JP2011502787A - Apparatus and method for low pressure casting of a metal melt - Google Patents

Apparatus and method for low pressure casting of a metal melt Download PDF

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JP2011502787A
JP2011502787A JP2010531542A JP2010531542A JP2011502787A JP 2011502787 A JP2011502787 A JP 2011502787A JP 2010531542 A JP2010531542 A JP 2010531542A JP 2010531542 A JP2010531542 A JP 2010531542A JP 2011502787 A JP2011502787 A JP 2011502787A
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mold
intermediate container
metal melt
inoculum
casting
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ハウケ ウィルヘム
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ゲオルグ フィッシャー オートモーティヴ アーゲー
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
    • B22D1/007—Treatment of the fused masses in the supply runners
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D18/00—Pressure casting; Vacuum casting
    • B22D18/04—Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould

Abstract

本発明は、鋳造炉（１）と、金属融体（３）のための供給管路（２）と、鋳型（５）に向けた管路（４）と、ガス圧を与えるための供給部（６）とを備える、金属融体を低圧鋳造するための装置に関する。鋳型（５）と管路（４）との間に中間容器（７）を配置し、中間容器（７）に、接種剤（９）を添加するためのアクセス部（８）を設けた。The present invention comprises a casting furnace (1), a supply line (2) for a metal melt (3), a line (4) directed to a mold (5), and a supply part for applying gas pressure. (6) and an apparatus for low-pressure casting of a metal melt. An intermediate container (7) was placed between the mold (5) and the pipe line (4), and an access part (8) for adding the inoculum (9) was provided in the intermediate container (7).

Description

本発明は、鋳造炉と、融体のための供給管路と、鋳型に向けた管路と、ガス圧を加えるための供給部とを備える、金属融体を低圧鋳造するための装置に関する。   The present invention relates to an apparatus for low-pressure casting of a metal melt, comprising a casting furnace, a supply line for the melt, a pipe line directed to the mold, and a supply part for applying gas pressure.

低圧鋳造時には、炉内の金属融体にガス圧を加えることによって、融体は、重力に抗して鋳型キャビティ内の上昇管を通って圧送される。   During low pressure casting, the melt is pumped through the riser in the mold cavity against gravity by applying gas pressure to the metal melt in the furnace.

重力鋳造時には、核生成に起因して鋳造前に添加剤または接種剤を添加される融体は、型に進入する前に鋳込み流、タンディッシュおよびまたは型自体において処理される。   During gravity casting, melts that are added with additives or inoculants prior to casting due to nucleation are processed in the casting stream, tundish and / or the mold itself before entering the mold.

従来技術によれば、低圧鋳造時に型ランナー領域に小片状の接種剤を挿入し、型充填中に融解させることができる。この技術にしばしば結びつく欠点は、特に鋳型内の金属融体に接種剤が十分に分散しないことである。融体内の接種剤の異なった濃度により、鋳造部材の所望の特性と著しく異なってしまう場合がある。このような公知の技術では、接種剤の組成および溶液挙動の慎重な調整が必要となる。   According to the prior art, a small inoculum can be inserted into the mold runner region during low pressure casting and melted during mold filling. A drawback often associated with this technique is that the inoculum is not well dispersed, particularly in the metal melt in the mold. Different concentrations of the inoculum within the melt can significantly differ from the desired properties of the cast member. Such known techniques require careful adjustment of the inoculum composition and solution behavior.

本発明の課題は、これらの欠点を最小限にするために、低圧鋳造のための装置および方法を利用して、実際の型充填前に、既に接種剤量が一様に分散した状態で中間容器内の融体が提供されているようにすることである。   In order to minimize these drawbacks, the object of the present invention is to utilize an apparatus and method for low-pressure casting, and in the middle of the inoculum amount evenly distributed before the actual mold filling. It is to ensure that the melt in the container is provided.

この課題は、本発明によれば、鋳型と管路との間に中間容器が配置されており、接種剤を添加するためのアクセス部が中間容器に設けられていることにより解決される。   According to the present invention, this problem is solved by arranging the intermediate container between the mold and the conduit and providing the intermediate container with an access part for adding the inoculum.

鋳造炉と鋳型との間の中間容器に、接種剤を添加するための独立したアクセス部を設けるという選択肢により、正確に調整した接種剤量を簡単な方法により所望の時点で供給することを可能とする。   The option of providing a separate access to add the inoculant to the intermediate vessel between the casting furnace and mold allows the precisely adjusted amount of inoculant to be supplied at the desired time in a simple manner And

好ましい実施形態によれば、溢流壁が中間容器の内部に配置されている。有利には、中間壁の前に接種剤を注入した場合、特に流れによって融体内で接種剤が最適に分散されることが示された。   According to a preferred embodiment, the overflow wall is arranged inside the intermediate container. Advantageously, it has been shown that when the inoculum is injected in front of the intermediate wall, the inoculum is optimally dispersed within the melt, particularly by flow.

他の可能な実施形態が従属請求項に記載されている。   Other possible embodiments are described in the dependent claims.

例示的な実施形態を図面に示す。   Exemplary embodiments are shown in the drawings.

炉の断面図である。It is sectional drawing of a furnace.

鋳造炉１は、金属融体３を充填するための供給管路２を備える。供給管路２は、カバー１４によって閉鎖可能である。鋳造炉１には、融体にガス圧を与えるために供給部６が設けられている。さらに鋳造炉１には管路４が取り付けられており、管路４には中間容器７が直結している。中間容器７の上方には鋳型５が配置されており、鋳型５は、上昇管１３によって開口１１を通って中間容器７に接続されている。中間容器７に設けたアクセス部８には、接種剤９を添加するための管状の取付け具１５が取り付けられている。中間容器７の内部には、管路４の端部直後に配置した融体３のための溢流壁１０が設けられている。   The casting furnace 1 includes a supply pipe 2 for filling the metal melt 3. The supply line 2 can be closed by a cover 14. The casting furnace 1 is provided with a supply unit 6 for applying a gas pressure to the melt. Further, a pipe 4 is attached to the casting furnace 1, and an intermediate container 7 is directly connected to the pipe 4. A mold 5 is disposed above the intermediate container 7, and the mold 5 is connected to the intermediate container 7 through the opening 11 by the rising pipe 13. A tubular attachment 15 for adding the inoculum 9 is attached to the access portion 8 provided in the intermediate container 7. Inside the intermediate container 7, an overflow wall 10 for the melt 3 disposed immediately after the end of the conduit 4 is provided.

鋳造工程は次のように経過する。   The casting process proceeds as follows.

まず、供給管路２を通って鋳造炉１に金属融体３が充填される。鋳造炉１の充填後、供給管路２はカバー１４によってガス密に閉鎖される。圧力ｐ１、ｐ２およびｐ３は大気圧に相当する。中間容器に鉄を圧送するために、チャンバー１６がガス状媒体により加圧される。圧力ｐ１は、圧力ｐ２およびｐ３よりも大きい。融体は管路４および溢流壁１０を通過して中間容器７に流入し始める。同時に管状の取付け部１５から接種剤９が添加される。図１では、添加開口部は溢流壁１０と鋳型５との間に配置されている。同様に接種剤９を領域１７で、すなわち、溢流壁１０の上流側で添加することも考えられる。金属融体３の流れによって、接種剤９は金属融体３と均一に混合される。鋳型５を充填するために、高さΔＨに対応した圧力ｐ２を加える必要がある。   First, the metal melt 3 is filled into the casting furnace 1 through the supply pipe 2. After filling the casting furnace 1, the supply line 2 is gas tightly closed by a cover 14. The pressures p1, p2 and p3 correspond to atmospheric pressure. The chamber 16 is pressurized with a gaseous medium to pump iron into the intermediate container. The pressure p1 is larger than the pressures p2 and p3. The melt begins to flow into the intermediate container 7 through the pipe line 4 and the overflow wall 10. At the same time, the inoculum 9 is added from the tubular attachment portion 15. In FIG. 1, the addition opening is arranged between the overflow wall 10 and the mold 5. It is also conceivable to add the inoculum 9 in the region 17, i.e. upstream of the overflow wall 10. The inoculant 9 is uniformly mixed with the metal melt 3 by the flow of the metal melt 3. In order to fill the mold 5, it is necessary to apply a pressure p2 corresponding to the height ΔH.

型充填後、鋳型の外部に位置する融体が中間容器７に流れ戻ることができる程度にｐ２が降下される。   After mold filling, p2 is lowered to such an extent that the melt located outside the mold can flow back to the intermediate container 7.

１ 鋳造炉
２ 供給管路
３ 金属融体
４ 管路
５ 鋳型
６ 供給部
７ 中間容器
８ アクセス部
９ 接種剤
１０ 溢流壁
１１ 開口部
１３ 上昇管
１４ カバー
１５ 取付け部
１６ チャンバー
１７ 領域
ｐ１ 充填圧
ｐ２，ｐ３ 圧力
ΔＨ 高さ DESCRIPTION OF SYMBOLS 1 Casting furnace 2 Supply pipe 3 Metal melt 4 Pipe 5 Mold 6 Supply part 7 Intermediate container 8 Access part 9 Inoculum 10 Overflow wall 11 Opening part 13 Rising pipe 14 Cover 15 Attachment part 16 Chamber 17 area | region p1 Filling pressure p2, p3 pressure ΔH height

Claims (6)

鋳造炉（１）と、金属融体（３）のための供給管路（２）と、鋳型（５）に向けた管路（４）と、ガス圧を与えるための供給部（６）とを備える、金属融体を低圧鋳造するための装置において、
前記鋳型（５）と前記管路（４）との間に中間容器（７）が配置されており、
該中間容器（７）に、接種剤（９）を添加するためのアクセス部（８）が設けられていることを特徴とする装置。 A casting furnace (1), a supply line (2) for the metal melt (3), a line (4) towards the mold (5), and a supply part (6) for applying gas pressure; An apparatus for low pressure casting of a metal melt comprising:
An intermediate container (7) is disposed between the mold (5) and the pipe line (4),
The intermediate container (7) is provided with an access part (8) for adding the inoculum (9). 請求項１に記載の装置において、
前記中間容器（７）に溢流壁（１０）が配置されている装置。 The apparatus of claim 1.
An apparatus in which an overflow wall (10) is arranged in the intermediate container (7). 請求項１または２に記載の装置において、
前記接種剤（９）のための前記アクセス部（８）が、前記溢流壁（１０）の上流側に配置されている装置。 The apparatus according to claim 1 or 2,
Device in which the access part (8) for the inoculum (9) is arranged upstream of the overflow wall (10). 請求項１から３までのいずれか一項に記載の装置において、
前記中間容器（７）が開口部（１１）を有し、上昇管（１３）が、開口部（１１）を通って中間容器の内部に配置されており、前記鋳型（５）が前記開口部（１１）の上方で上昇管（１３）に直結されている装置。 The device according to any one of claims 1 to 3,
The intermediate container (7) has an opening (11), a riser pipe (13) is disposed inside the intermediate container through the opening (11), and the mold (5) is the opening. Device directly connected to the riser (13) above (11). 請求項１から４までの装置請求項のいずれか一項に記載のように金属融体を低圧鋳造するための方法において、
鋳造炉（１）と鋳型（５）との間に配置した中間容器（７）に位置する金属融体（３）に接種剤（９）を添加することを特徴とする方法。 A method for low-pressure casting of a metal melt as claimed in any one of the claims 1 to 4,
A method comprising adding an inoculum (9) to a metal melt (3) located in an intermediate container (7) disposed between a casting furnace (1) and a mold (5). 請求項５に記載の方法において、
前記接種剤（９）を顆粒の形態で添加する方法。 The method of claim 5, wherein
A method of adding the inoculum (9) in the form of granules.
JP2010531542A 2007-11-06 2008-11-04 Apparatus and method for low pressure casting of a metal melt Withdrawn JP2011502787A (en)

Applications Claiming Priority (2)

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EP07120039A EP2060340A1 (en) 2007-11-06 2007-11-06 Device and method for low pressure die casting of metal melts
PCT/EP2008/064895 WO2009059952A1 (en) 2007-11-06 2008-11-04 Device and method for low-pressure casting of metal melts

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KR101962871B1 (en) * 2017-11-02 2019-03-28 삼영기계(주) Inoculator

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CN106392040A (en) * 2016-11-26 2017-02-15 中信戴卡股份有限公司 Communicating vessel type low-pressure casting holding furnace suitable for mold filling using mechanical pump

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Publication number Priority date Publication date Assignee Title
WO2016009522A1 (en) * 2014-07-17 2016-01-21 株式会社トウネツ Two chamber molten metal holding furnace for low-pressure casting
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KR101962871B1 (en) * 2017-11-02 2019-03-28 삼영기계(주) Inoculator

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WO2009059952A1 (en) 2009-05-14
US20100230066A1 (en) 2010-09-16
EP2060340A1 (en) 2009-05-20

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