JPH03142046A - Continuous casting method - Google Patents
Continuous casting methodInfo
- Publication number
- JPH03142046A JPH03142046A JP28069689A JP28069689A JPH03142046A JP H03142046 A JPH03142046 A JP H03142046A JP 28069689 A JP28069689 A JP 28069689A JP 28069689 A JP28069689 A JP 28069689A JP H03142046 A JPH03142046 A JP H03142046A
- Authority
- JP
- Japan
- Prior art keywords
- belt
- gas
- roll
- metal
- continuous casting
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 17
- 238000009749 continuous casting Methods 0.000 title claims description 12
- 239000007789 gas Substances 0.000 claims abstract description 43
- 238000005096 rolling process Methods 0.000 claims abstract description 10
- 239000011261 inert gas Substances 0.000 claims abstract description 4
- 239000002184 metal Substances 0.000 claims description 57
- 229910052751 metal Inorganic materials 0.000 claims description 57
- 239000007790 solid phase Substances 0.000 claims description 15
- 238000007711 solidification Methods 0.000 claims description 13
- 230000008023 solidification Effects 0.000 claims description 13
- 238000002485 combustion reaction Methods 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract description 5
- 238000001816 cooling Methods 0.000 abstract description 5
- 230000001105 regulatory effect Effects 0.000 abstract description 5
- 239000010959 steel Substances 0.000 abstract description 5
- 238000007664 blowing Methods 0.000 abstract description 4
- 239000000112 cooling gas Substances 0.000 abstract 1
- 238000005266 casting Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- -1 ferrous metals Chemical class 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Continuous Casting (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は回転ドラムと駆動ドラム間に張られ、冷却され
走行するエンドレス金属ベルトの上に、鋳造金属を流し
、該金属ベルト上で、鋳造金属を下方より冷却凝固させ
ると共に、該金属ベルトの上に位置し、金属ベルトと同
速で回転する冷却されたスキンロールにより上方から冷
却凝固させ、該スキンロールの直下に設けられ、その外
周に前記金属ベルトを巻き付け、ベルトを駆動させる駆
動ドラムとスキンロール間でベルトを介して、前記、上
下方向より冷却凝固した固相に若干の圧延加工を施しつ
つ、連続して板状鋳塊を製造する、いわゆるベルト、ロ
ール方式の連続鋳造方法に係るものであり、健全鋳塊を
得るために圧延前の固相の生成を均一化させるための方
法を提供するものである。Detailed Description of the Invention [Industrial Application Field] The present invention involves pouring a casting metal onto an endless metal belt that is stretched between a rotating drum and a driving drum and running while being cooled. The metal is cooled and solidified from below, and is cooled and solidified from above by a cooled skin roll located above the metal belt and rotating at the same speed as the metal belt. The metal belt is wound around the belt, and the solid phase cooled and solidified is subjected to a slight rolling process from above and below via the belt between a driving drum that drives the belt and a skin roll, and a plate-shaped ingot is continuously produced. The present invention relates to a so-called belt and roll type continuous casting method, and provides a method for uniformizing the formation of a solid phase before rolling in order to obtain a sound ingot.
上述のオーブンベルト方式の連続鋳造方法は、特公昭６
０−３５２１８号等により公知である。第３図及び第４
図に本方式を示すが、第３図は上面図、第４図は側面図
である。The above-mentioned oven belt continuous casting method was developed in
It is publicly known from No. 0-35218 and the like. Figures 3 and 4
This system is shown in the figures, with FIG. 3 being a top view and FIG. 4 being a side view.
溶湯（１）は図示せぬ移送系により、注湯ノズル（２）
に導入され、走行するベルト（３）上に、場面を制御さ
れ注湯されるが、注湯ノズル（２）を出た溶湯（１）は
回転ドラム（４）の上部に位置する場所に設置されたｌ
対のガスバーナ（５）により、予熱され、ガイド板（６
）により、その軌跡を平行に保ち、ベルト（３）と同速
で走行する１対のダムブロック（７）により、その巾を
規定され、走行するベルト（３）上で、その下面から冷
却され凝固する。そしてベルト（３）の走行に伴い経時
的に凝固相の厚みを増して行き、スキンロール（８）に
より、溶湯（１）の上面側が冷却され凝固し、スキンロ
ール（８）と駆動ロール（９）の最下点直前で全域固相
となり、次に、スキンロール（８）と駆動ロール（９）
により、ベルト（３）を介して僅かに圧延されて板、或
いは条の鋳塊（１０）として連続して製造される。The molten metal (1) is transferred to the pouring nozzle (2) by a transfer system (not shown).
The molten metal (1) is introduced onto the running belt (3) in a controlled manner, and the molten metal (1) that comes out of the pouring nozzle (2) is placed at a location above the rotating drum (4). done l
It is preheated by a pair of gas burners (5), and the guide plate (6
), its width is defined by a pair of dam blocks (7) running at the same speed as the belt (3), and the belt is cooled from its underside on the running belt (3). solidify. As the belt (3) runs, the thickness of the solidified phase increases over time, and the upper surface side of the molten metal (1) is cooled and solidified by the skin roll (8), and the skin roll (8) and drive roll (9) ), the entire area becomes solid phase just before the lowest point, and then the skin roll (8) and drive roll (9)
The ingot is rolled slightly through a belt (3) and continuously produced as a plate or strip ingot (10).
尚（１１）はベルト（３）の下面を冷却する冷却装置で
ある。Note that (11) is a cooling device that cools the lower surface of the belt (3).
しかしながら上述の方法では、凝固の不均一に起因する
圧延割れが鋳塊の中方向の中央部の長手方向に連続して
発生する。この原因について以下に説明する。注湯ノズ
ルから注湯された溶湯は、ベルト上で冷却され下方から
上方に向って固相が威長する、と同時に溶湯は両サイド
のダムブロックにも触れて冷却され横方向へ固相が威長
する。However, in the above method, rolling cracks due to non-uniform solidification occur continuously in the longitudinal direction of the central part of the ingot. The cause of this will be explained below. The molten metal poured from the pouring nozzle is cooled on the belt, and the solid phase grows from the bottom to the top.At the same time, the molten metal also touches the dam blocks on both sides and is cooled, causing the solid phase to move laterally. be dignified.
すなわち、ベルトとダムブロックから構成されるコーナ
部は下方と横方向から固相が戒長し、第３図のＳ−３断
面近傍における固相の厚さ分布は第５図に示す様に、両
サイドが厚く、中央部が薄くなる。この様な不均一な厚
さの固相を、次にスキンロールと駆動ロール間で圧延す
ると、両サイドの厚い固相は高圧下され、中央部の薄い
固相は低圧下となり、高圧下された鋳塊の伸延率は大き
く、又、低圧下された中央部の伸延率が小さくなり、鋳
塊巾方向の伸延率に差を生じ、伸延率の小さい中央部は
、伸延率の大きい両サイドにより引張応力が負荷される
。又、高圧下された両サイドは、スキンロールと駆動ロ
ール間の強い圧延荷重により鋳塊からの奪熱効率が高ま
り、鋳塊冷却が促進されるに対し、中央部においては奪
熱効率が低く鋳塊の暦度は両サイドにくらべて高温であ
り、跪弱である。この様な事により中央部に割れを生ず
るものである。またこれ等の鋳塊の巾方向のミクロｌｌ
１ｗ１は両サイドは加工＆ｌｌ織であるのに対し、中央
部には鋳造組織が認められる。尚、均一凝固相を得るた
めに、ベルト下部の冷却ＢＯＸの冷却能を高めても、そ
の効果は顕著でない、よって、・従来方法では鋳塊の中
央部に割れを有し、又ごクロ＆［ｌ織的にも不均一なも
のであり、健全鋳塊を得るには至っていない。In other words, in the corner part consisting of the belt and dam block, the solid phase extends from below and in the lateral direction, and the thickness distribution of the solid phase near the S-3 cross section in Figure 3 is as shown in Figure 5. It is thicker on both sides and thinner in the middle. When a solid phase with such a non-uniform thickness is then rolled between a skin roll and a drive roll, the thick solid phase on both sides will be rolled down at a high level, and the thin solid phase at the center will be rolled down at a low level and then at a high level. The elongation ratio of the ingot is large, and the elongation ratio in the central part where the reduction is low is small, causing a difference in the elongation ratio in the width direction of the ingot. tensile stress is applied. In addition, on both sides where the pressure is reduced, the heat removal efficiency from the ingot is increased due to the strong rolling load between the skin roll and the drive roll, and the cooling of the ingot is promoted, whereas in the center part, the heat removal efficiency is low and the ingot is The calendar temperature is higher than that of both sides, and it is weak at the knees. This causes a crack in the center. In addition, micro ll in the width direction of these ingots
1w1 has processed &ll weave on both sides, but a cast texture is observed in the center. In addition, even if the cooling capacity of the cooling box at the bottom of the belt is increased in order to obtain a uniform solidified phase, the effect is not significant. [The weave was also non-uniform, and a sound ingot could not be obtained.
従来の問題点は、注湯された溶湯が、ダムブロックによ
り、冷却され横方向（水平方向）に固相が威長し巾方向
に凝固の不均一が生ずる事にあり、これを防止する手段
として、ダムブロックの温度を溶湯温度に近づけるべく
、予熱バーナの加熱能力のアップを計ったが、走行する
ダムブロックの加熱時間が短いために、その効果は不充
分であった。The problem with the conventional method is that the poured molten metal is cooled by the dam block, and the solid phase grows in the lateral direction (horizontal direction), resulting in non-uniform solidification in the width direction. Therefore, in order to bring the temperature of the dam block closer to the temperature of the molten metal, we tried to increase the heating capacity of the preheating burner, but the effect was insufficient because the heating time of the traveling dam block was short.
次に、ダムブロックを取り除いて、その効果を調べた。Next, we removed the dam block and examined its effect.
その結果、不均一凝固の問題は解決し割れも大巾に減少
し、ミクロ組織も均一化の傾向を示した。しかし、注湯
された溶湯が自然流動となるために、溶湯の巾を規定で
きず、製出された鋳塊の巾は、波状に大きく変動し、−
窓中の鋳塊が得られず、鋳塊の両サイドを大巾にトリミ
ングしなければ次工程に送る事が出来なかった。そこで
、種々検討を重ねた結果、注湯後の溶湯の巾を規定する
手段として、注湯ノズルとスキンロールとの間のベルト
上の左右に、ベルト中央部に向って一定量のガスを、常
に噴出させて、溶湯の両側面に当て、溶湯の中広がりを
規制して一定中とし、不均一凝固を防ぎ、均一圧延を施
し、−窓中の割れのない均一組織の鋳塊を連続して得る
に至ったものである。As a result, the problem of uneven solidification was resolved, cracks were greatly reduced, and the microstructure also showed a tendency to become more uniform. However, since the poured molten metal flows naturally, the width of the molten metal cannot be determined, and the width of the produced ingot varies greatly in a wave-like manner.
The ingot inside the window could not be obtained, and the ingot could not be sent to the next process unless both sides of the ingot were trimmed to a wide width. As a result of various studies, we found that as a means of regulating the width of the molten metal after pouring, we decided to inject a certain amount of gas toward the center of the belt on the left and right sides of the belt between the pouring nozzle and the skin roll. It is constantly ejected and applied to both sides of the molten metal, regulating the spread of the molten metal to a constant level, preventing uneven solidification, uniform rolling, and creating a continuous ingot with a uniform structure without cracks in the window. This is what I was able to obtain.
即ち、本発明は回転ドラムと駆動ロール間に張られ、冷
却されて走行する。エンドレス金属ベルトの上に鋳造金
属を流し、該金属ベルト上で、鋳造金属を下方より、凝
固させると共に、駆動ロールの上部に位置し、金属ベル
トと同速で回転する、スキンロールにより鋳造金属を上
方より、冷却凝固させ、スキンロール直下で、外周に前
記金属ベルトを巻き付け、ベルトを駆動させる駆動ドラ
ムとスキンロール間でベルトを介して凝固直後の固相に
若干の圧延加工を施して、連続して板状鋳塊を製造する
連続鋳造設備において、注湯ノズルとスキンロール間の
走行するベルト上の両側部に設置され、ベルトの中央部
に向かって、ガスを噴出し、ベルト上に注湯された溶湯
の巾を規定する一対のサイドガイドを設けたことを特徴
とする連続鋳造方法である。That is, the present invention is stretched between a rotating drum and a drive roll, and runs while being cooled. The cast metal is poured onto an endless metal belt, and the cast metal is solidified from below on the metal belt. At the same time, the cast metal is solidified from below by a skin roll that is located above the drive roll and rotates at the same speed as the metal belt. From above, the solid phase is cooled and solidified, and the metal belt is wrapped around the outer periphery just below the skin roll, and the solid phase immediately after solidification is subjected to a slight rolling process via the belt between the driving drum that drives the belt and the skin roll, and then continuously In continuous casting equipment that produces plate-shaped ingots, the pouring nozzle is installed on both sides of the running belt between the pouring nozzle and the skin roll, and blows gas toward the center of the belt and pours it onto the belt. This continuous casting method is characterized by the provision of a pair of side guides that define the width of the molten metal.
ここで噴出するガスは大気、不活性ガス或いは還元性の
燃焼炎等が用いられその温度は常温以上であることが望
ましい。The gas ejected here is air, an inert gas, a reducing combustion flame, or the like, and the temperature thereof is preferably at least room temperature.
注湯ノズルとスキンロール間のベルト上に、ベルトの走
行方向に対向し、ベルトの走行方向に、はぼ直角でかつ
、はぼ水平にガスを噴出する１対のサイドガイド（以下
、単にサイドガイドと呼ぶ）を、ベルトの上面に密着、
或いは適量の空隙を設けて設置し、該サイドガイドに、
ガス源より、大気圧以上で、常温以上のガスを導入し、
ガス噴出口より噴出させる。その後溶場を注湯ノズルか
ら、その量を制御しつつ、走行するベルト上に注湯し、
サイドガイドからの、ガスの噴出圧により、ベルト上の
溶湯の巾を規制するものであり、ガスの噴出ゾーン長、
すなわち巾の規制長さはベルト上の溶湯が下部より冷却
されたベルトにより冷却され、流動性を失うスキンロー
ルの直前までとする。この事により、従来の問題点であ
った、ダムブロックからの溶湯の凝固による中方向の不
均一凝固が解決され、第１図に示す如く、均一凝固とな
り、スキンロールと駆動ロール間における若干の圧延で
、中方向の伸延率や奪熱が均一となり、鋳塊の中割れは
全く発生せず、巾の均一な健全鋳塊が安定して得られる
ものである。On the belt between the pouring nozzle and the skin roll, there is a pair of side guides (hereinafter simply referred to as side guides) that are opposed to the belt running direction and emit gas at a right angle to the belt running direction and almost horizontally. (called a guide) tightly against the top surface of the belt.
Alternatively, install it with an appropriate amount of space, and install it in the side guide.
Introduce gas at a pressure above atmospheric pressure and above room temperature from a gas source,
The gas is ejected from the gas outlet. After that, the molten metal is poured from the pouring nozzle onto the running belt while controlling the amount.
The width of the molten metal on the belt is controlled by the gas jet pressure from the side guide, and the gas jet zone length,
That is, the width regulation length is set to just before the skin roll, where the molten metal on the belt is cooled from the lower part by the belt and loses fluidity. This solves the conventional problem of non-uniform solidification in the middle direction due to the solidification of the molten metal from the dam block, resulting in uniform solidification as shown in Figure 1, and a slight difference between the skin roll and the drive roll. During rolling, the elongation rate and heat removal in the middle direction become uniform, no cracks occur in the ingot, and a sound ingot with a uniform width can be stably obtained.
第２図は、オープンベルト方式の連続鋳造設備に本発明
のサイドガイド（１２）を設置した模式図である。以下
に本設備を用いた実施例について説明する。FIG. 2 is a schematic diagram of the side guide (12) of the present invention installed in an open belt continuous casting facility. Examples using this equipment will be described below.
実施例１
サイトガイド（１２）は、第１図及び第２図に示す様に
、左右のダムブロック（７）を取り除いたベルト（３）
上の注湯ノズル（２）とスキンロール（８）間を走行す
るベルト（３）の進行方向に平行に１対が設置され各々
のガス導入口（１３）よりガスが導入され、各々のガス
噴出口（１４）まりベルト（３）中央部に向って、やや
上向きに噴出するが、ガス噴出口（１４）の長手方向に
均一に噴出させるために、ガス導入口（１３）より導入
したガスは、先ず、第１室の分配室（１５）で、サイド
ガイド（１２）の長手方向に分散され、ガス噴出口（１
４）に通しる第２室（１６）に至り、厚さ０．２閣、長
さ２５０閣のガス噴出口（１４）より噴出するものであ
る。又、ガス噴出口（１４）のベルト（３）面からの高
さは、サイドガイド（１２）の底辺を走行するベルト（
３）に密着させた状態でベルト（３）面より３ｍとした
。Example 1 The site guide (12) is a belt (3) with left and right dam blocks (7) removed, as shown in Figures 1 and 2.
A pair is installed parallel to the traveling direction of the belt (3) that runs between the upper pouring nozzle (2) and the skin roll (8), and gas is introduced from each gas inlet (13). The gas introduced from the gas inlet (13) is ejected from the gas outlet (14) slightly upward toward the center of the belt (3), but in order to uniformly eject the gas in the longitudinal direction of the gas outlet (14). First, the gas is distributed in the longitudinal direction of the side guide (12) in the distribution chamber (15) of the first chamber, and the gas is distributed through the gas outlet (1).
The gas reaches the second chamber (16) that passes through the gas chamber 4), and is ejected from the gas outlet (14), which is 0.2 mm thick and 250 mm long. Also, the height of the gas outlet (14) from the belt (3) surface is determined by the height of the belt (3) running along the bottom of the side guide (12).
The distance was 3 m from the belt (3) surface while the belt was in close contact with belt (3).
この様に構成されるサイドガイド（１２）を用い９９゜
７％Ａｆの連続鋳造を行った実施例について以下に説明
する。An example in which continuous casting of 99°7% Af was performed using the side guide (12) constructed in this way will be described below.
溶湯（１）は図示せぬ溶解保持炉より移送樋により、注
湯ノズル（２）の上部に位置するタンデイツシュに移送
され、７５０°Ｃの溶湯（１）の流量が制御され注湯ノ
ズル（２）に導入される。この時までに、サイドガイド
（１２）は対向するガス噴出面間の巾を２６０圓にの圧
力はｏ、２ｋｇ／ａｉに制御保持され、又、１対のサイ
ドガイド（１２）には２８１７ｗ１ｎの空気が噴出して
いる。注湯ノズル（２）に導入された溶湯（１）は、そ
の場面を上昇し、次いでは１５ｍ／ｍｉｎで走行するベ
ルト（３）上に、注湯ノズル（２）の出湯中２３０ｍ＋
ａから流出する。流出した溶湯（１）は流動し、その巾
は広がろうとするが、サイドガイド（１２）より噴出す
る空気により、その巾が規制され約２５０ｍ＋＋巾でほ
ぼ一定となり３５ｒｒｆ／ｈｒの冷却水でその下面を冷
却されつつ走行するベルト（３）により冷却され固相を
成長させながら進行し、スキンロール（８）とベルト（
３）を介する駆動ロール（９）により、若干の圧延がな
されて鋳塊（１０）となる。The molten metal (1) is transferred from a melting and holding furnace (not shown) to the tundish located above the pouring nozzle (2) by a transfer gutter, and the flow rate of the molten metal (1) at 750°C is controlled and transferred to the tundish that is located above the pouring nozzle (2). ) will be introduced. By this time, the width between the opposing gas ejection surfaces of the side guides (12) was controlled to 260 mm, the pressure was controlled to 2 kg/ai, and the pair of side guides (12) had a pressure of 2817w1n. Air is gushing out. The molten metal (1) introduced into the pouring nozzle (2) rises through the scene and then onto the belt (3) running at 15 m/min for 230 m+ during the taping of the pouring nozzle (2).
It flows out from a. The outflowing molten metal (1) flows and tries to expand its width, but the width is regulated by the air jetting out from the side guide (12) and remains approximately constant at about 250 m++ width, and the cooling water of 35 rrf/hr is used to spread the width. The belt (3) running while being cooled on the lower surface advances while being cooled and growing a solid phase, and the skin roll (8) and belt (
3), the ingot is slightly rolled by the drive roll (9) to form an ingot (10).
尚、この際、注湯ノズル（２）と駆動ロール（９）の最
下点間の距離は３５０ｍとし、この間のベルト（３）上
に流出した溶湯（１）の厚み、すなわちベルト（３）上
の場面高さは５±ｌＩｍに制御し、更にスキンロール（
８）と駆動ロール（９）に巻き付けた１ＩＩＩＩＩＬの
ベルト（３）上面間の隙間、すなわちロールギャップは
１．９ｍに設定した。At this time, the distance between the pouring nozzle (2) and the lowest point of the drive roll (9) is 350 m, and the thickness of the molten metal (1) flowing onto the belt (3) between them, that is, the belt (3) The upper scene height was controlled to 5±lIm, and the skin roll (
8) and the upper surface of the 1IIIIL belt (3) wound around the drive roll (9), that is, the roll gap was set to 1.9 m.
これ等の事により１５ｍ／＋ｉｎの鋳造速度で厚さ２ｍ
、中２５０±２ｍの健全な鋳塊（１０〉を連続して得る
事が出来た。Due to these factors, the thickness is 2m at a casting speed of 15m/+in.
, we were able to continuously obtain healthy ingots (10〉) with a diameter of 250±2 m.
又、サイドガイドの底辺部を１階切削し、ベルト（３）
とサイドガイド（１２）の底辺間に１＋ｍの隙間を設け
、上述の条件で鋳造を行ったが、噴出する空気の効果に
より１０１１１１隙間に溶湯（１）が差し込む事なく、
安定した鋳造がなされ健全鋳塊（１０）を得る事が出来
た。Also, cut the bottom part of the side guide to the first level and attach the belt (3).
Casting was carried out under the above conditions with a gap of 1+m between the bottom of the side guide (12) and the side guide (12), but due to the effect of the air blowing out, the molten metal (1) did not get inserted into the gap.
Stable casting was performed and a sound ingot (10) was obtained.
実施例２
次に、酸素を１５０〜４５０ｐｐａ＋含有するタフピッ
チ銅の鋳造に適用した実施例について説明する。Example 2 Next, an example in which the present invention was applied to casting tough pitch copper containing 150 to 450 ppa+ of oxygen will be described.
本実施例では、実施例１と同様に構成した鋳造設備を用
い、サイドガイド（１２）より噴出させるガスをＮ、ガ
スとし、更に前記Ｎ２ガスを加熱し行ったものである。In this example, a casting equipment constructed in the same manner as in Example 1 was used, the gas ejected from the side guide (12) was N gas, and the N2 gas was further heated.
Ｎ、ガスはボンベよりガス導入口（１３）に導かれるが
、この間の配管中に熱交換器を設け２００’Ｃに加熱し
、第２室（１６）での圧力０ 、７ ｋｇ ／ ｄ、流
出量２８Ｉ！、／ｗｉｎをサイドガイド（１２）より噴
出させておき、溶湯中の０２量を２５０ｐｐｍに制御し
た１１５０°Ｃの溶湯をベルト（３）上に流し、その場
面高さを５±１ｆｆｉｆｌｌに制御し、 １．７＋＋ｎ
＋＋のロールギャップで１５ｍ／ｗｉｎの鋳造速度で鋳
造を行った。この場合も、注湯後の溶湯の巾を規制し、
均一凝固がなされ健全な２ｍＸ２５０±２ｍｍの鋳塊を
得る事が出来た。又、鋳塊中に含有する０２量を分析し
た結果２７０ｐｐ１１と僅かに増加しているが、タフピ
ッチ銅として充分に満足出来る値であった。これは、サ
イドガイド（１２）から噴出したＮ、ガスがベルト（３
）上の溶湯の場面全体を覆い大気をシールする効果をも
有するからである。The N gas is led from the cylinder to the gas inlet (13), but a heat exchanger is installed in the piping in between to heat it to 200'C, and the pressure in the second chamber (16) is 0.7 kg/d. Outflow amount 28I! , /win was spouted from the side guide (12), and the molten metal at 1150°C with the amount of 02 in the molten metal controlled to 250 ppm was poured onto the belt (3), and the height of the melt was controlled to 5 ± 1ffill. , 1.7++n
Casting was performed at a casting speed of 15 m/win with a roll gap of ++. In this case as well, the width of the molten metal after pouring is regulated,
It was possible to obtain a healthy ingot of 2 m x 250 ± 2 mm that was uniformly solidified. Furthermore, analysis of the amount of 02 contained in the ingot showed a slight increase of 270 pp11, but the value was sufficiently satisfactory for tough pitch copper. This is caused by N and gas ejected from the side guide (12) from the belt (3).
) This is because it also has the effect of covering the entire molten metal scene above and sealing off the atmosphere.
又、Ｎ！ガスを加熱した目的は、注湯された溶湯の巾方
向からの凝固を防止し、均一凝固させるためであり、２
００°Ｃ未満の温度では、不均一凝固が発生し健全鋳塊
が得にくくなるからである。更に無酸素銅の鋳造を行っ
た、この場合には、噴出するガスを還元性の炎とし、炎
の勢いで溶湯の巾を規制し、更に場面全体を還元性の炎
でシールする事により、鋳造が可能であった。Again, N! The purpose of heating the gas is to prevent the poured molten metal from solidifying from the width direction and to uniformly solidify it.
This is because at temperatures below 00°C, non-uniform solidification occurs and it becomes difficult to obtain a sound ingot. In addition, we cast oxygen-free copper.In this case, the ejected gas was made into a reducing flame, the width of the molten metal was controlled by the force of the flame, and the entire scene was sealed with the reducing flame. Casting was possible.
以上ＡｌやＣｕの非鉄金属について述べたが、本発明方
法は、鉄鋼や他の金属にも適用する事が出来る。又、サ
イドガイドの構造も本実施例に限定するものではなく、
要は、注湯された溶湯の巾を規定し、溶湯側端部からの
凝固を防止するために、注湯ノズルとスキンロール間の
走行するベルト上の左右に１対設け、常温以上の活性或
いは不活性ガスを噴出させる事にある。Although non-ferrous metals such as Al and Cu have been described above, the method of the present invention can also be applied to steel and other metals. Furthermore, the structure of the side guide is not limited to this embodiment.
In short, in order to define the width of the poured molten metal and prevent it from solidifying from the molten metal end, a pair of molten metals are installed on the left and right sides of the belt running between the pouring nozzle and the skin roll. Alternatively, it involves blowing out inert gas.
〔発明の効果）
本発明方法によれば、鋳塊の幅方向で凝固が均一に進キ
テし、均質で健全な鋳塊を長時間安定して製造する事力
咄来る。又本発明方法によれば、鋳造設備の簡素化が可
能であり、設備費の低減も可能である等、工業上顕著な
効果を奏するものである。[Effects of the Invention] According to the method of the present invention, solidification progresses uniformly in the width direction of the ingot, making it possible to stably produce a homogeneous and sound ingot over a long period of time. Further, according to the method of the present invention, it is possible to simplify the casting equipment, and it is also possible to reduce the equipment cost, which brings about significant industrial effects.
第１図は本発明法での均一凝固の様子を示す説明図、第
２図は本発明法の構成を示す上面図である。第３図は従
来の設備の上面図であり、第４図は従来設備の側面図で
ある。第５図は従来設備での不均一凝固の様子を示す説
明図である。
ｌ・・・溶湯、 ２・・・注湯ノズル、 ３・・・ベル
ト、４・・・回転ドラム、 ５・・・バーナ、 ６
・・・ガイド板、７・・・ダムフ′ロンク、 ８・・
・スキンロール、 ９・・・駆動ロール、 １０・・
・鋳塊、 １１・・・冷却ＢＯＸ、１２・・・サイドガ
イド、 １３・・・ガス導入口、 １４・・・ガス噴出
口、
１５・・・分配室、
１６・・・第２室。FIG. 1 is an explanatory diagram showing the state of uniform solidification in the method of the present invention, and FIG. 2 is a top view showing the configuration of the method of the present invention. FIG. 3 is a top view of the conventional equipment, and FIG. 4 is a side view of the conventional equipment. FIG. 5 is an explanatory diagram showing the state of non-uniform solidification in conventional equipment. l...Molten metal, 2...Pouring nozzle, 3...Belt, 4...Rotating drum, 5...Burner, 6
...Guide plate, 7...Dambridge, 8...
・Skin roll, 9... Drive roll, 10...
- Ingot, 11... Cooling BOX, 12... Side guide, 13... Gas inlet, 14... Gas outlet, 15... Distribution chamber, 16... Second chamber.
Claims (4)
走行するエンドレス金属ベルトの上に鋳造金属を流し、
該金属ベルト上で、鋳造金属を下方より凝固させると共
に、駆動ロールの上部に位置し、金属ベルトと同速で回
転するスキンロールにより鋳造金属を上方より冷却凝固
させ、スキンロール直下で、外周に前記金属ベルトを巻
き付け、ベルトを駆動させる駆動ドラムとスキンロール
間でベルトを介して凝固直後の固相に若干の圧延加工を
施して、連続して板状鋳塊を製造する連続鋳造方法にお
いて、注湯ノズルとスキンロール間の走行するベルト上
の両側部に設置され、ベルトの中央部に向かって、ガス
を噴出し、ベルト上に注湯された溶湯の巾を規定する一
対のサイドガイドを設けたことを特徴とする連続鋳造方
法。(1) Cast metal is poured onto an endless metal belt that is cooled and runs between a rotating drum and a driving roll.
The cast metal is solidified from below on the metal belt, and the cast metal is cooled and solidified from above by a skin roll, which is located above the drive roll and rotates at the same speed as the metal belt. In a continuous casting method in which a plate-shaped ingot is continuously manufactured by winding the metal belt and subjecting the solid phase immediately after solidification to a slight rolling process via the belt between a driving drum that drives the belt and a skin roll, A pair of side guides are installed on both sides of the running belt between the pouring nozzle and the skin roll, ejecting gas toward the center of the belt, and defining the width of the molten metal poured onto the belt. A continuous casting method characterized by:
を特徴とする請求項１記載の連続鋳造方法。(2) The continuous casting method according to claim 1, wherein the ejected gas is the atmosphere or an inert gas.
とする請求項１記載の連続鋳造方法。(3) The continuous casting method according to claim 1, wherein the ejected gas is a reducing combustion flame.
徴とする請求項１記載の連続鋳造方法。(4) The continuous casting method according to claim 1, wherein the temperature of the ejected gas is at room temperature or higher.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28069689A JPH03142046A (en) | 1989-10-28 | 1989-10-28 | Continuous casting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP28069689A JPH03142046A (en) | 1989-10-28 | 1989-10-28 | Continuous casting method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03142046A true JPH03142046A (en) | 1991-06-17 |
Family
ID=17628674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP28069689A Pending JPH03142046A (en) | 1989-10-28 | 1989-10-28 | Continuous casting method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03142046A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995023661A1 (en) * | 1994-03-04 | 1995-09-08 | Mannesmann Ag | Process and device for cooling molten steel |
-
1989
- 1989-10-28 JP JP28069689A patent/JPH03142046A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995023661A1 (en) * | 1994-03-04 | 1995-09-08 | Mannesmann Ag | Process and device for cooling molten steel |
| CN1046447C (en) * | 1994-03-04 | 1999-11-17 | 曼内斯曼股份公司 | Process and device for cooling molten steel |
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