JP2544459B2 - Roll shape controller for twin roll type continuous casting machine - Google Patents
Roll shape controller for twin roll type continuous casting machineInfo
- Publication number
- JP2544459B2 JP2544459B2 JP63254951A JP25495188A JP2544459B2 JP 2544459 B2 JP2544459 B2 JP 2544459B2 JP 63254951 A JP63254951 A JP 63254951A JP 25495188 A JP25495188 A JP 25495188A JP 2544459 B2 JP2544459 B2 JP 2544459B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- roll
- plate shape
- continuous casting
- cooled
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
- B22D11/0637—Accessories therefor
- B22D11/068—Accessories therefor for cooling the cast product during its passage through the mould surfaces
- B22D11/0682—Accessories therefor for cooling the cast product during its passage through the mould surfaces by cooling the casting wheel
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、水冷ロールの熱負荷による形状の変化を制
御するようにした連続鋳造機のロール形状制御装置に関
する。Description: TECHNICAL FIELD The present invention relates to a roll shape control device for a continuous casting machine, which controls a change in shape of a water-cooled roll due to a heat load.
第５図は、薄板連続鋳造機の一例である従来の双ロー
ル式薄板連続鋳造機の要部を示す正面図、第６図は、一
方の水冷ロールを破断した要部平面図である。FIG. 5 is a front view showing an essential part of a conventional twin roll type thin plate continuous casting machine which is an example of a thin plate continuous casting machine, and FIG. 6 is a plan view of an essential part in which one of the water cooling rolls is broken.
第５図及び第６図において、矢印で示すように回転す
る一対の水冷ロール01と、一対のサイドダム02とから成
る鋳型部に溶鋼Ｒを連続して供給して水冷ロール01の外
周面によって冷却凝固させ、薄帯鋼Ｗを連続鋳造する。In FIG. 5 and FIG. 6, molten steel R is continuously supplied to a casting mold part consisting of a pair of water cooling rolls 01 rotating as indicated by arrows and a pair of side dams 02, and cooled by the outer peripheral surface of the water cooling rolls 01. Solidify and continuously cast thin strip steel W.
水冷ロール01の内部には、その軸心に設けられた給水
口01a及び排水口01eと、その外周面全周に沿って列設さ
れた多数の水冷路01cと、各々の水冷路01cと給水口01a
及び排水口01eとを連結する給水路01b及び排水路01dと
が内設されている。そして、給水口01aから水冷路01cへ
冷却水を供給して、水冷ロール１の外周面を冷却し、溶
鋼Ｒの潜熱を吸収して排水口01eから排水する。Inside the water-cooling roll 01, a water supply port 01a and a drainage port 01e provided in the axis thereof, a large number of water-cooling channels 01c arranged in a row along the entire outer peripheral surface thereof, and each water-cooling channel 01c and water supply. Mouth 01a
A water supply channel 01b and a drainage channel 01d which connect the water discharge port 01e and the drainage channel 01e are internally provided. Then, the cooling water is supplied from the water supply port 01a to the water cooling path 01c to cool the outer peripheral surface of the water cooling roll 1, absorb the latent heat of the molten steel R, and discharge the water from the drain port 01e.
上記従来の双ロール式連続鋳造機では、鋳型部に溶鋼
Ｒを供給して凝固させると、その潜熱によって水冷ロー
ル１の外周面が熱負荷を受けてそのロール幅Ｌが膨張
し、ロール幅Ｌのそれぞれ約30％の長さに相当する両端
部ｌが、第６図に２点鎖線で示すように、例えば、150
μｍのような変形量δで変形する。In the above conventional twin roll type continuous casting machine, when the molten steel R is supplied to the casting mold and solidified, the outer peripheral surface of the water-cooled roll 1 receives a heat load due to its latent heat and the roll width L expands, and the roll width L The ends l corresponding to about 30% of the length of each are, for example, 150 as shown by the two-dot chain line in FIG.
It deforms with a deformation amount δ such as μm.
従って、双方の水冷ロール１の間隔も両端部が中央部
よりも２・δだけ広くなり、鋳造される薄帯鋼Ｗの両端
部も２・δだけ厚くなってその板形状が悪化する。Therefore, the distance between both water-cooled rolls 1 is wider at both end portions than in the central portion by 2 · δ, and both end portions of the thin strip steel W to be cast are also thickened by 2 · δ, which deteriorates the plate shape.
本発明は上記問題点を解決するために提案されたもの
で、水冷ロールの鋳造時の熱負荷による変形を制御し、
板形状の良好な鋳片を連続鋳造する装置を提供しようと
するものである。The present invention has been proposed to solve the above problems, by controlling the deformation due to heat load during casting of the water-cooled roll,
An object of the present invention is to provide a device for continuously casting a slab having a good plate shape.
本発明は、相反する方向に回転する一対の水冷ロール
によって形成される鋳型部に溶融金属を連続的に供給
し、板状に凝固させた鋳片を連続鋳造する双ロール式連
続鋳造機において、上記水冷ロールの幅方向両端部にそ
れぞれ内設された水冷ロール加熱手段と、上記薄鋳片の
板厚を計測する板形状検出手段と、同板形状検出手段の
信号を受け上記各々の水冷ロール加熱手段の発熱量を制
御する加熱制御手段とから成ることを特徴とする。The present invention continuously supplies the molten metal to the mold portion formed by a pair of water-cooled rolls rotating in opposite directions, in a twin roll type continuous casting machine for continuously casting the slab solidified in a plate shape, Water-cooling roll heating means respectively installed inside both ends in the width direction of the water-cooling roll, plate shape detecting means for measuring the plate thickness of the thin cast piece, and each of the water-cooling rolls receiving a signal from the plate shape detecting means It is characterized by comprising heating control means for controlling the amount of heat generated by the heating means.
溶融金属を鋳型部に連続供給して鋳片を連続鋳造する
と、水冷ロールの外周面が溶融金属によって熱負荷を受
け、双方のロールの両端部間隔が広くなって薄鋳片の両
端部の板厚が増大し、その板形状が悪化するので、本発
明では、板形状検出手段によって、前記薄鋳片の中央部
板厚と両端部板厚との差を検出して、加熱制御手段に信
号を送信する。When the molten metal is continuously supplied to the mold part to continuously cast the slab, the outer peripheral surface of the water-cooled roll is subjected to a heat load by the molten metal, and the distance between both ends of the rolls becomes wide, and the plates of both ends of the thin slab are expanded. Since the thickness increases and the plate shape deteriorates, in the present invention, the plate shape detecting means detects the difference between the central part plate thickness and both end part plate thicknesses of the thin cast piece, and signals the heating control means. To send.
加熱制御手段は、板形状検出手段からの信号に従って
水冷ロール加熱手段を制御し、水冷ロールの両端部を加
熱して膨張させてその形状を保償し、双方のロールの全
幅における間隔を等しくする。The heating control means controls the water-cooled roll heating means in accordance with the signal from the plate shape detection means, heats and expands both ends of the water-cooled roll to ensure its shape, and equalizes the intervals in the entire width of both rolls. .
鋳片の板形状は鋳造中に刻々と変化するので、板形状
検出手段によって常時その板形状を検出して加熱制御手
段に送信している。加熱制御手段は、その値によって水
冷ロール加熱手段の発熱量を調節し、水冷ロールの両端
部の熱膨張量を調節してその形状を制御し、薄鋳片の板
形状を良好に保持する。Since the plate shape of the slab changes every moment during casting, the plate shape detecting means constantly detects the plate shape and sends it to the heating control means. The heating control means adjusts the amount of heat generated by the water-cooled roll heating means according to the value, controls the shape of the water-cooled roll by adjusting the amount of thermal expansion at both ends of the water-cooled roll, and maintains the plate shape of the thin cast piece satisfactorily.
本発明の一実施例を第１図ないし第４図によって説明
する。One embodiment of the present invention will be described with reference to FIGS.
第１図は本実施例の要部の破断平面図、第２図は本実
施例の要部破断正面図、第３図及び第４図は本実施例の
水冷ロールの熱変形を示す説明図である。FIG. 1 is a broken plan view of a main part of the present embodiment, FIG. 2 is a front view of a main part of the present embodiment broken, and FIGS. 3 and 4 are explanatory views showing thermal deformation of a water-cooled roll of the present embodiment. Is.
第１図及び第２図において、１は一対の水冷ロールで
あり、その内部には、給水口1aと排水口1eと、多数の給
水路1b、水冷ロールの外周面の付近に延びる水冷路1c、
排水路1dが設けられている。そして、その両端部にはそ
の全周にわたってヒータブロック３がそれぞれ内設され
ている。２は一対のサイドダムであり、回転する水冷ロ
ール１の両端面と摺動するように配置され、双方の水冷
ロール１とで鋳型部を形成している。４は、例えばγ線
を利用して薄帯鋼Ｗの全幅にわたる板厚を計測する公知
の板形状検出器であり、薄帯鋼Ｗの通板路に配置されて
いる。５は公知の電流制御器であり、各々のヒータブロ
ック３と、板形状検出器４に接続されている。In FIGS. 1 and 2, reference numeral 1 denotes a pair of water-cooling rolls, inside of which a water supply port 1a, a drainage port 1e, a large number of water supply channels 1b, and a water cooling channel 1c extending near the outer peripheral surface of the water-cooling rolls. ,
A drainage channel 1d is provided. The heater blocks 3 are internally provided on both ends of the heater block 3 along the entire circumference thereof. Reference numeral 2 denotes a pair of side dams, which are arranged so as to slide on both end surfaces of the rotating water-cooling roll 1, and the water-cooling rolls 1 form a mold part. Reference numeral 4 is a known plate shape detector that measures the plate thickness over the entire width of the thin strip steel W by using, for example, γ-rays, and is arranged in the passage of the thin strip steel W. Reference numeral 5 is a known current controller, which is connected to each heater block 3 and the plate shape detector 4.
各水冷ロール１の外周面の熱負荷が無負荷の状態で、
電流制御器５から各々のヒータブロック３へ所定の電流
値で送電してヒータブロック３を加熱して膨張させる
と、第３図に２点鎖線で示すように水冷ロール１の全幅
Ｌの約30％の幅の両端部ｌが外周方向に変形し、双方こ
の水冷ロール１の間隔（鋳型部）は２・δ０だけ狭くな
る。With no heat load on the outer peripheral surface of each water-cooled roll 1,
When the heater block 3 is heated and expanded from the current controller 5 to each heater block 3 at a predetermined current value, as shown by the two-dot chain line in FIG. %, Both ends 1 are deformed in the outer peripheral direction, and the space between the water-cooled rolls 1 (mold part) is narrowed by 2 · δ 0 .
水例ロール１の両端部を加熱しないで前記鋳造型部に
溶鋼Ｒを供給して薄帯鋼Ｗを連続鋳造すると、第４図に
示すように、双方の水冷ロール１の鋳型部は熱負荷によ
って変形し、上に述べたように、薄帯鋼Ｗの全幅Ｌの約
30％に相当する両端部は、最大板厚増加量２・δだけ厚
くなり、その板形状を悪化させる。Water example When molten steel R is supplied to the casting mold part without continuously heating both ends of the roll 1 to continuously cast the thin steel strip W, as shown in FIG. As described above, the total width L of the thin strip steel W is about
Both ends corresponding to 30% become thicker by the maximum plate thickness increase amount 2 · δ, which deteriorates the plate shape.
そこで本実施例では、板形状検出器４によってその全
幅Ｌにおける最小板厚と最大板厚の差、すなわち２・δ
を検出して電流制御器５に送信する。電流制御器５は、
その送信値を電流値に変換し、ヒータブロック３へ送電
する電流値を制御して双方の水冷ロール１の両端面を２
点鎖線で示すように検出値２・δの1/2に相当する値で
あるδだけ膨張させて前記変形を補償し、鋳型部の間隙
をその全幅Ｌにわたって均一にすることにより、薄帯鋼
Ｗの板形状を良好にする。Therefore, in the present embodiment, the difference between the minimum plate thickness and the maximum plate thickness in the entire width L of the plate shape detector 4, that is, 2 · δ
Is detected and transmitted to the current controller 5. The current controller 5 is
The transmission value is converted into a current value, the current value transmitted to the heater block 3 is controlled, and both end faces of both water-cooled rolls 1 are moved to 2
As indicated by the dotted chain line, the deformation is compensated by expanding by δ, which is a value corresponding to 1/2 of the detected value 2 · δ, and the gap of the mold part is made uniform over the entire width L of the thin strip steel. Make the plate shape of W good.
薄帯鋼Ｗの連続鋳造中は、板形状検出器４によって常
時その板形状を監視してその検出値を電流制御器５に送
信し、電流制御器５はその受信値の変動によってヒータ
ブロック３に送電する電流値を制御し、常に良好な板形
状を保持する。During the continuous casting of the thin steel strip W, the plate shape detector 4 constantly monitors the plate shape and sends the detected value to the current controller 5. The current controller 5 changes the received value and the heater block 3 It controls the value of the electric current that is transmitted to, and always maintains a good plate shape.
なお、上記実施例では、水冷ロールは電熱式のヒータ
ブロックによってその両端部を加熱するようにしている
が、本発明では、電熱式以外の流体等による水冷ロール
加熱装置を用いることができる。In the above embodiment, the water-cooled roll heats both ends of the water-cooled roll by the heater block of the electric heating type, but in the present invention, a water-cooling roll heating device using a fluid other than the electric heating type can be used.
本発明は、鋳造条件によって変化する鋳片の板形を板
形状状検出手段によって検出し、前記板形状の変化すな
わち水冷ロール外周面の熱負荷による変形に対応して水
冷ロール加熱手段の発熱量を加熱制御手段によって制御
し、水冷ロールの両端部の熱膨張を調節して鋳造時の水
冷ロールの間隔をその全幅にわたって均一に制御するこ
とにより、連続鋳造される鋳片の幅方向における板厚を
均一にしてその板形状を良好にすることができる。The present invention detects a plate shape of a slab that changes according to casting conditions by a plate shape detecting means, and responds to the change in the plate shape, that is, the deformation due to the heat load of the outer surface of the water cooling roll, the heat generation amount of the water cooling roll heating means By controlling the heating control means, by adjusting the thermal expansion of both ends of the water-cooled roll to uniformly control the interval of the water-cooled roll during casting over its entire width, the plate thickness in the width direction of the continuously cast slab. Can be made uniform and the plate shape can be improved.
【図面の簡単な説明】 第１図は本発明の一実施例とての双ロール式薄板連続鋳
造機の要部を示す一部破断平面図、第２図は同一部破断
正面図、第３図及び第４図は同実施例の水冷ロールの熱
変形を示す説明図、第５図は従来の双ロール式薄板連続
鋳造機の一例の要部を示す正面図、第６図は同従来の双
ロール式連続鋳造機の一部破断平面図である。 １……水冷ロール、２……サイドダム、 ３……ヒータブロック、３……板形状検出器、 ５……電流制御器、Ｒ……溶鋼、 Ｗ……薄帯鋼。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially cutaway plan view showing an essential part of a twin roll type thin plate continuous casting machine according to an embodiment of the present invention, FIG. 2 is a cutaway front view of the same portion, and FIG. FIG. 4 and FIG. 4 are explanatory views showing thermal deformation of the water-cooled roll of the embodiment, FIG. 5 is a front view showing an essential part of an example of a conventional twin roll type thin plate continuous casting machine, and FIG. It is a partial fracture top view of a twin roll type continuous casting machine. 1 ... Water-cooled roll, 2 ... Side dam, 3 ... Heater block, 3 ... Plate shape detector, 5 ... Current controller, R ... Molten steel, W ... Thin strip steel.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 佐々木 邦政 広島県広島市西区観音新町４丁目６番22 号 三菱重工業株式会社広島製作所内 (72)発明者 平田 勝美 広島県広島市西区観音新町４丁目６番22 号 三菱重工業株式会社広島製作所内 (56)参考文献 特開 昭62−110841（ＪＰ，Ａ) 実開 平１−165149（ＪＰ，Ｕ) 実公 昭60−13525（ＪＰ，Ｙ２) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kunimasa Sasaki 4-6-22 Kannon Shinmachi, Nishi-ku, Hiroshima City, Hiroshima Prefecture Mitsubishi Heavy Industries Ltd. Hiroshima Works (72) Katsumi Hirata 4-chome, Kannon Shinmachi, Nishi-ku, Hiroshima Prefecture 6-22 No. 22 in Mitsubishi Heavy Industries, Ltd. Hiroshima Works (56) Reference JP 62-110841 (JP, A) Actual Kaihei 1-165149 (JP, U) Actual public 60-13525 (JP, Y2)
Claims (1)
によって形成される鋳型部に溶融金属を連続的に供給
し、板状に凝固させた鋳片を連続鋳造する双ロール式連
続鋳造機において、上記水冷ロールの幅方向の両端部に
それぞれ内設された水冷ロール加熱手段と、上記薄鋳片
の板厚を計測する板形状検出手段と、同板形状検出手段
の信号を受け上記各々の水冷ロール加熱手段の発熱量を
制御する加熱制御手段とから成ることを特徴とする双ロ
ール式連続鋳造機のロール形状制御装置。1. A twin roll type continuous casting machine for continuously casting molten metal into a mold portion formed by a pair of water-cooled rolls rotating in opposite directions to continuously cast a slab solidified into a plate shape. , Water-cooled roll heating means respectively installed in both ends in the width direction of the water-cooled roll, a plate shape detection means for measuring the plate thickness of the thin cast piece, receiving the signal of the plate shape detection means of each of the above A roll shape control device for a twin roll type continuous casting machine, comprising: a heating control means for controlling the heat generation amount of the water-cooled roll heating means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63254951A JP2544459B2 (en) | 1988-10-12 | 1988-10-12 | Roll shape controller for twin roll type continuous casting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63254951A JP2544459B2 (en) | 1988-10-12 | 1988-10-12 | Roll shape controller for twin roll type continuous casting machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02104449A JPH02104449A (en) | 1990-04-17 |
| JP2544459B2 true JP2544459B2 (en) | 1996-10-16 |
Family
ID=17272120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63254951A Expired - Fee Related JP2544459B2 (en) | 1988-10-12 | 1988-10-12 | Roll shape controller for twin roll type continuous casting machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2544459B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016083506A1 (en) | 2014-11-28 | 2016-06-02 | Siemens Vai Metals Technologies Gmbh | Method for casting metal strip with crown control |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07204792A (en) * | 1994-01-24 | 1995-08-08 | Mitsubishi Heavy Ind Ltd | Twin roll type continuous casting apparatus |
| FR2732627B1 (en) * | 1995-04-07 | 1997-04-30 | Usinor Sacilor | METHOD AND DEVICE FOR ADJUSTING THE BOMB OF THE CYLINDERS OF A CASTING SYSTEM OF METAL STRIPS |
| JP5621390B2 (en) * | 2010-08-03 | 2014-11-12 | 株式会社Ihi | Cast roll shape control method and apparatus for twin roll type continuous casting apparatus |
| KR20150009869A (en) * | 2013-07-17 | 2015-01-27 | 주식회사 포스코 | Twin roll strip caster |
-
1988
- 1988-10-12 JP JP63254951A patent/JP2544459B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016083506A1 (en) | 2014-11-28 | 2016-06-02 | Siemens Vai Metals Technologies Gmbh | Method for casting metal strip with crown control |
| KR20170091127A (en) * | 2014-11-28 | 2017-08-08 | 지멘스 메탈스 테크놀로지스 베르뫼겐스베르발퉁스 게엠베하 | Method for casting metal strip with crown control |
| JP2017536242A (en) * | 2014-11-28 | 2017-12-07 | プライメタルズ テクノロジーズ オーストリア ゲー・エム・ベー・ハーＰｒｉｍｅｔａｌｓ Ｔｅｃｈｎｏｌｏｇｉｅｓ Ａｕｓｔｒｉａ ＧｍｂＨ | Method for casting metal strip with crown control |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02104449A (en) | 1990-04-17 |
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| Date | Code | Title | Description |
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| LAPS | Cancellation because of no payment of annual fees |