JP2544411B2 - Drum type continuous casting equipment - Google Patents
Drum type continuous casting equipmentInfo
- Publication number
- JP2544411B2 JP2544411B2 JP62284164A JP28416487A JP2544411B2 JP 2544411 B2 JP2544411 B2 JP 2544411B2 JP 62284164 A JP62284164 A JP 62284164A JP 28416487 A JP28416487 A JP 28416487A JP 2544411 B2 JP2544411 B2 JP 2544411B2
- Authority
- JP
- Japan
- Prior art keywords
- drum
- plate
- continuous casting
- drums
- type continuous
- 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
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
- B22D11/0651—Casting wheels
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は平行な回転軸を有し間隙を保持して互いに逆
方向に回転する２個のドラムの表面間の間隙に金属の溶
湯を鋳込んで板を製造する装置、いわゆるドラム式の連
続鋳造装置の改良に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention casts molten metal into the gap between the surfaces of two drums having parallel axes of rotation and holding the gap and rotating in opposite directions. The present invention relates to an improvement of an apparatus for manufacturing a plate by incorporating it, a so-called drum type continuous casting apparatus.
〔従来の技術〕 金属の薄板の連続鋳造装置には、大別してベルト式と
ドラム式があるが、厚さ10mm程度以下の板の連続鋳造装
置には一般にドラム式が用いられている。[Prior Art] The continuous casting apparatus for a thin metal plate is roughly classified into a belt type and a drum type, but a drum type is generally used for a continuous casting apparatus for a plate having a thickness of about 10 mm or less.
第４図により、従来のドラム式の連続鋳造装置を説明
する。水平に配設され互に平行な回転軸を有する２個の
ドラム1a,1bは、それぞれ矢印の方向に逆方向に回転
し、両ドラム間の間隙に溶湯２を連続的に注湯する。３
は溶湯のプールであって、溶湯はドラム1a,1bの表面に
接した部分で凝固を開始し、ドラムの回転につれて矢印
に示すように下方に移動して薄板４が製造される。A conventional drum type continuous casting apparatus will be described with reference to FIG. Two drums 1a and 1b which are horizontally arranged and have mutually parallel rotation axes rotate in opposite directions in the directions of the arrows, and continuously pours the molten metal 2 into the gap between the two drums. Three
Is a pool of molten metal, and the molten metal starts solidifying at the portions in contact with the surfaces of the drums 1a and 1b, and moves downward as the drum rotates to manufacture the thin plate 4.
前記ドラム1a,1bの端面部分には、プール３の溶湯が
洩れないように堰が当接されており、また、一般にドラ
ム1a,1bの内面は冷却されている。A weir is in contact with the end surfaces of the drums 1a and 1b so that the molten metal of the pool 3 does not leak, and the inner surfaces of the drums 1a and 1b are generally cooled.
前記のドラム式連続鋳造装置は、上に述べたように薄
板の製造に適していて、低融点金属からアルミニウム、
銅とそれぞれの合金及び鋼等の高融点金属まで用いられ
ている。The drum-type continuous casting apparatus is suitable for producing thin plates as described above, and includes low melting point metal to aluminum,
High melting point metals such as copper and their alloys and steel are used.
しかし、鋼のような高融点金属については技術的に種
々問題があって、形状では銅とその合金で実用化された
例はあるが、鋼については本格的な実用化には至ってい
ない。However, there are various technical problems with refractory metals such as steel, and although there are examples in which copper and its alloys have been put into practical use in terms of shape, steel has not yet been fully put into practical use.
この種の問題のうち最大のものは、鋳造凝固時に板面
に亀裂が発生することである。この亀裂発生の頻度が殆
どゼロにならないと、連続鋳造による板を原板とする圧
延製品は成立たない。The largest of these types of problems is the cracking of the plate surface during solidification by casting. If the frequency of occurrence of this crack is almost zero, a rolled product using a plate obtained by continuous casting as a base plate cannot be established.
本発明は、ドラム式連続鋳造装置において、この板の
亀裂の発生を防止しようとするものである。The present invention is intended to prevent the occurrence of cracks in the plate in a drum type continuous casting apparatus.
本発明は、平行な回転軸を有し間隙を保持して互いに
逆方向に回転する２個のドラムの表面間の間隙に金属の
溶湯を鋳込んで薄板を製造するドラム式の連続鋳造装置
において、前記ドラムの表面に複数の円周方向に連続す
る小溝を設けた。その小溝は対向するドラム表面の凹部
と凸部が対応し、かつ、同ドラムの軸方向に波形をなし
て伸びている。The present invention relates to a drum-type continuous casting apparatus for producing a thin plate by casting a molten metal into a gap between surfaces of two drums having parallel axes of rotation and holding a gap and rotating in opposite directions. A plurality of circumferentially continuous small grooves are provided on the surface of the drum. The small groove corresponds to a concave portion and a convex portion on the opposite drum surface, and extends in a wavy form in the axial direction of the drum.
ドラム式の連続鋳造装置において、亀裂が発生する原
因は、ドラム表面における溶湯の凝固がドラムの軸方向
において同時に均一に進行することがないために、先に
凝固が進行した部分の収縮による板横方向の引張り応力
が、遅れて凝固が進行している脆弱な部分に作用して、
その部分に縦方向の亀裂を発生させることにある。In a drum-type continuous casting machine, the cause of cracks is that the solidification of the molten metal on the drum surface does not proceed uniformly in the axial direction of the drum at the same time. Direction tensile stress acts on the fragile part where solidification progresses late,
A vertical crack is generated in that portion.
本発明は、前記の通りドラムの表面に複数の円周方向
に連続し、対向するドラム表面の凹部と凸部が対応し、
かつ、ドラムの軸方向に波形をなして伸びている小溝を
設けたことによって次の効果を奏することができる。The present invention, as described above, is continuous in a plurality of circumferential directions on the surface of the drum, and the concave portion and the convex portion of the opposing drum surface correspond to each other,
Moreover, the following effects can be obtained by providing the small groove that extends in a wavy form in the axial direction of the drum.
（１）ドラム表面の小溝によって製造される板は肉厚が
一定でその表面が波形の形状となる。このために前記の
収縮応力は小範囲に作用するに止まり、亀裂防止に有効
である。(1) The plate manufactured by the small grooves on the surface of the drum has a constant thickness and the surface has a corrugated shape. For this reason, the above-mentioned shrinkage stress only acts in a small range and is effective in preventing cracks.
また、鋳造される鋳片は前記したように微小な波打ち
状を呈しているが肉厚は一定であり、これを圧延しても
表面傷を発生することがない。Further, the cast slab to be cast has a fine wavy shape as described above, but the thickness is constant, and even if it is rolled, surface scratches do not occur.
（２） 板がドラムに接している間は、板表面は波形と
なり小溝をもつドラム表面に接しているために、板の収
縮は、ドラム表面の小溝で形成される波の山の部分によ
って拘束され、収縮による影響が広範囲に及ぶことが阻
止され、このために応力は小範囲に分散してその値が小
さくなる。(2) While the plate is in contact with the drum, the plate surface is corrugated and is in contact with the drum surface having small grooves, so the contraction of the plate is restricted by the wave crests formed by the small grooves on the drum surface. As a result, the influence of the contraction is prevented from spreading over a wide range, so that the stress is dispersed in a small range and its value becomes small.
（３） 板の形状は波形となっているために、凝固部分
の収縮による引張り応力によって亀裂が発生しようとす
る場合、波形の形状による蛇腹効果によって応力が緩和
され、亀裂の発生が防止される。(3) Since the shape of the plate is corrugated, when a tensile stress due to contraction of the solidified portion causes a crack to occur, the stress is relieved by the bellows effect due to the corrugated shape and the occurrence of cracks is prevented. .
〔実施例〕 本発明の一実施例を第１図ないし第３図によって説明
する。本実施例では、第４図に示す従来の装置と同様に
２個のドラム1a,1bを備えており、その両ドラムの間隙
に溶湯が連続的に注湯される。5a,5bは両ドラム1a,1bの
両端面に接する堰で溶湯の洩れを防止し、ドラム1a,1b
はこれに接して回転する。ドラム1a,1bの表面1aSF,1bSF
にそれぞれ円周方向に連続した複数の波形の小溝A,B,C,
・・・;A′,B′,C′・・・が設けられている。４は両ド
ラム表面1aSF,1bSF間の間隙を通って形成される薄板で
ある。[Embodiment] An embodiment of the present invention will be described with reference to FIGS. In this embodiment, two drums 1a and 1b are provided as in the conventional apparatus shown in FIG. 4, and the molten metal is continuously poured into the gap between both drums. 5a and 5b are weirs contacting both end surfaces of both drums 1a and 1b to prevent molten metal from leaking, and drums 1a and 1b
Rotates in contact with this. Surface of drum 1a, 1b 1aSF, 1bSF
On each of a plurality of corrugated small grooves A, B, C, which are continuous in the circumferential direction.
...; A ', B', C '... are provided. Reference numeral 4 is a thin plate formed through the gap between the drum surfaces 1aSF and 1bSF.
第２図は第１図に示すドラム表面の一部を拡大して示
し、小溝A,B,C,・・・で形成される波のピッチＰは板４
の厚さｔの1/2ないし４倍の範囲、即ちＰ＝（1/2〜４）
ｔとされている。また、波の高さｈは0.1〜0.25mmの範
囲とする。なお板厚ｔは通常１〜10mmの範囲である。2 is an enlarged view of a part of the drum surface shown in FIG. 1, and the pitch P of the waves formed by the small grooves A, B, C, ...
The thickness t of 1/2 to 4 times, that is, P = (1/2 to 4)
It is assumed to be t. The height h of the wave is in the range of 0.1 to 0.25 mm. The plate thickness t is usually in the range of 1 to 10 mm.
また複数の小溝A,B,C,・・・;A′,B′,C′・・・によ
ってそれぞれ形成されるドラム1aSFの波と1bSFの波との
位相差は、０゜〜180゜の範囲で適当に設定するが、第
２図に示すように、一方が凸の場合は他方が凹となり、
板４のどの部分でも厚さが一定となるようにするのが最
良である。Further, the phase difference between the wave of the drum 1aSF and the wave of 1bSF formed by the plurality of small grooves A, B, C, ...; A ′, B ′, C ′, ... Is 0 ° to 180 °. Although it is set appropriately within the range, as shown in FIG. 2, when one is convex, the other is concave,
It is best to have a constant thickness on any part of the plate 4.
本実施例は以上のように構成されているので、第１図
及び第３図に示すように、ドラム1a,1bの間隙を通って
表面が波形の板が形成される。鋳造中の板４は、第３図
に示すように、両ドラムの表面1aSF,1bSFによって冷却
されて両面から凝固部分４−1,4−２が形成され、中央
部には未凝固の湯の部分４−３が存在する。Since this embodiment is configured as described above, as shown in FIGS. 1 and 3, a corrugated plate is formed through the gap between the drums 1a and 1b. As shown in FIG. 3, the plate 4 during casting is cooled by the surfaces 1aSF and 1bSF of both drums to form solidified portions 4-1 and 4-2 from both surfaces, and the unsolidified molten metal is formed in the central portion. Part 4-3 is present.
前記のように、鋳造時ドラム1a,1bの表面における溶
湯の凝固がドラムの軸方向において必ずしも同時に均一
に進行することがなく、従って、凝固部分４−1,4−２
の厚さの分布はドラムの軸方向において均一ではない。
このため先に凝固が進行した部分の収縮が大きく、これ
によって板の横方向に引張り応力が生ずる。As described above, during casting, the solidification of the molten metal on the surfaces of the drums 1a and 1b does not always proceed uniformly in the axial direction of the drum, and therefore the solidified portions 4-1 and 4-2
Thickness distribution is not uniform in the axial direction of the drum.
For this reason, the shrinkage of the portion where the solidification has proceeded first is large, which causes tensile stress in the lateral direction of the plate.
しかし、本実施例の装置によって製造される板は表面
が波形となっているために、前記引張り応力は小範囲に
作用するに止まる。また、板４がドラム1a,1bの表面1aS
F,1bSFに接している間は、板４の収縮はドラム表面の小
溝A,B,C,・・・;A′,B′,C′・・・で形成される波の山
の部分によって拘束され、収縮による影響が広範囲に波
及することが防止される。However, since the plate manufactured by the apparatus of the present embodiment has a corrugated surface, the tensile stress only acts in a small range. Further, the plate 4 is the surface 1aS of the drums 1a, 1b.
While in contact with F, 1bSF, the contraction of the plate 4 is caused by the wave peaks formed by the small grooves A, B, C, ...; A ', B', C '... on the drum surface. It is restrained and the effect of contraction is prevented from spreading widely.
更に、板４は表面が波形の形状を有しているために、
蛇腹効果によって収縮により引張り応力を緩和すること
ができる。このように本実施例では、板の凝固・収縮に
よる影響が広範囲に及ぶことがなく、かつ、これによる
引張り応力の値を小さくすることができるので、板の亀
裂の発生を防ぐことができる。Furthermore, since the plate 4 has a corrugated surface,
Due to the bellows effect, the contraction can relax the tensile stress. As described above, in the present embodiment, the influence of the solidification / shrinkage of the plate does not extend over a wide range, and the value of the tensile stress due to this can be made small, so that the occurrence of the plate crack can be prevented.
本実施例に係る装置を用いた実施例を次に説明する。 An example using the apparatus according to this example will be described below.
直径600mm、巾600mmのドラム表面にピッチ（Ｐ）＝3m
m,波高（ｈ）＝0.8mmの複数の円周方向に連続した小溝
を設けた。このドラムを用いて鋳込温度1510℃，鋳込速
度63m/分（ドラム周速），板の厚さ2.6mmの条件で18％C
r 9％Ni不銹鋼900Kgの板を鋳造した。Pitch (P) = 3 m on the surface of a drum with a diameter of 600 mm and a width of 600 mm
m, wave height (h) = 0.8 mm, and a plurality of continuous small grooves were provided in the circumferential direction. Using this drum, the casting temperature is 1510 ° C, the casting speed is 63m / min (drum peripheral speed), and the plate thickness is 2.6mm.
A plate of 900% 9% Ni stainless steel was cast.
この結果、板には縦割れの発生は認められず、本発明
の効果が確認された。As a result, no vertical cracking was observed in the plate, confirming the effect of the present invention.
本発明は以上説明したように、ドラム式連続鋳造装置
において、ドラム表面に円周方向に連続し、対向するド
ラム表面の凹部と凸部が対応し、かつ、ドラムの軸方向
に波形をなして伸びている複数の小溝を設け、波形の表
面をもつ板を鋳造することによて、溶湯の凝固に伴う収
縮の影響が広範囲に波及することを防ぎ、また収縮によ
る引張り応力を緩和することによって、鋳造される板に
亀裂が発生することを防止することができる。INDUSTRIAL APPLICABILITY As described above, the present invention, in the drum type continuous casting apparatus, is continuous in the circumferential direction on the drum surface, the concave portions and the convex portions on the opposing drum surface correspond to each other, and the waveform is formed in the axial direction of the drum. By providing a plurality of small grooves extending and casting a plate with a corrugated surface, it is possible to prevent the effect of shrinkage due to the solidification of the molten metal from spreading over a wide range, and to relax the tensile stress due to shrinkage. It is possible to prevent cracks from being generated in the cast plate.
また、本発明によるドラム式連続鋳造装置で鋳造され
る鋳片はその肉夏が一定であり、従って、本発明による
装置で鋳造された鋳片は圧延されても表面傷を発生する
ことがない。Further, the slab cast by the drum type continuous casting apparatus according to the present invention has a constant meat and summer, and therefore the slab cast by the apparatus according to the present invention does not cause surface scratches even when rolled. .
第１図は本発明の一実施例の説明図、 第２図は前記実施例のドラム表面の説明図、 第３図は前記実施例のドラム表面によって凝固する板の
凝固状態を示す断面図、 第４図は従来のドラム式連続鋳造装置の原理を示す説明
図である。 1a,1b……ドラム， 1aSF,1bSF……ドラム表面， ２……溶湯,3……溶湯プール， ４……板,5a,5b……堰， A,B,C,A′,B′,C′……小溝1 is an explanatory view of an embodiment of the present invention, FIG. 2 is an explanatory view of a drum surface of the above embodiment, FIG. 3 is a sectional view showing a solidified state of a plate solidified by the drum surface of the above embodiment, FIG. 4 is an explanatory view showing the principle of the conventional drum type continuous casting apparatus. 1a, 1b …… drum, 1aSF, 1bSF …… drum surface, 2 …… molten metal, 3 …… molten pool, 4 …… plate, 5a, 5b …… weir, A, B, C, A ′, B ′, C '... small groove
───────────────────────────────────────────────────── フロントページの続き (72)発明者 織田 貞四郎 東京都千代田区丸の内２丁目５番１号 三菱重工業株式会社内 (72)発明者 大森 舜二 広島県広島市西区観音新町４丁目６番22 号 三菱重工業株式会社広島研究所内 (72)発明者 山本 恵一 広島県広島市西区観音新町４丁目６番22 号 三菱重工業株式会社広島研究所内 (56)参考文献 特開 昭62−254953（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Sadashiro Oda 2-5-1, Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Heavy Industries, Ltd. (72) Shunji Omori 4-6, Kannon Shinmachi, Nishi-ku, Hiroshima-shi, Hiroshima No. 22 Mitsubishi Heavy Industries, Ltd. Hiroshima Research Institute (72) Inventor Keiichi Yamamoto 4-6-22 Kannon Shinmachi, Nishi-ku, Hiroshima City, Hiroshima Prefecture Mitsubishi Heavy Industries, Ltd. Hiroshima Research Institute (56) Reference JP 62-254953 (JP, A)
Claims (1)
逆方向に回転する２個のドラムの表面間の間隙に金属の
溶湯を鋳込んで板を製造する連続鋳造装置において、前
記ドラムはその表面に複数の円周方向に連続した小溝を
有し、その小溝は対向するドラム表面の凹部と凸部が対
応し、かつ、同ドラムの軸方向に波形をなして伸びてい
ることを特徴とするドラム式連続鋳造装置。1. A continuous casting apparatus for producing a plate by casting a molten metal into a gap between surfaces of two drums having parallel axes of rotation and holding a gap and rotating in opposite directions. The drum has a plurality of circumferentially continuous small grooves on its surface, the concave and convex portions of the opposing drum surface corresponding to the small grooves, and extending in a wavy form in the axial direction of the drum. Drum type continuous casting equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62284164A JP2544411B2 (en) | 1987-11-12 | 1987-11-12 | Drum type continuous casting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62284164A JP2544411B2 (en) | 1987-11-12 | 1987-11-12 | Drum type continuous casting equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01127148A JPH01127148A (en) | 1989-05-19 |
| JP2544411B2 true JP2544411B2 (en) | 1996-10-16 |
Family
ID=17675011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62284164A Expired - Lifetime JP2544411B2 (en) | 1987-11-12 | 1987-11-12 | Drum type continuous casting equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2544411B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102553810A (en) * | 2010-12-23 | 2012-07-11 | 四国化研(上海)有限公司 | Method for forming pattern surfaces |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02224853A (en) * | 1989-02-27 | 1990-09-06 | Kawasaki Steel Corp | Cooling roll for producing twin roll type rapidly cooling strip |
| US5477911A (en) * | 1994-03-24 | 1995-12-26 | Danieli United, Inc. | Twin roller caster |
| DE10114269C1 (en) * | 2001-03-22 | 2002-05-02 | Georg Bollig | Production of a hot strip comprises inserting liquid steel between two opposing rotating casting rollers in a two roller thin strip casting device, solidifying the strand skins to a defined thickness, and deforming to a final thickness |
| JP2006231347A (en) * | 2005-02-23 | 2006-09-07 | Mitsubishi-Hitachi Metals Machinery Inc | Twin roll type continuous caster |
| CN101961707B (en) * | 2009-07-23 | 2015-09-16 | 四国化研(上海)有限公司 | The formation method of pattern plane |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0815639B2 (en) * | 1986-04-30 | 1996-02-21 | 日新製鋼株式会社 | Twin roll type continuous casting machine |
-
1987
- 1987-11-12 JP JP62284164A patent/JP2544411B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102553810A (en) * | 2010-12-23 | 2012-07-11 | 四国化研(上海)有限公司 | Method for forming pattern surfaces |
| CN102553810B (en) * | 2010-12-23 | 2015-01-21 | 四国化研(上海)有限公司 | Method for forming pattern surfaces |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01127148A (en) | 1989-05-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2544411B2 (en) | Drum type continuous casting equipment | |
| KR950014486B1 (en) | Continuous cast thin piece and method of casting thereof | |
| JPS5577962A (en) | Continuous casting method of steel | |
| JPS6483343A (en) | Method for continuously casting cast thin slab | |
| JPS6483342A (en) | Cooling drum for continuous casting apparatus for cast thin slab | |
| JPH0829399B2 (en) | Continuous casting method for metal ribbon | |
| JPH0220645A (en) | Mold for continuously casting steel | |
| KR101195219B1 (en) | Method for making surface of casting roll of strip casting process | |
| CA1061079A (en) | Built-up continuous casting mould | |
| JPH02295664A (en) | Manufacture of aluminum alloy-made sliding member | |
| JPS5938866B2 (en) | Continuous casting mold | |
| JPH0562019B2 (en) | ||
| JP2574471B2 (en) | Cooling drum for continuous casting of thin cast slabs | |
| JPH03110044A (en) | Cooling drum for casting cast strip | |
| JPH03161148A (en) | Twin roll type continuous casting machine | |
| JPH01127152A (en) | Belt for twin belt caster | |
| JPH0659526B2 (en) | Thin plate continuous casting method | |
| JP2621978B2 (en) | Cooling drum for thin slab casting | |
| JPS63183750A (en) | Side weir for metal strip continuous casting apparatus | |
| JPH0327857A (en) | Metallic mold for centrifugal casting | |
| JPS61137652A (en) | Continuous casting device for thin sheet | |
| JP3055591B2 (en) | Cooling drum for twin-drum continuous casting equipment | |
| JPS58218357A (en) | Continuous casting device for thin plate | |
| SU528144A1 (en) | Method of lining metalform | |
| SU426746A1 (en) | METHOD FOR PROTECTING OXIDATION INGITS |