JPS635179B2 - - Google Patents
Info
- Publication number
- JPS635179B2 JPS635179B2 JP6906382A JP6906382A JPS635179B2 JP S635179 B2 JPS635179 B2 JP S635179B2 JP 6906382 A JP6906382 A JP 6906382A JP 6906382 A JP6906382 A JP 6906382A JP S635179 B2 JPS635179 B2 JP S635179B2
- Authority
- JP
- Japan
- Prior art keywords
- cooling water
- twin mold
- cooling
- rollers
- twin
- 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
Links
- 239000000498 cooling water Substances 0.000 claims description 25
- 238000001816 cooling Methods 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 7
- 238000005266 casting Methods 0.000 claims description 4
- 230000003111 delayed effect Effects 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009749 continuous casting Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 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
- B22D11/068—Accessories therefor for cooling the cast product during its passage through the mould surfaces
- B22D11/0682—Accessories therefor for cooling the cast product during its passage through the mould surfaces by cooling the casting wheel
Description
【発明の詳細な説明】
本発明はツインモールドローラ間から鋳片を引
き抜くようにした鋳片連続鋳造設備におけるシエ
ル形成法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for forming a shell in continuous slab casting equipment in which a slab is pulled out from between twin mold rollers.
従来知られているツインモールドローラを用い
た鋳片連続鋳造設備の概路を第１図に基づいて説
明する。１は互いに接近するツインモールドロー
ラ、２，３は両ローラ１の直下から下方へのびる
鋳片搬送経路を構成するピンチローラおよびガイ
ドローラ、４はタンデイツシユノズル、５，６は
ローラ１上に配設された一対の長辺堰と短辺堰で
ある。 A schematic diagram of a conventional continuous cast slab casting facility using twin mold rollers will be explained with reference to FIG. 1 are twin mold rollers approaching each other, 2 and 3 are pinch rollers and guide rollers that extend downward from directly below both rollers 1 and constitute a slab conveyance path, 4 is a tundish nozzle, and 5 and 6 are on roller 1. A pair of long side weir and short side weir were installed.
上記構成において、両ローラ１間にノズル４か
ら溶湯７を注入し、両ローラ１内に供給した冷却
水により溶湯７を冷却してシエル８を形成し、鋳
片９を矢印Ａ方向へ引き抜くわけであるが、この
とき溶湯７の冷却速度は両堰５，６とローラ１と
で形成される鋳型１０の四隅ほど早くなり、その
四隅の溶湯７が早く凝固してシエル８が形成され
る。したがつて鋳型１０内の四隅以外のところの
溶湯７の凝固がさらに進行する際に上記四隅のシ
エル８を引つ張り、クラツク１１が生じやすいも
のである。 In the above configuration, molten metal 7 is injected between both rollers 1 from nozzle 4, molten metal 7 is cooled by cooling water supplied into both rollers 1 to form shell 8, and slab 9 is pulled out in the direction of arrow A. However, at this time, the cooling rate of the molten metal 7 becomes faster at the four corners of the mold 10 formed by both weirs 5 and 6 and the roller 1, and the molten metal 7 at the four corners solidifies faster to form the shell 8. Therefore, when the solidification of the molten metal 7 in areas other than the four corners of the mold 10 progresses further, the shells 8 at the four corners are stretched, and cracks 11 are likely to occur.
そこで本発明はかかる問題点を解消したシエル
形成法を提供するものであつて、その特徴とする
ところは、互いに接近するツインモールドローラ
間に溶湯を注入し、ツインモールドローラの両端
部内に集中して形成されてツインモールドローラ
の両端部を冷却する第１の冷却水路と、ツインモ
ールドローラの中央部内に集中して形成されてツ
インモールドローラの中央部を冷却する第２の冷
却水路とに、冷却水を第２の冷却水路より第１の
冷却水路に少く供給して、溶湯のツインモールド
ローラ両端部に接する部分をその中央部に接する
部分よりも冷却を遅らせてどの部分も均等厚肉の
シエルを連続的に形成することにあり、この方法
によれば、鋳片の四隅にクラツクが生じることは
なく、内部性状の良好な鋳片を提供することがで
きるものである。 Therefore, the present invention provides a shell forming method that solves these problems, and is characterized by injecting molten metal between twin mold rollers that are close to each other and concentrating it within both ends of the twin mold rollers. A first cooling water channel is formed to cool both ends of the twin mold rollers, and a second cooling water channel is formed concentrated in the center of the twin mold rollers to cool the center part of the twin mold rollers. By supplying less cooling water to the first cooling water channel than to the second cooling water channel, cooling of the portion of the molten metal that contacts both ends of the twin mold roller is delayed than that of the center portion of the twin mold roller, so that all portions have uniformly thick walls. The purpose of this method is to form a shell continuously, and according to this method, cracks do not occur at the four corners of the slab and it is possible to provide a slab with good internal properties.
以下、本発明の一実施例を第３図〜第５図に基
づいて説明する。ツインモールドローラ１内には
第１と第２の冷却水通路１２，１３が穿設されて
おり、第１の冷却水通路１２はツインモールドロ
ーラ１の両端部１Ａ，１Ｃに集中して形成されて
ツインモールドローラ２の両端部１Ａ，１Ｃを冷
却し、第２の冷却水通路１３はツインモールドロ
ーラ１の中央部１Ｂに集中して形成されてツイン
モールドローラ１の中央部１Ｂを冷却するように
構成される。そして、第１の冷却水路１２に供給
する冷却水量を第２の冷却水路１３に供給する冷
却水量よりも少なくすることにより、ツインモー
ルドローラ１の両端部１Ａ，１Ｃをその中央部１
Ｂよりも冷却を遅らせてシエル８の各部分の肉厚
を均等に形成させる。 Hereinafter, one embodiment of the present invention will be described based on FIGS. 3 to 5. First and second cooling water passages 12 and 13 are bored in the twin mold roller 1, and the first cooling water passage 12 is formed in a concentrated manner at both ends 1A and 1C of the twin mold roller 1. The second cooling water passage 13 is formed in a concentrated manner in the central portion 1B of the twin mold roller 1 to cool the central portion 1B of the twin mold roller 1. It is composed of By making the amount of cooling water supplied to the first cooling water channel 12 smaller than the amount of cooling water supplied to the second cooling water channel 13, both ends 1A and 1C of the twin mold roller 1 are
Cooling is delayed compared to B, and the thickness of each part of the shell 8 is formed uniformly.
上記構成において、堰５，６とツインモールド
ローラ１とで形成される鋳型１０内に溶湯７を注
入すると、シエル８が形成されるわけであるが、
このとき、このシエル８は長辺部の両側縁が第１
の冷却水路１２の冷却水により冷却されるととも
に、長辺部の中央部分が第２の冷却水路１３の冷
却水に冷却され、しかも第１の冷却水路１２に供
給される冷却水が第２のそれよりも少量であるこ
とからこの両側縁が中央部よりも冷却が遅れ、結
局、各部分の肉厚が均等のシエル８が形成され
る。次に鋳片９の矢印Ａ方向への引き抜きによつ
てシエル８が連続的にツインモールドローラ１間
にもたらされ、四隅にクラツクのない内部性状の
良好な鋳片９を引き抜くことができる。そして、
第１および第２の冷却水路１２，１３に供給する
冷却水の供給量を調節することによつて、いろい
ろな要因で変化するシエルの形成速度を、鋳片９
の引き抜き中であつてもきわめて容易にかつ正確
に制御することが可能となる。 In the above configuration, when the molten metal 7 is injected into the mold 10 formed by the weirs 5 and 6 and the twin mold roller 1, the shell 8 is formed.
At this time, both edges of the long side of this shell 8 are the first
The central part of the long side is cooled by the cooling water of the second cooling water channel 13, and the cooling water supplied to the first cooling water channel 12 is cooled by the cooling water of the second cooling water channel 13. Since the amount is smaller than that, cooling of both side edges is slower than that of the central portion, and as a result, a shell 8 having equal wall thickness at each portion is formed. Next, by pulling out the slab 9 in the direction of arrow A, the shell 8 is continuously brought between the twin mold rollers 1, and a slab 9 with good internal properties and no cracks at the four corners can be pulled out. and,
By adjusting the amount of cooling water supplied to the first and second cooling channels 12 and 13, the shell formation speed, which varies depending on various factors, can be controlled by
This makes it possible to control the process very easily and accurately even during extraction.
以上述べたごとく本発明の鋳片連続鋳造設備に
おけるシエル形成法によれば、ツインモールドロ
ーラの中央部に集中して形成された第２の冷却水
路よりも、ツインモールドローラの両端部に集中
して形成された第１の冷却水路への冷却水量を少
なくし、溶湯のツインモールドローラ両端部に接
する部分をその中央部に接する部分よりも冷却を
遅らせてどの部分も均等厚肉のシエルを連続的に
形成することが可能となり鋳片の四隅にクラツク
が生じることはなく、内部性状の良好な鋳片を提
供することができるものである。 As described above, according to the shell forming method in the continuous slab casting equipment of the present invention, the second cooling channel is concentrated at both ends of the twin mold rollers, rather than the second cooling channel formed concentrated at the center of the twin mold rollers. By reducing the amount of cooling water flowing into the first cooling channel formed by the twin mold rollers, cooling of the molten metal in the portions that contact both ends of the twin mold roller is delayed than in the portions that contact the center of the twin mold roller, thereby creating a continuous shell with an even thickness in all parts. Therefore, it is possible to form a cast slab with good internal properties without causing cracks at the four corners of the slab.
第１図はツインモールドローラを用いた鋳片連
続鋳造設備の概略説明図、第２図はシエルの形成
状態を示す横断平面図、第３図〜第５図は本発明
の実施例を示し、第３図は概略縦断面図、第４図
は第３図の−矢視図、第５図は第３図の−
矢視図、第６図はツインモールドローラを示す
概略平面図である。
１……ツインモールドローラ、１Ａ……端部、
１Ｂ……中央部、１Ｃ……端部、７……溶湯、８
……シエル、９……鋳片、１１……クラツク、１
２……第１冷却水路、１３……第２冷却水路。
FIG. 1 is a schematic explanatory diagram of continuous casting equipment using twin mold rollers, FIG. 2 is a cross-sectional plan view showing the state of formation of a shell, and FIGS. 3 to 5 show embodiments of the present invention. Fig. 3 is a schematic vertical sectional view, Fig. 4 is a -arrow view of Fig. 3, and Fig. 5 is - of Fig. 3.
The arrow view and FIG. 6 are schematic plan views showing twin mold rollers. 1... Twin mold roller, 1A... End,
1B... Central part, 1C... End part, 7... Molten metal, 8
...Ciel, 9...Slab, 11...Crack, 1
2...first cooling waterway, 13...second cooling waterway.
Claims (1)
湯を注入し、ツインモールドローラの両端部内に
集中して形成されてツインモールドローラの両端
部を冷却する第１の冷却水路と、ツインモールド
ローラの中央部内に集中して形成されてツインモ
ールドローラの中央部を冷却する第２の冷却水路
とに、冷却水を第２の冷却水路より第１の冷却水
路に少く供給して、溶湯のツインモールドローラ
両端部に接する部分をその中央部に接する部分よ
りも冷却を遅らせてどの部分も均等厚肉のシエル
を連続的に形成することを特徴とする鋳片連続鋳
造設備におけるシエル形成法。1. Molten metal is injected between the twin mold rollers that are close to each other, and a first cooling channel is formed in a concentrated manner in both ends of the twin mold rollers to cool both ends of the twin mold rollers, and a first cooling channel is formed in the center of the twin mold rollers. A second cooling water channel is formed in a concentrated manner and cools the central portion of the twin mold rollers, and a smaller amount of cooling water is supplied to the first cooling water channel than the second cooling water channel to cool the molten metal at both ends of the twin mold rollers. A method for forming a shell in continuous cast slab casting equipment, characterized in that the cooling of the part in contact with the central part is delayed compared to the part in contact with the central part of the cast slab, thereby continuously forming a shell of uniform thickness in all parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6906382A JPS58187244A (en) | 1982-04-23 | 1982-04-23 | Formation of shell in continuous casting installation for ingot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6906382A JPS58187244A (en) | 1982-04-23 | 1982-04-23 | Formation of shell in continuous casting installation for ingot |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58187244A JPS58187244A (en) | 1983-11-01 |
| JPS635179B2 true JPS635179B2 (en) | 1988-02-02 |
Family
ID=13391733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6906382A Granted JPS58187244A (en) | 1982-04-23 | 1982-04-23 | Formation of shell in continuous casting installation for ingot |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58187244A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH038279U (en) * | 1989-06-13 | 1991-01-25 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6233047A (en) * | 1985-08-05 | 1987-02-13 | Nisshin Steel Co Ltd | Twin drum type continuous casting machine |
| FR2653693A1 (en) * | 1989-10-27 | 1991-05-03 | Siderurgie Fse Inst Rech | METHOD AND DEVICE FOR CONTINUOUS CASTING THIN METAL PRODUCTS BETWEEN TWO CYLINDERS. |
-
1982
- 1982-04-23 JP JP6906382A patent/JPS58187244A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH038279U (en) * | 1989-06-13 | 1991-01-25 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58187244A (en) | 1983-11-01 |
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