JPS63180361A - Method for producing steel ingot having high quality - Google Patents
Method for producing steel ingot having high qualityInfo
- Publication number
- JPS63180361A JPS63180361A JP1298087A JP1298087A JPS63180361A JP S63180361 A JPS63180361 A JP S63180361A JP 1298087 A JP1298087 A JP 1298087A JP 1298087 A JP1298087 A JP 1298087A JP S63180361 A JPS63180361 A JP S63180361A
- Authority
- JP
- Japan
- Prior art keywords
- slag
- frame
- molten steel
- molten
- feeder head
- 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
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 81
- 239000010959 steel Substances 0.000 title claims abstract description 81
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 239000002893 slag Substances 0.000 claims abstract description 85
- 238000000034 method Methods 0.000 claims abstract description 20
- 238000005266 casting Methods 0.000 claims abstract description 7
- 239000012530 fluid Substances 0.000 claims description 5
- 239000011810 insulating material Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000007711 solidification Methods 0.000 abstract description 7
- 230000008023 solidification Effects 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 4
- 238000002844 melting Methods 0.000 abstract description 3
- 230000008018 melting Effects 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 239000003795 chemical substances by application Substances 0.000 abstract 2
- 238000003780 insertion Methods 0.000 abstract 1
- 230000037431 insertion Effects 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 230000008602 contraction Effects 0.000 description 4
- 238000007654 immersion Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000005204 segregation Methods 0.000 description 4
- 239000011819 refractory material Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005303 weighing 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〕
本発明は高品質鋼塊の製造方法に係り、特に表面が美麗
でかつ内質が健全な高品質鋼塊の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for producing a high quality steel ingot, and particularly to a method for producing a high quality steel ingot with a beautiful surface and a sound internal quality.
凝固収縮に伴なう鋼塊の欠陥を防止するために、鋼塊頭
部に押湯を付けろことが一般的に行われ、押湯の保温法
には各種の工夫がなされている。中でも押湯内溶鋼面の
上に溶融スラグを装入し、その溶融スラグ内に電極を浸
漬して電極と溶鋼の間、あるいは複数の電極間に電流を
流し、スラグの抵抗発熱を利用して押湯内溶鋼を加熱す
る方法はすでに公知であり、エレクトロスラグホットト
ップ法（以下ＥＳＨＴ法と称する）と呼ばれている。In order to prevent defects in steel ingots due to solidification and shrinkage, it is common practice to attach a feeder to the head of the steel ingot, and various methods have been devised to keep the feeder warm. Among these methods, molten slag is charged onto the surface of the molten steel in the riser, an electrode is immersed in the molten slag, and a current is passed between the electrode and the molten steel or between multiple electrodes, making use of the resistance heat generation of the slag. A method of heating molten steel in a feeder is already known and is called the electroslag hot top method (hereinafter referred to as ESHT method).
Ｅ Ｓ ＨＴ法の代表技術とされているＢＥＳＴ法はオ
ーストリアＶＥＷ社で開発され特公昭４７−３９８１７
等に開示されている。その概要は第２図に示す如く、定
盤２上に鋳型４が載置され、その上に液体によって冷却
された押湯枠６が乗っている。溶鋼８の一部は凝固殻１
０を形成し、押湯枠６の中に溶融スラグ１２が装入され
、その外側は凝固スラグ１４となっている。溶融スラグ
１２には消耗性電極１６が浸漬され電源１８に接続して
いる。また、直流電流の重畳により特殊な冶金反応を付
加する場合には補助電極２０が設けられる。The BEST method, which is considered to be a representative technology of the E S HT method, was developed by VEW in Austria and published in the Japanese Patent Publication No. 47-39817.
etc. are disclosed. As shown in FIG. 2, a mold 4 is placed on a surface plate 2, and a riser frame 6 cooled by liquid is placed on top of the mold 4. A part of the molten steel 8 is a solidified shell 1
0 is formed, and molten slag 12 is charged into the riser frame 6, and the outside thereof is solidified slag 14. A consumable electrode 16 is immersed in the molten slag 12 and connected to a power source 18 . Further, when adding a special metallurgical reaction by superimposing direct current, an auxiliary electrode 20 is provided.
上記装置によれば切り捨てられる押湯の量をできるだけ
少なく抑え、かっ鋼塊内での収縮孔の発生を避けられる
ばかりか、鋼塊底部の負偏析、頭部の正偏析および介在
物の改善が可能である。The above device not only suppresses the amount of feeder that is discarded as much as possible and avoids the generation of shrinkage holes in the steel ingot, but also improves negative segregation at the bottom of the steel ingot, positive segregation at the head, and inclusions. It is possible.
しかしながら、この方法は溶鋼８の凝固進行に伴い凝固
殻１０と鋳型４０間に空隙を生じ、この空隙に溶融スラ
グ１２近傍の凝固殻１０が再溶解されるにつれ、溶融ス
ラグ１２および溶鋼８が流入し、溶融スラグ量が不足す
るという問題を生じやすいほか、鋼塊鋳肌を損ない電極
材の一部が空隙に流出し歩留を低下させる欠点がある。However, in this method, a gap is created between the solidified shell 10 and the mold 40 as the molten steel 8 solidifies, and as the solidified shell 10 near the molten slag 12 is remelted, the molten slag 12 and the molten steel 8 flow into this gap. However, in addition to the problem that the amount of molten slag tends to be insufficient, there is a drawback that the cast surface of the steel ingot is damaged and a part of the electrode material flows into the voids, reducing the yield.
また電極１６で得られた熱量の一部が、水冷の押湯枠６
で抜熱されエネルギーの損失が多い。In addition, a part of the heat obtained from the electrode 16 is transferred to the water-cooled feeder frame 6.
Heat is removed and a lot of energy is lost.
上記の鋳型と凝固殻との間に形成される空隙に溶鋼、溶
融スラグ等が侵入する問題を解決する方法として第３〜
５図で図示される特開昭５３−７３４２５が提案されて
いる。第３図で溶鋼８の縁部と押湯枠６の冷却内壁間の
接触域においてはＡ地点からＢ地点までが強力に冷却さ
れろ。溶鋼凝固殻が収縮するとＡＢ間の冷却された溶鋼
凝固殻はＡ’Ｂ’に移動する。スラグはこの収縮により
形成された環状隙間に入るが、隙間の入口で固化され、
更に進入しようとするスラグに対してシール栓２２を形
成する。スラグ浴の高さは、このシール栓２２の形成に
より影響を受けないので、ジュール熱を形成するための
電熱状態は変化しない。それ故に必要なエネルギーの供
給だけでなく、それに依存する冶金学的効果は長い時間
にわたり一定に維持される。The third to
JP-A-53-73425 illustrated in FIG. 5 has been proposed. In FIG. 3, in the contact area between the edge of the molten steel 8 and the cooling inner wall of the feeder frame 6, the area from point A to point B is strongly cooled. When the molten steel solidified shell contracts, the cooled molten steel solidified shell between AB moves to A'B'. The slag enters the annular gap formed by this contraction, but solidifies at the entrance of the gap,
Further, a seal plug 22 is formed against the slag that is about to enter. Since the height of the slag bath is not affected by the formation of this sealing plug 22, the electrical heating conditions for generating Joule heat do not change. Therefore, not only the necessary energy supply, but also the metallurgical effect depending on it, remains constant over a long period of time.
次に、第４図は溶鋼８を鋳型４より上まで注がない場合
の実施例で、突出部２４が溶ｗ４凝固殻の収縮を妨げな
いよう、円錐面２６には垂直線に対して角度αを設けて
いるが、凝固収縮時には前記と同様ＡＣ〜Ａ’ Ｃ’間
にスラグのシール栓２２が形成される。また、第５図は
金属構造物２８に耐火物３０が付けられた押湯枠が使用
され、金属構造物２８の熱吸収により冷却して同様のこ
とを行う方法である。Next, Fig. 4 shows an example in which the molten steel 8 is not poured above the mold 4, and the conical surface 26 has an angle with respect to the vertical line so that the protrusion 24 does not interfere with the contraction of the solidified shell of the molten steel 4. α is provided, but during solidification and contraction, a seal plug 22 of slag is formed between AC and A'C' as described above. Further, FIG. 5 shows a method in which a feeder frame in which a refractory material 30 is attached to a metal structure 28 is used, and the same effect is achieved by cooling the metal structure 28 by heat absorption.
しかし、これらの方法は溶鋼の上部を冷却して凝固殻を
生成し、スラグと溶鋼が鋳型と凝固殻の隙間に流入する
のを防止するのであって、エネルギー効率的には損失の
多い方法である。However, these methods cool the upper part of the molten steel to form a solidified shell and prevent slag and molten steel from flowing into the gap between the mold and the solidified shell, which is an energy-efficient method with high losses. be.
本発明の目的は、上記従来技術の問題点を解決し、エネ
ルギーの損失を伴わず溶融スラグ、溶鋼が鋳型と凝固殻
の間隙に流入するのを防止できる高品質鋼塊の製造方法
を提供するにある。An object of the present invention is to solve the above-mentioned problems of the prior art and provide a method for manufacturing high-quality steel ingots that can prevent molten slag and molten steel from flowing into the gap between the mold and the solidified shell without causing energy loss. It is in.
ｃ問題点を解決するための手段および作用〕本発明の要
旨とするところは次の如くである。c. Means and operation for solving the problems] The gist of the present invention is as follows.
すなわち、鋳型および押湯枠内に溶鋼を注入し、前記押
湯枠内の溶鋼面上に溶融スラグを装入し、前記溶融スラ
グにエネルギーを供給して前記押湯枠内の溶鋼を加熱保
温する高品質鋼塊の製造方法において、前記押湯枠内に
下端が前記溶鋼に浸漬する昇降自在のスラグ枠を配置し
、前記スラグ枠内の溶鋼面上に溶融スラグを保持し、前
記押湯枠とスラグ枠の間隙に保温材を充填し、前記スラ
グ枠の内側および下端に接する前記溶鋼を鋳造時間の大
部分において流動状態に保持すると共に前記溶鋼および
溶融スラグが前記鋳型と鋳型に接する凝固殻との間に形
成される間隙に流入するのを防止することを特徴とする
高品質鋼塊の製造方法である。That is, molten steel is injected into a mold and a feeder frame, molten slag is charged onto the surface of the molten steel in the feeder frame, and energy is supplied to the molten slag to heat and keep the molten steel in the feeder frame warm. In the method for producing high-quality steel ingots, a slag frame that can be raised and lowered, the lower end of which is immersed in the molten steel, is arranged in the feeder frame, molten slag is held on the molten steel surface in the slag frame, and the feeder A heat insulating material is filled in the gap between the frame and the slag frame, and the molten steel in contact with the inner side and lower end of the slag frame is maintained in a fluid state for most of the casting time, and the molten steel and molten slag are solidified in contact with the mold and the mold. This is a method for producing a high-quality steel ingot, characterized by preventing the ingot from flowing into the gap formed between the steel ingot and the shell.
本発明の詳細を第１図により説明する。従来例′の第２
図において説明した事項は重複するので説明を省略する
が、押湯枠６内に下端が溶鋼８に浸漬するスラグ枠３２
が設けられている。スラグ枠３２は適当な深さで溶鋼８
内に浸漬するため、浮遊する浮子式か、もしくはスライ
ド式の可動方式とし昇降自在である。スラグ枠３２の溶
鋼内浸漬深さの最小値Ｈは、溶融スラグ厚み：２００ｍ
ｍ、溶鋼比重ニア０、溶融スラグ比重：２，５とすれば
下記式で計算できる。The details of the present invention will be explained with reference to FIG. Conventional example '2nd
Since the details explained in the figures are redundant, the explanation will be omitted, but a slag frame 32 whose lower end is immersed in the molten steel 8 in the feeder frame 6
is provided. The slag frame 32 is made of molten steel 8 at an appropriate depth.
In order to be immersed in the water, it is either a floating float type or a sliding type that can be moved up and down. The minimum value H of the immersion depth of the slag frame 32 in the molten steel is molten slag thickness: 200 m.
m, molten steel specific gravity: 0, and molten slag specific gravity: 2.5, it can be calculated using the following formula.
従って注入時の連動エネルギーを考慮して溶融スラグの
流出を防止するためには、スラグ枠３２の溶鋼８に対す
る浸漬深さは８０間以上が必要である。また、スラグ枠
３２は押湯枠６より小径であり、溶融スラグ１２を収容
するための十分な内容積を有し、スラグ枠３２の材質は
耐火物あるいは水冷金属等の複合材質であって溶ｎ４８
、溶融スラグ１２からの熱ショックや溶損に十分耐える
必要がある。Therefore, in order to prevent the molten slag from flowing out considering the interlocking energy during injection, the immersion depth of the slag frame 32 into the molten steel 8 must be 80 mm or more. The slag frame 32 has a smaller diameter than the riser frame 6 and has a sufficient internal volume to accommodate the molten slag 12, and the material of the slag frame 32 is a composite material such as refractory or water-cooled metal. n48
, it is necessary to sufficiently withstand thermal shock and melting damage from the molten slag 12.
押湯枠６とスラグ枠３２の間隙には保温材３４が充填さ
れている。保温材３４の化学組成は、重量比で５ｉ０２
：８〜１５％、Ａｔ２０３７２５〜３５％、金属Ａ Ｉ
・１９〜２３％、Ｆ ｅ２０．＋ Ｆ ｅＯ：１２〜
１６％、全炭素： ６〜１０％等が好ましい。A heat insulating material 34 is filled in the gap between the riser frame 6 and the slag frame 32. The chemical composition of the heat insulating material 34 is 5i02 by weight.
:8~15%, At203725~35%, Metal AI
・19-23%, Fe20. + FeO: 12~
16%, total carbon: 6 to 10%, etc. are preferable.
本発明のスラグ枠３２は鋼塊の凝固体積収縮に伴う溶鋼
表面の位置変動あるいは電極１６の溶解によって生ずる
溶鋼表面の位置変動にも追随して昇降し、溶鋼８および
溶融スラグ１２が鋳型４と凝固殻１０との間に形成され
ろ間隙３６に流入するのを防止すると共に、スラグ枠３
２の内側および下端に接する溶＃ｌＩ８を鋳造時間の大
部分において流動状態１こ保持することによって鋼塊内
部欠陥の発生を防止することができる。The slag frame 32 of the present invention moves up and down following the positional change of the molten steel surface caused by the solidification volume contraction of the steel ingot or the positional change of the molten steel surface caused by the melting of the electrode 16, and the molten steel 8 and molten slag 12 are moved into the mold 4. This prevents the slag from flowing into the gap 36 formed between the solidified shell 10 and the slag frame 3.
The occurrence of internal defects in the steel ingot can be prevented by maintaining the melt #lI8 in contact with the inner side and lower end of the steel ingot in a fluid state for most of the casting time.
第１図に示す装置で本発明法により８１ｔの鋼塊を製造
した。ＥＳＨＴの処理前の溶鋼および電極の成分を第１
表に示した。EXAMPLE 1 A steel ingot weighing 81 tons was manufactured by the method of the present invention using the apparatus shown in FIG. The composition of the molten steel and electrode before ESHT treatment is
Shown in the table.
第１表
平均直径２３６９ｍの鋳型内に７５ｔの母溶鋼を下注鋳
造し、その上のスラグ枠内に１４９０℃の溶融スラグを
２００關厚に添加し、２９５ｍｍＸ４２０ｍの断面積を
有する６ｔの電極により印加電力３００〜１２００ＫＷ
でＥＳＨＴ処理を行った。Table 1: 75 tons of mother molten steel was precast into a mold with an average diameter of 2369 m, molten slag at 1490°C was added to a thickness of 200 mm in the slag frame above it, and a 6 tons electrode with a cross-sectional area of 295 mm x 420 m was used. Applied power 300~1200KW
ESHT processing was performed.
本実施例で使用したスラグ枠は分割構造で要所に鋼製金
枠を用い耐火物でライニングし、スラグ枠の溶鋼内浸漬
深さが１２０ｎｗａとなる如く浮力を考慮して構成し、
溶鋼表面レベルの変動および溶融スラグの流動に伴って
スラグ枠と押湯枠との位置関係が変動しないように円周
上に４個所のガイドを設けて、スラグ枠と押湯枠との間
隔が１００Ｍになる如くスラグ枠を昇降自在に保持した
。またスラグ枠の外周部の溶鋼表面は保温材で２００關
厚さに被覆した。The slag frame used in this example has a split structure, uses steel metal frames at key points, is lined with refractories, and is constructed in consideration of buoyancy so that the immersion depth of the slag frame in molten steel is 120 nwa.
In order to prevent the positional relationship between the slag frame and feeder frame from changing due to changes in the molten steel surface level and the flow of molten slag, guides are provided at four locations on the circumference, and the interval between the slag frame and feeder frame is adjusted. The slag frame was held so that it could be raised and lowered to a length of 100M. The surface of the molten steel on the outer periphery of the slag frame was coated with a heat insulating material to a thickness of 200 mm.
ＥＳＨＴ処理中、スラグ枠の作用によりスラグ枠の内側
および下端に接する溶鋼を鋳造時間の大部分において流
動状態に保持すると共に溶鋼および溶融スラグが鋳型と
凝固殻との間の間隙に流入するのを防止することができ
た。During the ESHT process, the action of the slag frame keeps the molten steel in contact with the inner and lower edges of the slag frame in a fluid state for most of the casting time, and prevents the molten steel and molten slag from flowing into the gap between the mold and the solidified shell. could be prevented.
ＥＳＨＴ処理完了後、電力印加停止と共にスラグ枠の溶
鋼内浸漬深さを８０ｍとした。After the ESHT treatment was completed, power application was stopped and the immersion depth of the slag frame in the molten steel was set to 80 m.
溶鋼および溶融スラグの凝固後、スラグ枠は凝固スラグ
と共に回収した。スラグ枠は周方向に４分割構造である
ので２００關厚の円盤状スラグは容易に回収が可能で、
回収後粉砕して再利用した。After the molten steel and molten slag solidified, the slag frame was recovered together with the solidified slag. Since the slag frame is divided into four parts in the circumferential direction, 200 mm thick disc-shaped slag can be easily collected.
After collection, it was crushed and reused.
本実施例で使用したスラグ枠はスラグと接触した部分は
耐火物が１ ｍ ／ Ｈｒの速度で損耗を受けたが補修
して再利用できた。In the slag frame used in this example, the refractory material in the part that came into contact with the slag was damaged at a rate of 1 m/hr, but it could be repaired and reused.
型抜後の鋼塊は頭部にスラグ枠が浸漬していた深さ８０
閣のリング状の凹部が残っているが、その他は平坦で表
面に溶融スラグ、溶鋼の流入がなく美麗であった。鋼塊
を切断して内部形状を確認したところ、ざく性欠陥、Ｖ
偏析、逆Ｖ偏析等は無く健全であった。The steel ingot after die cutting has a depth of 80 mm where the slag frame was immersed in the head.
Although the ring-shaped recess of the temple remains, the rest of the surface was flat and beautiful, with no molten slag or molten steel flowing into the surface. When we cut the steel ingot and checked its internal shape, we found that it had cracking defects, V
It was healthy with no segregation or inverted V segregation.
本発明は上記実施例からも明らかな如く、押湯枠内に下
端が溶鋼に浸漬する昇降自在のスラグ枠を設け、スラグ
枠内の溶融スラグにエネルギーを供給することによって
次の効果を挙げることができた。As is clear from the above embodiments, the present invention provides the following effects by providing a slag frame whose lower end is immersed in molten steel and which can be raised and lowered within the riser frame and supplying energy to the molten slag within the slag frame. was completed.
（イ） 鋳造時間の大部分において押湯枠内の溶鋼を流
動状態で保持し、鋼塊凝固過程の成分のばらつきおよび
凝固収縮孔の発生を防止し健全な鋼塊を得ることができ
た。(a) The molten steel in the riser frame was maintained in a fluid state for most of the casting time, preventing variations in the components during the solidification process of the steel ingot and the occurrence of solidification shrinkage holes, thereby making it possible to obtain a sound steel ingot.
（ロ） 鋳型と凝固殻との間隙に溶鋼および溶融スラグ
の流入するのを防止し表面形状のすぐれた鋼塊を得るこ
とができた。(b) It was possible to prevent molten steel and molten slag from flowing into the gap between the mold and the solidified shell, and to obtain a steel ingot with an excellent surface shape.
（ハ） 前記（ロ）の間隙への溶鋼および溶融スラグの
流入防止において、従来の冷却した凝固殻を利用する方
法に比較してエネルギーの損失が少なかった。(c) In preventing the inflow of molten steel and molten slag into the gap in the above (b), the loss of energy was lower than in the conventional method of utilizing a cooled solidified shell.
第１図は本発明実施例の製造装置の断面図、第２図は従
来のＢＥＳＴ法を示す製造装置の断面図、第３図、第４
図および第５図はいずれも従来の押湯法を示す製造装置
の断面図である。FIG. 1 is a cross-sectional view of a manufacturing apparatus according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of a manufacturing apparatus showing the conventional BEST method, and FIGS.
Both FIG. 5 and FIG. 5 are cross-sectional views of manufacturing equipment showing a conventional feeder method.
Claims (1)
内の溶鋼面上に溶融スラグを装入し、前記溶融スラグに
エネルギーを供給して前記押湯枠内の溶鋼を加熱保温す
る高品質鋼塊の製造方法において、前記押湯枠内に下端
が前記溶鋼に浸漬する昇降自在のスラグ枠を配置し、前
記スラグ枠内の溶鋼面上に溶融スラグを保持し、前記押
湯枠とスラグ枠の間隙に保温材を充填し、前記スラグ枠
の内側および下端に接する前記溶鋼を鋳造時間の大部分
において流動状態に保持すると共に前記溶鋼および溶融
スラグが前記鋳型と鋳型に接する凝固殻との間に形成さ
れる間隙に流入するのを防止することを特徴とする高品
質鋼塊の製造方法。(1) Molten steel is injected into the mold and feeder frame, molten slag is charged onto the molten steel surface in the feeder frame, and energy is supplied to the molten slag to heat the molten steel in the feeder frame. In the method for manufacturing a high-quality steel ingot that retains heat, a slag frame that can be raised and lowered with its lower end immersed in the molten steel is arranged in the riser frame, the molten slag is held on the molten steel surface in the slag frame, and the slag frame is The gap between the hot water frame and the slag frame is filled with a heat insulating material, and the molten steel in contact with the inner side and lower end of the slag frame is maintained in a fluid state for most of the casting time, and the molten steel and molten slag are in contact with the mold and the casting mold. A method for producing a high-quality steel ingot, characterized by preventing the ingot from flowing into a gap formed between the solidified shell and the solidified shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62012980A JPH0622745B2 (en) | 1987-01-22 | 1987-01-22 | High quality ingot manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62012980A JPH0622745B2 (en) | 1987-01-22 | 1987-01-22 | High quality ingot manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63180361A true JPS63180361A (en) | 1988-07-25 |
| JPH0622745B2 JPH0622745B2 (en) | 1994-03-30 |
Family
ID=11820362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62012980A Expired - Lifetime JPH0622745B2 (en) | 1987-01-22 | 1987-01-22 | High quality ingot manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0622745B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112756565A (en) * | 2020-12-22 | 2021-05-07 | 丹阳市曙光镍材有限公司 | Feeding device and feeding method for nickel alloy ingot |
| CN116159972A (en) * | 2023-03-03 | 2023-05-26 | 安徽林洪重工科技有限公司 | Cap heat preservation device, steel ingot casting system and steel ingot casting method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6320152A (en) * | 1986-07-15 | 1988-01-27 | Kawasaki Steel Corp | Method and apparatus for producing ingot |
-
1987
- 1987-01-22 JP JP62012980A patent/JPH0622745B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6320152A (en) * | 1986-07-15 | 1988-01-27 | Kawasaki Steel Corp | Method and apparatus for producing ingot |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112756565A (en) * | 2020-12-22 | 2021-05-07 | 丹阳市曙光镍材有限公司 | Feeding device and feeding method for nickel alloy ingot |
| CN112756565B (en) * | 2020-12-22 | 2022-04-15 | 丹阳市曙光镍材有限公司 | Feeding device and feeding method for nickel alloy ingot |
| CN116159972A (en) * | 2023-03-03 | 2023-05-26 | 安徽林洪重工科技有限公司 | Cap heat preservation device, steel ingot casting system and steel ingot casting method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0622745B2 (en) | 1994-03-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3670089A (en) | Apparatus for electroslag remelting of metals with molten slag introduction | |
| CN204474735U (en) | A kind of anti-sparking crystallizer | |
| US3610320A (en) | Unit for manufacturing hollow metal ingots | |
| US4284123A (en) | Arrangement for producing ingots of unalloyed and alloyed steels | |
| US4055215A (en) | Hot-top for the production of ingots using an electroslag remelting process | |
| US3608618A (en) | Electroslag ingot production | |
| JPS63180361A (en) | Method for producing steel ingot having high quality | |
| JPH06263B2 (en) | Continuous casting method | |
| JPH01113164A (en) | Method and apparatus for producting unidirectionally solidified ingot | |
| JPS6150065B2 (en) | ||
| JP4113967B2 (en) | Metal ingot casting apparatus and casting method | |
| CN212426143U (en) | Electroslag remelting device | |
| US3945818A (en) | Method for electroslag remelting with slag introduction and current circuit | |
| JPH0452067A (en) | Production of cast ingot | |
| JPS5921454A (en) | Tundish for continuous casting | |
| US3736124A (en) | Method for electroslag remelting of metals with slag introduction | |
| US3687189A (en) | Method of the electroslag remelting of consumable electrodes | |
| JPH0451263B2 (en) | ||
| US3876417A (en) | Slag introduction method for electroslag remelting of metals | |
| JPS6340664A (en) | Water cooled casting mold for melting and refining of metal | |
| JPS6320152A (en) | Method and apparatus for producing ingot | |
| KR810000573B1 (en) | Method of producing ingots of unalloyed and alloyed steels | |
| US3908736A (en) | Methods of producing large steel ingots | |
| US3667719A (en) | Arrangement for the bottom pouring of slag into a chill mould | |
| US3794104A (en) | Mould for electroslag remelting furnace |