JPS60191641A - Horizontal and continuous casting method of metal - Google Patents
Horizontal and continuous casting method of metalInfo
- Publication number
- JPS60191641A JPS60191641A JP4711284A JP4711284A JPS60191641A JP S60191641 A JPS60191641 A JP S60191641A JP 4711284 A JP4711284 A JP 4711284A JP 4711284 A JP4711284 A JP 4711284A JP S60191641 A JPS60191641 A JP S60191641A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- molten metal
- ingot
- continuous casting
- 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
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
- B22D11/04—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds
- B22D11/045—Continuous casting of metals, i.e. casting in indefinite lengths into open-ended moulds for horizontal casting
-
- 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
- B22D11/16—Controlling or regulating processes or operations
- B22D11/22—Controlling or regulating processes or operations for cooling cast stock or mould
-
- 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
- B22D11/16—Controlling or regulating processes or operations
- B22D11/22—Controlling or regulating processes or operations for cooling cast stock or mould
- B22D11/225—Controlling or regulating processes or operations for cooling cast stock or mould for secondary cooling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Continuous Casting (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、＠型上面の一部又は全部を開放し、た貫通す
る加熱鋳型の一方より溶融全屈を供給し、他方よシ鋳塊
を引出す金属の水平連続鋳造法に関する、
従来、水平連続鋳造法は１貫通した中央孔を有する冷却
鋳型を用いて鋳型の一方より溶帳合属を供給し鋳型内で
溶融金篇を凝固させ、他端より鋳塊を水平方向に連続的
に引き出す方法であ゛す、装置の小型化が図れるため鉄
及び非鉄台ｂ３の製造に広く使用されている。この方法
では。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to horizontal continuous casting of metal in which a part or all of the upper surface of the mold is opened, a full melting force is supplied from one side of the heating mold passing through the mold, and an ingot is pulled out from the other side. Conventionally, the horizontal continuous casting method uses a cooling mold with a central hole through which the molten metal is supplied from one side of the mold, solidifies the molten metal in the mold, and then pours the ingot horizontally from the other end. This is a method of continuously drawing out metals, and it is widely used for manufacturing ferrous and non-ferrous pedestals b3 because the device can be made smaller. in this way.
注入された溶融金属は鋳型内で急速に冷却され冷却鋳型
との接触部で凝固が開始するが内部は未凝固のままであ
る。この未凝固部は、凝固殻に保持されて朽ハ１！から
引き出され、二次冷却を受け、さらにローラ等により搬
出されていく間に完全に凝固する、
以上のような従来の連続釣造方法では、鋳塊の外側より
凝固が開始され、最後に中心部が凝固するため、凝固組
織が鋳造方向に対して直角方向の樹枝状晶（デンドライ
ト）が形成される。The injected molten metal is rapidly cooled within the mold and begins to solidify at the contact area with the cooled mold, but the inside remains unsolidified. This unsolidified part is retained by the solidified shell and becomes rotten! In the conventional continuous casting method described above, solidification begins from the outside of the ingot, and finally the center As the part solidifies, dendrites whose solidified structure is perpendicular to the casting direction are formed.
また、不純物等が中心部に濃縮され、成分偏析を生じ、
さらに中心部にブローポール等の欠陥を生じる、
このため鋳型内又は鋳塊引き出し工程において電磁攪拌
などを用いてデンドライトを破壊し。In addition, impurities etc. are concentrated in the center, causing component segregation,
In addition, defects such as blowholes occur in the center, so the dendrites are destroyed using electromagnetic stirring in the mold or during the ingot drawing process.
成分の均一化を計ることがなされているが十分でない、
、まを、鋳造金槁と鋳型の付着や湯もれを防止するため
鋳塊の間欠引き出しが行われているが、これによって形
成されるオシレーションマークは亀裂発生の原因ともな
り、又、鋳塊表面は鋳型との摩擦によって表面欠陥が生
じ易くなり、傷取りゃ面削り等の表面手入れが必要とな
る、
このため、このような従来の冷却鋳型を用いず、溶融金
属を内部から凝固させ、かつ鋳型の出口付近で鋳塊の表
面層が形成されるように鋳型を鋳造全域の凝固温度以上
に加熱することが提案されている。この方法では、鋳塊
の内部と外部がほぼ同時的に進行するため偏析等の内部
欠陥が減少し、鋳造方向への一方向凝固組織のものも得
られ、また表面状態が極めて滑らがとなる。さらに鋳型
の振動や鋳塊の間欠引き出しの必要もないのでオシレー
ションマークモ形成されないという極めて優れた特性を
有する、前記のように一方向凝固組織をもっ鋳塊は。Efforts have been made to homogenize the ingredients, but it is not sufficient.
In order to prevent the casting metal from sticking to the mold and from leaking, the ingot is withdrawn intermittently, but the oscillation marks formed by this can cause cracks, and Surface defects are likely to occur on the surface of the lump due to friction with the mold, and surface care such as removing scratches and shaving the surface is required. It has also been proposed to heat the mold above the solidification temperature of the entire casting area so that a surface layer of the ingot is formed near the exit of the mold. In this method, the inside and outside of the ingot progress almost simultaneously, so internal defects such as segregation are reduced, a unidirectional solidification structure in the casting direction can be obtained, and the surface condition is extremely smooth. . Furthermore, since there is no need for vibration of the mold or intermittent withdrawal of the ingot, the ingot with the unidirectional solidification structure as described above has an extremely excellent property of not forming oscillation marks.
圧延等の加工性に富むので難加工性の材料には好適であ
る。It is suitable for materials that are difficult to process because it has excellent workability such as rolling.
しかしながら、このように鋳型を加熱する連続鋳造法は
上記のよう峠多くの利点を有するけれども、鋳塊が鋳型
の出口近傍で表面層が形成されるために、鋳型に供給さ
れる溶湯の温度や圧力、加熱鋳型の温度分布、引抜き速
変、鋳塊の冷却能等の変化によって凝固開始の位置（凝
固界面）が変動し、場合によっては鋳型出口端で湯もれ
を生じたシ、鋳塊が破断することがある。However, although the continuous casting method in which the mold is heated in this way has many advantages as mentioned above, since a surface layer is formed on the ingot near the exit of the mold, the temperature of the molten metal supplied to the mold The solidification start position (solidification interface) fluctuates due to changes in pressure, temperature distribution of the heated mold, changes in drawing speed, cooling capacity of the ingot, etc., and in some cases, leakage may occur at the mold outlet end. may break.
特に鋳塊が大型化したり、複雑な断面形状の鋳塊を製造
しようとする場合には、その異常発生の危険が高まる。In particular, when an ingot becomes large or an ingot with a complicated cross-sectional shape is manufactured, the risk of abnormalities occurring increases.
し、たがって、上記の鋳型内における鋳塊の凝固開始位
債を常に検知し、定常的かつスムーズな鋳造を行うと同
時に、異常発生を事前に察知することは操業上極めて重
要なことである。Therefore, it is extremely important for operation to constantly detect the start of solidification of the ingot in the mold, perform steady and smooth casting, and at the same time detect abnormalities in advance. .
本発明は、この点に鑑みてなされたもので。The present invention has been made in view of this point.
鋳型上面、の一部又は全部を開放した貫通する加熱鋳型
の一方より溶融金属を供給し、他方よシ鋳塊を引出す金
属の水平連続鋳造法において。In a horizontal continuous casting method for metal, in which molten metal is supplied from one side of a heated mold that is partially or completely open and the upper surface of the mold is opened, and an ingot is drawn from the other side.
前記鋳型開放部における溶湯の温度分布又は前記鋳型の
温度分布を検知して鋳造金属の凝固界面の位置を制御す
る金属の水平連続鋳造法、並びに前記溶湯の温度分布な
溶湯から放射される赤外線量を測定して検知し、又、鋳
型の温度分布を複数の熱伝対を用いて検知する前記水平
連続鋳造法に関する。A horizontal continuous metal casting method in which the temperature distribution of the molten metal in the open part of the mold or the temperature distribution of the mold is detected to control the position of the solidification interface of the cast metal, and the amount of infrared rays emitted from the molten metal according to the temperature distribution of the molten metal. The present invention relates to the horizontal continuous casting method, in which the temperature distribution of the mold is measured and detected, and the temperature distribution of the mold is detected using a plurality of thermocouples.
これによって、凝固界面の位置が変動した場合には、引
抜き速度、鋳塊の冷却能、溶湯の温度、鋳型の加熱温度
などを調節して、自動的かつ定常的に連続鋳造すること
が可能となシ、まえ異常事態が発生しても、それを事前
に察知すスとシ端けさス＋／＠？今ヂ１１占冬右今スー
次に図面に沿って説明する。第１図は、開放鋳型を加熱
して鋳型出口付近で凝固が開始するようにした水平連続
鋳造装置および凝固界面を常に検知するための赤外線量
測定器等の非接触温度センサーの縦断面正面図である。As a result, when the position of the solidification interface changes, it is possible to automatically and steadily perform continuous casting by adjusting the drawing speed, ingot cooling capacity, molten metal temperature, mold heating temperature, etc. Well, even if an abnormal situation occurs, it is possible to detect it in advance. Imaji 11 Uranfuyu Right Imaji Next, I will explain according to the drawing. Figure 1 is a vertical cross-sectional front view of a horizontal continuous casting device that heats an open mold so that solidification starts near the mold outlet, and a non-contact temperature sensor such as an infrared quantity meter that constantly detects the solidification interface. It is.
保持炉３内の溶湯６は発熱体４によシ加熱された鋳型１
で、鋳塊５の内部から凝固し鋳型１の出口付近で鋳塊５
の表面層が凝固する。鋳塊５は第１図の右方向忙引き出
され、鋳塊５の抜熱は冷却装置２で冷却ノズルよシ冷却
水を噴霧して行う。The molten metal 6 in the holding furnace 3 is heated by the heating element 4 into the mold 1.
The ingot 5 solidifies from the inside, and the ingot 5 solidifies near the exit of the mold 1.
The surface layer of is solidified. The ingot 5 is drawn out in the right direction in FIG. 1, and heat is removed from the ingot 5 by spraying cooling water through a cooling nozzle in the cooling device 2.
冷却手段は、空冷やボックス減の間接冷却、冷却された
ピンチロール尋でも行うことが出来る。The cooling means can be air cooling, indirect cooling by box cooling, or cooled pinch roll fathom.
このような鋳造方法によると、さきに示したような内部
欠陥の少ない、加工性に富んだ表面層の滑らかな鋳塊を
得ることができる。According to such a casting method, it is possible to obtain an ingot with a smooth surface layer that is highly workable and has few internal defects as described above.
しかしながら、鋳塊表面層が鋳型出口付近で形成される
ため前記のように鋳型に供給される溶湯の温度や圧力、
加へ熱鋳型の温度分布、引き抜き速度、鋳型を出た後の
鋳塊の冷却等の条件の変動によって凝固界面の位ｗづに
ｆ／ｌｔ鰻に書葎するので、凝固界面の位置を常に把握
し、凝固界面の変動によって引抜き速度、鋳型的温度。However, since the ingot surface layer is formed near the mold outlet, the temperature and pressure of the molten metal supplied to the mold as described above,
The position of the solidification interface is always determined by changing the temperature distribution of the heating mold, the drawing speed, the cooling of the ingot after leaving the mold, etc. Understand the fluctuations of the solidification interface, pull-out speed, and temperature of the mold.
鋳塊の冷却などの上記条件を制御するために。To control the above conditions such as cooling of the ingot.
鋳型出口付近の上面に非接触温度センサーや赤外線放射
温変針７等を設置し、凝固界面を検知して鋳造条件を制
御する。これにより湯もれなどの危険性がなくなり安畑
した操業が可能とな以上のことは上面開放鋳型１部分開
放鋳型及び非開放鋳型の温度分布を連続的和測宕するこ
とによっても可能であゐ。第２図は、鋳型の出口付近に
熱電対を設置した水平連続鋳造装置の上面図である。鋳
型出口に向うに従って溶湯塩層は低下し鋳型出口で溶湯
は凝固温度となる。A non-contact temperature sensor, an infrared radiation temperature change needle 7, etc. are installed on the upper surface near the mold outlet to detect the solidification interface and control the casting conditions. This eliminates the risk of hot water leakage and enables smooth operation.The above can also be achieved by continuously measuring the temperature distribution of the top-open mold, the partially open mold, and the non-open mold. Wow. FIG. 2 is a top view of a horizontal continuous casting apparatus in which a thermocouple is installed near the outlet of the mold. The molten metal salt layer decreases toward the mold exit, and the molten metal reaches the solidification temperature at the mold exit.
そこで鋳型出口付近の鋳型内に熱電対８を設置し、連続
的に鋳型出口付近の温度分布を測定し。Therefore, a thermocouple 8 was installed inside the mold near the mold outlet, and the temperature distribution near the mold outlet was continuously measured.
これよシ凝固界面の変化を検知し、異常が生じた場合前
記の鋳造条件を制御し、常に正常な鋳造状態にする。Changes in the solidification interface are detected, and if an abnormality occurs, the casting conditions are controlled to maintain normal casting conditions.
このように本発明の鋳造法は湯もれ等の危険がなくな抄
、安宇した品質の鋳塊を得ることが出来るばかりでなく
、無人化操業をも可能にすることが出来る。As described above, the casting method of the present invention not only makes it possible to obtain a high-quality ingot without the risk of water leakage, etc., but also enables unmanned operation.
第１図は、開放鋳型の上方から非接触法により溶融部と
凝固部の界面を検知する本発明の詳細な説明する水平連
続鋳造装置の断面図である。
第２図は、鋳型の温度分布よ多金属の溶融部と凝固部界
面を検知する本発明の詳細な説明する水平連続鋳造装置
の上面図である。
１・・・・・・ 加熱モールド、２・・・・・・ 冷却
装置、３・曲・保持炉４・・・・・・発熱体、５・・・
・・・ 鋳 塊、６・・・・・・溶 湯７・・・・・・
非接触温度センサー、８・・・・・・ 熱電対特許出
願人 日本鉱業株式会社
代理人 弁理士（７５６９）並用啓志
第１Ｒ
第２図FIG. 1 is a sectional view of a horizontal continuous casting apparatus for explaining in detail the present invention, which detects the interface between a molten part and a solidified part from above an open mold by a non-contact method. FIG. 2 is a top view of a horizontal continuous casting apparatus illustrating in detail the present invention, which detects the interface between a molten part and a solidified part of a multimetal based on the temperature distribution of a mold. 1... Heating mold, 2... Cooling device, 3. Bending/holding furnace 4... Heating element, 5...
... Ingot, 6... Molten metal 7...
Non-contact temperature sensor, 8... Thermocouple patent applicant Nippon Mining Co., Ltd. Agent Patent attorney (7569) Keishi Namiyo No. 1R Figure 2
Claims (1)
鋳型の一方よシ溶融金属を供給し、他方よシ鋳塊を引出
す金属の水平連続鋳造法において、前記鋳型開放部にお
ける溶湯の温度分布又は前記鋳型の温度分布を検知して
鋳造全屈の凝固界面の位置を制御する金属の水平連続鋳
造法。 （２） 鋳型開放部分の溶湯から放射される赤外線量を
測定して９前記溶湯の温度分布を検知する特許請求の範
囲第１項記載の水平連続鋳造法。 （ｓ＋ ｇ数の熱電対により鋳型の温度分布を検知する
特１ｔ’ｆ 請求の範［第１項記載の水平連続鋳造法。[Scope of Claims] (Li) In a horizontal continuous metal casting method in which molten metal is supplied from one side of a penetrating heating mold with the upper surface of the mold partially or entirely open and an ingot is drawn from the other side, the mold is opened. A horizontal continuous casting method for metals in which the position of the solidification interface at full casting bend is controlled by detecting the temperature distribution of the molten metal in the open part of the mold or the temperature distribution of the mold. (2) Measurement of the amount of infrared rays emitted from the molten metal in the open part of the mold. 9. The horizontal continuous casting method according to claim 1, wherein the temperature distribution of the molten metal is detected. Horizontal continuous casting method as described in section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4711284A JPS60191641A (en) | 1984-03-14 | 1984-03-14 | Horizontal and continuous casting method of metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4711284A JPS60191641A (en) | 1984-03-14 | 1984-03-14 | Horizontal and continuous casting method of metal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60191641A true JPS60191641A (en) | 1985-09-30 |
Family
ID=12766090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4711284A Pending JPS60191641A (en) | 1984-03-14 | 1984-03-14 | Horizontal and continuous casting method of metal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60191641A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02263548A (en) * | 1989-04-05 | 1990-10-26 | Furukawa Electric Co Ltd:The | Method for continuously casting copper single crystal cast billet |
| KR100611082B1 (en) * | 1998-09-09 | 2006-08-10 | 카엠 오이로파 메탈 악티엔 게젤샤프트 | Method for driving a horizontal continuous strip casting apparatus and a horizontal continuous strip casting apparatus for performing the method |
-
1984
- 1984-03-14 JP JP4711284A patent/JPS60191641A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02263548A (en) * | 1989-04-05 | 1990-10-26 | Furukawa Electric Co Ltd:The | Method for continuously casting copper single crystal cast billet |
| KR100611082B1 (en) * | 1998-09-09 | 2006-08-10 | 카엠 오이로파 메탈 악티엔 게젤샤프트 | Method for driving a horizontal continuous strip casting apparatus and a horizontal continuous strip casting apparatus for performing the method |
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