JP3058268B2 - Side dam for twin drum type continuous casting machine - Google Patents
Side dam for twin drum type continuous casting machineInfo
- Publication number
- JP3058268B2 JP3058268B2 JP10086876A JP8687698A JP3058268B2 JP 3058268 B2 JP3058268 B2 JP 3058268B2 JP 10086876 A JP10086876 A JP 10086876A JP 8687698 A JP8687698 A JP 8687698A JP 3058268 B2 JP3058268 B2 JP 3058268B2
- Authority
- JP
- Japan
- Prior art keywords
- drum
- twin
- metal case
- base member
- casting machine
- 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
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- Continuous Casting (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、双ドラム式連続鋳
造において用いられるサイド堰に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a side weir used in twin-drum continuous casting.
【０００２】[0002]
【従来の技術】従来から一般に知られている例えば双ド
ラム式連続鋳機を用いた広幅薄肉鋳片の連続鋳造におい
ては、図１に示されるように、回転する一対の冷却ドラ
ム１ａ，１ｂと、このドラムの両端面に押し当てられた
一対のサイド堰２ａ，２ｂとによって形成された湯溜り
部３に溶湯ｅを供給し、供給した溶湯を冷却ドラムによ
って冷却し凝固シェルを形成し、この凝固シェルを冷却
ドラムの最接近部において圧接・一体化して広幅薄肉鋳
片ｃを得るようになっている。2. Description of the Related Art In continuous casting of wide and thin cast slabs using, for example, a twin drum type continuous casting machine, which is generally known in the art, as shown in FIG. The molten metal e is supplied to a pool 3 formed by a pair of side dams 2a and 2b pressed against both end surfaces of the drum, and the supplied molten metal is cooled by a cooling drum to form a solidified shell. The solidified shell is pressed and integrated at the closest part of the cooling drum to obtain a wide thin cast slab c.
【０００３】サイド堰２ａ，２ｂは、湯溜り部３の溶湯
ｅをシールするために必要不可欠なものであり、一般に
はこのようなサイド堰は例えば実開昭６３−９０５４８
号公報に開示されているように、図２（断面図）のよう
に構成されている。The side weirs 2a and 2b are indispensable for sealing the molten metal e in the pool 3 and generally such side weirs are disclosed in, for example, Japanese Utility Model Laid-Open No. 63-90548.
As disclosed in Japanese Unexamined Patent Application Publication No. H10-209, the configuration is as shown in FIG. 2 (cross-sectional view).
【０００４】即ち、サイド堰２は、底板４ａと側板４ｂ
からなるサイド堰ケース４と、このケースに収容された
断熱性耐火材５と、この耐火材に植設されたベース部材
６と、このベース部材に内蔵されたヒータ８と、ベース
部材に植設されたセラミックスプレート７とからなって
いる。なお、サイド堰ケース４の背面に熱変形を防止す
るための補剛体（図示略）が取付けられたものも知られ
ている。That is, the side weir 2 comprises a bottom plate 4a and a side plate 4b.
, A heat insulating refractory material 5 housed in the case, a base member 6 planted in the refractory material, a heater 8 built in the base member, and a plant member in the base member. And a ceramics plate 7 formed. It is known that a stiffener (not shown) for preventing thermal deformation is attached to the back of the side weir case 4.
【０００５】鋳造中は、サイド堰と回転する冷却ドラム
端面との間から溶湯が漏れないようにする必要があり、
そのためにはサイド堰はドラム端面に密着して摺動接触
する必要があり、ドラム端面に十分に適合する形状を有
することが必要である。During casting, it is necessary to prevent molten metal from leaking from between the side weir and the end surface of the rotating cooling drum.
For this purpose, the side weirs need to be in close sliding contact with the drum end face, and have to have a shape that is sufficiently compatible with the drum end face.
【０００６】[0006]
【発明が解決しようとする課題】しかし、このような機
能を備えているとされるサイド堰を用いても、溶湯漏れ
が発生する場合があり、特に長時間の鋳造時に多く発生
する。溶湯漏れが発生した場合は、その状態が続いてサ
イド堰は短時間でその機能を失い、鋳造の続行が不可能
となる場合があり、また、鋳片はその両端部に鋳バリが
発生してその形状を損なう他に、搬送中に蛇行が発生し
易くなる。鋳バリにより鋳片搬送ライン及び鋳片搬送ラ
インに設けられた圧延機等の損傷を招き、蛇行により鋳
片巻形状の乱れを招く。However, even with the use of a side weir having such a function, molten metal leakage may occur, particularly when casting is performed for a long time. When molten metal leaks, the condition continues, and the side weir loses its function in a short time, making it impossible to continue casting.In addition, casting burrs occur on both ends of the slab. In addition to impairing the shape, meandering tends to occur during transport. The casting burrs cause damage to the slab transport line and the rolling mills provided on the slab transport line, and meandering causes turbulence in the slab winding shape.
【０００７】本発明者は、鋳造後のサイド堰を綿密に調
査した結果、ベース部材同士の間において僅かではある
が目地開きが発生しており、この目地開き部には溶湯が
侵入してベース部材の背面にまで達していた。目地開き
部への溶湯侵入により発生した地金はドラム端面間に巻
き込まれ、ベース部材の背面に達した溶湯は地金となっ
てベース部材を変位させ、その結果、サイド堰と冷却ド
ラム間で間隙が発生するものと考えた。As a result of close examination of the side weir after casting, the present inventor found that joints were slightly opened between the base members. It had reached the back of the member. The metal generated by the intrusion of the molten metal into the joint opening is caught between the drum end faces, and the molten metal reaching the back surface of the base member becomes the metal and displaces the base member. As a result, between the side weir and the cooling drum, It was considered that a gap was generated.
【０００８】そこで本発明は、双ドラム式連続鋳造機を
用いた広幅薄肉鋳片の連続鋳造において、ベース部材の
目地開きを防止することにより、冷却ドラムとサイド堰
との摺動面からの溶湯漏れを防止することを課題とす
る。Accordingly, the present invention provides a method for continuously casting wide and thin cast slabs using a twin-drum type continuous casting machine, by preventing joints of a base member from opening, so that molten metal from a sliding surface between a cooling drum and a side weir is prevented. An object is to prevent leakage.
【０００９】[0009]
【課題を解決するための手段】本発明者等は、図３に示
されるように、上記目地開き部ｍは、ベース部材６の熱
膨張や冷却ドラムの回転力によりベース部材６（特に上
段及び下段の端部）が不定形耐火物５に沈み込む（押し
込む）ことにより生じるものと考え、ベース部材の沈み
込みを防止するように構成したものであり、その要旨
は、底板と側板を有する金属ケースと、この金属ケース
に収容された不定形耐火物と、この不定形耐火物に植設
された上下複数段のベース部材とで構成された双ドラム
式連続鋳造機用サイド堰において、前記ベース部材の背
面と金属ケースの底板の間に支柱部材が設けられている
ことを特徴とする双ドラム式連続鋳造機用サイド堰であ
る。As shown in FIG. 3, the present inventors have found that the joint opening m is formed by the base member 6 (particularly the upper and lower parts) due to the thermal expansion of the base member 6 and the rotational force of the cooling drum. The lower end) is considered to be caused by sinking (pushing) into the irregular-shaped refractory 5, and is configured to prevent sinking of the base member. The gist of the invention is that a metal having a bottom plate and a side plate is provided. A case, an amorphous refractory housed in the metal case, and a plurality of upper and lower base members implanted in the amorphous refractory; A side dam for a twin-drum continuous casting machine, wherein a support member is provided between a back surface of the member and a bottom plate of a metal case.
【００１０】また、別の発明は、前記双ドラム式連続鋳
造機用サイド堰において、上下複数段のベース部材のう
ち最上段のベース部材の上面と不定形耐火物の間に該上
下複数段のベース部材の熱膨張の５０〜１００％を補償
する間隙が形成されていることを特徴とする。更に別の
発明は、前記双ドラム式連続鋳造機用サイド堰におい
て、金属ケースの底板と不定形耐火物の間に熱伝導率が
０．５ｋｃａｌ／ｍ・ｈｒ・℃以下で、かつ、板厚が２
ｍｍ以上の断熱材が設けられていることを特徴とする。Another aspect of the present invention is a side weir for a twin-drum continuous casting machine, wherein the upper and lower multiple-stage base members are arranged between the upper surface of the uppermost base member and the irregular refractory. A gap for compensating 50 to 100% of the thermal expansion of the base member is formed. Still another aspect of the present invention is the side weir for a twin-drum continuous casting machine, wherein the thermal conductivity between the bottom plate of the metal case and the refractory is 0.5 kcal / m · hr · ° C. or less, and the plate thickness is Is 2
It is characterized in that a heat insulating material of at least mm is provided.
【００１１】[0011]
【発明の実施の形態】図４及び図５は本発明の請求項１
に沿うサイド堰を説明する図であり、サイド堰１０の枠
体を形成する金属ケース１１（例えばＳＳ４１製）には
断熱のための不定形耐火物１２（例えばフューズドＳｉ
Ｏ2 質）が収容されており、この不定形耐火物には複数
のベース部材１３（例えば高アルミナ質）が植設されて
いる。4 and 5 show a first embodiment of the present invention.
FIG. 5 is a view for explaining a side weir along the line. A metal case 11 (for example, made of SS41) forming a frame of the side weir 10 has an amorphous refractory 12 (for example, fused Si) for heat insulation.
O 2 quality) are accommodated, a plurality of base members 13 (such as high alumina) are implanted in the monolithic refractories.
【００１２】ベース部材１３は、本実施例では縦方向で
３分割されており、かつ、上段のベース部材１３は左右
で２分割されている。金属ケースの底板１１ａとベース
部材の背面１３ｈの間には、ベース部材１３の不定形耐
火物１２への沈み込みを防止するための支柱部材１５が
わたして設けられており、支柱部材１５の両端は金属ケ
ースの底板１１ａとベース部材の背面１３ｈに当接して
いる。支柱部材１５の設置位置は、各ベース部材１３毎
で冷却ドラムの周縁部（フランジ部）と対面する部位ｆ
の中央部に配置することにより、各ベース部材１３毎で
面圧バランスを得るようになっている。In this embodiment, the base member 13 is vertically divided into three parts, and the upper base member 13 is divided into two parts on the left and right. Between the bottom plate 11a of the metal case and the back surface 13h of the base member, there are provided support members 15 for preventing the base member 13 from sinking into the irregular refractory 12, and both ends of the support member 15 are provided. Is in contact with the bottom plate 11a of the metal case and the back surface 13h of the base member. The installation position of the support member 15 is determined by a position f facing the peripheral edge (flange) of the cooling drum for each base member 13.
Is arranged at the center of the base member 13 so that the surface pressure balance can be obtained for each base member 13.
【００１３】支柱部材１５はＪＩＳ−Ｒ−２２０９で定
められたところの、２ｋｇ／ｃｍ2での荷重軟化点Ｔ2
（２％収縮）が１７００℃以上であることが望ましい。
荷重軟化点Ｔ2 が１７００℃未満であると、前記ベース
部材の沈み込みを十分に防止することができない。ベー
ス部材の押し込みを十分に防止することができる耐火物
としては、Ａｌ2 Ｏ3 を６０％以上含む耐火れんがが最
も適している。The column member 15 has a load softening point T 2 at 2 kg / cm 2 as defined in JIS-R-2209.
(2% shrinkage) is preferably 1700 ° C. or more.
If the load softening point T 2 is less than 1700 ° C., the sinking of the base member cannot be sufficiently prevented. As a refractory capable of sufficiently preventing the base member from being pushed, a refractory brick containing Al 2 O 3 of 60% or more is most suitable.
【００１４】支柱部材１５のサイズは、その強度を得る
ためには大きい方が望ましいが、不定形耐火物の断熱効
果を損なわないよう注意する必要がある。支柱部材１５
の配設数は、図４に示されるように、１個のベース部材
１３について冷却ドラムの周縁部と対面する部位ｆの中
央部に１個だけ設けるか、または中央部から等間隔の位
置に複数個設けてもよい。何れにしても、ベース部材１
３が面圧バランスを得ることが望ましい。The size of the support member 15 is preferably large in order to obtain its strength, but care must be taken so as not to impair the heat insulating effect of the amorphous refractory. Prop member 15
As shown in FIG. 4, only one base member 13 is provided at the center of the portion f facing the peripheral portion of the cooling drum for one base member 13 or at a position equidistant from the center. A plurality may be provided. In any case, the base member 1
It is desirable that 3 obtains the surface pressure balance.
【００１５】つぎに、本発明のサイド堰１０の製造方法
について、その概要を図４及び図５により説明する。個
別のベース部材１３について、金属ケースの底板１１ａ
の冷却ドラムの周縁部と対面する部位ｆの中央部または
中央部から等間隔の位置に支柱部材１５を縦にして配置
する。この場合、必要に応じて予め支柱部材１５の上下
端面に接着材を塗っておく。支柱部材１５の上にベース
部材１３を配置して拘束部材（図示略）により拘束す
る。この状態で金属ケース１１とベース部材１３の間隙
に流動状の不定形耐火物１２を流し込み、不定形耐火物
が乾燥した後、拘束を解く。Next, the outline of the method for manufacturing the side weir 10 of the present invention will be described with reference to FIGS. For the individual base member 13, the bottom plate 11a of the metal case
The column member 15 is vertically arranged at the center of the portion f facing the peripheral portion of the cooling drum or at a position equidistant from the center. In this case, an adhesive is previously applied to the upper and lower end surfaces of the support member 15 as necessary. The base member 13 is arranged on the support member 15 and is restrained by a restraining member (not shown). In this state, the flowable refractory 12 is poured into the gap between the metal case 11 and the base member 13, and after the refractory dries, the constraint is released.
【００１６】なお、サイド堰１０は公知のものと同様
に、ベース部材１３にはＳｉＣ発熱体等を用いたヒータ
が埋設され、金属ケースの底板１１ａの外面には金属ケ
ースの熱変形を防止するために冷却機構付の補剛体が取
付けられ、金属ケースの底板１１ａの内面には不定形耐
火物を固定するためのＹ字状アンカが取付けられること
が望ましいが、説明を簡明にするため図示を省略する。The side weir 10 has a heater using a SiC heating element or the like embedded in the base member 13 similarly to the well-known one, and the outer surface of the bottom plate 11a of the metal case prevents thermal deformation of the metal case. For this purpose, it is preferable that a stiffening body with a cooling mechanism is attached, and a Y-shaped anchor for fixing an irregular refractory is attached to the inner surface of the bottom plate 11a of the metal case. Omitted.
【００１７】このように構成されたサイド堰１０をベー
ス部材１３に埋設したヒータ（図示略）により各耐火物
を所定温度に予熱した後、冷却ドラム９の両端面に当接
させて鋳造を行う。ベース部材１３が鋳造の経過に伴っ
て溶湯熱を受けて過熱し、熱膨張やドラム回転力によっ
て、凸状に湾曲変形しようとするとき（図３）、図４及
び図５に示されるサイド堰１０は、ベース部材の背面１
３ｈが強度の大きい支柱部材１５によって支えられてい
るため、ベース部材の変形目地開きを防止できる。After the refractory is preheated to a predetermined temperature by a heater (not shown) in which the side weir 10 constructed as described above is embedded in the base member 13, it is brought into contact with both end surfaces of the cooling drum 9 to perform casting. . When the base member 13 is overheated by the heat of the molten metal with the progress of casting, and is going to bend into a convex shape due to thermal expansion or drum rotational force (FIG. 3), the side dam shown in FIGS. 10 is the back surface 1 of the base member
Since 3h is supported by the strong column member 15, deformation joint opening of the base member can be prevented.
【００１８】図６及び図７は、本発明の請求項２に沿う
サイド堰２０を説明する図であり、図４及び図５に示さ
れたサイド堰１０と異なる点は、上下複数段のベース部
材１３ａ〜１３ｄのうち最上段のベース部材１３ａ及び
１３ｂの上面と不定形耐火物１２の間にベース部材１３
ａ〜１３ｄの熱膨張の５０〜１００％を補償する間隙１
６が形成されていることである。この間隙１６によっ
て、ベース部材１３ａ〜１３ｄが溶湯熱を受けて熱膨張
するとき、この膨張を間隙１６が吸収するため、ベース
部材の熱膨張による目地開きを防止できる。FIGS. 6 and 7 are views for explaining the side weir 20 according to the second aspect of the present invention. The difference from the side weir 10 shown in FIGS. The base member 13 is located between the upper surface of the uppermost base members 13a and 13b of the members 13a to 13d and the irregular refractory 12.
Gap 1 to compensate for 50-100% of the thermal expansion of a-13d
6 is formed. When the base members 13a to 13d receive the heat of the molten metal and thermally expand by the gap 16, the expansion is absorbed by the gap 16, so that the joint opening due to the thermal expansion of the base member can be prevented.
【００１９】間隙１６を形成する方法は、ベース部材の
熱膨張係数から鋳造中の温度における膨張代を計算によ
って求め、この膨張代に相当する厚さをもつスペーサー
（図示略）をサイド堰製造時に挿入しておき、乾燥後に
除去するか、スペーサーが可燃性であれば除去しなくて
もよい。The method of forming the gap 16 is to calculate the expansion allowance at the temperature during casting from the coefficient of thermal expansion of the base member and calculate a spacer (not shown) having a thickness corresponding to the expansion allowance at the time of manufacturing the side dam. It may be inserted and removed after drying, or may not be removed if the spacer is flammable.
【００２０】図８は、本発明の請求項３に沿うサイド堰
３０を説明する図であり、図４及び図５に示されたサイ
ド堰１０と異なる点は、金属ケースの底板１１ａと不定
形耐火物１２の間に断熱材１８が設けられていることで
ある。断熱材１８は、熱伝導率が０．５ｋｃａｌ／ｍ・
ｈｒ・℃以下で、かつ、板厚が２ｍｍ以上であり、例え
ばＡｌ2 Ｏ3 を主体とするセラミックスの粉体にバイン
ダーを混合し、圧縮成形して造られた、いわゆる断熱ボ
ードが用いられる。この断熱材１８によって、溶湯熱に
よる金属ケース１１の熱変形を防止し、この熱変形によ
るベース部材の目地開きを防止できる。FIG. 8 is a view for explaining a side weir 30 according to claim 3 of the present invention. The difference from the side weir 10 shown in FIGS. 4 and 5 is that the bottom plate 11a of the metal case and the irregular shape are different. The heat insulating material 18 is provided between the refractories 12. The heat insulating material 18 has a thermal conductivity of 0.5 kcal / m ·
A so-called heat insulating board is used, which is formed by mixing a binder with ceramic powder mainly composed of Al 2 O 3 and compressing and molding it, for example, at a temperature of hr · ° C. or less and a plate thickness of 2 mm or more. The heat insulating material 18 can prevent the metal case 11 from being thermally deformed by the heat of the molten metal, and prevent the joint of the base member from being opened due to the thermal deformation.
【００２１】断熱材の熱伝導率が０．５ｋｃａｌ／ｍ・
ｈｒ・℃未満であり、かつ、板厚が２ｍｍ未満である
と、ベース部材や金属ケースの熱変形によるベース部材
の目地開きを十分に防止できない。断熱材１８を設置す
る方法は、前記支柱部材１５の金属ケースの底板１１ａ
への配置と一緒に行えばよい。The thermal conductivity of the heat insulating material is 0.5 kcal / m ·
When the temperature is less than hr · ° C. and the thickness is less than 2 mm, joint opening of the base member due to thermal deformation of the base member or the metal case cannot be sufficiently prevented. The method of installing the heat insulating material 18 is based on the bottom plate 11 a of the metal case of the support member 15.
It should be done together with the arrangement to.
【００２２】図９は、本発明の請求項７に沿うサイド堰
４０を説明する図であり、図４〜図７に示されたサイド
堰１０，２０及び３０と異なる点は、ベース部材１７の
表面の冷却ドラム周縁部と対面する部位ｆ（図４）に沿
って溝（図示略）を設け、この溝に沿って複数（図では
合計１７枚）のセラミックスプレート１４（例えばＳｉ
3 Ｎ4 −ＢＮ−ＡｌＮ質）を植設した点である。FIG. 9 is a view for explaining a side weir 40 according to claim 7 of the present invention. The difference from the side weirs 10, 20, and 30 shown in FIGS. A groove (not shown) is provided along a portion f (FIG. 4) of the surface facing the peripheral edge of the cooling drum, and a plurality of (a total of 17 in the figure) ceramic plates 14 (for example, Si) are provided along the groove.
3 N 4 -BN-AlN material).
【００２３】このセラミックスプレート１４によりドラ
ム端面との摺動がより一層円滑になり、良好なシールと
サイド堰寿命延長の効果が得られる。セラミックスプレ
ート１４を設ける方法は、ベース部材１７の表面の冷却
ドラムの周縁部と対面する部位ｆに設けた溝（図示略）
に複数のセラミックスプレート１４を接着材等により張
り付けた後、その表面を研摩して平坦に仕上げる。The ceramic plate 14 makes the sliding with the end face of the drum smoother, so that good sealing and the effect of extending the life of the side dam can be obtained. The method of providing the ceramics plate 14 is performed by using a groove (not shown) provided at a portion f of the surface of the base member 17 facing the peripheral edge of the cooling drum.
After a plurality of ceramic plates 14 are adhered with an adhesive or the like, the surfaces thereof are polished and finished flat.
【００２４】[0024]
【実施例】図４〜図８に示されたサイド堰１０，２０，
３０，４０を設けた双ドラム式連続鋳造機を用いて、Ｓ
ＵＳ３０４ステンレス鋼の鋳造を行い、幅１２００ｍ
ｍ、厚さ４ｍｍの広幅薄肉鋳片を連続鋳造した。本発明
の実施例では、１時間にわたって溶湯漏れの発生はな
く、形状の良好な鋳片を安定的に鋳造することができ
た。これに対して支柱部材、間隙、断熱材を設けなかっ
た従来例では、冷却ドラムの両端面とサイド堰との摺動
面から溶鋼が漏れ出すことが多く、この状態が続いてサ
イド堰は短時間でその機能を失い、鋳造の続行が不可能
になる場合もあった。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The side weirs 10, 20, shown in FIGS.
Using a twin-drum type continuous casting machine provided with
Cast US304 stainless steel, 1200m wide
m, a wide thin cast piece having a thickness of 4 mm was continuously cast. In the example of the present invention, the molten metal did not leak for one hour, and a cast having a good shape could be stably cast. On the other hand, in the conventional example in which the support member, the gap, and the heat insulating material are not provided, molten steel often leaks from the sliding surface between the both end surfaces of the cooling drum and the side weir, and this state continues, and the side weir is short. In some cases, it lost its function over time, making it impossible to continue casting.
【００２５】[0025]
【発明の効果】本発明の請求項１に沿うサイド堰は、ベ
ース部材の背面に強度の大きい支柱部材が設けられてい
るため、ベース部材の不定形耐火物への沈み込みによる
変形を防止できる。また、請求項２に沿うサイド堰は、
上下複数段のベース部材のうち最上段のベース部材の上
面と不定形耐火物の間にベース部材の熱膨張を補償する
間隙ｇが形成されているため、ベース部材の熱膨張を間
隙ｇが許容すことで、熱膨張による変形を防止できる。According to the side weir of the first aspect of the present invention, since the strong support member is provided on the back surface of the base member, it is possible to prevent the base member from being deformed by sinking into the irregular refractory. . Further, the side weir according to claim 2 is:
Since the gap g for compensating for the thermal expansion of the base member is formed between the upper surface of the uppermost base member of the upper and lower base members and the irregular refractory, the gap g allows the thermal expansion of the base member. This can prevent deformation due to thermal expansion.
【００２６】さらに、請求項３に沿うサイド堰は、金属
ケースの底板と不定形耐火物の間に断熱材が設けられて
いるため、この断熱材によって金属ケースの不均一加熱
による熱変形を防止できる。以上のように、本発明のサ
イド堰は、ベース部材及び金属ケースの熱変形を防止で
きるので、熱変形によるベース部材の目地開き、目地開
きによる地金発生及び溶湯漏れを防止できる。Further, in the side weir according to the third aspect, since a heat insulating material is provided between the bottom plate of the metal case and the refractory, the heat insulating material prevents thermal deformation due to uneven heating of the metal case. it can. As described above, the side weir of the present invention can prevent the base member and the metal case from being thermally deformed, so that the joint opening of the base member due to the thermal deformation, the generation of the metal due to the joint opening, and the molten metal leakage can be prevented.
【図１】図１は、双ドラム式連続鋳造機の斜視図であ
る。FIG. 1 is a perspective view of a twin-drum continuous casting machine.
【図２】図２は、従来のサイド堰の断面図である。FIG. 2 is a sectional view of a conventional side weir.
【図３】図３は、従来のサイド堰におけるベース部材の
目地開きを示す断面図である。FIG. 3 is a cross-sectional view showing a joint opening of a base member in a conventional side weir.
【図４】図４は、本発明の請求項１に沿うサイド堰の正
面図である。FIG. 4 is a front view of a side weir according to claim 1 of the present invention.
【図５】図５は、図４のＹ−Ｙ線断面図である。FIG. 5 is a sectional view taken along line YY of FIG. 4;
【図６】図６は、本発明の請求項２に沿うサイド堰の正
面図である。FIG. 6 is a front view of a side weir according to claim 2 of the present invention.
【図７】図７は、図６のＹ−Ｙ線断面図である。FIG. 7 is a sectional view taken along line YY of FIG. 6;
【図８】図８は、本発明の請求項３に沿うサイド堰の断
面図である。FIG. 8 is a sectional view of a side weir according to claim 3 of the present invention.
【図９】図９は、本発明の請求項７に沿うサイド堰の正
面図である。FIG. 9 is a front view of a side weir according to claim 7 of the present invention.
１ａ，１ｂ…冷却ドラム ２…サイド堰 ２ａ，２ｂ…サイド堰 ３…湯溜り部 ４…サイド堰ケース ４ａ…ケースの底板 ４ｂ…ケースの側板 ５…断熱性耐火物 ６…ベース部材 ７…セラミックスプレート ８…ヒータ ９…冷却ドラム １０…サイド堰 １１…サイド堰の金属ケース １１ａ…ケース底板 １１ｂ…ケース側板 １２…不定形耐火物 １３…ベース部材 １３ａ〜１３ｄ…ベース部材 １３ｈ…ベース部材の背面 １４…セラミックスプレート １５…支柱部材 １６…目地開きの間隙 １７…ベース部材 １８…断熱材 ２０…サイド堰 ３０…サイド堰 ４０…サイド堰 ｆ…冷却ドラムの周縁部と対面する部位 ｃ…広幅薄肉鋳片 ｍ…目地開き部 ｅ…溶湯 1a, 1b cooling drum 2 side dam 2a, 2b side dam 3 pool pool 4 side dam case 4a case bottom plate 4b case side plate 5 heat insulating refractory 6 base member 7 ceramic plate DESCRIPTION OF SYMBOLS 8 ... Heater 9 ... Cooling drum 10 ... Side dam 11 ... Metal case of side dam 11a ... Case bottom plate 11b ... Case side plate 12 ... Irregular refractory 13 ... Base members 13a-13d ... Base member 13h ... Back surface of base member 14 ... Ceramic plate 15 ... pillar member 16 ... joint opening gap 17 ... base member 18 ... heat insulating material 20 ... side weir 30 ... side weir 40 ... side weir f ... part facing the peripheral part of the cooling drum c ... wide thin cast slab m ... Joint opening e ... Molten metal
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平７−68352（ＪＰ，Ａ) 特開 平９−206892（ＪＰ，Ａ) 特開 平７−60410（ＪＰ，Ａ) 特開 平10−249494（ＪＰ，Ａ) 特開 平４−157047（ＪＰ，Ａ) 特開 平４−41050（ＪＰ，Ａ) 実開 平３−101339（ＪＰ，Ｕ) 実開 昭63−150741（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) B22D 11/06 330 ──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-7-68352 (JP, A) JP-A-9-206892 (JP, A) JP-A-7-60410 (JP, A) JP-A-10- 249494 (JP, A) JP-A-4-157047 (JP, A) JP-A-4-41050 (JP, A) JP-A-3-101339 (JP, U) JP-A-63-150741 (JP, U) (58) Field surveyed (Int. Cl. 7 , DB name) B22D 11/06 330
Claims (7)
金属ケースに収容された不定形耐火物と、この不定形耐
火物に植設された上下複数段のベース部材とで構成され
た双ドラム式連続鋳造機用サイド堰において、前記ベー
ス部材の背面と金属ケースの底板の間に支柱部材が設け
られていることを特徴とする双ドラム式連続鋳造機用サ
イド堰。1. A twin drum comprising a metal case having a bottom plate and side plates, an irregular refractory housed in the metal case, and a plurality of upper and lower base members implanted in the irregular refractory. A side weir for a twin-drum continuous caster, wherein a support member is provided between a back surface of the base member and a bottom plate of a metal case.
金属ケースに収容された不定形耐火物と、この不定形耐
火物に植設された上下複数段のベース部材とで構成され
た双ドラム式連続鋳造機用サイド堰において、前記上下
複数段のベース部材のうち最上段のベース部材の上面と
不定形耐火物の間に該上下複数段のベース部材の熱膨張
の５０〜１００％を補償する間隙が形成されていること
を特徴とする双ドラム式連続鋳造機用サイド堰。2. A twin drum comprising a metal case having a bottom plate and side plates, an irregular refractory housed in the metal case, and a plurality of upper and lower base members implanted in the irregular refractory. In a side weir for a continuous caster, 50-100% of the thermal expansion of the upper and lower base members between the upper surface of the uppermost base member and the irregular refractory among the upper and lower base members is compensated. A side weir for a twin drum type continuous casting machine, wherein a gap is formed.
金属ケースに収容された不定形耐火物と、この不定形耐
火物に植設された上下複数段のベース部材とで構成され
た双ドラム式連続鋳造機用サイド堰において、前記金属
ケースの底板と不定形耐火物の間に熱伝導率が０．５ｋ
ｃａｌ／ｍ・ｈｒ・℃以下で、かつ、板厚が２ｍｍ以上
の断熱材が設けられていることを特徴とする双ドラム式
連続鋳造機用サイド堰。3. A twin drum comprising a metal case having a bottom plate and a side plate, an irregular refractory housed in the metal case, and a plurality of upper and lower base members implanted in the irregular refractory. In the side dam for a continuous caster, the thermal conductivity between the bottom plate of the metal case and the refractory is 0.5 k.
A side dam for a twin-drum continuous casting machine, wherein a heat insulating material having a cal / m · hr · ° C. or less and a plate thickness of 2 mm or more is provided.
ムの周縁部と対面する部位に設けられていることを特徴
とする双ドラム式連続鋳造機用サイド堰。4. The side dam for a twin-drum continuous casting machine according to claim 1, wherein the support member is provided at a portion facing the peripheral portion of the cooling drum.
Ｒ−２２０９で定められた、２ｋｇ／ｃｍ2 での荷重軟
化点Ｔ2 （２％収縮）が１７００℃以上であることを特
徴とする双ドラム式連続鋳造機用サイド堰。5. The support member according to claim 1, wherein the support member is JIS-compliant.
A side weir for a twin-drum continuous casting machine, wherein a load softening point T 2 (2% shrinkage) at 2 kg / cm 2 determined by R-2209 is 1700 ° C or more.
3 を６０％以上含む耐火れんがによって形成されている
ことを特徴とする双ドラム式連続鋳造機用サイド堰。6. The support member according to claim 1, wherein the support member is made of Al 2 O.
A side weir for a twin-drum type continuous casting machine, characterized by being formed by a refractory brick containing 60% or more of 3 .
ース部材の表面の冷却ドラムのフランジ部と対面する部
位に沿って複数のセラミックスプレートが植設されてい
ることを特徴とする双ドラム式連続鋳造機用サイド堰。7. The twin-drum continuous type according to claim 1, wherein a plurality of ceramic plates are implanted along a portion of the surface of the base member facing the flange portion of the cooling drum. Side dam for casting machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10086876A JP3058268B2 (en) | 1998-03-31 | 1998-03-31 | Side dam for twin drum type continuous casting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10086876A JP3058268B2 (en) | 1998-03-31 | 1998-03-31 | Side dam for twin drum type continuous casting machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11285785A JPH11285785A (en) | 1999-10-19 |
| JP3058268B2 true JP3058268B2 (en) | 2000-07-04 |
Family
ID=13899045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10086876A Expired - Lifetime JP3058268B2 (en) | 1998-03-31 | 1998-03-31 | Side dam for twin drum type continuous casting machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3058268B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7556084B2 (en) * | 2006-03-24 | 2009-07-07 | Nucor Corporation | Long wear side dams |
-
1998
- 1998-03-31 JP JP10086876A patent/JP3058268B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11285785A (en) | 1999-10-19 |
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