JPH01127148A - Drum type continuous casting apparatus - Google Patents
Drum type continuous casting apparatusInfo
- Publication number
- JPH01127148A JPH01127148A JP28416487A JP28416487A JPH01127148A JP H01127148 A JPH01127148 A JP H01127148A JP 28416487 A JP28416487 A JP 28416487A JP 28416487 A JP28416487 A JP 28416487A JP H01127148 A JPH01127148 A JP H01127148A
- Authority
- JP
- Japan
- Prior art keywords
- drum
- drums
- sheet
- plate
- molten metal
- 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.)
- Granted
Links
- 238000009749 continuous casting Methods 0.000 title claims description 13
- 229910052751 metal Inorganic materials 0.000 claims abstract description 20
- 239000002184 metal Substances 0.000 claims abstract description 20
- 238000005266 casting Methods 0.000 claims abstract description 10
- 238000007711 solidification Methods 0.000 description 10
- 230000008023 solidification Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 9
- 230000008602 contraction Effects 0.000 description 4
- 150000002739 metals Chemical class 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 238000003892 spreading Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- -1 steel Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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)
Abstract
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
な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 involves casting a molten metal in the gap between the surfaces of two drums that have parallel rotation axes and rotate in opposite directions while maintaining a gap. The present invention relates to an improvement of a so-called drum-type continuous casting device, which is a device for manufacturing plates in a complex manner.
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１０ｍ程度以下の板の連続鋳造装
置には一般にト９ラム式が用いられている。Continuous casting machines for thin metal plates can be broadly classified into belt type and drum type, and the drum type is generally used for continuous casting machines for plates with a thickness of about 10 m 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１１！Ｌ、１１）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ｌａ、ｌ
ｂ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 explained with reference to FIG. Two drums 11 arranged horizontally and having mutually parallel rotation axes! L and 11) rotate in opposite directions as indicated by the arrows, and continuously pour the molten metal 2 into the gap between both drums. 3 is a pool of molten metal, and the molten metal is placed in drums la and l.
Solidification begins at the portion in contact with the surface of b, and as the drum rotates, it moves downward as shown by the arrow, producing the thin plate 4.
前記ドラム１！Ｌ、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ｌａ、ｌｂの内面は冷却されている。Said drum 1! Weirs are abutted on the end surfaces of L and 1b to prevent the molten metal from leaking from the pool 3, and the inner surfaces of the drums la and lb 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＋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。As mentioned above, the drum-type continuous casting apparatus is suitable for manufacturing thin plates, and is used for metals ranging from low melting point metals to high melting point metals such as aluminum, aluminum, copper and their respective alloys, and steel.
しかし、鋼のような高融点金属については技術的に揮々
問題があって、現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 many technical problems with high-melting point metals such as steel, and while there are examples of practical use with copper and its alloys, full-scale practical use has not yet been achieved with steel.
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 biggest problem of this type is the occurrence of cracks on the plate surface during casting and solidification. Unless the frequency of crack occurrence is reduced to almost zero, rolled products using continuously cast plates as original plates cannot be produced.
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 aims 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
湯な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【、前記ドラムの表面に複数の円周方向に連続する
小＠を設けた。The present invention relates to a drum-type continuous casting machine that manufactures thin plates by pouring molten metal into the gap between the surfaces of two drums that have parallel rotating shafts and rotate in opposite directions while maintaining a gap. [, A plurality of small @s continuous in the circumferential direction were provided on the surface 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 drum-type continuous casting equipment, cracks occur because 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. The tensile stress in the direction acts on the weak portion where solidification is progressing with a delay, causing a longitudinal crack to occur 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
連続する小溝を設けたことによって、次の作用を奏する
ことができる。As described above, the present invention provides the following effects by providing a plurality of small grooves continuous in the circumferential direction on the surface of the drum.
（１） ドラム表面の小溝によって製造される板はそ
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 produced by the small grooves on the drum surface has a corrugated surface. For this reason, the shrinkage stress acts only on a small area and is effective in preventing cracks.
（２）板がドラムに接している間は、板表面は波形とな
シボ溝をもつドラム表面に接しているために１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 in contact with the drum surface, which has corrugated grooves, so the shrinkage of one plate is caused by the ridges of waves formed by the small grooves on the drum surface. This prevents the effects of shrinkage from spreading over a wide range, and thus the stress is distributed over a small area 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
収縮による引張シ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, if a crack is likely to occur due to tensile stress due to contraction of the solidified portion, the stress is alleviated by the bellows effect due to the corrugated shape, preventing the occurrence of cracks. Ru.
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ｌａ、ｌｂを備えており、その両ドラムの間
隙に溶湯が連続的罠注湯される。５ａ、５ｂは両ドラム
ｌａ、１１１の両端面に接する堰で溶湯の洩れを防止し
、ドラムｌａ。An embodiment of the present invention will be described with reference to FIGS. 1 to 3. In this embodiment, as in the conventional device shown in FIG.
It is equipped with two drums la and lb, and molten metal is continuously poured into the gap between the two drums. 5a and 5b are weirs in contact with both end surfaces of both drums la and 111 to prevent leakage of the molten metal.
１１）はこれに接して回転する。ドラムｌａ、ｌｂの表
面へ１ａＳＦ、１ｂＳＦＫはそれぞれ円周方向に連続し
た複数の波形の小溝Ａ、Ｂ、Ｇ、 ・・・；Ａ／ 、
Ｂ／ 、 Ｑ／・・・が設けられている。４は両ドラ
ム表面１ａＳＦ、１ｂＳＦ間の間隙を通う【形成される
薄板である。11) rotates in contact with this. 1aSF and 1bSFK are formed on the surfaces of drums la and lb, respectively, with a plurality of small wave-shaped grooves A, B, G, ...;A/, which are continuous in the circumferential direction.
B/, Q/... are provided. 4 is a thin plate that passes through the gap between both 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ｌ）％４ないし４倍の範囲、即ちＰ
−（’Ａ〜４）ｔとされている。また、波の高さｈは０
．１〜０．２５朋の範囲とする。なお板厚ｔは通常１〜
１０ｍｍの範囲である。FIG. 2 shows an enlarged part of the drum surface shown in FIG. 1, and the pitch P of the waves formed by the small grooves A, B, C, . . . times the range, i.e. P
-('A~4)t. Also, the height h of the wave is 0
．． The range is 1 to 0.25. The plate thickness t is usually 1~
The range is 10mm.
また複数の小溝Ａ、 Ｂ、 Ｇ、 ・・・； Ａ’
、Ｂ／。There are also multiple small grooves A, B, G, ...; A'
,B/.
Ｃ′・・・Ｋよってそれぞれ形成されるドラムｌ ａｓ
Ｆの波と１ｂＳＦの波との位相差は、００〜１８０°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
一定になるようにするのが最良である。A drum l as formed by C'...K, respectively.
The phase difference between the F wave and the 1bSF wave is appropriately set in the range of 00 to 180°, but as shown in Fig. 2, if one is convex, the other is concave, and it is difficult to determine which part of the plate 4 However, it is best to keep the thickness constant.
本実施例は以上のよ５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、１）の間隙を通っ
て表面が波形の板が形成される。Since this embodiment is constructed as described above, a plate having a corrugated surface is formed through the gap between the drums 1a and 1), as shown in FIGS. 1 and 3.
鋳造中の板４は、＠３図に示すように、両ドラムの表面
１ａＳＥｌ“、１ｔ）ＳＦ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。As shown in Figure @3, the plate 4 being cast is cooled by the surfaces 1aSEl", 1t) SF of both drums, and solidified portions 4-1, 4-2 are formed from both sides, and unsolidified portions are formed in the center. There is a hot spring part 4-3.
前記のように、鋳造時ドラムｌａ、ｌｂの表面における
ｆ＃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 mentioned above, during casting, the solidification of the f# hot water on the surfaces of the drums la and lb does not necessarily proceed uniformly in the axial direction of the drums, and therefore the solidification portions 4-1.
The thickness distribution of 4-2 is not uniform in the axial direction of the drum. For this reason, the portion where solidification has progressed first experiences a large contraction, which generates 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
波形となりているために、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Ａｌａ、ｌｂの表面
１ａＳＦ、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。However, since the plate manufactured by the apparatus of this embodiment has a corrugated surface, the tensile stress only acts on a small area. Also, while the plate 4 is in contact with the surfaces 1aSF and 1bSF of the drums Ala and lb, the contraction of the plate 4 occurs through the small grooves A and B on the drum surface.
Ｃ１・・・；Ａ′、Ｂ′、Ｃ′・・・で形成される波の
山の部分によりて拘束され、収縮による影響が広範囲に
波及することが防止される。C1...; A', B', C'... are restrained by the crests of the waves, and the effects of contraction are prevented from spreading over a wide range.
更に１板４は表面が波形の形状を有しているために５蛇
腹効果によりて収縮により引張り応力を緩和することが
できろ。このように本冥捲例では、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 surface of the plate 4 has a corrugated shape, the tensile stress can be alleviated by shrinkage due to the bellows effect. In this way, in this case, the effects of solidification and shrinkage of the plate do not spread over a wide range, and the resulting tensile stress can be reduced, making it possible to prevent the occurrence of cracks in the plate. .
本実施例に係る装置を用いた実験例を次に説明する。An experimental example using the apparatus according to this embodiment will be described next.
直径６００＋＋＋＋ａ、巾６００ｎのドラム表面にピッ
チ［Ｆ］−３鶴、波高（ｈ） −０，８１１の複数の円
周方向く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（ト９ラム周速
）、板の厚さ２．６ｎの条件で１８％０ｒ９４Ｎｉ不銹
鋼９００Ｋｆの板を鋳造した。A plurality of circumferentially continuous small grooves with a pitch [F] of -3 cranes and a wave height (h) of -0,811 were provided on the surface of the drum having a diameter of 600++++a and a width of 600n. Using this drum, a plate of 900 Kf of 18% 0r94Ni stainless steel was cast at a casting temperature of 1510° C., a casting speed of 63 m/min (peripheral speed of the drum 9), and a plate thickness of 2.6 nm.
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 cracks were observed in the plate, confirming the effectiveness of the present invention.
本発明は以上説明したように、ドラム弐連続鋳造装置に
おいて、ドラム表面に円周方向に連続した複数の小溝を
設け、波形の表面をもつ板を鋳造することによって、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。As explained above, the present invention uses a two-drum continuous casting device, by providing a plurality of continuous small grooves in the circumferential direction on the drum surface and casting a plate with a corrugated surface, thereby reducing the shrinkage caused by solidification of the molten metal. By preventing the effects from spreading over a wide area and by alleviating the tensile stress caused by shrinkage, it is possible to prevent cracks from occurring in the cast plate.
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図は従来のト９ラム式連続鋳造装置の原理を示す説
明図である。
ｌａ、ｌｂ・・・ドラム。
１ ａｓＦ、１ ｂＳＦ・・・ドラム表面。
２・・・溶湯、 ３・・・溶湯プール。
４・・・板、 ５ａ、５ｂ・・・堰。
Ａ、 Ｂ、 Ｑ、 Ａ’、 Ｂ’、 Ｏ’・・・小溝代
理人 弁理士 坂 間 暁 外２名第１図
第２図FIG. 1 is an explanatory diagram of an embodiment of the present invention; FIG. 2 is an explanatory diagram of the drum surface of the embodiment; FIG. 3 is a sectional view showing the solidification state of a plate solidified by the drum surface of the embodiment; FIG. 4 is an explanatory diagram showing the principle of a conventional nine-tram type continuous casting apparatus. la, lb...drum. 1 asF, 1 bSF...Drum surface. 2... Molten metal, 3... Molten metal pool. 4... Board, 5a, 5b... Weir. A, B, Q, A', B', O'... Agent Komizo Patent attorney Akira Sakama and two others Figure 1 Figure 2
Claims (1)
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、前記ドラムの表
面に複数の円周方向に連続する小溝を設けたことを特徴
とするドラム式連続鋳造装置。In a continuous casting machine that manufactures a plate by casting molten metal into the gap between the surfaces of two drums that have parallel rotating shafts and rotate in opposite directions while maintaining a gap, a plurality of drums are formed on the surface of the drum. A drum-type continuous casting device characterized by having small grooves continuous in the circumferential direction.
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 true JPH01127148A (en) | 1989-05-19 |
| JP2544411B2 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 (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 |
| EP1243362A2 (en) * | 2001-03-22 | 2002-09-25 | Georg Dr. Bollig | Process and device for manufacturing hot strip in a twin roll continuous casting machine |
| JP2006231347A (en) * | 2005-02-23 | 2006-09-07 | Mitsubishi-Hitachi Metals Machinery Inc | Twin roll type continuous caster |
| CN101961707A (en) * | 2009-07-23 | 2011-02-02 | 四国化研(上海)有限公司 | Forming method of pattern surface |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102553810B (en) * | 2010-12-23 | 2015-01-21 | 四国化研(上海)有限公司 | Method for forming pattern surfaces |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62254953A (en) * | 1986-04-30 | 1987-11-06 | Hitachi Ltd | Twin roll type continuous caster |
-
1987
- 1987-11-12 JP JP62284164A patent/JP2544411B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62254953A (en) * | 1986-04-30 | 1987-11-06 | Hitachi Ltd | Twin roll type continuous caster |
Cited By (6)
| 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 |
| EP1243362A2 (en) * | 2001-03-22 | 2002-09-25 | Georg Dr. Bollig | Process and device for manufacturing hot strip in a twin roll continuous casting machine |
| EP1243362A3 (en) * | 2001-03-22 | 2003-11-26 | Georg Dr. Bollig | Process and device for manufacturing hot strip in a twin roll continuous casting machine |
| JP2006231347A (en) * | 2005-02-23 | 2006-09-07 | Mitsubishi-Hitachi Metals Machinery Inc | Twin roll type continuous caster |
| CN101961707A (en) * | 2009-07-23 | 2011-02-02 | 四国化研(上海)有限公司 | Forming method of pattern surface |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2544411B2 (en) | 1996-10-16 |
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