JPH0775767B2 - Ladles - Google Patents
LadlesInfo
- Publication number
- JPH0775767B2 JPH0775767B2 JP4057500A JP5750092A JPH0775767B2 JP H0775767 B2 JPH0775767 B2 JP H0775767B2 JP 4057500 A JP4057500 A JP 4057500A JP 5750092 A JP5750092 A JP 5750092A JP H0775767 B2 JPH0775767 B2 JP H0775767B2
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- ladle
- arm
- pumping
- port
- 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.)
- Expired - Fee Related
Links
- 239000002184 metal Substances 0.000 claims description 100
- 229910052751 metal Inorganic materials 0.000 claims description 100
- 238000005086 pumping Methods 0.000 claims description 24
- 238000000465 moulding Methods 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 6
- 230000000630 rising effect Effects 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims 1
- 238000010792 warming Methods 0.000 claims 1
- 238000005266 casting Methods 0.000 description 7
- 230000003647 oxidation Effects 0.000 description 7
- 238000007254 oxidation reaction Methods 0.000 description 7
- 238000009413 insulation Methods 0.000 description 4
- 239000000155 melt Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 229910052593 corundum Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000004512 die casting Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 239000005909 Kieselgur Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000012768 molten material Substances 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 230000009182 swimming Effects 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Landscapes
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、保温炉に保温した溶融
材料をダイカストマシン等に供給する時に清浄な材料を
供給する技術に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for supplying a clean material to a die casting machine or the like when supplying a molten material kept in a heat insulating furnace.
【０００２】[0002]
【従来の技術】従来より、鋳物を鋳造する場合、ダイカ
ストマシン等の成形機の側に保温炉が設置され該保温炉
に保温された溶湯が保持されている。そして一般には専
用の自動給湯機も設置されており、該給湯機によりラド
ルを介して成形機に溶湯が供給されるようになされてい
る。2. Description of the Related Art Conventionally, when casting a casting, a heat-retaining furnace is installed on the side of a molding machine such as a die casting machine, and the heat-retaining molten metal is held in the heat-retaining furnace. Further, generally, a dedicated automatic water heater is also installed, and the molten water is supplied by the water heater to the molding machine via the ladle.
【０００３】その場合、多くは該保温炉に保持された溶
湯の表面に空気と接しているため酸化されたＡｌ2Ｏ3、
ＳｉＯ2等の酸化物が浮遊し該表面全般を覆っている。
さらに保温炉の容器は黒鉛ルツボでできているのが一般
的であり、そのルツボを直接加熱して溶湯を間接加熱し
ている。そうすると溶湯湯面のルツボ近くは高温に加え
空気が存在しているのでルツボ近くの溶湯は酸化が起こ
りやすくコランダム等のハードスポット生成物が生成さ
れやすく、それがラドルの汲み取り位置まで拡散し表面
に浮遊している酸化物に混ざって存在している。In this case, most of the Al2O3, which has been oxidized because the surface of the molten metal held in the heat-retaining furnace is in contact with air,
Oxides such as SiO2 float and cover the entire surface.
Further, the container of the heat insulation furnace is generally made of a graphite crucible, and the crucible is directly heated to indirectly heat the molten metal. Then, since air is present in addition to the high temperature near the crucible on the surface of the molten metal, the molten metal near the crucible is prone to oxidation and hard spot products such as corundum are easily generated, which diffuse to the pumping position of the ladle and spread on the surface. It exists as a mixture with floating oxides.
【０００４】また該保温炉に供給される溶湯は同敷地内
にインゴット溶解装置が設置されいて該溶解装置により
溶解され供給される。該溶解装置は重油バーナやガスバ
ーナの高温炎によりインゴットを加熱溶解するのでスピ
ネル等のハードスポット生成物が生成しやすく、上述の
保温炉に供給の度にフィルターで濾過しているが該ハ−
ドスポット生成物は完全に阻止できず該保温炉に流入
し、該保温炉の表面に浮遊している酸化物に混入してい
る。ところが図１１に示すように従来のラドル１６は汲
み取り口１７が開放上縁に形成されており、湯面に浮遊
する酸化物を汲み取る構造になっていた。また図１２
は、余分の溶湯を汲み取り後、溶湯を所定の量に計量す
る行程においてアーム４が上昇停止し、溶湯を所定の量
にするためラドル１６は軸９を支点にて回動（時計回
り）し、所定の角度で停止し溶湯の排出を継続し、排出
を終えようとする瞬間を示している。その後ラドル１６
は反転回動し給湯待機の角度に戻りラドル１６に残った
溶湯が成形機に供給されるのであるが、くみ取り口１７
と保温炉の湯面１５とに落差があり酸化を促進しやすい
動作であった。The molten metal supplied to the heat-retaining furnace is supplied after being melted by the ingot melting device installed in the same site. Since the melting apparatus heats and melts the ingot by the high temperature flame of the heavy oil burner or the gas burner, hard spot products such as spinel are likely to be generated, and the ingot is filtered by the filter every time it is supplied to the heat-retaining furnace.
The de-spot product cannot be completely blocked, flows into the heat retaining furnace, and is mixed with the oxide floating on the surface of the heat retaining furnace. However, as shown in FIG. 11, the conventional ladle 16 has a structure in which the pumping port 17 is formed at the open upper edge, and the oxide floating on the surface of the molten metal is pumped out. Also in FIG.
After pumping the excess melt, the arm 4 stops rising in the process of measuring the melt to a predetermined amount, and the ladle 16 rotates (clockwise) around the shaft 9 as a fulcrum to bring the melt to a predetermined amount. , At a predetermined angle, continues to discharge the molten metal, and indicates the moment when the discharge is about to end. Then ladles 16
Is rotated reversely to return to the hot water supply standby angle and the molten metal remaining in the ladle 16 is supplied to the molding machine.
There was a drop between the hot water level 15 of the heat insulation furnace and the operation, which facilitated the oxidation.
【０００５】[0005]
【発明が解決しようとする課題】上述のような理由で鋳
物に移行された酸化物は鋳物の内部に境界層を形成し金
属組織の結合強度を弱くしたり、鋳物の外観を悪くした
り、該ハ−ドスポット生成物は硬く、鋳物の金属組織内
に介在すると刃物等の加工工具が損傷したり、あるいは
鋳物にクラックが発生したり、という不具合があること
からラドルにより成形機に運び込まれないことが望まし
い。さらに保温炉の湯面に浮遊する酸化物の発生を極力
抑え、酸化物をラドルが汲み取る危険を少なくすること
も望ましい。よって本考案は、かかる点に鑑みなされた
ものであり、その目的とするところは、ラドルの構造を
適切に設計し、ラドルの汲み取り動作手順を適切にし、
加工工具の損傷や成形欠陥や製品外観不良等を招く酸化
物やハ−ドスポット生成物の成形機への移行を確実に阻
止せんとすることにある。The oxide transferred to the casting for the above-mentioned reasons forms a boundary layer inside the casting to weaken the bond strength of the metal structure, or to deteriorate the appearance of the casting. The hard spot product is hard, and if it is present in the metallographic structure of the casting, it causes damage to the working tool such as a cutting tool, or cracks in the casting. Not desirable. Furthermore, it is also desirable to suppress the generation of oxides floating on the hot water surface of the heat insulation furnace as much as possible, and to reduce the risk of the ladle pumping the oxides. Therefore, the present invention has been made in view of such a point, and its purpose is to properly design the structure of the ladle and to make the procedure of pumping the ladle appropriate.
The purpose is to reliably prevent the transfer of oxides and hard spot products to the molding machine, which cause damage to the processing tools, molding defects, and poor product appearance.
【０００６】[0006]
【課題を解訣するための手段】上記の目的を達成するた
めに、本発明の解決手段は、自動給湯機のラドルが溶湯
汲み取り時に、保温炉の湯面に浮遊する酸化物を汲み取
らないようにすることにある。即ち余分に溶湯を一旦汲
み入れたのち成形機に供給される所定の供給量に計量す
るため余分の溶湯を排出する該ラドルの汲み取り口を該
ラドルの開放上縁より下方に貫通形成し、該ラドルが反
転し該汲み取り口が湯面を上昇通過するとき先端が遅れ
て通過する突起体を該汲み取り口の下方に一定の距離以
内に形成する。さらに該ラドルが余分の溶湯を排出する
動作を該汲み取り口が湯面に到ったときアームが上昇停
止し、溶湯を排出完了するようにする。そのために該汲
み取り口が湯面に停止する以前に所定の供給量より設定
される傾斜角度に該ラドルが回動完了するようにする。[Means for Solving the Problems] In order to achieve the above object, the solution means of the present invention is such that when the ladle of an automatic water heater pumps molten metal, it does not pump oxides floating on the hot water surface of the heat-retaining furnace. To do so. That is, an extra molten metal is once pumped in and then, in order to measure a predetermined supply amount to be supplied to the molding machine, a pumping port of the ladle for discharging the extra molten metal is formed so as to penetrate therethrough below the open upper edge of the ladle. When the ladle is reversed and the pumping port rises and passes over the surface of the molten metal, a protrusion is formed below the pumping port within a certain distance, the tip passing behind with a delay. Further, the operation of the ladle to discharge the excess molten metal is stopped when the pumping port reaches the surface of the molten metal, and the arm stops rising to complete the discharge of the molten metal. Therefore, before the drawing port stops on the surface of the molten metal, the ladle is completely rotated at an inclination angle set by a predetermined supply amount.
【０００７】[0007]
【作用】そのようにすれば、該ラドルは湯面上の湯面近
くの水平軸を中心に回動し汲み取り動作に入るので、該
汲み取り口は突起体が先に湯面に接触し浮遊する酸化物
を押し退けた後に湯面を下降通過し、その後該開放上縁
を越えて溶湯が流入しない角度で該ラドルは停止する。
その間に該ラドルは湯面下の酸化物が遊泳していない清
浄な溶湯を余分に満たすことになる。By doing so, the ladle rotates about a horizontal axis near the surface of the molten metal and enters into the scooping operation, so that the projection port has an oxide that floats when the projection comes into contact with the surface of the molten metal first. After moving away from the ladle, the ladle descends and passes through the molten metal surface, and then the ladle stops at an angle such that the molten metal does not flow over the open upper edge.
In the meantime, the ladle will be overfilled with clean molten metal with no subsurface oxides swimming.
【０００８】また、余分の溶湯を汲み取り排出して所定
の湯量を計量するのが該ラドルおよび溶湯の保温面で一
般的であり、その余分の溶湯を保温炉に戻すとき、湯面
を該汲み取り口が通過するとき、該ラドルの傾斜角度を
所定の供給量から導き出される角度に戻してのちにアー
ムが上昇停止するので、アームが上昇停止して計量され
る該ラドル内の湯面と保温炉の湯面とがほぼ同位の状態
を経て該汲み取り口が湯面を通過する。仮にアームの上
昇停止位置が調整不良でも該汲み取り口と溶湯湯面との
落差は僅かであり先端が下がり気味な突起体の傾斜面で
一旦受けそれから湯面に流れ出るので溶湯を攪乱すこと
は少ない。よって溶湯の酸化促進を抑えると共に該ラド
ルは湯面に浮遊する酸化物を汲み上げない。このように
して該ラドルを自動給湯機に使用すれば、成形機に湯面
に浮遊している酸化物を供給することはない。[0008] Further, it is common to keep the heat of the ladle and the molten metal by pumping out and discharging the excess molten metal and measuring the predetermined amount of the molten metal. When the mouth passes, the arm stops rising after returning the inclination angle of the ladle to an angle derived from a predetermined supply amount, so that the arm stops rising and is weighed and the heat-retaining furnace in the ladle is measured. After passing a state of almost equality with the molten metal surface, the drawing port passes through the molten metal surface. Even if the arm raising / stopping position is improperly adjusted, the difference between the pumping port and the surface of the molten metal is small, and the tip is lowered and once received by the inclined surface of the protruding body and then flows out to the surface of the molten metal, the molten metal is not disturbed . Therefore, the oxidation promotion of the molten metal is suppressed and the ladle does not pump up the oxide floating on the molten metal surface. When the ladle is used in the automatic water heater in this manner, the oxide floating on the molten metal surface is not supplied to the molding machine.
【０００９】[0009]
【実施例】以下、本発明の実施例を図面に基ずいて説明
する。図１は本考案の実施例に係わる成形機と自動給湯
機と保温炉の配置を示す。１は成形機であって、その射
出スリーブ２に溶湯が供給され成形される。３は自動給
湯機であって、そのアーム４の先に珪藻土が被覆された
鋳鉄製のラドル５が回動自在に取付られている。さらに
６は保温炉であって、そのルツボ７に同一敷地内のある
溶解装置（図示せず）より供給された溶湯８が７２０℃
に保温貯えられている。そしてアーム４の動きによって
ラドル５はルツボ７と射出スリーブ２とを往復し溶湯を
スリーブ２へ供給する。図２は成形機の台座（図示せ
ず）に設置された自動給湯機３のアーム４にラドル５が
取付られた状態を示す。そしてラドル５はアーム４の軸
９を中心に回動する。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows the arrangement of a molding machine, an automatic water heater, and a heat insulation furnace according to an embodiment of the present invention. Reference numeral 1 denotes a molding machine, in which a molten metal is supplied to an injection sleeve 2 and molding is performed. An automatic water heater 3 has an arm 4 to which a cast iron ladle 5 coated with diatomaceous earth is rotatably attached. Further, 6 is a heat-retaining furnace, and the crucible 7 has 720 ° C. of molten metal 8 supplied from a melting device (not shown) in the same site.
It is kept warm. The movement of the arm 4 causes the ladle 5 to reciprocate between the crucible 7 and the injection sleeve 2 to supply the molten metal to the sleeve 2. FIG. 2 shows a state in which the ladle 5 is attached to the arm 4 of the automatic water heater 3 installed on the pedestal (not shown) of the molding machine. Then, the ladle 5 rotates about the shaft 9 of the arm 4.
【００１０】図３は、本発明のラドル５の縦断面図であ
って、アーム４が湯面検知器（図示せず）により所定の
高さにて下降停止し、その後軸９を中心にラドル５が回
動しくみ取り口１０が湯面を通過する直前の状態を示し
ている。そして１１はラドル５の上部にある断面Ｔ字型
の突起物であって、ラドル５はアーム４に断面Ｔ字型の
突起物１１により組み付けられている。また射出スリー
ブ２に溶湯を流し込む供給口１２が成形機１より（図で
は左側）にラドル５の開放上縁１３に形成せられ、保温
炉６より溶湯を流入させるくみ取り口１０が保温炉６よ
り（図では右側）にラドル５のくの字に伸びた開放上縁
１３より下方に貫通画成されていることを示している。
そしてくみ取り口１０の下方に断面が略嘴状の突起１４
がその先端をその付け根より下げた状態に形成されてい
る。FIG. 3 is a vertical cross-sectional view of the ladle 5 of the present invention. The arm 4 is lowered and stopped at a predetermined height by a melt level detector (not shown), and then the ladle 5 is centered around the shaft 9. Reference numeral 5 shows a state in which the rotating mechanism 10 is just before the take-up port 10 passes over the molten metal surface. Reference numeral 11 denotes a protrusion having a T-shaped cross section on the upper portion of the ladle 5, and the ladle 5 is attached to the arm 4 by the protrusion 11 having a T-shaped cross section. Further, a supply port 12 for pouring the molten metal into the injection sleeve 2 is formed in the open upper edge 13 of the ladle 5 from the molding machine 1 (on the left side in the figure), and a suction port 10 for inflowing the molten metal from the heat retaining furnace 6 is provided from the heat retaining furnace 6. In the drawing (on the right side in the figure), it is shown that the through hole is defined below the open upper edge 13 extending in a dogleg shape of the ladle 5.
A protrusion 14 having a substantially beak-shaped cross section is provided below the intake port 10.
Is formed with its tip lower than its root.
【００１１】図４は、ラドル５が軸９を中心に回動し該
くみ取り口が湯面１５を通過した後、溶湯を流入してい
る状態を示している。図５は、その後ラドル５が開放上
縁１３を越えて溶湯８が流入しない余裕をもった角度ま
で回動し、溶湯を満杯に汲み取った状態を示している。
図６は、成形機に供給する溶湯の重量より設定された角
度に反転回動（反時計回り）し停止し、ラドル５に入っ
た余分の溶湯を排出している状態を示している。図７
は、一旦ラドル５が図６の角度のまま汲み取り口１０が
湯面に差し掛かってアーム４が上昇停止し、溶湯の排出
を完了し、所定の重量の溶湯が計量された状態を示して
いる。図８は、さらにラドル５を軸９を中心に回動させ
たのち成形機に供給するために待機している状態を示し
ている。図９は、本発明のラドル５の平面図を示してい
る。さらに図１０は、異なった方法での溶湯の計量動作
において、供給量より設定される湯面高さにアーム４を
上昇停止させ、溶湯を排出し、所定の湯量をラドル５内
に保持したことを示している。図１１、１２は、従来の
汲み取り方法を示す図でありので跳す。図１３は、図７
の状態より微妙に停止位置が異なりくみ取り口１０が湯
面１５より高位で溶湯の排出が続いている状態を示し、
略くちばし状の突起１４の傾斜面に溶湯が受けとめられ
ていることを示している。FIG. 4 shows a state in which the ladle 5 is rotated around the shaft 9 and the suction port has passed the molten metal surface 15 and then the molten metal is being introduced. FIG. 5 shows a state in which the ladle 5 is rotated beyond the open upper edge 13 to an angle such that the molten metal 8 does not flow into the ladle 5, and the molten metal is fully drawn.
FIG. 6 shows a state in which the excess molten metal that has entered the ladle 5 is being discharged by reversing and turning (counterclockwise) at an angle set by the weight of the molten metal supplied to the molding machine and stopping. Figure 7
6 shows a state in which the suction port 10 reaches the surface of the molten metal while the ladle 5 remains at the angle shown in FIG. 6, the arm 4 stops moving upward, the discharge of the molten metal is completed, and the molten metal of a predetermined weight is measured. FIG. 8 shows a state in which the ladle 5 is further rotated around the shaft 9 and is then on standby for supply to the molding machine. FIG. 9 shows a plan view of the ladle 5 of the present invention. Further, FIG. 10 shows that in the operation of measuring the molten metal by different methods, the arm 4 is stopped from rising to the level of the molten metal set by the supply amount, the molten metal is discharged, and the predetermined amount of molten metal is held in the ladle 5. Is shown. 11 and 12 are diagrams showing a conventional drawing method, so that the drawing will be performed. FIG. 13 shows FIG.
The state that the stop position is slightly different from the state of No. 3 and the suction port 10 is higher than the molten metal surface 15 and the molten metal is continuously discharged,
It is shown that the molten metal is received on the inclined surface of the substantially beak-shaped projection 14.
【００１２】次に、ラドル５が如何にして酸化物を汲み
取らないかを動作で説明する（図３、図４、図５を参
照）。湯面上に浮かぶようにアームの動作で降下したラ
ドル５は軸９を中心に回動し、くみ取り口１０が湯面１
５に接近すると突起１４が先端より溶湯に沈む。その回
動を続けると突起１４の略Ｖ字形の両側面によってくみ
取り口１０が通過する直前に酸化物が押し退けられるこ
とになり、くみ取り口１０が湯面を通過するときは湯面
に酸化物は無く、酸化物を汲み取らない。さらにラドル
５はくみ取り口１０の開放上縁１３が湯面近くで、溶湯
や酸化物が上縁１３を越さないところで回動停止し、な
お湯面下の清浄な溶湯のくみ取りを継続する。Next, how the ladle 5 does not pump up the oxide will be described in operation (see FIGS. 3, 4 and 5). The ladle 5, which is lowered by the operation of the arm so as to float on the surface of the molten metal, rotates about the shaft 9, and the suction port 10 is at the surface of the molten metal 1.
When approaching 5, the projection 14 sinks into the molten metal from the tip. When the rotation continues, the oxide is pushed away by the substantially V-shaped side surfaces of the protrusion 14 immediately before the suction port 10 passes, and when the suction port 10 passes the molten metal surface, the oxide is not formed on the molten metal surface. No, do not pump oxides. Further, the ladle 5 stops rotating when the open upper edge 13 of the suction port 10 is near the surface of the molten metal and the molten metal or oxide does not pass over the upper edge 13, and continues to scoop clean molten metal below the molten metal surface.
【００１３】このようにして、供給量より余分の溶湯を
汲み取り口１０より流入させると回動停止角度より反転
回動し、所定の供給量より設定された角度で停止する。
その後アーム４が上昇し、汲み取り口１０が湯面１５を
通過するとき停止し、その後、待機角度まで回動する。
また、アーム４の上昇とラドル５の反転回動を併行して
も良いが設定された角度に回動する前に汲み取り口１０
は湯面１５を通過しないようにしなければならない。ま
た汲み取り口１０が湯面１５下にある時は、ラドル５内
の湯面が保温炉６のルツボ７内の湯面より高位にあるの
で常時溶湯を排出することになるので酸化物を汲み取る
こともなく、湯面の酸化促進も促さない。仮に設定され
た角度に回動されたのちのアーム４の上昇停止位置が不
充分で停止高さが微妙に崩れて汲み取り口１０が湯面１
５より高位または低位で溶湯を排出しても、高位のとき
はくちばし状の突起１４の傾斜面が作用して緩やかに流
出するので湯面下の溶湯を酸化促進を促さない。また低
位の時もラドルが回動するとき排出量が僅かなでくちば
し状の突起１４の傾斜面が作用して緩やかに流出するの
で、湯面下の溶湯を酸化促進を促さない。また時計方向
の回動で汲み取り口１０が湯面１５をすばやく通過する
ときもくちばし状の突起１４で掻き除かれ清浄な湯面を
通過し、酸化物を汲み取ることはない。In this way, when an excess amount of molten metal is supplied from the pumping port 10 in excess of the supply amount, it is rotated reversely from the rotation stop angle and stopped at an angle set by a predetermined supply amount.
After that, the arm 4 rises, stops when the drawing port 10 passes the molten metal surface 15, and then rotates to the standby angle.
Further, the raising of the arm 4 and the reverse rotation of the ladle 5 may be carried out in parallel, but the pumping port 10 is rotated before the arm 4 is rotated to a set angle.
Must not pass over the surface 15. When the pumping port 10 is below the molten metal surface 15, since the molten metal surface in the ladle 5 is higher than the molten metal surface in the crucible 7 of the heat-retaining furnace 6, the molten metal is constantly discharged. In addition, it does not promote the oxidation promotion of the surface of the bath. After the arm 4 is temporarily rotated to the set angle, the ascending stop position of the arm 4 is insufficient and the stop height is subtly collapsed so that the pumping port 10 becomes
Even if the molten metal is discharged at a higher or lower position than 5, the inclined surface of the beak-shaped projection 14 acts at a high position to allow the molten metal to flow out gently, so that oxidation promotion of the molten metal below the molten metal surface is not promoted. Even at a low position, when the ladle rotates, the discharge amount is slight, and the inclined surface of the beak-shaped protrusion 14 acts to gently flow out, so that the promotion of oxidation of the molten metal below the molten metal surface is not promoted. Also, when the pumping port 10 quickly passes through the molten metal surface 15 by the clockwise rotation, it is scraped off by the beak-shaped projections 14 and passes through the clean molten metal surface, and does not pump out the oxide.
【００１４】以上の説明のように湯面浮遊した酸化物を
ラドル５が汲み取ることはないので成形機に酸化物が移
行することはない。また余分の溶湯を排出するのはすべ
て湯面下または湯面の高さで行われるので溶湯の酸化を
促進することがなく酸化物の発生を抑えることが出来
る。この結果、従来のラドルを使用して成形機に溶湯を
給湯した時の不具合は、０.１％であったが本発明のラ
ドルを使用して成形機に溶湯を給湯した時の不具合は、
０.００５％であった。よって前述の不具合による経済
損失は莫大なものであったが本発明により不具合は１／
２０以下に軽減された。As described above, since the ladle 5 does not pump up the oxide floating on the molten metal surface, the oxide does not migrate to the molding machine. Further, since the excess molten metal is all discharged under the surface of the molten metal or at the height of the molten metal surface, it is possible to suppress the generation of oxides without promoting the oxidation of the molten metal. As a result, the problem when the molten metal was supplied to the molding machine using the conventional ladle was 0.1%, but the problem when the molten metal was supplied to the molding machine using the ladle of the present invention was:
It was 0.005%. Therefore, the economic loss due to the above-mentioned trouble was enormous, but the trouble is 1 /
It was reduced to 20 or less.
【００１５】[0015]
【発明の効果】以上に説明したように、本発明によれば
ラドルのくみ取り口を貫通孔によって下方に設け、その
くみ取り口の下方に嘴状の突起を設けたので清浄な溶湯
のみを汲み取ることが出来、成形機に酸化物等の不純物
を含んだ溶湯を供給することがなく、加工工具の損傷や
湯じわや成形欠陥等を招くハードスポット生成物を含ん
だ酸化物が成形機に移行するのを阻止することが出来
た。また計量動作を改良したので酸化物の発生を抑え、
酸化物を汲み取る確率を減少出来た。As described above, according to the present invention, since the ladle suction port is provided below by the through hole and the beak-shaped projection is provided below the suction port, only clean molten metal can be pumped out. The oxide containing the hard spot product that causes damage to the processing tool, wrinkles and molding defects, etc. is transferred to the molding machine without supplying molten metal containing impurities such as oxides to the molding machine. I was able to prevent it from doing. Also, because the metering operation has been improved, the generation of oxides is suppressed,
The probability of pumping out oxides could be reduced.
【図１】 本発明の実施例にかかわる、成形機と自動給
湯機と保温炉の配置図FIG. 1 is a layout diagram of a molding machine, an automatic water heater, and a heat-retaining furnace according to an embodiment of the present invention.
【図２】 本発明の実施例のアームとラドルの取付け関
係図FIG. 2 is an attachment relation diagram of an arm and a ladle according to an embodiment of the present invention.
【図３】 本発明のラドルのくみ取り口が湯面を通過す
る直前の縦断面図FIG. 3 is a vertical cross-sectional view immediately before the suction hole of the ladle according to the present invention passes through the molten metal surface.
【図４】 本発明のラドルのくみ取り口が溶湯を汲み取
り中の縦断面図FIG. 4 is a vertical cross-sectional view of the ladle suction port of the present invention during pumping of molten metal.
【図５】 本発明のラドルが溶湯を満杯汲み取った時の
縦断面図FIG. 5 is a longitudinal sectional view of the ladle of the present invention when the molten metal is fully drawn.
【図６】 本発明のラドルが反転回動し角度を設定し、
溶湯を排出中の縦断面図FIG. 6 is a view showing that the ladle of the present invention is rotated reversely to set an angle,
Longitudinal sectional view during discharge of molten metal
【図７】 本発明のラドルが溶湯を排出完了し、所定の
量を汲み取った時の縦断面図FIG. 7 is a longitudinal cross-sectional view when the ladle of the present invention has completely discharged the molten metal and has drawn a predetermined amount.
【図８】 本発明のラドルが所定の量を汲み取り、成形
機に供給するため待機中の縦断面図FIG. 8 is a longitudinal sectional view of the ladle according to the present invention in a standby state for pumping a predetermined amount and supplying it to the molding machine.
【図９】 本発明のラドルの平面図FIG. 9 is a plan view of a ladle according to the present invention.
【図１０】 本発明のラドルのもう一の溶湯計量動作に
おける、排出完了したときの縦断面図FIG. 10 is a vertical cross-sectional view of another ladle measuring operation of the present invention when the discharging is completed.
【図１１】 従来のラドルの溶湯汲み取り中の縦断面図FIG. 11 is a vertical sectional view of a conventional ladle during pumping of molten metal.
【図１２】 従来のラドルの溶湯排出中の縦断面図FIG. 12 is a vertical sectional view of a conventional ladle during molten metal discharge.
【図１３】 停止位置が微妙にくるったときの計量完了
を示す縦断面図FIG. 13 is a vertical cross-sectional view showing the completion of weighing when the stop position delicately comes.
Claims (2)
湯機の開放上縁より下位に貫通した汲み取り口を有する
ラドルにおいて、下方に先端が傾斜した突起体を該汲み
取り口の外下部に設けたことを特徴とするラドル。1. A ladle having a pumping port penetrating below an open upper edge of an automatic water heater for supplying molten metal to a pumping machine, wherein a protrusion having a downwardly inclined tip is provided at an outer lower portion of the pumping port. Ladol characterized by that.
湯機のラドルの計量動作において、アームが上昇しラド
ルが余分の溶湯を排出する工程であって、汲み取り口が
保温炉の溶湯湯面に到ったときアームの上昇を停止し、
該汲み取り口が湯面で停止する以前に所定の供給量から
設定される角度に該ラドルを回動させることを特徴とす
る計量方法。2. A step of discharging a surplus of molten metal by an arm rising and a ladle in a ladle metering operation of an automatic water heater for feeding the molten metal to a molding machine, and the pumping port is located on the molten metal surface of the warming furnace. When it arrives, stop raising the arm,
A measuring method characterized in that the ladle is rotated to an angle set from a predetermined supply amount before the drawing port stops at the surface of the molten metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4057500A JPH0775767B2 (en) | 1992-02-10 | 1992-02-10 | Ladles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4057500A JPH0775767B2 (en) | 1992-02-10 | 1992-02-10 | Ladles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05220563A JPH05220563A (en) | 1993-08-31 |
| JPH0775767B2 true JPH0775767B2 (en) | 1995-08-16 |
Family
ID=13057450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4057500A Expired - Fee Related JPH0775767B2 (en) | 1992-02-10 | 1992-02-10 | Ladles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0775767B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5227019A (en) * | 1991-07-31 | 1993-07-13 | Shell Oil Company | Wastepaper deinking process |
| KR20030088693A (en) * | 2002-05-14 | 2003-11-20 | 현대자동차주식회사 | Apparatus of molten metal pouring for prevention of oxide film inflow |
| CN110834084A (en) * | 2019-11-27 | 2020-02-25 | 湖南江滨机器（集团）有限责任公司 | Metal solution ladle, method for scooping clean metal solution and method for casting clean metal solution |
| CN110788311A (en) * | 2019-11-27 | 2020-02-14 | 湖南江滨机器（集团）有限责任公司 | Method for quantitatively scooping metal solution by using ladle and method for ensuring ladle to be at safe working height of metal solution |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58184061A (en) * | 1982-04-20 | 1983-10-27 | Fuso Light Alloys Co Ltd | Method for charging molten metal to die casting machine |
| JPH049262A (en) * | 1990-04-27 | 1992-01-14 | Ube Ind Ltd | Method for ladling-weighing molten metal in automatic molten metal supplying device |
| JP3111447U (en) * | 2005-03-16 | 2005-07-28 | 日本樹脂工芸株式会社 | Product hanging protector and anti-slip tool used for it. |
-
1992
- 1992-02-10 JP JP4057500A patent/JPH0775767B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05220563A (en) | 1993-08-31 |
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