JPH0718101B2 - Steel cord and tire - Google Patents
Steel cord and tireInfo
- Publication number
- JPH0718101B2 JPH0718101B2 JP63207961A JP20796188A JPH0718101B2 JP H0718101 B2 JPH0718101 B2 JP H0718101B2 JP 63207961 A JP63207961 A JP 63207961A JP 20796188 A JP20796188 A JP 20796188A JP H0718101 B2 JPH0718101 B2 JP H0718101B2
- Authority
- JP
- Japan
- Prior art keywords
- strands
- steel cord
- wire
- strand
- diameter
- 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 - Lifetime
Links
- 229910000831 Steel Inorganic materials 0.000 title claims description 104
- 239000010959 steel Substances 0.000 title claims description 104
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 26
- 239000000203 mixture Substances 0.000 claims description 22
- 239000012535 impurity Substances 0.000 claims description 13
- 229910052742 iron Inorganic materials 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 229910052799 carbon Inorganic materials 0.000 claims description 11
- 241000254043 Melolonthinae Species 0.000 claims description 4
- 239000000463 material Substances 0.000 description 17
- 229910052802 copper Inorganic materials 0.000 description 13
- 230000000694 effects Effects 0.000 description 13
- 238000005491 wire drawing Methods 0.000 description 13
- 229910052748 manganese Inorganic materials 0.000 description 11
- 229910052759 nickel Inorganic materials 0.000 description 11
- 229910052717 sulfur Inorganic materials 0.000 description 11
- 230000007797 corrosion Effects 0.000 description 10
- 238000005260 corrosion Methods 0.000 description 10
- 239000000126 substance Substances 0.000 description 10
- 239000012779 reinforcing material Substances 0.000 description 9
- 229910052720 vanadium Inorganic materials 0.000 description 8
- 229910052698 phosphorus Inorganic materials 0.000 description 7
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 5
- 238000007747 plating Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- 229910001369 Brass Inorganic materials 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 229910001566 austenite Inorganic materials 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000001934 delay Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 229910000734 martensite Inorganic materials 0.000 description 2
- 229910001562 pearlite Inorganic materials 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 239000006104 solid solution Substances 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- 229910000677 High-carbon steel Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 241000446313 Lamella Species 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910001563 bainite Inorganic materials 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 229910001567 cementite Inorganic materials 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009661 fatigue test Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- KSOKAHYVTMZFBJ-UHFFFAOYSA-N iron;methane Chemical compound C.[Fe].[Fe].[Fe] KSOKAHYVTMZFBJ-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000007586 pull-out test Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 229910001948 sodium oxide Inorganic materials 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B1/00—Constructional features of ropes or cables
- D07B1/06—Ropes or cables built-up from metal wires, e.g. of section wires around a hemp core
- D07B1/0606—Reinforcing cords for rubber or plastic articles
- D07B1/066—Reinforcing cords for rubber or plastic articles the wires being made from special alloy or special steel composition
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2015—Strands
- D07B2201/2023—Strands with core
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2201/00—Ropes or cables
- D07B2201/20—Rope or cable components
- D07B2201/2015—Strands
- D07B2201/2046—Strands comprising fillers
-
- D—TEXTILES; PAPER
- D07—ROPES; CABLES OTHER THAN ELECTRIC
- D07B—ROPES OR CABLES IN GENERAL
- D07B2205/00—Rope or cable materials
- D07B2205/30—Inorganic materials
- D07B2205/3021—Metals
- D07B2205/3025—Steel
- D07B2205/3046—Steel characterised by the carbon content
- D07B2205/3057—Steel characterised by the carbon content having a high carbon content, e.g. greater than 0,8 percent respectively SHT or UHT wires
Landscapes
- Ropes Or Cables (AREA)
- Tires In General (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明はタイヤやコンベアベルト等の補強材として使用
され、高強度、耐靱性、耐腐食性およびゴムとの接着性
に優れたスチールコードおよび上記スチールコードを補
強材として用いたタイヤに関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention is used as a reinforcing material for tires, conveyor belts, etc., and has a high strength, toughness, corrosion resistance, and adhesion to rubber and a steel cord and The present invention relates to a tire using the steel cord as a reinforcing material.
（従来の技術） 従来、一般にこの種のスチールコードを熱間圧延後、調
整冷却した素線径が5.0〜6.4mmを有する線材を、伸線加
工およびパテンティング処理を繰り返して伸線し、プラ
スメッキを施した後、最終伸線加工によってスチールコ
ード用素線を形成し、上記素線を複数本撚り合わせて形
成されていた。(Prior Art) Conventionally, generally, after hot rolling of this type of steel cord, a regulated and cooled wire having a diameter of 5.0 to 6.4 mm is drawn by repeating wire drawing and patenting, After plating, a steel cord strand was formed by final wire drawing, and a plurality of the strands were twisted together.
そして、上記スチールコードの複数本が平行に引き揃え
られた状態でゴム材により被覆され、タイヤやコンベア
ベルト等に使用されている。Then, a plurality of the above steel cords are covered with a rubber material in a state where they are aligned in parallel and are used for a tire, a conveyor belt or the like.
ところで、上記スチールコードをゴム補強材として使用
したタイヤやコンベアベルト等の種々の製品が様々の使
用環境下において十分な耐久性、経済性、乗心地性等を
有するためには、特にスチールコードの各素線自体が耐
腐食性を有し、かつ強度的に優れていること、及びスチ
ールコード並びに各素線がゴム材とよく接着することが
要求されている。すなわち、スチールコードが補強材と
しての役割を充分に果すためには、高強度、高靱性でし
かも完全なゴムとの複合体になっていることが必要であ
る。By the way, in order for various products such as tires and conveyor belts using the above steel cord as a rubber reinforcing material to have sufficient durability, economy, and riding comfort under various use environments, in particular, steel cord It is required that each strand itself has corrosion resistance and is excellent in strength, and that the steel cord and each strand be well adhered to the rubber material. That is, in order for the steel cord to sufficiently fulfill its role as a reinforcing material, it is necessary that the steel cord has a high strength, a high toughness and a complete composite with rubber.
例えば、タイヤの場合、まず、スチールコードが高強
度、高靱性であり、かつ接着状態のよいことが必要であ
る。スチールコードが高強度、高靱性を有することによ
り、スチールコード単位重量当りの強力が向上し、その
結果、タイヤへの打込本数が減少し、タイヤの軽量化、
乗心地性および耐久性の向上が図れる。しかるに、スチ
ールコードとゴムとの接着状態が悪いと、走行時にコー
ドとゴム材とが剥離するいわゆるセパレーツ現象を起
し、タイヤの性能を著しく阻害するという問題が生じ
る。For example, in the case of a tire, first, it is necessary that the steel cord has high strength, high toughness, and good adhesion. Since the steel cord has high strength and high toughness, the strength per unit weight of the steel cord is improved, and as a result, the number of tires to be driven into the tire is reduced and the weight of the tire is reduced.
It is possible to improve riding comfort and durability. However, if the adhesion state between the steel cord and the rubber is poor, a so-called separate phenomenon occurs in which the cord and the rubber material are separated during running, which causes a problem that the tire performance is significantly impaired.
また、接着状態および耐腐食性が悪いと、ゴム中の水分
や外部より浸入した水分、塩分等によって素線に錆が急
速に発生し、コードの強力が大巾に低下したり、セパレ
ーツ現象を早めて、タイヤの耐久性を著しく阻害すると
いう問題があった。In addition, if the adhesive state and corrosion resistance are poor, rust will rapidly occur on the wires due to moisture in the rubber, moisture infiltrated from the outside, salt content, etc., and the strength of the cord will be greatly reduced, or the separation phenomenon will occur. Early on, there was a problem that the durability of the tire was significantly impaired.
そこで、上記問題をなくしゴムとの接着性を良くするた
め、表面にプラスメッキを施した複数本の素線（23）を
第８図（イ）〜（ト）に示すような横断面形状に撚り合
わせたスチールコード（24）（撚り構成１×3,1×4,1×
5,1×３×0.20＋６×0.38,1×12,3＋9,3＋９＋15で全て
クローズ撚）が広く使用されていた。しかし、上記スチ
ールコード（24）では各素線（23）同志が互いに略密着
して撚り合わされた構造であるため、ゴム材で被覆した
とき、ゴム材がスチールコード（24）の中心空間Ｘや内
部空間Ｙ、Ｚにまで浸入せず、しかも各素線（23）も夫
々完全にゴム材で被覆されず、ゴムとの接着が不十分で
あった。Therefore, in order to eliminate the above problems and improve the adhesiveness with rubber, a plurality of wires (23) with a positive plating on the surface are formed into a cross-sectional shape as shown in FIGS. Twisted steel cord (24) (twisted configuration 1 × 3,1 × 4,1 ×
5,1 × 3 × 0.20 + 6 × 0.38, 1 × 12,3 + 9,3 + 9 + 15 (all closed twists) were widely used. However, in the steel cord (24), since the strands (23) of the steel cord (23) are twisted in close contact with each other, when covered with a rubber material, the rubber material causes the central space X of the steel cord (24) and The wires did not penetrate into the internal spaces Y and Z, and the wires (23) were not completely covered with the rubber material, so that the adhesion with the rubber was insufficient.
このため、スチールコード（24）の中心や内部にできた
空間Ｘ、Ｙ、Ｚに、ゴム中の水分および外部より浸入し
た水分、塩分等が入り込み、空間Ｘ、Ｙ、Ｚの内部にス
チールコード（24）の長手方向に伝播し、錆の発生を促
進するという問題点があった。このため、最近ではゴム
の浸入性を良くした撚りのあまいいわゆるオープンコー
ドと称されるスチールコードが提案され、使用されてい
る。Therefore, the water in the rubber and the water and salt infiltrated from the outside enter the spaces X, Y, and Z formed in the center and inside of the steel cord (24), and the steel cords inside the spaces X, Y, and Z. There is a problem that it propagates in the longitudinal direction of (24) and promotes the generation of rust. For this reason, recently, a steel cord called a so-called open cord, which has a good twistability of rubber and has a twist, has been proposed and used.
（発明が解決しようとする課題） 最近のスチールコードにおいては、上述のようなオープ
ン構造にすることにより、ゴムとの接着性が改善された
が、補強材としてのスチールコードの強度、靱性の点
で、未だに十分なものではなかった。(Problems to be Solved by the Invention) In recent steel cords, by adopting the above-mentioned open structure, the adhesiveness with rubber has been improved, but the strength and toughness of the steel cord as a reinforcing material So it wasn't enough.
そこで、本発明者はスチールコードに用いられる素線の
金属組成およびスチールコードの撚り構成との組合わせ
について研究を重ねた結果、本発明をなすに至ったもの
である。Therefore, the present inventor has completed the present invention as a result of repeated studies on the combination of the metal composition of the wire used for the steel cord and the twisted configuration of the steel cord.
本発明の目的は、高強度、高靱性で、且つ撚加工性に優
れると共に耐腐食性を有し、ゴムとの接着性も優れたス
チールコードと、耐久性、経済性、乗心地性に優れ、長
寿命のタイヤを提供するにある。The object of the present invention is a steel cord which has high strength, high toughness, twistability, corrosion resistance, and adhesion to rubber, and durability, economy, and riding comfort. , To provide long life tires.
（課題を解決するための手段） 上記目的を達成するために、本発明の第１の発明である
スチールコードは、重量％で、C:0.75〜0.90％,Si:0.45
〜1.20％,Mn:0.30〜0.90％,Ni:0.05〜1.00％を含有し、
かつV:0.05〜1.00％、Cu:0.10〜0.50％の１種又は２種
を含有すると共に、残部が鉄及び不可避的不純物よりな
る素線径0.10〜0.50mmの素線を２本撚り合わせて成る。(Means for Solving the Problems) In order to achieve the above object, the steel cord according to the first invention of the present invention is C: 0.75 to 0.90%, Si: 0.45% by weight.
~ 1.20%, Mn: 0.30 ~ 0.90%, Ni: 0.05 ~ 1.00%,
In addition, V: 0.05 to 1.00%, Cu: 0.10 to 0.50% of 1 type or 2 types are contained, and the balance is made of iron and unavoidable impurities. Become.
第２の発明のスチールコードは、重量％で、C:0.75〜0.
90％,Si:0.45〜1.20％,Mn:0.30〜0.90％,Ni:0.05〜1.00
％を含有し、かつCu:0.10〜0.50％およびS:0.01〜0.04
％を含有すると共に、残部が鉄及び不可避的不純物より
なる素線径0.10〜0.50mmの素線を２本撚り合わせて成
る。The steel cord of the second invention is, by weight%, C: 0.75 to 0.
90%, Si: 0.45 to 1.20%, Mn: 0.30 to 0.90%, Ni: 0.05 to 1.00
%, And Cu: 0.10 to 0.50% and S: 0.01 to 0.04
%, With the balance being iron and unavoidable impurities, and two strands having a diameter of 0.10 to 0.50 mm.
第３の発明のスチールコードは、上記第１又は第２の発
明と同一の金属組成と素線径とを有する素線で以て２層
撚りにしたスチールコードであって、芯ストランドを３
本の素線、側ストランドを６本の素線で形成し、かつ側
素線の直径を芯素線の直径の略1.60〜1.80倍にして成
る。The steel cord of the third invention is a steel cord obtained by twisting two layers with a wire having the same metal composition and wire diameter as in the first or second invention, and having a core strand of 3
One strand and side strands are formed of six strands, and the diameter of the side strand is approximately 1.60 to 1.80 times the diameter of the core strand.
第４の発明のスチールコードは、前記第１又は第２の発
明と同一の金属組成と素線径とを有する素線で以て２層
撚りにしたスチールコードであって、芯を２本の素線、
側を６〜７本の素線で形成し、かつ芯素線と側素線の直
径を略同一にして成る。A steel cord according to a fourth invention is a steel cord obtained by twisting two layers with a wire having the same metal composition and wire diameter as in the first or second invention, and having two cores. Strand,
The side is formed by 6 to 7 strands, and the core strand and the side strands have substantially the same diameter.
第５の発明のスチールコードは、前記第１又は第２の発
明と同一の金属組成と素線径とを有する素線で以て２層
撚りにしたスチールコードであって、芯ストランドを３
本の素線、側ストランドを９本の素線で形成し、かつ側
素線の直径を側素線の直径の略1.05〜1.25倍にして成
る。A steel cord according to a fifth aspect of the invention is a steel cord obtained by twisting two layers with a strand having the same metal composition and strand diameter as those of the first or second aspect of the invention, and having a core strand of 3
A single strand and side strands are formed of nine strands, and the diameter of the side strand is approximately 1.05 to 1.25 times the diameter of the side strand.
第６の発明のスチールコードは、前記第１又は第２の発
明と同一の金属組成と素線径とを有する素線から成るス
チールコードであって、２本の素線を撚り合わせた撚線
群と２本の素線を撚り合わせていない素線束とを上記撚
線群と同一ピッチで撚り合わせ、かつ上記４本の素線径
を略同一にして成る。A steel cord according to a sixth aspect of the invention is a steel cord composed of a strand having the same metal composition and strand diameter as those of the first or second aspect of the invention, which is a twisted strand formed by twisting two strands together. The group and a bundle of strands in which two strands are not twisted are twisted at the same pitch as the strand group, and the diameters of the four strands are substantially the same.
第７の発明のスチールコードは、前記第１又は第２の発
明と同一の金属組成と素線径とを有する素線で以て３層
撚りにしたスチールコードであって、コアを２〜４本の
素線、中間層を７〜９本の素線、外層を12〜15本の素線
で形成し、かつ中間層の各素線の中心を結ぶ線上におけ
る各素線間の間隙の総和と、外層の各素線の中心を結ぶ
線上における各素線間の間隙の総和を、上記各層の各素
線の中心を結ぶ円周の長さの５〜20％として成る。A steel cord according to a seventh aspect of the invention is a steel cord obtained by twisting three layers with an element wire having the same metal composition and element wire diameter as in the first or second invention, and having a core of 2 to 4 Total number of gaps between each strand on the line connecting the center of each strand of the intermediate layer, which is formed by 7 to 9 strands of the intermediate layer and 12 to 15 strands of the outer layer And the total of the gaps between the strands on the line connecting the centers of the strands of the outer layer is 5 to 20% of the length of the circumference connecting the centers of the strands of each layer.
ところで、少くとも上記中間層と外層は各素線間に隙間
を有して撚り合わせて成るものである。By the way, at least the intermediate layer and the outer layer are formed by twisting each other with a gap between each element wire.
第８の発明であるタイヤは、上述のように構成されたス
チールコードの複数本を、ベルト部、カーカス部、チェ
ーファ部の少くとも一部に有して成る。上記所定本数の
スチールコードは、予めゴムに配列埋設して略ベルト状
の補強材として、タイヤの所定部分に設けると作業性が
向上する。A tire according to an eighth aspect of the invention has a plurality of steel cords configured as described above in at least a part of a belt portion, a carcass portion, and a chafer portion. The workability is improved if the predetermined number of steel cords are arranged and embedded in rubber in advance and provided as a substantially belt-shaped reinforcing member at a predetermined portion of the tire.
次に、各添加元素の化学成分を上記のように限定した理
由について詳述する。Next, the reason why the chemical composition of each additive element is limited as described above will be described in detail.
Ｃはこの種のスチールコードに要求される強度を確保す
るために重要であり、0.75％以上が必要である。しか
し、Ｃ量を高めるほど高強度のスチールコードが得られ
るが、高くしすぎると伸線時及び撚線時に溶接部やＣ偏
析部において断線が発生しやすく、また熱処理において
も初析セメンタイトが発生し、伸線、撚線に悪影響をも
たらすので、0.90％以下が好ましい。C is important to secure the strength required for this type of steel cord, and 0.75% or more is necessary. However, the higher the amount of C, the higher the strength of the steel cord is obtained. However, if the amount of C is too high, wire breakage easily occurs in the welded portion and the C segregation portion during wire drawing and twisting, and proeutectoid cementite also occurs during heat treatment. However, 0.90% or less is preferable because it has a bad effect on the wire drawing and twisting.
Siは鋼の脱酸のため必要であり、またフェライトを固溶
強化するため、パテンティング処理材の引張強さを高め
るのに有効である。したがって、Ｃの場合と同様、所望
の引張強さを得るには、Si含有量は0.45％〜1.20％の範
囲が好ましい。1.20％を越えてSiを多量に添加すると、
フェライトの靱延性が劣化し、SiO2系の非延性介在物が
生成されるため、伸線時、撚線時において断線頻度が高
くなり好ましくない。Si is necessary for deoxidizing the steel, and since it solid-solution strengthens ferrite, it is effective in increasing the tensile strength of the patented material. Therefore, as in the case of C, in order to obtain the desired tensile strength, the Si content is preferably in the range of 0.45% to 1.20%. If a large amount of Si is added exceeding 1.20%,
Since the toughness and ductility of ferrite is deteriorated and SiO 2 -based non-ductile inclusions are generated, the frequency of wire breakage during wire drawing and twisting is unfavorable.
MnはSiと同様に脱酸のために必要であるが、同時に焼入
性を向上させ、引張強さを向上させるという効果があ
る。Mn, like Si, is necessary for deoxidation, but at the same time, it has the effect of improving hardenability and tensile strength.
上記効果を有効に発揮させるためには、Mn含有量は、0.
30％以上必要であるが、0.90％を越えると、成分の偏析
傾向が強くなり、靱性及び延性を低下させて好ましくな
いので、0.30〜0.90％の範囲が好適である。In order to effectively exhibit the above effects, the Mn content is 0.
The content is required to be 30% or more, but if it exceeds 0.90%, the segregation tendency of the components becomes strong and the toughness and ductility are lowered, which is not preferable, so the range of 0.30 to 0.90% is preferable.
次に、Niは、Siと同様、フェライト中に固溶し、僅かに
パテンティング処理材の引張強さを高める効果がある。Next, Ni, like Si, forms a solid solution in ferrite and has the effect of slightly increasing the tensile strength of the patented material.
本発明者は、Niを適当量添加した鋼について、伸線実験
を行った結果、NiがＣやＮによる時効を遅らせ、鋼線の
靱延性を低下させることなく、高強度極細線を製造でき
ることを見出したのである。上記時効を遅らせるNiの効
果は、捻回試験における縦割れ発生を抑制するばかりで
なく、一定の極細線の引張強さのものにおいてでも、従
来の高炭素鋼線に比べて高い絞りを示すため、伸線時、
撚線時の断線度合を低減することができる。しかし、Ni
は鋼線の焼入れ性を上げるため、1.00％を越えて添加す
ると、鉛パテンティング時に完全なパーライト組織が得
られず、マルテンサイトやベーナイト組織が発生し、伸
線加工、撚線加工が困難となる。またNiはMs点を下げる
ため、多量に添加すると、組織中の残留オーステナイト
量が増加し、伸線時、撚線時にこれらがマテンサイトに
変態するので、伸線、撚線ができ難くなる。よって、Ni
含有量は0.05〜1.00％の範囲が好ましい。The present inventor has conducted a wire drawing experiment on a steel to which an appropriate amount of Ni has been added, and as a result, Ni delays the aging due to C and N, and can produce a high strength ultrafine wire without lowering the toughness and ductility of the steel wire. Was found. The effect of Ni that delays the above aging not only suppresses the occurrence of vertical cracks in the twisting test, but also shows a higher drawing than conventional high carbon steel wire even with a certain ultrafine wire tensile strength. , During wire drawing,
It is possible to reduce the degree of wire breakage during twisting. But Ni
In order to improve the hardenability of steel wire, if added in excess of 1.00%, a complete pearlite structure cannot be obtained during lead patenting, and martensite and bainite structure are generated, making wire drawing and twisting difficult. Become. Further, since Ni lowers the Ms point, if it is added in a large amount, the amount of retained austenite in the structure increases, and these are transformed into martensite during wire drawing and twisting, which makes it difficult to perform wire drawing and twisting. Therefore, Ni
The content is preferably in the range of 0.05 to 1.00%.
Ｖは微細な炭窒化物として分散して、オーステナイト粒
度やノジュールサイズを粗大化させず、パーライトラメ
ラ間隔も狭くする効果を有し、結晶粒界の腐食防止に効
果があり、各素線の耐腐食性を向上させるとともに、伸
線加工性を向上させる。V disperses as fine carbonitrides, does not coarsen the austenite grain size and nodule size, has the effect of narrowing the pearlite lamella spacing, has the effect of preventing the corrosion of crystal grain boundaries, and has the effect of reducing the resistance of each wire. Improves corrosivity and wire drawing workability.
上記効果を発揮させるためには0.05％以上含有させるこ
とが必要であるが、1.％を越えて過多に含有させると靱
性や延性を劣化させる。よって、Ｖ含有量は0.05〜1.0
％の範囲が好ましい。In order to exert the above effect, it is necessary to contain 0.05% or more, but if it is contained in excess of 1.%, toughness and ductility are deteriorated. Therefore, the V content is 0.05 to 1.0.
% Range is preferred.
CuはH2より貴な金属であり、水素発生型の腐食を防止
し、空気中で錆が発生しにくい性質があり、耐候性を有
している。Cu is a metal that is more precious than H 2 , has the property of preventing hydrogen generation type corrosion, being less prone to rust in the air, and having weather resistance.
上記効果を発揮させるたるめには0.10％以上が必要であ
るが、過多になると脆くなる。よって、Cu含有量は0.10
〜0.50％の範囲が好ましい。0.10% or more is necessary for sagging to exert the above effect, but if too much, it becomes brittle. Therefore, the Cu content is 0.10
The range of 0.50% is preferable.
なお、Ｖ及びCuは少なくとも１種を含有ればよいが、V,
Cuの２種を含有すれば、耐腐食性を一層向上することが
できる。In addition, V and Cu may contain at least one kind, but V, Cu
If two kinds of Cu are contained, the corrosion resistance can be further improved.
Ｓは有害元素で熱間脆性をおこす性質があるが、Cuと共
に適量に添加することにより、CuとＳが結合し、不動態
化して耐食効果が発揮される。しかし0.04％を越えると
脆化が著しいので、ＳはCuと同時に添加し、0.01〜0.04
％の範囲とするのが好ましい。S is a harmful element and has the property of causing hot embrittlement. However, when added in an appropriate amount together with Cu, Cu and S are combined and passivated to exert a corrosion resistance effect. However, if it exceeds 0.04%, embrittlement is remarkable, so S is added at the same time as Cu, and 0.01-0.04
It is preferably in the range of%.
次に、スチールコードの構成についてみる。Next, let us look at the structure of the steel cord.
スチールコードの隣り合う素線間の隙間は、ゴムが浸入
可能な範囲であればよいが、上記隙間が余り広すぎる
と、撚り構成との関係で、撚りが不安定となり、ゴムと
の複合材としてのモジュラスが低下するばかりか、強度
的にも不十分となる傾向になる。The gap between the adjacent strands of the steel cord should be within the range where rubber can penetrate, but if the gap is too wide, the twisting will become unstable due to the twisted structure, and the composite material with rubber will Not only the modulus decreases but also the strength tends to be insufficient.
よって、第３の発明においては、芯を３本の素線、側を
６本の素線で構成し、かつ側素線の直径を芯素線の直径
の略1.60〜1.80倍とし、第４の発明においては、芯を２
本の素線、側を６〜７本の素線で構成し、かつ芯素線と
側素線の直径を略同一とし、第５の発明では、芯を３本
の素線、側を９本の素線で構成し、かつ芯素線の直径を
側素線の直径の略1.05〜1.25倍とし、第６の発明では、
２本の撚線群と２本の素線束とを撚り合わせた構成で、
４本の素線径を同一とし、更に、第７の発明では、中間
層及び外層の各素線の中心を結ぶ線上における各素線間
の間隙の総和を、上記中間層及び外層の各素線の中心を
結ぶ円周の長さの５〜20％として、隣り合う各素線間に
隙間を設けるようにしたものである。Therefore, in the third invention, the core is composed of three strands and the side is composed of six strands, and the diameter of the side strand is approximately 1.60 to 1.80 times the diameter of the core strand. In the invention of the
In the fifth invention, the core is composed of 6 to 7 strands, and the core strand and the side strands have substantially the same diameter. And a core wire having a diameter of about 1.05 to 1.25 times the diameter of the side wire.
With a configuration in which two twisted wire groups and two strands of wire are twisted together,
The diameters of the four strands are the same, and further, in the seventh invention, the total sum of the gaps between the strands on the line connecting the centers of the strands of the intermediate layer and the outer layer is calculated as follows. The length of the circumference connecting the centers of the wires is set to 5 to 20%, and a gap is provided between each adjacent wire.
ところで、上記スチールコードは、一般的に、表面にブ
ラスメッキ、ブロンズメッキ等のメッキ処理を施し、素
線径が0.10〜0.50mmを有する素線を撚りピッチ5.0〜20.
0mmで撚り合わせるが、撚り方向、撚りピッチは適宜選
択するもので、同方向撚り、同一ピッチでも可能であ
る。By the way, the above-mentioned steel cord is generally subjected to a plating treatment such as brass plating or bronze plating on the surface thereof, and a strand having a strand diameter of 0.10 to 0.50 mm is twisted at a pitch of 5.0 to 20.
Twisting is performed at 0 mm, but the twisting direction and the twisting pitch are appropriately selected, and twisting in the same direction and the same pitch are also possible.
以下、本発明の一実施例を図面に基づいて説明する。An embodiment of the present invention will be described below with reference to the drawings.
（実施例１） 第１図に示すように、化学成分が重量％で、C:0.83％,S
i:0.71％,Mn:0.52％,Ni:0.25％のほか、P:0.012％,S:0.
004％,V:0.23％を含有し、残部が鉄及び不可避的不純物
から成り、素線径0.30mmの素線（１）を、１×２の撚り
構成で、撚りピッチ14.0mm、Ｓ撚りで撚り合わせてスチ
ールコード（２）を得た。(Example 1) As shown in FIG. 1, the chemical composition is wt%, C: 0.83%, S
i: 0.71%, Mn: 0.52%, Ni: 0.25%, P: 0.012%, S: 0.
Containing 004%, V: 0.23%, the balance consisting of iron and unavoidable impurities, and a strand (1) with a strand diameter of 0.30 mm, with a 1 × 2 twist structure, a twist pitch of 14.0 mm, and an S twist The steel cord (2) was obtained by twisting.
（実施例２） 第２図に示すように、化学成分が重量％で、C:0.81％,S
i:0.84％,Mn:0.58％,Ni:0.21％のほか、P:0.01％,S:0.0
07％,Cu:0.33％を含有し、残部が鉄及び不可避的不純物
から成る、素線径0.20mmの芯ストランドとなる素線
（３）と素線径0.36mmの側ストランドとなる素線（４）
とを、３＋６の撚り構成で、撚りピッチ10.0/18.0mm、
撚り方向S/Z撚りで撚り合わせて、２層撚りのスチール
コード（５）を得た。(Example 2) As shown in FIG. 2, the chemical composition is% by weight, C: 0.81%, S
i: 0.84%, Mn: 0.58%, Ni: 0.21%, P: 0.01%, S: 0.0
(3) containing 07% and Cu: 0.33%, the balance consisting of iron and unavoidable impurities, and forming the core strand with a diameter of 0.20 mm (3) and the side strand with a diameter of 0.36 mm ( 4)
With 3 + 6 twist configuration, twist pitch 10.0 / 18.0mm,
Twisting direction S / Z twisting was carried out to obtain a two-layer twisted steel cord (5).
（実施例３） 第３図（イ）に示すように、化学成分が重量％で、C:0.
77％,Si:0.56％,Mn:0.48％,Ni:0.50％のほか、P:0.007
％,S:0.003％,V:0.61％を含有し、残部が鉄及び不可避
的不純物から成る素線径0.22mmの素線（６）で以て、芯
となる２本の素線束又は撚線と側となる６本の素線
（６）とを、２＋６の撚り構成で、撚りピッチ12.0/12.
0mm、撚り方向S/S撚りで撚り合わせて２層撚りのスチー
ルコード（７）を得た。(Example 3) As shown in FIG. 3 (a), the chemical composition was wt% and C: 0.
77%, Si: 0.56%, Mn: 0.48%, Ni: 0.50%, P: 0.007
%, S: 0.003%, V: 0.61%, with the balance being iron and unavoidable impurities with a wire diameter of 0.22 mm (6), consisting of two core wire bundles or twisted wires The 6 strands (6) on the side and the side have a twist structure of 2 + 6 and a twist pitch of 12.0 / 12.
A steel cord (7) having a two-layer twist was obtained by twisting with 0 mm and a twist direction S / S twist.
また、第３図（ロ）に示すように、化学成分が重量％
で、C:0.79％,Si:0.62％,Mn:0.49％,Ni:0.46％のほか、
P:0.008％,S:0.005％,V:0.28％,Cu:0.37％を含有し、残
部が鉄及び不可避的不純物から成る素線径0.22mmの素線
（８）で以て、２＋７の撚り構成で、撚りピッチ10.0/1
2.0mm、撚り方向S/S撚りで撚り合わせて２層撚りのスチ
ールコード（９）を得た。この場合、撚りピッチを同
一、撚り方向を相異することも可能である。Further, as shown in FIG.
So, in addition to C: 0.79%, Si: 0.62%, Mn: 0.49%, Ni: 0.46%,
2 + 7 twist with a wire (8) containing P: 0.008%, S: 0.005%, V: 0.28%, Cu: 0.37% and the balance being iron and unavoidable impurities with a wire diameter of 0.22 mm Composition, twist pitch 10.0 / 1
The steel cord (9) having a two-layer twist was obtained by twisting with 2.0 mm and S / S twist in the twist direction. In this case, it is possible to use the same twist pitch and different twist directions.
（実施例４） 第４図（イ）に示すように、化学成分が重量％で、C:0.
79％,Si:0.62％,Mn:0.49％,Ni:0.46％のほか、P:0.008
％,S:0.005％,V:0.28％,Cu:0.37を含有し、残部が鉄及
び不可避的不純物から成る素線径0.22mmの芯ストランド
となる素線（10）と素線径0.20mmの側ストランドとなる
素線（11）とを、撚り構成３＋９、撚りピッチ14.5/14.
5mm、撚り方向S/S撚りで撚り合わせて２層撚りのスチー
ルコード（12）を得た。(Example 4) As shown in FIG. 4 (a), the chemical composition was% by weight, and C: 0.
79%, Si: 0.62%, Mn: 0.49%, Ni: 0.46%, P: 0.008
%, S: 0.005%, V: 0.28%, Cu: 0.37, with the balance consisting of iron and unavoidable impurities with a diameter of 0.22 mm and forming a core strand (10) and a diameter of 0.20 mm. With the strands (11) that will be the side strands, twist configuration 3 + 9, twist pitch 14.5 / 14.
A steel cord (12) having a two-layer twist was obtained by twisting with a twist of 5 mm in the twist direction S / S twist.
また、第４図（ロ）は、化学成分が重量％で、C:0.80
％,Si:0.87％,Mn:0.53％,Ni:0.68％のほか、P:0.012％,
S:0.003％,V:0.56％,Cu:0.15％を含有し、残部が鉄及び
不可避的不純物から成る素線（10）（11）とで以て、上
述と同一の撚り構成３×0.22＋９×0.20、撚り方向S/S
で、撚りピッチを6.0/12.0mmにして撚り合わせたスチー
ルコード（13）を示す。In addition, in Fig. 4 (b), the chemical composition is wt% and C: 0.80.
%, Si: 0.87%, Mn: 0.53%, Ni: 0.68%, P: 0.012%,
The same twisted structure as the above, with a strand (10) (11) containing S: 0.003%, V: 0.56%, Cu: 0.15% and the balance being iron and unavoidable impurities 3 x 0.22 + 9 × 0.20, twist direction S / S
Shows a steel cord (13) twisted with a twist pitch of 6.0 / 12.0 mm.
（実施例５） 第５図に示すスチールコード（16）は、化学成分が重量
％で、C:0.85％,Si:0.97％,Mn:0.51％,Ni:0.81％のほ
か、P:0.008％,S:0.015％,Cu:0.26％を含有し、残部が
鉄及び不可避的不純物から成る素線径0.25mmの素線４本
で以て、２本の素線束（14）と、撚り方向Ｓ撚り、撚り
ピッチ14.0mmで２本の素線を撚った撚線（15）とを、上
記撚線と同一ピッチで撚り合わせて成る。(Embodiment 5) The steel cord (16) shown in FIG. 5 has a chemical composition of wt%, C: 0.85%, Si: 0.97%, Mn: 0.51%, Ni: 0.81%, and P: 0.008%. , S: 0.015%, Cu: 0.26%, and the balance consisting of iron and unavoidable impurities with 4 strands with a diameter of 0.25 mm, 2 strands (14) and twisting direction S Twisting, a twisted wire (15) obtained by twisting two strands with a twist pitch of 14.0 mm, and twisted at the same pitch as the above twisted wire.
（実施例６） 第６図（イ）に示すスチールコード（20）は、化学成分
が重量％で、C:0.82％,Si:0.49％,Mn:0.54％,Ni:0.77％
のほか、P:0.009％,S:0.035％,Cu:0.41％を含有し、残
部が鉄及び不可避的不純物から成る素線径0.20mmの素線
（17）で以て、撚り構成３＋８＋12、撚り方向S/S/Z撚
り、撚りピッチ5/10.5/15.5mmで撚り合わせ、かつ中間
層（18）及び外層（19）の各素線（17）の中心を結ぶ線
上における各素線間の間隙の総和を、上記中心を結ぶ円
周の長さの５〜20％になるように構成したものである。(Example 6) The steel cord (20) shown in Fig. 6 (a) has a chemical composition of wt%, C: 0.82%, Si: 0.49%, Mn: 0.54%, Ni: 0.77%.
In addition, it contains P: 0.009%, S: 0.035%, Cu: 0.41%, and the balance is iron and unavoidable impurities, and the wire diameter is 0.20 mm (17). Twist structure 3 + 8 + 12, twist Direction S / S / Z twist, twisted at a twist pitch of 5 / 10.5 / 15.5 mm, and the gap between the strands on the line connecting the centers of the strands (17) of the intermediate layer (18) and outer layer (19) Is configured so that it is 5 to 20% of the length of the circumference connecting the above centers.
また、第６図（ロ）に示すスチールコード（22）は、化
学成分が重量％で、C:0.81％,Si:0.49％,Mn:0.51％,Ni:
0.62％のほか、P:0.007％,S:0.030％,V:0.10％、Cu:0.3
8％を含有し、残部が鉄及び不可避的不純物から成る素
線径0.20mmの素線で以て、撚り構成４＋９＋14、撚り方
向S/S/Z撚り、撚りピッチ5/10.5/15.5mmで撚り合わせ、
かつ中間層及び外層の各素線間の間隙の総和を、上記中
心を結ぶ円周の長さの５〜20％になるように構成したも
のである。The steel cord (22) shown in Fig. 6 (b) has a chemical composition of wt%, C: 0.81%, Si: 0.49%, Mn: 0.51%, Ni:
0.62%, P: 0.007%, S: 0.030%, V: 0.10%, Cu: 0.3
Stranded 4 + 9 + 14, twist direction S / S / Z twist, twist pitch 5 / 10.5 / 15.5mm, with 8% wire and balance 0.2% of iron and unavoidable impurities Together,
Further, the sum of the gaps between the strands of the intermediate layer and the outer layer is configured to be 5 to 20% of the length of the circumference connecting the centers.
ところで、この実施例６の場合、各層の素線本数は、コ
アが２〜４本、中間層が７〜９本、外層が12〜15本が適
当である。By the way, in the case of Example 6, the number of strands of each layer is suitably 2 to 4 for the core, 7 to 9 for the intermediate layer, and 12 to 15 for the outer layer.
（実施例７） 第７図に示すように、上記実施例１〜６で得られたスチ
ールコードのうち、例えば、実施例２のスチールコード
（５）複数本を並列して配置してゴム材により被覆して
補強材（Ｓ）を形成し、この補強材（Ｓ）を、タイヤの
ベルト部（Ta）、カーカス部（Tb）に埋設して所望のタ
イヤ（Ｔ）を構成する。(Example 7) As shown in FIG. 7, among the steel cords obtained in Examples 1 to 6, for example, a plurality of steel cords (5) of Example 2 are arranged in parallel to form a rubber material. To form a reinforcing material (S), and the reinforcing material (S) is embedded in the belt portion (Ta) and the carcass portion (Tb) of the tire to form a desired tire (T).
尚、上記補強材（Ｓ）は、タイヤのベルト部、カーカス
部、チェーファ部（Tc）の全部又は一部に配設すること
も可能である。The reinforcing material (S) can be provided on all or part of the belt portion, carcass portion, and chafer portion (Tc) of the tire.
次に、本発明のスチールコードと従来材を用いた比較用
スチールコードについて行った比較テストの結果につい
て説明する。Next, the result of the comparison test performed on the steel cord of the present invention and the comparative steel cord using the conventional material will be described.
第１表は本発明用の改良線材と比較用としたスチールコ
ードの従来線材との主要化学成分を示す。Table 1 shows the major chemical components of the improved wire rod of the present invention and the conventional steel cord wire for comparison.
（表中：線材番号Ａは従来線材、線材番号Ｂ〜Ｉは改良
線材である。） 上記線材（素線径5.5mm）Ａ〜Ｉを、伸線加工、鉛パテ
ンティング処理を繰返し、ブラスメッキ処理を施した
後、最終湿式伸線加工によって、素線径0.25mmの素線
〜に夫々仕上げた。 (In the table: Wire material number A is a conventional wire material, and wire material numbers B to I are improved wire materials.) The above wire materials (strand diameter 5.5 mm) A to I are repeatedly subjected to wire drawing and lead patenting treatment, and brass plated. After the treatment, the final wet drawing process was carried out to obtain each wire having a wire diameter of 0.25 mm.
そして、これら９種の素線〜について、引張強さ、
絞り及び捻回値の機械的性質を測定したところ、第２表
の如き結果を得た。And about these 9 kinds of strands, tensile strength,
When the mechanical properties of the squeeze and twist values were measured, the results shown in Table 2 were obtained.
上記第２表から明らかなように、従来線材Ａの素線は
引張強さ330kg/mm2、捻回値31回であったのに対し、改
良線材Ｂ〜Ｉの素線〜は、いずれも370kg/mm2以上
の高い引張り強さを有すると共に絞りも十分にあり、し
かもこのような高強度であっても40回以上の高い捻回値
を得ることが判明した。 As is clear from Table 2 above, the conventional wire rod A had a tensile strength of 330 kg / mm 2 and a twist value of 31 times, whereas the improved wire rods B to I all had It has been found that it has a high tensile strength of 370 kg / mm 2 or more and sufficient drawing, and even with such high strength, it can obtain a high twist value of 40 times or more.
次に、これらの素線〜を用いて、第３表の撚り構成
のスチールコード１〜30を作り、これらのスチールコー
ド１〜30をゴムに埋設して接着および疲労試験用サンプ
ル〜を作り、引抜試験、発錆度測定を行ったとこ
ろ、第４表に示す如き結果を得た。Next, using these strands ~, steel cords 1 to 30 having a twisted structure shown in Table 3 are prepared, and these steel cords 1 to 30 are embedded in rubber to prepare samples for adhesion and fatigue test. When the pull-out test and the rusting degree were measured, the results shown in Table 4 were obtained.
第４表において、引抜力保持率とは、食塩水中に浸漬す
る前にスチールコードから引き抜た引抜力と、20％食塩
水中に一週間浸漬した後にスチールコードをゴムから引
き抜いた引抜力との関係を示したもので、スチールコー
ドが未老化のときの比率は100％であり、数値が大きい
程老化（劣化）が少なく、良好であることを示してい
る。 In Table 4, the pulling force retention rate is defined as the pulling force that is pulled out from the steel cord before it is dipped in saline solution and the pulling force when the steel cord is pulled out from the rubber after dipped in 20% saline solution for one week. The relationship is shown, and the ratio when the steel cord is unaged is 100%, and the larger the value is, the less aging (deterioration) is and the better.
また、接着劣化長さとは、ゴムに埋設したスチールコー
ド即ちサンプルを長さ15cmに切断し、一方の端面を腐食
液が浸透しないように合成樹脂塗料で被覆し、室温下で
濃度10％の水酸化ナトリウム水溶液に24時間浸漬した
後、スチールコードの腐食によりスチールコードとゴム
間の接着劣化した部分、すなわちスチールコードとゴム
が接着していない部分の長さを測定し、その測定値をmm
で表わしたものである。150mmとは全長にわたって接着
劣化しており、数値が大きい程、錆の拡散が著しいこと
を示している。In addition, the adhesion deterioration length means that a steel cord embedded in rubber, that is, a sample is cut into a length of 15 cm, and one end surface is covered with a synthetic resin paint so that the corrosive liquid does not penetrate, and a 10% concentration of water at room temperature is used. After soaking in the sodium oxide aqueous solution for 24 hours, measure the length of the part where the adhesion between the steel cord and rubber deteriorates due to corrosion of the steel cord, that is, the part where the steel cord and rubber are not bonded, and measure the value in mm.
It is represented by. The adhesion of 150 mm is deteriorated over the entire length, and the larger the value is, the more remarkable the diffusion of rust is.
第４表から明らかなように、従来の撚り構成のスチール
コードで従来線材からなる素線及び改良線材からなる素
線を用いたサンプル〜は、本発明のもの〜に比
して引抜力保持率が極めて低く、また錆の拡散が著しい
ものである。As is clear from Table 4, the samples with the conventional twisted steel cord using the conventional wire and the improved wire have a pulling force retention rate higher than those of the present invention. Is extremely low and the rust is remarkably diffused.
次に、本発明のスチールコードをベルト部、カーカス部
に用いてタイヤを試作し、耐久性及び運動性能を測定し
た。Next, a tire was prototyped using the steel cord of the present invention in the belt portion and the carcass portion, and durability and exercise performance were measured.
耐久性の評価は、長距離の実車走行テスト後、タイヤを
切断してスチールコードの破損状況、発錆状況を測定し
た。また、運動性能評価は、コーナリングパワーと乗心
地性、経済性を測定した。To evaluate the durability, after running a long-distance vehicle test, the tires were cut and the steel cords were damaged and rusted. In the evaluation of exercise performance, cornering power, riding comfort and economy were measured.
この結果、スチールコードの破断及び発錆については、
本発明のスチールコードを使用したタイヤが従来タイヤ
に比して非常に効果があることが確認されたが、コーナ
リングパワー、乗心地性については余り大差はなかっ
た。しかし、経済性については、本発明のものは、高強
度のため、スチールコードの使用量が約12％減少するこ
とができ、タイヤの軽量化により、走行距離に対して、
燃料消費量の削減が可能となった。As a result, regarding the breaking and rusting of the steel cord,
It was confirmed that the tire using the steel cord of the present invention is very effective as compared with the conventional tire, but there was not much difference in cornering power and riding comfort. However, in terms of economic efficiency, the one of the present invention can reduce the usage amount of the steel cord by about 12% due to the high strength, and due to the weight reduction of the tire, with respect to the mileage,
It has become possible to reduce fuel consumption.
（発明の効果） 本発明は、特定の金属組成と撚り構造にしたので、伸
線、撚線時における塑性加工性が低下せず、優れた靱性
と強度及び耐腐蝕性を有し、またゴム接着性及びゴム浸
入に優れ、素線表面がゴムによって完全に被覆可能で、
スチールコード内部への水分等の侵入を防止できる。(Effect of the invention) Since the present invention has a specific metal composition and a twisted structure, the plastic workability during wire drawing and twisting does not deteriorate, and it has excellent toughness, strength and corrosion resistance, and rubber Excellent adhesion and rubber penetration, the surface of the wire can be completely covered with rubber,
It is possible to prevent water from entering the steel cord.
また、引張強度が高いけれども捻回値が従来材に比して
高いので、撚線工程において撚加工が容易である。この
ため、特に素線間に隙間を設けるいわゆるオープン構造
のスチールコードの製造に適し、撚工程における断線が
少なく、またくせ付けも容易で所望の隙間（オーブン
度）を形成できる。Further, although the tensile strength is high, the twist value is higher than that of the conventional material, so that the twisting process is easy in the twisting process. Therefore, it is particularly suitable for the production of a so-called open structure steel cord in which a gap is provided between the strands, the number of breaks in the twisting process is small, and the lacing is easy and a desired gap (oven degree) can be formed.
更に、本発明のスチールコードをベルト部、カーカス
部、チェーファ部の全部又は一部に埋設したタイヤは、
経済性、乗心地性および耐久性が大巾に向上すると共に
軽量化が図れる。また、特に路面と直接接触するトレッ
ドに近いベルト部に設けた場合、著しい効果を奏する。Further, the tire in which the steel cord of the present invention is embedded in the belt portion, the carcass portion, or the chafer portion in whole or in part,
The economy, riding comfort and durability are greatly improved and the weight is reduced. Further, particularly when it is provided on the belt portion near the tread that is in direct contact with the road surface, a remarkable effect is exhibited.
第１図は実施例１のスチールコードの断面図、第２図は
実施例２のスチールコードの断面図、第３図（イ），
（ロ）は実施例３のスチールコードの断面図、第４図
（イ），（ロ）は実施例４のスチールコードの断面図、
第５図は実施例５のスチールコードを示し、（イ）は正
面図、（ロ）は（イ）のＩ−Ｉ〜IV−IV線の切断端面
図、第６図は（イ），（ロ）は実施例６のスチールコー
ドの断面図、第７図は本発明のスチールコードを用いた
タイヤの一実施例を示し、（イ）は概略断面図、（ロ）
は（イ）における補強材の概略説明図、第８図（イ），
（ロ），（ハ），（ニ），（ホ），（ヘ），（ト）は夫
々従来の異なるスチールコードの断面図である。 （１），（３），（４），（６），（８），（10），
（11），（17），（21）……素線、（２），（５），
（７），（９），（12），（13），（16），（20），
（22）……スチールコード、（14）……素線束、（15）
……撚線、（18）……中間層、（19）……外層、Ｔ……
タイヤ、Ta……ベルト部、Tb……カーカス部、Tc……チ
ェーファ部、Ｓ……補強材。FIG. 1 is a sectional view of a steel cord of Example 1, FIG. 2 is a sectional view of a steel cord of Example 2, FIG. 3 (a),
(B) is a cross-sectional view of the steel cord of Example 3, FIGS. 4 (A) and (B) are cross-sectional views of the steel cord of Example 4,
FIG. 5 shows a steel cord of Example 5, (a) is a front view, (b) is a sectional end view taken along the line II-IV-IV of (a), and FIG. 6 is (a), ( (B) is a sectional view of the steel cord of Example 6, FIG. 7 shows an example of a tire using the steel cord of the present invention, (a) is a schematic sectional view, (b)
Is a schematic explanatory view of the reinforcing material in (a), FIG. 8 (a),
(B), (c), (d), (e), (f), and (g) are sectional views of different conventional steel cords, respectively. (1), (3), (4), (6), (8), (10),
(11), (17), (21) ... strands, (2), (5),
(7), (9), (12), (13), (16), (20),
(22) …… Steel cord, (14) …… Wire bundle, (15)
…… Twisted wire, (18) …… Intermediate layer, (19) …… Outer layer, T ……
Tires, Ta ... Belt, Tb ... Carcass, Tc ... Chefer, S ... Reinforcement material.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭52−91947（ＪＰ，Ａ) 特開 昭52−74057（ＪＰ，Ａ) 特開 昭55−30499（ＪＰ，Ａ) 特開 昭57−193253（ＪＰ，Ａ) 特開 昭48−17462（ＪＰ，Ａ) 特開 昭62−256950（ＪＰ，Ａ) 特開 昭53−56122（ＪＰ，Ａ) 特開 昭61−177326（ＪＰ，Ａ) 特開 昭62−18678（ＪＰ，Ａ) 特開 昭62−141144（ＪＰ，Ａ) 特開 昭63−130404（ＪＰ，Ａ) 実公 昭56−14396（ＪＰ，Ｙ１) ─────────────────────────────────────────────────── ─── Continuation of front page (56) Reference JP-A-52-91947 (JP, A) JP-A-52-74057 (JP, A) JP-A-55-30499 (JP, A) JP-A-57- 193253 (JP, A) JP 48-17462 (JP, A) JP 62-256950 (JP, A) JP 53-56122 (JP, A) JP 61-177326 (JP, A) JP-A-62-18678 (JP, A) JP-A-62-141144 (JP, A) JP-A-63-130404 (JP, A) Jikho-56-14396 (JP, Y1)
Claims (8)
0、Mn:0.30〜0.90、Ni:0.05〜1.00を含有し、かつV:0.0
5〜1.00、Cu:0.10〜0.50の１種又は２種を含有すると共
に、残部が鉄及び不可避的不純物よりなる素線径0.10〜
0.50mmの素線を２本撚り合わせて成るスチールコード。1. In weight%, C: 0.75 to 0.90, Si: 0.45 to 1.2
0, Mn: 0.30 to 0.90, Ni: contains 0.05 to 1.00, and V: 0.0
5 to 1.00, Cu: 0.10 to 0.50, containing 1 type or 2 types, and the balance consisting of iron and unavoidable impurities.
A steel cord made by twisting two 0.50 mm strands together.
0、Mn:0.30〜0.90、Ni:0.05〜1.00を含有し、かつCu:0.
10〜0.50およびS:0.01〜0.04を含有すると共に、残部が
鉄及び不可避的不純物よりなる素線径0.10〜0.50mmの素
線を２本撚り合わせて成るスチールコード。2. In weight%, C: 0.75 to 0.90, Si: 0.45 to 1.2
0, Mn: 0.30 to 0.90, Ni: 0.05 to 1.00, and Cu: 0.
A steel cord containing 10 to 0.50 and S: 0.01 to 0.04, and the remaining part consisting of iron and unavoidable impurities, and consisting of two strands each having a diameter of 0.10 to 0.50 mm.
を有する素線で以て２層撚りにしたスチールコードであ
って、芯ストランドを３本の素線、側ストランドを６本
の素線で形成し、かつ側素線の直径を芯素線の直径の1.
60〜1.80倍としたスチールコード。3. A steel cord in which two strands are twisted with a strand having the metal composition and strand diameter according to claim 1 or 2, wherein the core strand has three strands and the side strands have 6 strands. It is made of two strands, and the diameter of the side strands is 1.
Steel cord with 60 to 1.80 times.
を有する素線で以て２層撚りにしたスチールコードであ
って、芯を２本の素線、側を６〜７本の素線で形成し、
かつ芯素線と側素線直径を略同一にしたスチールコー
ド。4. A steel cord obtained by twisting two layers with an element wire having the metal composition and the element wire diameter according to claim 1 or 2, wherein the core has two element wires and the sides have 6 to 7 pieces. Formed from the strands of a book,
Also, a steel cord with the diameter of the core wire and that of the side wire being approximately the same.
を有する素線で以て２層撚りにしたスチールコードであ
って、芯ストランドを３本の素線、側ストランドを９本
の素線で形成し、かつ芯素線の直径を側素線の直径の略
1.05〜1.25倍としたスチールコード。5. A steel cord obtained by twisting two layers of an element wire having the metal composition and the element wire diameter according to claim 1 or 2, wherein three core wires and nine side strands are used as core strands. It is made of two strands, and the diameter of the core strand is approximately the diameter of the side strand.
Steel cord with 1.05 to 1.25 times.
を有する素線から成るスチールコードであって、２本の
素線を撚り合わせた撚線群と２本の素線を撚り合わせて
いない素線束とを上記撚線群と同一ピッチで撚り合わ
せ、かつ上記４本の素線径を略同一にしたスチールコー
ド。6. A steel cord comprising a wire having a metal composition and a wire diameter according to claim 1 or 2, comprising a twisted wire group formed by twisting two wires and two wires. A steel cord in which a bundle of unstranded strands is twisted at the same pitch as the above strand group, and the diameters of the four strands are substantially the same.
を有する素線で以て３層撚りにしたスチールコードであ
って、コアを２〜４本の素線、中間層を７〜９本の素
線、外層を12〜15本の素線で形成し、かつ中間層の各素
線の中心を結ぶ線上における各素線間の間隙の総和と、
外層の各素線の中心を結ぶ線上における各素線間の間隙
の総和を、上記各層の各素線の中心を結ぶ円周の長さの
５〜20％としたスチールコード。7. A steel cord obtained by twisting three layers of an element wire having the metal composition and the element wire diameter according to claim 1 or 2, wherein the core has 2 to 4 element wires and an intermediate layer. 7-9 strands, the outer layer is formed by 12-15 strands, and the total gap between the strands on the line connecting the centers of the strands of the intermediate layer,
A steel cord in which the total of the gaps between the individual wires on the line connecting the centers of the individual wires of the outer layer is 5 to 20% of the length of the circumference connecting the centers of the individual wires of the above layers.
のスチールコードをベルト部、カーカス部、チェーファ
部の少なくとも一部に有するタイヤ。8. A tire having the steel cord according to claim 1, 2, 3, 4, 5, 6 or 7 in at least a part of a belt portion, a carcass portion and a chafer portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63207961A JPH0718101B2 (en) | 1988-08-22 | 1988-08-22 | Steel cord and tire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63207961A JPH0718101B2 (en) | 1988-08-22 | 1988-08-22 | Steel cord and tire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0261187A JPH0261187A (en) | 1990-03-01 |
| JPH0718101B2 true JPH0718101B2 (en) | 1995-03-01 |
Family
ID=16548391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63207961A Expired - Lifetime JPH0718101B2 (en) | 1988-08-22 | 1988-08-22 | Steel cord and tire |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0718101B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1731661A4 (en) * | 2004-03-31 | 2008-03-05 | Tokusen Kogyo Company Ltd | Filament for reinforcing rubber excellent in corrosion resistance, and composite of the filament and rubber |
| US20090288747A1 (en) * | 2005-12-01 | 2009-11-26 | Sumitomo Rubber Industriesm, Ltd. | Metal Cord, Rubber-Cord Complex and Pneumatic Tire Using the Same |
| KR101331387B1 (en) | 2005-12-13 | 2013-11-20 | 스미토모 고무 고교 가부시키가이샤 | Metal cord, rubber-cord complex, and pneumatic tire using the same |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4817462U (en) * | 1971-07-14 | 1973-02-27 | ||
| JPS5274057A (en) * | 1975-12-11 | 1977-06-21 | Kanai Hiroyuki | Manufacture of steel cord |
| US3996733A (en) * | 1976-01-27 | 1976-12-14 | Uniroyal Inc. | Reinforcing cord construction |
| JPS5921370B2 (en) * | 1976-11-02 | 1984-05-19 | 新日本製鐵株式会社 | Manufacturing method for highly ductile and high tensile strength wire with excellent stress corrosion cracking resistance |
| FR2433989A1 (en) * | 1978-08-22 | 1980-03-21 | Sodetal | METAL CABLE AND MANUFACTURING METHOD |
| JPS5614396U (en) * | 1979-07-11 | 1981-02-06 | ||
| NL191315C (en) * | 1981-05-08 | 1995-05-16 | Bekaert Sa Nv | Cable for reinforcing elastomeric material and method for manufacturing such a cable. |
| JPS61177326A (en) * | 1985-01-31 | 1986-08-09 | Nippon Steel Corp | Manufacture of wire rod for wire having high strength as well as weatherability |
| JPS6218678A (en) * | 1985-03-15 | 1987-01-27 | Clarion Co Ltd | Error rate measuring instrument for pcm signal |
| JPS62141144A (en) * | 1985-12-06 | 1987-06-24 | 住友電気工業株式会社 | Steel cord |
| JPH0711060B2 (en) * | 1986-04-30 | 1995-02-08 | 新日本製鐵株式会社 | High-strength steel wire rod with excellent drawability |
| JPS63130404A (en) * | 1986-11-20 | 1988-06-02 | Toyo Tire & Rubber Co Ltd | Pneumatic tyre |
-
1988
- 1988-08-22 JP JP63207961A patent/JPH0718101B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0261187A (en) | 1990-03-01 |
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