JPH0749138B2 - Thin plate continuous casting equipment - Google Patents
Thin plate continuous casting equipmentInfo
- Publication number
- JPH0749138B2 JPH0749138B2 JP61004338A JP433886A JPH0749138B2 JP H0749138 B2 JPH0749138 B2 JP H0749138B2 JP 61004338 A JP61004338 A JP 61004338A JP 433886 A JP433886 A JP 433886A JP H0749138 B2 JPH0749138 B2 JP H0749138B2
- Authority
- JP
- Japan
- Prior art keywords
- thin plate
- water
- continuous casting
- drum
- fixed
- 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
- B22D11/0648—Casting surfaces
- B22D11/066—Side dams
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は薄板連続鋳造装置に関し、特に固定せきの材質
に特徴のあるツインドラム方式の薄板連続鋳造装置に関
する。Description: TECHNICAL FIELD The present invention relates to a thin plate continuous casting device, and more particularly to a twin-drum type thin plate continuous casting device characterized by the material of the fixed weir.
２本の内部水冷式ドラムとドラム端面に押し当てた２つ
の固定せきでできる空間に溶湯を注湯し薄板を連続鋳造
するツインドラム方式連続鋳造装置の固定せき材料には （１） 耐熱性に優れること（溶鋼温度1600℃） （２） 耐熱衝撃性に優れること（△Ｔ＝400℃） （３） 熱変形量が小さいこと（熱膨張係数が小さいこ
と） （４） 凝固物の剥離性に優れること（溶鋼との濡れ性
が悪いこと） （５） 耐摩耗性に優れること 等の機能が要求される。For the fixed dam material of the twin-drum type continuous casting machine that pours the molten metal into the space formed by two internal water-cooled drums and two fixed dams pressed against the drum end face, and (1) Heat resistance Excellent (molten steel temperature 1600 ° C) (2) Excellent thermal shock resistance (△ T = 400 ° C) (3) Small amount of thermal deformation (small coefficient of thermal expansion) (4) Removability of solidified material Excellent (poor wettability with molten steel) (5) Functions such as excellent wear resistance are required.
しかしながらこれらの機能を全て満足できる固定せき材
料は無いが、要求機能を比較的多く満足するボロンナイ
トライド（BN）を固定せき用耐火材として従来から使用
されている。However, there is no fixing material that can satisfy all of these functions, but boron nitride (BN), which satisfies a relatively large number of required functions, has been conventionally used as a refractory material for fixing materials.
ところで、上述したように、２本の内部水冷式ドラムと
ドラム端面に押し当てた２つの固定せきでできる空間に
溶湯を注湯し薄板を連続鋳造する従来のツインドラム方
式連続鋳造装置では、内部水冷式ドラムのドラム端面に
押し当てた固定せき材料にボロンナイトライドを使用し
ているが、ドラムとの摺動によりドラム端面周囲と摺接
する固定せきの部分が特に摩耗し、製造する鋳片の板巾
変動が生じたり又ボロンナイトライドが破損し鋳造が不
可能になるなどの問題点が生じている。By the way, as described above, in the conventional twin-drum type continuous casting device for pouring the molten metal into the space formed by the two internal water-cooled drums and the two fixed weirs pressed against the drum end faces to continuously cast thin plates, Boron nitride is used as the fixed dam material pressed against the end surface of the water-cooled drum, but the sliding part of the fixed dam, which comes into sliding contact with the periphery of the drum end surface, is particularly worn due to sliding with the drum. There are problems such as variation in strip width and damage to boron nitride, making casting impossible.
本発明は、上記問題点、すなわち、固定せきの、ドラム
端面周囲との摺接部の摩耗・破損に伴う問題点を解消す
る薄板連続鋳造装置を提供することを目的とする。SUMMARY OF THE INVENTION It is an object of the present invention to provide a thin plate continuous casting apparatus that solves the above problems, that is, the problems associated with the wear and damage of the sliding contact portion of the fixed weir with the periphery of the drum end surface.
本発明は、上記の目的を達成するために、固定せきを１
種類の耐火材で構成せず、固定せきのドラム端面周囲と
の摺接部を特に硬質で耐摩耗性、断熱性の優れたBNとSi
3N4からなる耐火材で構成したことを特徴としている。In order to achieve the above object, the present invention provides a fixed weir.
BN and Si, which are not composed of different types of refractory materials, are particularly hard at the sliding contact part around the end surface of the fixed weir and have excellent wear resistance and heat insulation.
It is characterized by being composed of a refractory material made of 3 N 4 .
即ち、本発明は、製造する金属帯板厚さに相当する間隔
を保持して水平に並設され、互いに反対方向に回転する
一対の水冷ドラムと、この水冷ドラムの両端面に押し当
てた２個の固定せきで形成される空間間に溶湯を注ぎ、
薄板を得る薄板連続鋳造装置において、水冷ドラム端面
周囲の円弧のうち、上記水冷ドラムの中立点よりやや下
方の位置から上方に向かう円弧を覆うように、全体とし
てＹ字型のBNとSi3N4からなる耐火材を上記固定せきに
植設したことを特徴とする薄板連続鋳造装置である。That is, according to the present invention, a pair of water-cooling drums that are horizontally arranged side by side with a space corresponding to the thickness of the metal strip to be manufactured and rotate in mutually opposite directions, and are pressed against both end surfaces of the water-cooling drum. Pour the molten metal between the spaces formed by the fixed weirs,
In a thin plate continuous casting apparatus for obtaining a thin plate, among the arcs around the end surface of the water cooling drum, Y-shaped BN and Si 3 N are used as a whole so as to cover an arc that goes upward from a position slightly lower than the neutral point of the water cooling drum. A continuous thin plate casting apparatus, wherein a refractory material consisting of 4 is planted in the fixed weir.
なお、固定せきが溶湯と接触する部分は、溶湯の高温に
より熱変形を生じやすい。それ故、前記接触部分は、耐
熱性、耐熱衝撃性が良好で、熱変形量の小さく、しか
も、凝固物の剥離性が良い材料、例えばボロンナイトラ
イド、グラファイト、Al2O3＋グラファイトなどの耐火
材で構成することが好ましい。The portion where the fixed weir comes into contact with the molten metal is likely to be thermally deformed due to the high temperature of the molten metal. Therefore, the contact portion has good heat resistance and thermal shock resistance, has a small amount of thermal deformation, and has a good releasability of the solidified material, such as boron nitride, graphite, Al 2 O 3 + graphite, etc. It is preferably composed of a refractory material.
第１〜３図に基づいて本発明を詳細に説明する。第１図
は本発明の実施例である薄板連続鋳造装置の縦断面図で
あり、第２図は第１図に於ける固定せきの拡大詳細図で
あり、第３図は第２図Ａ−Ａ断面図である。第１図に示
す装置は薄板鋳片３を製造するる水冷鋳造ドラム1,
1′、該水冷鋳造ドラム1,1′の間に溶湯４の洩れを防止
するサイド固定堰2,2′、溶鋼等の溶湯を溜めるタンデ
イツシユ５および注湯ノズル６などを主要構成部材とし
ている。The present invention will be described in detail with reference to FIGS. FIG. 1 is a vertical cross-sectional view of a thin plate continuous casting apparatus according to an embodiment of the present invention, FIG. 2 is an enlarged detailed view of a fixed weir in FIG. 1, and FIG. FIG. The apparatus shown in FIG. 1 is a water-cooled casting drum 1 for producing a thin sheet slab 3.
The main constituent members are 1 ', side fixing weirs 2 and 2'for preventing leakage of the molten metal 4 between the water-cooled casting drums 1 and 1', a tandem transfer 5 for storing molten metal such as molten steel, and a pouring nozzle 6.
この装置を詳細に説明すると、水冷鋳造ラム1,1′は水
平に設置されており、図示しない駆動装置により回転
（矢示方向）駆動される。この水冷鋳造ドラム1,1′は
例えば銅または銅合金、あるいは鋼材により形成され溶
湯４との接触面積を大きく得るために相当大径のドラム
となっている。また水冷鋳造ドラム1,1′の両端部には
サイドをシールするための耐火材からなる固定せき2,
2′が押し当てられており、２本の水冷鋳造ドラム1,1′
と２個の固定せき2,2′で形成される空間に注湯ノズル
６により溶湯４が注湯される。注湯された溶湯４は水冷
鋳造ドラム1,1′の表面に接触して冷却され、できた凝
固シエルは一体化されて鋳片３となる。この鋳片３はピ
ンチロール７により引抜かれる。This device will be described in detail. The water-cooled casting rams 1, 1'are horizontally installed and are driven to rotate (in the direction of the arrow) by a drive device (not shown). The water-cooled casting drum 1, 1 ′ is made of, for example, copper or copper alloy, or steel material, and has a considerably large diameter in order to obtain a large contact area with the molten metal 4. At both ends of the water-cooled casting drums 1 and 1 ', fixed weirs made of refractory material to seal the sides 2,
2'is pressed, and two water-cooled casting drums 1,1 '
The molten metal 4 is poured by the pouring nozzle 6 into the space formed by the two fixed weirs 2 and 2 '. The poured molten metal 4 comes into contact with the surfaces of the water-cooled casting drums 1 and 1'and is cooled, and the solidified shells thus formed are integrated to form a cast piece 3. The slab 3 is pulled out by the pinch roll 7.
上記第１図に示す装置の固定せき2,2′の作用を、第４
図および第５図に基づく従来装置の固定せきと対比させ
て詳細に説明する。なお、第４図は従来装置における固
定せきの拡大詳細図であつて、本発明の実施例図である
第２図に対応するものであり、また、第５図は従来装置
における固定せきの断面図であつて、本発明の実施例図
である第３図に対応するものである。The action of the fixed weirs 2, 2'of the device shown in FIG.
This will be described in detail in comparison with the fixed weir of the conventional device based on FIGS. FIG. 4 is an enlarged detailed view of the fixed weir in the conventional apparatus and corresponds to FIG. 2 which is an embodiment of the present invention, and FIG. 5 is a cross section of the fixed weir in the conventional apparatus. This figure corresponds to FIG. 3, which is an embodiment of the present invention.
従来の固定せき2,2′は、第４図および第５図に示すよ
うに、１種類の固定せき材料（耐火材）で構成されてい
る。すなわち、溶湯４と接触する部分も水冷鋳造ドラム
1,1′と接触する部分も同一材料で構成されている。そ
して、従来の固定せき材料として、硬質の耐火材（例え
ばAl2O3やZrO2）を使用すると、水冷鋳造ドラム1,1′と
の摺動による耐摩耗性が優れているが、熱衝撃に弱くそ
のため耐火材が割れプレートアウトを起こす。又軟質の
耐火材（例えばボロンナイトライド、グラファイトまた
はAl2O3＋グラファイト）の場合は熱衝撃には強いが摩
耗に弱い等１種類の耐火材では固定せき材料に要求され
る耐熱性摩耗性耐衝撃性の機能満足させることはできな
い。そこで本発明は第２図及び第３図に示す通り、固定
せき2,2′を溶湯４と接する部分2aは（１）耐熱性が良
い（２）耐熱衝撃性が良い（３）熱変形量が小さい
（４）凝固物の剥離性が良い材料、例えばボロンナイト
ライド（BN）、Al2O3＋グラファイトとし、ドラム1,1′
の端面周囲と摺動する部分2bは硬質で耐摩耗性に優れ
（５）断熱性の良いBN＋Si3N4からなる耐火材で構成す
ることにより、固定せきに要求される機能を全て満足す
ることができる。As shown in FIGS. 4 and 5, the conventional fixed dams 2 and 2'are made of one kind of fixed dam (fireproof material). That is, the portion that comes into contact with the molten metal 4 is also the water-cooled casting drum.
The parts that come into contact with 1,1 'are also made of the same material. When a hard refractory material (such as Al 2 O 3 or ZrO 2 ) is used as the conventional fixed dam, it has excellent wear resistance due to sliding with the water-cooled casting drums 1 and 1 ', but thermal shock Since it is weak, the refractory material will crack and cause plate out. In the case of a soft refractory material (for example, boron nitride, graphite or Al 2 O 3 + graphite), one type of refractory material is strong against thermal shock but weak against wear. The impact resistance function cannot be satisfied. Therefore, according to the present invention, as shown in FIGS. 2 and 3, the portion 2a where the fixed weirs 2, 2'contact the molten metal 4 has (1) good heat resistance (2) good thermal shock resistance (3) thermal deformation amount (4) Material with good releasability of solidified material such as boron nitride (BN), Al 2 O 3 + graphite, drum 1,1 ′
The part 2b that slides around the end face of the is hard and has excellent wear resistance. (5) Sufficient heat insulation is required by using a refractory material consisting of BN + Si 3 N 4 to satisfy all the functions required for the fixed weir. You can
本発明の具体例を示すと、鋼を鋳造する場合の構成部材
の寸法並びに諸条件は次のとおりである。To show a specific example of the present invention, the dimensions and various conditions of the constituent members when casting steel are as follows.
（１） 水冷鋳造ドラム 鋼製で内部水冷方式であり、ロール直径2,000mmφロー
ル幅1,200mmの水冷鋳造ロールを使用する。鋳片寸法は3
mmt×1200mm幅であり、このときののロール回転速度は
約28m/minである。(1) Water-cooled casting drum A water-cooled casting roll made of steel and having an internal water-cooling method with a roll diameter of 2,000 mm and a roll width of 1,200 mm is used. The slab size is 3
The width is mmt × 1200 mm, and the roll rotation speed at this time is about 28 m / min.
（２） 固定せき ドラム端面周囲との摺接部を覆うＹ字型部分をSi8N4＋B
Nで作り、Al2O3＋グラファイトで作った固定せきに上記
のＹ字型部分を植設した。(2) The fixed weir Si 8 N 4 + B is used to cover the Y-shaped part that covers the sliding contact with the peripheral surface of the drum.
The Y-shaped part was planted in a fixed weir made of N 2 and made of Al 2 O 3 + graphite.
（３） 溶湯 通常の鋼の場合タンデイツシユ内溶湯温度1520〜1560℃
である。(3) Molten metal In the case of ordinary steel, the temperature of the molten metal in the tundish is 1520 to 1560 ° C.
Is.
以上の諸条件で鋳造しブレークアウト等の操業トラブル
もなく、良好な鋳片を安定して得ることができた。すな
わち、固定せき材料としてドラム端面周囲との摺接部を
覆うＹ字型部分をSi2N4＋BNで構成し、その他の部分をA
l2O3＋グラファイトで構成した結果、ドラム摺動による
接触部での摩耗による製造する鋳片の板巾変動の発生が
なくなり、また、固定せき材料の破損がなくなり、安定
した鋳造が可能となつた。Casting under the above conditions, there was no operational trouble such as breakout, and good cast pieces could be stably obtained. That is, the Y-shaped portion that covers the sliding contact portion with the periphery of the drum end surface is made of Si 2 N 4 + BN as the fixed dam, and the other portion is A
As a result of being composed of l 2 O 3 + graphite, there is no variation in the width of the cast slab produced due to wear at the contact part due to drum sliding, and there is no damage to the fixed dam and stable casting is possible. Natsuta.
本発明は、上記の構成を採用することにより、固定せき
がドラム端面周囲と摺接する部分の摩耗や破損を大幅に
抑制することができ、また、溶湯との接触部分での熱変
形が生ぜず、その結果、鋳片の板幅変動が生ぜず、安定
した鋳造が可能となる効果が生ずる。According to the present invention, by adopting the above-mentioned configuration, it is possible to significantly suppress the wear and damage of the portion where the fixed dam slides in contact with the periphery of the drum end surface, and the thermal deformation does not occur at the contact portion with the molten metal. As a result, the plate width of the cast slab does not fluctuate and stable casting is possible.
第１図は本発明の実施例である薄板連続鋳造装置の縦断
面図であり、第２図は第１図の固定せきの拡大詳細図、
第３図は第２図Ａ−Ａ線断面図である。第４図は従来の
薄板連続鋳造装置における固定せきの拡大詳細図、第５
図は同固定せきの断面図である。FIG. 1 is a vertical cross-sectional view of a thin plate continuous casting apparatus which is an embodiment of the present invention, and FIG. 2 is an enlarged detailed view of a fixed weir of FIG.
FIG. 3 is a sectional view taken along the line AA in FIG. FIG. 4 is an enlarged detailed view of a fixed weir in a conventional thin plate continuous casting apparatus, FIG.
The figure is a sectional view of the fixed weir.
Claims (1)
持して水平に並設され、互いに反対方向に回転する一対
の水冷ドラムと、この水冷ドラムの両端面に押し当てた
２個の固定せきで形成される空間に溶湯を注ぎ、薄板を
得る薄板連続鋳造装置において、水冷ドラム端面周囲の
円弧のうち、上記水冷ドラムの中立点よりやや下方の位
置から上方に向かう円弧を覆うように、全体としてＹ字
型のBNとSi3N4からなる耐火材を上記固定せきに植設し
たことを特徴とする薄板連続鋳造装置。1. A pair of water-cooling drums, which are horizontally arranged side by side with a gap corresponding to the thickness of the metal strip to be produced, and rotate in opposite directions, and two pressed against both end faces of the water-cooling drum. In a thin plate continuous casting device for pouring molten metal into the space formed by the fixed weir to obtain a thin plate, of the arc around the end surface of the water cooling drum, cover the arc that goes upward from a position slightly lower than the neutral point of the water cooling drum. Further, a thin plate continuous casting apparatus characterized in that a refractory material composed of Y-shaped BN and Si 3 N 4 as a whole is planted in the fixed weir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61004338A JPH0749138B2 (en) | 1986-01-14 | 1986-01-14 | Thin plate continuous casting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61004338A JPH0749138B2 (en) | 1986-01-14 | 1986-01-14 | Thin plate continuous casting equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62166054A JPS62166054A (en) | 1987-07-22 |
| JPH0749138B2 true JPH0749138B2 (en) | 1995-05-31 |
Family
ID=11581654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61004338A Expired - Fee Related JPH0749138B2 (en) | 1986-01-14 | 1986-01-14 | Thin plate continuous casting equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0749138B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS635855A (en) * | 1986-06-25 | 1988-01-11 | Kawasaki Steel Corp | Short side mold for cast strip continuous casting |
| JP3684138B2 (en) * | 2000-05-17 | 2005-08-17 | 新日本製鐵株式会社 | Ceramic plate material for twin drum side cast side weir |
| JP4873626B2 (en) * | 2006-10-12 | 2012-02-08 | 学校法人常翔学園 | Twin roll type vertical casting apparatus and composite material sheet manufacturing method |
| US10046384B2 (en) | 2015-09-30 | 2018-08-14 | Nucor Corporation | Side dam with pocket |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6214151U (en) * | 1985-07-12 | 1987-01-28 |
-
1986
- 1986-01-14 JP JP61004338A patent/JPH0749138B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62166054A (en) | 1987-07-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1220606A (en) | Refractory coating of edge-dam blocks for the purpose of preventing longitudinal bands of sinkage in the product of a continuous casting machine | |
| JPS60162557A (en) | Continuous casting device for thin plate | |
| JPH0749138B2 (en) | Thin plate continuous casting equipment | |
| JPS60162558A (en) | Continuous casting device for thin plate | |
| JPH0562019B2 (en) | ||
| JPS60170559A (en) | Continuous casting device | |
| EP0265164B1 (en) | Method and apparatus for producing rapidly solidified metallic tapes | |
| JPS6149755A (en) | Apparatus for continuous casting of thin sheet | |
| JP2792739B2 (en) | Continuous casting equipment for thin cast slabs | |
| JPS62259641A (en) | Production of clad steel plate | |
| JPS60130450A (en) | Continuous casting device for thin sheet | |
| JPS61286045A (en) | Continuous casting device | |
| JPH0659527B2 (en) | Thin plate continuous casting equipment | |
| JPS60162555A (en) | Continuous casting device for thin plate | |
| JPS63126650A (en) | Twin roll type thin sheet directly continuous casting apparatus | |
| JPS6277152A (en) | Method and apparatus for continuous casting of thin sheet using twin rolls | |
| JPS60162556A (en) | Continuous casting device for thin plate | |
| JPS60148646A (en) | Continuous casting device of twin drum type for thin sheet | |
| JPS60170562A (en) | Continuous casting device for thin sheet | |
| JPH0328991Y2 (en) | ||
| JPH054926Y2 (en) | ||
| JPS61289949A (en) | Continuous casting device for thin sheet | |
| US4580615A (en) | Apparatus for closing the sides of a substantially rectangular mold chamber in a continuous casting installation | |
| JPH01317659A (en) | Twin roll type continuous casting apparatus | |
| JPS6227314Y2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |