JPH0513724B2 - - Google Patents

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Publication number
JPH0513724B2
JPH0513724B2 JP29806087A JP29806087A JPH0513724B2 JP H0513724 B2 JPH0513724 B2 JP H0513724B2 JP 29806087 A JP29806087 A JP 29806087A JP 29806087 A JP29806087 A JP 29806087A JP H0513724 B2 JPH0513724 B2 JP H0513724B2
Authority
JP
Japan
Prior art keywords
titanium
rolling
titanium material
cold rolling
copper
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
Application number
JP29806087A
Other languages
Japanese (ja)
Other versions
JPH01138005A (en
Inventor
Hiroshi Kuwamoto
Masaharu Jitsukawa
Yoichi Koga
Shosei Kamata
Sadakazu Masuda
Sakae Sonoda
Koji Kanjo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Engineering Corp
Original Assignee
Nippon Kokan Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nippon Kokan Ltd filed Critical Nippon Kokan Ltd
Priority to JP29806087A priority Critical patent/JPH01138005A/en
Publication of JPH01138005A publication Critical patent/JPH01138005A/en
Publication of JPH0513724B2 publication Critical patent/JPH0513724B2/ja
Granted legal-status Critical Current

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Description

【発明の詳細な説明】 (産業上の利用分野) 本発明はチタン材の冷間圧延方法に関し、かつ
特に経済性に優れかつ生産性の高いチタン材、特
にチタン板やチタン箔を得るための冷間圧延方法
に関する。
Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a method for cold rolling titanium materials, and particularly for obtaining titanium materials with excellent economic efficiency and high productivity, especially titanium plates and titanium foils. Relating to a cold rolling method.

(従来の技術) チタン材、特にチタン板の冷間圧延は、通常、
ステンレス鋼板の冷間圧延設備、即ちゼンジマー
ミルと言われる小径多段ロールの圧延機によつて
行われており、圧延潤滑剤として鉱油を主成分と
した低鹸化値のものがニート油又は水分散型のエ
マルジヨンで用いられている。
(Prior art) Cold rolling of titanium materials, especially titanium plates, is usually carried out by
Cold rolling of stainless steel sheets is carried out using a small-diameter multi-roll rolling mill called a Sendzimer mill, and rolling lubricants with low saponification values that are mainly composed of mineral oil or water-dispersed oil are used as the rolling lubricant. Used in emulsions.

チタン板の圧延にゼンジマーミルが用いられる
理由は、チタンの加工硬化特性がステンレス鋼の
それに類似していることと、チタン板が圧延時に
ワークロールに極めてビルドアツプ(焼付き)し
易い性質を有し、このビルドアツプが生じると摩
擦係数が大幅に上がるために、一般に鋼の圧延に
用いられる大径ロールのタンデムミルやリバース
ミルでチタン板を冷間圧延することが不可能であ
ることとにある。
The reason why Sendzimer mills are used to roll titanium plates is that the work hardening properties of titanium are similar to those of stainless steel, and titanium plates are extremely prone to build-up (seizure) on work rolls during rolling. When this build-up occurs, the coefficient of friction increases significantly, making it impossible to cold-roll a titanium plate using a tandem mill or reverse mill with large diameter rolls that are generally used for rolling steel.

しかしながら、チタン板をゼンジマーミルで冷
間圧延する場合でも、チタン板のワークロールへ
のビルドアツプし易い性質のため、1ロールパス
当りの圧下率を高く設定することが困難であり、
またチタン板を比較的低い圧下率で圧延する場合
でも、高速度圧延が不可能であり、このためチタ
ン板の冷間圧延は、ゼンジマーミルで行う場合で
も、1ロールパス当り15%以下及び圧延速度100
m/min以下の条件で行われなければならず、ス
テンレス鋼の圧延の場合に較べて著しく生産性が
低く、特仕上げ厚さが0.1mm以下の極めて薄いチ
タン板、即ちチタン箔を圧延によつて得る場合に
は膨大な工数を必要とする。
However, even when a titanium plate is cold rolled in a Sendzimer mill, it is difficult to set a high rolling reduction rate per roll pass because the titanium plate is easily built up onto work rolls.
Furthermore, even when rolling a titanium plate at a relatively low rolling reduction rate, high-speed rolling is not possible.For this reason, even when cold rolling a titanium plate in a Sendzimer mill, the rolling speed is 15% or less per roll pass and the rolling speed is 100%.
m/min or less, and the productivity is significantly lower than that of stainless steel rolling. It takes a huge amount of man-hours to obtain this.

これらの問題に対処するために、(1)チタン板を
加熱してその表面に薄い酸化膜を形成し、チタン
板のワークロールへのビルドアツプを防止する方
法、(2)圧延潤滑剤の鹸化値を高くする方法、(3)圧
延潤滑剤にグラフアイト等の固体潤滑剤を分散さ
せる方法等が提案されている。しかしながら、上
記(1)の方法は酸化膜の延びに対する追随性が悪
く、高い圧下率の圧延に耐えることができず、ま
た(2)及び(3)の方法はビルドアツプを防止する効果
が低く、このためいずれの方法も実用化に至つて
いない。
To address these issues, we have proposed (1) a method of heating the titanium plate to form a thin oxide film on its surface to prevent the titanium plate from building up on the work roll, and (2) the saponification value of the rolling lubricant. (3) A method of dispersing a solid lubricant such as graphite in the rolling lubricant has been proposed. However, method (1) has poor ability to follow the elongation of the oxide film and cannot withstand rolling with a high reduction ratio, and methods (2) and (3) are less effective in preventing build-up. For this reason, neither method has been put into practical use.

(発明が解決しようとする問題点) そこで、本発明は、上記した従来の技術の問題
点を解決するためになされたものであり、チタン
材の冷間圧延においてワークロールへのチタン材
のビルドアツプを防止し、摩擦係数を大幅に低減
し、優れた潤滑性を発揮するチタン材の冷間圧延
方法を提供することを目的とする。
(Problems to be Solved by the Invention) Therefore, the present invention has been made to solve the above-mentioned problems of the conventional technology. The purpose of the present invention is to provide a method for cold rolling titanium material, which prevents the friction, significantly reduces the coefficient of friction, and exhibits excellent lubricity.

(問題点を解決するための手段) 即ち、本発明によるチタン材の冷間圧延方法
は、圧延されるチタン材の表面に銅メツキを施し
てチタン材の表面に厚さ0.5〜3μmの範囲の銅皮
膜を形成する段階と、銅皮膜を形成したチタン材
を潤滑剤の存在下で冷間圧延する段階とを有す
る。
(Means for Solving the Problems) That is, in the method for cold rolling titanium material according to the present invention, copper plating is applied to the surface of the titanium material to be rolled so that the surface of the titanium material has a thickness in the range of 0.5 to 3 μm. The method includes a step of forming a copper film and a step of cold rolling the titanium material on which the copper film is formed in the presence of a lubricant.

チタン材の表面に銅皮膜を形成する段階で行わ
れる銅メツキには、いろいろなメツキ方法を適用
することができるが、チタン母材への密着性の良
い銅皮膜を得るためには電気銅メツキ法が好まし
く、特にマーシヤル法と言われている電気銅メツ
キ法が適している。このマーシヤル法によれば、
(a)まず圧延しようとするチタン板等のチタン材の
表面を軽石、エメリー研磨紙、バフ等の研磨材を
用いて研磨する工程、(b)次にチタン材表面を水酸
化ナトリウム、オルソ珪酸ソーダ等の強アルカリ
液の洗浄液で洗浄する工程、(c)次にチタン材を水
洗する工程、(d)次にチタン材表面を塩化白金酸を
少量添加した濃塩酸のエツチング液でエツチング
する工程、(e)その後直ちにチタン材表面を酒石酸
カリウムナトリウム液の洗浄液で洗浄する工程、
(f)次にチタン材表面を硫酸銅、酒石酸カリウムナ
トリウム及び水酸化ナトリウムのメツキ溶液中で
低電流密度で電気銅メツキする工程、(g)この電気
銅メツキしたチタン材を水洗する工程を経て、チ
タン材表面に銅メツキ皮膜を形成する。この場
合、銅メツキ皮膜の厚さは一般的には約0.5〜3μ
mの範囲に調節されることが好ましく、0.5μmよ
り小さいと苛酷な塑性変形の延びに対して追随性
が不足し、また3μmより大きくしてもそれ以上
の効果は得られず、不経済である。
Various plating methods can be applied to copper plating, which is performed at the stage of forming a copper film on the surface of titanium material, but in order to obtain a copper film with good adhesion to the titanium base material, electrolytic copper plating is used. The electrolytic copper plating method, which is called the Marshall method, is particularly suitable. According to this Marshall law,
(a) First, the surface of the titanium material such as a titanium plate to be rolled is polished using an abrasive such as pumice, emery abrasive paper, or buffing. (b) Next, the surface of the titanium material is polished using sodium hydroxide or orthosilicate. A step of cleaning with a strong alkaline cleaning solution such as soda, (c) a step of washing the titanium material with water, and (d) a step of etching the surface of the titanium material with an etching solution of concentrated hydrochloric acid to which a small amount of chloroplatinic acid has been added. , (e) Immediately thereafter cleaning the surface of the titanium material with a cleaning solution of potassium sodium tartrate solution,
(f) Next, the surface of the titanium material is electroplated with copper at a low current density in a plating solution of copper sulfate, potassium sodium tartrate, and sodium hydroxide, and (g) The titanium material plated with electrolytic copper is washed with water. , a copper plating film is formed on the surface of the titanium material. In this case, the thickness of the copper plating film is generally about 0.5 to 3μ.
It is preferable to adjust it within the range of m. If it is smaller than 0.5 μm, it will not be able to follow the extension of severe plastic deformation, and if it is larger than 3 μm, no further effect will be obtained and it will be uneconomical. be.

また、冷間圧延段階で用いられる圧延潤滑剤
は、ゼンジマーミルでステンレス鋼を圧延する場
合に用いられる圧延油と同じ種類の液体を使用す
ることができる。即ち、鉱物油を主成分とし、こ
れに少量のエステルを添加した低鹸化価低粘度の
液体である。これを適用する方法は水に分散した
エマルジヨンでも又はニート油でもよいが、苛酷
な冷間圧延をする場合には多量の熱を発生するの
で、冷却効率を上げるために水分散エマルジヨン
を用いることが望ましい。なお、圧延潤滑剤は上
述したように低鹸化価で低粘度の液体を用いるこ
とが望ましいが、これに限定する必要はない。
Further, the rolling lubricant used in the cold rolling stage can be the same type of liquid as the rolling oil used when rolling stainless steel in a Sendzimer mill. That is, it is a liquid with a low saponification value and low viscosity, which has mineral oil as its main component and a small amount of ester added thereto. This can be applied using emulsion dispersed in water or neat oil, but since a large amount of heat is generated during severe cold rolling, it is recommended to use emulsion dispersed in water to increase cooling efficiency. desirable. Note that, as mentioned above, it is desirable to use a liquid with a low saponification value and low viscosity as the rolling lubricant, but there is no need to limit it to this.

(作用) 前述したように、チタン材を冷間圧延する場
合、チタンはワークロールに極めてビルドアツプ
し易い性質を有している。これはチタンが鋼製の
ワークロールと直接に接触し、高い面圧が加わつ
た時に凝着し易い性質を有するためであり、これ
はいかなる圧延潤滑剤を使用しても完全に防げる
ものではない。
(Function) As described above, when a titanium material is cold rolled, titanium has a property that it is extremely easy to build up on a work roll. This is because titanium tends to stick when it comes into direct contact with steel work rolls and is subjected to high surface pressure, and this cannot be completely prevented using any rolling lubricant. .

本発明方法は、圧延されるチタン材の表面に銅
メツキ皮膜を形成し、この銅メツキ皮膜がチタン
材の冷間圧延段階においてワークロールとの間に
介在するので、チタンと鋼の直接接触を妨げてビ
ルドアツプの発生を防止する。また、鋼は比較的
軟質でありかつ剪断抵抗が小さいので、冷間圧延
の際のロールバイト内での摩擦抵抗を緩和し、チ
タン材の塑性変形を容易にする作用をする。しか
しながら、金属である銅の作用だけで摩擦抵抗を
下げることには限度があり、これを補うために前
述した潤滑剤が用いられ、潤滑剤は銅メツキ皮膜
とワークロールとの間に液膜を形成して冷間圧延
時のロールバイト内に低い摩擦係数を確保し、た
とえ液膜の局部的な切れが作業中に生じても、上
記した銅の作用によつて摩擦係数の大きな上昇を
生じることはなく、更に潤滑剤の冷却作用によつ
て冷間圧延中に発生した熱を除去することができ
る。
In the method of the present invention, a copper plating film is formed on the surface of the titanium material to be rolled, and this copper plating film is interposed between the work roll and the titanium material during the cold rolling stage, so that direct contact between titanium and steel is prevented. to prevent build-up from occurring. Further, since steel is relatively soft and has low shear resistance, it acts to ease the frictional resistance within the roll bite during cold rolling and facilitate the plastic deformation of the titanium material. However, there is a limit to lowering the frictional resistance just by the action of copper, which is a metal, and to compensate for this, the lubricant described above is used, and the lubricant forms a liquid film between the copper plating film and the work roll. This ensures a low coefficient of friction within the roll bite during cold rolling, and even if a local break in the liquid film occurs during work, the coefficient of friction will greatly increase due to the action of the copper mentioned above. Furthermore, the heat generated during cold rolling can be removed by the cooling effect of the lubricant.

(実施例) 例 1 幅20mm、長さ200mm及び厚さ1.28mmの純チタン
板(JIS1種)を用意し、このチタン板に、前述し
た(a)工程〜(g)工程を含む電気銅メツキ方法で厚さ
1μmの銅メツキ皮膜を形成した。この場合、(a)
工程における研磨としてスコツチブライトによる
バフ研磨を採用し、(b)工程では洗浄液としてフア
インクリーナ4360(日本パーカライジング社製)
を20g/を含む温度90℃の洗浄液を調製し、そ
の中にチタン板を約15分間浸漬し、(d)工程では塩
化白金酸0.5g/を含有する比重1.18の塩酸を
調製し、その中にチタン板を常温で約30分間浸漬
し、(e)工程では酒石酸カリウムナトリウム50g/
を含む洗浄液を調製し、その中にチタン板を常
温で約10秒間浸漬し、更に(f)工程ではメツキ溶液
として硫酸銅60g/、酒石酸カリウムナトリウ
ム160g/、水酸化ナトリウム50g/を含む
メツキ溶液を調製し、その中でチタン板を電流密
度0.4A/dm2で常温において約10分間電気銅メ
ツキしてチタン板の表面に厚さ1μmの銅メツキ
皮膜を形成した。
(Example) Example 1 A pure titanium plate (JIS Class 1) with a width of 20 mm, a length of 200 mm, and a thickness of 1.28 mm is prepared, and electrolytic copper plating including the steps (a) to (g) described above is applied to this titanium plate. method of thickness
A 1 μm copper plating film was formed. In this case, (a)
Buff polishing with Scotchibrite was used for polishing in the process, and in the (b) process, Fine Cleaner 4360 (manufactured by Nippon Parkerizing Co., Ltd.) was used as the cleaning liquid.
Prepare a cleaning solution at a temperature of 90°C containing 20 g of chloroplatinic acid and immerse the titanium plate in it for about 15 minutes. In step (d), prepare hydrochloric acid with a specific gravity of 1.18 containing 0.5 g of chloroplatinic acid, The titanium plate is immersed for about 30 minutes at room temperature, and in step (e) 50 g of potassium sodium tartrate/
The titanium plate is immersed in it for about 10 seconds at room temperature, and in step (f), a plating solution containing 60 g of copper sulfate, 160 g of potassium sodium tartrate, and 50 g of sodium hydroxide is added as a plating solution. A titanium plate was electrolytically plated with copper at a current density of 0.4 A/dm 2 at room temperature for about 10 minutes to form a copper plating film with a thickness of 1 μm on the surface of the titanium plate.

このようにして銅メツキ皮膜を表面に形成した
チタン板を、ワークロール径100mm、圧延速度10
m/min、ロールパス回数6回、圧下率5.8〜24.4
%(ブランク材で)の圧延条件で、かつ圧延用潤
滑剤としてフアインロール704−3(日本パーカラ
イジング社製)を濃度10%含む潤滑剤を用いて、
常温で圧延した。その結果、良好なチタン板が得
られた。
The titanium plate with the copper plating film formed on its surface in this way was rolled with a work roll diameter of 100 mm and a rolling speed of 10 mm.
m/min, number of roll passes 6 times, reduction rate 5.8 to 24.4
% (for blank material) and using a lubricant containing Fine Roll 704-3 (manufactured by Nippon Parkerizing Co., Ltd.) at a concentration of 10% as a rolling lubricant.
Rolled at room temperature. As a result, a good titanium plate was obtained.

例 2 例1における純チタン板と同じ純チタン板を用
意し、このチタン板の表面に、例1で用いた電気
メツキ方法の(f)工程におけるメツキ時間を20分間
にした以外は例1での電気メツキ方法と同じメツ
キ条件で、厚さ2μmの銅メツキ皮膜を形成した。
この銅メツキ皮膜を形成したチタン板を、例1に
おける圧延条件と同じ圧延条件で圧延した。その
結果、良好なチタン板が得られた。
Example 2 The same pure titanium plate as in Example 1 was prepared, and the surface of this titanium plate was coated with the same method as Example 1 except that the plating time in step (f) of the electroplating method used in Example 1 was changed to 20 minutes. A copper plating film with a thickness of 2 μm was formed using the same plating conditions as in the electroplating method.
The titanium plate on which the copper plating film was formed was rolled under the same rolling conditions as in Example 1. As a result, a good titanium plate was obtained.

次に、上記した例1及び例2で得たチタン板の
圧延性を従来技術で得たチタン板の比較例と比較
して評価した。比較例は例1で使用した純チタン
板と同じ純チタン板を銅メツキ処理せずに例1の
圧延条件で冷間圧延したものである。また、圧延
性の評価は次式、 〓%/トン=各ロールパスでの%/T(圧下
率/単位幅当りの圧延荷重)を積算した値によつ
て評価した。
Next, the rollability of the titanium plates obtained in Examples 1 and 2 described above was evaluated in comparison with a comparative example of a titanium plate obtained using the conventional technique. In the comparative example, the same pure titanium plate as that used in Example 1 was cold-rolled under the rolling conditions of Example 1 without copper plating. Further, the rolling property was evaluated using the following formula: %/ton = %/T (rolling reduction ratio/rolling load per unit width) at each roll pass.

この評価結果を添付図面を示す。この図面から
明らかなように、本発明の例1及び例2で得られ
たチタン板はいずれも比較例に較べて圧延性が大
幅に向上している。特に板厚が薄くなり、加工硬
化する後段のロールパスにおいては、比較例のチ
タン板がロールパス3回目からビルドアツプを起
こして圧延性が著しく悪化しているのに対して、
本発明の例1及び例2のチタン板はいずれも6回
の全ロールパス回数にわたつて全くビルドアツプ
せず、高い圧延性を有することが判明した。
The results of this evaluation are shown in the attached drawings. As is clear from this drawing, both the titanium plates obtained in Examples 1 and 2 of the present invention have significantly improved rolling properties compared to the comparative examples. In particular, in the later roll passes where the plate thickness becomes thinner and work hardens, the titanium plate of the comparative example causes build-up from the third roll pass, significantly deteriorating the rollability.
It was found that the titanium plates of Examples 1 and 2 of the present invention did not build up at all over a total of 6 roll passes, and had high rollability.

(発明の効果) 以上説明したように、本発明は、圧延されるチ
タン材の表面に銅メツキを施してチタン材を表面
に銅皮膜を形成し、次に、銅皮膜を形成したチタ
ン材の圧延液体の存在下で冷間圧延することによ
り、優れた潤滑制を発揮し、かつ生産性を大幅に
向上させるなど著しい効果を奏する。
(Effects of the Invention) As explained above, the present invention applies copper plating to the surface of a titanium material to be rolled to form a copper film on the surface of the titanium material, and then removes the titanium material on which the copper film has been formed. Cold rolling in the presence of rolling fluid provides excellent lubrication and produces significant effects such as greatly improving productivity.

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本発明の方法で得たチタン材の圧延性を
従来方法で得たチタン材と比較して示したグラフ
である。
The drawing is a graph showing the rollability of a titanium material obtained by the method of the present invention in comparison with that of a titanium material obtained by a conventional method.

Claims (1)

【特許請求の範囲】 1 圧延されるチタン材の表面に銅メツキを施し
て該チタン材の表面に厚さ0.5〜3μmの範囲の銅
皮膜を形成する段階と、 前記銅皮膜を形成したチタン材を潤滑剤の存在
下で冷間圧延する段階と、 を有するチタン材の冷間圧延方法。 2 銅皮膜形成段階においてチタン材の表面に厚
さ厚さ0.5〜3μmの範囲の銅皮膜を電気銅メツキ
によつて形成する特許請求の範囲第1項記載のチ
タン材の冷間圧延方法。 3 冷間圧延段階で用いられる潤滑剤が水に油を
分散させたエマルジヨン又はニート油である特許
請求の範囲第1項記載のチタン材の冷間圧延方
法。
[Claims] 1. A step of applying copper plating to the surface of a titanium material to be rolled to form a copper film with a thickness in the range of 0.5 to 3 μm on the surface of the titanium material, and a titanium material on which the copper film is formed. A method for cold rolling titanium material, comprising: cold rolling in the presence of a lubricant. 2. The method for cold rolling a titanium material according to claim 1, wherein in the step of forming the copper film, a copper film having a thickness in the range of 0.5 to 3 μm is formed on the surface of the titanium material by electrolytic copper plating. 3. The method for cold rolling titanium material according to claim 1, wherein the lubricant used in the cold rolling step is an emulsion of oil dispersed in water or neat oil.
JP29806087A 1987-11-26 1987-11-26 Method for cold rolling of titanium stock Granted JPH01138005A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29806087A JPH01138005A (en) 1987-11-26 1987-11-26 Method for cold rolling of titanium stock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29806087A JPH01138005A (en) 1987-11-26 1987-11-26 Method for cold rolling of titanium stock

Publications (2)

Publication Number Publication Date
JPH01138005A JPH01138005A (en) 1989-05-30
JPH0513724B2 true JPH0513724B2 (en) 1993-02-23

Family

ID=17854613

Family Applications (1)

Application Number Title Priority Date Filing Date
JP29806087A Granted JPH01138005A (en) 1987-11-26 1987-11-26 Method for cold rolling of titanium stock

Country Status (1)

Country Link
JP (1) JPH01138005A (en)

Also Published As

Publication number Publication date
JPH01138005A (en) 1989-05-30

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