JPH04172105A - Method for rolling vary thin hot strip - Google Patents

Method for rolling vary thin hot strip

Info

Publication number
JPH04172105A
JPH04172105A JP29943890A JP29943890A JPH04172105A JP H04172105 A JPH04172105 A JP H04172105A JP 29943890 A JP29943890 A JP 29943890A JP 29943890 A JP29943890 A JP 29943890A JP H04172105 A JPH04172105 A JP H04172105A
Authority
JP
Japan
Prior art keywords
rolling
strip
mill
slab
rolled
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
Application number
JP29943890A
Other languages
Japanese (ja)
Inventor
Teruo Sekiya
関谷 輝男
Tomoaki Kimura
智明 木村
Shosei Kamata
鎌田 正誠
Yoneaki Fujita
藤田 米章
Sadakazu Masuda
升田 貞和
Yukio Kimura
幸雄 木村
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.)
Hitachi Ltd
JFE Engineering Corp
Original Assignee
Hitachi Ltd
NKK Corp
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 Hitachi Ltd, NKK Corp, Nippon Kokan Ltd filed Critical Hitachi Ltd
Priority to JP29943890A priority Critical patent/JPH04172105A/en
Publication of JPH04172105A publication Critical patent/JPH04172105A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B1/00Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/22Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
    • B21B1/30Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process
    • B21B1/32Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work
    • B21B1/34Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work by hot-rolling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B15/00Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B15/0085Joining ends of material to continuous strip, bar or sheet

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)

Abstract

PURPOSE:To replace the off-gage part of a special material with a different material and to improve the yield of the special material by welding the different material to the front and rear ends of a slab of special material and enabling rolling into a very thin strip with a steckel mill. CONSTITUTION:The different material 21 is welded to the front and rear ends of the slab 20 of special material and this slab 22 is rolled by reversing rolling that the rear end of a strip 14 passes through a rolling mill 9 with the steckel mill 5 before the strip 14 is made into a prescribed thickness. Then, when the thickness of strip 14 is smaller than the prescribed thickness, it is rolled into the prescribed thickness of product by reversing rolling without pulling out the rear end of the strip 14 from a surface coiler on the uncoiling side while coiling the strip 14 with the furnace coiler.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、ステツケルミルを用いて特殊材をスラブから
極薄ストリップまで熱間圧延する熱間極薄ストリップの
圧延方法に関する。
DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method of hot rolling ultra-thin strip using a Steckel mill to hot-roll a special material from a slab to ultra-thin strip.

〔従来の技術〕[Conventional technology]

従来、特殊材はその必要量が少ないため、4ンゴツトよ
り分塊ミルにより特殊寸法のスラブに圧延され、タンデ
ム式のホットストリップミル設備にてその限度である1
 ta程度のコイルに圧延される。
Traditionally, special materials were rolled into slabs of special dimensions using a blooming mill from four ingots, as the required quantity was small, and a tandem hot strip mill equipment was used to roll the special materials into slabs of special dimensions.
It is rolled into a coil of about ta.

製品の必要厚みは更に薄いため、再圧延が必要であるが
、特殊材は主に難加工材であること、又は材質特性確保
の面より、再度高温にして圧延加工が必要であるものが
多い。このため、In1.  pubIicstion
 Nambet Wo、  89/11348号公報に
記載のように、コイルを再度加熱し、又は圧延前のスト
リップを加熱しながら圧延し、所定の厚みの製品を得て
いた。
The required thickness of the product is even thinner, so re-rolling is necessary, but special materials are mainly materials that are difficult to process, or in order to ensure material properties, many require re-rolling at high temperatures. . For this reason, In1. pubIiction
As described in Nambet Wo, Publication No. 89/11348, a product having a predetermined thickness was obtained by heating the coil again or rolling the strip while heating it before rolling.

また、特殊材を比較的小さな規模で製造するものとして
、例えば特開昭59−101205号公報に記載のよう
にステツケルミル設備があるが、ステツケルミル設備で
の圧延においては、圧延材の尻抜、噛込み等の通板、コ
イラーのマンドレルでの巻付等の作業性より、一般的に
は1.6m+a〜2日程度が限度とされている。
In addition, there is a Stetskel mill facility as described in JP-A No. 59-101205, which manufactures special materials on a relatively small scale. Generally speaking, the limit is 1.6m+a to 2 days due to the workability of threading the sheets, winding them around a coiler mandrel, etc.

なお、特殊材スラブの熱間圧延技術ではないが、製品圧
延材に異材を接合するものとして特開平1−11310
1号公報があり、冷間圧延機の運転再開時における通板
の容易化と製品歩留りの向上のため最終熱間圧延薄板材
にダミーコイルの薄板を接合している。
Although it is not a hot rolling technology for special material slabs, it is described in Japanese Patent Application Laid-Open No. 1-11310 as a technology for joining dissimilar materials to product rolled materials.
There is Publication No. 1, in which a thin plate of a dummy coil is bonded to the final hot-rolled thin plate material in order to facilitate sheet threading and improve product yield when the cold rolling mill restarts operation.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

以上のように、特殊材をスラブから極薄ストリップまで
圧延する熱間圧延技術において、タンデム式のホットス
トリップミル設備を使用する際は、必要厚みの最終製品
を得るのに特殊なミルで再圧延する必要があり、そのた
めの設備が必要である。
As mentioned above, in hot rolling technology that rolls special materials from slabs to ultra-thin strips, when tandem hot strip mill equipment is used, re-rolling with a special mill is necessary to obtain the final product with the required thickness. It is necessary to do so, and the equipment for that purpose is necessary.

また、ステツケルミル設備では、一般的には極薄ストリ
ップまで熱間圧延することは困難である。
Additionally, it is generally difficult to hot-roll ultra-thin strips using Steckel mill equipment.

特開平1−113101号公報は特殊材をスラブから極
薄ストリップまで圧延する熱間圧延技術を提供するもの
ではない。
JP-A-1-113101 does not provide a hot rolling technique for rolling special materials from slabs to ultra-thin strips.

本発明の第1の目的は、ステツケルミルでスラブから極
薄ストリップまでの熱間圧延を可能とし、かつその圧延
に当たって、特殊材の高歩留まり圧延を行える熱間極薄
ストリップの圧延方法を提供することである。
The first object of the present invention is to provide a hot rolling method for ultra-thin strips that enables hot rolling from slabs to ultra-thin strips in a Steckel mill, and that enables high-yield rolling of special materials during the rolling. It is.

本発明の第2の目的は、ステツケルミルで極薄ストリッ
プまで圧延したときに、ストリップ先後端のオフゲージ
部が次工程へ影響を与えることない熱間極薄ストリップ
の圧延方法を提供することである。
A second object of the present invention is to provide a method of hot rolling an ultra-thin strip in which the off-gauge portions at the leading and trailing ends of the strip do not affect the next process when the strip is rolled to an ultra-thin strip using a Steckel mill.

〔課題を解決するための手段〕[Means to solve the problem]

上記第1の目的は、圧延機の前後にファーネスコイラを
配置したステツケルミルで、特殊材をスラブより極薄ス
トリップまで熱間圧延する熱間極薄ストリップの圧延方
法において、特殊材スラブの先後端に異材を溶接し、こ
のスラブを前記ステツケルミルで、ストリップが所定の
厚みに達する前は、そのスラブをストリップの後端が圧
延機を抜けるレバーシング圧延により圧延し、ストリッ
プが所定の厚み以下になると、ストリップをファーネス
コイラで巻き取りながら、かつストリップの後端を巻戻
し側のファーネスコイラから抜き取ることのないレバー
シング圧延により、所定の製品厚みまで圧延することに
より達成される。
The first purpose is to improve the front and rear ends of special material slabs in a hot ultra-thin strip rolling method in which special material is hot-rolled from slabs to ultra-thin strips using a Stutskel mill with furnace coilers placed before and after the rolling mill. Dissimilar metals are welded to the slab, and before the strip reaches a predetermined thickness, the slab is rolled by reversing rolling in which the rear end of the strip passes through the rolling mill, and when the strip reaches a predetermined thickness or less, This is achieved by rolling the strip to a predetermined product thickness by reversing rolling while winding the strip in a furnace coiler and without removing the rear end of the strip from the unwinding furnace coiler.

上記第2の目的は、上記圧延方法において、ステツケル
ミル出側にシャを配置し、スラブを所定の製品厚みまで
圧延した後にストリップの先後端を前記シャでカットし
て前記異材の少なくとも一部を切除し、特殊材を主とし
たストリップを製品巻取リリールに巻き取ることにより
達成される。
The second object is to arrange the shear on the exit side of the Steckel mill in the rolling method, and after rolling the slab to a predetermined product thickness, cut the front and rear ends of the strip with the shear to remove at least a part of the foreign material. This is achieved by winding a strip made mainly of special material onto a product take-up reel.

好ましくは、上記圧延方法において、ステツケルミルの
上流側に加熱装置を配置し、上記スラブをこの加熱装置
で加熱した後、ステツケルミルで圧延する。
Preferably, in the above rolling method, a heating device is disposed upstream of the Steckel mill, and the slab is heated by the heating device and then rolled in the Steckel mill.

〔作用〕[Effect]

ステツケルミルの圧延では、前述したように一般的には
製品厚みは1.6mm〜2鰭程度が限度である。これ以
下に薄くするには、圧延温度を確保した上で、ストリッ
プの先後端をファーネスコイラのマンドレルに数巻残し
た状態でレバーシング圧延をする方法があり、この方法
によれば極薄ストリップまで圧延することが可能である
。しかしながら、この場合は、マン下しルに数巻き残し
たまま圧延するので、ストリップの先後端にオフゲージ
部が発生し、この部位は製品とならず歩留りを低下させ
る。また、シート状での圧延から巻取り圧延に移行する
ときは、ストリップをファーネスコイラに巻取る前にス
トリップ先後端のクロップカットがなされるが、このク
ロップカット分も含めると、歩留りは更に低下する。こ
の種の特殊材は非常に高価なものが多く、歩留りが低下
するき、経済的に大きな損失となる。
In the rolling process using a Steckel mill, as mentioned above, the product thickness is generally limited to about 1.6 mm to 2 fins. To make the strip thinner than this, there is a method of reversing rolling with the leading and trailing ends of the strip left on the mandrel of the furnace coiler after securing the rolling temperature. It is possible to roll up to However, in this case, since the strip is rolled with several turns remaining on the mandrel, an off-gauge portion occurs at the front and rear ends of the strip, and this portion does not become a product and reduces the yield. Additionally, when transitioning from rolling in sheet form to winding rolling, the leading and trailing ends of the strip are crop-cut before being wound into the furnace coiler, but if these crop cuts are included, the yield will further decrease. do. Many of these types of special materials are very expensive, resulting in a low yield and a large economic loss.

本発明は、特殊材スラブの先後端に異材、例えば普通鋼
を溶接し、このスラブをステツケルミルで圧延する。シ
ート状での圧延から巻取り圧延に移行するときはストリ
ップ先後端のクロップカットがなされるが、このクロッ
プは異材部分の一部をカットすることで特殊材の方は全
て確保される。
In the present invention, a different material, such as common steel, is welded to the front and rear ends of a special material slab, and this slab is rolled in a Steckel mill. When transitioning from sheet rolling to winding rolling, a crop cut is made at the leading and trailing ends of the strip, and by cutting a part of the dissimilar material, all of the special material is secured.

次に、ファーネスコイラを使用して、ストリップの後端
が圧延機を抜けるレバーシング圧延により所定厚みまで
巻取り圧延することにより、特殊材及び溶接された異材
も同一厚みに圧延される。ストリップが所定の厚み以下
になると、マンドレルにストリップの先後端を数巻き残
した状態でのファーネスコイラを用いたレバーシング圧
延で、所定の製品厚みまで圧延する。このとき、マンド
レルに巻付けられた数巻とマンドレルから圧延機ロール
までの距離分は未圧延部、即ち、上述のオフゲージ部と
なるが、本発明ではこの部位が異材部分に対応し、特殊
材にはオフゲージ部が形成されないので、特殊材の圧延
歩留りが画期的に向上する。
Next, the special material and the welded dissimilar materials are rolled to the same thickness by using a furnace coiler to take up and roll the strip to a predetermined thickness by reversing rolling in which the rear end of the strip passes through the rolling mill. When the strip has a predetermined thickness or less, it is rolled to a predetermined product thickness by reversing rolling using a furnace coiler with several turns left at the front and rear ends of the strip on the mandrel. At this time, the several turns wound around the mandrel and the distance from the mandrel to the rolling mill roll become the unrolled part, that is, the above-mentioned off-gauge part, but in the present invention, this part corresponds to the dissimilar material part, and the special material Since no off-gauge parts are formed in this method, the rolling yield of special materials is dramatically improved.

また、スラブを上述のように所定の製品厚みまで圧延し
た後は、ストリップ先後端の異材部分を少なくとも一部
を切除してリールに巻き取ることにより、異材部分(オ
フゲージ部)の次工程への影響が取り除かれる。
In addition, after the slab is rolled to a predetermined product thickness as described above, at least a portion of the dissimilar material portion at the front and rear ends of the strip is cut off and wound onto a reel, so that the dissimilar material portion (off-gauge portion) can be transferred to the next process. influence is removed.

〔実施例〕〔Example〕

以下、本発明の一実施例を第1図〜第3図により説明す
る。
An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

第1図は本実施例の圧延方法を実施する設備全体を示し
、溶接箇所1、加熱炉2、デスケーラ3、クロップシャ
4、ステツケルミル5、クロップシャ6、製品巻取リリ
ール7及び搬出テーブル8がこの順序で配置されている
。ステツケルミル5は圧延機、即ち、ミル9とその前後
に位置するファーネスコイラ10.11とを有している
FIG. 1 shows the entire equipment for carrying out the rolling method of this embodiment, which includes a welding point 1, a heating furnace 2, a descaler 3, a crop shear 4, a Stetskell mill 5, a crop shear 6, a product take-up reel 7, and a carry-out table 8. They are arranged in this order. The Steckel mill 5 has a rolling mill 9 and a furnace coiler 10.11 located before and after the mill 9.

溶接箇所1では、第2図に示すように、特殊材スラブ2
0の圧延方向先後端に異材21が溶接され、異材材のス
ラブ22とされる。異材21としては、例えば安価な普
通鋼が用いられる。スラブ22は加熱炉2に送られ、所
定の温度まで加熱される。加熱されたスラブ22はデス
ケーラ3で加熱時発生した1次スケールを除去された後
、ステツケルミル5に送られ、ミル9で所定の製品厚み
まで圧延される。その詳細は次のようである。
At welding point 1, as shown in Fig. 2, special material slab 2
A dissimilar material 21 is welded to the front and rear ends of 0 in the rolling direction to form a slab 22 of dissimilar material. As the foreign material 21, for example, inexpensive common steel is used. The slab 22 is sent to the heating furnace 2 and heated to a predetermined temperature. The heated slab 22 is removed by a descaler 3 to remove primary scale generated during heating, and then sent to a Steckel mill 5 and rolled by a mill 9 to a predetermined product thickness. The details are as follows.

まず、ミル9にて、ファーネスコイラ10.11に巻き
取ることなく所定厚みまでシート状でレバーシング圧延
する。このレバーシング圧延は一般的には20〜25日
厚程度まで行われる。次いで、所定厚みの圧延材はミル
入側のクロップシャ4にて先後端をクロップカットされ
、ミル9で圧延されながら後面側ファーネスコイラ11
のマンドレル13(第3図参照)に巻き取られ、ストリ
ップ後端がミル9を抜けたら逆パス圧延で前面側ファー
ネスコイラ10のマンドレル12(第3図参照)で巻き
ながら、圧延材後端がミル9を抜けるまで圧延される。
First, in the mill 9, the sheet is lever-rolled to a predetermined thickness without being wound up on the furnace coiler 10 or 11. This reversing rolling is generally performed to a thickness of about 20 to 25 days. Next, the rolled material having a predetermined thickness is crop-cut at the front and rear ends by a crop shear 4 on the input side of the mill, and while being rolled in a mill 9, it is passed through a furnace coiler 11 on the rear side.
When the rear end of the strip passes through the mill 9, the rear end of the rolled material is rolled up by the mandrel 12 (see Figure 3) of the front furnace coiler 10 in reverse pass rolling. is rolled until it passes through mill 9.

この圧延を繰り返し、圧延材の厚みが通常1.5〜2I
程度のストリップ14になったら、第3図に示すように
、後面のファーネスコイラ11のマンドレル13にスト
リップ14の後端を数巻き残した状態でパス方向を反転
させ、後面側ファーネスコイラ11のマンドレル13で
巻き取りながら圧延する。前面側ファーネスコイラ10
のマンドレル12上のストリップが数巻きになると、そ
れを残した状態でパス方向を反転させる。このようなパ
スを繰り返し、所定厚みの0.3mm程度の極薄ストリ
ップ厚みまで圧延する。最終パスの1パス前の圧延は後
面側ファーネスコイラ11のマンドレル13よりストリ
ップ14の後端が抜けるまで前面側ファーネスコイラ1
0のマンドレル12で巻取りながら圧延を行う。
This rolling is repeated until the thickness of the rolled material is usually 1.5~2I.
When the strip 14 has reached a certain level, as shown in FIG. Rolling is performed while winding with a mandrel 13. Front side furnace coiler 10
When the strip on the mandrel 12 becomes several turns, the pass direction is reversed while leaving it as it is. Such passes are repeated to roll the strip to a predetermined thickness of approximately 0.3 mm. One pass before the final pass, the front furnace coiler 1 rolls until the rear end of the strip 14 comes off the mandrel 13 of the rear furnace coiler 11.
Rolling is performed while winding with a mandrel 12 of 0.0 mm.

その後、最終のパスにてストリップ14をリール7方向
に搬送する。
Thereafter, the strip 14 is conveyed toward the reel 7 in the final pass.

ステツケルミル5より搬送されたストリップ14は、そ
の先端の未圧延部、即ち、オフゲージ部がシャ6でカッ
トされ、カットされたオフゲージ部はテーブル8にてラ
イン外に搬出され、残りの製品ストリップ14はリール
7で巻取られる。ストリップ後端のオフゲージ部もまた
シャ6でカットされ、テーブル8にて搬出される。この
ようにしてリール7に、所定厚みまで圧延された特殊材
の極薄製品が巻取られる。
The unrolled part at the tip of the strip 14 conveyed from the Steckel mill 5, that is, the off-gauge part, is cut by the shear 6, the cut off-gauge part is carried out of the line by the table 8, and the remaining product strip 14 is It is wound on reel 7. The off-gauge portion at the rear end of the strip is also cut by the shear 6 and carried out by the table 8. In this way, an ultra-thin product made of special material that has been rolled to a predetermined thickness is wound onto the reel 7.

なお、以上の実施例では、ステツケルミル5の両側にそ
れぞれシャ4,6を設けたが、出側のシャ6のみとし、
これを入側のシャ4と兼用させても良い。
In the above embodiment, the shafts 4 and 6 were provided on both sides of the Stetskell mill 5, but only the shaft 6 on the outlet side was provided.
This may also be used as the entrance side shaft 4.

また、シャ6でストリップ14の先後端をカットする際
、異材部分を全てカットせずに、一部を残し、またはオ
フゲージ部を全くカットせず、次工程でのリーダストリ
ップとして利用することもできる。
Furthermore, when cutting the front and rear ends of the strip 14 with the shear 6, it is also possible to leave a part of the dissimilar material part without cutting it entirely, or to use it as a leader strip in the next process without cutting the off-gauge part at all. .

以上のように、本実施例によれば、ステツケルミル5を
用いてスラブから極薄ストリップまで圧延できると共に
、スラブ22の先後端には異材21が溶接され、その部
分がオフゲージ部となってカットされるので、特殊材の
圧延歩留りが画期的に向上する。このことを具体的に例
示すると、次のようである。
As described above, according to this embodiment, it is possible to roll a slab to an ultra-thin strip using the Stetskell mill 5, and the dissimilar material 21 is welded to the front and rear ends of the slab 22, and that part becomes an off-gauge part and can be cut. This dramatically improves the rolling yield of special materials. A concrete example of this is as follows.

例えば、特殊材20のスラブの厚みを120目、スラブ
長を5000111+=!:して、これをそのまま圧延
する場合、ミル9とファーネス34919.11間を1
0000+nm、マンドレル径をφ800mmとすると
、未圧延長は両端で約28000+nmに及び、これに
クロップロス分を加えると、全体のロスはスラブ長に換
算して700 mm程度であり、スラブ全長5000+
nmの15%程度に相当する。本実施例でこの分を異材
溶接で当てるので、特殊材の歩留りが15%程度向上す
ることになる。
For example, the thickness of the slab of special material 20 is 120th, and the slab length is 5000111+=! : When rolling this as it is, the distance between mill 9 and furnace 34919.11 is 1.
If the mandrel diameter is φ800mm, the unpressurized extension will be about 28000+nm at both ends, and if the crop loss is added to this, the total loss will be about 700mm in terms of slab length, and the total slab length will be 5000+nm.
This corresponds to about 15% of nm. In this embodiment, this amount is applied by welding different materials, so the yield of special materials is improved by about 15%.

また、本実施例によれば、圧延したストリップ先後端の
異材部分の少なくとも一部をカットしてリール7に巻き
取るので、異材部分の次工程への影響が取り除かれる。
Furthermore, according to this embodiment, at least a portion of the dissimilar material portions at the front and rear ends of the rolled strip are cut and wound onto the reel 7, so that the influence of the dissimilar material portions on the next process is eliminated.

また、ステツケルミル圧延においては、しばしばストリ
ップ先後端の温度低下が発生し、特殊材の場合はその温
度低下により圧延不能になることも発生するが、本実施
例ではストリップ先後端に異材、例えば普通鋼が溶接さ
れているので、その部分に温度低下が生じても圧延不能
になる危険は回避され、安定した操業の実施が可能とな
る。
In addition, in Stetskell mill rolling, a temperature drop at the leading and trailing ends of the strip often occurs, and in the case of special materials, this temperature drop may make it impossible to roll the strip. Since the parts are welded, even if the temperature drops in that part, there is no risk of the rolling becoming impossible, and stable operation can be achieved.

〔発明の効果〕〔Effect of the invention〕

本発明によれば、特殊材をステツケルミルにて極薄スト
リップまで圧延可能にすると共に、高価な特殊材のオフ
ゲージ部が安価な異材に置き換えられるので、特殊材の
圧延歩留りが画期的に向上することにより経済性効果も
高く、更に、先後端の未圧延部が除去されるので、次工
程への影響のない製品を得ることができる。
According to the present invention, special materials can be rolled into ultra-thin strips using a Stetskell mill, and the off-gauge portion of expensive special materials can be replaced with inexpensive different materials, so the rolling yield of special materials can be dramatically improved. This has a high economical effect, and furthermore, since the unrolled parts at the front and rear ends are removed, a product can be obtained that does not affect the next process.

また、ステツケルミルでの圧延中、ストリップ先後端の
温度が低下したとしても、その部分に異材が溶接されて
いるので圧延不能になる危険は回避され、安定した操業
の実施が可能となる。
Furthermore, even if the temperature at the leading and trailing ends of the strip drops during rolling in the Stetskell mill, since the dissimilar material is welded to that part, the risk of the rolling becoming impossible is avoided, and stable operation is possible.

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

第1図は本発明の一実施例による圧延方法を実施する設
備全体を示す概略図であり、第2図は特殊材に異材を溶
接したスラブの斜視図であり、第3図はステツケルミル
の運転状態を示す図である。 ■・・・溶接箇所 2・・・加熱炉 5・・・ステツケルミル 6・・・シャ 7・・・製品巻取リリール 9・・・圧延機 10.11・・・ファーネスコイラ 12.13・・・マンドレル 出願人  株式会社 日立製作所 同   日本鋼管 株式会社 代理人  弁理士 春 日  譲 1・・・溶接箇所 2・・・加熱炉 5・・・ステツケルミル 6・・・シャ 7・・・製品巻取りリール 9・・・圧延機 10.11・・・ファーネスコイラ 1213・・・マンドレル
FIG. 1 is a schematic diagram showing the entire equipment for carrying out the rolling method according to an embodiment of the present invention, FIG. 2 is a perspective view of a slab made by welding a different material to a special material, and FIG. 3 is an operation of a Stetskell mill. It is a figure showing a state. ■...Welding location 2...Heating furnace 5...Stetskell mill 6...Shell 7...Product take-up reel 9...Rolling mill 10.11...Furnace coiler 12.13...・Mandrel Applicant: Hitachi, Ltd. Nippon Kokan Co., Ltd. Agent: Patent Attorney Haruhi Yuki 1...Welding location 2...Heating furnace 5...Stetskel mill 6...Shell 7...Product take-up reel 9...Rolling mill 10.11...Furnace coiler 1213...Mandrel

Claims (3)

【特許請求の範囲】[Claims] (1)圧延機の前後にファーネスコイラを配置したステ
ッケルミルで、特殊材をスラブより極薄ストリップまで
熱間圧延する熱間極薄ストリップの圧延方法において、 特殊材スラブの先後端に異材を溶接し、このスラブを前
記ステッケルミルで、ストリップが所定の厚みに達する
前は、前記スラブをストリップの後端が前記圧延機を抜
けるレバーシング圧延により圧延し、ストリップが所定
の厚み以下になると、ストリップを前記ファーネスコイ
ラで巻き取りながら、かつストリップの後端を巻戻し側
のファーネスコイラから抜き取ることのないレバーシン
グ圧延により、所定の製品厚みまで圧延することを特徴
とする圧延方法。
(1) In the hot ultra-thin strip rolling method in which special material is hot-rolled from a slab to an ultra-thin strip using a Steckel mill with furnace coilers placed before and after the rolling mill, dissimilar materials are welded to the front and rear ends of the special material slab. The slab is rolled in the Steckel mill by reversing rolling in which the rear end of the strip passes through the rolling mill before the strip reaches a predetermined thickness, and when the strip reaches a predetermined thickness or less, the slab is rolled. A rolling method comprising rolling the strip to a predetermined product thickness by reversing rolling while winding the strip in the furnace coiler and without removing the rear end of the strip from the furnace coiler on the unwinding side.
(2)請求項1記載の熱間極薄ストリップの圧延方法に
おいて、前記ステッケルミル出側にシャを配置し、前記
スラブを所定の製品厚みまで圧延した後、ストリップの
先後端を前記シャでカットして前記異材の少なくとも一
部を切除し、特殊材を主としたストリップのみを製品巻
取りリールに巻き取ることを特徴とする圧延方法。
(2) In the method for hot rolling ultra-thin strip according to claim 1, a shear is disposed on the exit side of the Steckel mill, and after rolling the slab to a predetermined product thickness, the front and rear ends of the strip are cut by the shear. A rolling method characterized in that at least a part of the foreign material is cut off using a rolling process, and only a strip mainly made of the special material is wound onto a product take-up reel.
(3)請求項1記載の熱間極薄ストリップの圧延方法に
おいて、前記ステッケルミルの上流側に加熱装置を配置
し、前記スラブをこの加熱装置で加熱した後、前記ステ
ッケルミルで圧延することを特徴とする圧延方法。
(3) The hot ultra-thin strip rolling method according to claim 1, wherein a heating device is disposed upstream of the Steckel mill, and the slab is heated by the heating device and then rolled by the Steckel mill. rolling method.
JP29943890A 1990-11-05 1990-11-05 Method for rolling vary thin hot strip Pending JPH04172105A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29943890A JPH04172105A (en) 1990-11-05 1990-11-05 Method for rolling vary thin hot strip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29943890A JPH04172105A (en) 1990-11-05 1990-11-05 Method for rolling vary thin hot strip

Publications (1)

Publication Number Publication Date
JPH04172105A true JPH04172105A (en) 1992-06-19

Family

ID=17872576

Family Applications (1)

Application Number Title Priority Date Filing Date
JP29943890A Pending JPH04172105A (en) 1990-11-05 1990-11-05 Method for rolling vary thin hot strip

Country Status (1)

Country Link
JP (1) JPH04172105A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006334647A (en) * 2005-06-03 2006-12-14 Jp Steel Plantech Co Rolling method and rolling equipment
WO2008040606A1 (en) * 2006-10-02 2008-04-10 Siemens Aktiengesellschaft Method for operating a steckel mill
WO2008116367A1 (en) * 2007-03-28 2008-10-02 Shanxi Taigang Stainless Steel Co., Ltd. Method and system for welding a guiding strip with stainless steel coil
JP2008296268A (en) * 2007-06-01 2008-12-11 Nippon Yakin Kogyo Co Ltd Hot-rolled stainless steel strip, and method of manufacturing hot-rolled stainless steel strip for continuous annealing and pickling line
CN101979170A (en) * 2010-11-19 2011-02-23 无锡嘉联不锈钢有限公司 Method for producing stainless steel belt of glasses frame
CN114130825A (en) * 2021-11-30 2022-03-04 攀钢集团攀枝花钢钒有限公司 Method for removing sleeve of extremely thin material winding core and winding

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006334647A (en) * 2005-06-03 2006-12-14 Jp Steel Plantech Co Rolling method and rolling equipment
WO2008040606A1 (en) * 2006-10-02 2008-04-10 Siemens Aktiengesellschaft Method for operating a steckel mill
WO2008116367A1 (en) * 2007-03-28 2008-10-02 Shanxi Taigang Stainless Steel Co., Ltd. Method and system for welding a guiding strip with stainless steel coil
JP2008296268A (en) * 2007-06-01 2008-12-11 Nippon Yakin Kogyo Co Ltd Hot-rolled stainless steel strip, and method of manufacturing hot-rolled stainless steel strip for continuous annealing and pickling line
CN101979170A (en) * 2010-11-19 2011-02-23 无锡嘉联不锈钢有限公司 Method for producing stainless steel belt of glasses frame
CN114130825A (en) * 2021-11-30 2022-03-04 攀钢集团攀枝花钢钒有限公司 Method for removing sleeve of extremely thin material winding core and winding
CN114130825B (en) * 2021-11-30 2023-11-17 攀钢集团攀枝花钢钒有限公司 Method for removing sleeve from ultrathin material winding core and winding

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