JPH0957344A - Method for coiling steel strip - Google Patents

Method for coiling steel strip

Info

Publication number
JPH0957344A
JPH0957344A JP21206295A JP21206295A JPH0957344A JP H0957344 A JPH0957344 A JP H0957344A JP 21206295 A JP21206295 A JP 21206295A JP 21206295 A JP21206295 A JP 21206295A JP H0957344 A JPH0957344 A JP H0957344A
Authority
JP
Japan
Prior art keywords
steel strip
winding
reel
crown
coil
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.)
Withdrawn
Application number
JP21206295A
Other languages
Japanese (ja)
Inventor
Satoru Matoba
哲 的場
Koji Tanaka
康治 田中
Masaaki Morimoto
正明 森本
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
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 Steel Corp filed Critical Nippon Steel Corp
Priority to JP21206295A priority Critical patent/JPH0957344A/en
Publication of JPH0957344A publication Critical patent/JPH0957344A/en
Withdrawn legal-status Critical Current

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  • Storage Of Web-Like Or Filamentary Materials (AREA)
  • Winding, Rewinding, Material Storage Devices (AREA)

Abstract

PROBLEM TO BE SOLVED: To surely prevent edge waving on the both end parts of a steel strip in the initial stage of coiling by forming a crown on the central part in the width direction of a tension reel and coiling the steel strip. SOLUTION: A steel strip is coiled on a tension reel 2 with a crown formed by 0.2 to 20mm at the position of 30 to 90% in the central part of width direction of the tension reel (mandrel) 2 and it is made to a steel strip coil 3. In this case, the winding amount of steel strip at the position of the crown part 5 of the reel 2 is made large, the crown 5 is compressed and made small with the tightening force of winding, the reel 2 is shrunk and in the final coil state after being pulled out, the diameter distribution of the steel strip in the width direction of initial stage 4 of coiling is made uniform. Therefore, the quality of the steel strip is improved and the yield can be also improved.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明方法は、鋼帯巻き取り
方法に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel strip winding method.

【0002】[0002]

【従来の技術】調質圧延後の鋼帯、連続焼鈍設備での熱
処理後調質圧延を施した鋼帯及び形状矯正のためテンシ
ョンレベラを施した鋼帯(以下形状矯正後の鋼帯とい
う)は、テンションリールに所定量巻き取って鋼帯コイ
ルとし、この鋼帯コイルをテンションリールから抜き取
り、次工程あるいは需要家のめっき工程、成形工程等の
プロセシングライン入側のコイル巻き戻しリールに供給
するものである。このようにテンションリールから鋼帯
コイルを抜き取るため、上記テンションリールの芯、す
なわちマンドレルは直径を拡大・縮小可能とし、拡大時
に真円になるようにしておいて形状矯正後の鋼帯を所定
量巻き取り、その後マンドレル直径を縮小して、鋼帯コ
イルを抜き取るものであり、抜き取り後のコイル潰れ防
止の観点および鋼帯に押し疵等を付けない観点からマン
ドレル表面を可能な限り真円に近い円筒状すると共に、
鋼帯に強い巻き癖が付かないようにマンドレル直径は鋼
帯が降伏しない条件としている。さらに、テンションリ
ールは鋼帯に張力を掛けてコイル状に巻き取るためコイ
ル内径部分に強い巻き締まり力が掛かるので、マンドレ
ルは変形ができるだけ少なくなるよう設計・製作されて
いる。
2. Description of the Related Art Steel strips after temper rolling, steel strips that have been subjected to temper rolling after heat treatment in a continuous annealing facility, and steel strips that have been subjected to a tension leveler to correct the shape (hereinafter referred to as "steel strips after shape correction") Is a predetermined amount wound on a tension reel to form a steel strip coil, and this steel strip coil is extracted from the tension reel and supplied to the coil rewind reel on the processing line entry side of the next process or the customer's plating process, molding process, etc. It is a thing. Since the steel strip coil is pulled out from the tension reel in this way, the core of the tension reel, that is, the mandrel, can be enlarged or reduced in diameter, and when it is enlarged, it is made into a perfect circle so that the shape-corrected steel strip has a predetermined amount. Winding and then reducing the mandrel diameter to extract the steel strip coil.The mandrel surface is as close to a perfect circle as possible from the viewpoints of preventing the coil from collapsing after extraction and preventing the steel strip from being damaged. While making it cylindrical,
The mandrel diameter is set so that the steel strip does not yield so that the steel strip does not have a strong curl. Furthermore, since the tension reel applies a tension to the steel strip and winds it into a coil, a strong winding tightening force is applied to the inner diameter portion of the coil, so the mandrel is designed and manufactured so that deformation is minimized.

【0003】[0003]

【発明が解決しょうとする課題】しかしながら、図2に
示すごとく形状矯正後の板厚0.15〜0.40mmの
例えば、缶用鋼帯1をテンションリール2に巻き取り鋼
帯コイル3にすると、巻き取り初期4(テンションリー
ルマンドレル径の設定穴径から、20〜50mm巻き厚
部、鋼帯長さでテンションリール巻き取り先端から50
〜200m長さ)の鋼帯1の幅方向両端部が鋼帯長手方
向に波を打つ(一般に耳波という)形状不良が発生し、
品質を著しく損ない、しかも歩留りも大幅に低下させる
等の課題がある。本発明方法は、このような課題を有利
に解決するためになされたものであり、耳波形状不良を
ほとんど発生しない、形状矯正後の鋼帯巻き取り方法を
提供することを目的とするものである。
However, as shown in FIG. 2, for example, when a steel strip 1 for a can having a plate thickness of 0.15 to 0.40 mm after shape correction is wound on a tension reel 2 to form a steel strip coil 3. , Initial winding 4 (from the set hole diameter of the tension reel mandrel diameter, 20 to 50 mm thick winding portion, and the length of the steel strip from the tension reel winding end to 50
The widthwise ends of the steel strip 1 (about 200 m in length) wavy in the longitudinal direction of the steel strip (generally referred to as selvage waves), resulting in a defective shape.
There is a problem that the quality is significantly impaired and the yield is significantly reduced. The method of the present invention has been made in order to advantageously solve such a problem, and an object thereof is to provide a steel strip winding method after shape correction, which hardly causes seismic wave shape defects. is there.

【0004】[0004]

【課題を解決するための手段】本発明の特徴とするとこ
ろは、形状矯正後の鋼帯をテンションリールに巻き取る
に際し、テンションリールの幅方向中央部にクラウンを
形成せしめて、鋼帯を巻き取ることを特徴する鋼帯巻き
取り方法である。
A feature of the present invention is that, when the shape-corrected steel strip is wound on a tension reel, the steel strip is wound by forming a crown at the widthwise center of the tension reel. It is a steel strip winding method characterized by taking.

【0005】[0005]

【発明の実施の形態】一般に、飲料缶等に用いる0.1
5〜0.4mmの例えば、缶用鋼帯を処理するめっき設
備、コイル準備設備、形状矯正を施すテンションレベラ
設備などの鋼帯の処理ラインにおいては、通板用ロール
およびテンションリールの直径は、当該ラインを通板す
る鋼帯に、これらのロール類での曲げ変形により塑性変
形することのないように、降伏曲率よりも大径ロールと
している。式で記述すると曲率係数βを、板厚h、弾性
係数E、ロール類の直径D、鋼帯の降伏応力をYを用い
て, β= hE/DY (1) と定義したとき, β≦1としており、特に缶用鋼帯等の
薄鋼帯の場合は、ほとんど板厚と鋼帯材質の条件で、β
≦0.5となるような大径ロール径を設定するのが一般
的である。
BEST MODE FOR CARRYING OUT THE INVENTION Generally used in beverage cans and the like 0.1
For example, in a steel strip processing line such as a plating equipment for processing a steel strip for cans, a coil preparation equipment, and a tension leveler equipment for performing shape correction, the diameters of the sheet passing roll and the tension reel are 5 to 0.4 mm. The steel strip passing through the line has a diameter larger than the yield curvature so as not to be plastically deformed by the bending deformation of these rolls. If the curvature coefficient β is expressed as an equation, β = hE / DY (1) using the plate thickness h, elastic coefficient E, roll diameter D, and yield stress of steel strip as Y, β ≤ 1 In particular, in the case of thin steel strips such as steel strips for cans, β
It is common to set a large roll diameter such that ≦ 0.5.

【0006】ところが、本発明者等が解析した結果によ
ると、前記のごとき鋼帯の形状不良が発生する原因は、
塑性変形しないようにしているはずのテンションリール
への巻き取りに際して、巻き取りによる巻き締まり力と
鋼帯内部の残留応力が加わるため鋼帯が塑性変形するこ
とに起因していることが判明した。また、鋼帯コイルの
巻き締まり力、鋼帯の残留応力等を考慮していなかった
め、テンションリールでの鋼帯の変形が解析できていな
かったことも判明した。形状矯正後の鋼帯をテンション
リールに巻き取って行く場合、鋼帯巻き取り初期の鋼帯
には、巻き取張力に等しい引張応力がかかっているが、
巻き数が増えていくにつれて、コイル外周部からの巻き
締まり力により、巻き取り初期は強く圧縮されるように
なり、鋼帯が巻きつくテンションリールマンドレルは弾
性変形で縮んで直径が小さくなり、それにつれて、巻き
取り初期の鋼帯に圧縮ひずみが加わることになる。つま
り、巻き取り初期の鋼帯は鋼帯長手方向の圧縮曲げの変
形状態となる。この圧縮ひずみが鋼帯の降伏ひずみ(弾
性限界ひずみ)を越えると鋼帯が塑性変形して、鋼帯の
長さが僅かに短くなることになる。
However, according to the result of analysis by the present inventors, the cause of the shape defect of the steel strip is as follows.
It was found that this is caused by the plastic deformation of the steel strip due to the winding tightening force and the residual stress inside the steel strip that are applied during winding on the tension reel, which should not be plastically deformed. It was also found that the deformation of the steel strip on the tension reel could not be analyzed because the tightening force of the steel strip coil and the residual stress of the steel strip were not taken into consideration. When winding the shape-corrected steel strip on a tension reel, the steel strip in the initial stage of winding the steel strip has a tensile stress equal to the winding tension.
As the number of turns increases, the tightening force from the outer circumference of the coil causes the coil to be strongly compressed in the initial stage of winding, and the tension reel mandrel around which the steel strip is wound contracts due to elastic deformation and the diameter decreases. Along with this, compressive strain is applied to the steel strip in the early stage of winding. That is, the steel strip in the initial winding stage is in a deformed state of compression bending in the longitudinal direction of the steel strip. When this compressive strain exceeds the yield strain (elastic limit strain) of the steel strip, the steel strip is plastically deformed and the length of the steel strip is slightly shortened.

【0007】しかしながら一般に鋼帯には、鋼帯幅方向
に板クラウン(鋼帯幅方向の中央部が若干厚く、両端部
が若干薄い)が形成されており、テンションリールへの
巻き取りに際し、鋼帯幅方向中央部の巻き取り初期を圧
縮する力が大きいため、この圧縮ひずみも幅方向中央部
の方が大きくなり、幅方向中央部の鋼帯長さが短くなる
ことになる。また、たとえ板クラウンの無い幅方向に均
一な板厚の鋼帯をテンションリールに巻き付け、均一な
圧縮力がマンドレルに掛かっても、材料力学の理論から
は端部よりも板幅方向中央部のマンドレルの変形の方が
大きくなることが導かれる。つまり、テンションリール
に巻き取ったコイルにおいて、巻き締まり力でコイル内
径部が変形するとき、鋼帯の幅中央部が短くなる傾向と
なる。すなわち、鋼帯にとっては幅方向中央部の長さが
短くなっており、コイルを巻き戻して鋼帯の拘束を取り
除くと相対的に鋼帯端部が長くなった形状となる。つま
り、これが耳波の形状不良として現れることになる。
However, in general, a steel strip is formed with a plate crown in the widthwise direction of the steel strip (the center portion in the widthwise direction of the strip is slightly thicker and both ends are slightly thinner). Since the force that compresses the initial portion of the winding in the central portion in the width direction is large, this compressive strain also becomes larger in the central portion in the width direction, and the steel strip length in the central portion in the width direction becomes shorter. Also, even if a steel strip with no plate crown and a uniform plate thickness in the width direction is wound around the tension reel and a uniform compression force is applied to the mandrel, the theory of material mechanics suggests that the central part of the plate width direction is more than the end part. It can be seen that the deformation of the mandrel is larger. That is, in the coil wound on the tension reel, when the coil inner diameter portion is deformed by the winding tightening force, the width center portion of the steel strip tends to be shortened. That is, for the steel strip, the central portion in the width direction is short, and when the coil is rewound to remove the restraint of the steel strip, the end portion of the steel strip becomes relatively long. That is, this appears as a defective shape of the ear wave.

【0008】更に、本発明者等は鋼帯のテンションリー
ル巻き取りにおける鋼帯の変形状態を力学的に検討した
ところ、テンションリール直径をDr(mm)、巻き取
りで生ずるリールマンドレル直径の縮小量をΔD1とす
ると、リールマンドレル変形によって生ずるコイル内径
付近の鋼帯の圧縮のひずみ量εc1は、直径がほぼDr
なので、 εc1= ΔD1/Dr (2) となる。(ここでは、圧縮応力、圧縮ひずみの符号を正
と定義する。) 続いて、この巻き取った鋼帯コイルをテンションリール
から取り外すため、マンドレルを縮小すると、いままで
コイル外周部からの巻き締まり力を支えていたマンドレ
ルの抵抗がなくなるのでコイル内径部の付近の鋼帯は圧
縮されて更に直径でΔD2分だけ縮む。内径部付近の直
径はほぼDrと見なせるので、その時の圧縮ひずみΔε
2は、 εc2= ΔD2/Dr (3) となる。この圧縮ひずみの合計εc1+εc2は幅方向中央
部が大きく, 板端部では幅中央部の数分の1という測定
結果が得られた。テンションリールに巻きついた鋼帯巻
き取り初期の鋼帯の曲げひずみεbは、板厚hとリール
直径Drにより、 εb=h/Dr (4) と求められ、鋼帯のリール側表層部は圧縮ひずみ、反対
側表層部に引張ひずみが加わる。このひずみは鋼帯幅方
向でほとんど一定である.一方、形状矯正を施した薄鋼
帯の長手方向残留応力の板厚位置での分布を詳細に測定
した結果では、鋼帯の表層部に圧縮の残留応力があり、
鋼帯厚中心部には引張の残留応力がある。この鋼帯表層
部の圧縮の残留応力をσs(ここでは圧縮応力の符号を
正と定義した)とすると、この残留応力σsによる鋼帯
表層の残留ひずみεsは、弾性係数Eを用いて、 εs= σs/E (5) と表すことができる。したがって、巻き取られた鋼帯の
リール側表層部に導入されるひずみの合計は、 εc1
+εc2+εb+εs となる。鋼帯の降伏ひずみεe
は鋼帯の降伏応力Yと弾性係数Eにより、 εe= Y/E (6) 求まるので、このεeよりも鋼帯巻き取り初期の鋼帯に
加わる各種の圧縮ひずみの合計の方が大きいと鋼帯は塑
性変形し、永久ひずみεp(鋼帯は長手方向に短くな
る)が次の式のように残ることになる。 εp=(εc1+εc2+εb+εs)−εe (7) 本発明方法により解決しようとしている鋼帯巻き取り時
のコイル内径部の形状不良は、(7)式において、εp
>0の条件となり、しかも、鋼帯の幅方向中央部が大き
く、鋼帯幅方向端部が小さいために耳波として形状に現
れるものである。
Further, the inventors of the present invention mechanically examined the deformed state of the steel strip in winding the tension reel of the steel strip. As a result, the diameter of the tension reel was Dr (mm), and the reduction amount of the reel mandrel diameter caused by the winding. Is ΔD1, the strain amount εc1 of compression of the steel strip near the inner diameter of the coil caused by the reel mandrel deformation is approximately Dr.
Therefore, εc1 = ΔD1 / Dr (2). (Here, the signs of compressive stress and compressive strain are defined as positive.) Then, to remove this wound steel strip coil from the tension reel, when the mandrel is contracted, the winding tightening force from the coil outer periphery until now. Since the resistance of the mandrel supporting the coil disappears, the steel strip near the inner diameter of the coil is compressed and further contracted by ΔD2 in diameter. Since the diameter near the inner diameter can be regarded as Dr, the compressive strain Δε at that time
2 becomes εc2 = ΔD2 / Dr (3). The total compression strain εc1 + εc2 was large in the widthwise central part, and a measurement result was obtained that was a fraction of the widthwise central part at the plate edge. The bending strain εb of the steel strip in the initial stage of winding the steel strip wound on the tension reel is determined as εb = h / Dr (4) from the plate thickness h and the reel diameter Dr, and the surface layer of the steel strip on the reel side is compressed. Strain, tensile strain is applied to the surface layer on the opposite side. On the other hand, this strain is almost constant in the width direction of the steel strip.On the other hand, the distribution of the residual stress in the longitudinal direction of the thin steel strip that has undergone shape correction at the thickness position is measured in detail. Has residual stress of
There is tensile residual stress in the center of the steel strip thickness. Assuming that the compressive residual stress of this steel strip surface layer is σs (here, the sign of the compressive stress is defined as positive), the residual strain εs of the steel strip surface layer due to this residual stress σs is given by εs = σs / E (5) Therefore, the total strain introduced to the reel side surface layer of the wound steel strip is εc1
+ Εc2 + εb + εs. Yield strain of steel strip εe
Is εe = Y / E (6) from the yield stress Y of the steel strip and the elastic modulus E. Therefore, if the sum of various compressive strains applied to the steel strip at the initial stage of winding the steel strip is larger than εe, The strip is plastically deformed, and the permanent strain εp (the steel strip becomes shorter in the longitudinal direction) remains as in the following formula. [epsilon] p = ([epsilon] c1 + [epsilon] c2 + [epsilon] b + [epsilon] s)-[epsilon] e (7) The shape defect of the coil inner diameter portion at the time of winding the steel strip, which is to be solved by the method of the present invention, is expressed by the formula (7).
The condition is> 0, and the steel strip has a large central portion in the width direction and a small end portion in the width direction of the steel strip, so that it appears as a wave.

【0009】巻き取り鋼帯巻き取り初期鋼帯にのみ形状
不良が発生するのは、巻き取り初期に巻かれた鋼帯自体
が、コイル潰れ防止にしばしば用いられるスリーブの役
目をして外径部からの巻き締まり力に対抗するため鋼帯
コイルの外周側では、上記(2)(3)式の圧縮ひずみ
の合計が小さくなることと、(4)式の曲げひずみも鋼
帯の板厚と曲げ直径の比なので、鋼帯コイルの外径側で
巻き太って直径が大になるにつれて小さくなり、(7)
式においてεp<0の条件、すなわち弾性変形領域に入
り易くなるためである。また、実際には、たとえ永久ひ
ずみがあっても、それが小さい場合は、形状不良として
鋼帯に現れないのコイルに巻かれた鋼帯の外周まで形状
不良になることは稀である。(4)式の曲げひずみは、
鋼帯厚hに比例して大きくなるので、厚物ほど塑性変形
域に入り易くなり、厚物の方が形状不良に成り易いと一
見考えられる。しかし、鋼帯厚さが0.8mm程度の例
えば自動車用途等の鋼帯でコイル内周部の形状不良が問
題とならず、厚さの小さい0.15〜0.4mm厚の缶
用鋼帯等に形状不良で問題となるのは、厚物になると同
じ重量のコイルを同一の単位面積当たりの張力で巻いて
も、巻き数がすくないためコイルの巻き締まり圧縮力が
小さくなることと、鋼帯内のひずみ差が等しいとして
も、厚物ほど座屈応力が大きいため、耳波発生による形
状不良が顕在化しにくくなるためである。
Deformation occurs only in the rolled steel strip in the initial winding stage because the rolled steel strip in the initial winding stage serves as a sleeve often used to prevent the coil from collapsing, and the outer diameter portion. In order to counter the winding tightening force from the above, the total of the compressive strains of the above formulas (2) and (3) becomes small on the outer peripheral side of the steel strip coil, and the bending strain of the formula (4) also depends on the plate thickness of the steel strip. Since it is the ratio of the bending diameter, it becomes smaller as the diameter increases with winding on the outer diameter side of the steel strip coil.
This is because the condition of εp <0 in the equation, that is, the elastic deformation region is easily entered. Further, in reality, even if there is a permanent strain, if it is small, it is rare that the outer circumference of the steel strip wound around the coil does not appear as a poor shape and the outer circumference of the steel strip is defective. The bending strain of equation (4) is
Since the thickness increases in proportion to the steel strip thickness h, it seems that the thicker the steel, the easier it is to enter the plastic deformation region, and the thicker the steel, the more likely it is that the shape will be poor. However, in a steel strip having a steel strip thickness of about 0.8 mm, for example, a steel strip for automobiles and the like, the shape defect of the inner circumference of the coil does not pose a problem, and the steel strip for a can having a small thickness of 0.15 to 0.4 mm is used. The problem with shape failure is that even if a thick coil is wound with the same tension per unit area as the product becomes thicker, the winding tightening compressive force becomes smaller because the number of windings is small, and This is because, even if the strain difference in the band is equal, the buckling stress is larger as the material is thicker, and thus the shape defect due to the generation of the ear wave is less likely to be manifested.

【0010】したがって、巻き取りで発生する塑性ひず
みを表す(7)式より、形状不良を起こさなくするため
には、εp≦0 として、鋼帯の全幅、全長にわたって
全体を弾性変形域に止めるか、εp>0の塑性曲げ変形
条件であっても、幅方向で均一のひずみにすれば、塑性
曲げで巻き癖がついて板反りは発生しても鋼帯長さ変化
の幅方向の差がなく、耳波の発生する形状不良とはなら
ないことになる。εp≦0の条件は、降伏応力の大きい
鋼帯、つまり硬くて変形しにくい鋼帯を選べば、(6)
式のようにεeが大きくなり、容易に達成できるように
なるが、降伏応力は鋼帯用途で決まっており製造者側で
勝手に変更することができない。また、(2)式の圧縮
ひずみεc1を小さくするために、巻き取り張力による
巻き締まり力に耐える強固な剛性を持ったテンションリ
ールに巻き取る方法も考えられるが、実際には巻き取っ
た鋼帯コイルをテンションリールから抜き取る際にリー
ル径を縮小すると、鋼帯の剛性だけでは巻き締まり力に
耐えきれず、結局、(3)式に示したリール抜き取りに
よる圧縮ひずみεc2が、それほど強固でないリールの
ときよりも大きくなる。つまり、εc1+εc2として
はあまり変わらなくなり、有効性はかなり減少する。さ
らに、薄鋼帯で発生しやすいコイル潰れを防止するため
に用いる内径スリーブ(通常の製造工程では、板厚2〜
5mmの鋼製の円筒、もしくは厚さ10〜20mmの紙
製円筒等が用いられる)を剛性の高い強固なスリーブ、
例えば、厚さ30mm程度の鋼製スリーブにし、このス
リーブを抜き取ることなく, コイルを巻き戻すならば,
εc1, εc2共ほとんど0にできるので耳波は防止で
きるが、このようなスリーブは余りにも重く、特別な設
備を備えない限りコイルやスリーブのハンドリングがほ
とんどできない等の難点がある。
Therefore, according to the equation (7) representing the plastic strain generated in the winding, in order to prevent the defective shape, εp≤0, and the entire width and the entire length of the steel strip are kept in the elastic deformation region. , Even if the plastic bending deformation condition is εp> 0, there is no difference in the width direction of the change in the length of the steel strip even if there is a curl due to the plastic bending and a warp occurs if the strain is uniform in the width direction. Therefore, the shape of the ear wave is not defective. The condition of εp ≦ 0 is (6) if a steel strip with a large yield stress, that is, a steel strip that is hard and difficult to deform is selected.
As shown in the formula, εe becomes large and can be easily achieved, but the yield stress is determined by the steel strip application and cannot be arbitrarily changed by the manufacturer. Further, in order to reduce the compressive strain εc1 of the formula (2), a method of winding on a tension reel having strong rigidity to withstand a winding tightening force due to winding tension can be considered, but in reality, the rolled steel strip is used. If the reel diameter is reduced when the coil is pulled out from the tension reel, the rigidity of the steel strip alone cannot withstand the winding tightening force. It will be bigger than when. That is, εc1 + εc2 does not change much, and the effectiveness is considerably reduced. Furthermore, an inner diameter sleeve used to prevent coil crushing that tends to occur in thin steel strips (a plate thickness of 2
A 5 mm steel cylinder, or a 10-20 mm thick paper cylinder, etc.) is used as a rigid sleeve with high rigidity.
For example, if you use a steel sleeve with a thickness of about 30 mm and rewind the coil without removing this sleeve,
Since both εc1 and εc2 can be set to almost 0, ear waves can be prevented, but such a sleeve is too heavy, and there is a drawback that the coil and the sleeve can hardly be handled unless special equipment is provided.

【0011】しかして、本発明方法においては、上記
(7)式で、εp>0であっても、幅方向でのひずみ量
を等しくして形状不良を防止できる方法を見い出したも
のである。その方法は、前記のごとくテンションリール
の幅方向中央部にクラウンを形成せしめて、鋼帯を巻き
取るものであり、従来用いられている通常の直径一定の
テンションリールのマンドレルを用いると、鋼帯自体が
元から持っている板厚クラウンや巻き締まり力によるマ
ンドレルの弾性変形のため、マンドレル直径の縮み量Δ
D1が幅方向の中央部で大きくなる放物線型の分布とな
り、鋼帯幅方向中央部は圧縮曲げになって長さが短くな
るが、鋼帯端部の鋼帯はリール部分が支えてくれるの
で、弾性曲げ変形、もしくは塑性曲げ変形しても幅中央
部より小さい圧縮ひずみに止まる。
In the method of the present invention, however, the inventors have found a method capable of preventing a defective shape by equalizing the strain amounts in the width direction even if εp> 0 in the above formula (7). As described above, the steel strip is wound by forming a crown in the widthwise central portion of the tension reel as described above, and if a conventional conventional tension reel mandrel with a constant diameter is used, the steel strip is The contraction amount of the mandrel diameter due to the elastic deformation of the mandrel due to the plate thickness crown and the winding tightening force that it has originally.
D1 has a parabolic distribution that increases in the widthwise central part, and the central part in the widthwise direction of the steel strip is compressed and shortened in length, but the reel part supports the steel strip at the end of the steel strip. Even when elastically deformed or plastically deformed, the compression strain is smaller than the central width.

【0012】本発明方法は、テンションリール(マンド
レル)の幅方向中央部にクラウンを形成せしめて、鋼帯
を巻き取ることにより、鋼帯幅方向中央部にクラウンを
形成するが、その本質的な作用は、リールマンドレル直
径が巻き締まり力で縮む量と鋼帯コイルをリールから抜
き取った後の縮み量の合計分を補償するようにリールマ
ンドレルの中央部を予め膨らましておくことである。こ
のような作用を主に利用する場合の最適クラウンは、鋼
帯幅方向の30〜90%の部分でクラウンをリールに形
成し、そのクラウン量は中央部の直径増加量として0.
2〜20mmの範囲で膨らませればよい。このクラウン
を付与する範囲、クラウン量はコイル内径にひずみゲー
ジを貼りつけて測定した圧縮ひずみ量より決定するこが
できる。このようにマンドレルに形成するクラウンの幅
が30%より狭いと、中央部に巻き締まり力が集中しす
ぎて鋼帯コイルの幅方向の形状が乱れる可能性があるの
で最小値とした。また、最大を鋼帯幅の90%超にする
と、マンドレル(リール)による支え力が鋼帯端で過剰
となり、鋼帯の縮み量が少なくなり幅方向中央部の鋼の
縮みとの差が大きくなって好ましくないためである。テ
ンションリールに形成したクラウンは、鋼帯幅方向の3
0〜90%で0.2〜20mmの最大クラウンがあれば
よいので、該クラウンの断面形状は、放物線型、台形型
等を採用することができる。凸型でコーナーがある場合
には、コーナーでの形状変形を防ぐためにRを付けるこ
とが望ましい。
According to the method of the present invention, a crown is formed in the central portion in the width direction of the tension reel (mandrel), and the steel strip is wound to form a crown in the central portion in the width direction of the steel strip. The action is to pre-expand the central portion of the reel mandrel so as to compensate for the total amount of the contraction of the reel mandrel diameter due to the winding tightening force and the contraction amount after the steel strip coil is extracted from the reel. The optimum crown when mainly utilizing such an action forms the crown on the reel at 30 to 90% of the portion in the width direction of the steel strip, and the crown amount is 0.
It may be inflated in the range of 2 to 20 mm. The range in which the crown is applied and the amount of the crown can be determined from the amount of compressive strain measured by attaching a strain gauge to the inner diameter of the coil. When the width of the crown formed on the mandrel is smaller than 30% in this manner, the winding tightening force is excessively concentrated in the central portion and the shape in the width direction of the steel strip coil may be disturbed. When the maximum is more than 90% of the width of the steel strip, the supporting force of the mandrel (reel) becomes excessive at the end of the strip, reducing the amount of shrinkage of the strip and increasing the difference from the shrinkage of the steel in the widthwise central part. This is not desirable. The crown formed on the tension reel is 3 in the width direction of the steel strip.
Since it suffices to have a maximum crown of 0.2 to 20 mm at 0 to 90%, a parabolic shape, a trapezoidal shape or the like can be adopted as the cross-sectional shape of the crown. When it is convex and has a corner, it is desirable to add R in order to prevent shape deformation at the corner.

【0013】次に、本発明方法を図面によって説明す
る。図1において、クラウン5をテンションリール(マ
ンドレル)2幅方向中央部の30〜90%の位置に0.
2〜20mm形成せしめたテンションリール2に鋼帯を
巻き取って鋼帯コイル3とする。このときリール(マン
ドレル)2のクラウン5部位の鋼帯巻き取り量が大きく
なり、巻き締まり力によりこのクラウン5は圧縮されて
小さくなり、リール(マンドレル)2を縮小して抜き取
った後の最終コイル状態では、巻き取り初期4の幅方向
の鋼帯直径分布は均一となり、鋼帯コイル3の巻き取り
初期4の鋼帯幅方向端部の耳波発生を防止するものであ
る。
Next, the method of the present invention will be described with reference to the drawings. In FIG. 1, the crown 5 is moved to the tension reel (mandrel) 2 at a position of 30 to 90% of the central portion in the width direction.
A steel strip coil 3 is formed by winding a steel strip around a tension reel 2 having a thickness of 2 to 20 mm. At this time, the winding amount of the steel strip in the crown 5 portion of the reel (mandrel) 2 becomes large, and the crown 5 is compressed and becomes small by the winding tightening force, and the final coil after the reel (mandrel) 2 is contracted and extracted. In the state, the steel strip diameter distribution in the width direction in the initial stage 4 of winding is uniform, and the generation of the ear wave at the end portion of the steel strip coil 3 in the width direction in the initial stage 4 of winding is prevented.

【0014】次に本発明方法の実施例を比較例とともに
挙げる。
Next, examples of the method of the present invention will be given together with comparative examples.

【表1】 注1:鋼帯成分 重量% 、C:0.04〜0.12、Mn:0.30 〜
0.45、Si:0.005、P:0.015 〜0.025 、S :0.010〜0.020
、ol.Al:0.01、Ti: 痕跡、Nb: 痕跡、残りFe及び不純
物からなる鋼帯厚 0.18 〜0.32mm、鋼帯幅 900mmの冷
延鋼帯を、缶用鋼帯の原板としてテンパー度 T4 〜 T5
になるように焼鈍し、続いて圧下率 1.5〜2.0 %の調質
圧延を施した。次いで、テンションリールへの巻き取り
は、2000〜3500巻きで、約15tコイルとし
た。 注2:鋼帯形状矯正は、SPと表記したものは調質圧延
後に巻き取った鋼帯を示し、調質圧延後、テンションレ
ベラにて形状矯正を施した鋼帯はTLと表記した。 注3:クラウンは、凸クラウンを形成せしめたもので、
鋼帯幅中央部が最大クラウンとなり、クラウン幅より外
側は一定(リールマンドレルの本来の直径)とした。ク
ラウンの断面形状は、クラウンの幅端部と幅方向中央部
の外縁が、ほぼ放物線型とした。 注4:テンションリールマンドレルへのクラウン形成
は、肉盛溶接にて形成した。 注5 :鋼帯耳波の評価は、鋼帯巻き取り初期(巻き取り
先端から200m)の鋼帯を2m毎切り出して、水平な
定盤上においたとき、鋼帯端の波高さ1.5mm未満の
耳波発生を小、1.5〜3.0mmの波高さを中、3.
0〜4.5mmの波高さを大、4.5mm超を特大とし
た。耳波小にできればほとんどの用途で合格となる。耳
波中の場合は厳しい用途には不合格となり、耳波大では
全ての用途で不合格となる。
[Table 1] Note 1: Steel strip composition wt%, C: 0.04 to 0.12, Mn: 0.30 to
0.45, Si: 0.005, P: 0.015 to 0.025, S: 0.010 to 0.020
, Ol.Al:0.01, Ti: traces, Nb: traces, residual Fe and impurities with a steel strip thickness of 0.18 to 0.32 mm and a steel strip width of 900 mm. ~ T5
And then temper-rolled at a rolling reduction of 1.5 to 2.0%. Next, the winding on the tension reel was 2000 to 3500 windings, and a coil of about 15 t was used. Note 2: For the steel strip shape correction, the one denoted by SP indicates a steel strip rolled after temper rolling, and the steel strip subjected to shape correction by the tension leveler after temper rolling is denoted as TL. Note 3: The crown is a convex crown,
The center of the width of the steel strip is the maximum crown, and the outside of the crown width is constant (the original diameter of the reel mandrel). As for the cross-sectional shape of the crown, the width edge and the outer edge of the center portion in the width direction were almost parabolic. Note 4: The crown was formed on the tension reel mandrel by overlay welding. Note 5: For the evaluation of steel strip seismic waves, when a steel strip at the initial stage of winding the steel strip (200 m from the winding tip) is cut out every 2 m and placed on a horizontal surface plate, the wave height of the steel strip edge is 1.5 mm. 2. Ear wave generation of less than is small, wave height of 1.5 to 3.0 mm is medium, 3.
The wave height of 0 to 4.5 mm is large, and the wave height of more than 4.5 mm is extra large. If the ear wave is small, it will pass in most applications. In the case of ear wave, it fails in severe applications, and in the case of ear wave, it fails in all applications.

【0015】[0015]

【発明の効果】本発明法によれば、調質圧延の形状矯正
後の鋼帯巻き取り時に発生する、巻き取り初期の鋼帯両
端部の耳波を確実に防止することができ、鋼帯の品質を
向上せしめると共に、歩留りも高めることができ、さら
に、形状不良部を切り捨てるための余計な工程も不要と
なる。また、装置の改造としては、テンションリールマ
ンドレルへの肉盛り溶接程度、もしくは、リールマンド
レルに鋼帯幅より狭い固定スリーブ(着脱自在に設計し
た)を被せる程度ですむので、低コストで鋼帯両端部の
耳波を防止することができる。また、巻き取り張力制御
などの複雑な制御を必要としないので、従前の高い生産
性を維持しつつ、品質を向上することができる等の優れ
た効果が得られる。
EFFECTS OF THE INVENTION According to the method of the present invention, it is possible to reliably prevent seismic waves at both ends of the steel strip at the initial stage of winding, which occurs during winding of the steel strip after shape correction in temper rolling. The quality can be improved and the yield can be improved, and an extra step for discarding the defective shape portion is unnecessary. The equipment can be modified by overlay welding on a tension reel mandrel or by covering the reel mandrel with a fixed sleeve (designed to be detachable) narrower than the steel strip width. It is possible to prevent the ear wave of the part. Further, since complicated control such as winding tension control is not required, it is possible to obtain an excellent effect such that the quality can be improved while maintaining the conventional high productivity.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明方法の一例を示す正面断面図である。FIG. 1 is a front sectional view showing an example of the method of the present invention.

【図2】従来方法の鋼帯巻き取りを示す側面図である。FIG. 2 is a side view showing winding of a steel strip according to a conventional method.

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 形状矯正後の鋼帯をテンションリールに
巻き取るに際し、テンションリールの幅方向中央部にク
ラウンを形成せしめて、鋼帯を巻き取ることを特徴する
鋼帯巻き取り方法。
1. A method of winding a steel strip, comprising winding a shape-corrected steel strip on a tension reel by forming a crown at the center of the tension reel in the width direction and winding the steel strip.
【請求項2】 テンションリールに鋼帯幅方向の30〜
90%を0.2〜20mmのクラウンを形成せしめて、
鋼帯を巻き取ることを特徴とする請求項1に記載の鋼帯
巻き取り方法。
2. A tension reel having a width of 30 to 30 in the width direction of the steel strip.
90% to form a crown of 0.2 to 20 mm,
The steel strip winding method according to claim 1, wherein the steel strip is wound up.
JP21206295A 1995-08-21 1995-08-21 Method for coiling steel strip Withdrawn JPH0957344A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21206295A JPH0957344A (en) 1995-08-21 1995-08-21 Method for coiling steel strip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21206295A JPH0957344A (en) 1995-08-21 1995-08-21 Method for coiling steel strip

Publications (1)

Publication Number Publication Date
JPH0957344A true JPH0957344A (en) 1997-03-04

Family

ID=16616241

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21206295A Withdrawn JPH0957344A (en) 1995-08-21 1995-08-21 Method for coiling steel strip

Country Status (1)

Country Link
JP (1) JPH0957344A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002045876A1 (en) * 2000-12-04 2002-06-13 Alcan International Limited Storage and transportation of aluminium strip
WO2020196293A1 (en) * 2019-03-22 2020-10-01 日本製鉄株式会社 Manufacturing device and manufacturing method for hot-rolled coil

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002045876A1 (en) * 2000-12-04 2002-06-13 Alcan International Limited Storage and transportation of aluminium strip
US7497402B2 (en) 2000-12-04 2009-03-03 Alcan International Limited Storage and transportation of aluminium strip
WO2020196293A1 (en) * 2019-03-22 2020-10-01 日本製鉄株式会社 Manufacturing device and manufacturing method for hot-rolled coil
JPWO2020196293A1 (en) * 2019-03-22 2021-10-21 日本製鉄株式会社 Hot-rolled coil manufacturing equipment and manufacturing method
CN113597348A (en) * 2019-03-22 2021-11-02 日本制铁株式会社 Device and method for manufacturing hot-rolled coil
US11697144B2 (en) 2019-03-22 2023-07-11 Nippon Steel Corporation Manufacturing apparatus and manufacturing method of hot-rolled coil

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