JPH07112241A - Metallic mold casting method and apparatus thereof - Google Patents
Metallic mold casting method and apparatus thereofInfo
- Publication number
- JPH07112241A JPH07112241A JP28201593A JP28201593A JPH07112241A JP H07112241 A JPH07112241 A JP H07112241A JP 28201593 A JP28201593 A JP 28201593A JP 28201593 A JP28201593 A JP 28201593A JP H07112241 A JPH07112241 A JP H07112241A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- molten metal
- metallic mold
- die
- pouring
- 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】本発明は金型鋳造法とその装置に
関し、特に健全な鋳塊が得られるものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal mold casting method and an apparatus therefor, and in particular, can obtain a sound ingot.
【0002】[0002]
【従来の技術】従来例えば銅ニッケル合金及びニッケル
基合金等のビレットの鋳造は一部の合金を除いて金型鋳
造もしくは半連続鋳造等により製造されている。そして
鋳塊の健全性からみて後者の方が圧倒的に有利なため、
最近では連鋳化への移行が進められているが、ニクロム
合金等一部の合金や純ニッケル等に関しては連鋳化が極
めて困難であったり、鋳造組織が金型鋳造品に比べ脆弱
であるがために後工程の熱間圧延で割れたりする問題が
あった。2. Description of the Related Art Conventionally, billets such as copper-nickel alloys and nickel-base alloys have been produced by die casting or semi-continuous casting except for some alloys. And in view of the soundness of the ingot, the latter is overwhelmingly advantageous,
Recently, the transition to continuous casting has been promoted, but some alloys such as Nichrome alloy and pure nickel are extremely difficult to continuously cast, and the casting structure is weaker than the die cast product. Therefore, there was a problem of cracking in the hot rolling in the subsequent process.
【0003】そこでこれらの金属の鋳塊の製造には下記
のような金型鋳造法が実施されている。即ち図3に示す
ように金属を溶解する溶解炉(1)の直下に金型(2)
を設置し、金属溶湯(3)を金型(2)の上部開口から
直接流下させる上注ぎ法や、図4に示すように溶解炉
(1)からの溶湯(3)を金型(2)の下部に開口した
出湯口(4)から金型内に注湯するように構成した外部
注湯パイプ(5)による下注ぎ法がある。Therefore, the following mold casting method is carried out to manufacture the ingots of these metals. That is, as shown in FIG. 3, the mold (2) is placed directly below the melting furnace (1) for melting metal.
Is installed and the molten metal (3) is directly flowed down from the upper opening of the mold (2), or the molten metal (3) from the melting furnace (1) is transferred to the mold (2) as shown in FIG. There is a down pouring method using an external pouring pipe (5) configured to pour the molten metal into the mold from the tap hole (4) opened at the bottom of the.
【0004】[0004]
【発明が解決しようとする課題】ところが上記上注ぎ法
ではスプラッシュや鋳塊に介在物が多いため健全な鋳塊
が得られず、また上記下注ぎ法では歩留りが悪く且つ装
置が複雑であって生産性が劣るという問題があった。However, in the above-mentioned top-pouring method, a healthy ingot cannot be obtained because there are many inclusions in the splash or ingot, and in the above-mentioned bottom-pouring method, the yield is poor and the apparatus is complicated. There was a problem of poor productivity.
【0005】[0005]
【課題を解決するための手段】そこで本発明はこれら問
題点に鑑み種々検討の結果、金型鋳造を用いてスプラッ
シュや介在物の巻き込みの少ない鋳塊を効率良く製造で
きる鋳造法とその装置を開発したものである。Therefore, as a result of various investigations in view of these problems, the present invention provides a casting method and an apparatus therefor capable of efficiently producing an ingot with little splash or inclusion inclusion by using die casting. It was developed.
【0006】即ち本発明の金型鋳造法は、金型内に金属
溶湯を注湯して鋳塊を製造する金型鋳造法において、金
属溶湯を金型内に出湯する出湯口を金型内底面部に設置
して注湯を開始し、その後金型内の溶湯上面と出湯口と
の距離を30〜50mmの範囲内に保持して出湯口と金型とを
相対的に上下に移動して連続的に注湯を行なうことを特
徴とするものである。That is, the mold casting method of the present invention is a mold casting method in which a molten metal is poured into a mold to produce an ingot, and a tap hole for discharging the molten metal into the mold is provided in the mold. It is installed on the bottom part to start pouring, and then the distance between the molten metal upper surface in the mold and the tap is kept within the range of 30 to 50 mm, and the tap and die are moved up and down relatively. It is characterized by continuously pouring molten metal.
【0007】また本発明の鋳造装置は、鋳塊を製造する
金型と、該金型内に上部から挿入され金型内底面部に下
端部に設けた出湯口を配置した高さ位置固定のノズル
と、ノズル出湯口から金属溶湯を出湯した際に該出湯口
と金型内の金属溶湯上面との距離を30〜50mmの範囲内に
保持するために該金型を下降させるエレベーター装置か
らなることを特徴とするものであり、この際ノズル下端
面が閉塞され、側面に出湯口を設けるのは有効である。Further, the casting apparatus of the present invention is fixed at a height position in which a die for producing an ingot and a tap hole provided at the bottom end of the die which is inserted from the top into the die and is provided at the bottom of the die are arranged. It consists of a nozzle and an elevator device that lowers the mold in order to keep the distance between the tap and the upper surface of the molten metal in the mold within a range of 30 to 50 mm when the molten metal is discharged from the nozzle discharge port. In this case, it is effective that the lower end surface of the nozzle is closed and a tap hole is provided on the side surface.
【0008】[0008]
【実施例】以下に本発明を実施例によりさらに説明す
る。EXAMPLES The present invention will be further described below with reference to examples.
【0009】本発明装置の一例は図1に示すようにモー
ター(10)によりラックとピニオンの組合せで上端のプ
ラテン(11)を上下動するエレベーター装置の、該プラ
テン(11)上に金型(2)を載せ、該エレベーター装置
とは無関係に固定された上端に漏斗(12)を有するノズ
ル(13)の下端の出湯口(4)を該金型(4)内の底面
部に位置させるように、該ノズル(13)を金型内に挿入
したものである。One example of the device of the present invention is, as shown in FIG. 1, an elevator device in which a motor (10) moves a platen (11) at the upper end up and down by a combination of a rack and a pinion. 2) is placed so that the tap hole (4) at the lower end of the nozzle (13) having a funnel (12) at the upper end fixed independently of the elevator device is located at the bottom of the mold (4). The nozzle (13) is inserted into the mold.
【0010】上記鋳造装置を用いて本発明法を実施する
には、先ず金型(2)直上の溶解炉(1)にて金属溶湯
を造り、該溶解炉(1)を傾動させて溶湯を漏斗(12)
に注ぐ、この溶湯はノズル(13)内を通って下端出湯口
(4)から出湯して金型(2)内に溜り始める。そして
金型内の溶湯上面と出湯口(4)との高さの差(h)が
30〜50mmの間の所定の値となったときにプラテン(11)
を一定速度で降下させる。なおこの降下速度はhが常に
30〜50mmの間にあるように溶湯の供給量に見合った値と
する。In order to carry out the method of the present invention using the above casting apparatus, first, a molten metal is prepared in the melting furnace (1) directly above the mold (2), and the melting furnace (1) is tilted to form the molten metal. Funnel (12)
The molten metal flows through the nozzle (13) and comes out from the lower end tap (4) and starts to accumulate in the mold (2). And the difference (h) in height between the molten metal upper surface in the mold and the tap hole (4)
Platen (11) when it reaches a predetermined value between 30 and 50 mm
To descend at a constant speed. This descent rate is always h
The value should be commensurate with the amount of molten metal supplied so that it lies between 30 and 50 mm.
【0011】このような本発明法によれば得られる鋳塊
の品質は従来品に比べて非常に優れたものとなる。なお
鋳造のスタート時には、従来の上注ぎ法のように、溶湯
は漏斗(12)から金型底面までの高さHに相当する落下
速度となるはずであるが、本発明装置によれば溶湯が通
過するノズル(13)内面の摩擦抵抗のため溶湯の落下速
度は大幅に減少し、従ってスタート時でもスプラッシュ
はほとんど発生しない利点を有する。According to the method of the present invention, the quality of the ingot obtained is extremely superior to that of the conventional product. At the start of casting, the molten metal should fall at a rate corresponding to the height H from the funnel (12) to the bottom surface of the mold as in the conventional top-pouring method. Due to the frictional resistance of the inner surface of the passing nozzle (13), the falling speed of the molten metal is greatly reduced, and therefore, there is an advantage that splash is hardly generated even at the start.
【0012】また図2に示すようにノズル下端面を閉塞
し、該ノズル(13)の側面に出湯口(4)を設けると溶
湯は横方向に出湯するので上記効果はより大きくなる。
また図1においてhを一定に保つには、プラテン(11)
内に抵抗歪計のような重量センサー(14)を設け、該セ
ンサー(14)による重量の変化率に応じてモーター(1
0)を自動的に制御してプラテン(11)の降下速度を調
整する方法が良好である。Further, as shown in FIG. 2, when the lower end surface of the nozzle is closed and the tap hole (4) is provided on the side surface of the nozzle (13), the molten metal is discharged in the lateral direction, so that the above effect is further enhanced.
Further, in order to keep h constant in FIG. 1, the platen (11)
A weight sensor (14) such as a resistance strain gauge is provided inside the motor (1) according to the rate of change of weight by the sensor (14).
A good method is to automatically control 0) to adjust the descending speed of the platen (11).
【0013】また本実施例では、エレベーター装置を用
いて金型を降下させる構成であるが、金型を固定してノ
ズルを上昇させる構成であってもよい。Further, in this embodiment, the mold is lowered by using the elevator device, but the mold may be fixed and the nozzle may be raised.
【0014】上記図1に示す装置により各種金属の鋳造
試験を実施した。即ち20kgの大気溶解炉を用いて表1に
示す各種金属を溶解し、図3に示す従来の上注ぎ金型鋳
造法と図1に示す本発明の金型鋳造法で鋳造して鋳塊の
健全性を比較調査した。なお鋳塊の大きさはφ85mm×L
400mmであり、調査結果は表1に併記した。また本発明
装置ではプラテンの降下速度は10mm/sec とし、ノズル
の下端出湯口と溶湯上面間の高さhはほぼ40mmに保っ
た。Casting tests of various metals were carried out by the apparatus shown in FIG. That is, the various metals shown in Table 1 were melted using a 20 kg atmospheric melting furnace and cast by the conventional top-pouring die casting method shown in FIG. 3 and the die casting method of the present invention shown in FIG. The soundness was comparatively investigated. The size of the ingot is φ85mm × L
It was 400 mm, and the survey results are also shown in Table 1. Further, in the apparatus of the present invention, the platen descending speed was set to 10 mm / sec, and the height h between the lower end tap of the nozzle and the upper surface of the molten metal was maintained at about 40 mm.
【0015】[0015]
【表1】 [Table 1]
【0016】表1から本発明法による鋳塊は従来の鋳塊
に比べて欠陥が少なく、且つ歩留りも良好であることが
判る。It can be seen from Table 1 that the ingot produced by the method of the present invention has fewer defects and a better yield than the conventional ingot.
【0017】[0017]
【発明の効果】このように本発明によれば金型鋳造で得
られる鋳塊の健全性に優れ、且つ歩留りも良好で、さら
に装置的にも複雑にならないので生産性の向上も図れる
等顕著な効果を奏する。As described above, according to the present invention, the soundness of the ingot obtained by die casting is excellent, the yield is good, and the apparatus is not complicated, so that the productivity can be improved. Has a great effect.
【図1】本発明装置の一例を示す説明図である。FIG. 1 is an explanatory diagram showing an example of a device of the present invention.
【図2】本発明装置の他の例の要部説明図であるFIG. 2 is an explanatory view of a main part of another example of the device of the present invention.
【図3】従来例を示す説明図であるFIG. 3 is an explanatory diagram showing a conventional example.
【図4】他の従来例を示す説明図である。FIG. 4 is an explanatory diagram showing another conventional example.
1 溶解炉 2 金型 3 金属溶湯 4 出湯口 5 外部注湯パイプ 10 モーター 11 プラテン 12 漏斗 13 ノズル 1 Melting furnace 2 Mold 3 Metal melt 4 Outlet port 5 External pouring pipe 10 Motor 11 Platen 12 Funnel 13 Nozzle
Claims (3)
する金型鋳造法において、金属溶湯を金型内に出湯する
出湯口を金型内底面部に設置して注湯を開始し、その後
金型内の溶湯上面と出湯口との距離を30〜50mmの範囲内
に保持して出湯口と金型とを相対的に上下に移動して連
続的に注湯を行なうことを特徴とする金型鋳造法。1. In a die casting method for producing molten metal by pouring molten metal into a die, a pouring port for pouring the molten metal into the die is provided on the bottom surface of the die. After that, the distance between the molten metal upper surface in the mold and the tap hole is kept within the range of 30 to 50 mm, and the tap hole and the die are moved relatively up and down to continuously perform pouring. A mold casting method characterized in that
から挿入され金型内底面部に下端部に設けた出湯口を配
置した高さ位置固定のノズルと、ノズル出湯口から金属
溶湯を出湯した際に該出湯口と金型内の金属溶湯上面と
の距離を30〜50mmの範囲内に保持するために該金型を下
降させるエレベーター装置からなることを特徴とする金
型鋳造装置。2. A mold for producing an ingot, a nozzle fixed at a height position, in which a tap hole is provided from the top into the mold and provided at the bottom end of the bottom surface of the inside of the mold. When the molten metal is discharged from the mold, the mold comprises an elevator device for lowering the mold so as to keep the distance between the discharge port and the upper surface of the molten metal in the mold within a range of 30 to 50 mm. Mold casting equipment.
を設けた請求項2記載の金型鋳造装置。3. The mold casting apparatus according to claim 2, wherein the lower end surface of the nozzle is closed and a tap hole is provided on the side surface.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP28201593A JPH07112241A (en) | 1993-10-15 | 1993-10-15 | Metallic mold casting method and apparatus thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP28201593A JPH07112241A (en) | 1993-10-15 | 1993-10-15 | Metallic mold casting method and apparatus thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH07112241A true JPH07112241A (en) | 1995-05-02 |
Family
ID=17647050
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP28201593A Pending JPH07112241A (en) | 1993-10-15 | 1993-10-15 | Metallic mold casting method and apparatus thereof |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH07112241A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014501176A (en) * | 2010-12-22 | 2014-01-20 | ノベリス・インコーポレイテッド | Shrinkage nest removal in cast ingots |
-
1993
- 1993-10-15 JP JP28201593A patent/JPH07112241A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014501176A (en) * | 2010-12-22 | 2014-01-20 | ノベリス・インコーポレイテッド | Shrinkage nest removal in cast ingots |
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