JP3085351B2 - Lubricated side dam for twin-drum continuous sheet casting machine - Google Patents
Lubricated side dam for twin-drum continuous sheet casting machineInfo
- Publication number
- JP3085351B2 JP3085351B2 JP07273068A JP27306895A JP3085351B2 JP 3085351 B2 JP3085351 B2 JP 3085351B2 JP 07273068 A JP07273068 A JP 07273068A JP 27306895 A JP27306895 A JP 27306895A JP 3085351 B2 JP3085351 B2 JP 3085351B2
- Authority
- JP
- Japan
- Prior art keywords
- drum
- side weir
- casting machine
- twin
- continuous sheet
- 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
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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薄板連続
鋳造機の潤滑サイド堰に関し、特に、鋳造時に冷却ドラ
ムの端面とサイド堰との間を潤滑するサイド堰に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lubricating side weir for a twin-drum continuous sheet casting machine, and more particularly to a side weir for lubricating between an end face of a cooling drum and a side weir during casting.
【０００２】[0002]
【従来の技術】近年、溶鋼等の溶融金属から最終形状に
近い数mm程度の厚みをもつ金属薄板を直接的に製造する
連続鋳造方法が注目されている。この連続鋳造方法で金
属薄板を製造する場合は、従来のような多段階にわたる
熱延工程を必要とせず、また最終形状にする圧延も軽度
なもので良いため、工程及び設備の簡略化を図ることが
できる。2. Description of the Related Art In recent years, a continuous casting method for directly manufacturing a thin metal sheet having a thickness of about several mm close to a final shape from molten metal such as molten steel has attracted attention. When a metal sheet is manufactured by this continuous casting method, the conventional hot rolling process does not need to be performed in multiple stages, and the rolling to the final shape may be light, so that the process and equipment are simplified. be able to.
【０００３】このような連続鋳造法の一つとして、双ド
ラム法がある（特開昭６０−１３７５６２号公報参
照）。図２（ａ）および（ｂ）は、この双ドラム法の概
略を説明するための（ａ）正面図、（ｂ）側面図であ
る。この方式においては、同図に示すように、互いに逆
方向に回転する一対の冷却ドラム３ａ，３ｂ及びサイド
堰５ａ，５ｂにより区画された凹部に湯溜まり部１を形
成する。溶融金属は、タンディシュ等の容器から注湯ノ
ズル２を介して、この湯溜まり部１に注湯される。湯溜
まり部１に収容された溶融金属１２は、冷却ドラム３
ａ，３ｂと接する部分が冷却・凝固して凝固シェルとな
る。この凝固シェルは、冷却ドラム３ａ，３ｂの回転に
随伴され、一対の冷却ドラム３ａ，３ｂが互いに最も接
近した位置で向かい合う、いわゆるドラムキャップ部に
移動する。このドラムキャップ部では、それぞれの冷却
ドラム３ａ，３ｂの表面で形成された凝固シェルが互い
に圧着され、目的とする薄板（鋳片）６となる。As one of such continuous casting methods, there is a twin drum method (see Japanese Patent Application Laid-Open No. 60-137562). FIGS. 2A and 2B are a front view and a side view, respectively, for explaining the outline of the twin drum method. In this method, as shown in the figure, a pool 1 is formed in a recess defined by a pair of cooling drums 3a and 3b and side dams 5a and 5b rotating in opposite directions. The molten metal is poured from a container such as a tundish through a pouring nozzle 2 into the pool 1. The molten metal 12 stored in the pool 1 is cooled by the cooling drum 3
The portions in contact with a and 3b are cooled and solidified to form a solidified shell. This solidified shell is accompanied by the rotation of the cooling drums 3a and 3b, and moves to a so-called drum cap portion where the pair of cooling drums 3a and 3b face each other at a position closest to each other. In the drum cap portion, the solidified shells formed on the surfaces of the respective cooling drums 3a and 3b are pressed together to form a target thin plate (slab) 6.
【０００４】このような薄板連続鋳造機のサイド堰は、
一般に、実開昭６３−９０５４８号公報に見られるよう
に、サイド堰ケースに収容された断熱材と、該断熱材に
植設されたベース部材と、該ベース部材の冷却ドラムに
対応する面に植設されたセラミックスより構成されてい
る。そして、鋳造時は、サイド堰を冷却ドラム端面に押
し付け、上記セラミックスを冷却ドラムによって摩耗さ
せることによって隙間をなくして、溶鋼洩れを防止して
いる。また、サイド堰は、特開昭６１−２６６１６０号
公報で開示されているように、一般に、焼き付きや鋳バ
リの防止、さらには表面性状安定化のために振動が与え
られているため、前記セラミックスの摩耗は、このよう
な振動によっても助長されている。[0004] The side weir of such a continuous sheet casting machine,
Generally, as seen in Japanese Utility Model Laid-Open Publication No. 63-90548, a heat insulating material accommodated in a side weir case, a base member implanted in the heat insulating material, and a surface of the base member corresponding to a cooling drum are provided. It is composed of implanted ceramics. During casting, the side dam is pressed against the end face of the cooling drum, and the ceramic is worn by the cooling drum, thereby eliminating a gap and preventing leakage of molten steel. Further, as disclosed in Japanese Patent Application Laid-Open No. Sho 61-266160, the side weir is generally subjected to vibration to prevent seizure and casting burrs and to stabilize the surface properties. Is also promoted by such vibration.
【０００５】前記薄板連続鋳造機における鋳造可能量
は、この摺動に伴うサイド堰のセラミックスの摩耗速度
によって決まる。従って、セラミックスの摩耗を抑制す
ることが鋳造量の増大を図る上で極めて重要である。こ
のようなセラミックスの摩耗は、硬度、表面粗度、温度
等の因子に影響されると考えられるので、セラミックス
の摩耗を抑制するために、冷却ドラムの摺動面に接する
セラミックスの摩耗面に中間層として潤滑剤を供給する
ことが有効である。これにより、冷却ドラム端面の表面
温度が低下し、冷却ドラム端面の荒れを防止することが
できる。また、前記摺動面（摩擦面）の摩擦係数を低減
させることができる。その結果、サイド堰の解放が抑制
され、溶鋼シール性の向上が可能になる。なお、摺動面
は、摩擦熱や溶融金属からの伝熱で高温となり且つ構造
上狭隘部であるため、従来の潤滑油供給やグリース充填
等では、油の蒸発やグリースの炭化などにより潤滑層が
維持できない問題がある。そのため、この場合、使用可
能温度域の高い固体潤滑剤の適用が不可欠である。そこ
で、前記摩耗面に潤滑剤を供給する手段として、特開昭
６３−２４８５４７号公報で、固体潤滑剤をドラム端面
に押し付ける方法及び構造が提案されている。[0005] The castable amount in the continuous sheet casting machine is determined by the wear rate of the ceramics of the side dam due to the sliding. Therefore, it is extremely important to suppress the wear of the ceramics in order to increase the casting amount. The wear of such ceramics is considered to be affected by factors such as hardness, surface roughness, and temperature. It is effective to supply a lubricant as a layer. Thereby, the surface temperature of the cooling drum end surface decreases, and it is possible to prevent the cooling drum end surface from becoming rough. Further, the friction coefficient of the sliding surface (friction surface) can be reduced. As a result, the release of the side weir is suppressed, and the sealing performance of molten steel can be improved. Since the sliding surface is hot due to frictional heat and heat transfer from the molten metal and is a narrow space in the structure, conventional lubricating oil supply and grease filling, etc., require the lubrication layer due to oil evaporation and grease carbonization. There is a problem that can not be maintained. Therefore, in this case, application of a solid lubricant having a high usable temperature range is indispensable. Therefore, as a means for supplying a lubricant to the wear surface, Japanese Patent Application Laid-Open No. 63-24847 proposes a method and a structure for pressing a solid lubricant against an end face of a drum.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、上記の
潤滑剤供給構造では、ドラム端面に押し付けられ、研削
された潤滑剤がドラムとサイド堰セラミックスプレート
の間隙に噛み込み難く、サイド堰全面の摩耗抑制が不安
定である。本発明は、このような問題を解決して、安定
して長時間の鋳造を可能とする双ドラム式薄板連続鋳造
機の潤滑サイド堰を提供するものである。However, in the above-described lubricant supply structure, the lubricant which is pressed against the end face of the drum and is hardly caught in the gap between the drum and the ceramic plate of the side weir is suppressed from abrading the entire surface of the side weir. Is unstable. SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and provides a lubricated side weir of a twin-drum continuous sheet casting machine capable of stably casting for a long time.
【０００７】[0007]
【課題を解決するための手段】本発明は、一対の冷却ド
ラムとサイド堰との間に形成した湯溜まり部に溶融金属
を注入し、ついで該溶融金属を前記冷却ドラムの回転周
面で冷却、凝固させながら薄板を製造する双ドラム式薄
板連続鋳造機の冷却ドラムとサイド堰との摺動面に固体
潤滑剤を押し付けつつ順次供給する潤滑サイド堰におい
て、ドラム端面とサイド堰プレート面の距離が接触開始
点まで次第に狭っていくサイド堰プレート形状としたこ
とを特徴とする薄板連続鋳造機の潤滑サイド堰である。According to the present invention, a molten metal is poured into a pool formed between a pair of cooling drums and a side weir, and then the molten metal is cooled by a rotating peripheral surface of the cooling drum. The distance between the end face of the drum and the surface of the side weir plate in a lubricated side weir that supplies solid lubricant sequentially to the sliding surface between the cooling drum and the side weir of a twin-drum type continuous continuous sheet casting machine that manufactures a thin plate while solidifying. Is a lubricated side weir of a continuous sheet casting machine, characterized in that it has a side weir plate shape gradually narrowing to a contact start point.
【０００８】[0008]
【発明の実施の形態】本発明は、冷却ドラム端面の摺動
面を介してサイド堰の摩耗面に潤滑剤を供給し、かつ、
ドラム端面とサイド堰プレート面の距離が接触開始点ま
で次第に狭っていくサイド堰プレート形状としたため、
ドラム端面に付着した潤滑剤が端面と接触を開始するサ
イド堰プレートのエッジ部で掻き落される現象を回避
し、ドラム端面とセラミックスプレート間隙への潤滑剤
の噛み込みを安定化する。これにより、安定した長時間
の鋳造を可能にする。DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the present invention, a lubricant is supplied to a wear surface of a side weir via a sliding surface of a cooling drum end face, and
Since the distance between the drum end surface and the side weir plate surface is gradually reduced to the contact start point, the side weir plate shape is used.
This prevents the lubricant adhering to the end face of the drum from being scraped off at the edge of the side weir plate, which starts to contact the end face, and stabilizes the lubrication of the lubricant into the gap between the end face of the drum and the ceramic plate. This enables stable long-time casting.
【０００９】以下、本発明を図面に基づいて詳細に説明
する。先ず、本発明で用いるサイド堰について図１、図
２により説明する。図において、サイド堰５ａの外側は
サイド堰ケース（図示略）に覆われ、冷却ドラム１ｂの
端面９に接する面は、断熱材、ベース部材、その上に植
設されたセラミックス１０で構成されている。セラミッ
クス１０は、冷却ドラム端面９の摺動面が摺動する面、
すなわち摩耗面に沿って設けられている。ドラム摺動方
向のセラミックスプレート１０の断面は、図１で示すよ
うに曲面形状を呈し、切削された潤滑剤がドラム端面９
とセラミックス１０の間に噛み込み易い形状としてあ
る。Hereinafter, the present invention will be described in detail with reference to the drawings. First, the side weir used in the present invention will be described with reference to FIGS. In the figure, the outside of the side weir 5a is covered with a side weir case (not shown), and the surface in contact with the end surface 9 of the cooling drum 1b is composed of a heat insulating material, a base member, and ceramics 10 implanted thereon. I have. The ceramic 10 has a surface on which the sliding surface of the cooling drum end surface 9 slides,
That is, it is provided along the wear surface. The cross section of the ceramic plate 10 in the drum sliding direction has a curved shape as shown in FIG.
It is shaped so that it can easily bite between the ceramic 10 and the ceramic.
【００１０】潤滑剤の供給口にはガイドパイプ１３を設
けており、その中に潤滑剤８が移動可能に挿入されてい
る。潤滑剤押し付け装置は、シリンダー７と該シリンダ
ー７のロッド１４先端部に設けられた潤滑剤支持部より
構成され、潤滑剤８は該支持部で支持されて、所定の面
圧で冷却ドラム端面９の摺動面へ押し付けられる。な
お、押し付け装置は、前記構造に限定されるものではな
く、潤滑剤を所定の面圧で摺動面に押し付けることがで
きるものであればよい。A guide pipe 13 is provided at the lubricant supply port, and the lubricant 8 is movably inserted therein. The lubricant pressing device is composed of a cylinder 7 and a lubricant supporting portion provided at the tip of the rod 14 of the cylinder 7, and the lubricant 8 is supported by the supporting portion, and the cooling drum end face 9 has a predetermined surface pressure. Is pressed against the sliding surface. Note that the pressing device is not limited to the above structure, and may be any device that can press the lubricant against the sliding surface with a predetermined surface pressure.
【００１１】[0011]
【実施例】上記装置を用いて、以下の実験をおこなっ
た。実験に用いた水冷ドラムの端面は、銅母材にＮｉめ
っきし、その上にＣｏ−Ｍｏ系合金を溶射した構成を有
する。サイド堰の水冷ドラム端面への押し付け面圧は３
kg／cm2 、摺動速度は８０ｍ／min とした。サイド堰の
ドラム回転方向のドラム端面と接触を開始する１０mm厚
みのセラミックスには、図１に示すような半径１０mmの
曲面加工を端部１１に施してある。この装置に、固体潤
滑剤として、直径１０mmの円形状のホットプレスで焼結
したＢＮ材を用い、水冷ドラム摺動面への固体潤滑剤の
押し付け面圧を２．５kg／cm2 として強制潤滑を施し
た。EXAMPLES The following experiments were conducted using the above apparatus. The end surface of the water-cooled drum used in the experiment has a configuration in which a copper base material is plated with Ni and a Co-Mo alloy is sprayed thereon. The surface pressure of the side weir against the water cooling drum end face is 3
kg / cm 2 , and the sliding speed was 80 m / min. As shown in FIG. 1, a curved surface having a radius of 10 mm as shown in FIG. 1 is applied to the end portion 11 of the ceramic having a thickness of 10 mm, which starts contact with the drum end surface in the drum rotation direction of the side weir. For this device, a BN material sintered by a circular hot press having a diameter of 10 mm was used as a solid lubricant, and the pressure of the solid lubricant pressed against the sliding surface of the water-cooled drum was set to 2.5 kg / cm 2 for forced lubrication. Was given.
【００１２】従来のサイド堰と本発明のサイド堰の潤滑
効果を、冷却ドラム端面とサイド堰セラミックスプレー
トの摩耗量で評価した。図３と図４に摺動距離とドラム
端面の摩耗量、セラミックスの摩耗量を示す。何れも大
幅に摩耗量が減少し、潤滑剤使用時の効果が認められ
た。すなわち、本願の噛み込み効果が表れたものであ
る。The lubrication effect of the conventional side weir and the side weir of the present invention was evaluated by the wear amount of the cooling drum end face and the side weir ceramic plate. 3 and 4 show the sliding distance, the amount of wear on the drum end face, and the amount of ceramic wear. In each case, the amount of wear was significantly reduced, and the effect of using a lubricant was recognized. That is, the biting effect of the present invention is exhibited.
【００１３】なお、本発明は、ドラム式連続鋳造機でサ
イド堰をドラム端部に押し付ける構造のものであれば、
単ドラム式薄板連続鋳造機にも適用可能である。The present invention provides a drum type continuous casting machine having a structure in which a side weir is pressed against a drum end.
The present invention is also applicable to a single drum type continuous casting machine for a thin plate.
【００１４】[0014]
【発明の効果】本発明の双ドラム式薄板連続鋳造機の潤
滑サイド堰によれば、冷却ドラム端面側に潤滑剤を所定
の面圧を押し付けるだけで、安価で簡便な本発明の特徴
とするサイド堰プレート形状により、摺動面全域に潤滑
剤を噛み込ませることが可能となり、ドラム端面とサイ
ド堰セラミックスの摩耗が抑制できる。そのため、本発
明により、安定して長時間の鋳造が可能となり、工業的
価値が高いものである。According to the lubricating side dam of the twin drum type continuous casting machine of the present invention, the present invention is characterized by being inexpensive and simple simply by pressing a predetermined surface pressure of the lubricant against the end face of the cooling drum. With the shape of the side weir plate, the lubricant can be made to bite into the entire sliding surface, so that the wear of the drum end surface and the side weir ceramics can be suppressed. Therefore, according to the present invention, casting can be stably performed for a long time, and the industrial value is high.
【図１】本発明に係る実施例を説明するための断面図
（図２（ａ）のＡＡ断面図）である。FIG. 1 is a cross-sectional view (AA cross-sectional view of FIG. 2A) for explaining an embodiment according to the present invention.
【図２】本発明に係る双ドラム式薄板連続鋳造機の概略
説明図で、（ａ）正面図、（ｂ）側面図である。FIG. 2 is a schematic explanatory view of a twin-drum type continuous casting machine for a thin sheet according to the present invention, in which (a) is a front view and (b) is a side view.
【図３】本発明と従来品の摺動距離とドラム端面の摩耗
量の関係を示す図である。FIG. 3 is a diagram showing a relationship between a sliding distance of the present invention and a conventional product and a wear amount of a drum end surface.
【図４】本発明と従来品の摺動距離とサイド堰のセラミ
ックスの摩耗量の関係を示す図である。FIG. 4 is a diagram showing a relationship between a sliding distance of the present invention and a conventional product and a wear amount of ceramics of side dams.
１…溶鋼（湯溜まり） ２…注湯ノズル ３ａ，３ｂ…冷却ドラム ４ａ，４ｂ…ドラム軸 ５…サイド堰（鋳型短辺） ６…鋳片（薄帯） ７…潤滑剤押し付けシリンダー ８…固体潤滑剤 ９…ドラム端面 １０…サイド堰セラミックス １１…サイド堰セラミックス端部 １２…溶融金属 １３…ガイドパイプ １４…ロッド DESCRIPTION OF SYMBOLS 1 ... Molten steel (puddle) 2 ... Pouring nozzle 3a, 3b ... Cooling drum 4a, 4b ... Drum shaft 5 ... Side dam (short side of a mold) 6 ... Slab (thin strip) 7 ... Cylinder for pressing a lubricant 8 ... Solid Lubricant 9 ... Drum end face 10 ... Side weir ceramic 11 ... Side weir ceramic end 12 ... Molten metal 13 ... Guide pipe 14 ... Rod
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平４−322850（ＪＰ，Ａ) 特開 昭63−248547（ＪＰ，Ａ) 特開 平１−273653（ＪＰ，Ａ) 特開 平４−81250（ＪＰ，Ａ) 特開 平９−85392（ＪＰ，Ａ) 特開 平６−15416（ＪＰ，Ａ) 実開 昭62−61347（ＪＰ，Ｕ) 実開 平２−76649（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) B22D 11/06 330 B22D 11/07 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-322850 (JP, A) JP-A-64-248547 (JP, A) JP-A-1-273653 (JP, A) JP-A-4- 81250 (JP, A) JP-A-9-85392 (JP, A) JP-A-6-15416 (JP, A) JP-A 62-61347 (JP, U) JP-A 2-76649 (JP, U) (58) Field surveyed (Int. Cl. 7 , DB name) B22D 11/06 330 B22D 11/07
Claims (1)
成した湯溜まり部に溶融金属を注入し、ついで該溶融金
属を前記冷却ドラムの回転周面で冷却、凝固させながら
薄板を製造する双ドラム式薄板連続鋳造機の冷却ドラム
とサイド堰との摺動面に固体潤滑剤を押し付けつつ順次
供給する潤滑サイド堰において、ドラム端面とサイド堰
プレート面の距離が接触開始点まで次第に狭っていくサ
イド堰プレート形状としたことを特徴とする薄板連続鋳
造機の潤滑サイド堰。1. A molten metal is poured into a pool formed between a pair of cooling drums and a side weir, and then the molten metal is cooled and solidified on the rotating peripheral surface of the cooling drum to produce a thin plate. In a lubricated side weir that successively supplies a solid lubricant to a sliding surface between a cooling drum and a side weir of a twin-drum continuous sheet casting machine, a distance between a drum end surface and a side weir plate surface gradually narrows to a contact start point. A lubricated side weir for a continuous sheet casting machine, characterized by a side weir plate shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07273068A JP3085351B2 (en) | 1995-10-20 | 1995-10-20 | Lubricated side dam for twin-drum continuous sheet casting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07273068A JP3085351B2 (en) | 1995-10-20 | 1995-10-20 | Lubricated side dam for twin-drum continuous sheet casting machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09108788A JPH09108788A (en) | 1997-04-28 |
| JP3085351B2 true JP3085351B2 (en) | 2000-09-04 |
Family
ID=17522705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP07273068A Expired - Lifetime JP3085351B2 (en) | 1995-10-20 | 1995-10-20 | Lubricated side dam for twin-drum continuous sheet casting machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3085351B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1072053C (en) * | 1997-02-17 | 2001-10-03 | 新日本制铁株式会社 | Twin drum type sheet steel continuous casting device and continuous casting method therefor |
| US6202792B1 (en) | 1997-12-20 | 2001-03-20 | Pohang Iron & Steel Co., Ltd. | Apparatus for lubricating edge dam in twin-roll type strip casting machine, and method therefor |
| KR100368281B1 (en) * | 1998-12-21 | 2003-03-17 | 주식회사 포스코 | An apparatus for preventing edge dam from wearing in twin roll type strip caster |
| DE102007040578A1 (en) * | 2007-08-28 | 2009-03-05 | Esk Ceramics Gmbh & Co. Kg | Side plate for thin strip casting of steel |
-
1995
- 1995-10-20 JP JP07273068A patent/JP3085351B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09108788A (en) | 1997-04-28 |
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