JPS61182857A - Device for controlling flow rate of tundish for continuous casting - Google Patents
Device for controlling flow rate of tundish for continuous castingInfo
- Publication number
- JPS61182857A JPS61182857A JP60022029A JP2202985A JPS61182857A JP S61182857 A JPS61182857 A JP S61182857A JP 60022029 A JP60022029 A JP 60022029A JP 2202985 A JP2202985 A JP 2202985A JP S61182857 A JPS61182857 A JP S61182857A
- Authority
- JP
- Japan
- Prior art keywords
- nozzle
- flow rate
- tundish
- hole
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/14—Closures
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
本発明は連続鋳造用タンディツシュにおける流量制御装
置に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a flow control device in a continuous casting tundish.
従来の技術
近年製鋼の分野における連続鋳造化については著しいも
のがある。これは連続鋳造技術が一般の造塊法に比較し
て高い生産性と歩留ｔ−得られるためである。連続鋳造
法は一般的にはタンディツシュと呼ばれる溶湯容器から
鋳型内に溶鋼を注入し鋳型内で固化せしめつつ鋳片を連
続的に下方に引抜くものである。その際問題となるのは
溶鋼流量の制御であり、更に鋼の品質向上を狙う場合に
は大気速断の確実性が鋳造の要点となる。BACKGROUND OF THE INVENTION In recent years, there has been remarkable progress in continuous casting in the field of steel manufacturing. This is because continuous casting technology provides higher productivity and yield than the general ingot making method. Continuous casting generally involves injecting molten steel into a mold from a molten metal container called a tundish, allowing it to solidify within the mold, and then continuously pulling the slab downward. In this case, the problem is controlling the flow rate of molten steel, and when aiming to improve the quality of steel, the reliability of atmospheric rapid cutting is the key point in casting.
現在採用されている流量制御方法には主に次の３種類が
挙げられる。There are mainly three types of flow rate control methods currently employed:
■オープン方式
■ ノズル・ストッパ一方式
■ スライドバルブ方式
発明が解決しようとする問題点
前記オープン方式は主に建設用棒鋼等を鋳造するビレッ
トマシンに多い型でノズルの口径のみで流量を制御する
方式である。そのためノズルの口径が溶損によシ拡大し
たり、鋼中の非金属介在物で閉塞したシすると所期の流
量が得られないという欠点がある。■Open system■ Nozzle/stopper one system■Slide valve systemProblems that the invention aims to solveThe open system is a type that is common in billet machines that mainly cast steel bars for construction, and is a system that controls the flow rate only by the diameter of the nozzle. It is. Therefore, if the diameter of the nozzle becomes enlarged due to melting damage or becomes blocked by non-metallic inclusions in the steel, the desired flow rate cannot be obtained.
前記ノズル・ストッパ一方式はノズルの上端にストッパ
ー（栓）を設置し流量制御を行なうが、ノズルまたはス
トッパーの嵌合面が溶損されると流量制御が困難となる
し、非金属介在物の多い溶鋼の場合は嵌合面に閉塞現象
が発生し制御不能となる場合もある。In the nozzle/stopper one-way type, a stopper (plug) is installed at the upper end of the nozzle to control the flow rate, but if the fitting surface of the nozzle or stopper is damaged by melting, it becomes difficult to control the flow rate, and non-metallic inclusions may occur. If there is a large amount of molten steel, a clogging phenomenon may occur on the mating surfaces and control may become uncontrollable.
前記スライドパルプ方式はタンディツシュの下に穴のあ
いた板状の耐火物を２枚もしくは３枚あわせてそのうち
の１枚を摺動することにょカノズルの開閉の操作をする
機構である。この方式は耐火物の溶損には非常（威力を
発揮するが、−万欠点として構成する耐火物間の目地数
が多く外気の巻き込みが発生し易く鋼の清浄化という面
で前述のノズル・ストッパ一方式よシ劣ることが知られ
ている。The slide pulp method is a mechanism in which the nozzle is opened and closed by sliding one of two or three plate-shaped refractories with holes under the tundish. Although this method is very effective against melting and damaging refractories, one drawback is that there are many joints between the refractories, which makes it easy for outside air to be drawn in. It is known that the stopper type is inferior to the one-sided type.
問題点を解決するための手段
本発明はこれら従来の流量制御装置の欠点を補うために
全体的にはノズル・ストッパータイプに近い構造を有し
、流量制御部分はスライドバルブタイプに近い構造とす
ることで流量制御の信頼性と鋼品質の向上を目的とし友
ものである。Means for Solving the Problems In order to compensate for the shortcomings of these conventional flow rate control devices, the present invention has an overall structure similar to a nozzle/stopper type, and the flow rate control portion has a structure similar to a slide valve type. The purpose of this is to improve the reliability of flow control and the quality of steel.
本発明者等は種々検討の結果本発明の開発に成功したも
のであり、本発明の技術的構成は前記特許請求の範囲各
項に明記したとおりであり、本発明の実施の数例を示す
添付図面に基いて詳述する。The inventors of the present invention have succeeded in developing the present invention as a result of various studies, and the technical configuration of the present invention is as specified in each claim above, and the present inventors have described several examples of implementation of the present invention. The details will be explained based on the attached drawings.
第１図は本発明流量制御装置の使用態様を示す断面図、
第２図は本発明装置の要部を示す断面側面図、第３図は
第２図の矢視側面図である。図面において１はノズルで
あり、該ノズル１はタンディツシュ内に突出した延長部
１′を具備している。該延長部１′にはノズル１内の溶
湯流通孔１０に連通ずる流量制御口６をノズル１の・ｇ
ｌ壁に相対面して２個（複数個）穿設、開口しである。FIG. 1 is a sectional view showing how the flow rate control device of the present invention is used;
FIG. 2 is a cross-sectional side view showing essential parts of the apparatus of the present invention, and FIG. 3 is a side view taken in the direction of the arrows in FIG. In the drawing, 1 is a nozzle, which nozzle 1 has an extension 1' projecting into the tundish. The extension part 1' has a flow control port 6 communicating with the molten metal flow hole 10 in the nozzle 1.
Two (plural) holes are made and opened facing each other on the wall.
２は摺動制御棒を示し、ノズル１の溶湯流通孔１０内に
上方より摺動自在に嵌挿しである。なお第１図において
３はノズル受けれんが、４はタンディツシュ本体、５は
溶湯を夫々示す。Reference numeral 2 denotes a sliding control rod, which is slidably inserted into the molten metal flow hole 10 of the nozzle 1 from above. In FIG. 1, 3 indicates a nozzle receiving brick, 4 indicates a tundish body, and 5 indicates a molten metal.
第４図は本発明装置の別の例を示し、この例の摺動制御
具２′は図示の如くノズル延長部１′を囲繞しかつ摺動
する外筒とした構造としである。FIG. 4 shows another example of the device of the present invention, and the sliding control device 2' in this example has a structure as an outer cylinder that surrounds the nozzle extension 1' and slides as shown.
発明の効果
本発明は上述の如き構成からなってお〕、か＼る構成に
よって次の如き効果が達成される。Effects of the Invention The present invention has the above-mentioned configuration, and the following effects are achieved by the configuration.
ｆｌ） 本発明品を使用することによシ流量制御は流
入孔と制御具で行なわれ、孔の断面積が容易に選択でき
るためスライドパルプ方式と同様に流量制御の確実性が
高い。また外部に通じる目地が少ないため、空気の巻き
込みが少なく溶鋼の２次酸化が減少することによシ鋼の
品貿が向上する。fl) By using the product of the present invention, flow rate control is performed by the inlet hole and the control device, and since the cross-sectional area of the hole can be easily selected, the flow rate control is as reliable as the slide pulp method. Furthermore, since there are fewer joints leading to the outside, there is less air entrapment and secondary oxidation of molten steel is reduced, thereby improving trade in steel products.
（２）一方流入孔、６は孔を長くしたシ、個数を増すこ
とで断面積を大きくでき、孔が閉塞傾向になった際に制
御棒を引き上げていけば必要断面積を確保することが容
易に可能である。(2) On the other hand, the inlet hole 6 has a longer hole. By increasing the number of holes, the cross-sectional area can be increased, and when the hole tends to become clogged, the necessary cross-sectional area can be secured by pulling up the control rod. It is easily possible.
第１図は本発明流量制御装置の使用態様を示す断面図、
第２図は本発明装置の要部を示す断面側面図、第３図は
第２図の矢視側面図、第４図は本発明の他の例を示す断
面図であ〕、図中＝ １はノズル、 ２は摺動制御棒、
３はノズル受けれんが、 ４はダンディツシュ本体、
５は溶湯。
６は流量制御口、 １０は溶湯流通孔。FIG. 1 is a sectional view showing how the flow rate control device of the present invention is used;
FIG. 2 is a cross-sectional side view showing essential parts of the device of the present invention, FIG. 3 is a side view taken in the direction of the arrow in FIG. 2, and FIG. 4 is a cross-sectional view showing another example of the present invention. 1 is a nozzle, 2 is a sliding control rod,
3 is the nozzle receiving brick, 4 is the dandy tshu body,
5 is molten metal. 6 is a flow control port, and 10 is a molten metal flow hole.
Claims (3)
を有し、該延長部側壁にノズル内溶湯流通孔に連通する
流量制御口を開口し、該流量制御口を開閉する摺動制御
具を具備する連続鋳造用タンディッシュ流量制御装置。(1) A sliding control device that has an extension on the nozzle head that projects into the tundish, opens a flow control port that communicates with the molten metal flow hole in the nozzle on the side wall of the extension, and opens and closes the flow control port. A tundish flow control device for continuous casting.
棒状体である特許請求の範囲第１項記載の連続鋳造用タ
ンディッシュ流量制御装置。(2) The tundish flow rate control device for continuous casting according to claim 1, wherein the sliding control tool is a rod-shaped body that slides within the nozzle molten metal flow hole.
る外筒である特許請求の範囲第１項記載の連続鋳造用タ
ンディッシュ流量制御装置。(3) The tundish flow rate control device for continuous casting according to claim 1, wherein the sliding control device is an outer cylinder that surrounds and slides on the extension portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60022029A JPS61182857A (en) | 1985-02-08 | 1985-02-08 | Device for controlling flow rate of tundish for continuous casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60022029A JPS61182857A (en) | 1985-02-08 | 1985-02-08 | Device for controlling flow rate of tundish for continuous casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61182857A true JPS61182857A (en) | 1986-08-15 |
| JPH0469021B2 JPH0469021B2 (en) | 1992-11-05 |
Family
ID=12071549
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60022029A Granted JPS61182857A (en) | 1985-02-08 | 1985-02-08 | Device for controlling flow rate of tundish for continuous casting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61182857A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4913324A (en) * | 1987-08-03 | 1990-04-03 | Didier-Werke Ag | Rotary valve for a metallurgical vessel and rotor and stator therefor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49110015U (en) * | 1973-01-16 | 1974-09-19 | ||
| JPS5493014U (en) * | 1977-12-15 | 1979-07-02 | ||
| JPS59220263A (en) * | 1983-05-30 | 1984-12-11 | Kurosaki Refract Co Ltd | Immersion nozzle |
-
1985
- 1985-02-08 JP JP60022029A patent/JPS61182857A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS49110015U (en) * | 1973-01-16 | 1974-09-19 | ||
| JPS5493014U (en) * | 1977-12-15 | 1979-07-02 | ||
| JPS59220263A (en) * | 1983-05-30 | 1984-12-11 | Kurosaki Refract Co Ltd | Immersion nozzle |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4913324A (en) * | 1987-08-03 | 1990-04-03 | Didier-Werke Ag | Rotary valve for a metallurgical vessel and rotor and stator therefor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0469021B2 (en) | 1992-11-05 |
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