JP2011090456A - Order receiving and shipping method for grain oriented magnetic steel sheet for transformer - Google Patents
Order receiving and shipping method for grain oriented magnetic steel sheet for transformer Download PDFInfo
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 38
- 239000010959 steel Substances 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims description 12
- 239000011248 coating agent Substances 0.000 claims abstract description 20
- 238000000576 coating method Methods 0.000 claims abstract description 20
- 230000005284 excitation Effects 0.000 claims abstract description 17
- 230000004907 flux Effects 0.000 claims abstract description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 36
- 229910001224 Grain-oriented electrical steel Inorganic materials 0.000 claims description 35
- 239000011229 interlayer Substances 0.000 claims description 27
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 23
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 230000003746 surface roughness Effects 0.000 claims description 7
- 238000013016 damping Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000010410 layer Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
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Abstract
Description
本発明は、トランス用方向性電磁鋼板の受注・出荷方法に関し、特にトランス用の方向性電磁鋼板を受注した場合に、要望特性を満足する方向性電磁鋼板を選択するだけでなく、発注者に対して、トランス組立時における好適使用形態を付加して出荷しようとするものである。 The present invention relates to an ordering / shipping method for grain-oriented electrical steel sheets for transformers, and in particular, when ordering grain-oriented electrical steel sheets for transformers, not only to select a grain-oriented electrical steel sheet that satisfies the desired characteristics, but also to an orderer. On the other hand, it is intended to ship after adding a suitable use form at the time of assembling the transformer.
方向性電磁鋼板の主用途として、積層型のトランス（鉄心）が挙げられる。かようなトランスでは、その低騒音化が求められているが、かかる騒音は鉄心の素材である電磁鋼板が交流磁化される際に生じる磁歪に起因する。 The main application of grain-oriented electrical steel sheets is a laminated transformer (iron core). Such a transformer is required to reduce noise, but such noise is caused by magnetostriction generated when an electromagnetic steel sheet, which is a material of an iron core, is AC magnetized.
そこで、従来から、低騒音化のために磁歪の小さな電磁鋼板の開発が積極的に行われている。そして、実際的な騒音は、高調波成分が問題になることが多いことから、最近では特に磁歪高調波の低減に力が注がれている。 Therefore, conventionally, development of an electromagnetic steel sheet having a small magnetostriction has been actively carried out in order to reduce noise. In practical noise, harmonic components often become a problem, and recently, efforts have been made to reduce magnetostrictive harmonics.
例えば、特許文献１の従来技術の欄に記載されているように、鋼板表面に張力付与コーティングを施し、鋼板面内に張力を付与することによって、磁歪の低減を図っている。また、特許文献１では、電磁鋼板を積層して鉄心を製造する際に、鋼板面内に張力が付与されるように構造に工夫を加えることによって、さらなる磁歪の低減を図っている。 For example, as described in the prior art column of Patent Document 1, magnetostriction is reduced by applying a tension applying coating to the steel sheet surface and applying tension in the steel sheet surface. Moreover, in patent document 1, when laminating | stacking an electromagnetic steel plate and manufacturing an iron core, further reduction of magnetostriction is aimed at by adding a device to a structure so that tension | tensile_strength is provided in a steel plate surface.
従来、トランス製造者（発注者）からトランス用素材として低磁歪の電磁鋼板が発注された場合、電磁鋼板の製造者（受注者）は、トランスの詳細仕様とは無関係に、単板としての磁歪特性に優れた素材を選択し、または磁歪特性を高めた素材を新たに開発・製造して、トランス製造者に出荷していた。 Conventionally, when a transformer manufacturer (orderer) orders a low magnetostrictive electrical steel sheet as a transformer material, the manufacturer of the electrical steel sheet (ordering party) has the magnetostriction as a single plate regardless of the detailed specifications of the transformer. A material with excellent characteristics was selected, or a material with improved magnetostriction characteristics was newly developed and manufactured, and shipped to the transformer manufacturer.
しかしながら、かかる素材は、単板としての磁歪特性には優れていても、これを積層して鉄心とした場合に、磁歪振動が最小化されて優れた磁歪特性を発現する、すなわち低騒音化が達成される保証はない。
というのは、トランス仕様が異なれば、励磁周波数や磁束密度が異なるため、鉄心を構成する単板における磁歪も当然異なり、結果として、鉄心の振動挙動すなわち積層間の滑りやガタの発生の仕方も一様ではないからである。
However, even if such a material is excellent in magnetostriction characteristics as a single plate, when it is laminated to form an iron core, magnetostriction vibration is minimized and excellent magnetostriction characteristics are expressed, that is, noise reduction is achieved. There is no guarantee that will be achieved.
This is because, if the transformer specifications are different, the excitation frequency and the magnetic flux density are different, so the magnetostriction of the single plate that constitutes the iron core is naturally different. Because it is not uniform.
本発明は、上記の現状に鑑み開発されもので、トランス用の低磁歪方向性電磁鋼板を受注した場合に、トランスの仕様に応じて、単板での磁歪特性だけでなく、鉄心としての振動特性が最適となるような電磁鋼板を選択または製造し、この電磁鋼板をその好適使用形態と共に発注者に出荷することからなる、トランス用方向性電磁鋼板の受注・出荷方法を提案することを目的とする。 The present invention has been developed in view of the above situation, and when an order is received for a low magnetostrictive grain-oriented electrical steel sheet for a transformer, not only the magnetostrictive characteristics of a single plate but also the vibration as an iron core according to the specifications of the transformer. The purpose is to propose an ordering / shipping method for directional electrical steel sheets for transformers, which consists of selecting or manufacturing electrical steel sheets with optimal characteristics, and shipping the electrical steel sheets together with their preferred modes of use to orderers. And
すなわち、本発明の要旨構成は次のとおりである。
１．トランス用方向性電磁鋼板の注文を受け付けるための受注装置と、この受注装置に接続された、種々のグレードの方向性電磁鋼板に関する情報を格納した情報データベースとを有する方向性電磁鋼板の受注システムを用いて、トランス用方向性電磁鋼板をトランス仕様と共に受注し、出荷する方法であって、
上記トランス仕様に基づいて求めた、鉄心として積層した際の磁歪振動を最小化する最適鉄心締付力、あるいは鉄心締付力の適正範囲を添付して電磁鋼板を出荷することを特徴とするトランス用方向性電磁鋼板の受注・出荷方法。
That is, the gist configuration of the present invention is as follows.
1. An order receiving system for grain-oriented electrical steel sheets having an order receiving device for receiving orders for grain-oriented electrical steel sheets for transformers and an information database connected to the order receiving device and storing information on various grades of grain-oriented electrical steel sheets It is a method of receiving an order for a grain-oriented electrical steel sheet for transformer together with a transformer specification, and shipping it.
A transformer characterized by shipping an electromagnetic steel sheet with an optimum core tightening force or an appropriate range of iron core tightening force that minimizes magnetostriction vibration when laminated as an iron core, obtained based on the above transformer specifications. Ordering / shipping methods for directional electrical steel sheets.
２．トランス用方向性電磁鋼板の注文を受け付けるための受注装置と、この受注装置に接続された、被膜の表面粗さ情報を含む種々のグレードの方向性電磁鋼板に関する情報を格納した情報データベースとを有する方向性電磁鋼板の受注システムを用いて、トランス用方向性電磁鋼板をトランス仕様と共に受注し、出荷する方法であって、
(1) 上記トランス仕様に基づいて、励磁周波数と磁束密度を推定し、
(2) 上記の推定した励磁周波数と磁束密度に基づいて単板としての磁歪特性を求め、その要件を満足する電磁鋼板を選択または製造し、
(3) 上記の磁歪特性に基づき、鉄心として積層した際の磁歪振動を推定し、
(4) 上記の推定した磁歪振動を最小化する摩擦力（＝層間摩擦係数×鉄心締付力を求め、
(5) 上記した層間摩擦係数の目標値を定め、その値になるような被膜を選択または鋼板の表面に形成し、
(6) 上記被膜の実際の摩擦係数に基づき最適鉄心締付力を求め、
上記(2)，(5)で選択または製造した適正被膜をそなえる電磁鋼板を、上記(6)で求めた最適鉄心締付力を添付して出荷することを特徴とするトランス用方向性電磁鋼板の受注・出荷方法。
2. An order receiving device for receiving an order for a grain-oriented electrical steel sheet for transformers, and an information database connected to the order receiving device and storing information on various grades of grain-oriented electrical steel sheets including surface roughness information of the coating Using the ordering system for grain-oriented electrical steel sheets, ordering and shipping transformer-oriented grain-oriented electrical steel sheets together with transformer specifications,
(1) Estimate excitation frequency and magnetic flux density based on the above transformer specifications,
(2) Obtain magnetostriction characteristics as a single plate based on the estimated excitation frequency and magnetic flux density, and select or manufacture an electromagnetic steel sheet that satisfies the requirements,
(3) Based on the above magnetostriction characteristics, estimate the magnetostrictive vibration when laminated as an iron core,
(4) Friction force that minimizes the estimated magnetostrictive vibration (= interlayer friction coefficient x iron core clamping force)
(5) Determine the target value of the above-mentioned interlaminar friction coefficient, select a film to be that value or form it on the surface of the steel sheet,
(6) Obtain the optimum core tightening force based on the actual friction coefficient of the coating,
A directional electrical steel sheet for transformers, wherein the electrical steel sheet having the appropriate coating selected or manufactured in (2) and (5) above is shipped with the optimum core tightening force determined in (6) above. Order / shipment method.
３．トランス用方向性電磁鋼板の注文を受け付けるための受注装置と、この受注装置に接続された、被膜の表面粗さ情報を含む種々のグレードの方向性電磁鋼板に関する情報を格納した情報データベースとを有する方向性電磁鋼板の受注システムを用いて、トランス用方向性電磁鋼板をトランス仕様と共に受注し、出荷する方法であって、
上記トランス仕様が、使用する励磁周波数と磁束密度を含む場合に、
(2)′上記の励磁周波数と磁束密度に基づいて単板としての磁歪特性を求め、その要件を満足する電磁鋼板を選択または製造し、
(3) 上記の磁歪特性に基づき、鉄心として積層した際の磁歪振動を推定し、
(4) 上記の推定した磁歪振動を最小化する摩擦力（＝層間摩擦係数×鉄心締付力）を求め、
(5) 上記した層間摩擦係数の目標値を定め、その値になるような被膜を選択または板の表面に形成し、
(6) 上記被膜の実際の摩擦係数に基づき最適鉄心締付力を求め、
上記(2)′，(5)で選択または製造した適正被膜をそなえる電磁鋼板を、上記(6)で求めた最適鉄心締付力を添付して出荷することを特徴とするトランス用方向性電磁鋼板の受注・出荷方法。
3. An order receiving device for receiving an order for a grain-oriented electrical steel sheet for transformers, and an information database connected to the order receiving device and storing information on various grades of grain-oriented electrical steel sheets including surface roughness information of the coating Using the ordering system for grain-oriented electrical steel sheets, ordering and shipping transformer-oriented grain-oriented electrical steel sheets together with transformer specifications,
When the above transformer specifications include the excitation frequency and magnetic flux density to be used,
(2) ′ Obtain magnetostrictive characteristics as a single plate based on the above excitation frequency and magnetic flux density, and select or manufacture an electromagnetic steel sheet that satisfies the requirements,
(3) Based on the above magnetostriction characteristics, estimate the magnetostrictive vibration when laminated as an iron core,
(4) Find the frictional force that minimizes the estimated magnetostrictive vibration (= interlayer friction coefficient × iron core clamping force)
(5) The target value of the above-mentioned interlayer friction coefficient is determined, and a film is selected or formed on the surface of the plate to achieve that value.
(6) Obtain the optimum core tightening force based on the actual friction coefficient of the coating,
Directional electromagnetic for transformers, characterized in that the electromagnetic steel sheet having the appropriate coating selected or manufactured in (2) 'and (5) above is shipped with the optimum core tightening force obtained in (6) above. How to order and ship steel plates.
本発明によれば、トランス用の方向性電磁鋼板を受注した場合に、単板として適正な磁歪特性を有する電磁鋼板を単に出荷するのではなく、実際の使用に供して最適な鉄心締付力も併せて送付するので、発注者がトランスを製造した場合に、従来に比べて格段の低騒音化を図ることができる。 According to the present invention, when an order for a grain-oriented electrical steel sheet for a transformer is received, an electromagnetic steel sheet having an appropriate magnetostrictive characteristic as a single plate is not simply shipped, but the optimum core tightening force for actual use is also provided. Since they are also sent together, when the orderer manufactures a transformer, it is possible to achieve much lower noise than in the past.
本発明は、トランス用方向性電磁鋼板を、トランス仕様と共に受注した場合に、単に適切な電磁鋼板を選定して出荷するのではなく、トランス仕様に基づいて求めた、鉄心として積層した際の磁歪振動を最小化する最適鉄心締付力、あるいは鉄心締付力の適正範囲を添付して出荷することを特徴とするトランス用方向性電磁鋼板の受注・出荷方法である。 In the present invention, when a directional electrical steel sheet for transformer is ordered together with a transformer specification, the magnetostriction when laminated as an iron core is obtained based on the transformer specification, rather than simply selecting and shipping an appropriate electromagnetic steel sheet. This is an ordering / shipping method for grain oriented electrical steel sheets for transformers, which is shipped with an optimum core tightening force that minimizes vibration or an appropriate range of iron core tightening force.
以下、本発明を図面に従い具体的に説明する。
図１に、本発明の実施に用いて好適な、トランス用方向性電磁鋼板の受注・出荷システムを示す。
図中、Ａは発注者（トランス製造者）側の態様であり、Ｂが受注者（電磁鋼板製造者）側の態様である。
発注者（トランス製造者）は、態様Ａに示したとおり、トランスの具体的仕様に基づいて、所望特性を有する電磁鋼板を発注システムから発注する。
受注者（電磁鋼板製造者）は、態様Ｂに示したとおり、発注者からの発注内容（電磁鋼板のグレードおよびトランス仕様）を受注システムを介して受注する。なお、この受注システムは、被膜の表面粗さ情報を含む種々のグレードの方向性電磁鋼板に関する情報を格納した情報データベース（図示省略）と接続されている。
Hereinafter, the present invention will be specifically described with reference to the drawings.
FIG. 1 shows an order receiving / shipping system for a grain-oriented electrical steel sheet for a transformer suitable for use in the present invention.
In the figure, A is an aspect on the orderer (transformer manufacturer) side, and B is an aspect on the contractor (electromagnetic steel sheet manufacturer) side.
As shown in aspect A, the orderer (transformer manufacturer) orders an electrical steel sheet having desired characteristics from the ordering system based on the specific specifications of the transformer.
As shown in aspect B, the contractor (the electromagnetic steel sheet manufacturer) receives the order content (the grade and transformer specification of the electrical steel sheet) from the orderer via the order receiving system. This order receiving system is connected to an information database (not shown) that stores information on various grades of grain-oriented electrical steel sheets including information on the surface roughness of the coating.
トランス仕様と共に、トランス用の方向性電磁鋼板を受注した場合、以下のようにして、電磁鋼板の仕様を決定する。
まず、添付された容量や積層数等のトランス仕様に基づいて、使用されるであろう励磁周波数と磁束密度を推定する。
ついで、推定した励磁周波数および磁束密度に基づいて、単板としての磁歪特性を求め、それに基づき電磁鋼板の仕様を決定する。
ついで、上記の電磁鋼板仕様を満足する電磁鋼板を選択または製造する。
When an order is received for a directional electrical steel sheet for a transformer together with a transformer specification, the specification of the electromagnetic steel sheet is determined as follows.
First, the excitation frequency and magnetic flux density that will be used are estimated based on the attached transformer specifications such as capacity and number of layers.
Next, based on the estimated excitation frequency and magnetic flux density, magnetostriction characteristics as a single plate are obtained, and the specifications of the electromagnetic steel sheet are determined based on the magnetostriction characteristics.
Next, an electrical steel sheet that satisfies the above-mentioned electrical steel sheet specifications is selected or manufactured.
上記のようにして所望の電磁鋼板仕様を満足する電磁鋼板を選択または製造したのち、かかる電磁鋼板を実際のトランスに組み立てる際の最適仕様を、以下のようにして求める。このように、本発明は、発注者が要望する電磁鋼板仕様を満足する電磁鋼板を単に提供するのではなく、実際にトランスに組み立てる際の最適仕様も併せて提供するところに、最大の特徴がある。 After selecting or manufacturing an electromagnetic steel sheet that satisfies the desired electromagnetic steel sheet specifications as described above, an optimum specification for assembling such an electromagnetic steel sheet into an actual transformer is obtained as follows. As described above, the present invention does not simply provide the electrical steel sheet that satisfies the electrical steel sheet specifications requested by the orderer, but also provides the optimum specifications when actually assembling the transformer. is there.
まず、電磁鋼板仕様を決定する際に利用した単板としての磁歪特性に基づき、かかる電磁鋼板を鉄心として積層した際に、鉄心を振動させる磁歪起因の起振力を推定する。
一方、積層された電磁鋼板の層間には摩擦力が働き、その層間摩擦力は、次式
層間摩擦力＝層間摩擦係数×鉄心締付力
によって求めることができる。
通常の摩擦力は、次式
摩擦力（Ｆ）＝摩擦係数（μ）×垂直抗力（Ｎ）
で表されるが、トランスの場合は、層間摩擦係数が摩擦係数（μ）に、鉄心締付力が垂直抗力（Ｎ）に相当する。
ここでは、簡単のため、図２に示すように、電磁鋼板２枚の重なりを考える。磁歪による起振力が、層間摩擦係数（この場合、静摩擦係数）×鉄心締付力で求められる層間摩擦力（この場合、静摩擦力）を上回ると、層間には滑りを生じる。そして、層間滑りがある状態では、起振力とは逆の方向、すなわち振動を抑制する方向に層間摩擦力（この場合、動摩擦力）が作用するのである。
First, based on the magnetostriction characteristics as a single plate used when determining the electromagnetic steel sheet specifications, when the electromagnetic steel sheets are laminated as an iron core, an excitation force due to magnetostriction that vibrates the iron core is estimated.
On the other hand, a friction force acts between the layers of the laminated electrical steel sheets, and the interlayer friction force can be obtained by the following formula: interlayer friction force = interlayer friction coefficient × iron core tightening force.
The normal friction force is the following formula: Friction force (F) = Friction coefficient (μ) × Vertical drag (N)
In the case of a transformer, the inter-layer friction coefficient corresponds to the friction coefficient (μ), and the iron core clamping force corresponds to the vertical drag (N).
Here, for simplicity, as shown in FIG. 2, an overlap of two electromagnetic steel sheets is considered. When the vibration force due to magnetostriction exceeds the interlayer friction force (in this case, the static friction force) obtained by the interlayer friction coefficient (in this case, the static friction coefficient) × the iron core clamping force, slip occurs between the layers. When there is interlayer slip, interlayer friction force (dynamic friction force in this case) acts in a direction opposite to the excitation force, that is, in a direction to suppress vibration.
図３に示すように、単板磁歪は面内の伸縮が支配的だが、積層され、かつボルト等による締付で動きの拘束を受けると、鉄心には面外曲げ振動が現れ、一般にこの振動がトランス騒音の主要因となる。
この面外曲げ鉄心振動を抑制することが、低騒音化につながるので、鉄心振動を最小化する層間摩擦力を求めることが重要になる。
先に述べたとおり、層間滑りがある状態では、層間摩擦力が大きい方が振動を抑制する減衰力が大きいので、鉄心振動は小さくなるが、層間摩擦力が大きすぎると、層間滑りが生じず、積層板は一体となって振動することになるので、層間摩擦による減衰力は働かなくなってしまう。つまり、層間摩擦力は大きすぎても小さすぎても不適切で、最適値が存在するのである。
As shown in FIG. 3, in-plane magnetostriction is dominated by in-plane expansion / contraction, but when it is laminated and subjected to movement restraint by tightening with bolts, etc., out-of-plane bending vibration appears in the iron core, and this vibration generally Is the main factor of transformer noise.
Since suppressing the out-of-plane bending iron core vibration leads to a reduction in noise, it is important to obtain an interlayer friction force that minimizes the iron core vibration.
As mentioned above, in the state where there is interlayer slip, the damping force that suppresses vibration is greater when the interlayer friction force is larger, so the iron core vibration is smaller, but if the interlayer friction force is too large, interlayer slip does not occur. Since the laminated plate vibrates as a unit, the damping force due to interlayer friction does not work. That is, the interlaminar frictional force is inappropriate whether it is too large or too small, and there is an optimum value.
この最適値は磁歪による起振力の大きさだけでなく、磁歪の周波数や鉄心の構造にも依存するので、単純に求められるものではないが、概ね磁歪による起振力の５０〜８０％程度にすると良い。この程度の層間摩擦力だと、図４(b)に示す状態、すなわち表1にbとして示すように、層間滑りがあり、かつ振動を抑制する大きな減衰力が作用している状態になるからである。
なお、図４(a)は、層間摩擦力が小さすぎる場合で、この場合は、表１にａで示すように、あまり大きな減衰効果は期待できない。また、図４(c)は、層間摩擦力が大きすぎる場合で、この場合も、表１にｃで示すように、やはり大きな減衰効果は期待できない。
This optimum value depends not only on the magnitude of the magnetomotive force but also on the magnetostriction frequency and the structure of the iron core, so it is not simply required, but is approximately 50 to 80% of the magnetomotive force. It is good to make it. With this level of inter-layer frictional force, the state shown in FIG. 4B, that is, as indicated by b in Table 1, there is inter-layer slipping and a state in which a large damping force that suppresses vibrations is acting. It is.
FIG. 4A shows the case where the interlayer friction force is too small. In this case, as shown by a in Table 1, a very large damping effect cannot be expected. FIG. 4 (c) shows a case where the interlayer friction force is too large. In this case, too, as shown by c in Table 1, a large damping effect cannot be expected.
ついで、上記のようにして求めた層間摩擦力と一般的に用いられる鉄心締付力とから、層間摩擦係数の目標値を定め、その値になるような被膜を選択または鋼板表面に形成する。摩擦係数は被膜の種類と表面粗さ等によって調整する。
ついで、実際に形成した被膜の摩擦係数に基づき、低騒音化に最適となる、振動特性を加味した鉄心締付力を求める。
Next, a target value of the inter-layer friction coefficient is determined from the inter-layer friction force determined as described above and a generally used iron core fastening force, and a coating film is selected or formed on the surface of the steel sheet so as to be the value. The coefficient of friction is adjusted according to the type of coating and surface roughness.
Next, based on the friction coefficient of the actually formed film, the iron core tightening force that considers vibration characteristics and is optimal for noise reduction is obtained.
そして、発注者の電磁鋼板仕様を満足する電磁鋼板の表面に、適正な表面粗さの被膜をそなえる製品を、上記のようにして求めた最適な鉄心締付力、あるいは鉄心締付力の適正範囲を添付して、発注者に出荷するのである。 The product with an appropriate surface roughness coating on the surface of the electrical steel sheet that satisfies the orderer's electrical steel sheet specifications is the optimum core tightening force obtained as described above, or the appropriate iron core tightening force. The range is attached and shipped to the orderer.
以上、容量や積層数等のトランス仕様のみが提供された場合について説明したが、かかるトランス仕様と共に使用する励磁周波数や磁束密度が併せて提供された場合には、上記(1)の工程は省略することができ、また上記(2)の工程に代えて、次の(2)′の工程を採用すれば良い。
(2)′上記の励磁周波数と磁束密度に基づいて単板としての磁歪特性を求め、その要件を満足する電磁鋼板を選択または製造する工程。
なお、(3)工程以降は、前述したところと同様にすれば良い。
The case where only the transformer specifications such as the capacity and the number of layers are provided has been described above. However, when the excitation frequency and the magnetic flux density used together with the transformer specifications are provided together, the above step (1) is omitted. The following step (2) ′ may be adopted instead of the step (2).
(2) ′ A step of obtaining magnetostriction characteristics as a single plate based on the above excitation frequency and magnetic flux density, and selecting or manufacturing an electromagnetic steel sheet satisfying the requirements.
In addition, what is necessary is just to carry out similarly to the place mentioned above after (3) processes.
本発明によれば、発注されたトランス仕様に応じて、単板として適正な磁歪特性を有するだけでなく、実際にトランスに組み立てた時の振動特性が最適になるような電磁鋼板を提供することができるので、トランスの一層の低騒音化が達成でき、従って発注者側は、トランスの製造に際し最大の利益を享受することができる。 According to the present invention, there is provided an electrical steel sheet that not only has an appropriate magnetostrictive characteristic as a single plate according to the ordered transformer specifications, but also has an optimal vibration characteristic when actually assembled to a transformer. Therefore, further noise reduction of the transformer can be achieved, so that the orderer can enjoy the maximum benefit in manufacturing the transformer.
Claims (3)
上記トランス仕様に基づいて求めた、鉄心として積層した際の磁歪振動を最小化する最適鉄心締付力、あるいは鉄心締付力の適正範囲を添付して電磁鋼板を出荷することを特徴とするトランス用方向性電磁鋼板の受注・出荷方法。 An order receiving system for grain-oriented electrical steel sheets having an order receiving device for receiving orders for grain-oriented electrical steel sheets for transformers and an information database connected to the order receiving device and storing information on various grades of grain-oriented electrical steel sheets It is a method of receiving an order for a grain-oriented electrical steel sheet for transformer together with a transformer specification, and shipping it.
A transformer characterized by shipping an electromagnetic steel sheet with an optimum core tightening force or an appropriate range of iron core tightening force that minimizes magnetostriction vibration when laminated as an iron core, obtained based on the above transformer specifications. Ordering / shipping methods for directional electrical steel sheets.
(1) 上記トランス仕様に基づいて、励磁周波数と磁束密度を推定し、
(2) 上記の推定した励磁周波数と磁束密度に基づいて単板としての磁歪特性を求め、その要件を満足する電磁鋼板を選択または製造し、
(3) 上記の磁歪特性に基づき、鉄心として積層した際の磁歪振動を推定し、
(4) 上記の推定した磁歪振動を最小化する摩擦力（＝層間摩擦係数×鉄心締付力）を求め、
(5) 上記した層間摩擦係数の目標値を定め、その値になるような被膜を選択または鋼板の表面に形成し、
(6) 上記被膜の実際の摩擦係数に基づき最適鉄心締付力を求め、
上記(2)，(5)で選択または製造した適正被膜をそなえる電磁鋼板を、上記(6)で求めた最適鉄心締付力、あるいは鉄心締付力の適正範囲を添付して出荷することを特徴とするトランス用方向性電磁鋼板の受注・出荷方法。 An order receiving device for receiving an order for a grain-oriented electrical steel sheet for transformers, and an information database connected to the order receiving device and storing information on various grades of grain-oriented electrical steel sheets including surface roughness information of the coating Using the ordering system for grain-oriented electrical steel sheets, ordering and shipping transformer-oriented grain-oriented electrical steel sheets together with transformer specifications,
(1) Estimate excitation frequency and magnetic flux density based on the above transformer specifications,
(2) Obtain magnetostriction characteristics as a single plate based on the estimated excitation frequency and magnetic flux density, and select or manufacture an electromagnetic steel sheet that satisfies the requirements,
(3) Based on the above magnetostriction characteristics, estimate the magnetostrictive vibration when laminated as an iron core,
(4) Find the frictional force that minimizes the estimated magnetostrictive vibration (= interlayer friction coefficient × iron core clamping force)
(5) Determine the target value of the above-mentioned interlaminar friction coefficient, select a film to be that value or form it on the surface of the steel sheet,
(6) Obtain the optimum core tightening force based on the actual friction coefficient of the coating,
The electrical steel sheet with the appropriate coating selected or manufactured in (2) and (5) above should be shipped with the optimum core tightening force obtained in (6) above or the appropriate range of core tightening force. An ordering and shipping method for directional electrical steel sheets for transformers.
上記トランス仕様が、使用する励磁周波数と磁束密度を含む場合に、
(2)′上記の励磁周波数と磁束密度に基づいて単板としての磁歪特性を求め、その要件を満足する電磁鋼板を選択または製造し、
(3) 上記の磁歪特性に基づき、鉄心として積層した際の磁歪振動を推定し、
(4) 上記の推定した磁歪振動を最小化する摩擦力（＝層間摩擦係数×鉄心締付力）を求め、
(5) 上記した層間摩擦係数の目標値を定め、その値になるような被膜を選択または鋼板の表面に形成し、
(6) 上記被膜の実際の摩擦係数に基づき最適鉄心締付力を求め、
上記(2)′，(5)で選択または製造した適正被膜をそなえる電磁鋼板を、上記(6)で求めた最適鉄心締付力、あるいは鉄心締付力の適正範囲を添付して出荷することを特徴とするトランス用方向性電磁鋼板の受注・出荷方法。 An order receiving device for receiving an order for a grain-oriented electrical steel sheet for transformers, and an information database connected to the order receiving device and storing information on various grades of grain-oriented electrical steel sheets including surface roughness information of the coating Using the ordering system for grain-oriented electrical steel sheets, ordering and shipping transformer-oriented grain-oriented electrical steel sheets together with transformer specifications,
When the above transformer specifications include the excitation frequency and magnetic flux density to be used,
(2) ′ Obtain magnetostrictive characteristics as a single plate based on the above excitation frequency and magnetic flux density, and select or manufacture an electromagnetic steel sheet that satisfies the requirements,
(3) Based on the above magnetostriction characteristics, estimate the magnetostrictive vibration when laminated as an iron core,
(4) Find the frictional force that minimizes the estimated magnetostrictive vibration (= interlayer friction coefficient × iron core clamping force)
(5) Determine the target value of the above-mentioned interlaminar friction coefficient, select a film to be that value or form it on the surface of the steel sheet,
(6) Obtain the optimum core tightening force based on the actual friction coefficient of the coating,
Ship the magnetic steel sheet with the appropriate coating selected or manufactured in (2) 'and (5) above with the optimum core tightening force obtained in (6) above or the appropriate range of core tightening force. Ordering and shipping method for grain-oriented electrical steel sheets for transformers.
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