JPS61154746A - Continuous casting device for thin ingot - Google Patents

Continuous casting device for thin ingot

Info

Publication number
JPS61154746A
JPS61154746A JP27958484A JP27958484A JPS61154746A JP S61154746 A JPS61154746 A JP S61154746A JP 27958484 A JP27958484 A JP 27958484A JP 27958484 A JP27958484 A JP 27958484A JP S61154746 A JPS61154746 A JP S61154746A
Authority
JP
Japan
Prior art keywords
belt
cooling
cooling device
thickness
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.)
Pending
Application number
JP27958484A
Other languages
Japanese (ja)
Inventor
Nagayasu Bessho
別所 永康
Koichi Tozawa
戸沢 宏一
Tsutomu Nozaki
野崎 努
Yasuhiro Kakio
垣生 泰弘
Noboru Yasukawa
安川 登
Yoshihisa Kitano
嘉久 北野
Genpei Yaji
矢治 源平
Tomoaki Kimura
智明 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.)
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 JP27958484A priority Critical patent/JPS61154746A/en
Publication of JPS61154746A publication Critical patent/JPS61154746A/en
Pending 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)

Abstract

PURPOSE:To assure the uniform thickness of water films over the entire part of cooling bodies and to prevent the bulging and thermal deformation of an ingot by attaching projections or roller shoes to the side of the surface in contact with metallic belts as a cooling device. CONSTITUTION:The cooling device to be positioned behind each metallic belt is attached with the projections 14 or roller shoes 15 to form a spacing 8 on the side of the surface in contact with the belt. The projections 14 of which the height is equal to the prescribed thickness 8 of the water film are fixed to the surface of such cooling device to assure the thickness 8 of the water film over the entire surface of a pad. The roller shoes 15 are otherwise attached thereto to assure the water film thickness 8 over the entire surface of the pad. Grooves 16 cut to the shoes 15 are designed to permit the smooth water dis charge and belt cooling in the roller part.

Description

【発明の詳細な説明】 (産業上の利用分野) 本発明は、ベルト式連続鋳造装置によって薄鋳片を連続
鋳造する装置に関し、溶融金属とりわけ溶鋼から厚さが
50mn+以下にもなる薄鋳片(シートバー等)を直接
製造する、いわゆる1ベルトキヤスター”を使う連続鋳
造機のベルト背後の冷却構遺体の新規な構成について提
案する。
Detailed Description of the Invention (Industrial Application Field) The present invention relates to an apparatus for continuously casting thin slabs using a belt-type continuous casting machine, and the present invention relates to a device for continuously casting thin slabs from molten metal, particularly molten steel, with a thickness of 50 mm+ or less. We propose a new configuration of the cooling structure behind the belt of a continuous casting machine that uses a so-called "one-belt caster" to directly manufacture sheets (such as seat bars).

(従来の技術) 溶鋼から直接シートバーの如き鋼板を連続的に製造する
連続鋳造装置すなわちベルトキャスターとしては、種々
の形式のものがあるが、第1図はそのうちの代表的なも
のの一つである。この図示例の同期式ベルトキャスター
は、特開昭59−92154号として開示されている絞
り込み方式のもので、所定の距離にわたって溶鋼や凝固
シェル等の鋳造材料を保持するための間隙を維持しつつ
、それぞれ複数個のガイドロール3a、3b、3c、3
a、3b’、3c’を介して輪回移動する対向配置した
一対の長辺面を支持スる金属ベルト1,2と、それら両
金属ベルト相互間にあって各々の側縁近傍で緊密に接し
ている短辺面用の固定式短辺壁4,5とで4方を限局し
て鋳造空間とした構成によってなる。特に、上記短辺壁
4,5は、厚さ30mm以下の薄板7を得るために、注
入ノズル6の径(約100mm<)を考慮すると、広幅
の上部に対し下部に向うに従って順次先細りそして一定
幅となる略逆三角形の構造のものが必要である。
(Prior Art) There are various types of continuous casting equipment, ie belt casters, that continuously manufacture steel plates such as sheet bars directly from molten steel. Figure 1 shows one of the typical ones. be. The synchronous belt caster in this illustrated example is of the narrowing type disclosed in Japanese Patent Application Laid-Open No. 59-92154, and maintains a gap for holding cast materials such as molten steel or solidified shell over a predetermined distance. , a plurality of guide rolls 3a, 3b, 3c, 3, respectively.
metal belts 1 and 2 supporting a pair of opposing long side surfaces that move circularly via a, 3b', and 3c'; Fixed short side walls 4 and 5 for the short sides define a casting space that is confined on four sides. In particular, in order to obtain a thin plate 7 with a thickness of 30 mm or less, the short side walls 4 and 5 are wide at the top and gradually taper toward the bottom, considering the diameter of the injection nozzle 6 (approximately 100 mm or less). It is necessary to have an approximately inverted triangular structure with a width.

この種のベルトキャスターは、冷却された金属ベルトに
溶鋼が接すると、その冷却面で凝固シェルを生成させ、
それを次第に成長肥厚化させることによって、所定の厚
さの鋳片を得る形式になっている。そのために、前記金
属(鋼製)ベルト2の裏側(背後)には第4図に示すよ
うな冷却パッドと呼ばれる冷却装置8が設けである。こ
の冷却パッド8には、給水孔9、排水孔10が設けてあ
り、給水孔9からの水量調整は、流量調整弁11で行う
This type of belt caster generates a solidified shell on the cooling surface when molten steel comes into contact with the cooled metal belt.
By gradually growing and thickening it, a cast slab of a predetermined thickness is obtained. For this purpose, a cooling device 8 called a cooling pad as shown in FIG. 4 is provided on the back side (behind) of the metal (steel) belt 2. This cooling pad 8 is provided with a water supply hole 9 and a drainage hole 10, and the amount of water from the water supply hole 9 is adjusted by a flow rate adjustment valve 11.

かかるベルト式連続鋳造装置における上記冷却パッド8
の機能は、金属ベルl−1,2と冷却パッド8との間に
、常に流れのある水膜12を形成させ、溶鋼13の間接
冷却を果すことにある。ところが、従来の冷却装置8は
、かかる機能を有効に果していないのが実情である。
The cooling pad 8 in such a belt type continuous casting apparatus
Its function is to form a constantly flowing water film 12 between the metal bells l-1, 2 and the cooling pad 8, thereby achieving indirect cooling of the molten steel 13. However, the reality is that the conventional cooling device 8 does not effectively fulfill this function.

すなわち、かかる冷却装置8としての必要な条件は、 (1)  鋳片冷却のための所定の水膜内流速を確保で
きること、 (2)鋳片保持のための所定の水膜内水圧を確保できる
こと、 である。
In other words, the necessary conditions for such a cooling device 8 are: (1) being able to secure a predetermined flow velocity in the water film for cooling the slab, and (2) being able to secure a predetermined water pressure in the water film for holding the slab. , is.

しかしながら従来の冷却装置においては、ベルト歪やベ
ルトテンションの不均一等に起因して冷却水流量の巾方
向不均一が生じた場合、水膜厚みの不均一をひきおこし
、局部的にベルト冷却装置との間の水膜が薄くなる現象
、あるいは水膜が途切れる現象が起ることがしばしば生
じ、ベルト熱変形さらにはベルト溶損を引き起こし、連
々鋳の障害となっていた。また鋳片の断面形状も冷却不
均一によりモールド外で局部的熱変形やバルジングを生
じ、はなはだ不良であった。
However, in conventional cooling devices, if the cooling water flow rate is uneven in the width direction due to belt distortion or uneven belt tension, it causes uneven water film thickness and the belt cooling device is locally damaged. The phenomenon in which the water film between the belts becomes thinner or the water film is interrupted often occurs, causing thermal deformation of the belt and even melting of the belt, which is a continuous hindrance to casting. Furthermore, the cross-sectional shape of the slab was extremely poor, with local thermal deformation and bulging occurring outside the mold due to uneven cooling.

(発明が解決しようとする問題点) 本発明は、ベルト歪やベルトテンションの不均一等に起
因して不可避に起る上述したベルト変形や溶損、鋳片自
身の変形やバルジングを克服することを目的としており
、ベルトの背後に常に一定の水流速・水圧を確保できる
冷却体構造を提案することにある。
(Problems to be Solved by the Invention) The present invention overcomes the above-mentioned belt deformation and melting damage, as well as deformation and bulging of the slab itself, which inevitably occur due to belt distortion, uneven belt tension, etc. The purpose is to propose a cooling body structure that can always maintain a constant water flow velocity and water pressure behind the belt.

(問題点を解決するための手段) 本発明は上記問題点克服の手段として、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金属ベルトで構成し、その金属ベ
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連
続鋳造機において、上記冷却装置として金属ベルトとの
接触面側に突起もしくはローラーシューを取付けた冷却
装置を配設したことを特徴とする薄鋳片連続鋳造装置を
提案する。
(Means for Solving the Problems) As a means for overcoming the above-mentioned problems, the present invention comprises at least one side of the portion corresponding to the mold that faces each other with a metal belt that rotates in synchronization with the drawing of the slab, In a continuous casting machine in which a cooling device with cooling liquid supply and discharge functions is installed behind the metal belt to cool the slab across the belt, the cooling device is placed on the side of the contact surface with the metal belt. We propose a continuous casting machine for thin cast slabs, which is characterized by a cooling device equipped with protrusions or roller shoes.

(作 用) 本発明は、ベルト歪やベルトテンションの変動に伴う水
膜厚みの不均一を無くすために、スペーサーの如き機能
をもつ突起やローラーシューを取付けた冷却装置を用い
ると、常時一定の流水膜形成に有効であるという知見に
基いて構成したものである。
(Function) In order to eliminate uneven water film thickness caused by belt distortion and fluctuations in belt tension, the present invention uses a cooling device equipped with protrusions or roller shoes that function like spacers, so that the water film remains constant at all times. It was constructed based on the knowledge that it is effective in forming a running water film.

(実施例) 第1図に示す薄鋳片連続鋳造装置において、金属ベルト
1.2の背後に位置する冷却装置として、ベルト接触面
側に第2図に示すような間隔δを形成する突起14もし
くは第3図に示すようなローラーシュー15を取付けた
冷却装置を設ける。
(Example) In the thin slab continuous casting apparatus shown in FIG. 1, as a cooling device located behind the metal belt 1.2, projections 14 forming an interval δ as shown in FIG. 2 on the belt contact surface side Alternatively, a cooling device equipped with a roller shoe 15 as shown in FIG. 3 is provided.

第1のものは冷却装置表面に高さが所定の水膜厚みδに
等しい突起物14を固定し、パッド全面にわたる水膜厚
みδを確保するようにした例である。
The first one is an example in which a protrusion 14 whose height is equal to a predetermined water film thickness δ is fixed on the surface of the cooling device to ensure a water film thickness δ over the entire surface of the pad.

そしてローラーシュ−15を取りつけ、パッド全面にわ
たる水膜厚みδを確保するようにした例である。
This is an example in which a roller shoe 15 is attached to ensure a water film thickness δ over the entire surface of the pad.

かかるローラーシューに切ったみぞ16は、ローラ一部
で円滑な排水、ベルト冷却ができるように工夫したもの
である。
The grooves 16 cut into the roller shoe are designed to allow smooth drainage and belt cooling in a portion of the roller.

次に連鋳操業例について説明する。Next, an example of continuous casting operation will be explained.

301IIIIl厚X 1000s+m巾の低炭素アル
ミキルド綱を第1図に示す薄鋳片連続鋳造装置により鋳
込んだ。
A low carbon aluminum killed steel steel having a thickness of 301 mm and a width of 1000 s + m was cast using a continuous thin slab casting apparatus shown in FIG.

平均ΔT=38℃、鋳込み速度8m/win、水量比5
〜8 Nm’/5teel−tである。従来法と本発明
法A、 Hによるベルト寿命、鋳片厚み精度を比較して
表・1に示したが、本発明連続鋳造機を用いた例がいず
れも良好な結果が得られている。
Average ΔT=38℃, casting speed 8m/win, water volume ratio 5
~8 Nm'/5teel-t. Table 1 shows a comparison of belt life and slab thickness accuracy between the conventional method and methods A and H of the present invention, and good results were obtained in both cases using the continuous casting machine of the present invention.

* 従来法ベルト寿命を1として相対表示** ΔX/
X     ΔX : 30mmよりのズレ−ד: 
=30mm (発明の効果) 要するに本発明によれば、上述したような冷却体構造を
採用することにより、水腹厚みが冷却体全面に均一に確
保されるため、局部的なベルト熱変形やベルト溶損がな
くなり、しかも鋳片の均一冷却が可能となり、鋳片バル
ジングや熱変形がなくなり、鋳片厚み精度も向上する。
* Relative display with conventional method belt life as 1 ** ΔX/
X ΔX: Displacement from 30mm ד:
= 30 mm (Effects of the Invention) In short, according to the present invention, by adopting the above-described cooling body structure, the thickness of the water belly is ensured uniformly over the entire surface of the cooling body, thereby preventing local thermal deformation of the belt and Erosion loss is eliminated, slabs can be cooled uniformly, slab bulging and thermal deformation are eliminated, and slab thickness accuracy is improved.

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

第1図は、本発明の好適実施態様を示すベルト式連続鋳
造装置の概略を示す斜視図、 第2図および第3図のそれぞれ(a)、 (b)は、い
ずれも本発明によるベルト式連続鋳造装置の冷却体構造
の例を示す斜視図と部分拡大図、 第4図は、従来法によるベルト冷却性体構造例を示す斜
視図と部分拡大図である。 1.2・・・金属ベルト3,3・・・ガイドロール4.
5・・・短辺壁    6・・・注入ノズル7・・・鋳
片      8・・・冷却装置9・・・給水孔   
  lO・・・排水孔11・・・流量調整弁   12
・・・水膜13・・・溶鋼      14・・・突起
物15・・・ローラーシュー 16・・・ローラーみぞ 第1図 第21A (a)        ・′b。 第3図 (a)        tb)
FIG. 1 is a perspective view schematically showing a belt-type continuous casting apparatus according to a preferred embodiment of the present invention, and FIGS. A perspective view and a partially enlarged view showing an example of a cooling body structure of a continuous casting apparatus. FIG. 4 is a perspective view and a partially enlarged view showing an example of a belt cooling body structure according to a conventional method. 1.2... Metal belt 3, 3... Guide roll 4.
5... Short side wall 6... Injection nozzle 7... Slab 8... Cooling device 9... Water supply hole
lO... Drain hole 11... Flow rate adjustment valve 12
... Water film 13 ... Molten steel 14 ... Protrusion 15 ... Roller shoe 16 ... Roller groove 1 Figure 21A (a) ・'b. Figure 3 (a) tb)

Claims (1)

【特許請求の範囲】[Claims] 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金属ベルトで
構成し、その金属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
却するようにした連続鋳造機において、上記冷却装置と
して金属ベルトとの接触両側に突起もしくはローラーシ
ューを取り付けた冷却装置を配設したことを特徴とする
薄鋳片連続鋳造装置。
1. At least one side of the part corresponding to the mold that faces each other is constructed of a metal belt that rotates in synchronization with the drawing of the slab, and a cooling device that has the function of supplying and discharging the cooling liquid is arranged behind the metal belt. The continuous casting machine is equipped with a continuous casting machine that cools the slab across a belt, and the cooling device is provided with protrusions or roller shoes on both sides of contact with the metal belt. Continuous slab casting equipment.
JP27958484A 1984-12-26 1984-12-26 Continuous casting device for thin ingot Pending JPS61154746A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP27958484A JPS61154746A (en) 1984-12-26 1984-12-26 Continuous casting device for thin ingot

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP27958484A JPS61154746A (en) 1984-12-26 1984-12-26 Continuous casting device for thin ingot

Publications (1)

Publication Number Publication Date
JPS61154746A true JPS61154746A (en) 1986-07-14

Family

ID=17613016

Family Applications (1)

Application Number Title Priority Date Filing Date
JP27958484A Pending JPS61154746A (en) 1984-12-26 1984-12-26 Continuous casting device for thin ingot

Country Status (1)

Country Link
JP (1) JPS61154746A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02179344A (en) * 1988-12-28 1990-07-12 Hitachi Ltd Belt type continuous casting machine and controlling method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02179344A (en) * 1988-12-28 1990-07-12 Hitachi Ltd Belt type continuous casting machine and controlling method thereof
JPH0461737B2 (en) * 1988-12-28 1992-10-01 Hitachi Seisakusho Kk

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