JPH06238416A - Method for casting magnesium alloy - Google Patents
Method for casting magnesium alloyInfo
- Publication number
- JPH06238416A JPH06238416A JP5483593A JP5483593A JPH06238416A JP H06238416 A JPH06238416 A JP H06238416A JP 5483593 A JP5483593 A JP 5483593A JP 5483593 A JP5483593 A JP 5483593A JP H06238416 A JPH06238416 A JP H06238416A
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- injection
- hot water
- plunger
- water supply
- 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】本発明はマグネシウム合金の鋳造
法に関する。FIELD OF THE INVENTION The present invention relates to a method for casting a magnesium alloy.
【0002】[0002]
【従来技術】従来のマグネシウム合金用のダイカストマ
シンにおいては、図8に示す縦型ダイカストマシン40
の場合、型開後、移動金型41を固定金型42に対して
上部に移動後、図示せぬ取り出し装置に取り付けられ、
不活性ガスを放出するパイプ47が固定金型42の中央
に嵌挿される射出スリーブ43の開口部に移動する。パ
イプ47からは射出スリーブ43を通して不活性ガス、
例えばSF6が射出スリーブ43の側端部に貫通する配
湯管45内のマグネシウム合金の溶湯46上に放出さ
れ、溶湯46の空気との接触を防いでいる。2. Description of the Related Art In a conventional die casting machine for magnesium alloy, a vertical die casting machine 40 shown in FIG.
In the case of, after moving the mold, the movable mold 41 is moved to the upper part with respect to the fixed mold 42, and then attached to a take-out device (not shown),
The pipe 47 that discharges the inert gas moves to the opening of the injection sleeve 43 that is fitted in the center of the fixed mold 42. Inert gas from the pipe 47 through the injection sleeve 43,
For example, SF6 is discharged onto the molten magnesium alloy molten metal 46 in the molten metal distribution pipe 45 penetrating the side end of the injection sleeve 43 to prevent the molten molten metal 46 from contacting the air.
【0003】図9に示す横型ダイカストマシン50の場
合、固定ダイプレート51と、これに嵌挿する射出スリ
ーブ52を覆い、内部に不活性ガスを充満保持するカバ
ー56、及びカバー56内部に、不活性ガスを導入する
パイプ57が設けられている。射出スリーブ52の上端
部には不活性ガス通過のための穴53が設けられてお
り、不活性ガスがパイプ57、カバー56、及び穴53
を通して、射出スリーブ52に開口する配湯管54内の
マグネシウム合金の溶湯55上に常時放出され、溶湯5
5の空気との接触を防いでいる。In the case of the horizontal die casting machine 50 shown in FIG. 9, a fixed die plate 51 and a cover 56 which covers the injection sleeve 52 fitted therein and which holds the inert gas therein, and the inside of the cover 56 are covered with an inert gas. A pipe 57 for introducing active gas is provided. A hole 53 for passing an inert gas is provided at an upper end portion of the injection sleeve 52, and the inert gas is filled with the pipe 57, the cover 56, and the hole 53.
Through which the molten metal 5 is constantly discharged onto the molten magnesium alloy 55 in the hot water distribution pipe 54 opening to the injection sleeve 52.
5 prevents contact with air.
【0004】[0004]
【発明が解決しようとする課題】ところが、常時の不活
性ガスの補給には多大の費用及び労力を要し、又金型の
離型剤やプランジャ潤滑剤がマグネシウム溶湯に触れる
と発火する危険があるため、これに対しても多大の注意
を払わねばならず、更に、不活性ガスの拡散を防ぐた
め、上に述べたカバー等の補助具も必要であった。However, replenishment of the inert gas at all times requires a great deal of expense and labor, and there is a risk of ignition when the mold release agent or the plunger lubricant contacts the molten magnesium. For this reason, a great deal of attention must be paid also to this, and in addition, the above-mentioned auxiliary equipment such as the cover is necessary to prevent the diffusion of the inert gas.
【0005】本発明は毎ショット、及び常時不活性ガス
をマグネシウム溶湯上に補給しなくとも良く、金型の離
型剤やプランジャ潤滑剤による発火の危険性がなく、カ
バー等の補助具の必要のないマグネシウム合金の鋳造法
を提供することを目的とする。According to the present invention, it is not necessary to replenish the molten magnesium with the inert gas every shot and at all times, there is no danger of ignition due to the mold release agent or the plunger lubricant, and auxiliary tools such as a cover are required. It is an object of the present invention to provide a magnesium alloy casting method that does not include
【0006】[0006]
【課題を解決するための手段】前述の目的を解決するた
めに本発明は電磁ポンプにより、溶湯を射出プランジャ
を進退自在に挿入された射出スリーブ内に給湯口を介し
て供給し、前記射出プランジャにより、金型キャビティ
内に射出するマグネシウム合金用ダイカストマシンの鋳
造方法において、鋳造工程中の鋳造時の給湯時以外は前
記射出スリーブへの給湯口を前記射出プランジャにて塞
ぐことを特徴とするマグネシウム合金鋳造法とした。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention uses an electromagnetic pump to supply molten metal into an injection sleeve into which an injection plunger is inserted so that the injection plunger can advance and retreat through a hot water supply port. According to the method of casting a magnesium alloy die casting machine for injecting into a mold cavity, the hot water supply port to the injection sleeve is closed by the injection plunger except during hot water supply during casting during the casting process. The alloy casting method was used.
【0007】[0007]
【作用】鋳造中の給湯時以外は前記射出スリーブへの給
湯口を前記射出スリーブ内を嵌挿する射出プランジャに
て塞ぐ。The hot water supply port to the injection sleeve is closed by an injection plunger inserted into the injection sleeve except during hot water supply during casting.
【0008】[0008]
【実施例】以下本発明の実施例を横型締め、縦射出ダイ
カストマシンを例に採り、図1で説明する。1はダイカ
ストマシンの型締め装置を示すもので、横方向に型締め
される固定金型2と移動金型3を備えており、固定金型
2は固定ダイプレート4に、移動金型3は移動ダイプレ
ート5にそれぞれ取り付けられている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. 1 by taking a vertical injection die casting machine as an example. Reference numeral 1 denotes a die clamping machine of a die casting machine, which includes a fixed die 2 and a movable die 3 which are laterally clamped. The fixed die 2 is fixed to a fixed die plate 4 and the movable die 3 is Each is attached to the moving die plate 5.
【0009】固定金型2と移動金型3との分割面には射
出スリーブ8の一端が嵌合固定され、他端部が下方に向
かって突出している。この射出スリーブ8は一体形でも
2つ割りでも良く、一体形の場合には固定型2に取り付
けられ、2つ割りの場合は片方が固定型2に、他方は移
動型3に取り付けられる。なお本実施例では2つ割スリ
ーブを使用した。又射出スリーブ8内に、給湯された溶
湯を固定金型2と移動金型3間に形成されるキャビティ
9内に射出する射出プランジャ22が進退自在に設けら
れている。One end of the injection sleeve 8 is fitted and fixed to the split surface between the fixed mold 2 and the movable mold 3, and the other end projects downward. The injection sleeve 8 may be of a one-piece type or of a two-piece type. In the case of the one-piece type, it is attached to the fixed die 2, and in the case of two pieces, one is attached to the fixed die 2 and the other is attached to the movable die 3. In this example, a split sleeve was used. In addition, an injection plunger 22 is provided in the injection sleeve 8 so as to be capable of advancing and retracting so as to inject the molten metal into a cavity 9 formed between the fixed mold 2 and the moving mold 3.
【0010】射出スリーブ8には、移動下限にある射出
プランジャ22の上端より上の位置には給湯口10が開
口し、この給湯口10に接続される給湯管11が下方に
延びる給湯管12および水平な給湯管13を通して外部
の溶湯保持炉20に連通されており、溶湯保持炉20内
の溶湯が電磁ポンプ14により射出スリーブ8内に供給
される。A hot water supply port 10 is opened in the injection sleeve 8 at a position above the upper end of the injection plunger 22 at the lower limit of movement, and a hot water supply pipe 11 connected to the hot water supply port 10 extends downward. The molten metal in the molten metal holding furnace 20 is communicated with the external molten metal holding furnace 20 through a horizontal molten metal supply pipe 13, and the molten metal in the molten metal holding furnace 20 is supplied into the injection sleeve 8 by the electromagnetic pump 14.
【0011】溶湯保持炉20内の溶湯21は自動調整に
より液面を常時一定に維持され、その高さは縦方向の給
湯管12の中間位置に設定されており、給湯管13ない
し給湯管12までの区間には溶湯保持炉20の溶湯21
が自然流入されている。なお、給湯管12、13を取り
巻くようにヒータ23が設置され、給湯管12、13内
の溶湯21はヒータ23で加熱されて溶融状態に保持可
能である。The molten metal 21 in the molten metal holding furnace 20 has its liquid level constantly maintained by automatic adjustment, and its height is set at an intermediate position of the vertical hot water supply pipe 12, and the hot water supply pipe 13 or 12 The molten metal 21 of the molten metal holding furnace 20
Is naturally flowing. A heater 23 is installed so as to surround the hot water supply pipes 12 and 13, and the molten metal 21 in the hot water supply pipes 12 and 13 can be heated by the heater 23 and held in a molten state.
【0012】このように構成された本実施例において
は、次のような手順で鋳造作業を行う。まず、待機状態
として、固定金型2と移動金型3を型締めしておき、溶
湯保持炉20からのマグネシウム合金の溶湯21を給湯
管13から給湯管12の途中まで導入し、ヒータ23に
より溶融状態に維持しておく(図1)。In this embodiment thus constructed, the casting operation is carried out in the following procedure. First, in a standby state, the fixed mold 2 and the movable mold 3 are clamped, and the molten magnesium alloy melt 21 from the molten metal holding furnace 20 is introduced from the hot water supply pipe 13 to a midpoint of the hot water supply pipe 12, and is heated by the heater 23. It is kept molten (Fig. 1).
【0013】次に、給湯工程として、射出プランジャ2
2を下限位置まで下降させ、射出プランジャ22による
給湯口10の閉塞を解除した後、予め設定した給湯時間
だけ電磁ポンプ14を作動させ、給湯管13内の溶湯2
1を順方向に移送する。これにより、溶湯保持炉20か
ら順次補給される溶湯21は給湯管13〜11および射
出スリーブ8内に流入する(図2)。Next, as a hot water supply step, the injection plunger 2
2 is lowered to the lower limit position, the hot water supply port 10 is released from the injection plunger 22, and then the electromagnetic pump 14 is operated for a preset hot water supply time.
1 is transferred in the forward direction. As a result, the molten metal 21 sequentially replenished from the molten metal holding furnace 20 flows into the molten metal supply pipes 13 to 11 and the injection sleeve 8 (FIG. 2).
【0014】続いて、射出工程として、射出プランジャ
22を予め設定した射出時間だけ作動させ、下限位置か
ら上限位置まで移動させ、射出スリーブ8内に計量した
溶湯をキャビティ9内に注入させるとともに、射出プラ
ンジャ22で、給湯口10を塞ぐ。なお製品取り出し工
程、及び次の成形作業に備えるべき待機状態の間まで、
射出プランジャ22の射出スリーブ8内での位置は給湯
口10を塞ぐ位置となる(図3)。Subsequently, as an injection step, the injection plunger 22 is operated for a preset injection time, moved from the lower limit position to the upper limit position, and the molten metal measured in the injection sleeve 8 is injected into the cavity 9 and is injected. The plunger 22 closes the hot water supply port 10. In addition, until the product removal process and the standby state that should be prepared for the next molding operation,
The position of the injection plunger 22 in the injection sleeve 8 is a position where the hot water supply port 10 is closed (FIG. 3).
【0015】次に保圧工程として、電磁ポンプ14の励
磁を切って給湯管11に残った溶湯は自重により逆流さ
せるか、または電磁ポンプ14を逆方向に移送する。こ
れにより、溶湯21の液面は給湯管12の中間位置に保
持される(図4)。Next, as a pressure-holding step, the electromagnetic pump 14 is de-excited and the molten metal remaining in the hot water supply pipe 11 is caused to flow backward by its own weight, or the electromagnetic pump 14 is transferred in the opposite direction. As a result, the liquid level of the molten metal 21 is held at the intermediate position of the hot water supply pipe 12 (FIG. 4).
【0016】これらの作業の後、固定金型2と移動金型
3の型開工程として、射出プランジャ22を、ダイカス
ト製品17より離反させるために、わずかに下降させる
が、射出プランジャ22の位置は給湯口10を塞ぐ位置
のままである。次に移動金型3を図中左行させると、キ
ャビティ9内に成形されたダイカスト製品17、および
射出スリーブ8の片方は共に移動金型3に固定されたま
ま、固定金型2より分離する(図5)(図6)。After these operations, as a mold opening process of the fixed mold 2 and the movable mold 3, the injection plunger 22 is slightly lowered to separate from the die cast product 17, but the position of the injection plunger 22 is changed. It remains at the position where the hot water supply port 10 is closed. Next, when the movable mold 3 is moved to the left in the figure, the die-cast product 17 molded in the cavity 9 and one of the injection sleeve 8 are separated from the fixed mold 2 while being fixed to the movable mold 3 together. (FIG. 5) (FIG. 6).
【0017】次に製品取り出し行程として、図示せぬ押
し出しピン、及び製品取り出し装置によりダイカスト製
品17を押し出し、ダイカストマシン1外に取り出す
(図7)。Next, as a product take-out step, the die-cast product 17 is pushed out by a push-out pin and a product take-out device (not shown) and taken out of the die-casting machine 1 (FIG. 7).
【0018】一連の給湯行程から製品取り出し行程まで
の作業を終えると、ダイカストマシン1は次の成形作業
に備えるべく待機状態に戻る(図1)。When the work from the hot water supply process to the product removal process is completed, the die casting machine 1 returns to the standby state in preparation for the next molding operation (FIG. 1).
【0019】以上に述べたように、本実施例によれば、
射出行程から最後の製品取り出し行程、及び次の成形作
業に備えるべき待機状態の間まで、射出プランジャ22
の射出スリーブ8内での位置は給湯口10を塞ぐ位置と
することにより、マグネシウム合金の溶湯と空気、固定
金型2と移動金型3の型開行程の際使用される離型剤、
及び射出行程の際使用される射出スリーブ8と射出プラ
ンジャ22間のプランジャ潤滑剤との接触はほとんどな
い。As described above, according to this embodiment,
From the injection stroke to the final product removal stroke, and during the standby state to prepare for the next molding operation, the injection plunger 22
By setting the position of the injection sleeve 8 in the injection sleeve 8 so as to close the hot water supply port 10, the molten magnesium alloy and air, the release agent used during the mold opening process of the fixed mold 2 and the moving mold 3,
And there is almost no contact with the plunger lubricant between the injection sleeve 8 and the injection plunger 22 used during the injection stroke.
【0020】このため不活性ガスを空気との反応が激し
いマグネシウム合金の溶湯上に補給しなくとも良く、離
型剤やプランジャ潤滑剤と溶湯の接触による発火の危険
性もない。また不活性ガスを充満保持するカバー等の補
助具の必要もない。For this reason, it is not necessary to replenish the inert gas onto the molten magnesium alloy, which reacts strongly with air, and there is no danger of ignition due to contact between the mold release agent or the plunger lubricant and the molten metal. Further, there is no need for auxiliary equipment such as a cover for holding the inert gas.
【0021】なお、本発明は前記実施例に限定されるも
のではなく、特に給湯には電磁ポンプを使用したが、こ
れに係わらず、プランジャ、真空を利用した給湯方式と
してもよい。The present invention is not limited to the above-described embodiment, and in particular, an electromagnetic pump was used for hot water supply, but a hot water supply system using a plunger or vacuum may be used regardless of this.
【0022】[0022]
【発明の効果】以上に述べたように、本発明によれば、
毎ショット、及び常時不活性ガスを溶湯上に補給しなく
とも良く、発火の危険性がなく、カバー等の補助具の必
要のないマグネシウム合金の鋳造法を得ることができ
る。As described above, according to the present invention,
It is not necessary to supply an inert gas to the molten metal every shot and constantly, there is no risk of ignition, and a magnesium alloy casting method that does not require auxiliary tools such as a cover can be obtained.
【図1】実施例の動作を示す断面図である。FIG. 1 is a cross-sectional view showing the operation of the embodiment.
【図2】実施例の動作を示す断面図である。FIG. 2 is a sectional view showing the operation of the embodiment.
【図3】実施例の動作を示す断面図である。FIG. 3 is a cross-sectional view showing the operation of the embodiment.
【図4】実施例の動作を示す断面図である。FIG. 4 is a sectional view showing the operation of the embodiment.
【図5】実施例の動作を示す断面図である。FIG. 5 is a cross-sectional view showing the operation of the embodiment.
【図6】実施例の動作を示す断面図である。FIG. 6 is a cross-sectional view showing the operation of the embodiment.
【図7】実施例の動作を示す断面図である。FIG. 7 is a cross-sectional view showing the operation of the embodiment.
【図8】従来例を示す概略断面図である。FIG. 8 is a schematic cross-sectional view showing a conventional example.
【図9】従来例を示す概略断面図である。FIG. 9 is a schematic cross-sectional view showing a conventional example.
1 ダイカストマシン 2 固定金型 3 移動金型 8 射出スリーブ 9 キャビティ 10 給湯口 14 電磁ポンプ 17 ダイカスト製品 20 溶湯保持炉 21 溶湯 22 射出プランジャ 23 ヒータ 1 Die Casting Machine 2 Fixed Die 3 Moving Die 8 Injection Sleeve 9 Cavity 10 Hot Water Supply Port 14 Electromagnetic Pump 17 Die Casting Product 20 Melt Holding Furnace 21 Molten Metal 22 Injection Plunger 23 Heater
Claims (1)
ャを進退自在に挿入された射出スリーブ内に給湯口を介
して供給し、前記射出プランジャにより金型キャビティ
内に射出するマグネシウム合金用ダイカストマシンの鋳
造方法において、鋳造工程中の鋳造時の給湯時以外は前
記射出スリーブへの給湯口を前記射出プランジャにて塞
ぐことを特徴とするマグネシウム合金鋳造法。1. A casting of a magnesium alloy die casting machine in which a molten metal is supplied by an electromagnetic pump into an injection sleeve in which an injection plunger is inserted and retracted through a hot water supply port, and is injected into a mold cavity by the injection plunger. In the method, a magnesium alloy casting method is characterized in that a hot water supply port to the injection sleeve is closed by the injection plunger except during hot water supply during casting during a casting process.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5483593A JPH06238416A (en) | 1993-02-19 | 1993-02-19 | Method for casting magnesium alloy |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5483593A JPH06238416A (en) | 1993-02-19 | 1993-02-19 | Method for casting magnesium alloy |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH06238416A true JPH06238416A (en) | 1994-08-30 |
Family
ID=12981698
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5483593A Pending JPH06238416A (en) | 1993-02-19 | 1993-02-19 | Method for casting magnesium alloy |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH06238416A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008254045A (en) * | 2007-04-06 | 2008-10-23 | Toyo Mach & Metal Co Ltd | Molten metal molding apparatus |
CN101934363A (en) * | 2010-09-02 | 2011-01-05 | 许小忠 | Lower-pressure casting type high-pressure solidification molding system by using magnesium alloy hub electromagnetic pump |
CN102773453A (en) * | 2011-05-10 | 2012-11-14 | 吴江市天龙机械有限公司 | Process for casting spacecraft amplifier shell |
CN103468988A (en) * | 2013-09-14 | 2013-12-25 | 天津六合镁制品有限公司 | Preparation method of magnesium alloy |
-
1993
- 1993-02-19 JP JP5483593A patent/JPH06238416A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008254045A (en) * | 2007-04-06 | 2008-10-23 | Toyo Mach & Metal Co Ltd | Molten metal molding apparatus |
CN101934363A (en) * | 2010-09-02 | 2011-01-05 | 许小忠 | Lower-pressure casting type high-pressure solidification molding system by using magnesium alloy hub electromagnetic pump |
CN102773453A (en) * | 2011-05-10 | 2012-11-14 | 吴江市天龙机械有限公司 | Process for casting spacecraft amplifier shell |
CN103468988A (en) * | 2013-09-14 | 2013-12-25 | 天津六合镁制品有限公司 | Preparation method of magnesium alloy |
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