JPS61216848A - Pouring device for casting - Google Patents
Pouring device for castingInfo
- Publication number
- JPS61216848A JPS61216848A JP5747085A JP5747085A JPS61216848A JP S61216848 A JPS61216848 A JP S61216848A JP 5747085 A JP5747085 A JP 5747085A JP 5747085 A JP5747085 A JP 5747085A JP S61216848 A JPS61216848 A JP S61216848A
- Authority
- JP
- Japan
- Prior art keywords
- molten metal
- casting
- electrodes
- mold
- joule heat
- 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.)
- Granted
Links
Landscapes
- Continuous Casting (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、主として、カーテンウオールやレリーフ等の
薄肉大面積の板状長尺製品を鋳造する場合の鋳込装置に
関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention mainly relates to a casting apparatus for casting thin-walled, large-area plate-like long products such as curtain walls and reliefs.
−ｍに、アルミニウム、アルミニウム系合金、銅、銅系
合金、鋳鉄、鋳鋼などの材料を用いて鋳造する場合、こ
の金属材料を所定温度に加熱溶融したのち、この溶湯を
鋳型の鋳込空間内に注入する鋳込手段が採られている。- When casting materials such as aluminum, aluminum alloys, copper, copper alloys, cast iron, cast steel, etc., the metal material is heated and melted to a predetermined temperature, and then the molten metal is poured into the casting space of the mold. A method of injecting the metal into the metal is used.
この従来の鋳込手段による場合は、鋳込空間内に鋳込ま
れる溶湯が鋳型との熱交換によって冷却されるため、こ
れに伴って溶湯の流動長も短くなる。殊に、その体積の
割に大きな表面積をもつ薄物鋳造品の場合では、溶湯の
冷却速度が非常に早いため、鋳造品の薄肉化及び長尺化
に自ずと限界があった。In the case of this conventional casting means, the molten metal poured into the casting space is cooled by heat exchange with the mold, and the flow length of the molten metal is accordingly shortened. In particular, in the case of thin cast products that have a large surface area relative to their volume, the cooling rate of the molten metal is very fast, so there is a natural limit to how thin and long the cast product can be made to be.
本発明は、上述の実情に鑑みて開発されたものであって
、その目的は、設備面での構造の簡素化を図りつつ、か
つ、周辺電気機器への悪影響を極力排除し乍ら、鋳物界
の薄肉長尺化を達成することができるようにする点にあ
る。The present invention was developed in view of the above-mentioned circumstances, and its purpose is to simplify the structure in terms of equipment, eliminate as much as possible the negative impact on peripheral electrical equipment, The purpose of this invention is to make it possible to achieve thinner and longer walls in the field.
本発明による鋳造用鋳込装置の特徴構成は、鋳型の鋳込
み空間形成面に、鋳込空間に鋳込まれる溶湯にジュール
熱を生起させる状態に電極を設けた点にあり、その作用
・効果は次の通りである。The characteristic configuration of the casting device according to the present invention is that an electrode is provided on the casting space forming surface of the mold to generate Joule heat in the molten metal poured into the casting space. It is as follows.
鋳型の鋳込空間形成面に設けられた電極に、例えば、低
電圧の高電流を流すことにより、この鋳込空間内に鋳込
まれる溶湯を抵抗体として直接利用して、通電した電気
エネルギーをジュール熱として熱エネルギーに変換する
ことができるから、このジュール熱をもって鋳込空間に
鋳込まれる溶湯を加熱して、この溶湯の流動性を高い状
態に維持することができる。For example, by passing a low voltage and high current through an electrode provided on the casting space forming surface of the mold, the molten metal poured into the casting space can be used directly as a resistor to absorb the electrical energy. Since it can be converted into thermal energy as Joule heat, the molten metal poured into the casting space can be heated with this Joule heat, and the fluidity of the molten metal can be maintained in a high state.
しかも、電気エネルギーの熱エネルギーへの変換手段が
直接式抵抗加熱方法であるが故に、例えば、誘導加熱方
法や誘電加熱方法に比して、高周波発生装置等のイニシ
ャルコストを低減することができ、かつ、電気エネルギ
ーの熱エネルギーへの変換ロスを少なくすることができ
るばかりでなく、鋳型の外周に強磁界が発生することも
なく、その上、鋳型側には電極を設けるだけでよいから
、各種の鋳型形状に簡単に対応することができる。Moreover, since the means for converting electrical energy into thermal energy is a direct resistance heating method, the initial cost of a high frequency generator etc. can be reduced compared to, for example, an induction heating method or a dielectric heating method. In addition, not only can the conversion loss of electrical energy into thermal energy be reduced, but a strong magnetic field will not be generated around the outer periphery of the mold.Furthermore, since it is only necessary to provide an electrode on the mold side, various types of It can easily correspond to the shape of the mold.
従って、鋳型との熱交換に伴う溶湯の冷却に起因する流
動性の低下を抑制することができるから、従来に比して
鋳物品の薄肉長尺化を達成することができる。しかも、
誘導加熱方法や誘電加熱方法に比較して、設備面での一
造の簡素化及び汎用化を図りつつ、かつ、周辺電気機器
への悪影響を極力排除し乍ら前述の効果を達成すること
ができるに至ったのである。Therefore, it is possible to suppress a decrease in fluidity due to cooling of the molten metal due to heat exchange with the mold, and thus it is possible to achieve thinner and longer castings than in the past. Moreover,
Compared to the induction heating method and the dielectric heating method, it is possible to achieve the above-mentioned effects while simplifying the equipment and making it more versatile, and while minimizing the negative impact on peripheral electrical equipment. We have now been able to do it.
以下、本発明の実施例を図面に基づいて説明する。 Embodiments of the present invention will be described below based on the drawings.
（１）は、適宜の鋳物砂を用いて形成された上型（１ａ
）と下型（１ｂ）とを備えた鋳型であり、これら両型（
ｌａ） 、 （ｌｂ）の砂層に鋳込空間（１ｃ）及びこ
の鋳込空間（ｌｃ）に連通ずる湯口（１ｄ）を形成して
いる。(1) is an upper mold (1a) formed using appropriate foundry sand.
) and a lower mold (1b), and both of these molds (
A casting space (1c) and a sprue (1d) communicating with this casting space (lc) are formed in the sand layer of la) and (lb).
（２ａ） 、 （２ｂ）・・は、制御装置（３）によっ
て制御される加熱用トランス（４）に接続された複数対
の電極であり、これら電極（２ａ） 、 （２ｂ）・・
は、前記鋳型（１）の鋳込空間（１ｃ）形成面の、鋳造
品の肉厚方向に対して直交又はほぼ直交方向で相対向す
る箇所に、鋳込空間（１ｃ）形成面と面−又はほぼ面一
状態で設けられている。(2a), (2b)... are multiple pairs of electrodes connected to a heating transformer (4) controlled by a control device (3), and these electrodes (2a), (2b)...
The casting space (1c) forming surface and the surface- Or they are provided almost flush.
そして、前記鋳型（１）の鋳込空間（１ｃ）形成面に設
けられた複数対の電極（２ａ） 、 （２ｂ）・・に、
低電圧の高電流、例えば、８Ｖ−１０数Ｖ、１万Ａの電
流を流すことにより、この鋳込空間（１ｃ）内に鋳込ま
れる溶湯を抵抗体として直接利用して、通電した電気エ
ネルギーをジュール熱として熱エネルギーに効率良く変
換することができるから、このジュール熱をもって鋳込
空間（１ｃ）に鋳込まれる溶湯を加熱して、溶湯の流動
性を高い状態に維持することができる。Then, a plurality of pairs of electrodes (2a), (2b), etc. provided on the casting space (1c) forming surface of the mold (1),
By passing a low-voltage high current, for example, 8V-10-several V, 10,000A current, the molten metal poured into this casting space (1c) is directly used as a resistor to generate electric energy. can be efficiently converted into thermal energy as Joule heat, so the molten metal poured into the casting space (1c) can be heated with this Joule heat, and the fluidity of the molten metal can be maintained in a high state.
しかも、前記電極（２ａ） 、 （２ｂ）・・を、鋳造
品の横断面積が小さくなる鋳造品肉厚方向に対して直交
又はほぼ直交する方向に対向配設しであるが故に、換言
すれば、電気抵抗が大となる方向で対向配設しであるが
故に、電気エネルギーの熱エネルギーへの変換効率を更
に向上することができる。Moreover, since the electrodes (2a), (2b), etc. are disposed facing each other in a direction perpendicular or almost perpendicular to the thickness direction of the cast product, in which the cross-sectional area of the cast product becomes smaller, in other words, , are disposed facing each other in the direction of increasing electrical resistance, so that the efficiency of converting electrical energy into thermal energy can be further improved.
それ故に、カーテンウオールやレリーフ等の薄肉大面積
の板状長尺製品を自由に鋳造することができるのである
。Therefore, thin, large-area, long plate products such as curtain walls and reliefs can be freely cast.
また、上述の実施例のように、鋳型（１）として砂型を
使用した場合には、この鋳物砂のもつ絶縁性を利用して
、前記電極（２ａ） 、 （２ｂ）・・に対する絶縁処
理を簡単かつ経済的に行うことができる利点がある。In addition, when a sand mold is used as the mold (1) as in the above embodiment, the insulating properties of the foundry sand are used to insulate the electrodes (2a), (2b), etc. It has the advantage that it can be done easily and economically.
更に、上述の実施例のように、前記電極（２ａ）。Furthermore, as in the embodiments described above, said electrode (2a).
（２ｂ）を複数対に分割することにより、例えば、第４
図で示すように、前記鋳込空間（１ｃ）が湾曲している
場合でも、電極（２ａ） 、 （２ｂ）を湾曲状の鋳込
空間形成面に沿って容易に配置することができる利点が
ある。(2b) into multiple pairs, e.g.
As shown in the figure, even when the casting space (1c) is curved, there is an advantage that the electrodes (2a) and (2b) can be easily arranged along the curved casting space forming surface. be.
次に、別の実施例について説明する。Next, another example will be described.
（イ）前記電極（２ａ） 、 （２ｂ）・・に通電する
電流値を鋳込空間（ｌｃ）の形状や鋳込金属の種類など
に応じて変更自在に構成する。このような電流値の変更
は人為操作によって行ってもよいがマイクロコンピュー
タ−などによって自動的に行うべく構成してもよい。(a) The current value applied to the electrodes (2a), (2b), etc. can be changed according to the shape of the casting space (lc), the type of metal to be cast, etc. Such changes in current values may be performed manually, but may also be configured to be performed automatically by a microcomputer or the like.
（■）前記鋳型（１）として、上述の実施例では砂型を
使用したが、これに限定されるものではなく、例えば、
セラミックなどから構成した鋳型を用いて実施してもよ
い。(■) Although a sand mold was used as the mold (1) in the above embodiment, it is not limited to this, for example,
It may also be carried out using a mold made of ceramic or the like.
（ハ）上述の実施例では、直接式抵抗加熱方法のみを用
いたが、場合によっては誘導加熱方法や誘電加熱方法と
併用して実施してもよい。(c) In the above-mentioned embodiments, only the direct resistance heating method was used, but depending on the case, an induction heating method or a dielectric heating method may be used in combination.
更に、前記鋳型（１）の内面に、溶湯の温度で発熱反応
を生じる発熱剤を塗布する方法を併用して実施してもよ
い。Furthermore, a method of applying an exothermic agent that causes an exothermic reaction at the temperature of the molten metal to the inner surface of the mold (1) may be used in combination.
この発熱剤としては、アルミニウムのごとき易酸化性金
属、酸化鉄のごとき酸化剤、塩化バリウム、塩素酸カリ
ウム、マグネシウム等からなる発熱促進剤と、けい素あ
るいはシャモット等の耐火材料とを適量ずつ混練して・
テルミット反応による発熱を生じるように構成する。The exothermic agent is made by mixing an appropriate amount of an easily oxidizable metal such as aluminum, an oxidizing agent such as iron oxide, an exothermic accelerator made of barium chloride, potassium chlorate, magnesium, etc., and a refractory material such as silicon or chamotte. do·
It is configured to generate heat due to thermite reaction.
第１図乃至第３図は本発明に係る鋳造用鋳込装置の実施
例を示し、第１図は一部切欠き平面図、第２図は第１図
の■−■線断面図、第３図は第１図の■−■線断面図で
ある。第４図は別の実施例を示す概略横断平面図である
。
（１）・・・・・・鋳型、（１ｃ）・・・・・・鋳込空
間、（２ａ） 、 （２ｂ）・・・・・・電極。1 to 3 show an embodiment of the casting apparatus according to the present invention, in which FIG. 1 is a partially cutaway plan view, FIG. 2 is a sectional view taken along the line ■-■ in FIG. FIG. 3 is a sectional view taken along the line ■--■ in FIG. FIG. 4 is a schematic cross-sectional plan view showing another embodiment. (1)...mold, (1c)...casting space, (2a), (2b)...electrode.
Claims (1)
ｃ）に鋳込まれる溶湯にジュール熱を生起させる状態に
電極（２ａ）、（２ｂ）を設けてある鋳造用鋳込装置。 ［２］前記電極（２ａ）、（２ｂ）が鋳造製品の肉厚方
向に対して直交する方向に対向配設されたものである特
許請求の範囲第［１］項に記載の鋳造用鋳込装置。 ［３］前記電極（２ａ）、（２ｂ）が複数対の電極から
構成されたものである特許請求の範囲第［１］項に記載
の鋳造用鋳込装置。 ［４］前記鋳型（１）が砂型である特許請求の範囲第［
１］項に記載の鋳造用鋳込装置。[Claims] [1] A casting space (1) is formed on the casting space forming surface of the mold (1).
c) A casting apparatus for casting, in which electrodes (2a) and (2b) are provided in a state that generates Joule heat in the molten metal to be cast. [2] The casting according to claim 1, wherein the electrodes (2a) and (2b) are disposed facing each other in a direction perpendicular to the thickness direction of the cast product. Device. [3] The casting device for casting according to claim [1], wherein the electrodes (2a) and (2b) are composed of a plurality of pairs of electrodes. [4] Claim No. [4] The mold (1) is a sand mold.
1] The casting device for casting described in item 1].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60057470A JPH0714550B2 (en) | 1985-03-20 | 1985-03-20 | Casting device for casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60057470A JPH0714550B2 (en) | 1985-03-20 | 1985-03-20 | Casting device for casting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61216848A true JPS61216848A (en) | 1986-09-26 |
| JPH0714550B2 JPH0714550B2 (en) | 1995-02-22 |
Family
ID=13056579
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60057470A Expired - Lifetime JPH0714550B2 (en) | 1985-03-20 | 1985-03-20 | Casting device for casting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0714550B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104084566A (en) * | 2014-07-25 | 2014-10-08 | 岑溪市东正动力科技开发有限公司 | Copper casting spraying device with pressure relief bypass pipe |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4855130A (en) * | 1971-11-05 | 1973-08-02 | ||
| JPS5527450A (en) * | 1978-08-15 | 1980-02-27 | Kubota Ltd | Casting mold heating method and heating device |
| JPS58187247A (en) * | 1982-04-28 | 1983-11-01 | Mitsubishi Heavy Ind Ltd | Continuous casting method of thin metallic plate |
-
1985
- 1985-03-20 JP JP60057470A patent/JPH0714550B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4855130A (en) * | 1971-11-05 | 1973-08-02 | ||
| JPS5527450A (en) * | 1978-08-15 | 1980-02-27 | Kubota Ltd | Casting mold heating method and heating device |
| JPS58187247A (en) * | 1982-04-28 | 1983-11-01 | Mitsubishi Heavy Ind Ltd | Continuous casting method of thin metallic plate |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104084566A (en) * | 2014-07-25 | 2014-10-08 | 岑溪市东正动力科技开发有限公司 | Copper casting spraying device with pressure relief bypass pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0714550B2 (en) | 1995-02-22 |
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