JP4337349B2 - Molten metal supply method and molten metal supply device - Google Patents

Molten metal supply method and molten metal supply device Download PDF

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JP4337349B2
JP4337349B2 JP2003010309A JP2003010309A JP4337349B2 JP 4337349 B2 JP4337349 B2 JP 4337349B2 JP 2003010309 A JP2003010309 A JP 2003010309A JP 2003010309 A JP2003010309 A JP 2003010309A JP 4337349 B2 JP4337349 B2 JP 4337349B2
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molten metal
hot water
water supply
detection rod
speed
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JP2004216447A (en
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伸介 鵜飼
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Aisin Corp
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Aisin Seiki Co Ltd
Aisin Corp
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Description

【０００１】
【発明の属する技術分野】
本発明は、給湯方法、特に、例えば、略９０度回動されることにより鋳造がなされる金型に付設された取り鍋に溶湯を供給する溶湯供給方法及び溶湯供給装置に関する。
【０００２】
【従来の技術】
従来から、金型を略９０度回動することにより鋳造を行う方法が提供されている。この金型には、取り鍋が一体的に設けられており、鋳造の材料たる金属の溶湯が、金型の略９０度回動の前に、所定量、この取り鍋に供給されるようになっている。しかして、この所定量は、溶湯の湯面の高さを、レーザ測距（例えば、特許文献１参照）にて、測定される。
【０００３】
【特許文献１】
特開平６−２４１８６１号公報 （第２〜４頁、図１〜３）
【０００４】
【発明が解決しようとする課題】
ところが、上記したレーザ測距は、例えば三角測量の原理を採用しているが、溶湯を供給している間、溶湯の湯面は微小ではあるが波打っており、レーザの反射光が一定せず、三角測量の原理に依拠する湯面高さ（ひいては溶湯の供給量）の測定は、大きな誤差を避けることは出来ない。
【０００５】
それ故に、本発明は、略９０度回動されることにより鋳造がなされる金型に付設された取り鍋に前記鋳造の材料たる金属の溶湯の供給を精緻に行える、溶湯供給方法及び溶湯供給装置を提供せんことを、その課題とする。
【０００６】
【課題を解決するための手段】
上記した課題を解決するために講じた手段は、「略９０度回動されることにより鋳造がなされる金型に付設された取り鍋に鋳造の材料たる金属の溶湯を供給するための溶湯供給方法において、検知棒の所定の高さにおける溶湯の給湯開始から検知棒の先端面に溶湯が接触するまでの先端面接触時間を検出し、取り鍋の内部空間容積、検知棒高さ及び先端面接触時間から実平均給湯速度を演算し、実平均給湯速度と予め定めている設定平均給湯速度とを比較して給湯装置の作動速度を調整するようにしてなる、溶湯供給方法」を構成したことである。そして、「９０度回動されることにより鋳造がなされる金型に付設された取り鍋に鋳造の材料たる金属の溶湯を供給するための溶湯供給方法において、給湯装置が溶湯を供給する前に、待機位置にある検知棒が所定量だけ変位したときの取り鍋から検知棒までの高さである第１検知棒高さと第１検知棒高さから所定量だけ変位した第２検知棒高さと、溶湯の給湯開始から検知棒の先端面が第１検知棒高さにて溶湯と接触するまでの第１先端面接触時間と、溶湯の給湯開始から検知棒の先端面が第２検知棒高さにて溶湯と接触するまでの第２先端面接触時間とを検出し、取り鍋の内部空間容積、第１検知棒高さ及び第１先端面接触時間を用いて実第１平均給湯速度と、取り鍋の内部空間容積、第２検知棒高さ及び第２先端面接触時間を用いて実第２平均給湯速度とを演算し、予め定めている設定第１平均給湯速度と実第１平均給湯速度を比較した速度及び設定第２平均給湯速度と実第２平均給湯速度を比較した速度の少なくとも一方の結果に基づき給湯装置の作動速度を調整するようにしてなる、溶湯供給方法」を構成したことである。更に、「９０度回動されることにより鋳造がなされる金型に付設された取り鍋に鋳造の材料たる金属の溶湯を供給するための溶湯供給装置において、金型に設けられており溶湯を収容する取り鍋と、取り鍋に設けられた収容部と、溶湯を貯湯するとともに収容部へ溶湯を供給する給湯装置と、収容部内の溶湯高さを検知する検知棒と、予め定められた設定平均給湯速度が記憶されており給湯装置の給湯速度を調整する制御装置と、を備え、制御装置が、前記取り鍋の内部空間容積、収容部に供給される溶湯の給湯開始から検知棒の先端面に接触するまでの先端面接触時間と溶湯が前記先端面に接触したときの所定の検知棒高さから実平均給湯速度を演算し、実平均給湯速度と設定平均給湯速度とを比較した結果に基づいて給湯装置の作動速度を調整するようにしてなる、溶湯供給装置」を構成したことである。
【０００７】
【発明の実施の形態】
以下、本発明にかかる給湯方法の一実施形態を、
図１おいて、給湯システムは、金型１０を備える。金型１０は、上型１２と下型１４とから構成され、内部には鋳造されるべき製品（図示略）の外郭形状に一致する内面を有するキャビティ１６が画成されている。下型１４には取り鍋１８が一体的に設けられており、キャビティ１６が取り鍋１８の収容部１８１と連通している。取り鍋１８の収容部１８１は、上方開放の半球状凹部に形成されている。後述するように、給湯装置２０から鍋１８の収容部１８１に供給された金属の溶湯９０は、所定量に達すると、図示されない駆動装置により金型１０が略９０度回動されたとき、キャビティ１６内に流入して、鋳込まれ、製品が鋳造されるようになっている。
【０００８】
給湯装置２０は、本体２２内に製品の材料となる金属の溶湯９０が収容されている。溶湯９０内にはフロート２４が浮設されている。このフロート２４にはロッド２６の下端部が一体的に設けられている。ロッド２６の上端部はロッド駆動装置３０に連結されており、このロッド駆動装置３０の一方向作動（他方向作動）により、ロッド２６及びフロート２４が、上方向（下方向）に移動するようになっている。しかして、フロート２４が下方向に移動すると、その移動量に応じて溶湯９０の湯面が上昇して、溶湯９０が、給湯装置２０の本体２２に形成された出口２８から、金型１０の取り鍋１８の収容部１８１内に供給されるようになっている。
【０００９】
上記したロッド２６及びフロート２４の上下方向の移動は、制御装置４０がロッド駆動装置３０を指示することによりなされる。すなわち、制御装置４０がロッド駆動装置３０にロッド２６の移動方向（つまり上方向か下方向か）及び移動量を示す信号を送ると、ロッド駆動装置３０が作動する。ロッド２６の移動量は、信号としてロッド駆動装置３０から制御装置４０に送られており、この移動量が指示された移動量に達したとき、制御装置４０はロッド駆動装置３０をしてロッド２６を停止せしめる。尚、制御装置４０はロッド駆動装置３０をしてロッド２６の移動速度も調整せしめることが出来るようになっており、この速度に応じて単位時間当たりの、金型１０の取り鍋１８の収容部１８１内への溶湯９０の供給量が調整される。
【００１０】
溶湯９０が、給湯装置２０の本体２２に形成された出口２８から、金型１０の取り鍋１８の収容部１８１内に供給されている間、収容部１８１内においては、溶湯９０の湯面は上昇する。この溶湯９０の湯面の高さは、制御装置４０の統制下にある検知棒駆動装置５０により上下動される検知棒５２により知ることが出来る。すなわち、制御装置４０が検知棒５０にロッド検知棒５２の移動方向（つまり上方向か下方向か）及び移動量を示す信号を送ると、検知棒駆動装置５０が作動する。検知棒５２の移動量は、刻々、信号として検知棒駆動装置５０から制御装置４０に送られており、検知棒５２が溶湯９０の湯面に触れたとき、直ちに停止し、移動量は制御装置４０に記憶される。そして、制御装置４０は検知棒駆動装置５０を直ちに、検知棒５２を原位置に復帰せしめる。尚、制御装置４０は検知棒駆動装置５０をして検知棒５２の移動速度も調整せしめることが出来るようになっている。また、検知棒５２は、周知のように、開かれた回路の２つの端子を備えて、この端子が溶湯の湯面に触れたとき、この回路が、溶湯による端子短絡により閉成されて、その信号が、制御装置４０に伝えられ、この信号に依拠して、前述の検知棒５２の停止・復帰がなされるようになっている。
【００１１】
上記した構成により、本発明の給湯方法がいかにして履践されるか、具体的に説明する。
【００１２】
（１）給湯システムが待機状態にあるとき、つまり出湯開始前（ｔ＝Ｔ０）、図２の（Ａ）に示されるように、検知棒５２は、引っ込み位置（図１の実線で示される位置）から下降されて、高さＨ１の位置に変移される。
【００１３】
次に、給湯装置２０から溶湯９０が金型１０の取り鍋１８に供給される。この供給が継続している間、取り鍋１８内の溶湯９０の湯面は上昇し続け、ある時刻（ｔ＝Ｔ１）になると、取り鍋１８内の溶湯９０の湯面が検知棒１１の先端面の２つの端子に接触し、回路が閉成される。この回路閉成と同時に信号が、制御装置４０に送られる。制御装置４０は、この信号を受領すると同時に、検知棒１１を高さＨ２まで変移させる。つまり、図２の（Ｃ）において、検知棒１１は、破線位置から実線位置まで上昇させられる。
【００１４】
また、制御装置４０は、検知棒１１の高さＨ１、高さＨ１以下の取り鍋１８の内部空間容積（所与のものとして制御装置４０に記憶されている）及び給湯開始から湯面の検知棒１１の先端面接触までの時間（Ｔ１−Ｔ０）を用いて、実平均給湯速度ＣＶ１を計算する。しかして、制御装置４０内には、設定平均給湯速度ＳＶ１が記憶されており、制御装置４０は、ＣＶ１＞ＳＶ１（ＣＶ１＜ＳＶ１）の時は、制御装置４０は、給湯速度を減少（増加）させる。
【００１５】
上記した検知棒１１の上昇（高さＨ１から高さＨ２）は、溶湯９０の給湯速度よりも大きくなるようになされる。これにより、検知棒１１の先端部の溶湯９０の湯面への接触を最小限にとどめ、検知棒の先端部への溶湯の付着（所謂「つらら」現象）を防止し、検知棒の常時正常作動を担保するものである。
【００１６】
取り鍋１８内への溶湯９０の給湯が更に継続されることに伴い、溶湯９０の湯面は、図２の（Ｂ）の実線位置つまり図２の（Ｃ）の破線位置から、図２の（Ｄ）の実線位置（高さＨ２）まで上昇する。このときの時刻は、ｔ＝Ｔ３。すると、取り鍋１８内の溶湯９０の湯面が検知棒１１の先端面の２つの端子に接触し、回路が閉成される。この回路閉成と同時に信号が、制御装置４０に送られる。制御装置４０は、検知棒１１の高さＨ２、高さＨ２以下の取り鍋１８の内部空間容積（所与のものとして制御装置４０に記憶されている）及び給湯開始から湯面の検知棒１１の先端面接触までの時間（Ｔ３−Ｔ０）を用いて、実平均給湯速度ＣＶ２を計算する。しかして、制御装置４０内には、設定平均給湯速度ＳＶ２が記憶されており、制御装置４０は、ＣＶ２＞ＳＶ２（ＣＶ２＜ＳＶ２）の時は、制御装置４０は、給湯速度を減少（増加）させる。
【００１７】
そして、取り鍋１８内の溶湯９０の湯面が所定の高さに達すれば（取り鍋１８内の溶湯９０が所定量に達すれば）、給湯が停止される。
【００１８】
また、上記した（２）〜（４）の過程を繰り返すことで、取り鍋１８内の溶湯９０の湯面が給湯のパターンをある程度任意に、例えば図３に示すような態様に、設定できる。すなわち、図３に示す給湯態様は、給湯初期はユックリ給湯してエア巻き込み・温度低下を予防している。その後は、給湯時間短縮と温度低下防止のために給湯速度を上げて単位時間当たりの給湯量を増加させ、そして給湯完了前には、給湯精度向上のために給湯速度を減じている。
【００１９】
尚、給湯装置２０からの給湯をフロートの溶湯の押し出しに代えて、ポンプを用いても良い。この場合、ポンプの吐出量は可変であることが必要である。
【００２０】
【発明の効果】
本発明によれば、前記した課題解決は固より、給湯のパターンをある程度任意に設定できるので、生産性向上、原価低減を図ることが出来る。また、いわゆる「つらら」現象を回避でき、装置の精度・信頼性を確保できる。
【図面の簡単な説明】
【図１】本発明に係る給湯方法を実施する装置のブロック図。
【図２】本発明に係る給湯方法における湯面変化を経時的に示す図。
【図３】本発明に係る給湯方法における各要因の変化を示すグラフ。
【図４】本発明に係る別の給湯方法を実施したときの給湯速度の変化を示すグラフ。
【符号の説明】
１０ 金型
１１ 検知棒
１８ 取り鍋
２０ 給湯装置[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a hot water supply method, and in particular, to a molten metal supply method and a molten metal supply apparatus for supplying a molten metal to a ladle attached to a mold that is cast by being rotated approximately 90 degrees.
[0002]
[Prior art]
Conventionally, there has been provided a method for casting by rotating a mold approximately 90 degrees. The mold is provided with an integrated ladle so that a predetermined amount of molten metal, which is a casting material, is supplied to the ladle before the mold is rotated approximately 90 degrees. It has become. Thus, the predetermined amount is measured by laser ranging (for example, see Patent Document 1).
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 6-241861 (pages 2 to 4, FIGS. 1 to 3)
[0004]
[Problems to be solved by the invention]
However, although the above-mentioned laser ranging employs the principle of triangulation, for example, while the molten metal is being supplied, the molten metal surface is undulated, but the reflected light of the laser is kept constant. First, the measurement of the molten metal surface height (and hence the supply amount of molten metal) that relies on the principle of triangulation cannot avoid a large error.
[0005]
Therefore, the present invention provides a molten metal supply method and a molten metal supply capable of precisely supplying a molten metal, which is a material of the casting, to a ladle attached to a mold that is cast by being rotated approximately 90 degrees. The challenge is to provide a device .
[0006]
[Means for Solving the Problems]
The means taken in order to solve the above-mentioned problem is “a molten metal supply for supplying a molten metal as a casting material to a ladle attached to a mold which is casted by being rotated approximately 90 degrees. In the method, the tip surface contact time from the start of the molten metal supply at the predetermined height of the detection rod to the contact of the molten metal with the tip surface of the detection rod is detected, the internal space volume of the ladle, the detection rod height and the tip surface The actual average hot water supply speed was calculated from the contact time, and the melt supply method was configured to adjust the operating speed of the hot water supply device by comparing the actual average hot water supply speed with the preset average hot water supply speed. It is. And, in the molten metal supply method for supplying a molten metal as a casting material to a ladle attached to a mold that is cast by turning 90 degrees, before the hot water supply device supplies the molten metal The first detection rod height, which is the height from the ladle to the detection rod when the detection rod at the standby position is displaced by a predetermined amount, and the second detection rod height displaced by a predetermined amount from the first detection rod height. The first tip surface contact time from the start of molten metal supply until the tip surface of the detection rod comes into contact with the molten metal at the first detection rod height, and the tip surface of the detection rod from the start of molten metal supply is the second detection rod height. The second tip surface contact time until contact with the molten metal is detected, and the actual first average hot water supply speed is calculated using the internal space volume of the ladle, the first detection rod height, and the first tip surface contact time. , Using the internal space volume of the ladle, the height of the second detection rod and the contact time of the second tip surface 2 average hot-water supply speed is calculated, and at least a speed obtained by comparing a preset first average hot-water supply speed with the actual first average hot-water supply speed and a speed obtained by comparing the set second average hot-water supply speed with the actual second average hot-water supply speed That is, a “molten supply method” in which the operating speed of the hot water supply apparatus is adjusted based on one result is configured. Furthermore, in the molten metal supply apparatus for supplying a molten metal as a casting material to a ladle attached to a mold that is cast by being rotated 90 degrees, the molten metal provided in the mold A ladle to be accommodated, an accommodating portion provided in the ladle, a hot water supply device for storing molten metal and supplying the molten metal to the accommodating portion, a detection rod for detecting the height of the molten metal in the accommodating portion, and a predetermined setting An average hot water supply speed is stored, and a control device that adjusts the hot water supply speed of the hot water supply device, and the control device has an inner space volume of the ladle, the tip of the detection rod from the start of hot water supply of the molten metal supplied to the accommodating portion The result of comparing the actual average hot water supply speed with the set average hot water supply speed by calculating the actual average hot water supply speed from the tip surface contact time until contact with the surface and the predetermined detection rod height when the molten metal contacts the tip surface Based on the operating speed of the water heater Made so as to adjust, is that to constitute a molten metal supply device ".
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the hot water supply method according to the present invention,
In FIG. 1, the hot water supply system includes a mold 10. The mold 10 is composed of an upper mold 12 and a lower mold 14, and a cavity 16 having an inner surface corresponding to the outer shape of a product to be cast (not shown) is defined therein. The lower mold 14 is integrally provided with a ladle 18, and the cavity 16 communicates with the accommodating portion 181 of the ladle 18. The accommodating portion 181 of the ladle 18 is formed in a hemispherical recess that is open upward. As will be described later, when the molten metal 90 supplied from the hot water supply device 20 to the accommodating portion 181 of the pan 18 reaches a predetermined amount, when the mold 10 is rotated approximately 90 degrees by a drive device (not shown), It flows into 16 and is cast, and a product is cast.
[0008]
In the hot water supply device 20, a molten metal 90 that is a product material is accommodated in a main body 22. A float 24 is floated in the molten metal 90. The float 24 is integrally provided with a lower end portion of a rod 26. The upper end portion of the rod 26 is connected to the rod driving device 30, and the rod 26 and the float 24 are moved upward (downward) by one-way operation (operation in the other direction) of the rod driving device 30. It has become. Thus, when the float 24 moves downward, the molten metal surface of the molten metal 90 rises in accordance with the amount of movement, and the molten metal 90 flows from the outlet 28 formed in the main body 22 of the hot water supply device 20 to the mold 10. The ladle 18 is supplied into the accommodating portion 181.
[0009]
The above-described movement of the rod 26 and the float 24 in the vertical direction is performed by the control device 40 instructing the rod driving device 30. That is, when the control device 40 sends a signal indicating the moving direction (that is, upward or downward) and the amount of movement of the rod 26 to the rod driving device 30, the rod driving device 30 operates. The movement amount of the rod 26 is sent as a signal from the rod driving device 30 to the control device 40. When the movement amount reaches the instructed movement amount, the control device 40 causes the rod driving device 30 to operate the rod 26. To stop. In addition, the control apparatus 40 can adjust the moving speed of the rod 26 by using the rod driving apparatus 30, and the accommodating part of the ladle 18 of the mold 10 per unit time according to this speed. The supply amount of the molten metal 90 in the interior 181 is adjusted.
[0010]
While the molten metal 90 is being supplied from the outlet 28 formed in the main body 22 of the hot water supply device 20 into the accommodating portion 181 of the ladle 18 of the mold 10, the molten metal 90 has a molten metal surface within the accommodating portion 181. To rise. The height of the molten metal surface of the molten metal 90 can be known from the detection rod 52 that is moved up and down by the detection rod driving device 50 under the control of the control device 40. That is, when the control device 40 sends a signal indicating the movement direction (that is, upward or downward) of the rod detection rod 52 and the amount of movement to the detection rod 50, the detection rod driving device 50 operates. The movement amount of the detection rod 52 is sent as a signal from the detection rod driving device 50 to the control device 40 every moment. When the detection rod 52 touches the molten metal surface of the molten metal 90, the movement amount is immediately stopped. 40. Then, the control device 40 immediately returns the detection rod driving device 50 to the original position. The control device 40 can adjust the moving speed of the detecting rod 52 by using the detecting rod driving device 50. As is well known, the detection rod 52 includes two terminals of an open circuit, and when this terminal touches the surface of the molten metal, the circuit is closed due to a short circuit of the molten metal, The signal is transmitted to the control device 40, and the detection rod 52 is stopped and returned based on this signal.
[0011]
How the hot water supply method of the present invention is put into practice with the above configuration will be specifically described.
[0012]
(1) When the hot water supply system is in a standby state, that is, before the start of hot water (t = T0), as shown in FIG. 2A, the detection rod 52 is in the retracted position (the position shown by the solid line in FIG. 1). ) And is moved to the position of height H1.
[0013]
Next, the molten metal 90 is supplied from the hot water supply device 20 to the ladle 18 of the mold 10. While this supply continues, the molten metal level of the molten metal 90 in the ladle 18 continues to rise. At a certain time (t = T1), the molten metal level of the molten metal 90 in the ladle 18 becomes the tip of the detection rod 11. The two terminals on the surface are contacted and the circuit is closed. A signal is sent to the control device 40 simultaneously with the closing of the circuit. At the same time as receiving this signal, the control device 40 shifts the detection rod 11 to the height H2. That is, in FIG. 2C, the detection rod 11 is raised from the broken line position to the solid line position.
[0014]
Further, the control device 40 detects the hot water level from the height H1 of the detection rod 11, the internal space volume of the ladle 18 having the height H1 or less (stored in the control device 40 as a given one), and the hot water supply start. The actual average hot-water supply speed CV1 is calculated using the time (T1-T0) until the tip surface of the bar 11 comes into contact. Thus, the set average hot water supply speed SV1 is stored in the control device 40. When the control device 40 satisfies CV1> SV1 (CV1 <SV1), the control device 40 decreases (increases) the hot water supply speed. Let
[0015]
The above-described rise of the detection rod 11 (from the height H1 to the height H2) is made larger than the hot water supply speed of the molten metal 90. This minimizes the contact of the tip of the detection rod 11 to the molten metal surface of the molten metal 90, prevents adhesion of the molten metal to the tip of the detection rod (so-called “icicle” phenomenon), and the detection rod is always normal. It guarantees operation.
[0016]
As the hot water supply of the molten metal 90 into the ladle 18 is further continued, the molten metal surface of the molten metal 90 is moved from the position indicated by the solid line in FIG. 2B, that is, from the position indicated by the broken line in FIG. It rises to the solid line position (height H2) of (D). The time at this time is t = T3. Then, the surface of the molten metal 90 in the ladle 18 comes into contact with the two terminals on the front end surface of the detection rod 11, and the circuit is closed. A signal is sent to the control device 40 simultaneously with the closing of the circuit. The control device 40 has a height H2 of the detection rod 11, an internal space volume of the ladle 18 having a height H2 or less (stored in the control device 40 as a given one), and a hot water level detection rod 11 from the start of hot water supply. The actual average hot water supply speed CV2 is calculated using the time to contact the tip surface (T3-T0). Thus, the set average hot water supply speed SV2 is stored in the control device 40. When the control device 40 satisfies CV2> SV2 (CV2 <SV2), the control device 40 decreases (increases) the hot water supply speed. Let
[0017]
Then, when the surface of the molten metal 90 in the ladle 18 reaches a predetermined height (if the molten metal 90 in the ladle 18 reaches a predetermined amount), the hot water supply is stopped.
[0018]
In addition, by repeating the processes (2) to (4) described above, the hot water surface of the molten metal 90 in the ladle 18 can set the hot water supply pattern to some extent, for example, in a mode as shown in FIG. That is, in the hot water supply mode shown in FIG. 3, hot water supply is performed at the initial stage of hot water supply to prevent air entrainment and temperature decrease. Thereafter, in order to shorten the hot water supply time and prevent a temperature drop, the hot water supply speed is increased to increase the amount of hot water supply per unit time, and before the hot water supply is completed, the hot water supply speed is decreased to improve the accuracy of hot water supply.
[0019]
In addition, it may replace with the extrusion of the molten metal of a float instead of the hot water supply from the hot water supply apparatus 20, and may use a pump. In this case, the pump discharge amount needs to be variable.
[0020]
【The invention's effect】
According to the present invention, since the above-described problem solving is not limited, the hot water supply pattern can be arbitrarily set to some extent, so that productivity improvement and cost reduction can be achieved. In addition, the so-called “icicle” phenomenon can be avoided, and the accuracy and reliability of the apparatus can be secured.
[Brief description of the drawings]
FIG. 1 is a block diagram of an apparatus for carrying out a hot water supply method according to the present invention.
FIG. 2 is a view showing a change in hot water level over time in the hot water supply method according to the present invention.
FIG. 3 is a graph showing changes in factors in the hot water supply method according to the present invention.
FIG. 4 is a graph showing a change in hot water supply speed when another hot water supply method according to the present invention is carried out.
[Explanation of symbols]
10 Mold 11 Detection rod 18 Ladle 20 Hot water supply device

Claims (3)

略９０度回動されることにより鋳造がなされる金型に付設された取り鍋に前記鋳造の材料たる金属の溶湯を供給するための溶湯供給方法において、
検知棒の所定の高さにおける前記溶湯の給湯開始から前記検知棒の先端面に前記溶湯が接触するまでの先端面接触時間を検出し、
前記取り鍋の内部空間容積、前記検知棒高さ及び前記先端面接触時間から実平均給湯速度を演算し、
該実平均給湯速度と予め定めている設定平均給湯速度とを比較して給湯装置の作動速度を調整するようにしてなる、溶湯供給方法。In a molten metal supply method for supplying a molten metal as a material of the casting to a ladle attached to a mold that is cast by being rotated approximately 90 degrees,
Detecting the tip surface contact time from the start of hot water supply of the molten metal at a predetermined height of the detection rod until the molten metal contacts the tip surface of the detection rod;
Calculate the actual average hot water supply speed from the internal space volume of the ladle, the detection rod height and the tip surface contact time,
A molten metal supply method in which the actual average hot water supply speed is compared with a preset average hot water supply speed to adjust the operating speed of the hot water supply apparatus. 略９０度回動されることにより鋳造がなされる金型に付設された取り鍋に前記鋳造の材料たる金属の溶湯を供給するための溶湯供給方法において、

給湯装置が前記溶湯を供給する前に、待機位置から検知棒が所定量だけ変位したときの前記取り鍋から前記検知棒までの高さである第１検知棒高さと該第１検知棒高さから所定量だけ変位した第２検知棒高さと、
前記溶湯の給湯開始から前記検知棒の先端面が前記第１検知棒高さにて前記溶湯と接触するまでの第１先端面接触時間と、
前記溶湯の給湯開始から前記検知棒の先端面が前記第２検知棒高さにて前記溶湯と接触するまでの第２先端面接触時間とを検出し、
前記取り鍋の内部空間容積、前記第１検知棒高さ及び前記第１先端面接触時間を用いて実第１平均給湯速度と、
前記取り鍋の内部空間容積、前記第２検知棒高さ及び前記第２先端面接触時間を用いて実第２平均給湯速度とを演算し、
予め定めている設定第１平均給湯速度と前記実第１平均給湯速度を比較した速度及び設定第２平均給湯速度と前記実第２平均給湯速度を比較した速度の少なくとも一方の結果に基づき給湯装置の作動速度を調整するようにしてなる、溶湯供給方法。In a molten metal supply method for supplying a molten metal as a material of the casting to a ladle attached to a mold that is cast by being rotated approximately 90 degrees,

Before the hot water supply device supplies the molten metal, the height of the first detection rod and the height of the first detection rod, which is the height from the ladle to the detection rod when the detection rod is displaced by a predetermined amount from the standby position . The second detection rod height displaced by a predetermined amount from
First tip surface contact time from the start of hot water supply of the molten metal until the tip surface of the detection rod comes into contact with the molten metal at the height of the first detection rod;
Detecting the second tip surface contact time from the start of hot water supply of the molten metal until the tip surface of the detection rod comes into contact with the molten metal at the height of the second detection rod;
The actual first average hot water supply speed using the internal space volume of the ladle, the first detection rod height and the first tip surface contact time,
The actual second average hot water supply speed is calculated using the internal space volume of the ladle, the second detection rod height and the second tip surface contact time,
A hot water supply apparatus based on at least one of a result obtained by comparing a preset first average hot water supply speed with the actual first average hot water supply speed and a speed obtained by comparing the set second average hot water supply speed with the actual second average hot water supply speed. The molten metal supply method which adjusts the operating speed of the. 略９０度回動されることにより鋳造がなされる金型に付設された取り鍋に前記鋳造の材料たる金属の溶湯を供給するための溶湯供給装置において、
金型に設けられており溶湯を収容する取り鍋と、
該取り鍋に設けられた収容部と、
溶湯を貯湯するとともに前記収容部へ前記溶湯を供給する給湯装置と、
前記収容部内の溶湯高さを検知する検知棒と、
予め定められた設定平均給湯速度が記憶されており前記給湯装置の給湯速度を調整する制御装置と、を備え
該制御装置が、前記取り鍋の内部空間容積、前記収容部に供給される前記溶湯の給湯開始から前記検知棒の先端面に接触するまでの先端面接触時間及び前記溶湯が前記先端面に接触したときの所定の検知棒高さから実平均給湯速度を演算し、該実平均給湯速度と前記設定平均給湯速度とを比較した結果に基づいて前記給湯装置の作動速度を調整するようにしてなる、溶湯供給装置。In a molten metal supply apparatus for supplying a molten metal as a material of the casting to a ladle attached to a mold that is cast by being rotated approximately 90 degrees,
A ladle provided in the mold to accommodate the molten metal,
A container provided in the ladle;
A hot water supply device for storing molten metal and supplying the molten metal to the housing part;
A detection rod for detecting the height of the molten metal in the housing part;
A control device that stores a preset average hot water supply speed and adjusts the hot water supply speed of the hot water supply device, and the control device has an internal space volume of the ladle and the molten metal supplied to the storage unit. The actual average hot water speed is calculated from the tip surface contact time from the start of hot water supply to the contact with the tip surface of the detection rod and the predetermined detection rod height when the molten metal contacts the tip surface, The molten metal supply apparatus which adjusts the operating speed of the said hot water supply apparatus based on the result of having compared speed and the said setting average hot water supply speed.
JP2003010309A 2003-01-17 2003-01-17 Molten metal supply method and molten metal supply device Expired - Fee Related JP4337349B2 (en)

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