JPS62278300A - Production of steel wire and steel cord for reinforcing rubber product - Google Patents
Production of steel wire and steel cord for reinforcing rubber productInfo
- Publication number
- JPS62278300A JPS62278300A JP12167686A JP12167686A JPS62278300A JP S62278300 A JPS62278300 A JP S62278300A JP 12167686 A JP12167686 A JP 12167686A JP 12167686 A JP12167686 A JP 12167686A JP S62278300 A JPS62278300 A JP S62278300A
- Authority
- JP
- Japan
- Prior art keywords
- wire
- plating
- steel
- steel cord
- adhesion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 title claims description 34
- 239000010959 steel Substances 0.000 title claims description 34
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 230000003014 reinforcing effect Effects 0.000 title claims description 4
- 238000007747 plating Methods 0.000 claims description 31
- 238000000034 method Methods 0.000 claims description 24
- 238000005491 wire drawing Methods 0.000 claims description 18
- 229910002056 binary alloy Inorganic materials 0.000 claims description 6
- 238000005498 polishing Methods 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 5
- 238000009499 grossing Methods 0.000 claims description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000011701 zinc Substances 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000012779 reinforcing material Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- 238000002203 pretreatment Methods 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 241001164374 Calyx Species 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000003205 fragrance 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
- 238000011835 investigation Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000012360 testing method 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
- D07B2205/3071—Zinc (Zn)
-
- 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
-
- 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
- D07B2205/3092—Zinc (Zn) and tin (Sn) alloys
Landscapes
- Wire Processing (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
３、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 3. Detailed Description of the Invention [Field of Industrial Application] This 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 This invention relates to an effective method for improving adhesion between steel wire and steel cord.
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 into 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 improve 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
、真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
することが掻めて重要な問題となっている。In particular, with the development of high-speed roads, 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、従来か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ている。Regarding this adhesive property, research has been carried out to improve steel wire, steel cord, and rubber.
スチールワイヤーおよびスチールコードの側では、メッ
キ組成やメッキ量の改良と共に、前処理、メッキ、拡散
、伸線、撚線の各工程での製造管理の改善により接着性
向上の努力がなされているが、まだ完全とはいえない。On the steel wire and steel cord side, efforts are being made to improve adhesion by improving the plating composition and amount, as well as improving manufacturing control in each process of pretreatment, plating, diffusion, wire drawing, and stranding. , it's still not perfect.
特に、素線の伸線工程では、減面率８０％以上の伸線加
工が行なわれているため、局部的にメッキが剥離する現
象があり、これが接着性低下の大きな要因になっている
。これについては、従来から、伸線ダイスの形状やダイ
ス系列、あるいは伸線潤滑剤の改善について検討されて
きたが、完全に解決するに至っていない。In particular, in the wire drawing process, the wire is drawn with an area reduction rate of 80% or more, so there is a phenomenon in which the plating peels off locally, which is a major factor in the deterioration of adhesion. Regarding this problem, studies have been made to improve the shape of the wire drawing die, the die series, or the wire drawing lubricant, but a complete solution has not yet been reached.
本発明者等は、スチールワイヤーおよびスチールコード
のゴムとの接着性を向上させることを目的として、素線
の伸線工程における局部的なメッキ剥離現象の原因を探
り、それをつきとめて、この発明を完成するに至ったの
である。即ち、上述の原因をつきとめるため、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
キの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。In order to improve the adhesion of steel wire and steel cord to rubber, the present inventors investigated the cause of local plating peeling phenomenon in the wire drawing process, identified it, and created the present invention. We have now completed the process. In other words, in order to identify the above-mentioned cause, we microscopically observed the state of plating on the wire for each wire drawing die during the wire drawing process, and found that the smoothness of the wire surface before wire drawing affected the state of plating adhesion. It has been found that poor smoothness tends to cause local plating peeling.
第１図は従来法におけるメッキ付着状態を横断面のＳ
Ｅ Ｍ （ｓｃａｎｎｉｎｇ ｅｌｅｃｔｒｏｎ
ｍ１ｃ−ｒｏｓｃｏｐｅ）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（ｂｌに示すように、表面凸
部のメッキ２が局部的にヱＩＩ離している。Figure 1 shows the state of plating adhesion in the conventional method.
EM (scanning electron)
This figure shows an example of observation using a m1c-roscope. 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, as shown in FIG.
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、それを実施したところ期待した通りの結果が
得られた。この発明は、この結果に基いて完成された製
造方法である。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. When I thought about it and implemented it, I got the results I expected. This invention is a manufacturing method completed based on this result.
すなわち、具体的には、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。その後、平滑化した線材の表面に、銅、銅
系二元合金、亜鉛、亜鉛系二元合金のいずれかの金属メ
ッキを施し、伸線してスチールワイヤーとし、また、こ
のスチールワイヤーを燃線してスチールコードとなすの
がこの発明の方法である。Specifically, after removing surface scale by pickling or electrolytic cleaning using hydrochloric acid, sulfuric acid, etc., the wire surface is polished by electropolishing with an aqueous solution containing mainly phosphoric acid and sulfuric acid or chromic acid. The average roughness of
Do the following. After that, the surface of the smoothed wire is plated with copper, copper-based binary alloy, zinc, or zinc-based binary alloy, and drawn to make steel wire. The method of this invention is to make a steel cord.
なお、線表面の平均粗さを１μｍ以下が好ましいとした
のは、これより大きいと減面率８０％以上の伸線加工を
行なったとき、局部的なメッキの剥離現象が起き易くな
り、発明の効果が薄れるためである。The reason why the average roughness of the wire surface is preferably 1 μm or less is because if it is larger than this, local peeling of the plating is likely to occur when the wire is drawn with an area reduction rate of 80% or more. This is because the effect of
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
０表面にメンキ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。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, making the adhesion of plating more uniform over the entire surface. maintained. FIG. 2 shows an example in which the state of plating adhesion in the method of the present invention was investigated by SEM observation. Wire rod 1 is also used after wire drawing (b in the same figure)
The coating 2 was uniformly adhered to the surface of the wire as before the wire drawing process (a in the same figure), and the local plating peeling phenomenon in the conventional method shown in FIG. 1 was not observed.
従って、本発明法で製造されたスチールワイヤーおよび
スチールコードはメッキの付着状態が良好であり、ゴム
との接着性が向上する。Therefore, the steel wire and steel cord produced by the method of the present invention have good plating adhesion and improved adhesion to rubber.
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、Ｃｕ含有率６３％、メッキ付着量５．５ｇ／
ｋｇとした銅−亜鉛二元合金メッキを行ない、伸線加工
により素線径を直径０．２５ｗまで絞り、さらに、得ら
れた素線を１２！ｖＡ機で撚り合わせて１×５のスチー
ルコードを製造した。このスチールコードについてゴム
との接着性を調べた。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, Cu content was 63% and plating amount was 5.5g/
kg of copper-zinc binary alloy plating, the diameter of the wire was reduced to 0.25W by wire drawing, and the obtained wire was further reduced to 12!kg. A 1×5 steel cord was manufactured by twisting it together using a vA machine. The adhesion of this steel cord 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、剥離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 pasting rubber with 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 peel test to give a score of 5.0 based on the degree of rubber coverage of the steel cord. It was evaluated according to the law.
なお、比較のため電解研磨による線表面の平滑化処理を
行なわなかった点を除いて全く同一の方法で得られた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 not smoothed by electrolytic polishing, but was obtained using the same method.
The adhesion of ×5 steel cord was also investigated.
第３図に結果を示す。この図から、本発明の方法による
スチールコードは、従来法によるスチールコードに比べ
て接着性が優れていることがわかる。The results are shown in Figure 3. From this figure, it can be seen that the steel cord produced by the method of the present invention has superior adhesiveness compared to the steel cord produced by the conventional method.
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、素線の伸線工程で
の局部的なメッキの剥離現象を抑制したので、補強用ス
チールワイヤーおよびスチールコードのゴムとの接着性
が向上し、被補強ゴム物品の信転性向上に大きく寄与で
きる。According to this invention, by smoothing the wire surface by electrolytic polishing before plating, local peeling of the plating during the wire drawing process is suppressed. The adhesion of the steel cord to the rubber is improved and can greatly contribute to improving the reliability of the reinforced rubber article.
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、（ａ）はいずれも伸線
前の、（ｂ）は減面率３０％で伸線した後の表面状態で
ある。
また、第３図は接着性の調査結果を示す比較回である。
１・・・・・・線材、２・・・・・・メッキ。
特許出願人 住友電気工業株式会社
同 代理人 鎌 １） 文 二
鎖香ぐ繁０吊−へ＝−０
萼Ｓ具Figure 1 is an SEM showing the state of plating adhesion using the conventional method.
Figure 2 shows the SEM observation results of the state of plating adhesion according to the present invention. (a) is before wire drawing, and (b) is after wire drawing with an area reduction rate of 30%. surface condition. Moreover, FIG. 3 is a comparison showing the results of an investigation on adhesion. 1...Wire rod, 2...Plating. Patent applicant: Sumitomo Electric Industries, Ltd. Agent: Sickle 1) Text: Two-stranded fragrance Shigeru 0 hanging-he =-0 Calyx S tool
Claims (2)
材表面を平滑化する工程と、平滑化した線材表面に銅、
銅系二元合金、亜鉛、亜鉛系二元合金のいずれかの金属
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 step of smoothing the surface of the wire with copper.
A method for producing steel wire and steel cord for reinforcing rubber articles, the method comprising the step of plating with any one of a copper-based binary alloy, zinc, and a zinc-based binary alloy.
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).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12167686A JPS62278300A (en) | 1986-05-26 | 1986-05-26 | Production of steel wire and steel cord for reinforcing rubber product |
| 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 |
|---|---|---|---|
| JP12167686A JPS62278300A (en) | 1986-05-26 | 1986-05-26 | Production of steel wire and steel cord for reinforcing rubber product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62278300A true JPS62278300A (en) | 1987-12-03 |
Family
ID=14817123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12167686A Pending JPS62278300A (en) | 1986-05-26 | 1986-05-26 | Production of steel wire and steel cord for reinforcing rubber product |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62278300A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62288634A (en) * | 1986-06-05 | 1987-12-15 | Sumitomo Electric Ind Ltd | Production of steel wire and steel cord for reinforcement of rubber article |
| JPH08209388A (en) * | 1995-02-07 | 1996-08-13 | Nippon Steel Corp | Brass-plated steel wire with good adhesion to rubber |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5686639A (en) * | 1979-11-23 | 1981-07-14 | Sodetal | Manufacture of wire for strengthening rubber article and device used for said method |
-
1986
- 1986-05-26 JP JP12167686A patent/JPS62278300A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5686639A (en) * | 1979-11-23 | 1981-07-14 | Sodetal | Manufacture of wire for strengthening rubber article and device used for said method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62288634A (en) * | 1986-06-05 | 1987-12-15 | Sumitomo Electric Ind Ltd | Production of steel wire and steel cord for reinforcement of rubber article |
| JPH08209388A (en) * | 1995-02-07 | 1996-08-13 | Nippon Steel Corp | Brass-plated steel wire with good adhesion to rubber |
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