JP2725353B2 - How to replenish molten metal in the holding furnace - Google Patents
How to replenish molten metal in the holding furnaceInfo
- Publication number
- JP2725353B2 JP2725353B2 JP6409589A JP6409589A JP2725353B2 JP 2725353 B2 JP2725353 B2 JP 2725353B2 JP 6409589 A JP6409589 A JP 6409589A JP 6409589 A JP6409589 A JP 6409589A JP 2725353 B2 JP2725353 B2 JP 2725353B2
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- amount
- hot water
- holding
- water distribution
- 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.)
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- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Description
【発明の詳細な説明】 (産業上の利用分野) 本発明は、手元保持炉に溶湯を補給する方法に関す
る。Description: TECHNICAL FIELD The present invention relates to a method for supplying molten metal to a holding furnace.
(従来の技術) 一般に、手元保持炉から溶湯を汲み出すとき、溶湯が
一定レベルに達すると給湯を行なえなくなってしまう。
そして、従来このような給湯可能な最低保持レベル(い
わゆる湯待ちレベル)に達する前に手元保持炉に溶湯を
補給するようにしていた。この場合、一般には対象とな
る複数種類の鋳造製品の鋳込重量及び鋳造サイクルの平
均値をとり、この平均値を有する鋳造製品(以下、平均
的鋳造製品という)を想定し、この平均的鋳造製品を得
るのに要する溶湯量をあらかじめ見込んでおき、溶湯補
給する前の溶湯のレベルが湯待ちレベルに達しないよう
に、配湯指示を行なう時の溶湯レベル(以下、配湯指示
レベルという)を設定していた。(Prior Art) Generally, when drawing molten metal from a holding furnace, if the molten metal reaches a certain level, it becomes impossible to supply hot water.
Conventionally, the molten metal is supplied to the holding furnace before reaching the minimum holding level at which such hot water can be supplied (so-called hot water waiting level). In this case, generally, an average value of the casting weight and the casting cycle of a plurality of types of casting products to be processed is taken, and a casting product having this average value (hereinafter referred to as an average casting product) is assumed. The amount of molten metal required to obtain the product is estimated in advance, and the molten metal level at the time of giving the molten metal distribution instruction (hereinafter referred to as a molten metal distribution instruction level) so that the level of the molten metal before replenishing the molten metal does not reach the molten metal waiting level. Was set.
(発明が解決しようとする課題) しかしながら、上述した従来の溶湯補給方法には次の
ような問題点があった。(Problems to be Solved by the Invention) However, the above-described conventional melt replenishing method has the following problems.
対象となる鋳造製品の単位時間当りの溶湯消費量
(以下、溶湯消費率という)が平均的鋳造製品の溶湯消
費率より大きい場合、配湯指示を行なっても溶湯保持レ
ベルが往々にして湯待ちレベルに達して設備停止を来
し、この結果生産性を低下させてしまうおそれがあっ
た。If the molten metal consumption per unit time of the target cast product (hereinafter, referred to as the molten metal consumption rate) is larger than the average molten metal consumption rate of the cast product, the molten metal holding level is often kept waiting even if the instruction to distribute the molten metal is issued. When the equipment reaches the level, the equipment is stopped, and as a result, the productivity may be reduced.
上記と逆に、対象となる鋳造製品の溶湯消費率が
平均的鋳造製品の溶湯消費率より小さい場合、配湯指示
に応じてそのまま溶湯を補給するため早目勝ちの配湯と
なり、この結果使用しない状態で溶湯を保持するという
いわゆる残湯を発生し易かった。また、他に優先すべき
保持炉があったとしてもその優先すべき保持炉の必要性
に関係なく、配湯指示に応じて溶湯を補給するため設備
全体として生産上アンバランスになり、この結果生産性
が低下してしまうおそれがあった。Conversely, when the molten metal consumption rate of the target cast product is smaller than the average molten metal consumption rate of the cast product, the molten metal is replenished as it is in accordance with the hot water distribution instruction, resulting in a quicker distribution of molten metal. So-called residual hot water, that is, holding the molten metal in a state where it is not used, was likely to occur. In addition, even if there are other holding furnaces to be prioritized, regardless of the necessity of the holding furnace to be prioritized, the supply of molten metal in accordance with the hot water distribution instruction will result in production imbalance as a whole equipment, and as a result There was a risk that productivity would decrease.
本発明は、上記問題点の解決を課題としてなされたも
ので、対象製品の溶湯消費率の相違にかかわらず適切に
溶湯の補給を行なえてひいては生産性の向上を図れる手
元保持炉の溶湯補給方法を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has a method for replenishing molten metal in a hand-held furnace capable of appropriately replenishing molten metal irrespective of a difference in a molten metal consumption rate of a target product and thereby improving productivity. The purpose is to provide.
(課題を解決するための手段) 本発明は、上記目的を達成するために、手元保持炉の
溶湯量を検出する溶湯量検出手段と、各種データを入力
・設定する設定器および前記溶湯量検出手段に接続して
前記設定器の設定データおよび前記溶湯量検出手段の検
出データに応じて演算処理する演算手段と、を有する制
御装置を用い、 鋳造製品の1回当りの汲み出し量(WC)を鋳造サイク
ルタイム(tC)で除算して溶湯消費率(w)を求め、 該溶湯消費率(w)にあらかじめ設定される配湯待機
時間(t0)を乗算して配湯指示・湯待ち保持量(W0)を
求め、 配湯指示・湯持ち保持量(W0)にあらかじめ設定され
る湯待ち量(WS)を加算して基準溶湯保持量〔配湯指示
時保持量〕(WL)を算出し、 前記溶湯量検出手段が検出した溶湯量が前記基準溶湯
保持量〔配湯指示時保持量〕(WL)以下になったとき溶
湯補強の指示を行なうことを特徴とする。(Means for Solving the Problems) In order to achieve the above object, the present invention provides a molten metal amount detecting means for detecting the amount of molten metal in a holding furnace, a setting device for inputting and setting various data, and the molten metal amount detection. Using a control device having an operation means connected to the setting means for performing arithmetic processing in accordance with the setting data of the setting device and the detection data of the molten metal amount detection means, and a pumping amount per casting product (W C ). Is divided by a casting cycle time (t C ) to obtain a molten metal consumption rate (w). The molten metal consumption rate (w) is multiplied by a preset hot water distribution waiting time (t 0 ) to give a hot water distribution instruction / hot water. The waiting holding amount (W 0 ) is obtained, and a preset hot water waiting amount (W S ) is added to the hot water supply instruction / hot water holding amount (W 0 ), and the reference molten metal holding amount [the holding amount at the time of hot water supply instruction] (W L) is calculated, and the melt volume the melt amount detecting means detects said reference And performing an instruction of the molten metal reinforcement when it becomes less water retention amount [Haiyu instruction when holding amount] (W L).
(作用) 本発明は、上記構成によって、溶湯消費率(w)にあ
らかじめ設定される配湯待機時間(t0)を乗算して配湯
指示・湯待ち保持量(W0)を求め(W0=w×t0)、 配湯指示・湯待ち保持量(W0)にあらかじめ設定され
る湯待ち量(WS)を加算して基準溶湯保持量〔配湯指示
時保持量〕(WL)を算出し(WL=W0+WS)、溶湯量検出
手段が検出した溶湯量が基準溶湯保持量〔配湯指示時保
持量〕(WL)以下になったとき溶湯補給の指示を行な
う。(Operation) According to the present invention, the molten metal consumption rate (w) is multiplied by a preset hot water distribution standby time (t 0 ) to obtain a hot water distribution instruction / hot water holding amount (W 0 ) (W 0 ). 0 = w × t 0 ), a preset hot water waiting amount (W S ) is added to a hot water distribution instruction / hot water holding amount (W 0 ), and a reference molten metal holding amount [a hot water distribution instruction holding amount] (W L ) is calculated (W L = W 0 + W S ), and when the amount of the molten metal detected by the molten metal amount detecting means becomes equal to or less than a reference molten metal holding amount [a holding amount at the time of a molten metal distribution instruction] (W L ), a molten metal replenishing instruction is given. Perform
(実施例) 以下に、本発明の一実施例の手元保持炉の溶湯補給方
法について図を参照して説明する 第1図はこの手元保持炉の溶湯補給方法が用いられる
手元保持炉設備1を示している。この手元保持炉設備1
は、ルツボ型保持炉(以下、保持炉という)2を有し、
この保持炉2のルツボ3にアルミ、亜鉛などの軽合金の
溶湯4を保持している。ルツボ3の溶湯4は給湯装置
(図示せず)によりルツボから汲み出され鋳造の用に供
される。(Embodiment) Hereinafter, a method for replenishing molten metal in a hand holding furnace according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 shows a hand holding furnace equipment 1 in which the method for replenishing molten metal in a hand holding furnace is used. Is shown. This hand holding furnace equipment 1
Has a crucible type holding furnace (hereinafter, referred to as holding furnace) 2,
A crucible 3 of the holding furnace 2 holds a molten metal 4 of a light alloy such as aluminum or zinc. The molten metal 4 of the crucible 3 is pumped out of the crucible by a hot water supply device (not shown) and used for casting.
保持炉2には制御装置5を設けてある。制御装置5は
保持炉2の溶湯量を検出する溶湯量検出装置6と、後述
の設定器7を接続した演算装置8と、を備えている。The holding furnace 2 is provided with a control device 5. The control device 5 includes a molten metal amount detection device 6 for detecting the amount of molten metal in the holding furnace 2 and a calculation device 8 to which a setting device 7 described later is connected.
溶湯量検出装置6は、保持炉2の上方位置に配置した
昇降シリンダ9を備えている。昇降シリンダ9のピスト
ンロッド10にはブラケット11を取付けてある。ブラケッ
ト11にはレベルセンサ12およびスケール13を取付けてあ
る。スケール13の近傍にはこのスケール13を読取る位置
センサ14を設けてある。レベルセンサ12は、昇降シリン
ダ9の作動によるピストンロッド10の下降により溶湯4
に接触するまで下降するようになっている。また、位置
センサ14は、レベルセンサ12が溶湯に接触した時の読取
り値(すなわち、溶湯4のレベルを示す値)を位置デー
タaとして出力するようにしてある。位置センサ14には
溶湯レベル計15を接続してある。溶湯レベル計15は位置
データaに基づいて溶湯4のレベルLPを示すデータ(以
下、溶湯レベルデータLPという)を演算装置8へ出力す
るようになっている。The molten metal amount detecting device 6 includes an elevating cylinder 9 disposed at a position above the holding furnace 2. A bracket 11 is attached to a piston rod 10 of the lifting cylinder 9. The bracket 11 has a level sensor 12 and a scale 13 attached thereto. In the vicinity of the scale 13, a position sensor 14 for reading the scale 13 is provided. The level sensor 12 detects the molten metal 4 by lowering the piston rod 10 by the operation of the lifting cylinder 9.
It descends until it touches. The position sensor 14 outputs a read value (ie, a value indicating the level of the molten metal 4) when the level sensor 12 comes into contact with the molten metal as position data a. The molten metal level gauge 15 is connected to the position sensor 14. Melt level meter 15 is data indicating the level L P of the molten metal 4 based on the position data a (hereinafter, referred to as the melt level data L P) which is to be output to the calculating unit 8.
演算装置8に接続した設定器7には1回当りの溶湯汲
み出し量(1回当りの汲み出し量)に相当する鋳込重量
WCを示すデータ(以下、鋳込重量データWCという),鋳
造サイクルタイムtCを示すデータ(以下,サイクルタイ
ムデータtCという),湯待ち保持量WSを示すデータ(以
下、湯待ち保持量データWSという)および製品種類を特
定する製品データbが入力・設定されるようになってお
り、この設定により演算装置8にはこれらデータWC,tC,
WS,dが入力されるようになっている。The setting unit 7 connected to the arithmetic unit 8 has a casting weight corresponding to the amount of molten metal drawn out per time (the amount drawn out per time).
W data indicating C (hereinafter, referred to as casting weight data W C), data indicating the casting cycle time t C (hereinafter, referred to as cycle time data t C), data indicating the water waiting holding amount W S (hereinafter, hot wait product data b for specifying the holding amount of data W S) and products types being adapted to be input and set, these data W C is the arithmetic unit 8 by the setting, t C,
W S , d is input.
演算装置8は、マイクロプロセッサで構成され、あら
かじめ格納している制御プログラムを実行して入力デー
タLP,WC,tC,WS,dに対して後述のような演算処理を行な
い、この処理結果に応じて配湯指示信号dをディスプレ
イや音声発生装置等の報知手段(図示せず)へ送出して
作業者に溶湯4を補給すべき旨を知らせるようにしてあ
る。The arithmetic unit 8 is composed of a microprocessor, executes a control program stored in advance, and performs an arithmetic process as described below on the input data L P , W C , t C , W S , and d. In accordance with the processing result, a hot water distribution instruction signal d is sent to a notifying means (not shown) such as a display or a sound generator so as to notify the worker that the molten metal 4 should be supplied.
この演算装置8は、処理機能で示す(第2図参照)、
溶湯レベル・溶湯保持量メモリ16と、保持量算出部17
と、消費率算出部18と、配湯待機時間設定部19と、配湯
指示・湯待ち間重量算出部20と、湯待ち溶湯量メモリ21
と、配湯指示保持量算出部22と、判定部23と、から成っ
ている。The arithmetic unit 8 is represented by a processing function (see FIG. 2).
Molten level / melt holding amount memory 16 and holding amount calculation unit 17
A consumption rate calculating unit 18, a hot water distribution waiting time setting unit 19, a hot water distribution instruction / hot water waiting time calculating unit 20, and a hot water molten metal amount memory 21
And a hot water distribution instruction holding amount calculation unit 22 and a determination unit 23.
溶湯レベル・溶湯保持量メモリ16は、実験あるいは計
算により例えば第3図に示すように求められている保持
炉2における溶湯2のレベルと溶湯4の保持量との対応
関係をあからじめ格納している。The molten metal level and molten metal holding amount memory 16 preliminarily stores the correspondence between the level of the molten metal 2 in the holding furnace 2 and the retained amount of the molten metal 4 obtained by experiments or calculations as shown in FIG. 3, for example. doing.
保持量算出部17は、溶湯レベル計15から溶湯レベルデ
ータLPを入力すると、このデータLPをアドレスとして前
記メモリ16から対応する溶湯保持量データWを読出す。Holding amount calculation unit 17, when the molten metal level gauge 15 to enter the molten metal level data L P, reads the melt storage amount data W corresponding from the memory 16 the data L P as an address.
消費率算出部18は、鋳込重量データWCおよび鋳造サイ
クルタイムtCを用いて次式(1)の演算を行なって溶湯
消費率wを示すデー w=WC/tC ……(1) タ(以下、溶湯消費率データwという)を算出するとと
もに、この算出した溶湯消費率データwを一旦格納す
る。The consumption rate calculation unit 18 calculates the following equation (1) using the casting weight data W C and the casting cycle time t C to indicate the molten metal consumption rate w: w = W C / t C (1) (Hereinafter, referred to as molten metal consumption rate data w), and temporarily stores the calculated molten metal consumption rate data w.
配湯待機時間設定部19は、製品データdを受け、配湯
指示から手元保持炉への溶湯補給までに要する配湯作業
時間(th)の作業のばらつきによる変動時間を加えて配
湯配置時間(t0)を設定する。The hot water distribution waiting time setting unit 19 receives the product data d, and adds a fluctuation time due to a variation in the hot water distribution work time (t h ) required from the hot water distribution instruction to the replenishment of the molten metal to the holding furnace, and arranges the hot water distribution. Set the time (t 0 ).
配湯指示・湯待ち間重量算出部20は、次式(2)の算
出を行なって、配湯指示信号b出力から湯待ちを生じる
までに汲み出されると推定される溶湯量(以下、配湯指
示・湯待ち間重量という)W0を算出する。The hot water distribution instruction / waiting water weight calculating unit 20 calculates the following equation (2), and calculates the amount of molten metal (hereinafter referred to as “distribution”) which is estimated to be drawn out from the output of the hot water distribution instruction signal b until the hot water wait occurs. that weight between the hot water instructions and hot water wait) to calculate the W 0.
WO=w×tO ……(2) 湯待ち溶湯量メモリ21は、設定器7に入力された湯待
ち保持量WSを示すデータ(以下、湯待ち保持量データWS
という)を格納する。W O = w × t O (2) The hot water holding amount memory 21 stores data indicating the hot water holding amount W S input to the setting unit 7 (hereinafter, hot water holding amount data W S).
Is stored).
配湯指示時保持量算出部22は、次式(3)の演算を行
なって、配湯指示信号bを出力する時に保持炉2に保持
しておくべき溶湯量(以下、配湯指示時保持量(基準溶
湯保持量)WLという)を算出する。The hot water distribution instruction holding amount calculation unit 22 performs an operation of the following equation (3) to calculate the amount of molten metal to be held in the holding furnace 2 when the hot water distribution instruction signal b is output (hereinafter, “hot water distribution instruction holding”). to calculate the amount of (reference molten metal holding amount) W L).
WL=WO+WS ……(3) 判定部22は、保持量算出部17から溶湯保持量Wを入力
してこれを配湯指示時保持量WLと比較し、次式(4)に W≦WL ……(4) 合致する場合、配湯指示信号bを出力する。なお、配湯
指示信号bは演算装置8に接続されたリセットスイッチ
(図示せず)がオン操作されるまで出力が保持されるよ
うになっている。また、上記比較において、式(4)に
合致しない場合には配湯指示信号bは出力せず、溶湯保
持量Wを新たに入力して比較するようになっている。 W L = W O + W S ...... (3) determination unit 22, compares it with Haiyu instruction when holding amount W L from the holding amount calculation unit 17 to input the melt storage amount W, the following equation (4) W ≦ W L (4) If hot water distribution instruction signal b is output. The output of the hot water distribution instruction signal b is held until a reset switch (not shown) connected to the arithmetic unit 8 is turned on. Also, in the above comparison, if the equation does not match the equation (4), the hot water distribution instruction signal b is not output, and the molten metal holding amount W is newly input and compared.
以上のように構成された手元保持炉設備1の動作につ
いて説明する。The operation of the hand holding furnace equipment 1 configured as described above will be described.
まず、鋳造に先立って設定器7に鋳込重量WC,鋳造サ
イクルタイムtC,製品データdおよび湯待ち保持量デー
タWSが入力される(第4図ステップ(以下、STという)
31)と、消費率算出部18が溶湯消費率wを算出し(ST3
2)、配湯待機時間算出部19が配湯待機時間tOを算出す
る(ST33)。そして、上記各算出部18,19がそれぞれの
算出データを一旦格納するとともに、湯待ち溶湯量メモ
リ21が湯待ち保持量データWSを格納する(ST34)。First, the casting weight W C , the casting cycle time t C , the product data d, and the hot water holding amount data W S are input to the setter 7 prior to casting (step in FIG. 4 (hereinafter referred to as ST)).
31), the consumption rate calculator 18 calculates the molten metal consumption rate w (ST3).
2) The hot water distribution waiting time calculation unit 19 calculates the hot water distribution waiting time t O (ST33). Then, the respective calculation unit 18, 19 temporarily stores the respective calculated data, hot wait melt amount memory 21 stores hot water waiting holding amount data W S (ST34).
すると、配湯指示・湯待ち間重量算出部20が配湯指示
・湯待ち間重量WOを算出し(ST35)、続いて配湯指示時
保持量算出部22が配湯指示時保持量WLを算出する(ST3
6)。Then, the hot water distribution instruction / hot water wait calculating section 20 calculates the hot water distribution instruction / hot water waiting weight W O (ST35), and then the hot water distribution instruction holding quantity calculation section 22 outputs the hot water distribution instruction holding quantity W Calculate L (ST3
6).
そして、鋳造が行なわれると、保持炉2のルツボ3か
ら溶湯4が汲み出され、これに伴なって昇降シリンダ9
が作動させてレベルセンサ12が溶湯4に追従してその上
面部に接触する。この接触によって位置センサ14は位置
データaを溶湯レベル計15に出力する(ST37)。位置デ
ータaは溶湯レベルデータLPに変換されて保持量算出部
17に入力される(ST38)。Then, when the casting is performed, the molten metal 4 is drawn out from the crucible 3 of the holding furnace 2, and accordingly, the lifting cylinder 9 is moved.
Is activated, and the level sensor 12 follows the molten metal 4 and contacts the upper surface thereof. By this contact, the position sensor 14 outputs the position data a to the molten metal level meter 15 (ST37). Position data a is converted into the molten metal level data L P holding amount calculating section
Input to 17 (ST38).
溶湯レベルデータLPに基づいて溶湯保持量Wを算出し
(ST39)、この溶湯保持量WがST36で算出した配湯指示
時保持量WL以下になっているかどうか比較する(ST4
0)。ST40で“NO"と判定すると、ST37へ戻って新たな位
置データaの入力を待つ。また、ST40で“YES"と判定す
ると、配湯指示信号bを報知手段に出力する(ST41)。
報知手段はこの信号bを受けて溶湯補給すべきことを作
業者に報知する。Calculating the melt storage amount W on the basis of the molten metal level data L P (ST39), the molten metal holding amount W is compared whether it is the Haiyu following instructions when holding amount W L calculated in ST36 (ST4
0). If "NO" is determined in ST40, the process returns to ST37 and waits for input of new position data a. If "YES" is determined in ST40, hot water distribution instruction signal b is output to the notification means (ST41).
The notification means receives the signal b and notifies the worker that the molten metal should be supplied.
この報知手段の報知によって作業者は保持炉2に溶湯
4を補給する。そして、この段階で補給しておくことに
より、鋳造に伴なう汲み出しを行なった場合、あらかじ
め配湯待機時間tOが一定となるように設定してあるの
で、例えその汲み出し量(すなわち溶湯消費率wに相当
するデータ)が異なるような鋳造製品を対象にしていて
も、保持炉2の溶湯4は湯待ち保持量WS以下になるよう
なことが無い。The operator replenishes the holding furnace 2 with the molten metal 4 by the notification of the notification means. Then, by supplying at this stage, when pumping is performed in association with casting, since the hot water distribution waiting time t O is set in advance to be constant, for example, the pumping amount (that is, molten metal consumption) even data) corresponding to the rate w is intended for casting products, such as different, melt 4 of the holding furnace 2 is not such that the following water waiting retention of W S.
この結果、配湯指示信号bの出力順に配湯作業を行な
うことで、溶湯4が不足して設備停止を招いたり、ある
いは残湯を生じたりすることがなくなり、ひいては配湯
作業の平準化を図れて生産性を向上できる。As a result, by performing the hot water distribution work in the order of the output of the hot water distribution instruction signal b, the shortage of the molten metal 4 does not cause the equipment to stop or the remaining hot water does not occur. Productivity can be improved.
なお、ルツボ3の形状が異なるような場合には、この
形状に応じたデータを溶湯レベル・溶湯保持量メモリ16
に格納しておく。このように格納内容を変更設定するこ
とで仕掛け変更等により生産設備を変更した場合にも上
述と同様に対処することができる。If the shape of the crucible 3 is different, data corresponding to this shape is stored in the melt level / melt holding amount memory 16.
To be stored. By changing and setting the storage contents in this way, it is possible to cope with a case where the production equipment is changed due to a change in a mechanism or the like in the same manner as described above.
また、製品が異なるような場合には鋳込重量および鋳
造サイクルタイムの設定値を変更するだけで上述と同様
に対処することができて、汎用性が高くなる。このた
め、多種少量生産を行なうときにも流用できて設備の有
効活用が図れる。Further, when the products are different, the same measures can be taken as described above only by changing the set values of the casting weight and the casting cycle time, and the versatility is improved. For this reason, it can be diverted even when performing various kinds of small-quantity production, and the equipment can be effectively used.
なお、本実施例では説明しなかったが、W>WLとなる
ことにより自動的に配湯指示信号bをリセットするよう
にしてもよい。こうすることによりリセットスイッチの
入れ忘れによる再配湯を防止できる。Although not described in the present embodiment, the hot water distribution instruction signal b may be automatically reset when W> W L. By doing so, hot water distribution due to forgetting to turn on the reset switch can be prevented.
また、本実施例では製品データdを設定器7から入力
する場合を例にしたが、生産順序に対応付けて製品デー
タをメモリに格納しておき、生産毎に該当する製品デー
タを読出すようにしてもよい。こうすることによりその
都度入力する手間を省けて生産効率を高めることができ
る。Further, in the present embodiment, the case where the product data d is input from the setting device 7 is described as an example, but the product data is stored in the memory in association with the production order, and the corresponding product data is read for each production. It may be. By doing so, it is possible to save the trouble of inputting each time and improve the production efficiency.
(発明の効果) 以上説明したように、本発明は、溶湯消費率にあらか
じめ設定される配湯待機時間を乗算して配湯指示・湯待
ち保持量を求め、 配湯指示・湯待ち保持量にあからじめ設定される湯待
ち量を加算して基準溶湯保持量を算出し、溶湯量検出手
段が検出した溶湯量が基準溶湯保持量以下になったとき
溶湯補給の指示を行なっており、基準溶湯保持量が対象
製品毎に算出されるので、配湯待機時間と対象製品の溶
湯消費時間とを対応付ける(一致させる)ことが可能に
なり、ひいては溶湯補給完了前に湯待ち状態になるよう
なことが防止され、また、溶湯補給が早すぎて溶湯補給
回数が増加することが防止され、この結果、良好な生産
性を確保することができる。(Effects of the Invention) As described above, the present invention obtains a hot water distribution instruction / hot water holding amount by multiplying a molten metal consumption rate by a preset hot water distribution standby time, and obtains a hot water distribution instruction / hot water waiting amount. The molten metal waiting amount set in advance is added to calculate the reference molten metal holding amount, and when the molten metal amount detected by the molten metal amount detecting means becomes equal to or less than the reference molten metal holding amount, an instruction to supply the molten metal is given. Since the reference molten metal holding amount is calculated for each target product, it is possible to associate (coincide) the hot water distribution standby time with the molten metal consumption time of the target product, and eventually enter a hot water waiting state before the completion of molten metal replenishment. This is prevented, and the number of times of replenishment of the molten metal is prevented from being increased due to the premature replenishment of the molten metal. As a result, good productivity can be secured.
第1図は本発明の一実施例の手元保持炉の溶湯補給方法
が用いられる手元保持炉設備を模式的に示す図、 第2図は同手元保持炉設備の演算装置を示すブロック
図、 第3図は同保持炉設備の溶湯レベル・溶湯量メモリの格
納内容を示す特性図、 第4図は同保持炉設備の動作例を示すフローチャートで
ある。 1……手元保持炉設備、2……保持炉、4……溶湯、5
……制御装置、6……溶湯量検出装置、8……演算装
置。FIG. 1 is a diagram schematically showing a hand holding furnace equipment in which a method for replenishing molten metal in a hand holding furnace according to one embodiment of the present invention is used. FIG. 2 is a block diagram showing an arithmetic unit of the hand holding furnace equipment. FIG. 3 is a characteristic diagram showing the stored contents of the molten metal level and molten metal amount memory of the holding furnace equipment, and FIG. 4 is a flowchart showing an operation example of the holding furnace equipment. 1 ... hand holding furnace equipment, 2 ... holding furnace, 4 ... molten metal, 5
... Control device, 6 ... Molten metal amount detection device, 8 ... Calculation device.
Claims (1)
手段と、各種データを入力・設定する設定器および前記
溶湯量検出手段に接続して前記設定器の設定データおよ
び前記溶湯量検出手段の検出データに応じて演算処理す
る演算手段と、を有する制御装置を用い、 鋳造製品の1回当りの汲み出し量を鋳造サイクルタイム
で除算して溶湯消費率を求め、 該溶湯消費率にあらかじめ設定される配湯待機時間を乗
算して配湯指示・湯待ち保持量を求め、 配湯指示・湯持ち保持量にあらかじめ設定される湯待ち
量を加算して基準溶湯保持量を算出し、 前記溶湯量検出手段が検出した溶湯量が前記基準溶湯保
持量以下になったとき溶湯補給の指示を行なうことを特
徴とする手元保持炉の溶湯補給方法。1. A molten metal amount detecting means for detecting the molten metal amount of a holding furnace, a setter for inputting and setting various data, and a set data connected to the molten metal amount detecting means and setting data of the setter and the molten metal amount detection. Using a control device having an arithmetic means for performing arithmetic processing in accordance with the detection data of the means, and calculating a molten metal consumption rate by dividing a pumping amount per casting product by a casting cycle time. Multiply the set hot water distribution waiting time to obtain a hot water distribution instruction / hot water holding amount, calculate a reference molten metal holding amount by adding a preset hot water waiting amount to the hot water distribution instruction / hot water holding amount, A molten metal replenishing method for a hand holding furnace, wherein a molten metal replenishment instruction is issued when the molten metal amount detected by the molten metal amount detecting means is equal to or less than the reference molten metal holding amount.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6409589A JP2725353B2 (en) | 1989-03-16 | 1989-03-16 | How to replenish molten metal in the holding furnace |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6409589A JP2725353B2 (en) | 1989-03-16 | 1989-03-16 | How to replenish molten metal in the holding furnace |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH02241668A JPH02241668A (en) | 1990-09-26 |
JP2725353B2 true JP2725353B2 (en) | 1998-03-11 |
Family
ID=13248174
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6409589A Expired - Fee Related JP2725353B2 (en) | 1989-03-16 | 1989-03-16 | How to replenish molten metal in the holding furnace |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2725353B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2643651B2 (en) * | 1991-04-18 | 1997-08-20 | 日立金属株式会社 | Automatic hot water distribution device |
-
1989
- 1989-03-16 JP JP6409589A patent/JP2725353B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH02241668A (en) | 1990-09-26 |
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