JPH0357554A - Pouring furnace - Google Patents
Pouring furnaceInfo
- Publication number
- JPH0357554A JPH0357554A JP19064689A JP19064689A JPH0357554A JP H0357554 A JPH0357554 A JP H0357554A JP 19064689 A JP19064689 A JP 19064689A JP 19064689 A JP19064689 A JP 19064689A JP H0357554 A JPH0357554 A JP H0357554A
- Authority
- JP
- Japan
- Prior art keywords
- pouring
- furnace
- furnace body
- molten metal
- sand
- 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
- 239000002184 metal Substances 0.000 claims abstract description 47
- 229910052751 metal Inorganic materials 0.000 claims abstract description 47
- 239000004576 sand Substances 0.000 claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
Landscapes
- Furnace Charging Or Discharging (AREA)
Abstract
Description
【発明の詳細な説明】
(産業上の利用分野)
この発明は、鋳造の際に溶融金属を鋳型などに供給する
注湯炉に関し、と《に注湯口の閉塞を回避しようとする
ものである。[Detailed Description of the Invention] (Field of Industrial Application) This invention relates to a pouring furnace that supplies molten metal to a mold, etc. during casting, and is intended to avoid clogging of the pouring port. .
(従来の技術)
鋳造における溶融金属の注湯は、日本鉄鋼協会編,新版
鉄鋼技術講座、製銑製鋼法 第1巻(地人書館) (1
985) P.265に示されるように、炉底に設けら
れた注湯口を寒くスライディングノズルあるいはストッ
パー棒の移動によって、注湯口を開閉して行うのが一般
的であり、さらに流量の制御も注湯口の開閉にて行って
いる。ここで、注湯口のシールが確実でないと溶融金属
が洩れるおそれがあり、出湯開始まで溶湯を注湯炉内に
保持し、溶湯或分や温度を調整することは難しい。(Conventional technology) Pouring of molten metal in casting is described in the Iron and Steel Institute of Japan, New Edition Steel Technology Course, Pigmaking and Steelmaking Methods Volume 1 (Chijinshokan) (1
985) P. As shown in No. 265, it is common to open and close the pouring port provided at the bottom of the furnace by moving a sliding nozzle or a stopper rod, and the flow rate is also controlled by opening and closing the pouring port. I'm going. Here, if the pouring port is not sealed reliably, there is a risk that the molten metal will leak, and it is difficult to hold the molten metal in the pouring furnace until the start of pouring and to adjust the amount and temperature of the molten metal.
また特開昭56−6775号や同56−26276号お
よび同51−121815号各公報には、炉体内をガス
によって加圧して注湯を行う技術が記載されている。Furthermore, Japanese Patent Laid-Open Publications No. 56-6775, No. 56-26276, and No. 51-121815 describe techniques for pouring metal by pressurizing the inside of the furnace with gas.
この手法では溶湯保持中における溶湯洩れの危険性は少
なくなるが、注湯時に炉体からのガス洩れが生じる可能
性が高く、ガス圧が低下すると目標注湯流量が得られな
いため、急冷薄帯製造用に使用すると板厚偏差の大きな
鋳片が鋳造されるのを避けることができない。そして数
トンオーダーの溶融金属を加圧により注湯するためには
炉体内径に比べて小さな径の注湯湯道が必要となるが、
この湯道内での溶湯の凝固あるいは酸化によって湯道の
閉塞が多発し、注湯が困難となる。さらにある量以上の
残湯がないとガス圧による注湯ができないため、炉内の
溶融金属をすべて注湯することは不可能である。This method reduces the risk of molten metal leaking while holding the molten metal, but there is a high possibility that gas will leak from the furnace body during pouring, and if the gas pressure decreases, the target pouring flow rate cannot be obtained, so it is difficult to rapidly cool and thin the melt. When used for band manufacturing, it is unavoidable that slabs with large deviations in plate thickness are cast. In order to pour molten metal on the order of several tons under pressure, a pouring runner with a diameter smaller than the diameter of the furnace body is required.
The solidification or oxidation of the molten metal within the runner often causes blockage of the runner, making pouring difficult. Furthermore, since pouring by gas pressure is not possible unless there is a certain amount of residual metal, it is impossible to pour all the molten metal in the furnace.
一方特開昭56−6776号公報には、取鍋を傾動し、
溶湯を落下させて注湯することが開示されているが、溶
湯の落下位置が傾動によって変化し、また流量の微調整
を傾動角度で行うのは難しく、とくに注湯速度制御の必
要な急冷薄帯などの鋳造には不向きである。On the other hand, in Japanese Patent Application Laid-open No. 56-6776, the ladle is tilted,
It is disclosed that the molten metal is poured by dropping it, but the falling position of the molten metal changes due to tilting, and it is difficult to finely adjust the flow rate by changing the tilting angle. It is not suitable for casting obi etc.
特開昭60−11.8651号公報には溶湯を注湯口よ
り下で保持し、炉体を傾動して注湯口から注湯する手法
が開示されているが、注湯口をプレートで開閉するだけ
で流量調整は不可能であり、また炉体の傾動時に注湯口
へ流れ込む微量の溶湯により注湯口が閉塞するおそれが
ある。JP-A No. 60-11.8651 discloses a method in which the molten metal is held below the spout and poured from the spout by tilting the furnace body, but this method simply opens and closes the spout with a plate. Therefore, it is impossible to adjust the flow rate, and there is a risk that the pouring spout may become clogged by a small amount of molten metal flowing into the pouring spout when the furnace body is tilted.
3
(発明が解決しようとする課題)
この発明は、溶融金属保持中の注湯口の閉塞および注湯
口からの湯洩れが無く、さらに注湯時の流量制御も安定
して行える注湯炉について提案することを目的とする。3 (Problems to be Solved by the Invention) This invention proposes a pouring furnace that prevents the pouring spout from being blocked or leaking while holding molten metal, and also allows stable flow rate control during pouring. The purpose is to
(課題を解決するための手段)
この発明は、溶融金属を装入する炉体に、この炉体の傾
動を司る傾動装置および溶融金属の加熱装置を付設した
注湯炉であって、
炉体の傾動前の直立姿勢において溶融金属液面より上方
で炉体の側面または上面を構或しかつ、炉体の傾動後の
注湯姿勢において炉体の底面を構或ずる炉壁に、注湯口
を形成し、この注湯口はその開口部を開閉するスライデ
ィングノズルをそなえてなる注湯炉およびさらに注湯口
に砂を装入する砂フィーダを設けてなる注湯炉である。(Means for Solving the Problems) The present invention is a pouring furnace in which a furnace body into which molten metal is charged is provided with a tilting device for controlling the tilting of the furnace body and a heating device for the molten metal, the furnace body A pouring port is provided in the furnace wall that forms the side or top surface of the furnace body above the molten metal liquid level in the upright position before tilting, and that forms the bottom surface of the furnace body in the pouring position after the furnace body is tilted. The pouring furnace is equipped with a sliding nozzle that opens and closes the opening of the pouring spout, and a sand feeder that charges sand into the pouring spout.
この発明において、加熱装置としては溶融金属を汚染し
ない電磁誘導加熱を行う、チャンネルヒーター等が有利
に適合し、またスライディングノズルは溶融金属の流量
制御が行えるように、柚圧4
サーボ弁で油圧シリンダーの押出量を調整し、このシリ
ンダーにて、開口面積を調整するものである。In this invention, a channel heater or the like that performs electromagnetic induction heating that does not contaminate the molten metal is advantageously suitable as the heating device, and the sliding nozzle is equipped with a hydraulic cylinder using a 4-servo valve to control the flow rate of the molten metal. The amount of extrusion is adjusted, and the opening area of the cylinder is adjusted.
さて第l図に従ってこの発明を具体的に説明する。Now, this invention will be explained in detail with reference to FIG.
図中1は溶融金属2を装入する炉体、3は溶融金属2の
装入口、4は注湯口、5は溶融金属2の保温を司る加熱
装置、そして6は炉体1の傾動を強制する傾動装置であ
る。注湯口4は、炉体1の外壁に設置したスライディン
グノズル7にて開閉がはかられる。In the figure, 1 is a furnace body into which molten metal 2 is charged, 3 is a charging port for molten metal 2, 4 is a pouring port, 5 is a heating device that keeps the molten metal 2 warm, and 6 is a forced tilting of the furnace body 1. It is a tilting device. The pouring spout 4 is opened and closed by a sliding nozzle 7 installed on the outer wall of the furnace body 1.
第2図は、直立姿勢の炉体1を傾動装置6にて傾動し、
注湯姿勢とした状態を示し、すなわち注湯口4の形成さ
れた炉壁が炉体の側面から底面となって水平になるまで
傾動装置6にて傾ける。炉体1が所定位置まで傾いたな
らば、注湯口4をスライディングノズル7の移動にて開
き注湯を開始し、流N調整はスライディングノズル7の
移動量調節によって注湯口4の開口面積を変化させて行
う。FIG. 2 shows the furnace body 1 in an upright position being tilted by a tilting device 6.
The furnace is shown in the pouring position, that is, tilted by the tilting device 6 until the furnace wall on which the pouring port 4 is formed becomes horizontal from the side to the bottom of the furnace body. When the furnace body 1 is tilted to a predetermined position, the pouring port 4 is opened by moving the sliding nozzle 7 to start pouring, and the flow N is adjusted by changing the opening area of the pouring port 4 by adjusting the amount of movement of the sliding nozzle 7. Let me do it.
5
(作 用)
炉内に溶融金属を長時間にわたり保持するには、注湯口
からの溶融金属の洩れと注湯口内の閉塞を防ぐことが重
要である。5 (Function) In order to retain molten metal in the furnace for a long time, it is important to prevent leakage of molten metal from the spout and blockage in the spout.
そこで第1図に示したように、炉体の傾動前の直立状態
において、すなわち注湯以前は熔融金属の保持場面より
高い位置となる炉壁(炉体の側面または上面)に注湯口
を形或するとともに、熔融金属の温度管理のために加熱
装置を設けることが有効である。Therefore, as shown in Figure 1, when the furnace body is upright before tilting, that is, before pouring, a pouring port is formed on the furnace wall (side or top surface of the furnace body), which is at a higher position than the area where the molten metal is held. In addition, it is effective to provide a heating device to control the temperature of the molten metal.
次に第2図に示した、炉体傾動後の注湯姿勢において、
溶融金属の落下位置を一点に、そして必要な場合は炉内
の溶融金属をすべて注湯するために、注湯口が設けられ
た炉壁が水平となって炉体の底面に注湯口が位置するま
で傾動できかつその傾角で固定できる構造にする必要が
ある。Next, in the pouring position after tilting the furnace body as shown in Figure 2,
In order to ensure that the molten metal falls at a single point and, if necessary, to pour all of the molten metal in the furnace, the furnace wall where the pouring spout is installed is horizontal and the pouring spout is located at the bottom of the furnace body. It is necessary to have a structure that can be tilted to a maximum angle and fixed at that tilt angle.
さらに溶融金属の流量を制御するために注湯口にこの開
口部を横切る向きに可動のスライディングノズルを、注
湯口の開口部に設置する。Furthermore, a sliding nozzle movable across the opening of the pouring spout is installed in the pouring spout in order to control the flow rate of the molten metal.
なお初期傾動時に注湯口内へ微量流れ込む溶湯6
により注湯口が閉塞されるのを防止するには、傾動前に
スライディングノズルにて注湯口を閉め、注湯口内を砂
で満たしておき、傾動完了後スライディングノズルを開
いて砂を排出してから注湯を開始するのが有利である。To prevent the pouring spout from being blocked by a small amount of molten metal 6 flowing into the pouring spout during the initial tilting, close the pouring spout with a sliding nozzle and fill the spout with sand before tilting is completed. It is advantageous to open the post-sliding nozzle and drain the sand before starting pouring.
(実施例) 第3図にこの発明に従う実施例を示す。(Example) FIG. 3 shows an embodiment according to the invention.
炉体1は傾動装置となる油圧式シリンダー6Aにより支
持部8を中心に傾動される。一方注湯口4には、注湯口
4に対して進退可動の砂フィーダ9から砂10が供給さ
れる。なお11は砂止めである。The furnace body 1 is tilted around the support portion 8 by a hydraulic cylinder 6A serving as a tilting device. On the other hand, sand 10 is supplied to the pouring port 4 from a sand feeder 9 that is movable forward and backward relative to the pouring port 4 . Note that 11 is a sand stopper.
この例で炉体1は5トンの熔融金属2を保持することが
可能で、加熱装置として最大200kHのチャンネルヒ
ーター5Aをそなえ、溶融金属2の温度管理を行う。こ
こでチャンネルヒーターとは交流電磁石近傍にループを
形成する流路内の溶融金属を誘導加熱する装置である。In this example, the furnace body 1 is capable of holding 5 tons of molten metal 2, and is equipped with a channel heater 5A of maximum 200 kHz as a heating device to control the temperature of the molten metal 2. Here, the channel heater is a device that inductively heats molten metal in a flow path that forms a loop near an AC electromagnet.
さて炉体lの傾動前にはスライディングノズル7にて注
湯口4を閉めておき、砂フィーダ9から砂止め11で囲
まれた注湯口4に砂10を充てんする。Now, before the furnace body l is tilted, the pouring port 4 is closed by the sliding nozzle 7, and the pouring port 4 surrounded by the sand stopper 11 is filled with sand 10 from the sand feeder 9.
次いで油圧シリンダー6八によって炉体1を傾動し、注
湯口4の設けられた炉側壁が水平になって炉の底面とな
る位置で傾動を終了し、炉休1を固定する。そしてスラ
イディングノズル7を移動させ注湯口4を開いて砂10
を排出し、注湯を開始ずる。Next, the furnace body 1 is tilted by the hydraulic cylinder 68, and the tilting ends at a position where the furnace side wall where the pouring port 4 is provided becomes horizontal and becomes the bottom surface of the furnace, and the furnace body 1 is fixed. Then, move the sliding nozzle 7, open the pouring port 4, and pour the sand 10.
Drain the water and start pouring water.
注湯が終了したならば、炉体1を再び直立姿勢に復帰さ
せ、次回の溶融金属の装入に供する。When the pouring is finished, the furnace body 1 is returned to an upright position and is ready for the next charging of molten metal.
この注湯炉を用いて、炉内に装入した5tの溶鋼を注湯
速度4.5±0.05kg/sで注湯したところ、炉内
の最大残湯量が50kgになるまで、安定した出湯が可
能であった。Using this pouring furnace, 5 tons of molten steel charged into the furnace was poured at a pouring rate of 4.5 ± 0.05 kg/s, and the amount remained stable until the maximum amount of remaining metal in the furnace reached 50 kg. It was possible to access the hot springs.
一方上述の加圧式注湯炉を使用した場合、注湯速度は4
.5±0.20kg/sで加圧限界として炉内残湯量が
3tを下まわる出湯はできなかった。さらにAI, C
rを含む酸化しやすい溶鋼を保持した場合、加圧弐注湯
炉では注湯前に毎回湯道閉塞物の除去を行わなくてはな
らなかったが、第3図に示した注湯炉では、この閉塞物
除去に関するメンテナンス作業は全て不必要で安定した
操業が実現できた。On the other hand, when using the above-mentioned pressurized pouring furnace, the pouring speed is 4
.. At a pressure of 5±0.20 kg/s, the amount of hot metal remaining in the furnace could not be tapped below 3 tons as the pressurization limit. Furthermore, AI, C
When holding molten steel that is easily oxidized and contains r, in a pressurized two-pouring furnace it was necessary to remove runner blockages before each pouring process, but in the pouring furnace shown in Figure 3, All maintenance work related to removing blockages was unnecessary and stable operation was achieved.
(発明の効果)
この発明の注湯炉を用いれば、溶融金属の保持中の溶融
金属の洩れおよび注湯口の閉塞を回避でき、また注渦中
の流量制御も高精度で達威し得る。(Effects of the Invention) By using the pouring furnace of the present invention, it is possible to avoid leakage of molten metal and blockage of the pouring port while holding the molten metal, and it is also possible to achieve highly accurate flow rate control during pouring.
したがって注湯速度の調整を不可欠とする急冷薄帯製造
用の注湯炉にも適用することができる。Therefore, the present invention can also be applied to a pouring furnace for producing rapidly cooled ribbon, which requires adjustment of the pouring speed.
【図面の簡単な説明】
第1図はこの発明に従う注湯炉を示す模式図、第2図は
第1図の注湯炉の注湯姿勢を示す模式図、
第3図はこの発明の好適実施例を示す模式図、第4図は
第3図の注湯炉の注湯姿勢を示す模式図である。
1・・・炉体 2・・・溶融金属3・・・
装入口 4・・・注湯口5・・・加熱装置
5A・・・チャンネルヒーター6・・・傾動装
置 6A・・・油圧シリンダー7・・・スライ
ディングノズル
8・・・支持部 9・・・砂フィーダIO・
・・砂 11・・・砂止め=9[Brief Description of the Drawings] Fig. 1 is a schematic diagram showing a pouring furnace according to the present invention, Fig. 2 is a schematic diagram showing a pouring posture of the pouring furnace of Fig. 1, and Fig. 3 is a preferred embodiment of the present invention. FIG. 4 is a schematic diagram showing the embodiment, and FIG. 4 is a schematic diagram showing the pouring posture of the pouring furnace of FIG. 1... Furnace body 2... Molten metal 3...
Charging port 4...Pouring port 5...Heating device
5A...Channel heater 6...Tilt device 6A...Hydraulic cylinder 7...Sliding nozzle 8...Support part 9...Sand feeder IO・
・・Sand 11・・Sand stopper=9
Claims (1)
傾動装置および溶融金属の加熱装置を付設した注湯炉で
あって、 炉体の傾動前の直立姿勢において溶融金属 液面より上方で炉体の側面または上面を構成しかつ、炉
体の傾動後の注湯姿勢において炉体の底面を構成する炉
壁に、注湯口を形成し、この注湯口はその開口部を開閉
するスライディングノズルをそなえてなる注湯炉。 2、請求項1に記載の注湯炉において、さらに注湯口に
砂を装入する砂フィーダを設けてなる注湯炉。[Scope of Claims] 1. A pouring furnace in which a furnace body into which molten metal is charged is provided with a tilting device for controlling the tilting of the furnace body and a heating device for the molten metal, the furnace body being upright before being tilted. A pouring port is formed in the furnace wall that constitutes the side or top surface of the furnace body above the molten metal liquid level in the posture and constitutes the bottom surface of the furnace body in the pouring posture after the furnace body is tilted. is a pouring furnace equipped with a sliding nozzle that opens and closes the opening. 2. The pouring furnace according to claim 1, further comprising a sand feeder for charging sand into the pouring port.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19064689A JPH0357554A (en) | 1989-07-25 | 1989-07-25 | Pouring furnace |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP19064689A JPH0357554A (en) | 1989-07-25 | 1989-07-25 | Pouring furnace |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0357554A true JPH0357554A (en) | 1991-03-12 |
Family
ID=16261542
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP19064689A Pending JPH0357554A (en) | 1989-07-25 | 1989-07-25 | Pouring furnace |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0357554A (en) |
-
1989
- 1989-07-25 JP JP19064689A patent/JPH0357554A/en active Pending
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