。The magnetic flux density (B 8 characteristic) and the iron loss value (W 17/5 0 ) of each of the products thus obtained were measured. The results of these measurements are also shown in Table 2 above.
【００２８】表２において、試料NO. １〜９はこの発明
の適合例としてTl化合物を適量添加（添加量をTl換算で
適合させる）したMgO 系の焼鈍分離剤を用いたものであ
り、試料NO.10 はTl化合物を過剰に添加した参考例であ
るが、適合例試料NO. １〜９に比し参考例試料NO.10 は
Ｂ8 特性が劣化している。なお、試料NO.10 はTl化合物
を過剰に添加したことにより (100)〔001]方位粒の核生
成・粒成長時に平行して進行するインヒビターの分解促
進が過度に起るため方位の悪い粒まで粒成長するためで
ある。In Table 2, sample Nos. 1 to 9 are those using an MgO-based annealing separator to which an appropriate amount of a Tl compound was added (the addition amount is adjusted in terms of Tl) as a conforming example of the present invention. NO.10 is a reference example excessively added Tl compounds, reference example sample NO.10 than the adaptations sample NO. 1 to 9 is B 8 characteristics are deteriorated. In addition, sample NO.10 had an unfavorable grain size because excessive addition of Tl compound caused excessive nucleation of (100) [001] -oriented grains and accelerated decomposition of the inhibitor that proceeded in parallel during grain growth. This is because the grains grow up to.
【００２９】[0029]
【発明の効果】この発明は、方向性電磁鋼板用のMgO 系
の焼鈍分離剤中にTl化合物を適量含有させるようにした
ものであり、この発明の焼鈍分離剤を用いることによ
り、通常の仕上焼鈍条件でも、ストリップ板幅方向に伸
長した巨大な２次再結晶粒が得られ(110) [001] 集積度
が高く磁気特性の優れる方向性電磁鋼板が得られるよう
になる。EFFECT OF THE INVENTION The present invention is one in which an appropriate amount of Tl compound is contained in an MgO-based annealing separator for grain-oriented electrical steel sheets. Even under the annealing conditions, huge secondary recrystallized grains extending in the width direction of the strip plate can be obtained (110) [001] It becomes possible to obtain a grain-oriented electrical steel sheet having a high degree of integration and excellent magnetic properties.
【図１】Tl化合物無添加の焼鈍分離剤を用いた場合の二
次再結晶粒を示す説明図である。FIG. 1 is an explanatory diagram showing secondary recrystallized grains when an annealing separator without Tl compound addition is used.
【図２】Tl2O3 を３重量部添加した焼鈍分離剤を用いた
場合の二次再結晶粒を示す説明図である。FIG. 2 is an explanatory diagram showing secondary recrystallized grains when an annealing separator containing 3 parts by weight of Tl 2 O 3 is used.
【図３】Tl2O3 を６重量部添加した焼鈍分離剤を用いた
場合の二次再結晶粒を示す説明図である。FIG. 3 is an explanatory diagram showing secondary recrystallized grains when an annealing separator containing 6 parts by weight of Tl 2 O 3 is used.
【図４】Tl2O3 を９重量部添加した焼鈍分離剤を用いた
場合の二次再結晶粒を示す説明図である。FIG. 4 is an explanatory diagram showing secondary recrystallized grains when an annealing separator containing 9 parts by weight of Tl 2 O 3 is used.
Claims (1)
離剤中のMgO 100 重量部に対して、Tl化合物がTl換算で
0.2 〜10重量部添加配合されてなる方向性電磁鋼板用焼
鈍分離剤。1. An MgO-based annealing separator, wherein the Tl compound is calculated as Tl based on 100 parts by weight of MgO in the annealing separator.
An annealing separator for grain-oriented electrical steel sheets, which contains 0.2 to 10 parts by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33762893A JP3277059B2 (en) | 1993-12-28 | 1993-12-28 | Annealing separator for grain-oriented electrical steel sheets |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33762893A JP3277059B2 (en) | 1993-12-28 | 1993-12-28 | Annealing separator for grain-oriented electrical steel sheets |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07188938A true JPH07188938A (en) | 1995-07-25 |
| JP3277059B2 JP3277059B2 (en) | 2002-04-22 |
Family
ID=18310449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33762893A Expired - Fee Related JP3277059B2 (en) | 1993-12-28 | 1993-12-28 | Annealing separator for grain-oriented electrical steel sheets |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3277059B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1088244A (en) * | 1996-09-12 | 1998-04-07 | Kawasaki Steel Corp | Magnesium oxide for separation agent at annealing used fixed at manufacture of grain oriented silicon steel sheet |
| JP2005171387A (en) * | 2004-12-22 | 2005-06-30 | Jfe Steel Kk | MANUFACTURING METHOD OF MgO FOR ANNEALING SEPARATING AGENT |
| JP2016094655A (en) * | 2014-11-17 | 2016-05-26 | 新日鐵住金株式会社 | Silicon steel sheet for spirally-wound band-shaped core, method for producing the same, spirally-wound band-shaped core, and method for producing spirally-wound band-shaped core |
-
1993
- 1993-12-28 JP JP33762893A patent/JP3277059B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1088244A (en) * | 1996-09-12 | 1998-04-07 | Kawasaki Steel Corp | Magnesium oxide for separation agent at annealing used fixed at manufacture of grain oriented silicon steel sheet |
| JP2005171387A (en) * | 2004-12-22 | 2005-06-30 | Jfe Steel Kk | MANUFACTURING METHOD OF MgO FOR ANNEALING SEPARATING AGENT |
| JP2016094655A (en) * | 2014-11-17 | 2016-05-26 | 新日鐵住金株式会社 | Silicon steel sheet for spirally-wound band-shaped core, method for producing the same, spirally-wound band-shaped core, and method for producing spirally-wound band-shaped core |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3277059B2 (en) | 2002-04-22 |
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