JPH02169158A - Tundish and continuous casting method using it - Google Patents
Tundish and continuous casting method using itInfo
- Publication number
- JPH02169158A JPH02169158A JP32303988A JP32303988A JPH02169158A JP H02169158 A JPH02169158 A JP H02169158A JP 32303988 A JP32303988 A JP 32303988A JP 32303988 A JP32303988 A JP 32303988A JP H02169158 A JPH02169158 A JP H02169158A
- Authority
- JP
- Japan
- Prior art keywords
- steel
- tank
- molten metal
- opening
- closing means
- 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
- 238000009749 continuous casting Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims description 23
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 48
- 239000010959 steel Substances 0.000 claims abstract description 48
- 229910052751 metal Inorganic materials 0.000 claims abstract description 26
- 239000002184 metal Substances 0.000 claims abstract description 26
- 238000005266 casting Methods 0.000 claims abstract description 23
- 230000005674 electromagnetic induction Effects 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 50
- 239000002436 steel type Substances 0.000 claims description 18
- 238000005192 partition Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 3
- 230000002542 deteriorative effect Effects 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 description 16
- 239000002893 slag Substances 0.000 description 8
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 230000006698 induction Effects 0.000 description 5
- 241000473391 Archosargus rhomboidalis Species 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910001021 Ferroalloy Inorganic materials 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
- 230000005587 bubbling Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 229910052748 manganese Inorganic materials 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 241001385733 Aesculus indica Species 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000000638 solvent extraction 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)
この発明は溶融金属の連続鋳造に使用するタンデイツシ
ュと、そのタンデイツシュを用いて異なる種類の綱を連
続鋳造する方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a tundish used for continuous casting of molten metal, and a method for continuously casting different types of steel using the tundish.
(従来の技術とその問題点)
連続鋳造法は、エネルギーの節約、歩留りの向上など、
実益の大きな鋳造法であり、綱をはじめとして、銅、ア
ルミニウムその他の金属の鋳造にも広(採用されている
。最近、特に鯛の連続鋳造では、複数の取鍋から次々に
給湯して同一鋼種の連連鋳のみならず、異なった鋼種(
異鋼種)をも連続鋳造することも行われ、鋳片の生産性
は大きく向上しつつある。(Conventional technology and its problems) The continuous casting method has many advantages such as saving energy and improving yield.
It is a highly profitable casting method, and has been widely used for casting rope, copper, aluminum, and other metals.Recently, continuous casting of sea bream, in particular, involves heating water from multiple ladles one after another and using the same method. Not only continuous casting of steel types, but also different steel types (
Continuous casting of different types of steel is also being carried out, and the productivity of slabs is greatly improving.
連続鋳造の際には、取鍋からの湯(溶融金属)は−旦タ
ンディッシュに受けられ、タンデイツシュから注入ノズ
ルによって鋳型(モールド)に注湯される。タンデイツ
シュは、ここに湯を溜めて鋳型への注入条件を一定にす
るという重要な役割を有するだけでなく、最近では、こ
こで湯の精錬と成分調整を行うことも提案されている(
例えば、特公昭56−39366号公報、同62−21
2044号公報)。During continuous casting, hot water (molten metal) from a ladle is first received in a tundish, and then poured into a mold by an injection nozzle from the tundish. The tandaitsu not only plays an important role in storing hot water and keeping the conditions for pouring it into the mold constant, but it has also recently been proposed that the hot water be refined and its composition adjusted here (
For example, Japanese Patent Publication No. 56-39366, No. 62-21
Publication No. 2044).
前記のとおり、最近では連連鋳が指向されているが、こ
れには下記のような問題点がある。(以下、主に、鋼の
連連鋳を例として記述する。)■ 同鋼種の連連鋳の場
合、一つの取鍋からの給湯の末期には、タンデイツシュ
内の湯が少なくなって、タンデイツシュから鋳型へのス
ラグの流入が起こり、鋳片の継ぎ目の品質が悪くなる。As mentioned above, continuous casting has recently been trending, but this has the following problems. (Hereinafter, continuous casting of steel will mainly be described as an example.) ■ In the case of continuous casting of the same type of steel, at the end of the supply of hot water from one ladle, the hot water in the tundish will decrease and the tundish will be moved from the tundish to the mold. This causes slag to flow into the slab and deteriorates the quality of the slab joints.
■ 異鋼種の連連鋳の場合、前の鋼Aを鋳込み切ってし
まうとスラグの流出によって鋳片の品質が悪化する。前
の鋼Aを残して次の@Bを給湯すると、異鋼種が混合し
て所期の綱Bと異なる組成の鋼になってしまう。■ In the case of continuous casting of different steel types, if the previous steel A is completely poured, the quality of the slab will deteriorate due to the outflow of slag. If the previous steel A is left behind and the next steel @B is fed, different steel types will be mixed and the steel will have a composition different from that of the intended steel B.
■の問題点に関しては、「材料とプロセス」第1巻、第
1号(198B) 304頁に一つの解決策が開示され
ている。それは、タンデイツシュを受鋼側と注入側の2
槽とし、その間を一つの通路で連結したH字型のタンデ
イツシュを用いるという方法である。従来のタンデイツ
シュでは、同一槽内で溶鋼の授受を行うため、前編注入
末期の流出スラグの影響が鋳型、鋳片まで達しやすいの
であるが、上記の方法では、取鍋からの溶鋼を受ける楢
と、注入側の槽の仕切られた2槽構造を採用するため、
種間で編上スラグの悪影響を排除でき、さらに2編向時
注入を行ってタンデイツシュ内溶鋼量を後鍋の供給する
溶鋼で一定に保ちつつ、前編末期のスラグの流出を最小
限に抑えることによって、継目部の品質低下を防止でき
るというのである。Regarding the problem (2), one solution is disclosed in "Materials and Processes", Vol. 1, No. 1 (198B), page 304. That is, the tandate is divided into two parts, one on the receiving side and one on the injection side.
This method uses an H-shaped tundish with two tanks connected by a single passage. In conventional tundishing, molten steel is delivered and received in the same tank, so the influence of the slag that flows out at the end of the first injection tends to reach the mold and slab. In order to adopt a two-tank structure with a partitioned tank on the injection side,
It is possible to eliminate the adverse effects of the slag in the treadmill, and to keep the amount of molten steel in the tundish at a constant level with the molten steel supplied from the rear ladle by injecting at the time of two strands, and to minimize the outflow of slag at the end of the first part. This makes it possible to prevent quality deterioration at the seam.
しかしながら、上記のH字型タンデイツシュを使用して
も、■の問題点は解決できない、即ち、異鋼種連連鋳の
場合には、前の鋼を鋳込み切ってしまわなければならず
、スラグ流出の影響は避けられない、仮に、前のfI4
Aを残して、次の鋼を給湯すると、所定の時間鋳型への
注湯を止めてタンデイツシュ内で成分調整を行わなけれ
ばならないが、上記の装置ではその作業に時間を要し、
連連鋳は事実上不可能になってしまう。However, even if the above-mentioned H-shaped tundish is used, problem ① cannot be solved. In other words, in the case of continuous casting of different steel types, the previous steel must be completely poured, and the influence of slag outflow is unavoidable, even if the previous fI4
When pouring the next steel, leaving A in place, it is necessary to stop pouring into the mold for a predetermined period of time and adjust the composition in the tundish, but with the above equipment, this process takes time.
Continuous casting becomes virtually impossible.
(発明が解決しようとする課!!り
本発明は、溶融金属の連続鋳造、特に異なる品種の金属
の連連鋳を行うに適したタンデイツシュを提供すること
、およびそのタンデイツシュを用いて、鋼種の切り換え
の際の前記の問題点のない異鋼種連連鋳を行う新しい連
avl造法を提供することを目的とするものである。(Problems to be Solved by the Invention!!) The present invention provides a tundish that is suitable for continuous casting of molten metal, particularly continuous casting of different types of metal, and uses the tundish to switch steel types. The object of the present invention is to provide a new continuous AVL manufacturing method for continuous casting of different steel types without the above-mentioned problems.
(課題を解決するための手段)
第1図は本発明のタンデイツシュの一例の概念を示す斜
視略図、第2図はこれを平面的に示した詳細図である。(Means for Solving the Problems) FIG. 1 is a schematic perspective view showing the concept of an example of a tundish of the present invention, and FIG. 2 is a detailed plan view showing the same.
本発明のタンデイツシュは、独立した受湯槽lと注湯f
!12とを有し、その間が2本の通路(C1゜C1)で
連結されている。受湯槽1は、開閉手段(望ましくは電
磁誘導装置)3を備えており、この装置は必要に応じて
受湯槽1を二つの室(R+、 Rg)に仕切り、一方の
室の湯が他方へ流入しないように遮断する機能を持つ。The tundish of the present invention has an independent hot water receiving tank l and a hot water pouring tank f.
! 12, which are connected by two passages (C1°C1). The hot water receiving tank 1 is equipped with an opening/closing means (preferably an electromagnetic induction device) 3, and this device partitions the hot water receiving tank 1 into two chambers (R+, Rg) as necessary, and allows hot water in one chamber to flow into the other. It has the function of blocking the inflow.
通路(C+、 Cm)はそれぞれ室R,と室R□とを注
湯槽に連結し、それぞれ開閉手段4+、4gを備えてい
る。この開閉手段は機械的なものでもよいが、後述する
ように、受湯槽と注湯槽の間で湯を循環させる必要から
、3と同じような電磁誘導装置であることが望ましい、
この湯の循環混合のために、前記の受湯槽の開閉手段3
、通路の開閉手段41゜4.のいずれか少なくとも一つ
は!磁誘導装置にしなければならない。The passages (C+, Cm) connect the chambers R and R□ to the pouring tank, and are provided with opening/closing means 4+ and 4g, respectively. This opening/closing means may be mechanical, but as will be described later, since it is necessary to circulate hot water between the receiving tank and the pouring tank, it is preferable to use an electromagnetic induction device similar to 3.
In order to circulate and mix this hot water, the above-mentioned hot water tank opening/closing means 3
, passage opening/closing means 41°4. At least one of them! Must be a magnetic induction device.
注湯槽2は、通常のストッパーを備えた注入ノズル5を
有し、これを介して鋳型に注湯が行われる0図はノズル
2本で2ストランドの連続鋳造を行う例であるが、この
ノズルは2本に限らない。The pouring tank 2 has a pouring nozzle 5 equipped with a normal stopper, through which pouring is carried out into the mold. is not limited to two.
受湯槽の室R1、室R8への給湯は、別々の取鍋からそ
れぞれ行われる。取鍋ばクレーン、その他の装置で受湯
槽の上に位置させればよい。Hot water is supplied to chambers R1 and R8 of the hot water tank from separate ladles. The ladle can be placed above the receiving tank using a crane or other equipment.
次に、上記本発明のタンデイツシュを用いて異鋼種の連
連鋳を行う方法である本願第2の発明を説明する。Next, a second invention of the present application, which is a method for continuous casting of different steel types using the above-mentioned tundish of the present invention, will be explained.
第3図は、この方法の工程を示す模式図である。FIG. 3 is a schematic diagram showing the steps of this method.
の
鋼A(Aは一定組成の鋼種を意味する)を連続鋳造する
工程である。タンデイツシュの受湯槽1の室R1、iに
それぞれ取1% L+ 、 L2から給湯されたIIA
は、注湯槽2、ノズル5を経て鋳型6(第2図参照)に
注入される。このとき、開閉手段3および通Nt c
r、C2は“開”の状態にある。This is a process of continuously casting steel A (A means a steel type with a certain composition). IIA is supplied with 1% hot water from L+ and L2 to chambers R1 and i of the hot water tank 1 of Tandaitsu, respectively.
is poured into a mold 6 (see FIG. 2) through a pouring tank 2 and a nozzle 5. At this time, the opening/closing means 3 and the passage Nt c
r and C2 are in the "open" state.
取鍋L1からの給湯が末期に来た時、開閉手段3を゛閉
′にして室R+とhを仕切る。室R8との湯面が変動し
ないように同時に通路C8を°閉。When the supply of hot water from the ladle L1 reaches its final stage, the opening/closing means 3 is closed to partition the chambers R+ and h. Close passage C8 at the same time so that the hot water level in room R8 does not fluctuate.
にしてい(、この状態で取鍋L1からの綱Aの給湯をつ
づけて通路C8、注湯槽2のノズル5を通してjl’j
lAの鋳造を継続する。(In this state, continue supplying hot water from the line A from the ladle L1 to the passage C8 and through the nozzle 5 of the pouring tank 2.)
Continue casting lA.
゛の
室P1には前の調Aが残留しているから、室R8内に合
金鉄その他の添加剤を添加して成分調整を行う、この調
整は、次の工程■でノズル5を閉じたときに、受湯槽お
よび注?lf’!に残留する鋼への全量を考慮し、工程
■で循環混合したときに全量がmBの組成になるように
行う、ただし、工程■でも成分調整を行うことが可能で
あるから、この工程での成分調整は予備的なものであっ
てもよい。Since the previous preparation A remains in the chamber P1, the composition is adjusted by adding ferroalloy and other additives to the chamber R8.This adjustment is done by closing the nozzle 5 in the next step When the hot water tank and note? lf'! In consideration of the total amount remaining in the steel, this is done so that the total amount will have a composition of mB when circulating and mixing in step 2. However, it is possible to adjust the composition in step 2, so this step The component adjustment may be preliminary.
この工程では、開閉手段3によって、室R1と室R1と
は仕切られているから、室R1内のIIAは添加剤の影
響を受けない。In this step, since the chambers R1 and R1 are separated by the opening/closing means 3, IIA in the chamber R1 is not affected by the additive.
室R3内での成分調整とそのf!認作業にはおよそ7〜
25分を要するが、通常、一つの取鍋からの給湯時間は
30〜40分であるから、取H4t、tからの給湯開始
のタイミングを選べば、室R1内での成分調整の間に、
鋼Aの鋳造が途切れることはない。Component adjustment in room R3 and its f! Approximately 7~
Although it takes 25 minutes, the time required for hot water supply from one ladle is usually 30 to 40 minutes, so if you choose the timing to start hot water supply from intake H4t, t, during the component adjustment in room R1,
Casting of Steel A never stops.
の
取鍋り、からの鋼Aの給湯が終了したら、湯面が変化し
ないように通路C!およびノズル5を°閉。After finishing hot water supply of steel A from the ladle, make sure that the hot water level does not change in the passage C! and close nozzle 5°.
にする0次に開閉手段3を゛開°にする。Then, the opening/closing means 3 is opened.
の
通路C,,Ctを”開°にして受湯N1および注湯槽2
の中の湯を循環させる。この循環は開閉手段3、または
41.4!のいずれかの電磁誘導装置によって行う、こ
れらの王者が全て電磁誘導装置であれば循環効率が高(
なる、湯は、図示のように、通!sc+−Cmを介して
両槽間を循環する。3回程度の循環で湯の攪拌は充分に
なされ、受湯槽および注湯槽内の湯は均一なIIBにな
る。これに要する時間は、例えば、湯の収容能力130
’> (受湯槽と注湯槽の合計)のタンデイツシュで、
循環速度を150 ト、/分としたとき、約3分である
。なお、ここで合金鉄等の添加剤を加えて成分調整を行
うこともできる。この間に鋳型内にキャスティングブロ
ックを装入し、IiAと綱8の仕切りとする。また、取
鍋し5、Lmに替えて鯛Bを収容した取鍋し!、L、を
室R1、P、の上にもって(る。The passages C, , Ct are opened and the hot water receiving tank N1 and pouring tank 2 are opened.
Circulate the hot water inside. This circulation is performed by opening/closing means 3 or 41.4! If all of these kings are electromagnetic induction devices, the circulation efficiency will be high (
Naru, the hot water is as shown in the diagram! It circulates between both vessels via sc+-Cm. The hot water is sufficiently stirred by circulating about three times, and the hot water in the hot water receiving tank and the hot water pouring tank becomes uniform IIB. The time required for this is, for example, the hot water capacity 130
'> (Total of molten metal receiving tank and molten pouring tank) tandaishu,
When the circulation speed is 150 t/min, it takes about 3 minutes. Note that the composition can also be adjusted by adding additives such as ferroalloy. During this time, a casting block is placed in the mold to serve as a partition between IiA and rope 8. Also, ladle 5, a ladle containing sea bream B instead of Lm! , L, are placed above the chamber R1, P.
゛の
注入ノズル5を“開゛にして、鋼Bの連続鋳造を開始す
る。このときは、開閉手段3は″開′にし、通路C5、
C1も゛開°の状態にある。IIBは取鍋り1、L4か
ら所定量づつ給湯される。Continuous casting of steel B is started by opening the injection nozzle 5. At this time, the opening/closing means 3 is opened and the passages C5,
C1 is also in an open state. IIB is supplied with hot water in predetermined amounts from ladle 1 and L4.
以上、■から■までの工程によって、鋼Aから鋼Bに切
り換える異鋼種の連連鋳がスムーズに行われる。鋼Bか
ら再び鋼Aに切り換える場合、或いは更に別の鋼種Cに
変更する場合、いずれも、■から■までの工程を繰り返
せばよい。As described above, continuous casting of a different steel type from steel A to steel B is smoothly performed through the steps from ① to ②. When switching from steel B to steel A again, or when changing to another steel type C, the steps from (1) to (2) may be repeated.
本発明の上記の連連鋳法において、重要なことは、攪拌
に際して受湯槽および注湯槽内の湯面を常に一定に保つ
ことである。湯面レベルが一定であれば、1を磁誘導装
置による仕切り、および循環は、極く低い電力原単位で
工業的に実施できる。In the above-mentioned continuous casting method of the present invention, what is important is to always keep the molten metal level in the receiving tank and pouring tank constant during stirring. If the hot water level is constant, partitioning and circulation using a magnetic induction device can be carried out industrially with extremely low power consumption.
本発明のタンデイツシュは、受湯槽が2室に区分され、
しかもその各々が開閉可能な個別の通路を有しているか
ら、湯面レベルの調整は容易である。In the tundish of the present invention, the hot water tank is divided into two chambers,
Moreover, since each of them has an individual passage that can be opened and closed, the level of the hot water can be easily adjusted.
本発明のタンデイツシュを用いる異調種連連鋳法のもう
一つの特徴は、鯛積切り換えの際の成分調整が極めて短
時間に行えることである。Another feature of the different-tuned continuous casting method using the tundish of the present invention is that the composition adjustment when changing the sea bream stock can be carried out in an extremely short time.
鋼種切り換えの際には、前鋼種の鋳造が済んでからキャ
スティングブロックを装入するが、その間も鋳片の引き
抜きは進行している。鋳型の大きさや鋳込み速度にもよ
るが、通常、キャスティングブロックの装入作業は2〜
3分で終えなければならず、その間に次の鋼種の成分調
整が完了していなければならない、完全に成分調整がな
されていない湯を鋳込めば、その部分は後に切り捨てな
ければならず、歩留りの低下を来す0本発明の方法によ
れば、前記■および■の工程において、成分調整は迅速
に行われ、キャスティングブロックの装入作業の間には
、はぼ成分調整を完了させることができる。When changing steel types, a casting block is inserted after the previous steel type has been cast, but the slab is still being drawn out during this time. Depending on the size of the mold and casting speed, the casting block charging process usually takes 2 to 30 minutes.
It must be completed in 3 minutes, and during that time, the composition adjustment for the next steel type must be completed.If you cast hot water whose composition has not been completely adjusted, that part will have to be discarded later, which will reduce the yield. According to the method of the present invention, in the steps (1) and (2), the composition adjustment is carried out quickly, and it is possible to complete the composition adjustment during the charging work of the casting block. can.
なお、工程■、■では、例えば浸漬ランスからの不活性
ガス吹込み(バブリング)によって攪拌を一層早めるこ
とも可能である。In addition, in steps (1) and (2), it is also possible to further speed up the stirring by, for example, blowing inert gas (bubbling) from an immersion lance.
本発明のタンデイツシュを使用した上記の鋳造法によれ
ば、従来の方法に比較して湯面変動、スラグ巻き込みに
よる品質低下や不良部分切り捨てによる歩留りの低下が
大幅に減少する。According to the above-mentioned casting method using the tundish of the present invention, as compared to the conventional method, the quality deterioration due to fluctuations in the melt level, slag inclusion, and the decrease in yield due to discarding defective parts are significantly reduced.
以下、実施例によって、本発明を更に具体的に説明する
。Hereinafter, the present invention will be explained in more detail with reference to Examples.
〔実施例]
第1図および第2図に示したタンデイツシュを使用して
、下表に示す鋼AとIIBの連連鋳を行った。[Example] Steels A and IIB shown in the table below were continuously cast by using the tandem sheets shown in FIGS. 1 and 2.
表 (綱の組成、wt%) (以下、余白) 、設j01元 タンデイツシュ受湯槽1の容量・・・40ト。Table (composition of class, wt%) (Hereafter, margin) , set j01 yuan Capacity of Tandaitsu hot water tank 1: 40 tons.
タンデイツシュ注湯槽2の容量・・・40トシ通路CI
、 C1の内径・・・300■■φ開閉手段3および4
1.4.は、下記電磁誘導装置i)コイル数:12個(
コイル冷却空冷、耐熱500℃)
ii)ダクト材質:サイアロン−BN
iii)容量: 210kw、循環能カニ 150 ト
>/win■
(+) 容量200 ):/の取!at、、、Lオ(
IIAを収容)からセミパラレル注湯を行い、取ML+
からの給湯が終了したところで上部クレーンによりこれ
を移動させた。この時点で電荷していなかった開閉手段
(電磁誘導装置)3に電荷をかけ、受湯槽1内で室R1
と室R8の間の溶鋼の出入りを止めるとともに、通路C
,の開閉手段(電磁誘導装置)41を°閉゛にして室り
と注湯槽2の間の溶鋼の出入りを停止した。Capacity of tundish pouring tank 2...40 toshi passage CI
, Inner diameter of C1...300■■φ Opening/closing means 3 and 4
1.4. The following electromagnetic induction device i) Number of coils: 12 (
Coil cooling air cooling, heat resistance 500℃) ii) Duct material: Sialon-BN iii) Capacity: 210kw, circulation capacity 150 t>/win■ (+) Capacity 200 ): / no tori! at,,,Lo(
Semi-parallel pouring is performed from the
Once hot water supply from the tank was completed, it was moved by the upper crane. A charge is applied to the opening/closing means (electromagnetic induction device) 3, which was not charged at this point, and the chamber R1 is opened in the receiving tank 1.
In addition to stopping the flow of molten steel between chamber R8 and chamber R8,
, the opening/closing means (electromagnetic induction device) 41 was closed to stop the flow of molten steel into and out between the chamber and the pouring tank 2.
(2)その間、同じ容量の取鍋り、から、受湯槽の室R
,にIIAの給湯をつづけ、通路C8から注湯槽2を経
て鋳型に7ト、7分の鋳込み速度で鋳造を続けた。(2) Meanwhile, from the ladle of the same capacity, to the chamber R of the receiving tank.
, the supply of hot water from IIA continued, and casting continued at a pouring speed of 7 tons and 7 minutes from passage C8 to pouring tank 2 into the mold.
電磁誘導装置3.4.の始動から取t14t、、が空に
なるまでの時間は約30分であった。Electromagnetic induction device 3.4. It took about 30 minutes from the time the engine was started until the tank was empty.
(2) iff磁誘導装置3.41の電荷後、成分調
整用として金属マンガン(99,9%Mn) 鋼0kg
を室R1内の溶鋼(20)1) ニ投入し、AhOs9
0X 5iOzlOX(7) キ+ スタブルコーテ
ィングを施した浸漬ランスを用いて501/分で2分の
^rバブリングを実施した。(2) After charging the if magnetic induction device 3.41, use metal manganese (99.9% Mn) and 0 kg of steel for component adjustment.
into the molten steel (20) 1) in chamber R1, and AhOs9
Bubbling was carried out for 2 minutes at 501/min using a immersion lance with a stable coating.
この操作後の湯をサンプリングして分析し成分を確認し
た。この間、精練に2分、成品確認に5分、合計7分を
要した。After this operation, the hot water was sampled and analyzed to confirm its components. During this time, a total of 7 minutes was required, including 2 minutes for scouring and 5 minutes for product confirmation.
同時に測温を行ったところ、溶鋼温度降下は10℃であ
ったが、最終的には鋳込みには問題なく、特に溶鋼加熱
は実施しなかった。When the temperature was measured at the same time, the temperature drop of the molten steel was 10°C, but ultimately there was no problem with casting, and no heating of the molten steel was performed.
(4)取鍋り、の鋳込みが終了したところで、注湯槽内
の湯面が低下しないように、注湯槽2の下の注湯ノズル
5のスライディングゲートを閉とし、鋳型内にキャステ
ィングブロックを装入した。所要時間は3分であった。(4) When the ladle is finished pouring, the sliding gate of the pouring nozzle 5 under the pouring tank 2 is closed to prevent the level of the molten metal in the pouring tank from dropping, and a casting block is installed in the mold. I entered. The time required was 3 minutes.
(5)次いで、受湯槽の開閉手段(1[誘導装置)3と
通路C1の開閉手段(1ft磁誘導装置)41を開放し
、タンデイツシュ内を均一混合するために′;4磁誘導
装置3および通路C+とCtの電磁誘導装置43.4、
の各々に70kw電荷し、150’、/分で溶鋼を右回
り (時計回り)に循環させた。2分で3循環が終了し
、成分は均一化して鋼Bとなっていた。(5) Next, the opening/closing means (1 [induction device) 3] of the receiving tank and the opening/closing means (1ft magnetic induction device) 41 of the passage C1 are opened to uniformly mix the inside of the tundish. electromagnetic induction device 43.4 for passages C+ and Ct;
A charge of 70 kW was applied to each of the tubes, and the molten steel was circulated clockwise at a rate of 150 minutes per minute. Three cycles were completed in 2 minutes, and the components were homogenized to become Steel B.
(6)そこで、受湯槽lおよび通路C1、C,の開閉手
段(電磁誘導装置)3.4い4.の電荷を解いて、注入
ノズル5のスライディングゲートを′開゛とし、同時に
予めクレーンで運んで来ておいた取鍋り、 (I[B
250’、収容)から受湯槽の室R1に給湯を開始して
鋳造を続けた。(6) Therefore, the opening/closing means (electromagnetic induction device) for the receiving tank l and the passages C1, C, 3.4 and 4. The charge on the injection nozzle 5 is released, and the sliding gate of the injection nozzle 5 is opened. At the same time, the ladle (I[B
250', housing), the supply of hot water to the chamber R1 of the hot water receiving tank was started, and casting was continued.
上記(1)〜(6)の間、注湯槽2の湯面は微小変動に
とどまり、はぼ一定のレベルに保たれた。従うて、鋳型
内へのスラグの流入は殆どな(、鋳造条件も一定に保た
れ、品質悪化のない鋳片が安定して得られた。During (1) to (6) above, the level of the molten metal in the pouring tank 2 remained at a constant level with only slight fluctuations. Therefore, almost no slag entered the mold (the casting conditions were also kept constant, and slabs with no quality deterioration were stably obtained).
(発明の効果)
以上、主に異鋼種の連連鋳を例にして説明したが、本発
明のタンデイツシュは同−鋼種の連連鋳においても、取
鍋交換時の継ぎ目の品質を落とさないという優れた効果
を発揮する。また、タンデイツシュ内における精錬も、
鋳造を継続しながら行うことができる。(Effects of the Invention) The explanation above has mainly been given using continuous casting of different steel types as an example, but the tundish of the present invention has an excellent property of not deteriorating the quality of the joint when changing the ladle even in continuous casting of the same steel type. be effective. In addition, refining within Tanditshu,
This can be done while casting continues.
本発明のタンデイツシュは、鋼の連続鋳造のみならず、
銅、アルミニウムその他多くの金属の連続鋳造に用いる
ことができ、品質のよい鋳片を歩留りよく製造できると
いう工業的に極めて有用なものである。The tandaitsu of the present invention is not limited to continuous casting of steel.
It can be used for continuous casting of copper, aluminum, and many other metals, and is extremely useful industrially because it can produce high-quality slabs at a high yield.
第1図は、本発明のタンデイツシュの概念を示す斜視略
図、
第2図は、本発明のタンデイツシュの詳細を示す平面模
式図、
第3図は、本発明の異鋼種連連鋳方法を説明する図で、
■〜■はその工程に対応する。Fig. 1 is a schematic perspective view showing the concept of the tundish of the present invention, Fig. 2 is a schematic plan view showing details of the tundish of the present invention, and Fig. 3 is a diagram illustrating the continuous casting method of different steel types of the present invention. in,
■~■correspond to the process.
Claims (2)
れぞれ開閉手段を備えた複数の通路で連結されているタ
ンディッシュであって、上記受湯槽はその槽を上記通路
と同数の室に仕切る開閉手段を備え、上記複数の通路は
受湯槽の上記同数の室からそれぞれ注湯槽に通じ、且つ
、上記通路の開閉手段と受湯槽の開閉手段の少なくとも
一つは電磁誘導装置であることを特徴とする連続鋳造用
タンデイツシュ。(1) A tundish that has an independent molten metal receiving tank and a molten pouring tank, and the two tanks are connected by a plurality of passages each having an opening/closing means, and the molten metal receiving tank has the same number of tanks as the passages. The plurality of passages each lead from the same number of chambers of the receiving tank to the pouring tank, and at least one of the opening/closing means for the passages and the opening/closing means for the receiving tank is an electromagnetic induction device. A tandate for continuous casting characterized by the following.
とする特許請求の範囲第1項記載のタンディッシュを用
いた異鋼種連続鋳造方法。 [1]受湯槽の2室(R_1、R_2)にそれぞれ別個
の取鍋(L_1、L_2)から鋼Aを給湯しつつ鋼Aを
連続鋳造する工程、 [2]一方の取鍋(L_1)からの鋼Aの給湯の末期に
受湯槽の開閉手段を閉じて受湯槽を仕切り、室R_1と
注入槽を連結する通路(C_1)を閉じ、室R_2への
給湯だけで鋼Aの連続鋳造を続ける工程、[3]室R_
2への鋼Aの給湯を継続しつつ、室R_1に残留する鋼
Aに合金鉄その他の添加剤を加えて成分調整を行う工程
、 [4]取鍋L_2から室R_2への鋼Aの給湯が終了し
た時点で受湯槽の開閉手段による仕切りを解除し、且つ
注湯槽から鋳型への注湯を遮断した状態で室R_1と注
入槽を連結する通路(C_2)を閉じ受湯槽の湯面を調
整する工程、 [5]通路C_1とC_2を開き、前記少なくとも一つ
の電磁誘導装置によって受湯槽および注湯槽の湯を循環
させて攪拌し、その間に鋳型内にキャスティングブロッ
クを装入し、かつ鋼Bを収容した取鍋L_3とL_4を
それぞれ室R_1とR_2の上に準備する工程、[6]
注湯槽から鋳型への注湯を再開して鋼Bの連続鋳造を行
う工程。(2) A continuous casting method of different steel types using a tundish according to claim 1, characterized in that the following steps [1] to [6] are repeated. [1] Process of continuously casting steel A while supplying hot water into two chambers (R_1, R_2) of the receiving tank from separate ladles (L_1, L_2), [2] From one ladle (L_1) At the end of hot water supply for Steel A, the opening/closing means of the hot water tank is closed to partition the hot water tank, the passage (C_1) connecting chamber R_1 and the pouring tank is closed, and continuous casting of Steel A is continued by only supplying hot water to chamber R_2. Process, [3] Room R_
[4] Supplying steel A from ladle L_2 to room R_2; [4] Supplying steel A from ladle L_2 to room R_2; When the process is completed, the partition by the opening/closing means of the molten metal receiving tank is released, and the passage (C_2) connecting the chamber R_1 and the pouring tank is closed with the molten metal pouring from the molten metal pouring tank to the mold blocked, and the molten metal level in the molten metal receiving tank is closed. [5] Opening the passages C_1 and C_2, circulating and stirring the hot water in the receiving tank and the pouring tank by the at least one electromagnetic induction device, during which time the casting block is inserted into the mold, and the steel a step of preparing ladles L_3 and L_4 containing B on chambers R_1 and R_2, respectively, [6]
The process of restarting pouring from the pouring tank into the mold and performing continuous casting of Steel B.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP32303988A JPH02169158A (en) | 1988-12-21 | 1988-12-21 | Tundish and continuous casting method using it |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP32303988A JPH02169158A (en) | 1988-12-21 | 1988-12-21 | Tundish and continuous casting method using it |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH02169158A true JPH02169158A (en) | 1990-06-29 |
Family
ID=18150427
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP32303988A Pending JPH02169158A (en) | 1988-12-21 | 1988-12-21 | Tundish and continuous casting method using it |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH02169158A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03128151A (en) * | 1989-10-16 | 1991-05-31 | Kawasaki Steel Corp | Apparatus for casting different kinds of cast slab and method for using this |
US5759757A (en) * | 1996-10-17 | 1998-06-02 | Eastman Kodak Company | Photographic elements containing development inhibitor releasing compounds |
JP2007513772A (en) * | 2003-12-11 | 2007-05-31 | ノベリス・インコーポレイテッド | Method and apparatus for starting and stopping horizontal casting machine |
-
1988
- 1988-12-21 JP JP32303988A patent/JPH02169158A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03128151A (en) * | 1989-10-16 | 1991-05-31 | Kawasaki Steel Corp | Apparatus for casting different kinds of cast slab and method for using this |
US5759757A (en) * | 1996-10-17 | 1998-06-02 | Eastman Kodak Company | Photographic elements containing development inhibitor releasing compounds |
US6043378A (en) * | 1996-10-17 | 2000-03-28 | Eastman Kodak Company | Photographic elements containing development inhibitor releasing compounds |
JP2007513772A (en) * | 2003-12-11 | 2007-05-31 | ノベリス・インコーポレイテッド | Method and apparatus for starting and stopping horizontal casting machine |
JP2010179372A (en) * | 2003-12-11 | 2010-08-19 | Novelis Inc | Method and apparatus for starting and stopping horizontal casting machine |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN107338390B (en) | A kind of Ductile iron bar and preparation method thereof improving the number of graphite using SiC | |
JP2019501027A (en) | Melt injection device, casting equipment and casting method using the same | |
CN108405821A (en) | The casting device and method of the big specification magnesium alloy slab ingot of flawless | |
JP6855806B2 (en) | Continuous casting method and continuous casting equipment for multi-layer slabs | |
CN101664801A (en) | Method and device for low overheat composite casting aluminum alloy under action of steady magnetic field | |
JPH02169158A (en) | Tundish and continuous casting method using it | |
CN107447160A (en) | Reduce the smelting process of the residual vanadium of ferrovanadium slag | |
JP3395706B2 (en) | Continuous casting method | |
CN107354368A (en) | The smelting process of efficient smelting ferrovanadium | |
JPH09239501A (en) | Method for refining molten steel in tundish | |
JPS63149055A (en) | Refining method for molten steel in tundish for continuous casting | |
CN108380835A (en) | The low segregation air valve steel continuous casting billet of one kind and its manufacturing method | |
CN107354367A (en) | Shorten the smelting process of the vanadium iron duration of heat | |
JPS594954A (en) | Method and device for casting steel containing lead | |
JP2000334548A (en) | Continuous casting method with continuous continuous casting of mixture of molten steels in same tundish | |
CN116024485B (en) | Preparation method of high-aluminum steel and high-aluminum steel | |
US20230234123A1 (en) | Plant to produce steel, and corresponding method | |
JPS6050129A (en) | Production of metallic alloy by thermit method | |
JPH079088A (en) | Production of cast billet by continuous casting equipment for producing small lot | |
CN113265579A (en) | Inoculation treatment method of cast iron | |
RU2024620C1 (en) | Method for melting cast iron in cupola with two rows of tuyeres | |
JPS58157557A (en) | Continuous casting method of dissimilar kinds of steel | |
JPS59225857A (en) | Continuous casting method of different kinds of steel | |
CN117448662A (en) | Non-magnetic steel ZYNM7 smelting and continuous casting production process | |
CN118455473A (en) | Method for online regulating and controlling composition of casting powder in continuous casting crystallizer |