JP3505047B2 - Steel wire for ACSR with low iron loss - Google Patents
Steel wire for ACSR with low iron lossInfo
- Publication number
- JP3505047B2 JP3505047B2 JP26448696A JP26448696A JP3505047B2 JP 3505047 B2 JP3505047 B2 JP 3505047B2 JP 26448696 A JP26448696 A JP 26448696A JP 26448696 A JP26448696 A JP 26448696A JP 3505047 B2 JP3505047 B2 JP 3505047B2
- Authority
- JP
- Japan
- Prior art keywords
- steel wire
- iron loss
- acsr
- low iron
- 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.)
- Expired - Fee Related
Links
Landscapes
- Heat Treatment Of Steel (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
- Coating With Molten Metal (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は送電線用ケーブルの
Ａｌ導線を補強するために使用される鋼撚線の素線（Ａ
ＣＳＲ（Aluminium Conductor Steel Reinforced）鋼
線）に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel stranded wire (A) used to reinforce an Al conductor wire of a cable for a transmission line.
The present invention relates to CSR (Aluminium Conductor Steel Reinforced) steel wire.
【０００２】[0002]
【従来の技術】ＡＣＳＲは米国ＡＬＣＯＡ社が考案し、
Ａｌの軽量により送電線として多く用いられている。し
かしＡｌは強度が低いため、補強用にＡＣＳＲの中心部
にＺｎやＡｌをメッキした鋼線と組み合わせて用いる。
通常、当該鋼線にはＪＩＳ ＳＷＲＨ６２〜７７Ａを素
線として用い、冷間伸線後の鋼線を３〜１９本に縒りあ
わせて用いる。このような心線は強度、伸び、捻回値、
巻き付き試験時の折損などに関する規定があるが、ＡＣ
ＳＲとして用いた場合の鉄損に関する規定は特に定めら
れていない。しかるに現実のＡＣＳＲ用鋼心線には、鋼
より線の周囲によりあわせた硬Ａｌ線に電流が流れるた
め、誘導電流による鉄損が生ずるという欠点があった。
この鉄損は大きな送電ロスの原因となるにもかかわら
ず、現状ではこの鉄損を防止する手段は何もとられてい
ない。2. Description of the Related Art ACSR, a US company, devised the ACSR.
Due to the light weight of Al, it is often used as a power transmission line. However, since Al has low strength, it is used in combination with a steel wire plated with Zn or Al at the center of the ACSR for reinforcement.
Usually, JIS SWRH62-77A is used for the said steel wire as an element wire, and the steel wire after cold drawing is twisted and used for 3-19 pieces. Such a core wire has strength, elongation, twist value,
Although there are regulations regarding breakage during wrapping tests, AC
There is no specific regulation on iron loss when used as SR. However, in the actual steel core wire for ACSR, there is a drawback that iron loss occurs due to an induced current because a current flows through a hard Al wire that is matched with the circumference of the steel stranded wire.
Although this iron loss causes a large transmission loss, at present, no measures are taken to prevent this iron loss.
【０００３】一般にトランスやモーターの鉄損を低減さ
せるために電磁鋼板が使用されており、圧延方向に対し
て結晶方位をそろえた方向性電磁鋼板、結晶方位をラン
ダムに配列した無方向性電磁鋼板が知られている。これ
らの電磁鋼板では結晶方位を制御するために製造工程で
はＣを含む鋼を用い、最終製品では脱炭焼鈍等によりＣ
を３０ppm 以下に抑える。この方法は多大な製造コスト
を要する。またこれらはいずれも薄板に関するものであ
り、より線を周囲の硬Ａｌ線とより合わせた場合に鉄損
を低減させる方法については報告はない。Generally, electromagnetic steel sheets are used to reduce iron loss of transformers and motors. Grain-oriented electrical steel sheets in which crystal orientations are aligned with the rolling direction, non-oriented electrical steel sheets in which crystal orientations are randomly arranged. It has been known. In these electromagnetic steel sheets, steel containing C is used in the manufacturing process in order to control the crystal orientation, and in the final product, C is obtained by decarburization annealing or the like.
To 30ppm or less. This method requires a large manufacturing cost. Further, these are all related to thin plates, and there is no report on a method of reducing iron loss when a stranded wire is twisted with a surrounding hard Al wire.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、鋼素線の成
分系と製造条件を特定することにより、送電時の鉄損を
低減しうるＡＣＳＲ用鋼心線とその製造法に関するもの
である。DISCLOSURE OF THE INVENTION The present invention relates to a steel core wire for ACSR capable of reducing iron loss during power transmission by specifying the component system of steel wire and manufacturing conditions, and a manufacturing method thereof. .
【０００５】[0005]
【課題を解決するための手段】かかる課題を解決するた
めに、本発明は鋼材の成分を限定し、さらに鋼材の製造
条件を選定することにより送電時の電力ロスを低減する
ことを可能とするＡＣＳＲ用鋼心線とその製造法を提供
するものである。即ち要旨とするところは以下のとおり
である。
（１）重量％で、Ｃ ：０．０１％以下、Ｓｉ：０．６
％〜６．５％、Ｍｎ：０．１０％〜１．５％、残部がＦ
ｅおよび不可避的不純物からなることを特徴とする鉄損
の低いＡＣＳＲ用鋼線。
（２）重量％で、Ａｌ：０．００２％〜０．０５０％を
含有することを特徴とする（１）に記載の鉄損の低いＡ
ＣＳＲ用鋼線。
（３）重量％で、Ｎｂ：０．００２％〜０．１０％、Ｔ
ｉ：０．００２％〜０．１０％の１種または２種以上を
含有することを特徴とする（１）乃至（２）のいずれか
１つに記載の鉄損の低いＡＣＳＲ用鋼線。
（４）重量％で、Ｃｕ：０．０２％〜０．５％、 Ｎ
ｉ：０．０２％〜０．５％、Ｃｒ：０．０２％〜０．５
％、 Ｍｏ：０．０２％〜０．５％、Ｃｏ：０．０２％
〜０．５％、 Ｗ ：０．０２％〜０．５％の１種また
は２種以上を含有することを特徴とする（１）乃至
（３）のいずれか１つに記載の鉄損の低いＡＣＳＲ用鋼
線。
（５）重量％で、Ｖ：０．００２％〜０．１０％を含有
することを特徴とする（１）乃至（４）のいずれか１つ
に記載の鉄損の低いＡＣＳＲ用鋼線。
（６）重量％で、Ｂ：０．０００２％〜０．００２５％
を含有することを特徴とする（１）乃至（５）のいずれ
か１つに記載の鉄損の低いＡＣＳＲ用鋼線。
（７）重量％で、Ｒｅｍ：０．００２％〜０．１０％、
Ｃａ：０．０００３％〜０．００３０％、Ｍｇ：０．０
００３〜０．０１％の１種または２種以上を含有するこ
とを特徴とする（１）乃至（６）のいずれか１つに記載
の鉄損の低いＡＣＳＲ用鋼線。
（８）鋼線をＺｎメッキ、または重量比で、Ａｌ：２〜
１２％、Ｓｉ：０．０１〜０．１２％、残余をＺｎおよ
び不可避的不純物からなる合金浴を用いて溶融メッキす
ることを特徴とする（１）乃至（７）のいずれか１つに
記載の鉄損の低いＡＣＳＲ用メッキ鋼線。
（９）メッキ後の鋼線を総減面率２０〜８０％で伸線す
ることを特徴とする（８）に記載の鉄損の低いＡＣＳＲ
用メッキ鋼線。
（１０）伸線後の鋼線を３００度以上３７０度以下の温
度でブルーイング処理を施すことを特徴とする（９）に
記載の鉄損の低いＡＣＳＲ用鋼線。
（１１）伸線後の鋼線を３００度以上３７０度以下の温
度で加熱し且つ加熱中に鋼線の引張強度の２０％〜５０
％の範囲の応力を加えることを特徴とする（９）に記載
の鉄損の低いＡＣＳＲ用メッキ鋼線。In order to solve such a problem, the present invention makes it possible to reduce the power loss during power transmission by limiting the composition of the steel material and selecting the manufacturing conditions of the steel material. The present invention provides a steel core wire for ACSR and a manufacturing method thereof. That is, the main points are as follows. (1) Weight%, C: 0.01% or less, Si: 0.6
% -6.5%, Mn: 0.10% -1.5%, balance F
A steel wire for ACSR having low iron loss, which is characterized by comprising e and unavoidable impurities. (2) A having a low iron loss as described in (1), characterized by containing Al: 0.002% to 0.050% by weight.
Steel wire for CSR. (3) wt%, Nb: 0.002% to 0.10%, T
i: 0.002% to 0.10% of 1 type or 2 types or more, The steel wire for ACSR with low iron loss as described in any one of (1) to (2) characterized by the above-mentioned. (4) By weight%, Cu: 0.02% to 0.5%, N
i: 0.02% to 0.5%, Cr: 0.02% to 0.5
%, Mo: 0.02% to 0.5%, Co: 0.02%
~ 0.5%, W: 0.02% to 0.5% of one or more kinds of the iron loss according to any one of (1) to (3). Low steel wire for ACSR. (5) The steel wire for ACSR having low iron loss according to any one of (1) to (4), characterized in that it contains V: 0.002% to 0.10% by weight. (6) B: 0.0002% to 0.0025% by weight
A steel wire for ACSR having low iron loss according to any one of (1) to (5), characterized in that (7)% by weight, Rem: 0.002% to 0.10%,
Ca: 0.0003% to 0.0030%, Mg: 0.0
003-0.01% of 1 type (s) or 2 or more types, The iron wire with low iron loss as described in any one of (1) thru | or (6) characterized by the above-mentioned. (8) Steel wire is plated with Zn, or in a weight ratio, Al: 2 to
12%, Si: 0.01 to 0.12%, the balance is hot dip plated using an alloy bath consisting of Zn and unavoidable impurities. (1) to (7) ASR coated steel wire with low iron loss. (9) The ACSR with low iron loss according to (8), characterized in that the steel wire after plating is drawn at a total area reduction rate of 20 to 80%.
For plated steel wire. (10) The steel wire for ACSR having a low iron loss according to (9), wherein the steel wire after drawing is subjected to bluing treatment at a temperature of 300 to 370 degrees. (11) The steel wire after drawing is heated at a temperature of 300 to 370 degrees and 20% to 50% of the tensile strength of the steel wire during heating.
% Of stress is applied to the plated steel wire for ACSR having low iron loss according to (9).
【０００６】[0006]
【発明の実施の形態】以下本発明について詳細に説明す
る。本発明の根幹をなす技術思想は以下のとおりであ
る。一般に、鉄損はヒステリシス損と渦電流損に分離す
ることができる。前者は結晶方位と鋼の純度の影響を受
けることが知られている。板の場合は圧延面に（１１
０）〔００１〕方位（いわゆるＧｏｓｓ方位）が集積す
ることが望ましく、また純度が高いほど良い。しかるに
高強度の鋼線は多量のＣを含むことにより高強度化して
いるため、Ｃを低減する場合はそれに代替する高強度化
の手段をとる必要がある。さらに伸線加工は強烈な繊維
状集合組織を発達させるため、伸線材特有の集合組織以
外の結晶方位を得ることは不可能に近い。一方、後者の
渦電流損は固有抵抗が大きいほど小さくなるため、Ｓｉ
添加が有効であることが知られている。しかるに高Ｓｉ
鋼は延性が低く、実際に伸線加工する場合に容易に破断
する。このような問題点を総合的に解決するために本発
明者らは種々検討を加え下記の解決策を見出だした。BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below. The technical idea that forms the basis of the present invention is as follows. Generally, iron loss can be separated into hysteresis loss and eddy current loss. The former is known to be affected by crystal orientation and steel purity. In the case of a plate, (11
0) It is desirable that [001] orientation (so-called Goss orientation) is integrated, and the higher the purity, the better. However, since the high-strength steel wire has a high strength by containing a large amount of C, in the case of reducing C, it is necessary to take a strengthening means to replace it. Furthermore, since wire drawing develops a strong fibrous texture, it is almost impossible to obtain a crystal orientation other than the texture unique to the wire drawing material. On the other hand, the latter eddy current loss decreases as the specific resistance increases, so Si
It is known that the addition is effective. High Si
Steel has low ductility and easily breaks when actually drawn. In order to comprehensively solve such problems, the present inventors have made various studies and found the following solutions.
【０００７】ヒステリシス損を低減するためにはＣ含有
量の低減が必須である。そのためＣの低減に伴う強度の
低下を別の手法で補う必要がある。一般にＣ含有量が大
きいほど伸線加工による強度上昇は大きくなるため、Ｃ
量を低減すると伸線加工による高強度化もあまり期待で
きない。しかるに、Ｃの代わりにＳｉを高めることによ
り伸線加工による強度上昇量を大きくとることが可能で
ある。単にＳｉを高めると伸線加工性を阻害して伸線中
に容易に破断してしまうが、Ｃ量を低くすることにより
伸線加工性を阻害せずに強度を高めることができ且つヒ
ステリシス損も低減することが可能となる。良好な伸線
加工性を保つためにはＣとＳｉの含有量を所定の範囲に
おさめる必要がある。In order to reduce the hysteresis loss, it is essential to reduce the C content. Therefore, it is necessary to compensate the decrease in strength due to the decrease in C by another method. In general, the higher the C content, the greater the increase in strength due to wire drawing.
If the amount is reduced, higher strength due to wire drawing cannot be expected so much. However, by increasing Si instead of C, it is possible to increase the amount of strength increase due to wire drawing. If Si is simply increased, wire drawing workability is hindered and the wire is easily broken during wire drawing. However, by lowering the amount of C, strength can be increased without hindering wire drawing workability, and hysteresis loss can be reduced. Can also be reduced. In order to maintain good wire drawing workability, it is necessary to keep the contents of C and Si within a predetermined range.
【０００８】以下に化学成分および金属組織の限定理由
を詳細に説明する。まず本発明の成分の限定理由につい
て述べる。Ｃは、線材を強化するのに有効な元素である
が、鉄損を著しく増大させるためにその含有量を厳しく
制限する必要がある。０．０１％を超えると鉄損の劣化
が顕著であるため含有量を０．０１％以下とする。一
方、Ｃの下限は特に規制するものでなく少なければ少な
い程良い。The reasons for limiting the chemical composition and the metal structure will be described in detail below. First, the reasons for limiting the components of the present invention will be described. C is an element effective for strengthening the wire rod, but its content must be strictly limited in order to significantly increase iron loss. If it exceeds 0.01%, the iron loss is significantly deteriorated, so the content is made 0.01% or less. On the other hand, the lower limit of C is not particularly limited, and the smaller the better, the better.
【０００９】Ｓｉは脱酸元素として有効であるとともに
固有抵抗を増して渦電流損を低減させる。０．６％未満
の含有量ではその効果が小さい。一方、６．５％を越え
ると伸線性が劣化するために含有量の範囲を０．６％以
上６．５％以下とする。Ｍｎは金属の強靱化に有効な元
素であり、０．１０％未満の添加では十分な効果が得ら
れない。一方、その含有量が１．５％を越えると溶着金
属の靱性が劣化する。Si is effective as a deoxidizing element and increases the specific resistance to reduce the eddy current loss. If the content is less than 0.6%, the effect is small. On the other hand, if it exceeds 6.5%, the wire drawability deteriorates, so the content range is made 0.6% or more and 6.5% or less. Mn is an element effective in toughening a metal, and if it is added in an amount of less than 0.10%, a sufficient effect cannot be obtained. On the other hand, if the content exceeds 1.5%, the toughness of the deposited metal deteriorates.
【００１０】ＴｉおよびＮｂはいずれも微量の添加で結
晶粒の微細化と析出硬化の面で有効に機能するが、添加
量が少ないとその効果が得られず、また過度の量の添加
は鉄損の増加をもたらすため、Ｎｂ，Ｔｉともその添加
量をＴｉ：０．００２％〜０．１０％、Ｎｂ：０．００
２％〜０．１０％の範囲に限定する。Ｃｕ，Ｎｉ，Ｃ
ｒ，Ｍｏ，Ｗはいずれも鋼の強度を高めることができる
が、添加量が少ないと固溶強化による強度上昇の効果が
得られず、また過度の量の添加は延性を劣化させるた
め、添加量をＣｕ：０．０２％〜０．５％、Ｎｉ：０．
０２％〜０．５％、Ｃｒ：０．０２％〜０．５％、Ｍ
ｏ：０．０２％〜０．５％、Ｗ：０．０２％〜０．５％
の範囲に限定する。Both Ti and Nb function effectively in terms of grain refinement and precipitation hardening when added in a small amount, but if the added amount is too small, the effect cannot be obtained. In order to increase the loss, the addition amount of both Nb and Ti is Ti: 0.002% to 0.10%, Nb: 0.00
It is limited to the range of 2% to 0.10%. Cu, Ni, C
Each of r, Mo, and W can increase the strength of steel, but if the addition amount is small, the effect of increasing strength due to solid solution strengthening cannot be obtained, and addition of an excessive amount deteriorates ductility. The amount of Cu: 0.02% to 0.5%, Ni: 0.
02% to 0.5%, Cr: 0.02% to 0.5%, M
o: 0.02% to 0.5%, W: 0.02% to 0.5%
It is limited to the range of.
【００１１】Ｖは、鋼の強度を高めるのに有効である
が、添加量が少ないとその効果が得られず、また過度の
量の添加は鉄損の増加をもたらすため、その添加量を
０．００２％〜０．１０％の範囲に限定する。Ｂは鋼の
焼入れ性を向上させる元素である。本発明における場
合、その添加により鋼の強度を高めることができるが、
添加量が少ないと焼き入れ性が向上せず、また過度の添
加はＢの析出物を増加させて延性を損なうためその含有
量を０．０００２％〜０．００２５％の範囲とする。V is effective in increasing the strength of the steel, but if the addition amount is small, the effect cannot be obtained, and if the addition amount is excessive, the iron loss increases, so the addition amount is 0. It is limited to the range of 0.002% to 0.10%. B is an element that improves the hardenability of steel. In the case of the present invention, the addition thereof can increase the strength of steel,
If the amount of addition is small, the hardenability does not improve, and excessive addition increases the precipitates of B and impairs ductility, so the content is made 0.0002% to 0.0025%.
【００１２】Ｒｅｍ，ＣａおよびＭｇはＳまたは酸素と
結び付いて金属組織を微細化するのに有効である。少量
の添加ではＳがそのまま残り、また過度の添加は鉄損の
増加をもたらすため、Ｒｅｍ：０．００２％〜０．１０
％、Ｃａ：０．０００３％〜０．００３０％、Ｍｇ：
０．０００３％〜０．０１％の範囲で添加する。Ａｌは
脱酸元素として有効である。０．００２％未満の含有量
ではその効果がなく、０．０５％を越えると表面疵がで
やすくなるため、その含有量を０．００２％〜０．０５
０％の範囲とする。[0012] Rem, Ca and Mg are effective in combining with S or oxygen to refine the metal structure. If a small amount is added, S remains as it is, and excessive addition causes an increase in iron loss. Therefore, Rem: 0.002% to 0.10
%, Ca: 0.0003% to 0.0030%, Mg:
It is added in the range of 0.0003% to 0.01%. Al is effective as a deoxidizing element. If the content is less than 0.002%, there is no effect, and if it exceeds 0.05%, surface defects are likely to occur, so the content is 0.002% to 0.05%.
The range is 0%.
【００１３】次に本発明における製造条件の限定条件に
ついて述べる。本発明の鋼線はその製造工程をとくに定
める必要はない。すなわち、通常の製鋼工程で精錬およ
び鋳造された鋼塊または鋳片を出発点として必要に応じ
て分塊圧延を施し、通常の線材圧延工程で鋼線としたも
のを対象としている。各工程での操業条件は多岐にわた
るがそのいずれを用いても有効である。Next, the limiting conditions of the manufacturing conditions in the present invention will be described. The steel wire of the present invention does not need to have a particular manufacturing process. That is, the steel ingot or slab smelted and cast in the normal steelmaking process is used as a starting point to perform slab rolling as required, and a steel wire is produced in the normal wire rod rolling process. There are various operating conditions in each process, but any of them is effective.
【００１４】通常ＡＣＳＲに用いられる鋼線は耐食性を
付与するためにＺｎメッキまたはＡｌ−Ｚｎ等の合金メ
ッキを施す必要がある。通常のＺｎメッキでも耐食性は
向上するが、Ａｌを添加するとより良好な耐食性を示す
ため、使用環境の過酷度合に応じてＡｌ量を選択すれば
良い。ただし、Ａｌ量が２％未満では耐食性の向上効果
は不十分であり、１２％を越えると融点上昇によりメッ
キ温度が高くなるため鋼線強度の低下をもたらす。よっ
てメッキ浴中のＡｌの量は、重量％で２％以上１２％以
下に限定する。一方、メッキ浴中にＳｉを添加する理由
はメッキ槽などの鋼製の設備・機器からＦｅが溶け出る
のを抑制し、メッキ浴中のドロスの発生を抑えることに
ある。Ｓｉ添加量が０．０１％未満ではドロスが発生
し、０．１２％を越えるとＳｉがメッキ浴中に溶解しな
いため、その添加量を０．０１％以上０．１２％未満に
限定する。Generally, the steel wire used for ACSR needs to be plated with Zn or an alloy such as Al-Zn in order to impart corrosion resistance. Corrosion resistance is improved even with normal Zn plating, but better corrosion resistance is exhibited when Al is added, so the Al amount may be selected according to the severity of the operating environment. However, if the amount of Al is less than 2%, the effect of improving corrosion resistance is insufficient, and if it exceeds 12%, the melting point rises and the plating temperature increases, leading to a decrease in the strength of the steel wire. Therefore, the amount of Al in the plating bath is limited to 2% or more and 12% or less by weight. On the other hand, the reason for adding Si to the plating bath is to prevent Fe from leaching out from steel facilities and equipment such as a plating bath and to suppress the generation of dross in the plating bath. When the amount of Si added is less than 0.01%, dross occurs, and when it exceeds 0.12%, Si is not dissolved in the plating bath. Therefore, the amount added is limited to 0.01% or more and less than 0.12%.
【００１５】通常メッキ工程を経ることにより強度が低
下するため、メッキ後伸線加工（アフタードロー）を施
し強度を補償する。その際の総減面率が２０％未満では
強度が十分に回復せず、８０％を越えると延性が著しく
劣化するので、総減面率の範囲を２０％以上８０％未満
に限定する。このような伸線加工をすると製品としての
伸びが劣化するため、再度加熱して伸びを確保する必要
がある。その際の加熱温度が３００℃未満では伸びが十
分に回復せず、３７０℃を越えるとメッキ層が軟化して
しまうため、加熱温度の範囲を３００℃以上３７０℃未
満に限定する。さらにメッキにより低下した強度を高め
るには、加熱中に応力を負荷することが有効である。そ
の際の負荷応力が鋼線の常温での引張り強度の２０％未
満では強度上昇が不十分であり、５０％を越えると局部
的に塑性変形が生じて延性を劣化させるため、負荷応力
の範囲を鋼線の常温での引張り強度の２０％以上５０％
以下に限定する。Since the strength generally decreases after the plating process, a wire drawing process (after draw) is performed after plating to compensate the strength. At that time, if the total area reduction rate is less than 20%, the strength is not sufficiently recovered, and if it exceeds 80%, the ductility is remarkably deteriorated. Therefore, the range of the total area reduction rate is limited to 20% or more and less than 80%. Since elongation as a product deteriorates when such wire drawing is performed, it is necessary to heat again to secure the elongation. If the heating temperature at that time is less than 300 ° C., the elongation is not sufficiently recovered, and if it exceeds 370 ° C., the plating layer is softened. Therefore, the heating temperature range is limited to 300 ° C. or more and less than 370 ° C. Further, in order to increase the strength lowered by plating, it is effective to apply stress during heating. If the load stress at that time is less than 20% of the tensile strength of the steel wire at room temperature, the strength increase is insufficient, and if it exceeds 50%, plastic deformation occurs locally and ductility deteriorates. 20% to 50% of the tensile strength of steel wire at room temperature
Limited to:
【００１６】[0016]
【実施例】次に本発明を実施例にもとづいて詳細に説明
する。まず表１に示す成分の鋼線を通常の転炉法による
精錬（一部真空溶解）、連続鋳造（一部鋼塊法＋分塊圧
延）、線材圧延（熱間圧延）により製造した。さらに冷
間伸線により所定の直径まで引いて強度を調整した。冷
間伸線後、一部のものについては表２に示す条件でメッ
キ、アフタードロー、ブルーイング、温間ストレッチン
グの各処理を施した。これらの鋼線の機械的性質および
耐食性倍率を表２に合わせて示す。ここで耐食性倍率は
下記の式で計算した。EXAMPLES Next, the present invention will be described in detail based on examples. First, the steel wires having the components shown in Table 1 were manufactured by refining (partially vacuum melting) by a normal converter method, continuous casting (partial steel ingot method + slabbing), and wire rod rolling (hot rolling). Furthermore, the strength was adjusted by drawing to a predetermined diameter by cold drawing. After cold drawing, some of the products were subjected to plating, afterdrawing, bluing, and warm stretching under the conditions shown in Table 2. The mechanical properties and corrosion resistance magnification of these steel wires are also shown in Table 2. Here, the corrosion resistance magnification was calculated by the following formula.
【００１７】[0017]
【数１】 [Equation 1]
【００１８】[0018]
【表１】 [Table 1]
【００１９】[0019]
【表２】 [Table 2]
【００２０】これらの鋼線を直径２７０mmのリング状に
約６巻し、さらにその周囲に１次側で７００巻、２次側
で２０巻の銅線を巻いて鉄損の測定に供した。鉄損の測
定のためには交流での磁束密度と磁界強さの関係を測定
した。周波数は５０Hzとした。磁界強さ（Ｈｍ）は１０
００〜４０００（Ａ／ｍ）の範囲で、また磁束密度（Ｂ
ｍ）は０．２〜１．５（Ｔ）の範囲で変化させて鉄損を
測定した。鉄損の測定結果を表３に示す。Each of these steel wires was wound in a ring shape with a diameter of 270 mm about 6 times, and further 700 wires were wound around the primary side and 20 wires were wound around the secondary side, and the iron loss was measured. For the measurement of iron loss, the relationship between magnetic flux density and magnetic field strength under alternating current was measured. The frequency was 50 Hz. Magnetic field strength (Hm) is 10
In the range of 00 to 4000 (A / m), the magnetic flux density (B
m) was changed in the range of 0.2 to 1.5 (T) to measure the iron loss. Table 3 shows the measurement results of iron loss.
【００２１】[0021]
【表３】 [Table 3]
【００２２】表２に示したように、本発明の鋼は極低Ｃ
鋼ではあるものの１０００MPa を越える引張強度を有し
ている。さらに伸びも比較的良好でＡＣＳＲとしての仕
様に十分耐えるものである。メッキをほどこすことによ
り、耐食性が確保できるが、特にＺｎ−Ａｌメッキを施
した場合の耐食性倍率が大きく、効果が顕著であること
がわかる。As shown in Table 2, the steel of the present invention has an extremely low C
Although it is steel, it has a tensile strength of over 1000 MPa. Furthermore, it has a relatively good elongation and can withstand the specifications of ACSR. It can be seen that the corrosion resistance can be ensured by applying the plating, but particularly when the Zn—Al plating is applied, the corrosion resistance ratio is large and the effect is remarkable.
【００２３】また、表３に示したように、本発明の鋼は
極めて鉄損が低い。特に鉄損はＣ量が低くＳｉ量が高い
ほど低くなる傾向が見られるが、本発明鋼のいずれの鉄
損も、現状使用されている０．８２％Ｃ鋼に比較して半
減していることがわかる。Further, as shown in Table 3, the steel of the present invention has extremely low iron loss. In particular, the iron loss tends to be lower as the C content is lower and the Si content is higher, but any iron loss of the steels of the present invention is halved compared to the 0.82% C steel currently used. I understand.
【００２４】[0024]
【発明の効果】このように本発明は強度、伸び、耐食性
に優れさらに従来鋼よりはるかに鉄損も低い。このこと
はＡＣＳＲの心線として用いた場合に電力ロスの大幅な
低減を可能とし省エネルギーに多大な効果をもたらすも
のである。INDUSTRIAL APPLICABILITY As described above, the present invention is excellent in strength, elongation, corrosion resistance, and far lower in iron loss than conventional steels. This makes it possible to significantly reduce power loss when used as the core wire of ACSR, and bring about a great effect on energy saving.
フロントページの続き (72)発明者 大羽 浩 千葉県君津市君津１番地 新日本製鐵株 式会社 君津製鐵所内 (72)発明者 薮本 政男 千葉県富津市新富20−１ 新日本製鐵株 式会社 技術開発本部内 (58)調査した分野(Int.Cl.7，ＤＢ名) C22C 38/00 - 38/60 Front page continuation (72) Inventor Hiroshi Oba 1 Kimitsu, Kimitsu-shi, Chiba Nippon Steel Co., Ltd. Kimitsu Works Ltd. (72) Inventor Masao Yabumoto 20-1 Shintomi, Futtsu-shi, Chiba Nippon Steel Co., Ltd. ceremony Corporate Technology Development Division (58) Fields surveyed (Int.Cl. 7 , DB name) C22C 38/00-38/60
Claims (11)
する鉄損の低いＡＣＳＲ用鋼線。1. By weight%, C: 0.01% or less, Si: 0.6% to 6.5%, Mn: 0.10% to 1.5%, and the balance being Fe and inevitable impurities. A steel wire for ACSR having a low iron loss.
５０％を含有することを特徴とする請求項１に記載の鉄
損の低いＡＣＳＲ用鋼線。2. Al: 0.002% to 0.0 by weight.
The steel wire for ACSR having a low iron loss according to claim 1, wherein the steel wire contains 50%.
０％、Ｔｉ：０．００２％〜０．１０％の１種または２
種以上を含有することを特徴とする請求項１乃至請求項
２のいずれか１つに記載の鉄損の低いＡＣＳＲ用鋼線。3. Nb: 0.002% to 0.1% by weight.
0%, Ti: 0.002% to 0.10%, one or two
The steel wire for ACSR having a low iron loss according to any one of claims 1 and 2, containing at least one kind.
０．５％、 Ｃｒ：０．０２％〜０．５％、 Ｍｏ：０．０２％〜
０．５％、 Ｃｏ：０．０２％〜０．５％、 Ｗ ：０．０２％〜
０．５％ の１種または２種以上を含有することを特徴とする請求
項１乃至請求項３のいずれか１つに記載の鉄損の低いＡ
ＣＳＲ用鋼線。4. By weight%, Cu: 0.02% to 0.5%, Ni: 0.02% to
0.5%, Cr: 0.02% to 0.5%, Mo: 0.02% to
0.5%, Co: 0.02% to 0.5%, W: 0.02% to
0.5% of 1 type (s) or 2 or more types is contained, A with low iron loss as described in any one of Claim 1 thru | or 3 characterized by the above-mentioned.
Steel wire for CSR.
％を含有することを特徴とする請求項１乃至請求項４の
いずれか１つに記載の鉄損の低いＡＣＳＲ用鋼線。5. V: 0.002% to 0.10.
%, The steel wire for ACSR having a low iron loss according to any one of claims 1 to 4.
０２５％を含有することを特徴とする請求項１乃至請求
項５のいずれか１つに記載の鉄損の低いＡＣＳＲ用鋼
線。6. B: 0.0002% to 0.0 by weight.
025% is contained, The steel wire for ACSR with low iron loss of any one of Claim 1 thru | or 5 characterized by the above-mentioned.
項１乃至請求項６のいずれか１つに記載の鉄損の低いＡ
ＣＳＲ用鋼線。7. In weight%, one or more of Rem: 0.002% to 0.10%, Ca: 0.0003% to 0.0030%, Mg: 0.0003 to 0.01%. A having a low iron loss according to any one of claims 1 to 6, characterized by containing A.
Steel wire for CSR.
て溶融メッキしたことを特徴とする請求項１乃至請求項
７のいずれか１つに記載の鉄損の低いＡＣＳＲ用メッキ
鋼線。8. A steel wire is Zn-plated, or in a weight ratio, Al: 2 to 12%, Si: 0.01 to 0.12%, and the rest is hot-dip plated using an alloy bath containing Zn and inevitable impurities. The plated steel wire for ACSR having a low iron loss according to any one of claims 1 to 7.
で伸線したことを特徴とする請求項８に記載の鉄損の低
いＡＣＳＲ用メッキ鋼線。9. A steel wire after plating has a total area reduction rate of 20 to 80%.
9. The plated steel wire for ACSR having a low iron loss according to claim 8, which is drawn.
以下の温度でブルーイング処理を施すことを特徴とする
請求項９に記載の鉄損の低いＡＣＳＲ用鋼線。10. The steel wire after drawing is 300 ° C. or higher and 370 ° C.
The steel wire for ACSR with low iron loss according to claim 9, which is subjected to bluing treatment at the following temperature.
以下の温度で加熱し且つ加熱中に鋼線の引張強度の２０
％〜５０％の範囲の応力を加えたことを特徴とする請求
項９に記載の鉄損の低いＡＣＳＲ用メッキ鋼線。11. A steel wire after drawing is 300 ° C. or higher and 370 ° C.
It is heated at the following temperature and the tensile strength of the steel wire during heating is 20
The plated steel wire for ACSR with low iron loss according to claim 9, wherein a stress in the range of 50% to 50% is applied.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26448696A JP3505047B2 (en) | 1996-10-04 | 1996-10-04 | Steel wire for ACSR with low iron loss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26448696A JP3505047B2 (en) | 1996-10-04 | 1996-10-04 | Steel wire for ACSR with low iron loss |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10110245A JPH10110245A (en) | 1998-04-28 |
| JP3505047B2 true JP3505047B2 (en) | 2004-03-08 |
Family
ID=17403915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26448696A Expired - Fee Related JP3505047B2 (en) | 1996-10-04 | 1996-10-04 | Steel wire for ACSR with low iron loss |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3505047B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3978301B2 (en) | 1999-09-30 | 2007-09-19 | 矢崎総業株式会社 | High strength lightweight conductor, stranded wire compression conductor |
| JP4613436B2 (en) * | 2001-04-02 | 2011-01-19 | Ｊｆｅスチール株式会社 | Non-oriented electrical steel sheet |
| CN104233055B (en) * | 2014-09-03 | 2016-06-01 | 湖州南浔闻天磁性材料有限公司 | The manufacture method of a kind of iron silicon materials and iron silica magnetic particle core |
| CN113077943A (en) * | 2021-04-19 | 2021-07-06 | 江苏南瑞银龙电缆有限公司 | Preparation method of low-strength extremely-poor steel-cored aluminum strand |
-
1996
- 1996-10-04 JP JP26448696A patent/JP3505047B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10110245A (en) | 1998-04-28 |
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