JPH01309922A - Production of grain-oriented magnetic steel sheet having low iron loss - Google Patents
Production of grain-oriented magnetic steel sheet having low iron lossInfo
- Publication number
- JPH01309922A JPH01309922A JP4071588A JP4071588A JPH01309922A JP H01309922 A JPH01309922 A JP H01309922A JP 4071588 A JP4071588 A JP 4071588A JP 4071588 A JP4071588 A JP 4071588A JP H01309922 A JPH01309922 A JP H01309922A
- Authority
- JP
- Japan
- Prior art keywords
- steel sheet
- grain
- magnetic steel
- annealing
- electrical steel
- 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.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 31
- 239000010959 steel Substances 0.000 title claims abstract description 31
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title abstract description 34
- 229910052742 iron Inorganic materials 0.000 title abstract description 16
- 238000000137 annealing Methods 0.000 claims abstract description 26
- 239000011521 glass Substances 0.000 claims abstract description 17
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 7
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 6
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 6
- 239000000843 powder Substances 0.000 claims abstract description 6
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 6
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims abstract description 5
- 229910052751 metal Inorganic materials 0.000 claims abstract description 5
- 239000011248 coating agent Substances 0.000 claims description 21
- 238000000576 coating method Methods 0.000 claims description 21
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 19
- 229910001224 Grain-oriented electrical steel Inorganic materials 0.000 claims description 7
- 150000001875 compounds Chemical class 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 4
- 239000010953 base metal Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 20
- 239000000126 substance Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 12
- 230000005381 magnetic domain Effects 0.000 description 10
- 239000000047 product Substances 0.000 description 8
- 238000007670 refining Methods 0.000 description 8
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 6
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 6
- 238000005096 rolling process Methods 0.000 description 6
- 239000011162 core material Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005097 cold rolling Methods 0.000 description 2
- 229910052839 forsterite Inorganic materials 0.000 description 2
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
- C21D8/12—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties
- C21D8/1294—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of articles with special electromagnetic properties involving a localized treatment
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Manufacturing & Machinery (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing Of Steel Electrode Plates (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、磁気特性に優れた一方向性電磁鋼板の製造方
法に関し、さらに詳しくは、歪取り焼鈍を施しても磁気
特性が劣化しない巻鉄芯用の一方向性電磁鋼板の製造方
法に関する。[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a method for manufacturing a unidirectional electrical steel sheet with excellent magnetic properties, and more specifically, to a method for manufacturing a grain-oriented electrical steel sheet with excellent magnetic properties, and more specifically, a method for manufacturing a grain-oriented electrical steel sheet with excellent magnetic properties. The present invention relates to a method for manufacturing a unidirectional electrical steel sheet for iron cores.
方向性電磁鋼板は、Ｓｉを４％以下、通常、３％程度含
有する溶鋼を連続鋳造によって或は造塊後分塊圧延する
ことによってスラブとし、これを熱間圧延して熱延板と
しだ後直ちに或は焼鈍工程を経て、１回または中間焼鈍
を介挿する２回の冷間圧延工程によって最終板厚とし、
次いで、脱炭焼鈍、焼鈍分離剤塗布を行った後仕上焼鈍
を施すプロセスによって製造されている。Grain-oriented electrical steel sheets are made by continuous casting of molten steel containing Si of 4% or less, usually around 3%, or by blooming and rolling after ingot making into slabs, which are then hot-rolled into hot-rolled sheets. Immediately or after an annealing process, the final plate thickness is achieved by one or two cold rolling processes with intermediate annealing,
Next, it is manufactured by a process of performing decarburization annealing, applying an annealing separation agent, and then performing finish annealing.
一方向性電磁鋼板の結晶集合組織は、圧延方向に磁化容
易軸が揃ったゴス組織と呼ばれる（１００ ）＜００１
＞方位を有する組織であって、各種の配電用の鉄芯材
料として広く使用されている。このような一方向性電磁
鋼板を変圧器等の鉄芯材料として使用するに際しては、
積層して使用するのが一般的であり、要求される磁気特
性として鉄損特性および励磁特性が（憂れていことなら
びに、皮膜特性として渦電流損を小さくするために鋼板
表面に電気絶縁性の高い皮膜を均一に有していることが
要求される。The crystal texture of unidirectional electrical steel sheets is called a Goss structure in which the axis of easy magnetization is aligned in the rolling direction (100)<001
＞It has an oriented structure and is widely used as an iron core material for various types of power distribution. When using such unidirectional electrical steel sheets as core materials for transformers, etc.,
Generally, they are used in a laminated manner, and the required magnetic properties include iron loss properties and excitation properties. It is required to have a uniform high film thickness.
一方向性電磁鋼板に要求される磁気特性の中で、わけて
も鉄損特性は重要であり、鉄損の低下に対しては多大な
努力が払われ、多くの提案がなされてきた。Among the magnetic properties required of unidirectional electrical steel sheets, iron loss characteristics are especially important, and great efforts have been made and many proposals have been made to reduce iron loss.
たとえば、鉄損を低下させるために、鋼中のＳｉ含有量
を多くすることや、二次再結晶粒のゴス方位集積度を高
くすること或は二次再結晶粒を小さくする等の手段が採
られてきた。また、板厚を薄くする方法も採られてきた
。For example, in order to reduce iron loss, measures such as increasing the Si content in the steel, increasing the Goss orientation integration degree of secondary recrystallized grains, or reducing the size of secondary recrystallized grains are available. It has been taken. In addition, methods of reducing the plate thickness have also been adopted.
近年、製品板の二次再結晶粒の磁区細分化によって鉄損
を低下せしめる方法が提案された。たとえば、特公昭５
７−２２５２号公報には、最終製品板表面に圧延方向に
実質的に直角方向にレーザービームを数ｍｍ間隔に照射
し、鉄板表面に高転位密度領域を導入することにより磁
区幅を細分化し、鉄損を低下せしめる技術が提案されて
いる。In recent years, a method has been proposed to reduce iron loss by refining the magnetic domains of secondary recrystallized grains in product sheets. For example,
Publication No. 7-2252 discloses that the magnetic domain width is subdivided by irradiating the surface of the final product plate with a laser beam at intervals of several mm in a direction substantially perpendicular to the rolling direction to introduce high dislocation density regions on the surface of the iron plate. Techniques have been proposed to reduce iron loss.
また、本発明者等は、特開昭６１−１３９６８０号公報
に、最＃製品板の表面皮膜の一部をレーザー照射等によ
って除去し、可侵入体金属を鍍金し加熱処理することに
より銅板中に侵入体を形成し、これによって磁区幅を細
分化することを提案した。この方法によれば、その後の
熱処理（たとえば歪取焼鈍）によっても磁区幅細分化効
果を消失することはなく、むしろ向上する。In addition, the present inventors have disclosed in Japanese Patent Application Laid-open No. 61-139680 that a part of the surface film of the latest product plate is removed by laser irradiation, and a penetrant metal is plated and heat-treated to form a copper plate. We proposed that the magnetic domain width be subdivided by forming interstitial bodies. According to this method, the effect of refining the domain width does not disappear even with subsequent heat treatment (for example, strain relief annealing), but rather improves it.
さらに、特開昭６１−２４６３７６号公報には、一方向
性電磁鋼板の表面皮膜を構成する通常のフォルステライ
ト皮膜の上に、磁気特性或は表面皮膜改善の目的で形成
される張力付与型コーティングを施すに際し、張力付与
効果の異なる領域を区画形成することにより、鋼板の磁
区細分化が助長されるとの提案がなされている。Furthermore, JP-A No. 61-246376 discloses a tension-applying coating that is formed on a normal forsterite film that constitutes the surface film of a unidirectional electrical steel sheet for the purpose of improving magnetic properties or the surface film. It has been proposed that the magnetic domain refining of the steel sheet is facilitated by forming zones with different tension imparting effects.
特開昭６０−１０３１８３号公報には、歪取焼鈍を施し
ても磁気特性が劣化しない一方向性電磁鋼板の製造方法
として、鋼板面内で局所的にフォルステライトとは組成
の異なるグラス皮膜からなる領域を存在させることが、
製品の磁区細分化に有利であること、そしてかような異
質のグラス皮膜領域の存在下に張力付与型の絶縁皮膜を
形成すると、両者の複合作用によって効果が一層助長さ
れると指摘されている。ここでは、異質のグラス皮膜領
域の幅は０．０５〜２．０ ｍｍ程度でその間隔は１．
０〜３．０ｍｍであることが、効果を大ならしめるとさ
れている。JP-A No. 60-103183 discloses a method for manufacturing a unidirectional electrical steel sheet whose magnetic properties do not deteriorate even when subjected to strain relief annealing, in which a glass film having a composition different from forsterite is locally formed within the surface of the steel sheet. To create a realm of
It has been pointed out that this is advantageous in refining the magnetic domains of products, and that if a tension-applying insulating film is formed in the presence of such a heterogeneous glass film region, the combined effect of the two will further enhance the effect. . Here, the width of the heterogeneous glass film region is about 0.05 to 2.0 mm, and the interval is 1.
It is said that a thickness of 0 to 3.0 mm increases the effect.
叙上の各技術は、何れも磁区細分化効果により鉄損特性
を改善するものであり、それなりの効果をもたらすであ
ろう。Each of the above-mentioned techniques improves iron loss characteristics through the effect of magnetic domain refining, and will bring about certain effects.
しかしながら、これら鉄損特性改善のための技術は、電
磁鋼板の歪取焼鈍によって磁区細分化効果を喪失したり
、製造コストが高かったり或は、特開昭６１−２４６３
７６号公報や特開昭６０−１０３１８３号公報に開示さ
れている技術のように、工業的な実施が極めて困難であ
るといった問題を有している。However, these techniques for improving iron loss characteristics have problems such as loss of magnetic domain refining effect due to strain relief annealing of electrical steel sheets, high manufacturing costs, or
As with the techniques disclosed in Japanese Patent Publication No. 76 and Japanese Patent Laid-Open No. 60-103183, there is a problem that industrial implementation is extremely difficult.
本発明は、上に述べた従来技術における問題点を解決し
、鉄損特性に優れた一方向性電磁鋼板を低コスト乍に安
定して製造することができる方法を提供することを目的
としてなされた。The present invention has been made for the purpose of solving the above-mentioned problems in the prior art and providing a method that can stably produce grain-oriented electrical steel sheets with excellent iron loss characteristics at low cost. Ta.
本発明の特徴とする処は、仕上焼鈍後の、或は仕上焼鈍
後絶縁皮膜を塗布された一方向性電磁鋼板のグラス皮膜
或はグラス皮膜および絶縁皮膜を、鋼板の面内で局所的
に除去して地鉄を露出せしめた後Ｖ 、 Ｍｏ、 Ｃｒ
、 Ｔｉ、 Ｎｂの金属粉末或はその化合物を単独或は
複合して塗布或は鍍金し、７００℃以上の温度で焼鈍し
た後１０Ｏｅ以上の磁場中で冷却すること、又は、前記
の１０００以上の磁場中で冷却した後さらに鋼板表面に
絶縁性の皮膜処理を施すことを特徴とする鉄損の低い一
方向性電磁鋼板の製造方法にある。A feature of the present invention is that the glass coating or the glass coating and the insulation coating of a unidirectional electrical steel sheet after finish annealing or to which an insulating coating has been applied after finish annealing is applied locally within the plane of the steel plate. After removing and exposing the base metal, V, Mo, Cr
, Ti, Nb metal powder or a compound thereof is coated or plated singly or in combination, annealed at a temperature of 700°C or higher, and then cooled in a magnetic field of 10 Oe or higher, or the above-mentioned 1000 or higher The present invention provides a method for producing a grain-oriented electrical steel sheet with low core loss, which comprises further applying an insulating film treatment to the surface of the steel sheet after cooling in a magnetic field.
以下に、本発明の詳細な説明する。The present invention will be explained in detail below.
発明者等は、歪取焼鈍を施しても磁区細分化効果を喪失
しない技術的手段について研究を進めた結果、方向性電
磁鋼板の表面層にＶ 、 Ｍｏ、 Ｃｒ。The inventors conducted research on technical means that would not lose the magnetic domain refining effect even after strain relief annealing, and as a result, they added V, Mo, and Cr to the surface layer of grain-oriented electrical steel sheets.
Ｔｉ等（滲透元素）を拡散させた後、磁場中でこれら元
素の炭化物或は窒化物を析出させることによって、歪取
焼鈍を施してもその効果を喪失しない磁区細分化が可能
であることを知見した。By diffusing Ti, etc. (permeable elements) and then precipitating carbides or nitrides of these elements in a magnetic field, it is possible to refine magnetic domains without losing the effect even after strain relief annealing. I found out.
先ず、本発明を適用する電磁鋼板の成分系について説明
する。First, the composition system of the electrical steel sheet to which the present invention is applied will be explained.
Ｃは、５０ｐｐｍ以下でなければならない。Ｃが５３ｐ
ｐｍを超えると、本発明で目的とする低い水準の鉄損特
性を有する製品が得られない。C must be below 50 ppm. C is 53p
If it exceeds pm, it will not be possible to obtain a product having the low level of iron loss characteristics aimed at by the present invention.
Ｓｉ は、４．０％以下の範囲で含有せしめる。Si is contained in a range of 4.0% or less.
Ｓｌは、電磁鋼板の固有抵抗を高め鉄損特性を良好なら
しめるに有効な元素であるけれども、４．０％を超えて
含有せしめると、製造過程にあって冷間圧延を極めて困
難なものにする。Although Sl is an effective element for increasing the resistivity of electrical steel sheets and improving iron loss properties, if it is contained in excess of 4.0%, it will make cold rolling extremely difficult during the manufacturing process. do.
かかる成分系の、仕上焼鈍後の、或は仕上焼鈍機絶縁皮
膜を塗布された一方向性電磁鋼板のグラス皮膜或はグラ
ス皮膜および絶縁皮膜を、鋼板の面内で局所的に除去す
る手段は、機械的、化学的（酸洗等）、物理的（レーザ
照射等）何れの方法によってもよい。Means for locally removing the glass coating or the glass coating and the insulating coating of a unidirectional electrical steel sheet after final annealing or coated with a final annealing insulating coating of such a component system within the plane of the steel sheet is , mechanical, chemical (pickling, etc.), or physical (laser irradiation, etc.) methods may be used.
このようにして鋼板の面内で局所的に鋼板のグラス皮膜
或はグラス皮膜および絶縁皮膜を除去した鋼板に、Ｖ
１Ｍｏ、Ｃｒ、Ｔｉ、Ｎｂの金属粉末或はその化合物を
単独に或は複合して塗布若しくは鍍金する。然る後、７
００℃以上の温度域で鋼板を焼鈍（加熱処理）し、次い
で１０Ｏｅ（エルステッド）以上の磁場中で冷却する。In this way, V
Metal powders of 1Mo, Cr, Ti, and Nb or their compounds are applied or plated singly or in combination. After that, 7
A steel plate is annealed (heat treated) in a temperature range of 00° C. or higher, and then cooled in a magnetic field of 10 Oe (Oersted) or higher.
ここで、加熱処理後の鋼板を１０Ｏｅ （エルステッド
）以上の磁場中で冷却するようにした理由を説明する。Here, the reason why the steel plate after heat treatment is cooled in a magnetic field of 10 Oe (Oersted) or more will be explained.
Ｃ： ２５ｐｐｍを含有する０、２３＋ｎｍ厚さの仕上
焼鈍後の一方向性電磁鋼板の、表面皮膜（グラス皮膜）
を、レーザ照射によって鋼板の圧延方向に直角な方向に
幅１罷の線状に５ ＋ｎｍ間隔で剥離した。然る後、Ｃ
ｒ鍍金を施し、次いで９００℃で１０分間の焼鈍（加熱
処理）を行った後、磁場中で冷却した。C: Surface film (glass film) of a unidirectional electrical steel sheet after finish annealing with a thickness of 0.23+nm containing 25 ppm
was peeled off by laser irradiation in a direction perpendicular to the rolling direction of the steel plate in the form of one strip of width at intervals of 5 + nm. After that, C.
R plating was performed, and then annealing (heat treatment) was performed at 900° C. for 10 minutes, followed by cooling in a magnetic field.
この鋼板に、燐酸と無水クロム酸を主成分とするコーテ
イング液を塗布し、８３０℃で焼き付けた。A coating liquid containing phosphoric acid and chromic anhydride as main components was applied to this steel plate and baked at 830°C.
このとき′の磁場の強さと製品の鉄損の関係を、第１図
に示す。The relationship between the strength of the magnetic field and the core loss of the product at this time is shown in Figure 1.
磁場の強さを１０Ｏｅ（エルステッド）以上として加熱
処理後の鋼板を冷却することにより、鉄損低減効果を大
ならしめ得ることが明らかである。It is clear that the iron loss reduction effect can be increased by cooling the steel plate after heat treatment by setting the magnetic field strength to 10 Oe (Oersteds) or more.
〔実施例〕
実施例１
０、２３ ［Ｉｌｍ厚さに仕上げた一方向性電磁鋼板（
Ｃ含有量： １５ｐｐｍ）を、次の２通りの条件で処理
した。[Example] Example 1 0, 23 [Unidirectional electrical steel sheet finished to Ilm thickness (
C content: 15 ppm) was treated under the following two conditions.
第１の条件のものは、仕上焼鈍後の鋼板の表面皮膜を酸
洗によって、鋼板の圧延方向に直角な方向に１．０叩幅
の線状に５．０ ｍ＋＋＋間隔で局部的に除去した。In the first condition, the surface film of the steel plate after finish annealing was locally removed by pickling at linear intervals of 5.0 m+++ with a stroke width of 1.0 in the direction perpendicular to the rolling direction of the steel plate. .
然る後、地鉄部にＶ２Ｏ５を水に溶いたものを塗布し次
いで、１，０００℃の炉に装入し５分間焼鈍（加熱処理
）した後、１００Ｏｅ （エルステッド）の磁場をかけ
ながら常温まで、２００℃／ｈｒの冷却速度で冷却した
。このときの雰囲気は、）（２： ７５％、Ｎ２： ２
５％の混合ガスであった。After that, a solution of V2O5 in water was applied to the steel base, and then it was placed in a 1,000℃ furnace and annealed (heated) for 5 minutes, and then heated at room temperature while applying a 100Oe (Oersted) magnetic field. It was cooled at a cooling rate of 200° C./hr. The atmosphere at this time was ) (2: 75%, N2: 2
It was a 5% mixed gas.
こうして得られた鋼板に、燐酸と無水クロム酸を主成分
とするコーテイング液を塗布し、８４０℃で３０秒間の
焼き付は処理を施した。A coating liquid containing phosphoric acid and chromic anhydride as main components was applied to the thus obtained steel plate, and baked at 840° C. for 30 seconds.
第２の条件のものは、比較材として、無処理の鋼板に前
記のものと同一のコーティング処理を施した。For the second condition, as a comparison material, an untreated steel plate was subjected to the same coating treatment as above.
これら２つの条件で処理して得られた製品の磁気特性を
、次に示す。The magnetic properties of the products obtained by processing under these two conditions are shown below.
実施例２
０．１８＋ｎｍに仕上げた一方向性電磁鋼板（Ｃ含有量
＝１ｏｐｐｍ、グラス皮膜付）の表面皮膜を、レーザ照
射によって鋼板の圧延方向に直角な方向に、１、 Ｏｍ
ｍ幅の線状に５．０闘間隔で局部的に除去した。Example 2 A surface film of a unidirectional electrical steel sheet (C content = 1 oppm, with glass film) finished to 0.18+nm was irradiated with a laser to a direction perpendicular to the rolling direction of the steel sheet to a thickness of 1,000 nm.
It was locally removed in a line of m width at 5.0 mm intervals.
然る後、地鉄部にそれぞれ（ａ）ＮｂＯｌ（ｂ）Ｔｉｎ
、（Ｃ）Ｍｏ３を塗布し次いて、１．０００℃で１０分
間の焼鈍（加熱処理）を施した後、２０００Ｃ（エルス
テッド）の磁場中で常温まで、２００℃／ ｈ ｒの冷
却速度で冷却した。このときの雰囲気は、Ｈ２：１００
％、のｅガスであった。After that, (a) NbOl (b) Tin was installed in the subway department.
, (C) Mo3 was applied, and then annealed (heated) at 1.000℃ for 10 minutes, and then cooled to room temperature in a 2000C (Oersted) magnetic field at a cooling rate of 200℃/hr. did. The atmosphere at this time was H2:100
%, of e-gas.
こうして得られた鋼板に、燐酸、無水クロム酸を主成分
とするコーテイング液を塗布し、８４０℃で３０秒間の
焼き付は処理を施した。A coating liquid containing phosphoric acid and chromic anhydride as main components was applied to the thus obtained steel plate, and baked at 840° C. for 30 seconds.
比較材として、磁区細分化をしない通常処理を施したも
のを準備した。As a comparative material, we prepared a material subjected to normal treatment without magnetic domain refining.
これらの処理によって得られた製品の磁気特注を、次に
示す。The magnetic customization of the products obtained by these processes is shown below.
本発明は、以上述べたように構成しかつ、作用せしめる
ようにしたから、極めて簡潔なプロセスで、歪取焼鈍を
施してもその効果が喪失しない磁気特性に優れた一方向
性電磁鋼板を低コスト下に製造できる。Since the present invention is constructed and operated as described above, it is possible to produce a unidirectional electrical steel sheet with excellent magnetic properties, which does not lose its effect even after strain relief annealing, through an extremely simple process. Can be manufactured at low cost.
第１図は、本発明を実施するときの、鋼板の磁場中冷却
における磁場の強さと、得られる製品の鉄損値の関係を
示す図である。FIG. 1 is a diagram showing the relationship between the magnetic field strength during cooling of a steel plate in a magnetic field and the core loss value of the obtained product when carrying out the present invention.
Claims (1)
た一方向性電磁鋼板のグラス皮膜或はグラス皮膜および
絶縁皮膜を、鋼板の面内で局所的に除去して地鉄を露出
せしめた後、Ｖ、Ｍｏ、Ｃｒ、Ｔｉ、Ｎｂの金属粉末或
はその化合物を単独或は複合して塗布或は鍍金し、７０
０℃以上の温度で焼鈍した後１０Ｏｅ以上の磁場中で冷
却することを特徴とする鉄損の低い一方向性電磁鋼板の
製造方法。 ２）仕上焼鈍後の、或は仕上焼鈍後絶縁皮膜を塗布され
た一方向性電磁鋼板のグラス皮膜或はグラス皮膜および
絶縁皮膜を、鋼板の面内で局所的に除去して地鉄を露出
せしめた後、Ｖ、Ｍｏ、Ｃｒ、Ｔｉ、Ｎｂの金属粉末或
はその化合物を単独或は複合して塗布或は鍍金し、７０
０℃以上の温度で焼鈍した後１０Ｏｅ以上の磁場中で冷
却した後さらに鋼板表面に絶縁性の皮膜処理を施すこと
を特徴とする鉄損の低い一方向性電磁鋼板の製造方法。[Claims] 1) Locally removing the glass coating or the glass coating and the insulation coating within the plane of the steel sheet of a unidirectional electrical steel sheet after final annealing or to which an insulation coating has been applied after final annealing. After exposing the base metal, V, Mo, Cr, Ti, Nb metal powder or a compound thereof is applied or plated, either alone or in combination.
A method for producing a grain-oriented electrical steel sheet with low core loss, which comprises annealing at a temperature of 0° C. or higher and then cooling in a magnetic field of 10 Oe or higher. 2) After final annealing, or after final annealing, the glass coating or glass coating and insulation coating of a unidirectional electrical steel sheet to which an insulating coating has been applied is removed locally within the plane of the steel plate to expose the base metal. After this, V, Mo, Cr, Ti, Nb metal powder or a compound thereof is applied or plated to 70%.
A method for producing a unidirectional electrical steel sheet with low core loss, which comprises annealing at a temperature of 0° C. or higher, cooling in a magnetic field of 10 Oe or higher, and then applying an insulating film treatment to the surface of the steel sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4071588A JPH01309922A (en) | 1988-02-25 | 1988-02-25 | Production of grain-oriented magnetic steel sheet having low iron loss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4071588A JPH01309922A (en) | 1988-02-25 | 1988-02-25 | Production of grain-oriented magnetic steel sheet having low iron loss |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01309922A true JPH01309922A (en) | 1989-12-14 |
Family
ID=12588282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4071588A Pending JPH01309922A (en) | 1988-02-25 | 1988-02-25 | Production of grain-oriented magnetic steel sheet having low iron loss |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01309922A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100276328B1 (en) * | 1996-12-21 | 2000-12-15 | 이구택 | The manufacturing method for non oriented electric steelsheet with low hysterisis |
| US7307418B2 (en) * | 2003-05-06 | 2007-12-11 | Sri International | Systems for recording position information in a magnetic layer on a piston rod |
| US7755350B2 (en) | 2005-04-13 | 2010-07-13 | Sri International | System and method of perpendicularly magnetizing position information in a magnetically hard layer of a moving component |
| US8970208B2 (en) | 2010-02-11 | 2015-03-03 | Sri International | Displacement measurement system and method using magnetic encodings |
-
1988
- 1988-02-25 JP JP4071588A patent/JPH01309922A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100276328B1 (en) * | 1996-12-21 | 2000-12-15 | 이구택 | The manufacturing method for non oriented electric steelsheet with low hysterisis |
| US7307418B2 (en) * | 2003-05-06 | 2007-12-11 | Sri International | Systems for recording position information in a magnetic layer on a piston rod |
| US7755350B2 (en) | 2005-04-13 | 2010-07-13 | Sri International | System and method of perpendicularly magnetizing position information in a magnetically hard layer of a moving component |
| US8970208B2 (en) | 2010-02-11 | 2015-03-03 | Sri International | Displacement measurement system and method using magnetic encodings |
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