JPH07116815A - Die casting apparatus for casting non-blow hole product - Google Patents
Die casting apparatus for casting non-blow hole productInfo
- Publication number
- JPH07116815A JPH07116815A JP26763293A JP26763293A JPH07116815A JP H07116815 A JPH07116815 A JP H07116815A JP 26763293 A JP26763293 A JP 26763293A JP 26763293 A JP26763293 A JP 26763293A JP H07116815 A JPH07116815 A JP H07116815A
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- Prior art keywords
- molten metal
- mold
- cavities
- casting
- die
- Prior art date
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、油圧機器，自動車など
をはじめ、各種産業分野の部品製作に用いる無孔質ダイ
キャスト装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a non-porous die casting apparatus used for manufacturing parts in various industrial fields such as hydraulic equipment and automobiles.
【０００２】[0002]
【従来の技術】従来、ダイキャスト装置は、固定金型と
可動金型からなる精密な金型どうしを型締めすることに
よって金型キャビティを形成し、このキャビティ内に溶
湯を充填して凝固することで、高精度で鋳肌のすぐれた
鋳物を大量生産できる製造装置である。その製造プロセ
スは、基本的に次の４つからなっている。2. Description of the Related Art Conventionally, a die casting apparatus forms a die cavity by clamping a precision die made up of a fixed die and a movable die, and fills the cavity with a molten metal for solidification. As a result, it is a manufacturing device that can mass-produce castings with high precision and excellent casting surface. The manufacturing process basically consists of the following four.
【０００３】（１）固定金型と可動金型を型締めし、注
湯口から溶解した金属（以降、溶湯という）を注湯す
る。(1) A fixed mold and a movable mold are clamped, and molten metal (hereinafter referred to as molten metal) is poured from a pouring port.
【０００４】（２）スリーブ内でピストンを作動させる
ことにより、溶湯を押し込みキャビティ内に充填する。(2) The molten metal is pushed into the cavity by operating the piston in the sleeve.
【０００５】（３）溶湯を凝固させる。(3) Solidify the molten metal.
【０００６】（４）固定金型と可動金型を型開きし、可
動金型に付着した鋳物を取り出す。(4) The fixed mold and the movable mold are opened, and the casting adhered to the movable mold is taken out.
【０００７】これらのうち（２），（３）は、鋳物の品
質を決定づける最も重要なプロセスであるが、従来から
ピンホールや引け巣を生じるという問題があった。Among these, (2) and (3) are the most important processes for determining the quality of castings, but there has been a problem that pinholes and shrinkage cavities are conventionally generated.
【０００８】これに対して、金型減圧法，層流充填法，
局部加圧法などの新たな手法を導入することで、上記し
た製品に発生するピンホールや引け巣の低減に成果を上
げることができるようになってきている。例えば、金型
減圧法はキャビティ内を真空排気手段によって排気する
ことで湯回りをよくしてガスの巻き込みによるピンホー
ルや引け巣の防止を図り、層流充填法はピストンの作動
によって低速で溶湯の充填を行い、湯口形状を工夫する
ことで溶湯を層流状態としてガスの巻き込みによるピン
ホールや引け巣の防止を図り、局部加圧法はキャビティ
内において溶湯が最終的に凝固する部分に圧力を加える
ことで、ピンホールや引け巣の防止を図る。On the other hand, the mold depressurization method, the laminar flow filling method,
By introducing a new method such as the local pressure method, it has become possible to achieve results in reducing the pinholes and shrinkage cavities that occur in the above products. For example, in the mold depressurization method, the inside of the cavity is evacuated by vacuum evacuation means to improve the bathing area and prevent pinholes and shrinkage cavities due to gas entrainment. The molten metal is made into a laminar flow state by devising the shape of the gate to prevent pinholes and shrinkage cavities due to gas entrainment, and the local pressurization method applies pressure to the part where the melt finally solidifies in the cavity. By adding these, we will prevent pinholes and shrinkage cavities.
【０００９】[0009]
【発明が解決しようとする課題】しかしながら、上記し
た局部加圧法では、特別な手段を施さずに自然にランナ
部分の溶湯が凝固するのを待って加圧するので、その間
に製品の一部までも凝固してしまい、低減したとはいえ
ピンホールや引け巣が残る。また、溶湯の充填速度を、
層流充填法のように遅くすると金型キャビティ内におい
て湯回り不良によるピンホールや引け巣を起こしやすく
なり、これとは逆に速くすると溶湯が粉霧化しやすくな
り、表面が酸化されて熱処理をしても硬度は上がるが引
張り強さが上がらない。However, in the above-mentioned local pressurizing method, since the molten metal in the runner portion is naturally waited for to pressurize without applying any special means, even a part of the product is in the meantime. It solidifies and is reduced, but pinholes and shrinkage cavities remain. In addition, the filling speed of the molten metal,
If it is slow like the laminar flow filling method, pinholes and shrinkage cavities are likely to occur in the mold cavity due to defective molten metal rotation.On the contrary, if it is fast, the molten metal is likely to be atomized, and the surface is oxidized to heat treatment. Even though the hardness increases, the tensile strength does not increase.
【００１０】本発明は、上記の問題点を解決するために
創案されたものであり、ピンホールや引け巣を激減さ
せ、硬度，引張り強さが向上する鋳物製品を製造するこ
とができるダイキャスト装置を提供することを目的とす
る。The present invention was devised in order to solve the above-mentioned problems, and it is possible to produce a casting product which can drastically reduce pinholes and shrinkage cavities and improve hardness and tensile strength. The purpose is to provide a device.
【００１１】[0011]
【課題を解決するための手段】本発明は、固定金型と可
動金型とによって形成される金型と、金型内部を真空に
する手段と、この金型内部を加圧する手段とを備え、金
型内部に溶湯を充填させた後に、金型内加圧手段により
加圧しながら溶湯を凝固する無孔質ダイキャスト装置に
おいて、前記金型内部へ連接したランナで溶湯を冷却す
る手段を設けたことを特徴とする。The present invention comprises a mold formed by a fixed mold and a movable mold, means for evacuating the inside of the mold, and means for pressurizing the inside of this mold. In a non-porous die-casting device that solidifies the molten metal while pressurizing it by the in-mold pressurizing means after filling the molten metal inside the mold, means for cooling the molten metal with a runner connected to the inside of the mold is provided. It is characterized by that.
【００１２】[0012]
【作用】可動金型を移動−させ固定金型と型締めする。
次に注湯口から溶湯を注入し、ピストンを移動させて、
金型内部を真空排気しながら溶湯の注入を行う。そし
て、金型内部に充填された溶湯は上昇して強制冷却路に
入り、ここで冷却されて凝固して溶湯の出口を塞ぐ。さ
らに、ランナ部分を冷却して急速に溶湯を凝固させ、金
型内部を気密状態にする。この直後、金型内加圧手段に
より、金型内部に充填した溶湯に加圧する。溶湯が凝固
し鋳造が完了したら、可動金型を移動させて金型を開
き、可動金型から鋳物を取り出す。[Operation] The movable mold is moved and clamped with the fixed mold.
Next, inject the molten metal from the pouring port, move the piston,
Molten metal is injected while evacuating the inside of the mold. Then, the molten metal filled in the mold rises and enters the forced cooling path, where it is cooled and solidified to close the outlet of the molten metal. Further, the runner portion is cooled to rapidly solidify the molten metal so that the inside of the mold is hermetically sealed. Immediately after this, the in-mold pressurizing means pressurizes the molten metal filled in the mold. When the molten metal solidifies and the casting is completed, the movable mold is moved to open the mold, and the casting is taken out from the movable mold.
【００１３】[0013]
【実施例】図１は本発明の無孔質ダイキャスト装置の概
略構成、図２は図１のＩＩ矢視図、すなわち分割面の可
動金型側の概略構成を示す。図１，２において、１は固
定金型、１ａは固定金型のキャビティ、１ｂは固定金型
の母体、２は可動金型、２ａは可動金型のキャビティ、
２ｂは可動金型の母体、２ｃは可動金型の母体に設けら
れた挿通孔、２ｄは可動金型に設けられた挿通孔、３は
ランナ、４はスリーブ、４ａは注湯口、５はピストン、
６は強制冷却路、７は真空吸入路、８は強制冷却路６の
冷却水路、９は加圧装置、９ａはシリンダ、９ｂはピス
トン、９ｃはスクイズピン、１０はランナ３の冷却水
路、１０ａは冷却水の流入口、１０ｂは冷却水の流出
口、１１はダイベース、Ｐは固定金型と可動金型の分割
面である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a schematic structure of a non-porous die casting apparatus of the present invention, and FIG. 2 shows a schematic view taken along the arrow II of FIG. In FIGS. 1 and 2, 1 is a fixed mold, 1a is a fixed mold cavity, 1b is a fixed mold base, 2 is a movable mold, 2a is a movable mold cavity,
2b is a base of the movable mold, 2c is an insertion hole provided in the base of the movable mold, 2d is an insertion hole provided in the movable mold, 3 is a runner, 4 is a sleeve, 4a is a pouring port, 5 is a piston ,
6 is a forced cooling passage, 7 is a vacuum suction passage, 8 is a cooling water passage for the forced cooling passage 6, 9 is a pressurizing device, 9a is a cylinder, 9b is a piston, 9c is a squeeze pin, 10 is a cooling water passage for the runner 3, and 10a. Is a cooling water inflow port, 10b is a cooling water outflow port, 11 is a die base, and P is a split surface of a fixed mold and a movable mold.
【００１４】次に、本発明の無孔質ダイキャスト装置の
構成を図１および２を用いて説明する。金型は固定金型
１と可動金型２からなっており、製品となる鋳物に空間
を形成するための中子（図示省略）を両金型１，２の分
割面Ｐ間に入れてキャビティ１ａ，２ａを形成する。キ
ャビティ１ａ，２ａにはランナ３を経て、スリーブ４が
連接してあり、このスリーブ４に設けた注湯口４ａから
溶湯を充填することができるようになっている。また、
スリーブ４には進退可能なピストン５が嵌合してあり、
注湯口４ａから溶湯を注湯した後に、このピストン５を
作動させて溶湯をキャビティ１ａ，２ａ内へ押し込める
ようになっている。Next, the structure of the non-porous die casting apparatus of the present invention will be described with reference to FIGS. The mold is composed of a fixed mold 1 and a movable mold 2, and a core (not shown) for forming a space in a casting to be a product is put between split surfaces P of the molds 1 and 2 to form a cavity. 1a and 2a are formed. A sleeve 4 is connected to the cavities 1a and 2a via a runner 3, and a molten metal can be filled from a pouring port 4a provided in the sleeve 4. Also,
A piston 5 capable of advancing and retracting is fitted to the sleeve 4,
After pouring the molten metal from the pouring port 4a, the piston 5 is operated to push the molten metal into the cavities 1a and 2a.
【００１５】一方、両金型１，２の上部には、バルブ機
能を発揮する強制冷却路６が一体に構成されている。こ
の強制冷却路６については、キャビティ１ａ，２ａと真
空吸入路７との間に介在され、通常は通路を開通してお
き、溶湯がキャビティ１ａ，２ａを満たして上がってき
たら、溶湯を凝固させ通路を塞ぐことで溶湯が真空吸入
路７へ侵入するのを有効に防止できるものであり、可動
金型２の分割面Ｐに、図２に示すような迷路のような溝
で形成されており、近傍の冷却水路８に冷却水を流すこ
とにより、強制冷却路６内部の溶湯が冷却される。On the other hand, the forced cooling passages 6 exhibiting a valve function are integrally formed on the upper parts of the two dies 1 and 2. The forced cooling passage 6 is interposed between the cavities 1a and 2a and the vacuum suction passage 7, and the passage is normally opened. When the molten metal fills the cavities 1a and 2a and rises, the molten metal is solidified. It is possible to effectively prevent the molten metal from entering the vacuum suction passage 7 by closing the passage, and the split surface P of the movable mold 2 is formed with a groove like a maze as shown in FIG. The molten metal inside the forced cooling passage 6 is cooled by causing the cooling water to flow in the cooling water passage 8 in the vicinity.
【００１６】また、可動金型２側の母体２ｂにおいて、
可動金型２分割面Ｐの反対方向にキャビティ１ａ，２ａ
内部への加圧装置９を設ける。この加圧装置９は、図外
の圧液注入器からシリンダ９ａに圧液を注入すること
で、ピストン９ｂを介して母体２ｂおよび可動金型２の
挿通孔２ｃ，２ｄに嵌合されたスクイズピン９ｃに加圧
し、さらにこのスクイズピン９ｃがキャビティ１ａ，２
ａ内部に充填された溶湯を加圧する。Further, in the mother body 2b on the movable mold 2 side,
The cavities 1a and 2a are provided in the opposite direction of the movable die dividing surface P.
A pressurizing device 9 is provided inside. This pressurizing device 9 injects a pressure liquid into a cylinder 9a from a pressure liquid injecting device (not shown), so that a squeeze fit into the mother body 2b and the insertion holes 2c and 2d of the movable mold 2 through the piston 9b. Pressure is applied to the pin 9c, and the squeeze pin 9c causes the cavities 1a, 2
a The molten metal filled inside is pressurized.
【００１７】一方、前記キャビティ１ａ，２ａに連接さ
れたランナ３に近接して、溶湯の導入方向と直交して、
冷却水路１０が設けられる。この冷却水路１０に冷却水
を流すことにより、ランナ３内の溶湯を急速に凝固させ
て通路を塞ぎ、キャビティ１ａ，２ａ内部の気密性を得
ることができる。On the other hand, close to the runner 3 connected to the cavities 1a and 2a, orthogonal to the direction of introduction of the molten metal,
A cooling water channel 10 is provided. By flowing the cooling water into the cooling water passage 10, the molten metal in the runner 3 is rapidly solidified to close the passage, and the airtightness inside the cavities 1a and 2a can be obtained.
【００１８】次に、この実施例によるアルミニュウムダ
イキャストの製造プロセスを図１，図２を用いて説明す
る。まず、固定金型１との間に中子を介設した状態で、
ダイベース１１方向から可動金型２に負荷を加えて、型
締めする。次に注湯口４ａからアルミニュウム合金等の
溶湯を注入し、ピストン５を移動させて、注湯口を４ａ
塞いだ後に、真空吸入路７から図外の真空吸入器を用い
て、キャビティ１ａ，２ａ内部を排気しながら、ピスト
ン５を駆動して溶湯の注入を行う。これより、注入した
溶湯はランナ３を通過して、キャビティ１ａ，２ａ内部
へ注入される。このときのキャビティ１ａ，２ａへの注
入速度は、２〜１５ｍ／ｓの範囲とすることで、上記し
た充填速度が遅すぎる時に発生していた湯回り不良や、
速すぎる時に発生していた溶湯の粉霧化による酸化は起
こらないようになる。Next, the manufacturing process of the aluminum die cast according to this embodiment will be described with reference to FIGS. First, with the core interposed between the fixed mold 1 and
A load is applied to the movable mold 2 from the direction of the die base 11 to clamp the mold. Next, a molten metal such as an aluminum alloy is poured from the pouring port 4a, the piston 5 is moved, and the pouring port 4a is moved.
After closing, the piston 5 is driven to inject the molten metal from the vacuum suction passage 7 using a vacuum suction device (not shown) while exhausting the inside of the cavities 1a and 2a. As a result, the injected molten metal passes through the runner 3 and is injected into the cavities 1a and 2a. At this time, the injection speed into the cavities 1a and 2a is set to be in the range of 2 to 15 m / s, so that the above-described filling failure occurs when the filling speed is too slow,
Oxidation due to atomization of the molten metal that occurred when the speed was too fast will not occur.
【００１９】そして、ピストン５の動作終了時前には、
キャビティ１ａ，２ａ内部に充填された溶湯は、さらに
上昇して強制冷却路６に入り、ここで急速に冷却されて
ある程度進んだところで凝固して溶湯の流入を塞ぐ。こ
れとほぼ同時に、冷却水路水路１０の流入口１０ａから
冷却水を注入し、溶湯を急速に凝固してランナ３部分を
塞ぎ、キャビティ１ａ，２ａ内部からの圧力の漏れを防
ぎ、キャビティ１ａ，２ａ内部を気密状態にする。この
とき、ピストン５の加圧による溶湯の注入を中止する。
この直後に、加圧装置９のシリンダ９ａに圧液を注入し
て、ピストン９ｂをスクイズピン９ｃ方向へ移動させ、
このスクイズピン９ｃがキャビティ１ａ，２ａ内部に充
填した溶湯を加圧する。Before the end of the operation of the piston 5,
The molten metal filled in the cavities 1a and 2a further rises and enters the forced cooling path 6, where it is rapidly cooled and solidified at a certain point to block the inflow of the molten metal. Almost at the same time, cooling water is injected from the inlet 10a of the cooling water passage 10 to rapidly solidify the molten metal to close the runner 3 portion and prevent pressure leakage from the inside of the cavities 1a and 2a. Keep the inside airtight. At this time, the injection of the molten metal by pressurizing the piston 5 is stopped.
Immediately after this, a pressurized liquid is injected into the cylinder 9a of the pressurizing device 9 to move the piston 9b toward the squeeze pin 9c,
The squeeze pin 9c pressurizes the molten metal filled in the cavities 1a and 2a.
【００２０】やがて、溶湯が凝固し鋳造が完了したら、
可動金型２を移動させて型を開き、可動金型２から鋳物
を取り出す。このときには、強制冷却路６およびランナ
３部分で凝固した溶湯が、製品と固定されて凝固してい
るため、別途加工して所望する形状に製品を成形する。
さらに、溶湯の注入速度を上記した２〜１５ｍ／ｓの範
囲として溶湯の粉霧化による酸化を抑制しているため、
熱処理することにより、従来２２０ＭＰａであった製品
の引張り強さが、３２０ＭＰａと向上する。When the molten metal solidifies and the casting is completed,
The movable mold 2 is moved to open the mold, and the casting is taken out from the movable mold 2. At this time, since the molten metal solidified in the forced cooling passage 6 and the runner 3 is fixed to the product and solidified, it is separately processed to form the product into a desired shape.
Furthermore, since the molten metal injection speed is set within the above-mentioned range of 2 to 15 m / s to suppress the oxidation due to atomization of the molten metal,
The heat treatment improves the tensile strength of the product, which was 220 MPa in the past, to 320 MPa.
【００２１】なお、上記実施例では、ランナ３の近傍に
溶湯の導入方向と直交して冷却水路１０を備えたが、ラ
ンナ３の近傍に任意な曲線形状で冷却水路１０を設けて
もよい。In the above embodiment, the cooling water passage 10 is provided in the vicinity of the runner 3 at right angles to the direction of introduction of the molten metal, but the cooling water passage 10 may be provided in the vicinity of the runner 3 in an arbitrary curved shape.
【００２２】また、上記実施例では、冷却水路１０に冷
却媒体として水を注入したが、水よりも沸点の高いオイ
ルを使用しても、効果的にランナ部分３の溶湯を冷却す
ることができる。Further, in the above embodiment, water was injected into the cooling water passage 10 as a cooling medium, but even if oil having a boiling point higher than that of water is used, the molten metal in the runner portion 3 can be effectively cooled. .
【００２３】さらに、上記実施例では冷却水路１０をラ
ンナ３のキャビティ１ａ，２ａ直前に設けたが、キャビ
ティ１ａ，２ａから距離をおいて、冷却水路１０を設け
てもよい。Further, although the cooling water passage 10 is provided immediately before the cavities 1a and 2a of the runner 3 in the above embodiment, the cooling water passage 10 may be provided at a distance from the cavities 1a and 2a.
【００２４】[0024]
【発明の効果】本発明の装置は上記のように構成されて
いるため、キャビティ内の溶湯が凝固しはじめる前に加
圧することで、溶湯に対して均一な全体加圧をすること
ができ、ピンホールや引け巣が存在しない比重の均一な
製品、特にアルミダイキャストの場合、比重約２．７５
ｇ／ｃｍ3 の製品が得られる。したがって、従来ダイキ
ャスト装置では不可能であったギヤポンプまたはモータ
のカバーの製造が可能となる。Since the apparatus of the present invention is configured as described above, by pressurizing before the molten metal in the cavity begins to solidify, it is possible to uniformly pressurize the molten metal. Products with uniform specific gravity without pinholes or shrinkage cavities, especially in the case of aluminum die casting, the specific gravity is about 2.75.
A product of g / cm3 is obtained. Therefore, it is possible to manufacture a cover for a gear pump or a motor, which has been impossible with a conventional die-casting apparatus.
【００２５】また、従来局部加圧法では約４００ＭＰａ
で溶湯を加圧するが、本発明では上記したように溶湯の
凝固が全く始まっておらず、局部加圧法より低い２００
〜３００ＭＰａの圧力でも溶湯全体に均一な加圧ができ
る。したがって、加圧装置をコンパクトすることがで
き、装置全体の小型化をも図ることができる。In the conventional local pressure method, about 400 MPa
The molten metal is pressurized with, but in the present invention, as described above, the solidification of the molten metal has not started at all, which is lower than the local pressure method.
Even at a pressure of up to 300 MPa, uniform pressure can be applied to the entire melt. Therefore, the pressurizing device can be made compact, and the entire device can be made compact.
【図１】本発明の無孔質ダイキャスト装置の概略構成を
示す図である。FIG. 1 is a diagram showing a schematic configuration of a non-porous die casting apparatus of the present invention.
【図２】図１のＩＩ矢視図である。FIG. 2 is a view on arrow II of FIG.
Claims (1)
る金型と、金型内部を真空にする手段と、この金型内部
を加圧する手段とを備え、金型内部に溶湯を充填させた
後に、金型内加圧手段により加圧しながら溶湯を凝固す
る無孔質ダイキャスト装置において、前記金型内部へ連
接したランナ部に溶湯を冷却する手段を設けたことを特
徴とする無孔質ダイキャスト装置。1. A mold comprising a fixed mold and a movable mold, means for evacuating the inside of the mold, and means for pressurizing the inside of the mold, and filling the mold with molten metal. In the non-porous die-casting apparatus that solidifies the molten metal while applying pressure by the in-mold pressurizing means after that, means for cooling the molten metal is provided in the runner portion connected to the inside of the mold. Porous die casting equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5267632A JP2743789B2 (en) | 1993-10-26 | 1993-10-26 | Non-porous die casting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5267632A JP2743789B2 (en) | 1993-10-26 | 1993-10-26 | Non-porous die casting equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07116815A true JPH07116815A (en) | 1995-05-09 |
| JP2743789B2 JP2743789B2 (en) | 1998-04-22 |
Family
ID=17447383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5267632A Expired - Fee Related JP2743789B2 (en) | 1993-10-26 | 1993-10-26 | Non-porous die casting equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2743789B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0878255A2 (en) * | 1997-03-12 | 1998-11-18 | Ngk Insulators, Ltd. | Chill vent |
| KR100676382B1 (en) * | 2006-04-10 | 2007-02-01 | 주식회사 트라움유시케이 | Die casting method using vacuum and partial squeeze |
| US7773338B2 (en) | 2006-06-16 | 2010-08-10 | Hitachi Global Storage Technologies Netherland B.V. | Magnetic disk drive |
| CN105414514A (en) * | 2015-11-02 | 2016-03-23 | 富乐压铸(太仓)有限公司 | Pressure casting production process |
| CN114918401A (en) * | 2022-05-24 | 2022-08-19 | 浙江钟铮锁业有限公司 | Integrated into one piece's rack lock mould |
| CN118527628A (en) * | 2024-07-26 | 2024-08-23 | 福建省鼎智新材料科技有限公司 | Quick die casting equipment of aluminum alloy die casting |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6427761A (en) * | 1987-07-22 | 1989-01-30 | Honda Motor Co Ltd | Method and device for die casting |
| JPH0259160A (en) * | 1988-08-24 | 1990-02-28 | Kobe Steel Ltd | Apparatus for manufacturing casting having thick parts at both ends |
-
1993
- 1993-10-26 JP JP5267632A patent/JP2743789B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6427761A (en) * | 1987-07-22 | 1989-01-30 | Honda Motor Co Ltd | Method and device for die casting |
| JPH0259160A (en) * | 1988-08-24 | 1990-02-28 | Kobe Steel Ltd | Apparatus for manufacturing casting having thick parts at both ends |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0878255A2 (en) * | 1997-03-12 | 1998-11-18 | Ngk Insulators, Ltd. | Chill vent |
| EP0878255A3 (en) * | 1997-03-12 | 1999-01-27 | Ngk Insulators, Ltd. | Chill vent |
| KR100271899B1 (en) * | 1997-03-12 | 2000-12-01 | 시바타 마사하루 | Chill vent |
| KR100676382B1 (en) * | 2006-04-10 | 2007-02-01 | 주식회사 트라움유시케이 | Die casting method using vacuum and partial squeeze |
| US7773338B2 (en) | 2006-06-16 | 2010-08-10 | Hitachi Global Storage Technologies Netherland B.V. | Magnetic disk drive |
| CN105414514A (en) * | 2015-11-02 | 2016-03-23 | 富乐压铸(太仓)有限公司 | Pressure casting production process |
| CN114918401A (en) * | 2022-05-24 | 2022-08-19 | 浙江钟铮锁业有限公司 | Integrated into one piece's rack lock mould |
| CN118527628A (en) * | 2024-07-26 | 2024-08-23 | 福建省鼎智新材料科技有限公司 | Quick die casting equipment of aluminum alloy die casting |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2743789B2 (en) | 1998-04-22 |
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