JPH0562019B2 - - Google Patents
Info
- Publication number
- JPH0562019B2 JPH0562019B2 JP13088485A JP13088485A JPH0562019B2 JP H0562019 B2 JPH0562019 B2 JP H0562019B2 JP 13088485 A JP13088485 A JP 13088485A JP 13088485 A JP13088485 A JP 13088485A JP H0562019 B2 JPH0562019 B2 JP H0562019B2
- Authority
- JP
- Japan
- Prior art keywords
- casting
- drum
- molten metal
- water
- tundish
- 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
- 238000005266 casting Methods 0.000 claims description 39
- 239000002184 metal Substances 0.000 claims description 20
- 229910052751 metal Inorganic materials 0.000 claims description 20
- 239000000843 powder Substances 0.000 claims description 18
- 238000009749 continuous casting Methods 0.000 claims description 2
- 239000011261 inert gas Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 14
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000007789 sealing Methods 0.000 description 4
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000011819 refractory material Substances 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
- B22D11/064—Accessories therefor for supplying molten metal
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はツインドラム方式薄板連続鋳造装置に
関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a twin-drum continuous thin plate casting apparatus.
従来のツインドラム方法薄板連続鋳造装置の機
構の概要を第２図に基づき説明する。水冷鋳造ド
ラム１，１′とサイドせき２，２′からなる空間に
タンデイツシユ５より注湯される溶湯４は、水冷
鋳造ドラム１，１′面上で凝固し一体化されて鋳
片３となる。また鋳造時においては水冷鋳造ドラ
ム１，１′タンデイツシユ５及びサイドせき２，
２′で形成される空間を無酸化雰囲気とするため
シールチヤンバー６でおおいシールガス管７，
７′にてシールガス（Ar、N2）を流して外気の
流入を防いでいる。さらに溶湯の湯面の温度低下
を防止するためキヤステイシグパウダ８をキヤス
テイングパウダ供給箱９，９′より供給管１０，
１０′を通じて湯面上に供給している。
An overview of the mechanism of a conventional twin-drum continuous thin plate casting apparatus will be explained with reference to FIG. The molten metal 4 poured from the tundish 5 into the space formed by the water-cooled casting drums 1, 1' and the side weirs 2, 2' solidifies on the surfaces of the water-cooled casting drums 1, 1' and becomes a slab 3. . In addition, during casting, water-cooled casting drums 1, 1' tundish 5, side weirs 2,
A seal gas pipe 7 is covered with a seal chamber 6 to make the space formed by 2' a non-oxidizing atmosphere.
A seal gas (Ar, N 2 ) is flowed at 7' to prevent outside air from entering. Further, in order to prevent the temperature of the molten metal from decreasing, the casting powder 8 is supplied from the casting powder supply boxes 9, 9' to the supply pipe 10,
It is supplied above the hot water surface through 10'.
上記従来技術においては、キヤステイングパウ
ダを一定量連続的に供給することが困難なため湯
面の温度が変化し鋳片の表面性状を著しく害して
いた。また供給管が多数あるためシール性が必ず
しも満足行くものではなかつた。
In the above-mentioned conventional technology, since it is difficult to continuously supply a constant amount of casting powder, the temperature of the molten metal surface changes, which significantly impairs the surface quality of the slab. Furthermore, since there are a large number of supply pipes, the sealing performance is not always satisfactory.
本発明は前述の不具合を解消し表面性状の良好
な鋳片を連続的に製造するツインドラム方式薄板
連続鋳造装置を提供しようとするものである。 The present invention aims to solve the above-mentioned problems and to provide a twin-drum type continuous thin plate casting apparatus that can continuously produce slabs with good surface properties.
本発明は上述の目的を達成する手段として、一
定の流量ガスにより、一定量のキヤステイングパ
ウダを、連続的に供給するようにした点及びキヤ
ステイングパウダを供給するガスを従来のシール
ガスと兼ねさせた点を特徴とするツインドラム方
式薄板連続鋳造装置である。
As a means for achieving the above-mentioned objects, the present invention continuously supplies a fixed amount of casting powder with a fixed flow rate of gas, and the gas that supplies the casting powder can also be used as a conventional sealing gas. This is a twin-drum type continuous thin plate casting machine that is characterized by the following features:
すなわち、本発明は金属薄板の厚さに相当する
間隙を置いて水平に並置し、互いに回転方向を異
にする２本の水冷鋳造ドラムと、同ドラムの側面
に当接されたサイド堰と前記ドラムとサイド堰か
らなる空間に溶湯を供給するタンデイツシユと、
前記ドラム、サイド堰及びタンデイツシユからな
る空間を大気から遮断するシールチヤンバーと、
前記空間内の溶湯表面にキヤステイングパウダー
を不活性ガスと共に供給する手段とを具備したこ
とを特徴とする薄板連続鋳造装置。 That is, the present invention comprises two water-cooled casting drums that are arranged horizontally with a gap corresponding to the thickness of the thin metal plate and rotate in different directions, a side weir that is in contact with the side surface of the drum, and A tandem pump that supplies molten metal to a space consisting of a drum and a side weir,
a seal chamber that isolates a space consisting of the drum, side weir, and tundish from the atmosphere;
A thin plate continuous casting apparatus characterized by comprising means for supplying casting powder together with an inert gas to the surface of the molten metal in the space.
（構成）
第１図に基づいて本発明を説明する。この装置
は、薄板鋳片３を鋳造する水冷鋳造ドラム１，
１′、この水冷鋳造ドラム１，１′間の溶湯４の洩
れを防止するサイドせき２，２′、溶湯４を溜め
るタンデイツシユ５、キヤステイングパウダ７を
供給するためのキヤステイングパウダ供給箱８及
び供給管９などを主要構成部材としている。(Structure) The present invention will be explained based on FIG. This device includes a water-cooled casting drum 1 for casting thin plate slabs 3;
1', side weirs 2, 2' for preventing leakage of the molten metal 4 between the water-cooled casting drums 1, 1', a tundish 5 for storing the molten metal 4, a casting powder supply box 8 for supplying the casting powder 7, and The main components include the supply pipe 9 and the like.
この装置を詳細に説明すると、水冷鋳造ドラム
１，１′は水平に設置されており、図示しない駆
動装置により回転（矢示方向）駆動される。この
水冷鋳造ドラム１，１′は例えば銅または銅合金
あるいは鋼材により形成され、内部に水冷機構を
内蔵するものであり溶湯４との接触面積を大きく
得るために相当大径のドラムとなつている。 To explain this apparatus in detail, water-cooled casting drums 1 and 1' are installed horizontally and are driven to rotate (in the direction of the arrow) by a drive device (not shown). The water-cooled casting drums 1 and 1' are made of copper, copper alloy, or steel, for example, and have a built-in water-cooling mechanism, and have a considerably large diameter in order to have a large contact area with the molten metal 4. .
また、水冷鋳造ドラム１，１′の両端部には、
サイドをシールするための耐火材からなるサイド
せき２，２′が押し当てられており、２本の水冷
鋳造ドラム１，１′と２個のサイドせき２，２′で
形成される空間に溶湯４か注湯される。注湯され
た溶湯４の湯面の温度低下を防止するため、キヤ
ステイングパウダ７をキヤステイングパウダ供給
箱８から一定流量のシールガス（Ar、N2）によ
り供給管９を通じて湯面に一定供給する。溶湯４
が水冷鋳造ドラム１，１′を表面に接触して冷却
されて生成した凝固シエルは一体化され鋳片３と
なる。 In addition, at both ends of the water-cooled casting drums 1 and 1',
Side weirs 2, 2' made of refractory material for sealing the sides are pressed against each other, and the molten metal is poured into the space formed by the two water-cooled casting drums 1, 1' and the two side weirs 2, 2'. 4 or more hot water is poured. In order to prevent the temperature of the poured molten metal 4 from decreasing, casting powder 7 is constantly supplied from a casting powder supply box 8 to the surface of the molten metal through a supply pipe 9 with a constant flow of seal gas (Ar, N 2 ). do. Molten metal 4
is cooled by contacting the surface of the water-cooled casting drums 1, 1', and the solidified shell produced is integrated into a slab 3.
（作用）
以上で述べたツインドラム方式薄板連続鋳造装
置において、キヤステイングパウダを一定流量の
ガスにより一定量、連続的に供給する。また、シ
ールガスをキヤステイングパウダ供給ガスと兼ね
る。(Function) In the twin-drum continuous thin plate casting apparatus described above, a constant amount of casting powder is continuously supplied with a constant flow rate of gas. Further, the seal gas also serves as the casting powder supply gas.
（具体例）
鋼を鋳造した場合の構成部材の寸法並びに諸条
件は次のとおりである。(Specific example) The dimensions and various conditions of the component parts when steel is cast are as follows.
(1) 水冷鋳造ドラム
鋼製で内部水冷方式。ドラム径は2000mmφ、
ドラム幅は1200mm、鋳片寸法は3.0mmｔ×1200
mm幅でありこのときのドラム回転速度（鋳造速
度）は約29ｍ／minである。(1) Water-cooled casting drum Made of steel and internally water-cooled. The drum diameter is 2000mmφ,
Drum width is 1200mm, slab size is 3.0mmt x 1200
mm width, and the drum rotation speed (casting speed) at this time is approximately 29 m/min.
(2) 溶湯
通常の鋼の場合タンデイツシユ内の溶湯温度
は1520〜1560℃である。(2) Molten metal In the case of normal steel, the temperature of the molten metal in the tundish is 1520 to 1560℃.
(3) キヤステイングパウダ
キヤステイングパウダはSiO2、CaO、Na2O
を主成分とするものであり、溶融点は1030℃で
ある。(3) Casting powder Casting powder is SiO 2 , CaO, Na 2 O
It has a melting point of 1030℃.
尚、パウダーの供給量は0.5Kg／tonで連続供
給した。 The powder was continuously supplied at a rate of 0.5 kg/ton.
(4) シールガス
シールガスはArを使用し、200／minの流
量とした。(4) Seal gas Ar was used as the seal gas, with a flow rate of 200/min.
以上の諸条件で鋼を鋳造し、表面性状の良好
な鋳片を連続的に製造することができた。 Steel was cast under the above conditions, and slabs with good surface quality could be continuously produced.
本発明は、以上述べたとおり一定流量のガスに
より溶湯の湯面に一定量のキヤステイングパウダ
を連続供給し、また、タンデイツシユ、水冷鋳造
ドラム及びサイドせきによつて形成される空間を
無酸化雰囲気とするためのシールガス（Ar、
N2）をキヤステイングパウダ供給用のガスと兼
ねることにより湯面の温度を均一に保つとともに
シール性を向上させ表面性状の良好な鋳片が製造
できるものである。
As described above, the present invention continuously supplies a fixed amount of casting powder to the surface of the molten metal using a fixed flow rate of gas, and also creates a non-oxidizing atmosphere in the space formed by the tundish, water-cooled casting drum, and side weir. Seal gas (Ar,
By using N 2 ) also as a gas for supplying casting powder, the temperature of the molten metal surface can be kept uniform, the sealing performance can be improved, and slabs with good surface quality can be produced.
第１図は本発明の一実施例装置の図である。第
２図は従来法の一実施例装置の図である。
FIG. 1 is a diagram of an apparatus according to an embodiment of the present invention. FIG. 2 is a diagram of an apparatus according to an embodiment of the conventional method.
Claims (1)
に並置し、互いに回転方向を異にする２本の水冷
鋳造ドラムと、同ドラムの側面に当接されたサイ
ド堰と前記ドラムとサイド堰からなる空間に溶湯
を供給するタンデイツシユと、前記ドラム、サイ
ド堰及びタンデイツシユからなる空間を大気から
遮断するシールチヤンバーと、前記空間内の溶湯
表面にキヤステイングパウダーを不活性ガスと共
に供給する手段とを具備したことを特徴とする薄
板連続鋳造装置。1. Two water-cooled casting drums arranged horizontally with a gap equivalent to the thickness of the thin metal plate and rotating in different directions, a side weir in contact with the side surface of the drum, and the drum and the side weir. a tundish for supplying molten metal into a space consisting of a tundish; a seal chamber for shielding a space constituted by the drum, a side weir, and a tundish from the atmosphere; and means for supplying casting powder together with an inert gas to the surface of the molten metal in the space. A thin plate continuous casting device characterized by comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13088485A JPS61289951A (en) | 1985-06-18 | 1985-06-18 | Continuous casting device for thin sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13088485A JPS61289951A (en) | 1985-06-18 | 1985-06-18 | Continuous casting device for thin sheet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61289951A JPS61289951A (en) | 1986-12-19 |
| JPH0562019B2 true JPH0562019B2 (en) | 1993-09-07 |
Family
ID=15044947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13088485A Granted JPS61289951A (en) | 1985-06-18 | 1985-06-18 | Continuous casting device for thin sheet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61289951A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2575681B2 (en) * | 1987-01-16 | 1997-01-29 | 株式会社日立製作所 | Thin slab continuous casting machine |
| JPH01180753A (en) * | 1987-12-28 | 1989-07-18 | Kawasaki Steel Corp | Continuous casting method |
| JP2591098B2 (en) * | 1988-07-26 | 1997-03-19 | 石川島播磨重工業株式会社 | Twin roll continuous casting machine |
| WO1993022087A1 (en) * | 1992-04-24 | 1993-11-11 | Ishikawajima-Harmia Heavy Industries Company Limited | Vapor extraction in continuous strip casting |
| KR100489238B1 (en) * | 2000-08-25 | 2005-05-17 | 주식회사 포스코 | Method for Manufacturing Strip Using Twin Roll Strip Caster |
-
1985
- 1985-06-18 JP JP13088485A patent/JPS61289951A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61289951A (en) | 1986-12-19 |
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