JPS6393429A - Method and device for removing buckling of edge part of coil plate - Google Patents
Method and device for removing buckling of edge part of coil plateInfo
- Publication number
- JPS6393429A JPS6393429A JP23946586A JP23946586A JPS6393429A JP S6393429 A JPS6393429 A JP S6393429A JP 23946586 A JP23946586 A JP 23946586A JP 23946586 A JP23946586 A JP 23946586A JP S6393429 A JPS6393429 A JP S6393429A
- Authority
- JP
- Japan
- Prior art keywords
- coil plate
- buckling
- plate material
- tension
- edge
- 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
- 238000000034 method Methods 0.000 title claims description 17
- 239000000463 material Substances 0.000 claims abstract description 69
- 238000010438 heat treatment Methods 0.000 claims abstract description 22
- 230000037303 wrinkles Effects 0.000 abstract description 14
- 238000005520 cutting process Methods 0.000 abstract description 5
- 239000010953 base metal Substances 0.000 abstract 1
- 230000035882 stress Effects 0.000 description 17
- 238000009826 distribution Methods 0.000 description 5
- 230000008646 thermal stress Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000006698 induction Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
Landscapes
- Straightening Metal Sheet-Like Bodies (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明はコイル板材縁部の座屈除去方法と、その方法
の実施に用いる座屈除去装置とに関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for removing buckling from the edge of a coil plate, and a buckling removing device used to carry out the method.
（従来の技術）
繰り出したコイル板材をスリッターにて幅切断したとき
、コイル板材の両縁部もしくは一方の縁部近傍に座屈し
わの生ずることがある。これはコイル板材の残留応力が
幅切断により再配分されることによるものであるが、特
に冷延コイル板材の場合は初期残留応力が熱延コイル板
材に比べ大きいため、この傾向が顕著である。ところで
このように性状の悪いコイル板材は以降のロール成形を
困難なものとし、成形しても再び縁部近傍に座屈しわを
生ずることがある。このため従来においては、スリット
されたコイル板材をオフラインにてストレッチャーにか
け、縁部近傍の圧縮残留応力を軽減することにより座屈
（座屈しわ）の除去を行なうようにしている。(Prior Art) When a rolled-out coil plate material is cut into widths using a slitter, buckling wrinkles may occur near both edges or one edge of the coil plate material. This is because residual stress in the coil plate material is redistributed by width cutting, and this tendency is particularly noticeable in the case of cold-rolled coil plate materials because the initial residual stress is greater than that in hot-rolled coil plate materials. However, coil plate materials with such poor properties make subsequent roll forming difficult, and even after forming, buckling wrinkles may occur again near the edges. For this reason, conventionally, the slitted coil plate material is placed on a stretcher off-line to reduce the compressive residual stress near the edges, thereby removing buckling (buckling wrinkles).
（発明力（ｊｌ、ｊ、ｌ決しようとする問題点）しかし
ながら上記のようにコイル板材をストレッチャーにかけ
た場合、コイル板材を引張降伏させる程のストレッチを
かけることは、コイル扱材の寸法（板幅と板厚）によっ
て必要とする張力が大幅に異なり、設備が大規模となる
ため困難な場合が多いごとから、完全な座屈しわの除去
を行なえないことがある。このためコイル母材のスリッ
ト位置を調整することも行なわれているが、そうした場
合、材料歩留りが悪くなる等の不具合を伴うことになる
。(Inventive power (jl, j, l problem to be solved) However, when the coil plate material is placed on a stretcher as described above, it is difficult to stretch the coil plate material to the extent that it yields in tension due to the dimensions of the coil material ( It is often difficult to completely remove buckling wrinkles because the required tension varies greatly depending on the coil base material (plate width and plate thickness) and the equipment is large-scale. Adjustment of the slit position has also been carried out, but in such a case, problems such as poor material yield occur.
この発明は上記した従来の欠点を解決するためになされ
たものであって、その目的は、コイル板材縁部に発生し
た座屈を略完全に除去することのできるコイル板材縁部
の座屈除去方法及び座屈除去装置を提供することにある
。This invention has been made to solve the above-mentioned conventional drawbacks, and its purpose is to eliminate buckling at the edge of a coil plate by almost completely eliminating buckling that occurs at the edge of a coil plate. An object of the present invention is to provide a method and a buckling removal device.
（問題点を解決するための手段）
そこで第１発明のコイル板材縁部の座屈除去方法におい
ては、繰り出されたコイル板材に該コイル板材移動方向
の張力を作用させ、この張力を作用させた状態において
上記コイル板材の少なくとも一方の縁部を局部加熱する
ようにしである。(Means for solving the problem) Therefore, in the method for removing buckling of the edge of a coil plate according to the first invention, tension is applied to the unwound coil plate in the moving direction of the coil plate, and this tension is applied to the coil plate. In this state, at least one edge of the coil plate material is locally heated.
また第２発明のコイル板材縁部の座屈除去装置において
は、繰り出されたコイル板材に該コイル板材移動方向の
張力を作用させるだめの駆動ローラ及び従動ローラと、
上記両ローラ間において」−記コイル板材の少なくとも
一方の縁部を局部加熱するための加熱装置とを有する構
成としである。Further, in the coil plate edge buckling removal device of the second invention, a driving roller and a driven roller for applying tension in the moving direction of the coil plate material to the unwound coil plate material;
A heating device for locally heating at least one edge of the coil plate material is provided between the two rollers.
（作用）
上記のように繰り出されたコイル板材に張力を作用させ
て、その少なくとも一方の縁部を局部加熱するようにす
ると、コイル板材の上記縁部以外の他の部分を、作用さ
せた張力等と局部加熱による熱応力とによって引張降伏
させることが可能となる。したがって少ない張力でコイ
ル板材全体を伸張させて、その縁部近傍の座屈を略完全
に除去できることになる。また上記のようにして座屈を
除去した場合、スリット位置を調整するのと界なり、材
料歩留りが悪くなる等の不具合を伴うことがない。(Function) When tension is applied to the coil plate material that has been unwound as described above, and at least one edge thereof is locally heated, other parts of the coil plate material other than the above-mentioned edge part are heated by the applied tension. It becomes possible to cause tensile yielding by thermal stress caused by local heating. Therefore, the entire coil plate material can be stretched with a small amount of tension, and buckling near the edges can be almost completely eliminated. Further, when buckling is eliminated as described above, the slit position has to be adjusted, and problems such as poor material yield are not caused.
（実施例）
次にこの発明のコイル板材縁部の座屈除去方法及び座屈
除去装置の具体的な実施例につき、図面を参照しつつ詳
細に説明する。(Example) Next, specific examples of the buckling removal method and buckling removal device for the edge of a coil plate according to the present invention will be described in detail with reference to the drawings.
まず第１図にコイル板材縁部の座屈除去装置の一実施例
を示すが、図は溶接管製造用スリッタ・ラインのスリッ
ター直後の工程を示している。図において、Ａはコイル
母材、２は繰り出されたコイル母材Ａを幅切断するため
のスリッターであって、このスリッター２にて切断され
たコイル板材１の縁部に生じた座屈が本庄屈除去装置３
によって除去される。上記座屈除去装置３は、スリッタ
ー２にて切断されたコイル板材ｌに該コイル板材移動方
向の張力４を作用させるための駆動ローラ５．５及び従
動ローラ（ブレーキローラ）６．６と、上記両ローラ５
．６間においてコイル板材１の両縁部７．７を局部加熱
するための加熱装置８とを有して成り、上記駆動ローラ
５．５はコイル板材移動方向の材料出側に、上記従動ロ
ーラ６．６は材料入り側に、それぞれ配置されている。First, FIG. 1 shows an embodiment of a device for removing buckling from the edge of a coil plate, and the figure shows the process immediately after the slitter on a slitter line for manufacturing welded pipes. In the figure, A is a coil base material, and 2 is a slitter for cutting the width of the coil base material A that has been fed out. Bending removal device 3
removed by The buckling removal device 3 includes a driving roller 5.5 and a driven roller (brake roller) 6.6 for applying tension 4 in the moving direction of the coil plate material l to the coil plate material l cut by the slitter 2; Both rollers 5
．． The drive roller 5.5 has a heating device 8 for locally heating both edges 7.7 of the coil plate material 1 between the coil plate material 1, and the driving roller 5.5 is connected to the driven roller 6 on the material exit side in the moving direction of the coil plate material 1. .6 are respectively arranged on the material input side.
また上記加熱装置８は従動ローラ６．６の材料出側近傍
位置に配置されており、コイル板材ｌの縁部下面に対向
させられている。上記加熱装置８の一例としては、誘導
コイルや赤外線ヒータ、ガスバーす等を挙げることがで
きるが、この実施例における加熱装置８は、コイル板材
１０両縁部７．７に対応して例えば独立に制御可能な左
右一対の誘導コイルを有している。つまり一方の縁部７
のみの加熱も行なえる構造とされている。なお上記加熱
装置８はコイル板材１の上方に配置してもよいし、上方
と下方の両方に配置するようにしてもよい。なお図中、
駆動ローラ５．５を駆動するための駆動袋；Ｅ等は省略
している。Further, the heating device 8 is arranged near the material output side of the driven roller 6.6, and is opposed to the lower surface of the edge of the coil plate material l. Examples of the heating device 8 include an induction coil, an infrared heater, a gas bar, etc., but the heating device 8 in this embodiment is provided independently, for example, corresponding to both edges 7.7 of the coil plate material 10. It has a pair of controllable left and right induction coils. That is, one edge 7
The structure is such that it can also be heated. Note that the heating device 8 may be arranged above the coil plate material 1, or may be arranged both above and below. In addition, in the figure,
Driving bags for driving the driving rollers 5.5; E, etc. are omitted.
次に上記座屈除去装置３を用いてコイル板材１縁部の座
屈を除去する方法について述べる。繰り出したコイル板
材１をスリッター２にて幅切断すると、コイル板材１０
両縁部７．７もしくは一方の縁部７近傍に座屈しわ９の
生ずることがある。Next, a method for removing buckling at the edge of the coil plate material 1 using the buckling removing device 3 will be described. When the rolled-out coil plate material 1 is cut into widths with the slitter 2, the coil plate material 10 is
Buckling wrinkles 9 may occur near both edges 7.7 or one edge 7.
第１図は切断したコイル板材１の両縁部７．７に座屈し
わ９が生じた場合を示しており、切断直後のローラ５．
６の入側位置では、イに示すように両縁部７．７近傍に
圧縮残留応力（−）が、それ以外の部分つまり中央部】
０には引張残留応力（＋）がそれぞれ発生し、起伏の激
しい応力分布となっている。このような応力分布のとき
、口のように両縁部７．７には相対的に引張塑性歪が残
留しており、中央部１０にはほとんど塑性歪が発生して
いない。次に上記コイル板材１の両縁部７．７に発生し
た座屈しわ９．９を上記座屈除去装置３によって除去す
る訳であるが、この場合、先ず駆動ローラ５．５と従動
ローラ６．６とによって、該コイル板材１にコイル板材
移動方向の張力４を作用させる。そしてこの張力４を作
用させた状態において、コイル板材１の両縁部７．７を
加熱装置８により、例えば１００℃近辺まで局部加熱す
る。FIG. 1 shows a case where buckling wrinkles 9 are generated on both edges 7.7 of the cut coil plate material 1, and the roller 5.7 immediately after cutting is shown.
At the entrance position of 6, as shown in A, there is compressive residual stress (-) near both edges 7.7, and the other parts, that is, the center]
Tensile residual stress (+) is generated at each point 0, resulting in a stress distribution with severe ups and downs. In such a stress distribution, tensile plastic strain remains relatively at both edges 7.7 like the mouth, and almost no plastic strain occurs at the central portion 10. Next, the buckling wrinkles 9.9 generated on both edges 7.7 of the coil plate material 1 are removed by the buckling removal device 3. In this case, first, the driving roller 5.5 and the driven roller 6 are removed. .6, a tension force 4 in the direction of movement of the coil plate material 1 is applied to the coil plate material 1. With this tension 4 applied, both edges 7.7 of the coil plate material 1 are locally heated by the heating device 8 to, for example, around 100°C.
そうすると加熱を行なったハ位置では、両縁部７．７の
温度が中央部１０の温度よりも相対的に高くなり、また
二のように熱応力分布は、両縁部７．７で圧縮応力、中
央部１０で引張応力となる。したがって、初期応力、熱
応力、張力４を合計した応力分布は、ホのようになり、
中央部１０での引張応力が大となる結果、コイル板材１
の中央部１０が、降伏１１することになる。この結果、
コイル板材１全体が伸張して縁部７．７近傍の座屈しわ
９は略完全に除去されることとなる。つまり駆動ローラ
５．５を通過した直後のへ位置におけるコイル板材１の
塑性歪は両縁部７．７と中央部１０とで同程度となり、
応力分布はトのように、縁部７．７近傍の圧縮残留応力
と中央部ＩＯの引張残留応力とにはほとんど差のないな
だらかな状態となるのである。Then, at position C where heating is performed, the temperature at both edges 7.7 becomes relatively higher than the temperature at the center 10, and as shown in Figure 2, the thermal stress distribution changes to compressive stress at both edges 7.7. , a tensile stress occurs at the central portion 10. Therefore, the stress distribution that is the sum of initial stress, thermal stress, and tension 4 is as shown in E,
As a result of the increased tensile stress at the central portion 10, the coil plate material 1
The central portion 10 of will yield 11. As a result,
The entire coil plate material 1 is expanded and the buckling wrinkles 9 near the edge 7.7 are almost completely removed. In other words, the plastic strain of the coil plate material 1 at the bottom position immediately after passing the drive roller 5.5 is approximately the same at both edges 7.7 and the center portion 10.
The stress distribution becomes a gentle state with almost no difference between the compressive residual stress near the edge 7.7 and the tensile residual stress at the center IO, as shown in FIG.
また、この座屈除去装置を通過後、縁部７．７とその他
の部分の温度が冷却にともない均一化すると、縁部７．
７は収縮変形し、縁部７．７の圧縮残留応力はさらに低
減し、座屈除去効果が増大する。なお、縁部７．７の加
熱により、縁部にはさらに圧縮応力が増大するが、張力
が作用しているため縁部７．７０座屈範囲は拡大しない
。必要な張力は駆動ローラ５．５のパワー調整で得られ
る。ロールとコイル板材の摩擦条件や選択された駆動モ
ータ等の制約から、万一張力が不足するような場合に対
してはローラ５．６間に面外変形拘束ローラを追加する
と上記の効果が得られる。Further, after passing through this buckling remover, when the temperature of the edge 7.7 and other parts becomes uniform as it cools, the edge 7.7.
7 is contracted and deformed, the compressive residual stress at the edge 7.7 is further reduced, and the buckling removal effect is increased. Note that heating of the edge 7.7 further increases the compressive stress on the edge, but the buckling range of the edge 7.70 does not increase due to the tension acting thereon. The required tension is obtained by adjusting the power of the drive roller 5.5. In the unlikely event that the tension is insufficient due to the friction conditions between the roll and coil plate material, the selected drive motor, etc., the above effect can be obtained by adding an out-of-plane deformation restraining roller between rollers 5 and 6. It will be done.
第２図は繰り出したコイル板材１をスリッター２にて幅
切断した際に、コイル板材１の一方の縁部７近傍に座屈
しわ９の生じた場合を示している。FIG. 2 shows a case where buckling wrinkles 9 are generated in the vicinity of one edge 7 of the coil plate material 1 when the coil plate material 1 is cut across its width by the slitter 2.
この場合も上記と同様に、コイル板材１に駆動ローラ５
．５と従動ローラ６．６とによってコイル板材移動方向
の張力４を作用させ、加熱装置８によりコイル板材１の
局部加熱を行なう訳であるが、局部加熱を行なうに際し
ては、座屈しわ９の生じた方の縁部７のみ加熱するよう
にする。そうすると、符号ホにて示すように、コイル板
材１の一方の縁部７以外の他の部分が、作用させた張力
４と上記局部加熱による熱応力とによって降伏１１し、
その結果、コイル板材１全体が伸張して縁部７近傍の座
屈しわ９が略完全に除去されることになる。In this case, similarly to the above, the drive roller 5 is attached to the coil plate material 1.
．． 5 and driven roller 6.6 to apply tension 4 in the moving direction of the coil plate material, and local heating of the coil plate material 1 is performed by the heating device 8. Only the edge 7 on the opposite side is heated. Then, as shown by symbol E, the other parts of the coil plate material 1 other than one edge 7 yield 11 due to the applied tension 4 and the thermal stress caused by the local heating,
As a result, the entire coil plate material 1 is expanded, and the buckling wrinkles 9 near the edge 7 are almost completely removed.
なお上記実施例においては、コイル板材１をスリッター
２により切断した直後の工程を例に挙げて説明したが、
座屈を除去することのできる工程は上記工程に限られる
ものではなく、例えばスリットコイル板材１を繰り出し
た（つまりアンコイルした）直後の工程であってもよい
し、ロールフォーミング直前の工程であってもよい。ま
た、上記実施例ではスリットされたコイル板材を対象と
したが、圧延された状態で縁部にしわの発生しているコ
イル板材に対しても同様に本方法と装置を通用でき、上
記と同様な効果を奏することは当然である。In the above embodiment, the process immediately after cutting the coil plate material 1 by the slitter 2 was explained as an example.
The process in which buckling can be removed is not limited to the above process, and may be, for example, a process immediately after the slit coil plate material 1 is unrolled (that is, uncoiled), or a process immediately before roll forming. Good too. In addition, although the above embodiment deals with a slit coil plate material, the present method and apparatus can be similarly applied to a coil plate material that has wrinkles at the edges after being rolled. It goes without saying that it has some effects.
（発明の効果）
この発明においては、以上のように、繰り出されたコイ
ル板材に張力を作用させて、その少なくとも一方の縁部
を局部加熱するようにしであるので、コイル板材の上記
縁部以外の他の部分を、作用させた張力等と局部加熱に
よる熱応力とによって降伏させることができ、その結果
、少ない張力でコイル板材全体を伸張させて、その縁部
近傍の座屈を略完全に除去することができる。またスリ
ット位置を調整するのと異なり、座屈除去に際し、材料
歩留りが悪くなる等の不具合を伴うこともない。(Effects of the Invention) As described above, in this invention, tension is applied to the unwound coil plate material to locally heat at least one edge thereof, so that the parts other than the above-mentioned edge of the coil plate material are heated. The other parts of the coil plate can be made to yield by the applied tension and the thermal stress caused by local heating, and as a result, the entire coil plate material can be stretched with a small amount of tension, and the buckling near the edges can be almost completely eliminated. Can be removed. Further, unlike adjusting the slit position, removing buckling does not involve problems such as poor material yield.
図面はこの発明のコイル板材の座屈除去方法及び座屈除
去装置の一実施例を示し、第１図及び第２図はそれぞれ
溶接管製造用スリッタ・ラインの一工程の概略斜視図で
ある。
Ａ・・・コイル母材、■・・・コイル板材、３・・・座
屈除去装置、４・・・張力、５・・・駆動ローラ、６・
・・従動ローラ、７・・・縁部、８・・・加熱装置、９
・・・座屈しわ。The drawings show an embodiment of the buckling removal method and buckling removal apparatus for a coil plate material of the present invention, and FIGS. 1 and 2 are respectively schematic perspective views of one process of a slitter line for manufacturing welded pipes. A... Coil base material, ■... Coil plate material, 3... Buckling removal device, 4... Tension, 5... Drive roller, 6...
...Followed roller, 7...Edge, 8...Heating device, 9
...Buckling wrinkles.
Claims (1)
張力を作用させ、この張力を作用させた状態において上
記コイル板材の少なくとも一方の縁部を局部加熱するこ
とを特徴とするコイル板材縁部の座屈除去方法。 ２、繰り出されたコイル板材に該コイル板材移動方向の
張力を作用させるための駆動ローラ及び従動ローラと、
上記両ローラ間において上記コイル板材の少なくとも一
方の縁部を局部加熱するための加熱装置とを有すること
を特徴とするコイル板材縁部の座屈除去装置。[Claims] 1. A tension force is applied to the unwound coil plate material in the moving direction of the coil plate material, and at least one edge of the coil plate material is locally heated while this tension is applied. A method for removing buckling from the edge of a coil plate. 2. A drive roller and a driven roller for applying tension in the moving direction of the coil plate material to the unreeled coil plate material;
A device for removing buckling of an edge of a coil plate, comprising a heating device for locally heating at least one edge of the coil plate between the two rollers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23946586A JPS6393429A (en) | 1986-10-07 | 1986-10-07 | Method and device for removing buckling of edge part of coil plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23946586A JPS6393429A (en) | 1986-10-07 | 1986-10-07 | Method and device for removing buckling of edge part of coil plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6393429A true JPS6393429A (en) | 1988-04-23 |
Family
ID=17045164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23946586A Pending JPS6393429A (en) | 1986-10-07 | 1986-10-07 | Method and device for removing buckling of edge part of coil plate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6393429A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54223A (en) * | 1977-01-29 | 1979-01-05 | Tuchenhagen Otto | Piping opening*closing apparatus having leakage control and leakage hollow chamber purifiable |
-
1986
- 1986-10-07 JP JP23946586A patent/JPS6393429A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54223A (en) * | 1977-01-29 | 1979-01-05 | Tuchenhagen Otto | Piping opening*closing apparatus having leakage control and leakage hollow chamber purifiable |
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