JPH0312986B2 - - Google Patents

Info

Publication number
JPH0312986B2
JPH0312986B2 JP12505285A JP12505285A JPH0312986B2 JP H0312986 B2 JPH0312986 B2 JP H0312986B2 JP 12505285 A JP12505285 A JP 12505285A JP 12505285 A JP12505285 A JP 12505285A JP H0312986 B2 JPH0312986 B2 JP H0312986B2
Authority
JP
Japan
Prior art keywords
belt
water supply
supply port
cooling device
pressure
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
Application number
JP12505285A
Other languages
Japanese (ja)
Other versions
JPS61283443A (en
Inventor
Nozomi Tamura
Genpei Yaji
Koichi Tozawa
Nagayasu Betsusho
Tomoaki Kimura
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.)
JFE Steel Corp
Hitachi Ltd
Original Assignee
Hitachi Ltd
Kawasaki Steel 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 Hitachi Ltd, Kawasaki Steel Corp filed Critical Hitachi Ltd
Priority to JP12505285A priority Critical patent/JPS61283443A/en
Publication of JPS61283443A publication Critical patent/JPS61283443A/en
Publication of JPH0312986B2 publication Critical patent/JPH0312986B2/ja
Granted legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0637Accessories therefor
    • B22D11/068Accessories therefor for cooling the cast product during its passage through the mould surfaces
    • B22D11/0685Accessories therefor for cooling the cast product during its passage through the mould surfaces by cooling the casting belts

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、ベルトキヤスターのベルト冷却装置
に関し、特に鋳片の長辺面を支持するためのベル
ト背面に配置した冷却装置の構造、とりわけ給水
開口に関連する技術についての提案である。
DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a belt cooling device for a belt caster, and more particularly, to a structure of a cooling device disposed on the back side of a belt for supporting the long sides of a cast slab. This is a proposal regarding technology related to water supply openings.

ベルトキヤスターは、溶融金属なかでも溶綱か
ら厚さが50mm以下の薄鋳片(いわゆるシートバー
等)を直接製造する薄鋳片連続鋳造機である。
A belt caster is a continuous thin slab casting machine that directly produces thin slabs (so-called sheet bars, etc.) with a thickness of 50 mm or less from molten metal.

(従来の技術) 走行径路の一部が向い合わせに対設された輪回
移動する一対の金属ベルトを用いる絞り込み形式
のベルトキヤスターとしては、特開昭59−185554
号として開示されたものがある。この既知技術に
おけるベルトキヤスターは、金属ベルトの背後に
ベルトに面して多数の給・排水口を開口させてな
る“冷却パツド”と呼ばれている冷却装置が配設
してあり、この冷却パツドとベルトとの間に冷却
水の流水膜を形成させることによりベルトの冷却
を果している。
(Prior Art) A narrow belt caster using a pair of circularly moving metal belts with part of the running path facing each other is disclosed in Japanese Patent Application Laid-Open No. 59-185554.
There are some that have been disclosed as No. The belt caster in this known technology is equipped with a cooling device called a "cooling pad" which has a large number of supply and drain ports facing the belt behind the metal belt. The belt is cooled by forming a running water film between the pad and the belt.

ところが、冷却パツドとベルトとの間(通液空
間)は、ベルトのセンタリング等のためにベルト
張力が変動し、その結果幅方向で不均一となる
(鋳片が中くぼみの形状を呈する)。従つて、上記
通液空間を流れる冷却液膜の厚さも不均一とな
り、ひいてはベルト幅方向での冷却も均一でなく
なるという問題点があつた。
However, between the cooling pad and the belt (liquid passage space), the belt tension fluctuates due to belt centering, etc., and as a result, the belt tension becomes uneven in the width direction (the slab takes on the shape of a hollow). Therefore, there is a problem in that the thickness of the cooling liquid film flowing through the liquid passage space becomes non-uniform, and as a result, the cooling in the width direction of the belt becomes non-uniform.

かような問題点に対して本出願人は、先に特願
昭59−12151号にその解決手段の一端を示したが、
完全にその目的を達成するに至つておらず、なお
改善を必要としていた。
The present applicant previously proposed a solution to such problems in Japanese Patent Application No. 12151/1982, but
This goal had not been fully achieved and improvements were still needed.

(発明が解決しようとする問題点) 当該分野における従来技術水準では、ベルト幅
方向での冷却水流水膜による均一支持が阻害さ
れ、ベルト全体が弓なりにたわむために、 (1) 中央部の厚みが薄くなるという鋳片幅方向厚
みの不均一、 (2) ベルトと側板との間から湯もれが生じること
による鋳張りの発生、 (3) ベルトと側板との間で起こるステイツキング
性ブレイクアウト、 が不可避に起る。
(Problems to be Solved by the Invention) In the prior art in this field, uniform support by the cooling water film in the width direction of the belt is inhibited, and the entire belt bends in an arched manner. (2) Occurrence of casting due to leakage between the belt and the side plate, (3) Statesking break that occurs between the belt and the side plate. Out, will inevitably occur.

(問題点を解決するための手段) 本発明は、従来技術が抱る上述した問題点に対
し、 (1) ベルト幅方向の端部に位置する給水口とそれ
以外の中間部に設けた給水口を、異なる水圧に
調整したヘツダーに接続すること、 (2) 端部近傍の給水口については、その開口から
噴射する冷却水が外向きになるように角度をも
たせ、かつこのベルト最端部側へ向かう傾斜角
度は、ベルト冷却装置のベルトに相対した面の
法線に対し10〜85゜の範囲とすること、 (3) 端部給水口ヘツダー圧力P0と中間部給水口
ヘツダー圧力P1とは、端部のものの方が高い
圧力となるように、ヘツダーの圧力を1≦
P0/P1≦5の関係を満足するように調整する
こと、 により、ベルト幅方向における流水膜圧力分布が
均一になるように端部を高圧状態に維持し、均一
なベルト浮上を実現するようにしたのである。
(Means for Solving the Problems) The present invention solves the above-mentioned problems of the prior art by providing (1) a water supply port located at the end in the belt width direction and a water supply port provided at the other intermediate portion; (2) The water inlet near the end should be angled so that the cooling water jetted from the opening faces outward, and the end of the belt should be The angle of inclination toward the side shall be in the range of 10 to 85 degrees with respect to the normal to the surface of the belt cooling device facing the belt. (3) End water supply port header pressure P 0 and intermediate water supply port header pressure P 1 means that the pressure at the header is 1≦ so that the pressure at the end is higher.
By adjusting to satisfy the relationship P 0 /P 1 ≦5, the ends are maintained in a high pressure state so that the water film pressure distribution in the belt width direction is uniform, and uniform belt floating is achieved. That's what I did.

ここに端部とは、可動ベルトの側縁近傍に配置
した側板の溶融金属及びその凝固鋳片と接する内
面を境界として、この境界より外側をいう。
Here, the term "end" refers to the area outside the boundary of the inner surface of the side plate disposed near the side edge of the movable belt, which is in contact with the molten metal and the solidified slab thereof.

上記端部給水口は、第1図、第2図として示す
ように単数または複数である。
The end water supply port may be singular or plural as shown in FIGS. 1 and 2.

(作用) ベルト幅方向の端部;すなわち従来提供されて
いる冷却パツド4,5に設けた外側給水口4cの
最も外側の給水口よりもさらにその外側に1以上
の端部給水口4eを設け、しかもこの端部給水口
4eから噴射される冷却水が斜め外側を向き、望
ましくは第1図に示すように側板の位置となるの
がよく、また傾斜角度θは10゜以上85°以下とす
る。傾斜角度θが10゜以下では効果がなく、85゜以
上となると給水口4cの最も外側の給水口との間
で給水の滞留が生じ不具合となるためである。
(Function) At least one end water supply port 4e is provided at the end in the belt width direction; that is, further outward from the outermost water supply port of the outer water supply ports 4c provided in the conventionally provided cooling pads 4, 5. Moreover, the cooling water injected from the end water supply port 4e should face diagonally outward, preferably at the side plate position as shown in FIG. 1, and the inclination angle θ should be 10° or more and 85° or less. do. This is because if the inclination angle θ is less than 10 degrees, there is no effect, and if it is more than 85 degrees, water will accumulate between the water supply ports 4c and the outermost water supply port, resulting in a problem.

また、1≦P0/P1≦5は、P0/P1<1だと効
果がなく、P0/P1>5だと中間部に逆流するお
それがある。
Further, when 1≦P 0 /P 1 ≦5, there is no effect if P 0 /P 1 <1, and if P 0 /P 1 >5, there is a risk that the liquid will flow back to the intermediate portion.

上述のような給水口構造を設け、端部給水口の
ヘツダー水圧P0:3〜3.7Kg/cm2、中間部給水口
のヘツダー水圧P1:1〜2Kg/cm2に調整して冷
却水を噴射し、可動ベルト1,2と冷却パツド
4,5との間に一定厚みの冷却水流水膜を形成さ
せ、前記可動ベルトが撓まないように制御冷却
し、均一鋳片を得るとともに鋳張りやブレイクア
ウト防止を図る。
The water supply port structure as described above is provided, and the header water pressure at the end water supply port is adjusted to P 0 : 3 to 3.7 Kg/cm 2 and the header water pressure at the middle water supply port P 1 is adjusted to 1 to 2 Kg/cm 2 to supply cooling water. A cooling water film of a certain thickness is formed between the movable belts 1, 2 and the cooling pads 4, 5, and the movable belts are cooled in a controlled manner so as not to bend, thereby obtaining uniform slabs and casting. To prevent tension and breakouts.

(実施例) 本発明装置につき第3図に示すベルトキヤスタ
ーに適用した例で説明する。図示のベルトキヤス
ターは、絞り込み方式のもので、溶綱およびその
凝固鋳片を所定の距離にわたつて保持するための
間隙を形造る対向配置にかかる一対の輪回移動可
能な可動ベルト1,2と両ベルト相互間にあつて
その側縁近傍に配置した一対の固定側板(図示せ
ず)とで先すぼまり形状の鋳造空間3を構成して
なり、かつ該金属ベルト1,2の冷却のためにそ
の背面に通液空間6を隔てて冷却パツド4,5を
配置してなるものである。
(Example) The device of the present invention will be explained using an example in which it is applied to a belt caster shown in FIG. The illustrated belt caster is of a narrowing type, and includes a pair of movable belts 1 and 2 that are disposed opposite each other to form a gap for holding molten steel and its solidified slab over a predetermined distance. and a pair of fixed side plates (not shown) disposed near the side edges between both belts, forming a tapered casting space 3, and cooling the metal belts 1, 2. For this reason, cooling pads 4 and 5 are arranged on the back side with a liquid passage space 6 between them.

冷却パツド4,5は、端部給水口4eが傾斜角
(θ)30゜で、ヘツダーの水圧が3〜3.7Kg/cm2
範囲に調節されたものになつており、一方中間部
給水口4cの構成が3.2mmφの16個の孔からなり、
水圧P1=1.2Kg/cm2、水量230/minのヘツダー
に接続されたものを用いた。
In the cooling pads 4 and 5, the end water supply port 4e has an inclination angle (θ) of 30°, and the header water pressure is adjusted to a range of 3 to 3.7 kg/cm 2 , while the middle water supply port The structure of 4c consists of 16 holes of 3.2mmφ,
The one connected to a header with a water pressure P 1 =1.2 Kg/cm 2 and a water flow rate of 230/min was used.

実施の結果を第4図および第5図に示す。第4
図は、ベルト幅方向における冷却水流水膜の圧力
分布を示すが端部で昇圧されていることが明らか
であり、その結果第5図に示すようにベルトたわ
み量が幅方向で均一化している。
The results of the implementation are shown in FIGS. 4 and 5. Fourth
The figure shows the pressure distribution of the cooling water film in the belt width direction, and it is clear that the pressure is increased at the ends, and as a result, the amount of belt deflection is uniform in the width direction, as shown in Figure 5. .

(発明の効果) 以上説明したように本発明によれば、一定厚み
の鋳片を確実に得ることができる他、鋳張りや湯
さし、ならびにそれらに起因するブレイクアウト
のない安定した連続鋳造操業を行うことができ
る。
(Effects of the Invention) As explained above, according to the present invention, in addition to being able to reliably obtain slabs of a constant thickness, stable continuous casting is possible without cast casting, boiling, and breakouts caused by them. Operations can be carried out.

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

第1図は、本発明冷却装置の一部を示す略線
図、第2図は、本発明の別の実施例を示す略線
図、第3図は、ベルトキヤスターの略線図、第4
図は、ベルト幅方向の流水膜圧力分布のグラフ、
第5図は、ベルト幅方向のベルトたわみ量の変化
を示すグラフである。 1,2……金属ベルト、3……鋳造空間、4,
5……冷却パツド、6……通液空間、7……側
板。
FIG. 1 is a schematic diagram showing a part of the cooling device of the present invention, FIG. 2 is a schematic diagram showing another embodiment of the present invention, and FIG. 3 is a schematic diagram of a belt caster. 4
The figure shows a graph of the water film pressure distribution in the belt width direction.
FIG. 5 is a graph showing changes in belt deflection in the belt width direction. 1, 2...metal belt, 3...casting space, 4,
5...Cooling pad, 6...Liquid passage space, 7...Side plate.

Claims (1)

【特許請求の範囲】 1 鋳型に相当する部分の互いに向い合う少なく
とも一辺を、鋳片引抜きに同期して輪回移動する
可動ベルトで構成し、その可動ベルトの背後に冷
却液の供給、排出機能を有する冷却装置を配設し
て鋳片をベルトを隔てて冷却するようにしたベル
トキヤスターのベルト冷却装置において、 上記冷却装置のベルトに面して開口させた給水
口のうち、ベルト幅方向の端部に位置するものと
それ以外の中間部に位置するものとを区別して、
それらを夫々異なるへツダーに接続し、かつこの
各ヘツダーの圧力を、端部の給水口に接続するヘ
ツダーの圧力P0と中間部の給水口に接続するヘ
ツダーの圧力P1とが、1≦P0/P1≦5の関係を
満足するように調整し、さらに端部の給水口につ
いてはその開口を、ベルト冷却装置のベルトに相
対した面の法線に対し10〜85゜の範囲でベルト最
端部側に傾斜させたことを特徴とするベルトキヤ
スターのベルト冷却装置。
[Claims] 1. At least one side of the part corresponding to the mold that faces each other is constituted by a movable belt that rotates in synchronization with the drawing of the slab, and a function for supplying and discharging cooling liquid is provided behind the movable belt. In a belt cooling device for a belt caster, which is equipped with a cooling device that cools slabs across the belt, one of the water inlet openings facing the belt of the cooling device is located in the belt width direction. Distinguish between those located at the ends and those located in the middle,
They are each connected to different headers, and the pressure of each header is determined by the pressure P 0 of the header connected to the water supply port at the end and the pressure P 1 of the header connected to the water supply port in the middle, 1≦ The adjustment is made to satisfy the relationship P 0 /P 1 ≦5, and the opening of the water supply port at the end is set within the range of 10 to 85 degrees with respect to the normal to the surface of the belt cooling device facing the belt. A belt cooling device for a belt caster, characterized in that the belt is inclined toward the outermost end of the belt.
JP12505285A 1985-06-11 1985-06-11 Belt cooler for belt caster Granted JPS61283443A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12505285A JPS61283443A (en) 1985-06-11 1985-06-11 Belt cooler for belt caster

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12505285A JPS61283443A (en) 1985-06-11 1985-06-11 Belt cooler for belt caster

Publications (2)

Publication Number Publication Date
JPS61283443A JPS61283443A (en) 1986-12-13
JPH0312986B2 true JPH0312986B2 (en) 1991-02-21

Family

ID=14900633

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12505285A Granted JPS61283443A (en) 1985-06-11 1985-06-11 Belt cooler for belt caster

Country Status (1)

Country Link
JP (1) JPS61283443A (en)

Also Published As

Publication number Publication date
JPS61283443A (en) 1986-12-13

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