JP3015986B2 - Drum of continuous casting equipment for sheet metal - Google Patents
Drum of continuous casting equipment for sheet metalInfo
- Publication number
- JP3015986B2 JP3015986B2 JP4242539A JP24253992A JP3015986B2 JP 3015986 B2 JP3015986 B2 JP 3015986B2 JP 4242539 A JP4242539 A JP 4242539A JP 24253992 A JP24253992 A JP 24253992A JP 3015986 B2 JP3015986 B2 JP 3015986B2
- Authority
- JP
- Japan
- Prior art keywords
- drum
- face
- casting
- molten steel
- hard
- 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]
【産業上の利用分野】本発明は、金属薄板の連続鋳造設
備のドラムに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drum for a continuous casting machine for sheet metal.
【０００２】[0002]
【従来の技術】ツインドラム式の薄板連続鋳造装置にお
いては、一対の水冷ドラムと、この一対の水冷ドラム端
面に押し付けられる耐火物を埋設したサイド堰が用いら
れる。このサイド堰の耐火物はドラムの回転によってド
ラム端面との摩擦により摩耗し、またドラム端面も摩耗
する。最大鋳造量は凸高さ相当の摩耗に至るまでの時間
によって決まる。2. Description of the Related Art In a twin-drum continuous sheet casting apparatus, a pair of water-cooled drums and side dams in which refractories are pressed against the end surfaces of the pair of water-cooled drums are used. The refractory material of the side weir is worn by friction with the drum end face due to rotation of the drum, and the drum end face is also worn. The maximum casting amount is determined by the time required to reach wear corresponding to the height of the protrusion.
【０００３】摩耗速度は耐火物の硬度だけでなく、端面
の粗度、耐火物〜端面の摩擦係数に影響されるので、硬
質で焼き付き難い端面材質が望まれる。また、端面は周
期的に予熱したサイド堰と接触後、雰囲気に晒され、時
にはサイド堰との隙間に差し込んだ鋳バリと接するの
で、端面材質は耐熱衝撃性に優れなければならない。胴
面側の端面最エッジ部は溶鋼と接するので、耐食性も具
備特性として挙げられる。Since the wear rate is affected not only by the hardness of the refractory but also by the roughness of the end face and the friction coefficient of the refractory to the end face, a hard end face material which is hard to seize is desired. Further, the end face is exposed to the atmosphere after being in contact with the pre-heated side weir periodically, and sometimes comes into contact with the casting burr inserted into the gap between the side weir, so that the end face material must have excellent thermal shock resistance. Since the outermost edge portion of the end surface on the body surface side is in contact with the molten steel, the corrosion resistance is also included as a characteristic.
【０００４】[0004]
【発明が解決しようとする課題】ツインドラム式の薄板
連続鋳造装置では、水冷ドラムの端面にサイド堰を押し
付け、ドラムの回転でサイド堰の耐火物を摩耗させて溶
鋼をシールする。そのため、焼き付きによる面荒れ、熱
衝撃による剥離、溶鋼による溶損によって端面の周方向
に凹凸が発生し、そこに溶鋼が差し込み、鋳バリが発生
する。いずれ鋳バリがドラムに連れ廻ることによって、
サイド堰による溶鋼シールは不可能な状態になる。湯洩
れを抑制するためにサイド堰の押し付け力を上昇する
と、サイド堰の耐火物の摩耗速度は増大し、長時間鋳造
の実現は困難となる。そのため、高い頻度でドラム端面
の補修、手入れが必要となる。In a twin-drum continuous sheet casting apparatus, a side dam is pressed against the end face of a water-cooled drum, and the refractory of the side dam is worn by rotating the drum to seal molten steel. Therefore, surface roughness due to seizure, peeling due to thermal shock, and erosion due to molten steel cause irregularities in the circumferential direction of the end face, where molten steel is inserted, and casting burrs are generated. Eventually, the casting burr will be taken to the drum,
Molten steel sealing by the side weir becomes impossible. When the pressing force of the side weir is increased in order to suppress the leakage of the molten metal, the wear rate of the refractory of the side weir increases, and it becomes difficult to perform casting for a long time. Therefore, it is necessary to frequently repair and maintain the drum end face.
【０００５】たとえば、端面材質として金属系を採用す
ると、焼き付いて面荒れが発生し、摩耗速度が増大す
る。酸化物系を採用すると、熱衝撃によって剥離が発生
し、円周の凹凸によって、また非酸化物系を採用する
と、溶鋼による最エッジ部の溶損によって、いずれの材
質系の場合も溶鋼シールの不良に至る。このような状態
でも、サイド堰の押し付け力の上昇によって溶鋼シール
が可能な場合もあるが、やはりサイド堰の耐火物の摩耗
速度は著しく増大し、長時間鋳造は困難になる。たとえ
サーメットなどの多成分系材質を採用しても互いの短所
を補うには到らず、完全なものではない。従って、端面
に１材質を使用したのでは、溶鋼シールの確保と長時間
鋳造の達成を両方満足することは不可能である。そこ
で、Ｎｉの肉盛り溶接などによって補修し、さらにグラ
インダーなどによって端面の手入れを行うが、その頻度
が非常に高いため効率が悪く、修繕費もかかってしま
う。[0005] For example, if a metal material is adopted as the material of the end surface, the surface is burned and surface roughness occurs, and the wear rate increases. In the case of using an oxide-based material, peeling occurs due to thermal shock, and due to the unevenness of the circumference. Leads to failure. Even in such a state, molten steel sealing may be possible by increasing the pressing force of the side weir, but also the wear rate of the refractory of the side weir significantly increases, and casting for a long time becomes difficult. Even if a multi-component material such as cermet is adopted, it does not make up for the disadvantages of each other and is not perfect. Therefore, if one material is used for the end face, it is impossible to satisfy both securing of the molten steel seal and achievement of long-time casting. Therefore, repair is performed by Ni overlay welding or the like, and the end face is further cleaned by a grinder or the like. However, since the frequency is extremely high, efficiency is poor and repair costs are incurred.
【０００６】本発明の目的は、溶鋼シールの確保と長時
間鋳造を達成するために、焼き付きによる面荒れ、熱衝
撃による剥離、溶鋼による溶損のいずれも発生しない端
面を有する水冷ドラムを得ることにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a water-cooled drum having an end face that does not cause any of surface roughness due to seizure, peeling due to thermal shock, and erosion due to molten steel in order to secure a molten steel seal and achieve long-time casting. It is in.
【０００７】[0007]
【課題を解決するための手段】本発明の要旨は、サイド
堰と接するドラム端面部分が、内側の端面部分が硬質で
焼き付き難い材質、外側の端面部分が耐溶鋼性に優れる
材質からなることを特徴とするツインドラム式の金属薄
板の連続鋳造設備のドラムである。SUMMARY OF THE INVENTION The gist of the present invention is that
The drum end face in contact with the weir has a hard inner end face
Hard-to-seize material, excellent resistance to molten steel on the outer end face
A twin-drum metal sheet made of material
This is a drum of a continuous casting facility for plates .
【０００８】[0008]
【０００９】[0009]
【００１０】[0010]
【作用】本発明は、内側（軸側）は硬質で焼き付き難い
材質、外側（胴面）は耐溶鋼性に優れる材質をドラム端
面に張り分けることによって、端面の補修、手入れの頻
度を著しく減少し、ツインドラム法による直接薄板製造
の効率の向上およびドラム修繕費の低減を可能とする。According to the present invention, the inner (axial side) is made of a hard and hard-to-seize material, and the outer (body surface) is made of a material having excellent resistance to molten steel. In addition, it is possible to improve the efficiency of direct thin plate production by the twin drum method and to reduce drum repair costs.
【００１１】内側材質に要求される特性としては、硬質
で焼き付き難いことに加え、周期的に加熱されたサイド
堰と接触後、雰囲気に晒されるため、耐熱衝撃性が不可
欠である。このような特性を具備する材質としては、一
般に非酸化物系、非酸化物含有率の高いサーメット系が
知られている。The properties required for the inner material are that it is hard and hard to seize, and that it is exposed to the atmosphere after being in contact with the periodically heated side dam, so that thermal shock resistance is indispensable. As a material having such characteristics, a non-oxide type and a cermet type having a high non-oxide content are generally known.
【００１２】一方、外側材質に要求される特性として
は、溶鋼に対する耐食性に加え、同様に耐熱衝撃性が不
可欠である。このような特性を具備する材質としては、
表層に酸化皮膜を形成する金属系、酸化物含有率がさほ
ど高くないサーメット系が知られている。On the other hand, as the characteristics required for the outer material, in addition to corrosion resistance to molten steel, thermal shock resistance is also essential. Materials having such characteristics include:
A metal type forming an oxide film on the surface layer and a cermet type having a not so high oxide content are known.
【００１３】これら異種材質からなるドラム端面におい
ては、加熱したサイド堰と接触した際、熱膨張率に差が
あると境界で縁切れが生じ、いずれ剥離に至ることか
ら、これを防止するために材質の組み合わせを決定す
る。[0013] When the end face of the drum made of these dissimilar materials comes into contact with the heated side dam, if there is a difference in the coefficient of thermal expansion, the edge will be cut off at the boundary and eventually peeling will occur. Determine the combination of materials.
【００１４】[0014]
【実施例】図面は本発明の実施例を示すもので、図１は
水冷ドラムの構成図、図２はドラム端面の詳細図であ
る。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of the present invention. FIG. 1 is a structural view of a water-cooled drum, and FIG. 2 is a detailed view of an end face of the drum.
【００１５】図１に示すように、ドラム端面部分１に耐
火物を埋設したサイド堰３を押し付けることによって溶
鋼４をシールする。As shown in FIG. 1, a molten steel 4 is sealed by pressing a side weir 3 in which a refractory is buried against a drum end face portion 1.
【００１６】図２に示すように、ドラム端面部分はＮｉ
メッキ５、内側の端面部分６、外側の端面部分７から構
成される。内側の端面部分６は硬質で焼き付き難く、耐
熱衝撃性の高いＣｒ3 Ｃ2 （７０％）−Ｎｉ・Ｃｒを爆
発溶射、またはプラズマ溶射で施工して得られるもので
ある。外側の端面部分７は、表層に酸化皮膜を形成する
ことによって溶鋼に対する耐食性に優れ、耐熱衝撃性も
高いＣｏＣｒＡｌＹを爆発溶射、またはプラズマ溶射で
施工して得られるものである。As shown in FIG. 2, the end face of the drum is made of Ni.
It comprises a plating 5, an inner end face portion 6, and an outer end face portion 7. The inner end face portion 6 is obtained by explosive spraying or plasma spraying Cr 3 C 2 (70%)-Ni.Cr, which is hard and hard to seize and has high thermal shock resistance. The outer end face portion 7 is obtained by applying CoCrAlY, which has excellent corrosion resistance to molten steel by forming an oxide film on the surface layer and has high thermal shock resistance, by explosive spraying or plasma spraying.
【００１７】前記２種類の材質を端面部分の内側と外側
に施工した水冷ドラムを用いて、鋳造の前段階でドラム
端面に加熱したサイド堰を押し当てた後、ドラムを回転
させて鋳造を開始した。その結果、鋳バリ、湯洩れは発
生せず、安定した鋳造を行うことができた。従来に比
べ、著しくサイド堰の押し付け力の低減化も図られ、サ
イド堰の耐火物の摩耗速度は、端面にＣｒ3 Ｃ2 （７０
％）−Ｎｉ・Ｃｒの１材質を施工した場合に比べ１／
４、ＣｏＣｒＡｌＹ材質を施工した場合に比べ１／６に
小さくなり、１回の鋳造時間を延長し、鋳造量を大幅に
上昇させることができた。また、ドラム端面の補修、手
入れなどのドラムの修繕頻度を従来に比べ大幅に減少さ
せることができた。Using a water-cooled drum constructed of the two materials on the inside and outside of the end face, a heated side weir is pressed against the end face of the drum at a stage before casting, and then the casting is started by rotating the drum. did. As a result, casting burrs and molten metal leak did not occur, and stable casting could be performed. The pressing force of the side weir is remarkably reduced as compared with the conventional one, and the wear rate of the refractory of the side weir is reduced by a Cr 3 C 2 (70
%)-1 / compared to the case where one material of Ni / Cr is applied
4. As compared with the case where the CoCrAlY material was applied, the size was reduced to 1/6, and the time for one casting was extended, so that the casting amount could be increased significantly. In addition, the frequency of repairing the drum, such as repair and maintenance of the drum end face, was significantly reduced as compared with the conventional case.
【００１８】尚、本発明は実施例に記載した材質の組み
合わせ、及び施工構造のみに限定されるものではない。The present invention is not limited only to the combinations of materials and the constructions described in the embodiments.
【００１９】[0019]
【発明の効果】本発明により、ドラム端面円周の凹凸が
著しく小さくなるので、安定した長時間鋳造が可能にな
るとともに、ドラムの修繕費の大幅な削減も可能とな
る。According to the present invention, the irregularities on the circumference of the drum end surface are significantly reduced, so that stable long-time casting can be performed and the repair cost of the drum can be greatly reduced.
【図１】水冷ドラムの構成図である。FIG. 1 is a configuration diagram of a water-cooled drum.
【図２】ドラム端面の詳細図である。FIG. 2 is a detailed view of a drum end surface.
１ ドラム端面部分 ２ 水冷ドラム本体 ３ サイド堰 ４ 溶鋼 ５ Ｎｉメッキ ６ 内側の端面部分 ７ 外側の端面部分 DESCRIPTION OF SYMBOLS 1 Drum end part 2 Water-cooled drum main body 3 Side weir 4 Molten steel 5 Ni plating 6 Inner end part 7 Outer end part
───────────────────────────────────────────────────── フロントページの続き (72)発明者 岡 秀毅 山口県光市大字島田3434 新日本製鐵株 式会社 光製鐵所内 (72)発明者 新井 貴士 山口県光市大字島田3434 新日本製鐵株 式会社 光製鐵所内 (56)参考文献 特開 平３−118945（ＪＰ，Ａ) 特開 平１−273652（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) B22D 11/06 330 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hideki Oka 3434 Shimada, Hikari-shi, Yamaguchi Prefecture Inside Nippon Steel Corporation Hikari Works (72) Inventor Takashi Arai 3434 Shimada, Hikari-shi, Yamaguchi Prefecture Nippon Steel Corporation Hikari Works, Ltd. (56) References JP-A-3-118945 (JP, A) JP-A-1-273652 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) B22D 11/06 330
Claims (1)
側の端面部分が硬質で焼き付き難い材質、外側の端面部
分が耐溶鋼性に優れる材質からなることを特徴とするツ
インドラム式の金属薄板の連続鋳造設備のドラム。 1. A drum end face portion in contact with the side weirs, inner
Material whose end face is hard and hard to seize, outer end face
The drum of a twin-drum continuous casting machine for thin metal sheets, characterized in that the part is made of a material having excellent resistance to molten steel .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4242539A JP3015986B2 (en) | 1992-08-20 | 1992-08-20 | Drum of continuous casting equipment for sheet metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4242539A JP3015986B2 (en) | 1992-08-20 | 1992-08-20 | Drum of continuous casting equipment for sheet metal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06126390A JPH06126390A (en) | 1994-05-10 |
| JP3015986B2 true JP3015986B2 (en) | 2000-03-06 |
Family
ID=17090619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4242539A Expired - Lifetime JP3015986B2 (en) | 1992-08-20 | 1992-08-20 | Drum of continuous casting equipment for sheet metal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3015986B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100944438B1 (en) * | 2007-12-21 | 2010-02-25 | 주식회사 포스코 | Casting roll of twin roll sheet casting machine and its surface treatment method |
| KR101010631B1 (en) * | 2008-07-10 | 2011-01-24 | 주식회사 포스코 | Casting roll of twin roll sheet casting machine and manufacturing method |
-
1992
- 1992-08-20 JP JP4242539A patent/JP3015986B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06126390A (en) | 1994-05-10 |
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| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19991124 |