JPH0615096B2 - Thin plate continuous casting method - Google Patents
Thin plate continuous casting methodInfo
- Publication number
- JPH0615096B2 JPH0615096B2 JP60071091A JP7109185A JPH0615096B2 JP H0615096 B2 JPH0615096 B2 JP H0615096B2 JP 60071091 A JP60071091 A JP 60071091A JP 7109185 A JP7109185 A JP 7109185A JP H0615096 B2 JPH0615096 B2 JP H0615096B2
- Authority
- JP
- Japan
- Prior art keywords
- drum
- molten metal
- twin
- drums
- continuous casting
- 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 - Lifetime
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
- B22D11/0622—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars formed by two casting wheels
-
- 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
- B22D11/16—Controlling or regulating processes or operations
- B22D11/18—Controlling or regulating processes or operations for pouring
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、凝固シエルの合致点位置を制御して鋳片の横
割れやバルジングを防止するツインドラム方式による薄
板連続鋳造方法に関する。Description: TECHNICAL FIELD The present invention relates to a twin-drum type continuous casting method for thin plates by controlling the coincident point positions of solidified shells to prevent lateral cracking and bulging of slabs.
（先行技術） ドラム式薄板鋳造装置において、凝固シエル厚さを制御
して鋳片の横割れ、バルジング防止対策として、２枚の
凝固シエルの合致点位置を制御する基本発明について
は、本発明者等はすでに提案している（特願昭５８−２
０００７５号）。しかしながら、この具体的手段につい
ては未だ提案されていない。(Prior Art) In the drum type thin plate casting apparatus, the inventors of the present invention have a basic invention of controlling the coincidence position of two solidified shells as a measure to prevent lateral cracking and bulging of the slab by controlling the solidified shell thickness. Have already proposed (Japanese Patent Application No. 58-2).
No. 00007). However, no specific means has been proposed yet.
（発明が解決しようとする問題点） 〔本発明の目的〕 本発明は、この具体的手段を提供するものであり、詳細
には、本発明は、凝固シエルの合致点位置を制御して鋳
片の横割れ並びに、バルジング防止することができるツ
インドラム方式による薄板連続鋳造方法を提供すること
を目的とする。(Problems to be Solved by the Invention) [Object of the Present Invention] The present invention provides this specific means, and more specifically, the present invention controls casting at the matching point position of the solidification shell. It is an object of the present invention to provide a twin plate continuous casting method capable of preventing lateral cracking of a piece and bulging.
（問題点を解決するための手段） 本発明は、溶湯レベルをツインドラムの頂部より下方に
設定して薄板を連続鋳造する方法において、ツインドラ
ムの間隔を一定に保持し、該ドラムにかかる荷重の変化
及び溶湯レベルの変化に応じて、ツインドラム間に供給
する溶湯の流量を変化させ、溶湯とドラムとの接触長を
調節することを特徴とする薄板連続鋳造方法である。(Means for Solving the Problems) The present invention is a method of continuously casting a thin plate by setting the molten metal level below the top of the twin drum, keeping a constant interval between the twin drums, and applying a load to the drum. And the level of the molten metal, the flow rate of the molten metal supplied between the twin drums is changed to adjust the contact length between the molten metal and the drum.
本発明では、ツインドラムの間隔を一定にし、凝固シエ
ル厚さの変化にともなうドラム荷重変化をロードセルで
検出し、かつ、溶湯レベル変化をテレビカメラ検出し
て、荷重が一定になるようにツインドラム間に供給する
溶湯の流量を変化させ、溶湯とドラムとの接触長を調節
することにより、シエル厚さを一定にしようとするもの
であり、そして、このドラム荷重変化並びに溶湯レベル
変化を示す信号に不感帯をそれぞれ設け、この不感帯か
らはずれたときに溶湯の供給量を調節するようにしたも
のである。According to the present invention, the twin drums are arranged at a constant interval, the load change of the drum due to the change of the solidified shell thickness is detected by the load cell, and the change of the molten metal level is detected by the television camera to keep the load constant. The shell thickness is made constant by changing the flow rate of the molten metal supplied between them and adjusting the contact length between the molten metal and the drum, and a signal indicating this drum load change and the molten metal level change. A dead zone is provided for each of the two, and the amount of molten metal supplied is adjusted when the dead zone is deviated from.
以下、第１図及び第２図に基づいて本発明を詳細に説明
する。第１図は本発明の実施例を示す図であり、第２図
はドラムにかかる荷重Ｐとドラム回転速度Ｖとの関係図
である。Hereinafter, the present invention will be described in detail with reference to FIGS. 1 and 2. FIG. 1 is a diagram showing an embodiment of the present invention, and FIG. 2 is a relationship diagram between a load P applied to the drum and a drum rotation speed V.
第１図において、１はタンデイツシユ、２はタンデイツ
シユ内溶鋼、３はツインドラム間溶鋼、４ａ，４ｂは水
冷式のドラム、５はツインドラム間の溶鋼レベルを検出
するためのＴＶカメラ、６は信号処理装置、７はレベル
設定器、８はタンデイツシユ流量調節計、９は弁駆動装
置、１０はストツパー弁、１１ａ，１１ｂは減速器、１
２はモータ、１３はモータ制御装置、１４は速度設定
器、１５はロードセル、１６はドラム間隔調整装置、１
７は調節計である。In FIG. 1, 1 is a tan dash, 2 is molten steel in tan dash, 3 is molten steel between twin drums, 4a and 4b are water-cooled drums, 5 is a TV camera for detecting the molten steel level between twin drums, and 6 is a signal. A processing device, 7 is a level setter, 8 is a tandem flow controller, 9 is a valve drive device, 10 is a stop valve, 11a and 11b are speed reducers, 1
2 is a motor, 13 is a motor control device, 14 is a speed setting device, 15 is a load cell, 16 is a drum interval adjusting device, 1
7 is a controller.
上記ツインドラム式薄板連鋳設備では、２つのドラム４
ａ，４ｂに接触した溶鋼３がそれぞれのドラム面で、凝
固シエルを生成し、ロールの出側で重ね合わされて板と
なる。したがつて一方のドラムで出口板厚の1/2厚さの
シエルを作る必要があり、それぞれのドラム面で生成さ
れるシエル厚さT/2は次式で表わされる。In the twin drum type thin plate continuous casting equipment, two drums 4
Molten steel 3 that has contacted a and 4b forms solidified shells on the respective drum surfaces, and is laminated on the exit side of the rolls to form a plate. Therefore, it is necessary to make a shell having a thickness of 1/2 of the outlet plate thickness on one drum, and the shell thickness T / 2 generated on each drum surface is expressed by the following equation.
（式中Ｔは板厚、ｋは凝固定数、ｔは溶鋼がドラム面に
接触する時間、ｌは溶鋼がドラム面に接触する長さ、Ｖ
はドラム速度をそれぞれ示す。） ところで、ドラム間隔を一定にして、溶鋼接触時間ｔを
変化したとき、ロードセルに加わる力を表示すると第２
に示すようになる。第２図からドラム速度が一定
（Ｖｏ）であれば、ｌ又はｔが大きくなるとシエル厚さ
が厚くなつてい荷重Ｐが大きくなり、ｌ又はｔが小さく
なると逆になることが分かる。 (Where T is the plate thickness, k is the solidification constant, t is the time during which the molten steel contacts the drum surface, l is the length during which the molten steel contacts the drum surface, V
Indicates the drum speed, respectively. ) By the way, when the molten steel contact time t is changed with the drum interval kept constant, the force applied to the load cell is displayed as
As shown in. It can be seen from FIG. 2 that if the drum speed is constant (V o ), the shell thickness becomes thicker as l or t increases, and the load P increases, and vice versa.
以上のことから、シエル厚さを一定にするには、荷重Ｐ
をロードセル１５で検出して、ドラム間の溶鋼レベルを
制御するタンデイツシユ流量調節計８の入力にフイード
バツクすることによつて、タンデイツシユ１内のストツ
パー弁１０の開度を変え、ドラム間の溶鋼レベルを変化
させて（換言すれば、溶鋼のドラム面接触長ｌを変化さ
せることになる。）T/2を一定にすることができる。From the above, in order to make the shell thickness constant, the load P
Is detected by the load cell 15 and the feed back is fed to the input of the tandem flow controller 8 for controlling the molten steel level between the drums, thereby changing the opening of the stopper valve 10 in the tandem transfer 1 to change the molten steel level between the drums. It can be changed (in other words, the drum surface contact length 1 of the molten steel is changed), and T / 2 can be made constant.
溶鋼の温度変化、ドラムの冷却状態変化などによつて、
シエル厚さが変化しても、本発明では、溶鋼接触長の調
節によつて、それぞれのドラムで生成されるシエル厚さ
を最適にすることができるので、割れ、バルジングなど
の防止ができる。Due to changes in molten steel temperature, changes in drum cooling state, etc.
Even if the shell thickness changes, in the present invention, the shell thickness generated in each drum can be optimized by adjusting the molten steel contact length, so that cracking, bulging, etc. can be prevented.
なお、荷重信号に±△Ｐの不感帯を設け、この不感帯か
らずれた時に溶鋼レベルを制御するようにすることもで
きる。It is also possible to provide a dead zone of ± ΔP in the load signal and control the molten steel level when the load signal deviates from the dead zone.
本発明は、以上詳記したように、ドラムにかかる荷重変
化及び溶湯レベル変化を検出し、この検出信号をツイン
ドラム間に供給する溶湯の流量にフィードバックさせる
ことにより、ドラム間の溶湯レベルを調節するものであ
るから、ドラム間の溶鋼湯面を安定させながら、鋳片の
横割れ並びにバルジングを防止することができる。INDUSTRIAL APPLICABILITY As described in detail above, the present invention detects the load change on the drum and the melt level change, and feeds back the detection signal to the flow rate of the melt supplied between the twin drums to adjust the melt level between the drums. Therefore, it is possible to prevent lateral cracking and bulging of the slab while stabilizing the molten steel surface between the drums.
第１図は、本発明の実施例を示す図であり、第２図はド
ラムにかかる荷重Ｐとドラム速度Ｖとの関係図である。FIG. 1 is a diagram showing an embodiment of the present invention, and FIG. 2 is a relationship diagram between a load P applied to a drum and a drum speed V.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 谷江 正舟 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造船所内 (56)参考文献 特開 昭60−44164（ＪＰ，Ａ) 特開 昭55−100852（ＪＰ，Ａ) 特開 昭60−64754（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Masafumi Tanie, Inoue, 4-6-22 Kannon Shinmachi, Nishi-ku, Hiroshima City, Hiroshima Prefecture Mitsubishi Heavy Industries, Ltd. Hiroshima Shipyard (56) Reference JP-A-60-44164 (JP, A) ) JP-A-55-100852 (JP, A) JP-A-60-64754 (JP, A)
Claims (1)
に設定して薄板を連続鋳造する方法において、ツインド
ラムの間隔を一定に保持し、該ドラムにかかる荷重の変
化及び溶湯レベルの変化に応じて、ツインドラム間に供
給する溶湯の流量を変化させ、溶湯とドラムとの接触長
を調節することを特徴とする薄板連続鋳造方法。1. A method for continuously casting thin plates with a molten metal level set below the top of a twin drum, in which the twin drums are held at a constant distance and the molten metal level is changed according to changes in load applied to the drum. And the contact length between the molten metal and the drum is adjusted by changing the flow rate of the molten metal supplied between the twin drums.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60071091A JPH0615096B2 (en) | 1985-04-05 | 1985-04-05 | Thin plate continuous casting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60071091A JPH0615096B2 (en) | 1985-04-05 | 1985-04-05 | Thin plate continuous casting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61232044A JPS61232044A (en) | 1986-10-16 |
| JPH0615096B2 true JPH0615096B2 (en) | 1994-03-02 |
Family
ID=13450515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60071091A Expired - Lifetime JPH0615096B2 (en) | 1985-04-05 | 1985-04-05 | Thin plate continuous casting method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0615096B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6216288U (en) * | 1985-07-15 | 1987-01-30 | ||
| JPH02255254A (en) * | 1989-03-30 | 1990-10-16 | Kawasaki Steel Corp | Method for controlling molten metal surface level in squeezing type continuous casting machine |
| JP2697908B2 (en) * | 1989-08-03 | 1998-01-19 | 新日本製鐵株式会社 | Control device of twin roll continuous casting machine |
| FR2755385B1 (en) * | 1996-11-07 | 1998-12-31 | Usinor Sacilor | METHOD FOR DETECTING FAULTS DURING CONTINUOUS CASTING BETWEEN CYLINDERS |
| AT411822B (en) † | 2002-09-12 | 2004-06-25 | Voest Alpine Ind Anlagen | METHOD AND DEVICE FOR STARTING A CASTING PROCESS |
| SE527507C2 (en) † | 2004-07-13 | 2006-03-28 | Abb Ab | An apparatus and method for stabilizing a metallic article as well as a use of the apparatus |
| CN104057052B (en) * | 2014-07-04 | 2016-01-20 | 秦皇岛首秦金属材料有限公司 | A kind of continuous casting process of applicable chamfer crystallizer steady production |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55100852A (en) * | 1979-01-29 | 1980-08-01 | Mitsubishi Heavy Ind Ltd | Direct rolling type continuous casting method |
| JPS6044164A (en) * | 1983-08-18 | 1985-03-09 | Hitachi Zosen Corp | Stable casting method for continuous casting installation of thin steel plate by twin mold roller type |
| JPS6064754A (en) * | 1983-09-19 | 1985-04-13 | Hitachi Ltd | Method and device for casting continuously light-gage hoop |
-
1985
- 1985-04-05 JP JP60071091A patent/JPH0615096B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61232044A (en) | 1986-10-16 |
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