JP4572685B2 - Twin roll casting machine - Google Patents

Twin roll casting machine Download PDF

Info

Publication number
JP4572685B2
JP4572685B2 JP2005007494A JP2005007494A JP4572685B2 JP 4572685 B2 JP4572685 B2 JP 4572685B2 JP 2005007494 A JP2005007494 A JP 2005007494A JP 2005007494 A JP2005007494 A JP 2005007494A JP 4572685 B2 JP4572685 B2 JP 4572685B2
Authority
JP
Japan
Prior art keywords
roll
mark
steel strip
cooling
casting machine
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 - Fee Related
Application number
JP2005007494A
Other languages
Japanese (ja)
Other versions
JP2006192479A (en
Inventor
一幸 佐藤
久彦 深瀬
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.)
IHI Corp
Original Assignee
IHI 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 IHI Corp filed Critical IHI Corp
Priority to JP2005007494A priority Critical patent/JP4572685B2/en
Publication of JP2006192479A publication Critical patent/JP2006192479A/en
Application granted granted Critical
Publication of JP4572685B2 publication Critical patent/JP4572685B2/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Continuous Casting (AREA)

Description

本発明は双ロール鋳造機に関するものである。   The present invention relates to a twin roll casting machine.

図３は双ロール鋳造機の一例を示すもので、水平に並べて配置した一対の冷却ロール１と、当該冷却ロール１に付帯する一対のサイド堰２とを備えている。   FIG. 3 shows an example of a twin roll casting machine, which includes a pair of cooling rolls 1 arranged horizontally and a pair of side weirs 2 attached to the cooling roll 1.

冷却ロール１は、その内部に冷却水が流通し、生産すべき鋼ストリップ３の板厚に応じてロール間隙Ｇを拡縮調整できるように構成されている。   The cooling roll 1 is configured such that cooling water circulates therein and the roll gap G can be adjusted in accordance with the thickness of the steel strip 3 to be produced.

冷却ロール１の回動方向及び速度は、各冷却ロール１の外周面が上側からロール間隙Ｇへ向かって等速で移動するように設定してある。   The rotation direction and speed of the cooling roll 1 are set so that the outer peripheral surface of each cooling roll 1 moves from the upper side toward the roll gap G at a constant speed.

一方のサイド堰２は、各冷却ロール１の一端に面接触し、他方のサイド堰２は、各冷却ロール１の他端に面接触している。   One side weir 2 is in surface contact with one end of each cooling roll 1, and the other side weir 2 is in surface contact with the other end of each cooling roll 1.

一対のサイド堰２の間には、溶湯供給ノズル４がロール間隙Ｇの真上に位置するように配置してあり、溶湯供給ノズル４から冷却ロール１とサイド堰２で四方を囲まれる空間へ溶鋼を供給すると溶湯溜まり５が形成される。   Between the pair of side weirs 2, the molten metal supply nozzle 4 is arranged so as to be positioned immediately above the roll gap G, and the space between the molten metal supply nozzle 4 and the cooling roll 1 and the side weir 2 is surrounded on all sides. When molten steel is supplied, a molten metal pool 5 is formed.

つまり、上記の溶湯溜まり５を形成させるとともに冷却水の流通により冷却ロール１を抜熱しながら回動させると、溶鋼が冷却ロール１外周面で凝固し、鋼ストリップ３がロール間隙Ｇの下方へ向けて送り出される。   That is, when the molten metal pool 5 is formed and the cooling roll 1 is rotated while removing the heat by circulation of the cooling water, the molten steel is solidified on the outer peripheral surface of the cooling roll 1 and the steel strip 3 is directed downward of the roll gap G. Sent out.

また、鋼ストリップの板幅方向の厚み分布を均等化するために、ロールクラウン修正用のテーパピストンを組み込んだ冷却ロールを用い、ロール間隙から送り出される鋼ストリップの板厚を計測し、その計測値に基づきロールクラウンを修正するようにした双ロール鋳造機も従前より提案されている（例えば、特許文献１参照）。
特開昭６０−２７４５８号公報 In order to equalize the thickness distribution of the steel strip in the plate width direction, a cooling roll incorporating a taper piston for correcting the roll crown was used to measure the thickness of the steel strip fed from the gap between the rolls. A twin roll casting machine in which the roll crown is corrected based on the above has also been proposed (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 60-27458

ところが特許文献１のものでは、ロール間隙と板厚計測地点が離れていることに起因して、冷却ロールに周方向に不均一な熱変形が発現した場合、現時点でのロール間隙の形状が鋼ストリップの板厚計測値に反映されなくなり、このため、鋼ストリップの板厚方向の厚み分布の均等化が困難になる。   However, in the case of Patent Document 1, when the roll gap and the plate thickness measurement point are separated from each other and the thermal deformation is uneven in the circumferential direction on the cooling roll, the current roll gap shape is steel. This is not reflected in the measured thickness value of the strip, which makes it difficult to equalize the thickness distribution of the steel strip in the thickness direction.

本発明は上述した実情に鑑みてなしたもので、ロール間隙を適切に推測できる双ロール鋳造機を提供することを目的としている。   The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a twin roll casting machine capable of appropriately estimating the roll gap.

上記目的を達成するため、本発明は、外周面で溶鋼を凝固させ且つロール間隙から鋼ストリップを送り出す一対の冷却ロールと、前記鋼ストリップの板幅方向の厚み分布を計測する非接触式センサと、冷却ロールが一回転するごとに鋼ストリップに対してマークを付すマーキング手段と、鋼ストリップに付されたマークを検知するマーク検知手段と、非接触型センサで得たストリップの板厚方向の厚み分布情報、並びにマーク検知手段から送信されるマーク通過情報により、冷却ロールの一回転あたりのロール間隙の変動を、マークの通過が確認されてから次にマークの通過が確認されるまでの間のストリップの板幅方向の厚み分布の変動を元に算出し且つデータとして記憶するロール間隙推定手段とを備えた構成とする。 In order to achieve the above object, the present invention provides a pair of cooling rolls for solidifying molten steel on the outer peripheral surface and feeding a steel strip from a roll gap, and a non-contact sensor for measuring a thickness distribution in the plate width direction of the steel strip. The marking means for marking the steel strip every time the cooling roll rotates, the mark detecting means for detecting the mark attached to the steel strip, and the thickness in the thickness direction of the strip obtained by the non-contact type sensor Based on the distribution information and the mark passage information transmitted from the mark detection means, the fluctuation of the roll gap per one rotation of the cooling roll is confirmed until the next passage of the mark is confirmed after the passage of the mark is confirmed. A roll gap estimating means is provided which calculates based on the variation of the thickness distribution in the plate width direction of the strip and stores it as data.

すなわち、非接触式センサにより連続的に得られる鋼ストリップの板幅方向の厚み分布と、マーク検知手段により検知した鋼ストリップのマークの通過とに基づき、冷却ロールの一回転あたりのロール間隙の変動を推測する。   That is, the fluctuation of the roll gap per rotation of the cooling roll based on the thickness distribution in the plate width direction of the steel strip continuously obtained by the non-contact sensor and the passage of the mark of the steel strip detected by the mark detection means. Guess.

本発明の双ロール鋳造機によれば、冷却ロールの一回転あたりのロール間隙の変動を適切に推測でき、これに基づきロールクラウンの修正や両ロールの位相調整を行なえば鋼ストリップの板幅方向の厚み分布の均等化を達成することが可能になる、という優れた効果を奏し得る。 According to the twin roll casting machine of the present invention, the fluctuation of the roll gap per one rotation of the cooling roll can be properly estimated, and if the roll crown is corrected and the phases of both rolls are adjusted based on this, the sheet width direction of the steel strip It is possible to achieve an excellent effect that it is possible to achieve uniform thickness distribution .

以下、本発明の実施の形態を図面に基づき説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１は本発明の双ロール鋳造機の実施の形態の一例であり、鋼ストリップ３を鋳造する一対の冷却ロール１と、前記鋼ストリップ３の板幅方向の厚み分布を計測する非接触式センサ６と、冷却ロール１が一回転するごとに鋼ストリップ３に対してマーク７を付すマーキング手段８と、非接触式センサ６の至近に配置したマーク検知手段９と、ロール間隙推定手段１０を備えている。 FIG. 1 shows an example of an embodiment of a twin roll casting machine according to the present invention. A pair of cooling rolls 1 for casting a steel strip 3 and a non-contact sensor for measuring the thickness distribution of the steel strip 3 in the plate width direction. 6, a marking means 8 for attaching a mark 7 to the steel strip 3 every time the cooling roll 1 rotates, a mark detection means 9 disposed in the vicinity of the non-contact sensor 6, and a roll gap estimation means 10. ing.

冷却ロール１には、サイド堰と溶湯供給ノズル（図示せず）が付帯し、冷却ロール１の間に溶鋼による溶湯溜まり５が形成される。   A side dam and a molten metal supply nozzle (not shown) are attached to the cooling roll 1, and a molten metal pool 5 made of molten steel is formed between the cooling rolls 1.

また、一方の冷却ロール１を弾性変形させるためにそのロールネック部には、シリンダなどのロール形状補正手段（図示せず）によって水平方向への押圧力Ｆが付与されるようにしてある。   Further, in order to elastically deform one of the cooling rolls 1, a horizontal pressing force F is applied to the roll neck portion by a roll shape correcting means (not shown) such as a cylinder.

更に、冷却ロール１のロール間隙Ｇから下方へ向けて送り出される鋼ストリップ３は、テーブルロール（図示せず）により横向きに案内され、ピンチロール１１を経て水平圧延機（図示せず）へ導かれる。   Further, the steel strip 3 fed downward from the roll gap G of the cooling roll 1 is guided laterally by a table roll (not shown), and is guided to a horizontal rolling mill (not shown) through a pinch roll 11. .

非接触式センサ６は、３個以上の板厚計測器を鋼ストリップ３の板幅方向に並べたもので、ピンチロール１１よりも鋼ストリップ３の移動方向上流側に配置してある。   The non-contact sensor 6 includes three or more plate thickness measuring devices arranged in the plate width direction of the steel strip 3, and is arranged upstream of the pinch roll 11 in the moving direction of the steel strip 3.

マーキング手段８は、一方の冷却ロール１の外周面ロールエッジ部付近に設けた凹状または凸状であって、当該冷却ロール１が一回転するごとに、マーキング手段８を凹状とした場合には、ロール間隙Ｇから送り出される鋼ストリップ３に凸状のマーク７が付され、マーキング手段８を凸状とした場合には、ロール間隙Ｇから送り出される鋼ストリップ３に凹状のマーク７が付される。   The marking means 8 is a concave shape or a convex shape provided near the outer peripheral surface roll edge portion of one cooling roll 1, and when the marking means 8 is concave every time the cooling roll 1 rotates, When the steel strip 3 delivered from the roll gap G is provided with a convex mark 7 and the marking means 8 is convex, the steel strip 3 delivered from the roll gap G is provided with a concave mark 7.

マーク検知手段９には、鋼ストリップ３に付されたマーク７を基準位置から鋼ストリップ３表面までの距離変動として検知する方式のもの、あるいは、鋼ストリップ３表面の形状が著しく変化している部分を画像処理によって検知する方式のものなどを採用する。   The mark detection means 9 has a method of detecting the mark 7 attached to the steel strip 3 as a variation in distance from the reference position to the surface of the steel strip 3, or a portion where the shape of the surface of the steel strip 3 is remarkably changed. A system that detects the image by image processing is adopted.

ロール間隙推定手段１０は、非接触式センサ６で得た鋼ストリップ３の板幅方向の厚み分布情報１２、並びにマーク検知手段９から送信されるマーク通過情報１３により、冷却ロール１の一回転あたりのロール間隙Ｇの変動を、マーク７の通過が確認されてから次にマーク７の通過が確認されるまでの間の鋼ストリップ３の板幅方向の厚み分布の変動を元に算出し、データとして記憶する。   The roll gap estimating means 10 is based on the thickness distribution information 12 in the plate width direction of the steel strip 3 obtained by the non-contact sensor 6 and the mark passage information 13 transmitted from the mark detecting means 9. The fluctuation of the roll gap G of the steel strip 3 is calculated based on the fluctuation of the thickness distribution in the plate width direction of the steel strip 3 from the time when the passage of the mark 7 is confirmed until the next passage of the mark 7 is confirmed. Remember as.

ロール間隙推定手段１０のデータは、鋼ストリップ３の長手方向の厚み分布の変動でもあるので、当該データに基づき、冷却ロール１の回転に伴うロール間隙Ｇの変動がなくなるように、ロール形状補正手段で冷却ロール１を弾性変形させれば、これ以後に送り出される鋼ストリップ３の長手方向と板幅方向の厚み部分を均等にすることができる。   Since the data of the roll gap estimating means 10 is also the fluctuation of the thickness distribution of the steel strip 3 in the longitudinal direction, the roll shape correcting means so that the fluctuation of the roll gap G accompanying the rotation of the cooling roll 1 is eliminated based on the data. Thus, if the cooling roll 1 is elastically deformed, the thickness portions in the longitudinal direction and the plate width direction of the steel strip 3 delivered thereafter can be made uniform.

ロール形状補正手段は、ロールベンディング方式のものだけではなく、テーパピストン方式のものを採用して、冷却ロール１が一回転する間に小刻みにロールクラウンの修正を行なうようにしてもよい。   The roll shape correction means may employ not only a roll bending type but also a taper piston type, and the roll crown may be corrected in small increments while the cooling roll 1 is rotated once.

また、鋼ストリップ３の長手方向の厚み分布に周期的な変動が継続して認められる場合には、次回の鋳造に先立ち、前記データに基づき、ロール間隙Ｇの変動が抑えられるように冷却ロール１の位相を調整すれば、ロール形状補正手段による冷却ロール１の弾性変形を小さくすることができる。   If periodic fluctuations are continuously observed in the thickness distribution in the longitudinal direction of the steel strip 3, the cooling roll 1 is controlled so that fluctuations in the roll gap G can be suppressed based on the data prior to the next casting. If the phase is adjusted, the elastic deformation of the cooling roll 1 by the roll shape correcting means can be reduced.

なお、本発明の双ロール鋳造機は、上述した実施の形態のみに限定されるものではなく、本発明の要旨を逸脱しない範囲において変更を加え得ることは勿論である。   In addition, the twin roll casting machine of this invention is not limited only to embodiment mentioned above, Of course, it can add a change in the range which does not deviate from the summary of this invention.

本発明の双ロール鋳造機は、様々な成分比率の鋼ストリップの製造に適用することができる。   The twin roll casting machine of the present invention can be applied to the production of steel strips having various component ratios.

本発明の双ロール鋳造機の実施の形態の一例を示す概念図である。It is a conceptual diagram which shows an example of embodiment of the twin roll casting machine of this invention. 従来の双ロール鋳造機の一例を示す概念図である。It is a conceptual diagram which shows an example of the conventional twin roll casting machine.

符号の説明Explanation of symbols

１ 冷却ロール
３ 鋼ストリップ
６ 非接触式センサ
７ マーク
８ マーキング手段
９ マーク検出手段
１０ ロール間隙推定手段
Ｇ ロール間隙 DESCRIPTION OF SYMBOLS 1 Cooling roll 3 Steel strip 6 Non-contact type sensor 7 Mark 8 Marking means 9 Mark detection means
10 roll gap estimation means
G roll gap

Claims (2)

外周面で溶鋼を凝固させ且つロール間隙から鋼ストリップを送り出す一対の冷却ロールと、前記鋼ストリップの板幅方向の厚み分布を計測する非接触式センサと、冷却ロールが一回転するごとに鋼ストリップに対してマークを付すマーキング手段と、鋼ストリップに付されたマークを検知するマーク検知手段と、非接触型センサで得たストリップの板厚方向の厚み分布情報、並びにマーク検知手段から送信されるマーク通過情報により、冷却ロールの一回転あたりのロール間隙の変動を、マークの通過が確認されてから次にマークの通過が確認されるまでの間のストリップの板幅方向の厚み分布の変動を元に算出し且つデータとして記憶するロール間隙推定手段とを備えていることを特徴とする双ロール鋳造機。 A pair of cooling rolls that solidify the molten steel on the outer peripheral surface and feed the steel strip from the gap between the rolls, a non-contact sensor that measures the thickness distribution in the plate width direction of the steel strip, and a steel strip each time the cooling roll rotates Is sent from the marking means for marking the mark, the mark detection means for detecting the mark attached to the steel strip, the thickness distribution information in the thickness direction of the strip obtained by the non-contact type sensor, and the mark detection means. By using the mark passage information, the fluctuation of the roll gap per rotation of the cooling roll can be changed, and the fluctuation of the thickness distribution in the strip width direction from the confirmation of the passage of the mark until the next passage of the mark A twin roll casting machine comprising roll gap estimation means that is originally calculated and stored as data. 冷却ロール外周面に凹状または凸状のマーキング手段を設けた請求項１に記載の双ロール鋳造機。   The twin roll casting machine according to claim 1, wherein concave or convex marking means is provided on the outer peripheral surface of the cooling roll.
JP2005007494A 2005-01-14 2005-01-14 Twin roll casting machine Expired - Fee Related JP4572685B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2005007494A JP4572685B2 (en) 2005-01-14 2005-01-14 Twin roll casting machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2005007494A JP4572685B2 (en) 2005-01-14 2005-01-14 Twin roll casting machine

Publications (2)

Publication Number Publication Date
JP2006192479A JP2006192479A (en) 2006-07-27
JP4572685B2 true JP4572685B2 (en) 2010-11-04

Family

ID=36798942

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2005007494A Expired - Fee Related JP4572685B2 (en) 2005-01-14 2005-01-14 Twin roll casting machine

Country Status (1)

Country Link
JP (1) JP4572685B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008213014A (en) * 2007-03-07 2008-09-18 Ihi Corp Method for controlling shape thickness of strip
US8607848B2 (en) * 2008-08-05 2013-12-17 Nucor Corporation Method for casting metal strip with dynamic crown control

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH034343U (en) * 1989-05-29 1991-01-17
JPH05285607A (en) * 1992-04-14 1993-11-02 Mitsubishi Heavy Ind Ltd Device for controlling roll shape in twin roll type continuous caster
JPH06134554A (en) * 1992-10-27 1994-05-17 Nippon Steel Corp Detection of position of cast strip in trip continuous caster and continuous caster providing cast strip positional detectioning function
JPH06154958A (en) * 1992-11-20 1994-06-03 Nippon Steel Corp Twin roll type continuous casting method
JPH08229639A (en) * 1994-10-28 1996-09-10 Usinor Sacilor Sa Method and equipment for molding thin metal article between two rolls
JPH08281388A (en) * 1995-04-07 1996-10-29 Usinor Sacilor Sa Method and device for adjusting roll crown of metal strip casting equipment
JP2000326004A (en) * 1999-05-21 2000-11-28 Nippon Steel Corp Method and device of controlling plate thickness for twin-drum type continuous casting equipment and recording medium

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH034343U (en) * 1989-05-29 1991-01-17
JPH05285607A (en) * 1992-04-14 1993-11-02 Mitsubishi Heavy Ind Ltd Device for controlling roll shape in twin roll type continuous caster
JPH06134554A (en) * 1992-10-27 1994-05-17 Nippon Steel Corp Detection of position of cast strip in trip continuous caster and continuous caster providing cast strip positional detectioning function
JPH06154958A (en) * 1992-11-20 1994-06-03 Nippon Steel Corp Twin roll type continuous casting method
JPH08229639A (en) * 1994-10-28 1996-09-10 Usinor Sacilor Sa Method and equipment for molding thin metal article between two rolls
JPH08281388A (en) * 1995-04-07 1996-10-29 Usinor Sacilor Sa Method and device for adjusting roll crown of metal strip casting equipment
JP2000326004A (en) * 1999-05-21 2000-11-28 Nippon Steel Corp Method and device of controlling plate thickness for twin-drum type continuous casting equipment and recording medium

Also Published As

Publication number Publication date
JP2006192479A (en) 2006-07-27

Similar Documents

Publication Publication Date Title
JP2008213014A (en) Method for controlling shape thickness of strip
CN103182492A (en) Method and device for positioning double-roller thin-strip continuous casting roller and adjusting roller gap
JP4572685B2 (en) Twin roll casting machine
JP2010221230A (en) Method of setting leveling of plate mill
WO2007129373A1 (en) Twin-roll casting machine
KR20080104186A (en) Twin-roll casting machine
US12097554B2 (en) Slab casting method
JP3866877B2 (en) Method and apparatus for controlling plate thickness in twin drum type continuous casting equipment, recording medium
JP3035587B2 (en) Continuous casting apparatus and continuous casting method
JP5762333B2 (en) Method for measuring the level in a continuous casting mold
KR101500102B1 (en) Apparatus and method of controlling wear of edgedam in twin roll strip casting process
JP4214069B2 (en) Rolling method and rolling apparatus for metal sheet
JP5476959B2 (en) Continuous casting method under light pressure
KR102388115B1 (en) Manufacturing method and control device of cast steel
JP3090183B2 (en) Austenitic stainless steel thin cast slab and method for producing the same
JP2007021522A (en) Continuous casting method
KR100689152B1 (en) Method for controlling strip thickness of twin-roll strip casting process
JP5066860B2 (en) Thick steel plate rolling method
EP1260290B1 (en) Method for detecting an at least partly bulging portion of an elongated material
JPH05220547A (en) Method for estimating plate crown in twin roll type strip continuous casting and continuous casting
JP6308178B2 (en) Hot slab width pressing method
KR101372681B1 (en) Method and system for reducing edge bulging in twin roll strip casting process
JP5029391B2 (en) Bloom casting slab continuous casting method
JP2010064117A (en) Method for manufacturing hot-rolled steel sheet
JP2023077650A (en) Twin drum type continuous casting device and thin slab production method

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20071129

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20091216

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20100112

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20100204

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20100323

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20100430

RD02 Notification of acceptance of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7422

Effective date: 20100430

A911 Transfer of reconsideration by examiner before appeal (zenchi)

Free format text: JAPANESE INTERMEDIATE CODE: A911

Effective date: 20100705

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20100720

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20100802

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130827

Year of fee payment: 3

LAPS Cancellation because of no payment of annual fees