JPS62288634A - Production of steel wire and steel cord for reinforcement of rubber article - Google Patents
Production of steel wire and steel cord for reinforcement of rubber articleInfo
- Publication number
- JPS62288634A JPS62288634A JP61132163A JP13216386A JPS62288634A JP S62288634 A JPS62288634 A JP S62288634A JP 61132163 A JP61132163 A JP 61132163A JP 13216386 A JP13216386 A JP 13216386A JP S62288634 A JPS62288634 A JP S62288634A
- Authority
- JP
- Japan
- Prior art keywords
- wire
- plating
- steel
- thickness
- wire drawing
- 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.)
- Granted
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 38
- 239000010959 steel Substances 0.000 title claims abstract description 38
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 230000002787 reinforcement Effects 0.000 title description 2
- 238000007747 plating Methods 0.000 claims abstract description 68
- 238000005491 wire drawing Methods 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 26
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 7
- 229910002058 ternary alloy Inorganic materials 0.000 claims abstract description 7
- 238000009499 grossing Methods 0.000 claims abstract description 6
- 229910052742 iron Inorganic materials 0.000 claims abstract description 5
- 229910052718 tin Inorganic materials 0.000 claims abstract description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 238000005498 polishing Methods 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 4
- 229910017052 cobalt Inorganic materials 0.000 claims description 4
- 239000010941 cobalt Substances 0.000 claims description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 4
- 239000011135 tin Substances 0.000 claims description 4
- 229910001297 Zn alloy Inorganic materials 0.000 claims 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract description 10
- 229910002056 binary alloy Inorganic materials 0.000 abstract description 8
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 abstract description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 abstract description 3
- 239000007864 aqueous solution Substances 0.000 abstract description 3
- 238000004140 cleaning Methods 0.000 abstract description 3
- 230000003746 surface roughness Effects 0.000 abstract description 3
- 229910017518 Cu Zn Inorganic materials 0.000 abstract 2
- 229910017752 Cu-Zn Inorganic materials 0.000 abstract 2
- 229910017943 Cu—Zn Inorganic materials 0.000 abstract 2
- 239000002253 acid Substances 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 7
- 229910052802 copper Inorganic materials 0.000 description 7
- 239000010949 copper Substances 0.000 description 7
- 238000007796 conventional method Methods 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000012467 final product Substances 0.000 description 3
- 239000012779 reinforcing material Substances 0.000 description 3
- 238000005275 alloying Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- 238000002203 pretreatment Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- JQJCSZOEVBFDKO-UHFFFAOYSA-N lead zinc Chemical compound [Zn].[Pb] JQJCSZOEVBFDKO-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000011160 research Methods 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
- D07B1/0666—Reinforcing cords for rubber or plastic articles the wires being characterised by an anti-corrosive or adhesion promoting coating
-
- 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
- D07B2205/3085—Alloys, i.e. non ferrous
- D07B2205/3089—Brass, i.e. copper (Cu) and zinc (Zn) alloys
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、タイヤ、ホース、コンベアベルトなどのゴ
ム物品補強用スチールワイヤーおよびスチールコードの
製造方法、詳しくは、ゴムとスチールワイヤーおよびス
チールコードとの接着性改善に有効な方法に関する。Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a method for manufacturing steel wire and steel cord for reinforcing rubber articles such as tires, hoses, and conveyor belts, and more particularly, to a method for manufacturing steel wire and steel cord for reinforcing rubber articles such as tires, hoses, and conveyor belts. This invention relates to an effective method for improving adhesion.
ゴムの中に各種の補強材を埋め込んでゴム製品の強度お
よび耐久性を向上させる技術は、広〈実施されている。Techniques for improving the strength and durability of rubber products by embedding various reinforcing materials in rubber are widely practiced.
なかでもゴムとスチール補強材の複合物は、自動車タイ
ヤ、高圧ゴムホース、コンベアベルトなどに応用され、
その要求品質性能も多岐にわたっているが、ゴムとスチ
ール補強材との接着性を改良して耐久性を向上させるこ
とは普遍的な要求である。Among them, composites of rubber and steel reinforcement are used in automobile tires, high-pressure rubber hoses, conveyor belts, etc.
Although the required quality and performance vary widely, it is a universal requirement to improve the adhesion between rubber and steel reinforcing material to increase durability.
特に、補強材として銅−亜鉛二元合金メンキしたスチー
ルコードを使用するスチールラジアルタイヤにおいては
、高速道路の発達に伴ってタイヤの高速耐久性および高
速安定性を高めることが強く要望されており、この要望
の達成のためにスチールコードとゴムとの接着性を改良
することが極めて重要な問題となっている。In particular, with the development of expressways, there is a strong desire to improve the high-speed durability and high-speed stability of steel radial tires that use steel cords coated with a copper-zinc binary alloy as a reinforcing material. In order to achieve this desire, improving the adhesion between the steel cord and rubber has become an extremely important issue.
この接着性に関しては、従来がらスチールワイヤーやス
チールコード並びにゴムの改良研究が行なわれ、ゴム製
品製造時における接着性、いわゆる初期接着性は改善さ
れつつあるが、実際に厳しい条件下で使用されると良好
な初期接着性が徐々に低下するという問題があり、充分
満足すべき状態になっていないのが現状である。Regarding this adhesion, research has been carried out to improve steel wire, steel cord, and rubber, and the adhesion during the manufacturing of rubber products, so-called initial adhesion, is improving, but it is difficult to actually use it under harsh conditions. There is a problem that good initial adhesion gradually decreases, and the current situation is that it is not in a fully satisfactory state.
例えばスチールラジアルタイヤでは、自動車に装着され
る前に多湿雰囲気中に長時間貯蔵されたり、あるいは自
動車に装着してからの使用でゴムに傷が生じて水分が浸
入することによって、スチールコードとゴムの接着性が
低下するいわゆる耐湿接着性が問題となっており、この
改善が切望されている。For example, steel radial tires may be stored in a humid atmosphere for a long time before being installed on a car, or when used after being installed on a car, the rubber may be scratched and moisture may infiltrate, causing the steel cord and rubber There is a problem with so-called moisture-resistant adhesion, which is a decrease in adhesive properties, and there is a strong desire to improve this problem.
従来のゴム物品用スチールワイヤーやスチールコードで
は、鋼線の上に銅−亜鉛二元合金メッキを施した後、伸
線さらには撚線したものが一般に使用されており、耐湿
接着性を向上させるために、銅−亜鉛二元合金メッキの
銅含有率を下げたり、あるいは銅−亜鉛にニッケル、コ
バルト、鉄、スズのいずれか一種類を加えた三元合金メ
ッキにしたり、あるいはメッキ層の厚さを小さくするこ
とが行なわれている。しかしながら、銅含有率を６２九
以下に下げるとβ相が析出してくるため伸線加工性が悪
くなり、線細りゃ断線等の伸線トラブルが起こり昌くな
る。従って、銅含有率は６２％程度が限界値になってい
る。一方、銅−亜鉛にニッケル、コバルト、鉄、スズの
いずれか一種類を加えた三元合金メッキの場合、熱拡散
による均一な合金化処理が必要であるが、メッキ層が厚
いと均一合金化に長時間を要し生産性が低下するため、
できるだけ薄くすることが望ましい、しかし、メッキ層
の厚さを小さくしすぎると伸線中でのメンキ剥離が多く
なり、初期接着性が低下するため・メッキ層の厚さは０
．２０μｍより大きくする必要がある。Conventional steel wires and steel cords for rubber products are generally made by plating the steel wire with a copper-zinc binary alloy, then drawing it and then twisting it to improve moisture-resistant adhesion. In order to achieve this, it is necessary to reduce the copper content of copper-zinc binary alloy plating, or to use ternary alloy plating in which one of nickel, cobalt, iron, or tin is added to copper-zinc, or to increase the thickness of the plating layer. Efforts are being made to reduce the size. However, when the copper content is lowered to 629 or less, the β phase precipitates, resulting in poor wire drawability, and wire drawing problems such as wire thinning and wire breakage occur. Therefore, the limit value for the copper content is about 62%. On the other hand, in the case of ternary alloy plating in which one of nickel, cobalt, iron, and tin is added to copper-zinc, uniform alloying treatment by thermal diffusion is required, but if the plating layer is thick, uniform alloying will occur. It takes a long time to complete the process, reducing productivity.
It is desirable to make the plating layer as thin as possible; however, if the thickness of the plating layer is too small, peeling of the coating during wire drawing will increase and the initial adhesion will decrease.・The thickness of the plating layer should be 0.
．． It is necessary to make it larger than 20 μm.
このような伸線中の問題があり、充分満足できる耐温熱
性を得るに至っていない。Due to such problems during wire drawing, it has not been possible to obtain sufficiently satisfactory temperature and heat resistance.
本発明者等は、メッキの厚さを小さくしたときに伸線中
でのメッキ箔１離が多くなる原因を解明するために、伸
線工程における各伸線ダイス毎に線材へのメッキ付着状
態を微視的に観察したところ、伸線前の線表面の平滑度
がメッキ付着状態に影響を及ぼしており、平滑度が悪い
と局部的なメッキ剥離現象を起こし易いことを見い出し
た。第１図は従来法におけるメッキ付着状態を横断面の
ＳＥＭ （ｓｃａｎｎｉｎｇ ｅｌｅｃｔｒｏｎ
＋５ｉｃｒｏｓｃｏｐｅ）観察で調べた例を示したもの
である。伸線前のメッキ下地である線材１の表面は、同
図の（ａ）に示すように極めて平滑度が悪く、これを、
伸線加工したものは、同図（ｂ）に示すように、表面凸
部のメッキ２が剥離している。The present inventors investigated the state of plating on the wire rod for each wire drawing die in the wire drawing process in order to elucidate the reason why the plating foil detachment increases during wire drawing when the plating thickness is reduced. Upon microscopic observation, it was found that the smoothness of the wire surface before wire drawing affects the state of plating adhesion, and that poor smoothness tends to cause local plating peeling. Figure 1 shows a cross-sectional SEM (scanning electron
This shows an example of observation using a +5 microscope. The surface of the wire rod 1, which is the plating base before wire drawing, has extremely poor smoothness as shown in (a) of the same figure.
In the wire-drawn wire-drawn wire, the plating 2 on the protrusions on the surface has peeled off, as shown in FIG. 2(b).
線材表面の平滑度の悪さ、つまり、大きな凹凸は、メッ
キ工程に至る前に既に生じていることも同時に判明した
が、従来、行われているメッキの前処理工程は、スケー
ル除去或いは表面の活性化のみを目的としており、面粗
さの改善には全く効果がなかったために、メッキの局部
剥離につながっていた訳である。It was also discovered that the poor smoothness of the wire surface, that is, large irregularities, had already occurred before the plating process, but the conventional plating pretreatment process was to remove scale or activate the surface. The purpose of this method was only to improve surface roughness, and it had no effect on improving surface roughness, leading to local peeling of the plating.
本発明者等は、上記の事情から伸線工程でのメッキ剥離
を抑制するには、メッキの前処理工程に、電解研磨によ
る線表面の平滑化処理を新たに付加することが有効であ
ると考え、それを実施した結果、メッキの厚さを小さく
しても、伸線中でのメッキ剥離が殆んどなく、初期接着
性を低下させずに耐湿接着性を向上させ得ることを見い
出し、この発明を完成するに至ったものである。Based on the above-mentioned circumstances, the present inventors believe that it is effective to add smoothing treatment of the wire surface by electropolishing to the plating pre-treatment step in order to suppress plating peeling during the wire drawing process. As a result of thinking about it and implementing it, we found that even if the plating thickness was reduced, there was almost no plating peeling during wire drawing, and it was possible to improve moisture-resistant adhesion without reducing the initial adhesion. This led to the completion of this invention.
すなわち、この発明の方法は、塩酸、硫酸等を用いた酸
洗あるいは電解洗滌で表面スケールを除去したのち、り
ん酸を主体として硫酸、またはクロム酸を混合した水溶
液等で電解研磨して、線表面の平均粗さを、好ましくは
１μｍ以下にする。That is, the method of this invention removes surface scale by pickling or electrolytic cleaning using hydrochloric acid, sulfuric acid, etc., and then electropolishing with an aqueous solution containing mainly phosphoric acid and sulfuric acid or chromic acid. The average roughness of the surface is preferably 1 μm or less.
その後、平滑化した線材の表面に、好ましくは最終製品
でのメッキ厚みが０．０５〜０．２０μｍに保たれる厚
さ、すなわち次式で表わされるメッキ層厚さとなるよう
に、銅−亜鉛二元合金メッキ、または銅−亜鉛にニッケ
ル、コバルト、鉄、スズのいずれか一種類を加えた三元
合金メッキを施す。After that, copper-zinc is applied to the surface of the smoothed wire so that the plating thickness in the final product is preferably maintained at 0.05 to 0.20 μm, that is, the plating layer thickness is expressed by the following formula. Binary alloy plating or ternary alloy plating consisting of copper-zinc plus one of nickel, cobalt, iron, and tin.
そして熱拡散、伸線工程を経て得られるスチールワイヤ
ー、さらにはこれらを撚線して得られるスチールコード
となすのがこの発明の方法である。According to the method of the present invention, a steel wire is obtained through thermal diffusion and a wire drawing process, and a steel cord is obtained by twisting these wires.
粗さ１μｍ以下が望ましいとした理由は、これより大き
いと所定の引張強度を得るため減面率８０％以上の伸線
加工を行なったとき、局部的なメッキ剥離現象を起こし
易くなり、メッキの厚さを０゜２０μｍ以下にすること
が難しくなるからである。The reason why a roughness of 1 μm or less is desirable is that if the roughness is larger than this, when wire drawing is performed with an area reduction rate of 80% or more to obtain a specified tensile strength, local plating peeling may occur easily, and the plating may deteriorate. This is because it becomes difficult to reduce the thickness to 0°20 μm or less.
また、伸線後のメッキの厚さを０．０５〜０．２０μｍ
に保つのが望ましい理由は、０．２０μｍより大きいと
、耐湿接着性の向上が殆んど見られず、一方０．０５μ
ｍより小さくなると、ゴムとの接着反応量が不足して初
期接着性が低下する０次にメッキ工程でのメッキ厚さを
規定する計算式（１）は、電解研磨で平滑化した線材表
面にメンキしたのち、伸線加工に伴うメッキ層厚さの変
化調査により得られたものである。In addition, the thickness of the plating after wire drawing is 0.05 to 0.20 μm.
The reason why it is desirable to keep it at
If it is smaller than m, the amount of adhesion reaction with the rubber will be insufficient and the initial adhesion will decrease.The calculation formula (1) that defines the plating thickness in the zero-order plating process is based on This was obtained by investigating changes in the thickness of the plating layer during wire drawing after the wire was peeled.
このようにメッキの前処理として、電解研磨による線表
面の平滑化処理を付加すると、メッキ後の伸線工程でメ
ッキの凹部への流れ込み等が減少して表面全体における
メッキの付着状態がより均一な状態で維持される。第２
図は本発明の方法におけるメッキ付着状態をＳＥＭ観察
で調べた例を示したものである。伸線加工後（同図のｂ
）も線材１の表面にメッキ２が伸線加工前（同図のａ）
と同様に均一に付着しており、第１図で示した従来法で
の局部的なメッキ剥離現象は観察されない。In this way, adding smoothing treatment to the wire surface by electrolytic polishing as a pre-treatment for plating reduces the flow of plating into the recesses during the wire drawing process after plating, resulting in more uniform plating adhesion over the entire surface. maintained in good condition. Second
The figure shows an example in which the state of plating adhesion in the method of the present invention was investigated by SEM observation. After wire drawing (b in the same figure)
) also has plating 2 on the surface of wire rod 1 before wire drawing (a in the same figure)
As in the case of the conventional method shown in FIG. 1, the local plating peeling phenomenon is not observed.
このため、メッキの厚さを小さくしても、従来法と違っ
て伸線中でのメンキ剥離がほとんどなく、初期接着性を
損わずに耐湿接着性を向上させることができる。Therefore, even if the plating thickness is reduced, unlike conventional methods, there is almost no peeling of the coating during wire drawing, and moisture-resistant adhesion can be improved without impairing initial adhesion.
以下に、この発明のより詳細な実施例を挙げる。More detailed examples of this invention are given below.
線径１．２５ｍの鋼線を用い、メッキ前処理工程で酸洗
による表面スケール除去後、りん酸と硫酸の混合水溶液
で電解研磨を行ない、線表面の平滑化処理を施した。し
かるのち、銅含有率６３％、メッキ層厚さ０．５８μｍ
とした鉛−亜鉛二元合金メ、７キ、並びに銅含有率６３
％、ニッケル含有率５．５％、メッキ層厚さ０．６３μ
ｍとした鉛−亜鉛−ニッケル三元合金メッキを行ない、
伸線加工により線径を０゜２５龍まで絞り、さらに得ら
れた素線を撚線機で撚り合わせてｌＸ５のスチールコー
ドを製造した。Using a steel wire with a wire diameter of 1.25 m, the wire surface was smoothed by electrolytic polishing with a mixed aqueous solution of phosphoric acid and sulfuric acid after surface scale was removed by pickling in the plating pretreatment process. After that, the copper content was 63% and the plating layer thickness was 0.58 μm.
lead-zinc binary alloys with a copper content of 63
%, nickel content 5.5%, plating layer thickness 0.63μ
Perform lead-zinc-nickel ternary alloy plating with m
The wire diameter was reduced to 0°25 mm by wire drawing, and the obtained wires were twisted together using a wire twisting machine to produce a 1×5 steel cord.
このＭ柊製品でのメッキ層厚さは、銅−亜鉛二元合金メ
ッキで０．１１．ｃ＋ｍ、ｍ−亜鉛−ニソケル三元合金
メッキで０．１２μｍであった。これらのスチールコー
ドについてゴムとの接着性を調べた。The plating layer thickness of this M Hiiragi product is 0.11. c+m, m-zinc-Nisochel ternary alloy plating with a thickness of 0.12 μm. The adhesion of these steel cords to rubber was investigated.
接着性の評価は、第１表に示す組成のゴムをスチールコ
ードの両側から貼り合わせ、１５０℃にて３０分間加硫
した後、初期接着性はそのままＴＩＩ離試験を行ない、
一方耐湿接着性は第２表に示す雰囲気に放置してから剥
１ｉｉＩ試験を行なってスチールコードのゴム被覆度に
より５．０満点法をもって評価した。Adhesion was evaluated by laminating rubber having the composition shown in Table 1 on both sides of a steel cord, vulcanizing it at 150°C for 30 minutes, and then performing a TII release test with the initial adhesion intact.
On the other hand, the moisture-resistant adhesion was evaluated using a 5.0-point scale based on the degree of rubber coverage of the steel cord by performing a peel test after being left in the atmosphere shown in Table 2.
なお、比較のため電解研磨による線表面の平滑化処理を
行ない、かつ最終製品での銅含有率６３％、メッキ層厚
さ０．２５μｍである銅−亜鉛二元合金メッキのｌＸ５
スチールコード、並びに電解研磨による線表面の平滑化
処理を行なわず、かつ最終製品での銅含有率６３％、メ
ッキ層厚さ０．２５μｍ（従来方）、または０．１１μ
ｍである銅−亜鉛二元合金メッキの１×５スチールコー
ドについても接着性を調べた。For comparison, the wire surface was smoothed by electrolytic polishing, and the final product had a copper-zinc binary alloy plating with a copper content of 63% and a plating layer thickness of 0.25 μm.
The steel cord and the wire surface are not smoothed by electrolytic polishing, and the final product has a copper content of 63% and a plating layer thickness of 0.25 μm (conventional method) or 0.11 μm.
Adhesion was also investigated for a 1×5 steel cord plated with a copper-zinc binary alloy.
第２表に結果を示す。この表から、本発明の方法による
スチールコードは、従来法に比べて初期接着性もやや改
善されるが、特に耐湿接着性が大幅に向上していること
がわかる。Table 2 shows the results. From this table, it can be seen that the steel cord produced by the method of the present invention has slightly improved initial adhesion compared to the conventional method, but particularly has significantly improved moisture-resistant adhesion.
第１表
第 ２ 表
〔発明の効果〕
この発明によれば、メッキを施す前に電解研磨による線
表面の平滑化処理を施すことにより、伸線工程でのメッ
キ剥離を抑制したので、メンキの厚さを小さくすること
が可能となり、この結果、ズチールワイヤーおよびスチ
ールコードのゴムに対する耐湿接着性を大輪に改善でき
ると云う効果が得られ、ゴム物品の信鎖性、耐久性向上
に大きく寄与できる。Table 1 Table 2 [Effects of the Invention] According to the present invention, by smoothing the wire surface by electrolytic polishing before plating, peeling of the plating during the wire drawing process is suppressed. It is possible to reduce the thickness, and as a result, the moisture-resistant adhesion of steel wire and steel cord to rubber can be greatly improved, which greatly contributes to improving the reliability and durability of rubber products. can.
第１図は、従来法によるメッキ付着状態を調べたＳＥＭ
観察結果を、第２図は本発明によるメッキ付着状態を調
べたＳＥＭ観察結果を示す図であって、いずれも（ａ）
は伸線前の、（ｂ）は減面率３０％で伸線した後の表面
状態である。
１・・・・・・線材、２・・・・・・メッキ。Figure 1 is an SEM showing the state of plating adhesion using the conventional method.
FIG. 2 shows the results of SEM observation of the state of plating adhesion according to the present invention, both of which are (a)
(b) shows the surface state before wire drawing, and (b) shows the surface state after wire drawing with an area reduction rate of 30%. 1...Wire rod, 2...Plating.
Claims (3)
材表面を平滑化する工程と、平滑化した線材表面に銅−
亜鉛二元合金メッキ、または銅−亜鉛にニッケル、コバ
ルト、鉄、スズのいずれか一種類を加えた三元合金メッ
キを施す工程が含まれていることを特徴とするゴム物品
補強用スチールワイヤーおよびスチールコードの製造方
法。(1) During the pretreatment process of wire drawing, there is a process of smoothing the wire surface by electrolytic polishing, and a process of smoothing the surface of the wire by electropolishing.
Steel wire for reinforcing rubber articles, characterized by including a step of plating with binary zinc alloy or ternary alloy plating of copper-zinc with one of nickel, cobalt, iron, and tin; and Method of manufacturing steel cord.
１μｍ以下にすることを特徴とする特許請求の範囲第（
１）項記載のゴム物品補強用スチールワイヤーおよびス
チールコードの製造方法。(2) The smoothness of the line surface by the electrolytic polishing is reduced to an average roughness of 1 μm or less (
1) The method for producing steel wire and steel cord for reinforcing rubber articles as described in item 1).
さが０．０５〜０．２０μｍになるように次式で表わさ
れるメッキ層厚さにすることを特徴とする特許請求の範
囲第（１）項又は第（２）項記載のゴム物品補強用スチ
ールワイヤーおよびスチールコードの製造方法。 メッキ工程でのメッキ層厚さ（μｍ） ＝０．０５〜０．２０×（素線の直径／伸線後の直径）
／［（伸線後の直径／素線の直径）×０．０６＋０．９
４］(3) The amount of plating in the plating process is set to a plating layer thickness expressed by the following formula so that the plating layer thickness after wire drawing is 0.05 to 0.20 μm. A method for producing steel wire and steel cord for reinforcing rubber articles according to item (1) or item (2). Plating layer thickness in plating process (μm) = 0.05 to 0.20 x (diameter of strand/diameter after wire drawing)
/[(diameter after wire drawing/diameter of strand)×0.06+0.9
4]
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61132163A JP2645457B2 (en) | 1986-06-05 | 1986-06-05 | Method of manufacturing steel wire and steel cord for reinforcing rubber articles |
| US07/053,669 US4859289A (en) | 1986-05-26 | 1987-05-26 | Process for producing a metal wire useful as rubber product reinforcement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61132163A JP2645457B2 (en) | 1986-06-05 | 1986-06-05 | Method of manufacturing steel wire and steel cord for reinforcing rubber articles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62288634A true JPS62288634A (en) | 1987-12-15 |
| JP2645457B2 JP2645457B2 (en) | 1997-08-25 |
Family
ID=15074837
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61132163A Expired - Lifetime JP2645457B2 (en) | 1986-05-26 | 1986-06-05 | Method of manufacturing steel wire and steel cord for reinforcing rubber articles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2645457B2 (en) |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01201592A (en) * | 1987-10-15 | 1989-08-14 | Bridgestone Bekaruto Steel Koode Kk | High-strength steel wire and steel cord for reinforcement of rubber product |
| JPH03501631A (en) * | 1988-07-19 | 1991-04-11 | エヌ・ブイ，ベカルト・エス・エー | Steel wire for elastomer reinforcement |
| JPH05195458A (en) * | 1992-01-17 | 1993-08-03 | Tokyo Seiko Co Ltd | Plated wire for steel cord |
| JPH0649783A (en) * | 1992-07-21 | 1994-02-22 | Bridgestone Bekaert Steel Code Kk | Steel wire for reinforcing rubber good, excellent in adhesion to rubber |
| JPH06255313A (en) * | 1993-03-09 | 1994-09-13 | Yokohama Rubber Co Ltd:The | Pneumatic radial tire |
| JPH06255312A (en) * | 1993-03-09 | 1994-09-13 | Yokohama Rubber Co Ltd:The | Pneumatic radial tire |
| JPH07268787A (en) * | 1994-03-25 | 1995-10-17 | Nippon Steel Corp | Highly strong steel wire excellent in fatigue characteristic and steel cord using the steel wire and rubber product using the steel wire or the steel cord |
| JPH08209388A (en) * | 1995-02-07 | 1996-08-13 | Nippon Steel Corp | Brass plated steel wire having good adhesiveness to rubber |
| JPH08253004A (en) * | 1994-12-14 | 1996-10-01 | Bridgestone Corp | Highly endurable pneumatic steel radial tire |
| JPH09150464A (en) * | 1995-11-30 | 1997-06-10 | Tokai Rubber Ind Ltd | High pressure hose and its manufacture |
| JPH09188982A (en) * | 1996-01-10 | 1997-07-22 | Tokyo Seiko Co Ltd | Production of element wire for steel cord |
| EP1967645A1 (en) * | 2005-12-01 | 2008-09-10 | Sumitomo Rubber Industries, Ltd. | Metallic cord, rubber/cord composite object, and pneumatic tire obtained using the same |
| EP1975309A1 (en) * | 2005-12-13 | 2008-10-01 | Sumitomo Rubber Industries, Ltd. | Metallic cord, rubber/cord composite object, and pneumatic tire obtained using the same |
| JP2009078808A (en) * | 2000-11-09 | 2009-04-16 | Bridgestone Corp | Tire |
| US9324472B2 (en) | 2010-12-29 | 2016-04-26 | Syscom Advanced Materials, Inc. | Metal and metallized fiber hybrid wire |
| US9951469B2 (en) | 2012-07-24 | 2018-04-24 | Nv Bekaert Sa | Steel cord for rubber reinforcement |
| JP2018119189A (en) * | 2017-01-26 | 2018-08-02 | 新日鐵住金株式会社 | Plated steel wire, steel cord and rubber-steel cord complex |
| US10358769B2 (en) | 2012-02-06 | 2019-07-23 | Nv Bekaert Sa | Ternary or quaternary alloy coating for steam ageing and cured humidity adhesion elongated steel element comprising a ternary or quaternary brass alloy coating and corresponding method |
| JP2020033631A (en) * | 2018-08-31 | 2020-03-05 | パナソニックＩｐマネジメント株式会社 | Tungsten wire and elastic member |
| US10619271B2 (en) | 2012-02-06 | 2020-04-14 | Nv Bekaert Sa | Process for manufacturing an elongated steel element to reinforce rubber products |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62278300A (en) * | 1986-05-26 | 1987-12-03 | Sumitomo Electric Ind Ltd | Production of steel wire and steel cord for reinforcing rubber product |
-
1986
- 1986-06-05 JP JP61132163A patent/JP2645457B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62278300A (en) * | 1986-05-26 | 1987-12-03 | Sumitomo Electric Ind Ltd | Production of steel wire and steel cord for reinforcing rubber product |
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01201592A (en) * | 1987-10-15 | 1989-08-14 | Bridgestone Bekaruto Steel Koode Kk | High-strength steel wire and steel cord for reinforcement of rubber product |
| JPH03501631A (en) * | 1988-07-19 | 1991-04-11 | エヌ・ブイ，ベカルト・エス・エー | Steel wire for elastomer reinforcement |
| JPH05195458A (en) * | 1992-01-17 | 1993-08-03 | Tokyo Seiko Co Ltd | Plated wire for steel cord |
| JPH0649783A (en) * | 1992-07-21 | 1994-02-22 | Bridgestone Bekaert Steel Code Kk | Steel wire for reinforcing rubber good, excellent in adhesion to rubber |
| JPH06255313A (en) * | 1993-03-09 | 1994-09-13 | Yokohama Rubber Co Ltd:The | Pneumatic radial tire |
| JPH06255312A (en) * | 1993-03-09 | 1994-09-13 | Yokohama Rubber Co Ltd:The | Pneumatic radial tire |
| JPH07268787A (en) * | 1994-03-25 | 1995-10-17 | Nippon Steel Corp | Highly strong steel wire excellent in fatigue characteristic and steel cord using the steel wire and rubber product using the steel wire or the steel cord |
| JPH08253004A (en) * | 1994-12-14 | 1996-10-01 | Bridgestone Corp | Highly endurable pneumatic steel radial tire |
| JPH08209388A (en) * | 1995-02-07 | 1996-08-13 | Nippon Steel Corp | Brass plated steel wire having good adhesiveness to rubber |
| JPH09150464A (en) * | 1995-11-30 | 1997-06-10 | Tokai Rubber Ind Ltd | High pressure hose and its manufacture |
| JPH09188982A (en) * | 1996-01-10 | 1997-07-22 | Tokyo Seiko Co Ltd | Production of element wire for steel cord |
| JP2009078808A (en) * | 2000-11-09 | 2009-04-16 | Bridgestone Corp | Tire |
| EP1967645A1 (en) * | 2005-12-01 | 2008-09-10 | Sumitomo Rubber Industries, Ltd. | Metallic cord, rubber/cord composite object, and pneumatic tire obtained using the same |
| US8833419B2 (en) | 2005-12-01 | 2014-09-16 | Sumitomo Rubber Industries, Ltd. | Metal cord, rubber-cord complex and pneumatic tire using the same |
| EP1967645A4 (en) * | 2005-12-01 | 2010-03-10 | Sumitomo Rubber Ind | Metallic cord, rubber/cord composite object, and pneumatic tire obtained using the same |
| EP1975309A1 (en) * | 2005-12-13 | 2008-10-01 | Sumitomo Rubber Industries, Ltd. | Metallic cord, rubber/cord composite object, and pneumatic tire obtained using the same |
| EP1975309A4 (en) * | 2005-12-13 | 2010-03-10 | Sumitomo Rubber Ind | Metallic cord, rubber/cord composite object, and pneumatic tire obtained using the same |
| US8833420B2 (en) | 2005-12-13 | 2014-09-16 | Sumitomo Rubber Industries, Ltd. | Metal cord, rubber-cord complex and pneumatic tire using the same |
| US9324472B2 (en) | 2010-12-29 | 2016-04-26 | Syscom Advanced Materials, Inc. | Metal and metallized fiber hybrid wire |
| US10358769B2 (en) | 2012-02-06 | 2019-07-23 | Nv Bekaert Sa | Ternary or quaternary alloy coating for steam ageing and cured humidity adhesion elongated steel element comprising a ternary or quaternary brass alloy coating and corresponding method |
| US10619271B2 (en) | 2012-02-06 | 2020-04-14 | Nv Bekaert Sa | Process for manufacturing an elongated steel element to reinforce rubber products |
| US9951469B2 (en) | 2012-07-24 | 2018-04-24 | Nv Bekaert Sa | Steel cord for rubber reinforcement |
| JP2018119189A (en) * | 2017-01-26 | 2018-08-02 | 新日鐵住金株式会社 | Plated steel wire, steel cord and rubber-steel cord complex |
| JP2020033631A (en) * | 2018-08-31 | 2020-03-05 | パナソニックＩｐマネジメント株式会社 | Tungsten wire and elastic member |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2645457B2 (en) | 1997-08-25 |
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