JPH08290261A - Method and device for automatic metal pouring - Google Patents
Method and device for automatic metal pouringInfo
- Publication number
- JPH08290261A JPH08290261A JP9360695A JP9360695A JPH08290261A JP H08290261 A JPH08290261 A JP H08290261A JP 9360695 A JP9360695 A JP 9360695A JP 9360695 A JP9360695 A JP 9360695A JP H08290261 A JPH08290261 A JP H08290261A
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- ladle
- mold
- bottom outlet
- protrusion
- 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
Landscapes
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、自動注湯方法及びその
装置に関し、特に、取鍋の底部流出口を封止して溶湯を
保持し、底部流出口を開放して溶湯を下に位置する鋳型
の注入口に注入する自動注湯方法及びその装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic pouring method and an apparatus therefor, and in particular, it holds a molten metal by sealing the bottom outlet of a ladle and opens the bottom outlet to position the molten metal downward. The present invention relates to an automatic pouring method and apparatus for pouring into an injection port of a casting mold.
【０００２】[0002]
【従来の技術】鋳造工場においては、高品質でしかも生
産性良く鋳物を生産する要求から、多くの自動注湯方法
及びその装置が導入、実用化されている。そのうち、取
鍋の底部流出口を封止して溶湯を保持し、前記底部流出
口を開放して溶湯を下に位置する鋳型の注入口に注入す
るものとしてストッパー式自動注湯装置がある。図２
は、従来例のストッパー式自動注湯装置を示す要部断面
図である。図２で、取鍋１の底部に底部流出口２を形成
し、その直上にストッパーロッド３を配置し、このスト
ッパーロッド３を下降して底部流出口２を閉止した状態
で溶湯７を保持し、次いでストッパーロッド３を上昇し
て底部流出口２を開放して、溶湯７を鋳型４の注入口５
へ注湯するものである。2. Description of the Related Art In a foundry, many automatic pouring methods and apparatus have been introduced and put into practical use in order to produce castings with high quality and high productivity. Among them, there is a stopper-type automatic pouring device for sealing the bottom outlet of the ladle to hold the molten metal, and opening the bottom outlet to inject the molten metal into the inlet of the mold located below. Figure 2
[FIG. 7] is a sectional view of essential parts showing a conventional stopper-type automatic pouring device. In FIG. 2, a bottom outlet 2 is formed on the bottom of a ladle 1, a stopper rod 3 is arranged immediately above it, and this stopper rod 3 is lowered to hold the molten metal 7 in a state where the bottom outlet 2 is closed. Then, the stopper rod 3 is raised to open the bottom outlet port 2, and the molten metal 7 is poured into the casting port 5 of the mold 4.
Is to pour water into.
【０００３】鋳型内キャビティ（図示せず）への注湯量
の制御は、注入口５を満たす湯面９をセンサ１０により
監視する等して行う。この場合、鋳型キャビティ内への
溶湯の注入量（「湯呑み」という）は、製品キャビティ
や湯口、湯道、押湯、堰などの鋳造方案によってかなり
異なるため、鋳造する品種ごとに注湯のパターンも変え
る必要があり、高精度な注湯の制御が必要とされる。The amount of molten metal poured into the cavity (not shown) in the mold is controlled by monitoring the molten metal surface 9 filling the injection port 5 with a sensor 10. In this case, the amount of molten metal injected into the mold cavity (referred to as "cup") varies considerably depending on the casting method such as the product cavity, gate, runner, riser, and weir. Also needs to be changed, and high-precision pouring control is required.
【０００４】高精度な注湯の制御が行われず、鋳型キャ
ビティ内への湯呑みを上回って注湯を行った場合には、
溶湯が鋳型４上に溢れてしまい、逆に鋳型キャビティ内
への湯呑みを下回る注湯を行った場合は、前記湯口５を
満たす湯面９が低下し、溶湯ヘッドが減少するため湯境
不良などが発生しやすい。When the pouring is not controlled with high accuracy and the pouring is performed in excess of the amount of water poured into the mold cavity,
When the molten metal overflows on the mold 4 and the amount of molten metal poured into the mold cavity is less than the amount of the molten metal, the level of the molten metal 9 filling the sprue 5 is lowered, and the molten metal head is reduced. Is likely to occur.
【０００５】以上のようなストッパー式自動注湯装置の
欠点を解決するものとして、実公昭６２−２９１７７号
公報には、ストッパー式取鍋または鋳型のどちらか一方
を垂直に移動して、分離部材を介して互いに接触した状
態で注湯を行う自動注湯装置の開示がある。この実公昭
６２−２９１７７号公報の自動注湯装置は、図３に示す
ように、取鍋５１を備え、その取鍋５１の底部流出口５
２にはストッパーロッド５３が配置され、そのストッパ
ーロッド５３により前記底部流出口５２が開閉される。
また、鋳型５４への溶湯の注入口５５には耐熱性を有す
る分離部材６４を取り付けている。更に、取鍋５１は担
持フレーム５８上に固定され、この担持フレーム５８は
鋳型５４の両側に配置された昇降シリンダ５９のピスト
ン６０に支持され、担持フレーム５８は昇降シリンダ５
９の動作により垂直方向に上下動される。In order to solve the above-mentioned drawbacks of the stopper type automatic pouring device, Japanese Utility Model Publication No. 62-29177 discloses a stopper member ladle or a mold which is vertically moved to separate a separating member. There is a disclosure of an automatic pouring device that pours molten metal in contact with each other via a pipe. As shown in FIG. 3, the automatic pouring device of Japanese Utility Model Publication No. 62-29177 includes a ladle 51, and a bottom outlet 5 of the ladle 51.
A stopper rod 53 is arranged at 2, and the bottom outlet 52 is opened and closed by the stopper rod 53.
A heat-resistant separating member 64 is attached to the molten metal injection port 55 into the mold 54. Further, the ladle 51 is fixed on the carrying frame 58, and the carrying frame 58 is supported by the pistons 60 of the lifting cylinders 59 arranged on both sides of the mold 54.
It is vertically moved by the operation of 9.
【０００６】[0006]
【発明が解決しようとする課題】実公昭６２−２９１７
７号公報のものは、取鍋５１全体若しくは鋳型５４全体
を上下させる必要があり、そのために担持フレーム５
８、昇降シリンダ５９、フレーム部分６１等からなる大
掛かりな昇降機構が必要となる。また、取鍋５１の底部
流出口５２と鋳型５４の溶湯注入口５５との間に分離部
材６４を介する必要があるが、このような分離部材６４
は定期的に交換する必要があり、生産コストを高める要
因にもなる。[Problems to be Solved by the Invention] JP-B-62-1917
In the case of the publication No. 7, it is necessary to move the entire ladle 51 or the entire mold 54 up and down, and therefore the carrying frame 5
A large-scale elevating mechanism composed of 8, an elevating cylinder 59, a frame portion 61 and the like is required. Further, a separating member 64 needs to be interposed between the bottom outlet 52 of the ladle 51 and the molten metal inlet 55 of the mold 54.
Must be replaced on a regular basis, which also increases production costs.
【０００７】このような課題を改善するため、本願発明
者等は、特開平６−２８５６１６号公報として、取鍋の
底部流出口に溶湯充填位置に配置した鋳型の注入口に向
けて配置したスライドノズルにより、取鍋内溶湯を鋳型
キャビティ内に注入する自動注湯方法及びその装置を開
示した。この特開平６−２８５６１６号公報の自動注湯
装置は、実施例として図４に示すように、取鍋１の底部
流出口の突出部１２と、これに僅かな間隙をもって摺動
するスライドノズル１３を有し、このスライドノズル１
３が鋳型４の注入口５と接近、離反を行う。特開平６−
２８５６１６号公報によれば、取鍋１、鋳型４の双方と
も移動することはなく、装置全体と比較してかなり小さ
なスライドノズル１３を僅かに摺動するだけでよいの
で、前記の実公昭６２−２９１７７号公報のように取鍋
１を昇降させる大掛かりな機構が不要となる。また、鋳
型４に漏斗状開口部５を設ける必要もなく、溶湯の鋳型
４への注入歩留が向上する。更に、底部流出口２と鋳型
キャビティとが突出部１２及びスライドノズル１３を介
して溶湯通路を形成するため、エネルギー損失や、乱流
による空気の巻き込みが少なく湯流れ及び品質の向上を
図ることができる。In order to solve such a problem, the inventors of the present application, as disclosed in Japanese Unexamined Patent Publication No. HEI 6-285616, have a slide placed at the bottom outlet of a ladle, facing a casting inlet of a mold placed at a molten metal filling position. Disclosed is an automatic pouring method and apparatus for pouring molten metal in a ladle into a mold cavity by means of a nozzle. As shown in FIG. 4 as an embodiment, the automatic pouring device disclosed in Japanese Unexamined Patent Publication No. 6-285616 has a protrusion 12 at the bottom outlet of the ladle 1 and a slide nozzle 13 that slides with a slight gap therebetween. With this slide nozzle 1
3 approaches and separates from the injection port 5 of the mold 4. JP-A-6-
According to Japanese Patent No. 285616, both the ladle 1 and the mold 4 do not move, and only a small slide nozzle 13 which is considerably smaller than the entire apparatus needs to slide slightly. A large-scale mechanism for raising and lowering the ladle 1 as in Japanese Patent No. 29177 is unnecessary. Further, it is not necessary to provide the mold 4 with the funnel-shaped opening 5, and the injection yield of the molten metal into the mold 4 is improved. Furthermore, since the bottom outlet 2 and the mold cavity form a molten metal passage through the protrusion 12 and the slide nozzle 13, energy loss and air entrainment due to turbulence are reduced, and the molten metal flow and quality can be improved. it can.
【０００８】しかし、特開平６−２８５６１６号公報の
自動注湯方法及びその装置でも、取鍋１からの溶湯７の
流出量が鋳型キャビティの湯呑み量を上回ることがあ
り、このため突出部１２とスライドノズル１３間の僅か
な隙間に溶湯７が浸入し、スライドノズル１３が摺動不
能になるという課題がある。However, even in the automatic pouring method and apparatus thereof disclosed in Japanese Patent Laid-Open No. 6-285616, the amount of molten metal 7 flowing out of the ladle 1 may exceed the amount of drinking in the mold cavity. There is a problem that the molten metal 7 penetrates into a slight gap between the slide nozzles 13 and the slide nozzles 13 cannot slide.
【０００９】そこで、本願発明者等は、特願平６−８４
７４号として、底部流出口２の突出部１２とスライドノ
ズル１３間の僅かの隙間に外部より圧縮気体１７を供給
し、この間隙への溶湯の浸入を防止する自動注湯装置を
出願した。しかしながら、突出部１２とスライドノズル
１３の隙間に供給する気体の圧力が、この部位にかかる
溶湯の圧力を大きく上回った場合は、図５に示すように
取鍋１内に供給した気体１７が気泡１８となって吹き上
がることがある。このような現象が生ずると、取鍋１か
ら流出する溶湯量も減少し、注湯時間が著しく延長する
とともに、溶湯の酸化が促進され、鋳造する鋳物品質の
低下につながる。Therefore, the inventors of the present application filed Japanese Patent Application No. 6-84.
No. 74 filed an automatic pouring device for supplying compressed gas 17 from the outside to a slight gap between the projection 12 of the bottom outlet 2 and the slide nozzle 13 to prevent the molten metal from entering the gap. However, when the pressure of the gas supplied to the gap between the protruding portion 12 and the slide nozzle 13 greatly exceeds the pressure of the molten metal applied to this portion, the gas 17 supplied into the ladle 1 is bubbled as shown in FIG. It may become 18 and blow up. When such a phenomenon occurs, the amount of molten metal flowing out from the ladle 1 is reduced, the pouring time is remarkably extended, the oxidation of the molten metal is promoted, and the quality of the casting to be cast is deteriorated.
【００１０】図６（ａ）は、突出部１２とスライドノズ
ル１３間の隙間へ気体を供給した場合の、溶湯７が正常
に鋳型キャビティ内に注入されている状態を示し、取鍋
１より流出する溶湯流線８が底部流出口の突出部１２の
管内を満たして流れ、取鍋１内の湯面高さに加え突出部
１２の長さの分だけの溶湯ヘッド（ｈａ）が加わってい
る。一方、図６（ｂ）は、突出部１２とスライドノズル
１３間の隙間へ供給する気体の圧力が過剰な場合に起こ
りやすい状態を示し、突出部１２内には空洞部１９が生
し、溶湯ヘッドは取鍋１内の湯面から空洞部１９が始ま
る位置の（ｈｂ）しかない。FIG. 6A shows a state where the molten metal 7 is normally injected into the mold cavity when gas is supplied to the gap between the protrusion 12 and the slide nozzle 13, and flows out from the ladle 1. The molten metal flow line 8 flows to fill the pipe of the protrusion 12 at the bottom outlet, and the molten metal head (ha) is added by the length of the protrusion 12 in addition to the height of the molten metal in the ladle 1. . On the other hand, FIG. 6 (b) shows a state that is likely to occur when the pressure of the gas supplied to the gap between the protrusion 12 and the slide nozzle 13 is excessive. A cavity 19 is formed in the protrusion 12 and molten metal is generated. The head is only at the position (hb) where the cavity 19 starts from the surface of the molten metal in the ladle 1.
【００１１】ところで、自由落下する液体の流線は、上
から下にいくほど細くなる。そして、突出部１２の管内
における溶湯の流れが、図６（ａ）になる状態のは例外
的で、殆どは図６（ｂ）の空洞部１９が発生した状態に
なる。従って、突出部１２の管内を単に円筒にしたのみ
では、突出部１２とスライドノズル１３間に供給した気
体が取鍋１内の溶湯湯面に吹き上がることが多い。By the way, the streamline of the liquid that freely falls becomes thinner from the top to the bottom. The flow of the molten metal in the pipe of the protrusion 12 is exceptional in the state shown in FIG. 6 (a), and most of the state is the state in which the cavity 19 of FIG. 6 (b) has been generated. Therefore, the gas supplied between the protrusion 12 and the slide nozzle 13 often blows up to the surface of the molten metal in the ladle 1 by simply making the inside of the pipe of the protrusion 12 a cylinder.
【００１２】更に、図７（ａ）及び図７（ｂ）に示すよ
うに、取鍋１内からの注湯の進行につれて取鍋１内の溶
湯６の量が減少し、それにつれて溶湯ヘッドも減少す
る。このため、注湯初期において供給する気体１７の圧
力が、溶湯ヘッド（ｈ１）を上回っていなくても、注湯
後期では溶湯ヘッドが（ｈ２）になって、圧縮気体１７
の圧力を下回り、気体１７が気泡１８として吹き上が
る。そして、取鍋１から流出する溶湯量も減少し、注湯
時間が著しく延長するとともに、溶湯の酸化が促進さ
れ、鋳造する鋳物品質の低下につながる。Further, as shown in FIGS. 7 (a) and 7 (b), the amount of the molten metal 6 in the ladle 1 decreases as the pouring of the molten metal from the inside of the ladle 1 progresses, and the molten metal head also rises accordingly. Decrease. Therefore, even if the pressure of the gas 17 supplied at the beginning of pouring is not higher than that of the molten head (h1), the molten head becomes (h2) at the latter stage of pouring, and the compressed gas 17
And the gas 17 blows up as bubbles 18. Then, the amount of molten metal flowing out from the ladle 1 is also reduced, the pouring time is significantly extended, the oxidation of the molten metal is promoted, and the quality of the casting to be cast is deteriorated.
【００１３】本発明は、上記従来の課題を解決し、取鍋
の底部流出口を閉止して溶湯を保持し、底部流出口を開
放して溶湯を下に位置する鋳型の注入口に注入する自動
注湯方法及びその装置において、底部流出口に延設する
突出部とこれに僅かの隙間をもって嵌合摺動するスライ
ドノズル間に供給する気体が、気泡として注湯中の溶湯
に浸入することなく、取鍋からの注湯量及び注湯時間を
安定させ、溶湯の酸化を防止して、高品質の鋳物を鋳造
できる自動注湯方法及びその装置を提供することを目的
とする。The present invention solves the above-mentioned problems of the prior art by closing the bottom outlet of the ladle to hold the molten metal, and opening the bottom outlet to inject the molten metal into the inlet of the mold located below. In the automatic pouring method and its apparatus, the gas supplied between the protruding portion extending to the bottom outlet and the slide nozzle that fits and slides with a slight gap into the protruding portion should enter the molten metal as bubbles. It is an object of the present invention to provide an automatic pouring method and apparatus capable of stabilizing a pouring amount and pouring time from a ladle, preventing the molten metal from being oxidized, and casting a high quality casting.
【００１４】[0014]
【課題を解決するための手段】上記課題を解決するた
め、本発明の自動注湯方法は、（１）取鍋の底部流出口
を閉止して前記取鍋内に溶湯を保持する工程、（２）前
記底部流出口の下部に鋳型の注入口を配置する工程、
（３）前記取鍋の底部流出口に延設する管路の内部をそ
の上部から下部に向かい次第に絞る突出部とし、この突
出部に僅かな間隙を持ち嵌合するスライドノズルを伸長
し、スライドノズルの下端と鋳型の注入口を接近させて
取鍋と鋳型キャビティとを連通する工程、（４）取鍋の
底部流出口を開放して、取鍋内溶湯を記鋳型キャビティ
内に充填する工程、（５）取鍋内溶湯を鋳型内に充填す
るのに連動して、前記突出部とスライドノズル間の間隙
に、間隙に加わる圧力に応じて制御しつつ外部より圧縮
気体を供給する工程、（６）鋳型キャビティ内に溶湯が
充填された後に、前記取鍋の底部流出口を閉止して取鍋
内からの溶湯の流出を停止する工程、（７）スライドノ
ズルを鋳型の注入口から離反させる工程、（８）鋳型キ
ャビティ内に溶湯が充填された後、取鍋または鋳型を移
動する工程、（９）鋳型キャビティ内に溶湯が充填され
ていない新たな鋳型を溶湯充填位置に配置する工程、少
なくとも以上（１）〜（９）の工程の組み合せからな
り、その工程を反復して行うことを特徴とする。In order to solve the above problems, the automatic pouring method of the present invention comprises: (1) closing the bottom outlet of the ladle to hold the molten metal in the ladle; 2) disposing an injection port of the mold under the bottom outlet,
(3) The inside of the pipe extending to the bottom outlet of the ladle is formed as a projecting part that gradually narrows from its upper part to its lower part, and a slide nozzle that fits with a slight gap in this projecting part is extended and slid. A step of bringing the lower end of the nozzle and the injection port of the mold close to each other to communicate the ladle and the mold cavity, (4) a step of opening the bottom outlet of the ladle and filling the molten metal in the ladle into the mold cavity (5) A step of supplying compressed gas from the outside to the gap between the projecting portion and the slide nozzle while controlling it according to the pressure applied to the gap, interlocking with filling the molten metal in the ladle into the mold, (6) After the molten metal is filled in the mold cavity, the bottom outlet of the ladle is closed to stop the molten metal from flowing out of the ladle. (7) The slide nozzle is separated from the casting port of the mold. (8) Molten metal in the mold cavity After being filled, the step of moving the ladle or the mold, (9) the step of arranging a new mold not filled with the melt in the mold cavity at the melt filling position, at least the above steps (1) to (9) And the process is repeated.
【００１５】そして、本発明の自動注湯装置は、取鍋の
底部流出口を封止して溶湯を保持し、前記底部流出口を
開放して溶湯を下に位置する鋳型の注入口に注入する自
動注湯装置において、前記底部流出口の下部に延設して
内部を上部から下部に向かい次第に絞る管路を有する突
出部と、該突出部に僅かな間隙を持ち嵌合して伸縮する
スライドノズルと、前記取鍋内溶湯を鋳型内に充填する
のに連動して、前記僅かな間隙に加わる溶湯圧力に応じ
て気体を送る圧力制御手段と、からなることを特徴とす
る。In the automatic pouring apparatus of the present invention, the bottom outlet of the ladle is sealed to hold the molten metal, and the bottom outlet is opened to inject the molten metal into the inlet of the mold located below. In the automatic pouring device, a protruding portion is provided which extends below the bottom outlet and has a pipe line that gradually narrows the inside from the upper portion to the lower portion, and the protruding portion is fitted with a slight gap to expand and contract. It is characterized by comprising a slide nozzle and pressure control means for feeding gas in accordance with the molten metal pressure applied to the slight gap in association with filling the molten metal in the ladle into the mold.
【００１６】[0016]
【作用】取鍋の底部流出口に延設する管路の内部をその
上部から下部に向かい次第に絞る突出部とすると、上か
ら下にいくほど細くなり自由落下する溶湯の流線が、突
出部の管内に沿うため、溶湯の流線と突出部の管内との
間に空洞部が発生しない。また、取鍋内溶湯を鋳型内に
充填するに従い、漸次減少する溶湯圧力に応じて突出部
とスライドノズル間の間隙に外部より圧縮気体を供給す
ると、更に突出部の管内に空洞部を生じさせないと共
に、この間隙への溶湯の浸入防止と取鍋内湯面への溶湯
の吹き出しを防止する。[Function] If the inside of the pipe line extending to the bottom outlet of the ladle is a projecting part that gradually narrows from its upper part to its lower part, the streamline of the molten metal that becomes thinner from the top to the bottom and falls freely is the projecting part. Since it follows the inside of the pipe, there is no cavity between the streamline of the molten metal and the inside of the pipe of the protruding portion. Further, as the molten metal in the ladle is filled in the mold, if a compressed gas is supplied from the outside to the gap between the projecting portion and the slide nozzle in accordance with the molten metal pressure that gradually decreases, a cavity is not formed in the pipe of the projecting portion. At the same time, the molten metal is prevented from entering the gap and the molten metal is prevented from being blown out onto the surface of the ladle.
【００１７】[0017]
【実施例】以下、本発明を詳細に説明する。図１は本発
明の一実施例の自動注湯装置を示す断面図である。シリ
ンダ１１ａにより外径６０ｍｍのストッパーロッド３を
下降して、取鍋１の内径４０ｍｍの底部流出口２を閉止
して溶湯７を保持し、シリンダ１１ａによりストッパー
ロッド３を上昇し、底部流出口２を開放して溶湯７を下
に位置する鋳型５の注入口４に注入する自動注湯装置で
ある。底部流出口２の下部には、これに延設して内部を
上部から下部に向かい内径４０ｍｍから３８ｍｍと次第
に絞る管路で長さ２８０ｍｍの突出部１２と、この突出
部１２に半径０．３ｍｍの僅かな間隙を持ち嵌合してシ
リンダ１１ｂにより伸縮するスライドノズル１３と、取
鍋１内の溶湯７を鋳型５内に充填するのに連動して、僅
かな間隙に加わる溶湯圧力に応じて０．１〜１．０ｋｇ
ｆ／ｍｍ2 の範囲で制御できる圧縮気体を送る圧力制御
手段１７とからなる。突出部１２とスライドノズル１３
間の間隙は、注湯時の突出部５とスライドノズル１３の
熱膨張量を考慮し、スライドノズル１３が摺動可能な範
囲で決定している。The present invention will be described in detail below. FIG. 1 is a sectional view showing an automatic pouring device according to an embodiment of the present invention. The cylinder 11a lowers the stopper rod 3 having an outer diameter of 60 mm to close the bottom outlet 2 having an inner diameter of 40 mm of the ladle 1 to hold the molten metal 7, and the cylinder 11a raises the stopper rod 3 to lift the bottom outlet 2 Is an automatic pouring device for opening the mold and pouring the molten metal 7 into the pouring port 4 of the mold 5 located below. At the lower part of the bottom outlet port 2, a projection part 12 having a length of 280 mm and a radius of 0.3 mm is formed on the projection part 12 by a pipe line extending from this to narrow the inside from the upper part to the lower part and gradually reducing the inner diameter from 40 mm to 38 mm. The slide nozzle 13 that fits with a slight gap and expands and contracts by the cylinder 11b and the molten metal 7 in the ladle 1 are interlocked with filling the mold 5 in accordance with the molten metal pressure applied to the slight gap. 0.1-1.0 kg
The pressure control means 17 sends a compressed gas which can be controlled in the range of f / mm 2 . Projection 12 and slide nozzle 13
The gap between them is determined within a range in which the slide nozzle 13 can slide in consideration of the thermal expansion amount of the protrusion 5 and the slide nozzle 13 during pouring.
【００１８】次に、実施例の自動注湯装置を用いて鋳造
を行う方法を説明する。先ず、（１）シリンダ１１ａに
よりストッパーロッド３を下降して取鍋１の底部流出口
２を閉止し、取鍋１内に１回分の注入重量の４２ｋｇ、
１３８０〜１４２０℃の球状黒鉛鋳鉄からなる溶湯７を
充填し、溶湯温度を保持する。次に（２）底部流出口２
の下部に鋳型５の注入口４がくるように配置す。次に、
（３）底部流出口２に延設する突出部１２に僅かな間隙
を持ち嵌合するスライドノズル１３を伸長させ、スライ
ドノズル１３の下端と鋳型５の注入口４を接近させて取
鍋４と鋳型キャビティとを連通させる。次に、（４）シ
リンダ１１ａによりストッパーロッド３を上昇して取鍋
１の底部流出口２を開放し、取鍋１内溶湯７を鋳型キャ
ビティ内に充填する。このとき、（５）取鍋１内溶湯７
が鋳型キャビティ内に充填するのに連動して、突出部１
２とスライドノズル１３間の間隙に、間隙に加わる圧力
に応じて、注湯初期は０．３５ｋｇｆ／ｍｍ2 、注湯後
期の６秒後は０．１５ｋｇｆ／ｍｍ2 に制御しつつ外部
より窒素ガス１７を供給する。必要に応じ、（６）鋳型
キャビティ内に溶湯７が充填された後に、シリンダ１１
ａによりストッパーロッド３を下降して取鍋１の底部流
出口を閉止し、取鍋１内からの溶湯７の流出を停止す
る。次いで、（７）シリンダ１１ｂによりスライドノズ
ル１３を上昇させて鋳型５の注入口４から離反させる。
次に、（８）鋳型キャビティ内に溶湯７が充填された
後、取鍋１または鋳型５を移動する。更に、（９）鋳型
キャビティ内に溶湯が充填されていない新たな鋳型５を
溶湯充填位置に配置する。少なくとも以上の工程を反復
して行う。Next, a method of casting using the automatic pouring device of the embodiment will be described. First, (1) the stopper rod 3 is lowered by the cylinder 11a to close the bottom outlet 2 of the ladle 1, and 42 kg of the injection weight for one injection into the ladle 1,
The molten metal 7 made of spheroidal graphite cast iron at 1380 to 1420 ° C. is filled and the molten metal temperature is maintained. Next (2) Bottom outlet 2
It is arranged so that the injection port 4 of the mold 5 is located at the lower part of. next,
(3) The slide nozzle 13 that fits into the protruding portion 12 extending to the bottom outlet 2 with a slight gap is extended, and the lower end of the slide nozzle 13 and the injection port 4 of the mold 5 are brought close to each other to form the ladle 4. Communicate with the mold cavity. Next, (4) the cylinder 11a raises the stopper rod 3 to open the bottom outlet 2 of the ladle 1 and fill the molten metal 7 in the ladle 1 into the mold cavity. At this time, (5) molten metal 7 in ladle 1
Interlocking with the filling of the mold cavity into the protrusion 1
The gap between 2 and the slide nozzle 13, depending on the pressure applied to the gap, pouring initially 0.35kgf / mm 2, pouring late after 6 seconds of nitrogen from the outside while controlling the 0.15kgf / mm 2 The gas 17 is supplied. If necessary, (6) after the molten metal 7 is filled in the mold cavity, the cylinder 11
By a, the stopper rod 3 is lowered to close the bottom outlet of the ladle 1, and the outflow of the molten metal 7 from the inside of the ladle 1 is stopped. Next, (7) the cylinder 11b raises the slide nozzle 13 to separate it from the injection port 4 of the mold 5.
Next, (8) after the molten metal 7 is filled in the mold cavity, the ladle 1 or the mold 5 is moved. Further, (9) a new mold 5 in which the mold cavity is not filled with the melt is placed at the melt filling position. At least the above steps are repeated.
【００１９】上記実施例において、取鍋１の底部流出口
２に延設する突出部１２の管路内部をその上部から下部
に向かい次第に絞っているので、上から下にいくほど細
くなり自由落下する溶湯７の流線が突出部１２の管内に
沿い、溶湯７の流線と突出部１２の管内との間には空洞
部が発生しない。また、取鍋１内溶湯７を鋳型５内に充
填するに従い漸次溶湯圧力が減少するが、この溶湯圧力
の減少に応じて突出部１２とスライドノズル１３間の間
隙に圧縮気体１７を供給しているので、突出部１２の管
内に空洞部が生じないと共に、間隙へ溶湯７が浸入せ
ず、取鍋１内の湯面へ圧縮空気が気泡として吹き出すこ
とがない。圧縮気体として不活性ガスを使用すれば、更
に溶湯の酸化が防止される。実施例の自動注湯装置を用
いて鋳造を行えば、取鍋からの注湯量及び注湯時間が安
定し、溶湯の酸化を防止して、高品質の鋳物が鋳造でき
る。In the above embodiment, the inside of the pipe of the protruding portion 12 extending to the bottom outlet 2 of the ladle 1 is gradually narrowed from its upper portion to its lower portion, so that it becomes thinner from the upper side to the lower side and falls freely. The streamline of the molten metal 7 runs along the inside of the pipe of the protruding portion 12, and no cavity is formed between the streamline of the melt 7 and the inside of the pipe of the protruding portion 12. Further, the molten metal pressure gradually decreases as the molten metal 7 in the ladle 1 is filled in the mold 5, but the compressed gas 17 is supplied to the gap between the protrusion 12 and the slide nozzle 13 in accordance with the decrease in the molten metal pressure. Therefore, the hollow portion is not formed in the pipe of the protruding portion 12, the molten metal 7 does not enter the gap, and the compressed air does not blow out to the molten metal surface in the ladle 1 as bubbles. If an inert gas is used as the compressed gas, the oxidation of the molten metal is further prevented. If casting is performed using the automatic pouring device of the embodiment, the pouring amount and pouring time from the ladle are stable, oxidation of the molten metal is prevented, and high quality castings can be cast.
【００２０】[0020]
【発明の効果】以上、詳細に説明の通り、本発明の自動
注湯方法及びその装置は、取鍋の底部流出口に延設する
管路の内部をその上部から下部に向かい次第に絞る突出
部しているので、上から下にいくほど細くなり自由落下
する溶湯の流線が突出部の管内に沿い、溶湯の流線と突
出部の管内との間に空洞部が発生しない。また、取鍋内
溶湯を鋳型内に充填するに従い漸次減少する溶湯圧力に
応じて、突出部とスライドノズル間の間隙に外部より圧
縮気体を供給するので、更に突出部の管内に空洞部を生
じさせないと共に、この間隙への溶湯の浸入防止と取鍋
内湯面への溶湯の吹き出しを防止する。そして、取鍋か
らの注湯量及び注湯時間を安定させ、溶湯の酸化を防止
して、高品質の鋳物が鋳造できる。As described above in detail, the automatic pouring method and apparatus according to the present invention are such that the inside of the pipe extending to the bottom outlet of the ladle is gradually squeezed from the upper part to the lower part. As a result, the streamline of the molten metal, which becomes thinner from the top to the bottom and falls freely, follows the inside of the pipe of the protruding portion, and no cavity is formed between the streamline of the molten metal and the inside of the pipe of the protruding portion. In addition, compressed gas is supplied from the outside to the gap between the protrusion and the slide nozzle in accordance with the molten metal pressure that gradually decreases as the molten metal in the ladle is filled into the mold, and thus a cavity is created in the pipe of the protrusion. In addition, it prevents the intrusion of the molten metal into this gap and prevents the molten metal from blowing out onto the surface of the ladle. Then, the pouring amount and pouring time from the ladle can be stabilized, oxidation of the molten metal can be prevented, and high quality casting can be cast.
【図１】本発明の一実施例の自動注湯装置を示す断面図
である。FIG. 1 is a sectional view showing an automatic pouring device according to an embodiment of the present invention.
【図２】従来例の自動注湯装置を示す要部断面図であ
る。FIG. 2 is a cross-sectional view of essential parts showing a conventional automatic pouring device.
【図３】実公昭６２−２９１７７号公報に開示する自動
注湯装置の要部断面図である。FIG. 3 is a sectional view of an essential part of the automatic pouring device disclosed in Japanese Utility Model Publication No. 62-29177.
【図４】特開平６−２８５６１６号公報に開示する自動
注湯装置の実施例の要部断面図である。FIG. 4 is a sectional view of an essential part of an embodiment of an automatic pouring device disclosed in Japanese Patent Laid-Open No. 6-285616.
【図５】突出部とスライドノズルの隙間に供給する気体
の圧力が溶湯の圧力を大きく上回った場合に気泡として
吹き上がることを説明する図である。FIG. 5 is a diagram for explaining that when the pressure of the gas supplied to the gap between the protrusion and the slide nozzle greatly exceeds the pressure of the molten metal, it blows up as bubbles.
【図６】突出部とスライドノズル間の隙間へ気体を供給
した場合の、（ａ）は溶湯が正常に鋳型キャビティ内に
注入されている状態を示し、（ｂ）は、隙間へ供給する
気体が気泡となる状態を示す概念図である。6A and 6B show a state in which a molten metal is normally injected into a mold cavity when gas is supplied to a gap between a protrusion and a slide nozzle, and FIG. 6B is a gas supplied to the gap. It is a conceptual diagram which shows the state which becomes a bubble.
【図７】取鍋内からの注湯の進行につれての溶湯ヘッド
の変化の状態で、（ａ）は注湯初期、（ｂ）は注湯後期
を示す。FIG. 7 shows a state in which the molten metal head changes with the progress of pouring from the inside of the ladle, (a) showing the initial stage of pouring, and (b) showing the latter stage of pouring.
１：取鍋、 ２：底部流出口、
３：ストッパーロッド、４：鋳型、
５：注入口、 ６：取鍋内湯面、７：溶湯、
８：溶湯流線、 ９：鋳型注
入口湯面、１０：センサ、 １１：シリン
ダ、 １２：突出部、１３：スライドノズル、
１４：フレーム、 １５：支柱、１６：ローラ
ーコンベア、 １７：圧縮気体、 １８：気泡、
１９：空洞部、 ２０：突出部管路。1: ladle, 2: bottom outlet,
3: Stopper rod, 4: Mold,
5: inlet, 6: ladle internal surface, 7: molten metal,
8: Molten metal stream line, 9: Molten metal inlet surface, 10: Sensor, 11: Cylinder, 12: Projection part, 13: Slide nozzle,
14: Frame, 15: Support, 16: Roller conveyor, 17: Compressed gas, 18: Bubble,
19: hollow part, 20: projecting part pipeline.
Claims (2)
鍋内に溶湯を保持する工程、（２）前記底部流出口の下
部に鋳型の注入口を配置する工程、（３）前記取鍋の底
部流出口に延設する管路の内部をその上部から下部に向
かい次第に絞る突出部とし、この突出部に僅かな間隙を
持ち嵌合するスライドノズルを伸長し、スライドノズル
の下端と鋳型の注入口を接近させて取鍋と鋳型キャビテ
ィとを連通する工程、（４）取鍋の底部流出口を開放し
て、取鍋内溶湯を記鋳型キャビティ内に充填する工程、
（５）取鍋内溶湯を鋳型内に充填するのに連動して、前
記突出部とスライドノズル間の間隙に、間隙に加わる圧
力に応じて制御しつつ外部より圧縮気体を供給する工
程、（６）鋳型キャビティ内に溶湯が充填された後に、
前記取鍋の底部流出口を閉止して取鍋内からの溶湯の流
出を停止する工程、（７）スライドノズルを鋳型の注入
口から離反させる工程、（８）鋳型キャビティ内に溶湯
が充填された後、取鍋または鋳型を移動する工程、
（９）鋳型キャビティ内に溶湯が充填されていない新た
な鋳型を溶湯充填位置に配置する工程、 少なくとも以上（１）〜（９）の工程の組み合せからな
り、その工程を反復して行うことを特徴とする自動注湯
方法。1. A step of (1) closing a bottom outlet of a ladle to hold a molten metal in the ladle, and (2) a step of arranging an injection port of a mold under the bottom outlet. ) The inside of the pipe extending to the bottom outlet of the ladle is formed as a protrusion that gradually narrows from its upper part to its lower part, and a slide nozzle fitted with a slight gap to this protrusion is extended to A step of bringing the lower end and the injection port of the mold close to each other to communicate the ladle and the mold cavity, (4) a step of opening the bottom outlet of the ladle and filling the ladle with the molten metal into the mold cavity,
(5) A step of supplying compressed gas from the outside to the gap between the projecting portion and the slide nozzle while controlling it according to the pressure applied to the gap in tandem with filling the molten metal in the ladle into the mold, 6) After the molten metal is filled in the mold cavity,
Closing the bottom outlet of the ladle to stop the outflow of the molten metal from the ladle; (7) separating the slide nozzle from the mold inlet; (8) filling the mold cavity with the molten metal. And then move the ladle or mold,
(9) A step of arranging a new mold, in which the molten metal is not filled in the mold cavity, at the molten metal filling position, comprising at least the combination of the steps (1) to (9), and repeating the step. A characteristic automatic pouring method.
し、前記底部流出口を開放して溶湯を下に位置する鋳型
の注入口に注入する自動注湯装置において、前記底部流
出口の下部に延設して内部を上部から下部に向かい次第
に絞る管路を有する突出部と、該突出部に僅かな間隙を
持ち嵌合して伸縮するスライドノズルと、前記取鍋内溶
湯を鋳型内に充填するのに連動して、前記僅かな間隙に
加わる溶湯圧力に応じて気体を送る圧力制御手段と、か
らなることを特徴とする自動注湯装置。2. An automatic pouring apparatus for sealing a molten metal by sealing a bottom outlet of a ladle and opening the bottom outlet to inject the molten metal into an inlet of a mold located below the bottom. A protrusion having a conduit extending downward from the outlet to gradually narrow the inside from the upper to the lower, a slide nozzle that fits and expands with a slight gap in the protrusion, and the molten metal in the ladle. An automatic pouring device comprising: a pressure control unit that sends gas in accordance with the molten metal pressure applied to the slight gap in association with filling the mold into the mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9360695A JPH08290261A (en) | 1995-04-19 | 1995-04-19 | Method and device for automatic metal pouring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9360695A JPH08290261A (en) | 1995-04-19 | 1995-04-19 | Method and device for automatic metal pouring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08290261A true JPH08290261A (en) | 1996-11-05 |
Family
ID=14086997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9360695A Pending JPH08290261A (en) | 1995-04-19 | 1995-04-19 | Method and device for automatic metal pouring |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08290261A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015047608A (en) * | 2013-08-30 | 2015-03-16 | 日立金属株式会社 | Method of manufacturing casting |
| CN106735139A (en) * | 2017-01-05 | 2017-05-31 | 四川永森航空材料科技有限公司 | A kind of apparatus for pouring of engine main bearing cover |
| CN106944609A (en) * | 2017-03-17 | 2017-07-14 | 华北理工大学 | A kind of outstanding flowing water mouthful and reduction molten steel are with being mingled with the method for corroding resistance to material |
| CN111151715A (en) * | 2020-01-21 | 2020-05-15 | 三鑫重工机械有限公司 | Casting contact type pouring method and device thereof |
| CN112157253A (en) * | 2020-09-25 | 2021-01-01 | 三明学院 | Whole-process non-oxidation protection casting device and casting method |
| DE112019006134T5 (en) | 2018-12-10 | 2021-08-19 | Skc Co., Ltd. | POLYVINYL ACETAL RESIN COMPOSITION, FILM FOR LAMINATED GLASS AND LAMINATED GLASS |
| DE112019006121T5 (en) | 2018-12-10 | 2021-09-09 | Skc Co., Ltd. | GLASS ADHESIVE FILM AND METHOD OF ITS MANUFACTURING |
| DE112019006313T5 (en) | 2018-12-20 | 2021-09-09 | Skc Co., Ltd. | GLASS LAMINATE FILM AND LAMINATED GLASS WITH THIS FOIL |
-
1995
- 1995-04-19 JP JP9360695A patent/JPH08290261A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015047608A (en) * | 2013-08-30 | 2015-03-16 | 日立金属株式会社 | Method of manufacturing casting |
| CN106735139A (en) * | 2017-01-05 | 2017-05-31 | 四川永森航空材料科技有限公司 | A kind of apparatus for pouring of engine main bearing cover |
| CN106944609A (en) * | 2017-03-17 | 2017-07-14 | 华北理工大学 | A kind of outstanding flowing water mouthful and reduction molten steel are with being mingled with the method for corroding resistance to material |
| DE112019006134T5 (en) | 2018-12-10 | 2021-08-19 | Skc Co., Ltd. | POLYVINYL ACETAL RESIN COMPOSITION, FILM FOR LAMINATED GLASS AND LAMINATED GLASS |
| DE112019006121T5 (en) | 2018-12-10 | 2021-09-09 | Skc Co., Ltd. | GLASS ADHESIVE FILM AND METHOD OF ITS MANUFACTURING |
| DE112019006313T5 (en) | 2018-12-20 | 2021-09-09 | Skc Co., Ltd. | GLASS LAMINATE FILM AND LAMINATED GLASS WITH THIS FOIL |
| CN111151715A (en) * | 2020-01-21 | 2020-05-15 | 三鑫重工机械有限公司 | Casting contact type pouring method and device thereof |
| CN111151715B (en) * | 2020-01-21 | 2020-08-28 | 三鑫重工机械有限公司 | Casting contact type pouring method and device thereof |
| CN112157253A (en) * | 2020-09-25 | 2021-01-01 | 三明学院 | Whole-process non-oxidation protection casting device and casting method |
| CN112157253B (en) * | 2020-09-25 | 2022-02-01 | 三明学院 | Whole-process non-oxidation protection casting device and casting method |
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