JP2004268141A - Injection tube with vitreous coating - Google Patents
Injection tube with vitreous coating Download PDFInfo
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- JP2004268141A JP2004268141A JP2004039382A JP2004039382A JP2004268141A JP 2004268141 A JP2004268141 A JP 2004268141A JP 2004039382 A JP2004039382 A JP 2004039382A JP 2004039382 A JP2004039382 A JP 2004039382A JP 2004268141 A JP2004268141 A JP 2004268141A
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- 238000002347 injection Methods 0.000 title claims abstract description 78
- 239000007924 injection Substances 0.000 title claims abstract description 78
- 239000011248 coating agent Substances 0.000 title claims abstract description 47
- 238000000576 coating method Methods 0.000 title claims abstract description 47
- 229910052751 metal Inorganic materials 0.000 claims abstract description 41
- 239000002184 metal Substances 0.000 claims abstract description 41
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 37
- 239000000956 alloy Substances 0.000 claims abstract description 37
- 238000004512 die casting Methods 0.000 claims abstract description 22
- 239000000919 ceramic Substances 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 12
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 12
- 238000007496 glass forming Methods 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims 2
- 239000000155 melt Substances 0.000 claims 2
- 239000000203 mixture Substances 0.000 abstract description 17
- 239000011521 glass Substances 0.000 abstract description 11
- 239000008367 deionised water Substances 0.000 abstract description 6
- 229910021641 deionized water Inorganic materials 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 239000000243 solution Substances 0.000 abstract 1
- 229910010293 ceramic material Inorganic materials 0.000 description 3
- 238000010304 firing Methods 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D35/00—Equipment for conveying molten metal into beds or moulds
- B22D35/04—Equipment for conveying molten metal into beds or moulds into moulds, e.g. base plates, runners
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/50—Pouring-nozzles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
Description
本発明はダイカストマシンの注入管(fill tube)に関する。 The present invention relates to a fill tube of a die casting machine.
ダイカストマシンでは、容器の中に、鋳造される溶融金属又は合金が収容される。注入管は、溶融した金属又は合金の表面の下からダイキャビティまで延びている。容器内の溶融金属又は合金に対して、ガス(例えば空気)の圧力が作用すると、溶融金属又は合金は、注入管の中を通って、ダイキャビティの中へ送られ、ダイキャビティは溶融金属又は合金で充満する。自動ダイカストマシンでは、容器内の溶融金属又は合金に対するガス圧力は、溶融金属又は合金が容器からダイキャビティの中へ周期的に送られるように制御される。 In a die casting machine, a molten metal or alloy to be cast is accommodated in a container. The injection tube extends from below the surface of the molten metal or alloy to the die cavity. When gas (e.g., air) pressure is applied to the molten metal or alloy in the vessel, the molten metal or alloy is routed through the injection tube into the die cavity, where the die cavity Fill with alloy. In an automatic die casting machine, the gas pressure on the molten metal or alloy in the vessel is controlled such that the molten metal or alloy is periodically sent from the vessel into the die cavity.
この自動ダイカストマシンでは、ガス透過性セラミックから形成された注入管を用いており、溶融金属又は合金は、該注入管を通って、容器からダイのダイキャビティへ送られる。ガス透過性セラミック製注入管を用いると、加圧された雰囲気空気(又はその他のガス)は、注入管のガス透過性壁の中を通過するので、溶融金属又は合金を注入管の中を送給するのに必要な圧力差をある程度しか得ることができないという不都合がある。さらにまた、注入管の壁の中を通る圧力ガスはダイキャビティの中へ進入するため、溶融金属又は合金の中に空気が含まれ、ダイキャビティの中で凝固する鋳造製品に欠陥が生ずる。 This automatic die casting machine uses an injection tube formed from a gas permeable ceramic through which molten metal or alloy is fed from the container to the die cavity of the die. With a gas permeable ceramic injection tube, pressurized atmospheric air (or other gas) passes through the gas permeable wall of the injection tube, so that molten metal or alloy is fed through the injection tube. There is an inconvenience that a pressure difference necessary for supplying can be obtained only to some extent. Furthermore, since the pressurized gas that passes through the wall of the injection tube enters the die cavity, air is contained in the molten metal or alloy, causing defects in the cast product that solidifies in the die cavity.
本発明は、上記不都合を解消するために、セラミック製注入管に、ガラス質(vitreous)コーティングを設けたものであり、該コーティングにより、ダイキャスティング中、容器内の溶融金属又は合金に空気圧が作用したとき、ガス透過性壁を通る空気の流れを効果的に減少又はなくすことができる。 In order to eliminate the above disadvantages, the present invention is a ceramic injection tube provided with a vitreous coating, and this coating causes air pressure to act on the molten metal or alloy in the container during die casting. When this is done, the flow of air through the gas permeable wall can be effectively reduced or eliminated.
本発明のガラス質コーティングの形成は、例えば、ガラスフリットと脱イオン水を適当な割合で混合し、得られた混合物をセラミッ製注入管の表面にコートすることによって行なうことができる。次に、注入管のコーティングを加熱することにより、ガラス質のコーティングが作られる。このコーティングにより、ダイキャスティング中、空気圧が容器内の溶融金属又は合金に作用したとき、注入管のガス透過性壁を通して空気の流れを減少又はなくすことができる。 The glassy coating of the present invention can be formed, for example, by mixing glass frit and deionized water in an appropriate ratio and coating the resulting mixture on the surface of a ceramic injection tube. Next, a glassy coating is made by heating the coating of the injection tube. This coating can reduce or eliminate air flow through the gas permeable wall of the inlet tube when air pressure acts on the molten metal or alloy in the vessel during die casting.
本発明の利点は、図面に基づく以下の詳細な説明により、明らかになるであろう。
図１は、ダイカストマシンに用いられる本発明の注入管(10)を示している。注入管(10)の一方の端部(10a)は、溶湯収容容器(20)の中の溶融金属又は合金Ｍの中に浸漬される。また、他方の端部(10b)は、金型(32)の通路(36)を通って、金型(32)(34)によって形成されたダイキャビティ(30)に連通している。注入管(10)は長さ方向に延びる内部通路(10c)を含んでおり、溶湯金属又は合金は該内部通路を通って、溶湯収容容器(20)(例えば、坩堝)からダイキャビティへ運ばれる。ガスによる加圧可能なチャンバーＣは、容器(20)の中の溶融金属又は合金より上の部分であり、ガス加圧によって容器(20)内の溶融金属又は合金Ｍにある程度のガス圧が作用すると、溶融金属又は合金は、注入管(10)の中を通って上向きに進み、ダイキャビティ(30)の中へ送給される。例えば、ガス加圧手段として、エアコンプレッサー又はポンプ(40)を配備し、加圧空気を、管路(42)を経てチャンバーＣに送り込むことができるが、これに限定されるものではない。ダイカストマシンの作動時、容器(20)のガス加圧のタイミングは、容器内の溶融金属又は合金を間欠的に加圧して、溶湯金属又は合金が容器からダイキャビティ(30)の中へ逐次的に導入されるように制御される。
The advantages of the present invention will become apparent from the following detailed description based on the drawings.
FIG. 1 shows an injection tube (10) of the present invention used in a die casting machine. One end (10a) of the injection tube (10) is immersed in the molten metal or alloy M in the molten metal container (20). The other end (10b) communicates with the die cavity (30) formed by the dies (32) and (34) through the passage (36) of the dies (32). The injection pipe (10) includes an internal passage (10c) extending in the lengthwise direction, and the molten metal or alloy is conveyed from the molten metal container (20) (for example, crucible) to the die cavity through the internal passage. . The chamber C capable of being pressurized by gas is a portion above the molten metal or alloy in the container (20), and a certain amount of gas pressure acts on the molten metal or alloy M in the container (20) by gas pressurization. The molten metal or alloy then travels upward through the injection tube (10) and is fed into the die cavity (30). For example, an air compressor or pump (40) may be provided as the gas pressurizing means, and the pressurized air can be sent into the chamber C via the pipe line (42), but is not limited thereto. During the operation of the die casting machine, the gas pressurization timing of the container (20) is such that the molten metal or alloy in the container is intermittently pressurized so that the molten metal or alloy is sequentially transferred from the container into the die cavity (30). Controlled to be introduced.
アルミニウム及びその合金のような低圧ダイキャスティングでは、セラミック製注入管(10)は、溶融アルミニウム及びその合金に耐性を有するジルコニアその他適当なセラミック材料から構成することができる。注入管(10)に用いられるその他セラミック材料は、鋳造される溶融金属又は合金に応じて選択することができる。代表的な注入管(10)は、行われるダイキャスティングに適した形状及び寸法を有する予備成形されたモノリシック管である。 For low pressure die casting, such as aluminum and its alloys, the ceramic injection tube (10) can be composed of zirconia or other suitable ceramic material that is resistant to molten aluminum and its alloys. Other ceramic materials used for the injection tube (10) can be selected according to the molten metal or alloy to be cast. A typical injection tube (10) is a preformed monolithic tube having a shape and dimensions suitable for die casting to be performed.
例示した本発明の実施例によれば、図１及び図２に示されるように、セラミック製注入管(10)には、ガラス質コーティング(11)がその場所にて(in-situ)コートされる。ガラス質コーティング(11)は、注入管(10)よりもガス透過性を少なくするために設けられる。この結果、容器(20)の中の溶融金属又は合金にガス圧が作用したとき、ガラス質コーティング(11)によって、ガス透過性壁(10w)へのガスの進入が妨げられ、注入管(10)の通路(10c)への進入は少なくなるか又は遮断される。この目的を達成するために、ガラス質コーティング(11)は、チャンバー(35)の中の加圧用ガスに対して実質的にガス不透過性であることが好ましい。 According to the illustrated embodiment of the invention, as shown in FIGS. 1 and 2, the ceramic injection tube (10) is coated in-situ with a glassy coating (11). The The glassy coating (11) is provided to make the gas permeability less than that of the injection tube (10). As a result, when gas pressure acts on the molten metal or alloy in the container (20), the glassy coating (11) prevents gas from entering the gas permeable wall (10w), and the injection pipe (10 ) Is less or blocked from entering the passage (10c). To achieve this goal, the glassy coating (11) is preferably substantially gas impermeable to the pressurizing gas in the chamber (35).
例示した本発明の実施例において、注入管へのガラス質コーティングの形成は、適当量のガラスフリットと担体物質(carrier agent)(脱イオン水を含むものが好ましい)を混合して、ガラス形成用混合物を生成し、注入管(10)の外表面に混合物をコートすることにより行われる。なお、注入管(10)の材料として選択されるセラミックに応じて、他の担体物質として、例えば、コロイダルシリカを用いることもできる。注入管(10)の外表面のコーティングの形成は、注入管(10)(開口端部を施栓して閉じる)をガラス形成用混合物の中に浸漬することにより、或いはガラス形成用混合物を注入管(10)の外表面に、はけで塗ったり、スプレーしたり、その他の方法で施すことよって行なうことができる。一般的に、注入管(10)の外表面及び／又は内表面は、同種又は異種のコーティングでコートすることができる。ガラス質コーティングは、鋳造される溶融金属又は合金による悪影響を受けないように、鋳造される溶融金属又は合金と適合性(compatible)を有するものが用いられる。注入管に施されたガラス形成用混合物のコーティングは、適当な温度で焼成され(fired)、ガラス質コーティングが形成される。この結果、溶湯収容容器(20)の中の溶融金属又は合金にガス圧が作用したとき、ガス透過性壁(10b)を通過した加圧用ガスは、ガラス質コーティング(11)によって通過が妨げられ、注入管(10a)への進入は少なくなるか又は遮断される。 In the illustrated embodiment of the invention, the glassy coating is formed on the injection tube by mixing an appropriate amount of glass frit with a carrier agent (preferably containing deionized water) to form the glass. This is done by forming the mixture and coating the mixture on the outer surface of the injection tube (10). Depending on the ceramic selected as the material for the injection tube (10), for example, colloidal silica can be used as another carrier substance. The formation of the coating on the outer surface of the injection tube (10) can be accomplished by immersing the injection tube (10) (with the open end closed and closed) in the glass forming mixture, or by introducing the glass forming mixture into the injection tube. The outer surface of (10) can be applied by brushing, spraying, or other methods. In general, the outer and / or inner surface of the injection tube (10) can be coated with the same or different coating. A glassy coating is used that is compatible with the cast molten metal or alloy so that it is not adversely affected by the cast molten metal or alloy. The glass-forming mixture coating applied to the injection tube is fired at a suitable temperature to form a glassy coating. As a result, when gas pressure acts on the molten metal or alloy in the molten metal container (20), the gas for pressurization that has passed through the gas permeable wall (10b) is blocked from passing by the glassy coating (11). , Entry into the injection tube (10a) is reduced or blocked.
低圧アルミニウムのダイカストマシンに用いられるジルコニア製注入管に好適なガラス形成用コーティングは、市販のガラスフリット４重量部と、脱イオン水６重量部を混合することによって作ることができる。適当なガラスフリットは、Ferro Corporation製のFerro3225とFerro3226を等量混合することによって得ることができる。得られた混合物のおよその成分は、重量％にて、ＳｉＯ2：５８.７５％、Ｂ2Ｏ3：２９.１０％、Ａｌ2Ｏ3：４.６０％、ＭｇＯ：３.７５％、Ｎａ2Ｏ：２.２０％、ＣａＯ：１.６０％である。
ガラスフリットと脱イオン水は、まず最初に各構成成分の適当量を計量し、構成成分を容器に中に入れ、容器を振り混ぜることによって混合し、脱イオン水の中でガラスフリットを分散させ、ガラス形成用混合物を作る。次に、注入管(10)をガラス形成用混合物の中に浸漬して、注入管(10)にガラス形成用混合物を施す。この際、注入管(10)の内表面が混合物でコートされないように、注入管(10)の開口端部には栓を施して閉じている。
注入管は、ガラス形成用混合物の中に所定時間(例えば１秒)浸漬した後、取り出し、次の取扱いの前に、空気乾燥する。乾燥後、コートされた注入管(10)をキルンに移動させ、大気雰囲気の８５０℃〜１０００℃の温度で焼成する。この結果、ガラスフリットは固まって、実質的にガス不透過性のガラス質コーティング(11)が、その場所で、注入管(10)の外表面に形成される。焼成条件の一例として、乾燥してガラスコートされたジルコニア製注入管を１℃／ｈの割合で昇温し、９８０℃で１時間保持し、１℃／ｈの割合で降温する例を挙げることができるが、これに限定されるものではない。焼成後のガラス質コーティング(11)の代表的な厚さは、０.０２５４〜０１０１６ｍｍ(０.００１〜０.００４インチ)であるが、発明を実施する上で、他の厚さであっても構わない。
A glass forming coating suitable for a zirconia injection tube used in a low pressure aluminum die casting machine can be made by mixing 4 parts by weight of a commercially available glass frit and 6 parts by weight of deionized water. A suitable glass frit can be obtained by mixing equal amounts of Ferro3225 and Ferro3226 from Ferro Corporation. Approximate components of the resulting mixture are, by weight percent, SiO 2 : 58.75%, B 2 O 3 : 29.10%, Al 2 O 3 : 4.60%, MgO: 3.75%, Na 2 O: 2.20%, CaO: 1.60%.
For glass frit and deionized water, first weigh the appropriate amount of each component, put the components in the container, mix by shaking the container, and disperse the glass frit in deionized water. Make a glass forming mixture. Next, the injection tube (10) is immersed in the glass forming mixture, and the glass forming mixture is applied to the injection tube (10). At this time, the opening end of the injection tube (10) is closed with a stopper so that the inner surface of the injection tube (10) is not coated with the mixture.
The injection tube is immersed in the glass forming mixture for a predetermined time (for example, 1 second), then taken out and air-dried before the next handling. After drying, the coated injection tube (10) is moved to a kiln and baked at a temperature of 850 ° C. to 1000 ° C. in an air atmosphere. As a result, the glass frit sets and a substantially gas impermeable glassy coating (11) is formed at the outer surface of the injection tube (10) at that location. As an example of firing conditions, mention is made of an example in which a dried and glass-coated zirconia injection tube is heated at a rate of 1 ° C./h, held at 980 ° C. for 1 hour, and cooled at a rate of 1 ° C./h. However, it is not limited to this. A typical thickness of the fired glassy coating (11) is 0.0254 to 10116 mm (0.001 to 0.004 inches), but other thicknesses may be used to practice the invention. It doesn't matter.
また、発明を実施する上で、注入管(10)を形成する具体的なセラミック材料と適合性を有する他のガラスフリットを用いることもできる。ガラス質コーティングと注入管は、両者の熱的挙動(例えば、熱膨張係数)によって、ダイキャスティング中、クラッキング、フレーキング(flaking)等によってコーティングが損傷を受けないように、適合性を有するものであらねばならない。さらにまた、使用するガラス形成用混合物の種類に応じて、該混合物を注入管に施すのに他のコーティング技術を用いたり、異なる焼成温度や焼成時間を用いることができる。 Other glass frits compatible with the specific ceramic material forming the injection tube (10) can also be used in the practice of the invention. The glassy coating and injection tube are compatible so that the coating is not damaged by cracking, flaking, etc. during die casting due to the thermal behavior of both (e.g., thermal expansion coefficient). I have to. Furthermore, depending on the type of glass forming mixture used, other coating techniques can be used to apply the mixture to the injection tube, or different firing temperatures and firing times can be used.
図１を参照すると、外表面にガラス質コーティング(11)が形成された注入管(10)は、溶湯収容容器(20)及び金型(32)(34)との間に配備されており、チャンバーＣがガス加圧されたとき、容器(20)内の溶融金属又は合金がダイキャビティ(30)に送り込まれる。例えば、アルミニウム及びその合金のような低圧ダイキャスティングでは、チャンバーＣを、間欠的に、空気(例えば、１１psi又はその他の超大気圧)で所定時間加圧することにより、所定量の溶融金属又は合金は、注入管からダイキャビティへ送り込まれる。
注入管(10)の外表面及び／又は内表面のガラス質コーティング(11)によって、壁(10w)への進入が妨げられ、注入管(10)の通路(10c)への進入は少なくなるか又は遮断される。これにより、溶融金属又は合金をダイキャビティ(30)へ強制送給するのに必要な圧力差がもたらされる。ガラス質コーティング(11)はまた、加圧用ガスの通路(10c)への進入を可及的に防止し、加圧用ガスがキャビティへ入らないようにする役割を有しており、ダイキャビティ(30)の中の空気に起因する鋳造欠陥を少なくするか又は無くし、及び／又はキャビティ(30)内で鋳造し凝固させることができる。
Referring to FIG. 1, an injection tube (10) having a glassy coating (11) formed on the outer surface is disposed between a molten metal container (20) and molds (32) and (34). When the chamber C is pressurized, molten metal or alloy in the container (20) is fed into the die cavity (30). For example, in low pressure die castings such as aluminum and its alloys, chamber C is intermittently pressurized with air (e.g., 11 psi or other superatmospheric pressure) for a predetermined time so that a predetermined amount of molten metal or alloy is It is fed into the die cavity from the injection tube.
Does the vitreous coating (11) on the outer and / or inner surface of the injection tube (10) prevent entry into the wall (10w) and reduce entry into the passage (10c) of the injection tube (10)? Or blocked. This provides the pressure differential necessary to force the molten metal or alloy into the die cavity (30). The glassy coating (11) also serves to prevent the pressurization gas from entering the passage (10c) as much as possible and prevent the pressurization gas from entering the cavity. ) Can be reduced or eliminated and / or cast and solidified in the cavity (30).
本発明について、幾つかの実施例を挙げて説明したが、当該分野の専門家であれば、本発明はそれら実施例に限定されるものではなく、特許請求の範囲に記載された発明の精神及び範囲から逸脱することなく、変形をなし得ることは理解し得るであろう。 Although the present invention has been described with reference to several embodiments, the present invention is not limited to these embodiments as long as it is an expert in the field, and the spirit of the invention described in the scope of claims. It will be understood that variations may be made without departing from the scope and scope.
Claims (18)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/369,144 US20040159418A1 (en) | 2003-02-18 | 2003-02-18 | Fill tube with vitreous coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2004268141A true JP2004268141A (en) | 2004-09-30 |
Family
ID=32771412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2004039382A Withdrawn JP2004268141A (en) | 2003-02-18 | 2004-02-17 | Injection tube with vitreous coating |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20040159418A1 (en) |
| JP (1) | JP2004268141A (en) |
| DE (1) | DE102004007803A1 (en) |
| FR (1) | FR2851184A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011016166A (en) * | 2009-07-10 | 2011-01-27 | Sukegawa Electric Co Ltd | Casting apparatus |
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|---|---|---|---|---|
| GB908173A (en) * | 1959-01-13 | 1962-10-17 | Griffin Wheel Co | Treatment of ceramic pouring tubes |
| BE705456A (en) * | 1967-10-20 | 1968-03-01 | ||
| US3508615A (en) * | 1967-11-09 | 1970-04-28 | Amsted Ind Inc | Composite pouring tube |
| JPS583992B2 (en) * | 1974-11-30 | 1983-01-24 | ニホンルツボ カブシキガイシヤ | Lenzokuchiyuzoyoushinseki nozzle |
| JPS52140420A (en) * | 1976-05-20 | 1977-11-24 | Toshiba Machine Co Ltd | Injection pump device for molten metal |
| US4458741A (en) * | 1978-02-03 | 1984-07-10 | Cabot Corporation | Method of aspiration casting |
| US4417617A (en) * | 1978-02-03 | 1983-11-29 | Cabot Corporation | Apparatus for vacuum casting of rods |
| EP0041524A1 (en) * | 1979-12-15 | 1981-12-16 | Steetley Refractories Limited | Tubular assembly for bottom casting |
| GB8604386D0 (en) * | 1986-02-21 | 1986-03-26 | Cosworth Res & Dev Ltd | Casting |
| US4725962A (en) * | 1986-04-17 | 1988-02-16 | Gte Laboratories Incorporated | Melt ejection pressure control system for the melt spinning process |
| FR2647105B1 (en) * | 1989-05-22 | 1991-07-12 | Vesuvius France Sa | WATERPROOF COATING FOR REFRACTORY MATERIAL, COATED PART THEREOF, AND COATING METHOD |
| US5069271A (en) * | 1990-09-06 | 1991-12-03 | Hitchiner Corporation | Countergravity casting using particulate supported thin walled investment shell mold |
| US5178203A (en) * | 1992-06-11 | 1993-01-12 | Cmi International, Inc. | Apparatus for the countergravity casting of metals |
| US5303762A (en) * | 1992-07-17 | 1994-04-19 | Hitchiner Manufacturing Co., Inc. | Countergravity casting apparatus and method |
| US5370370A (en) * | 1993-02-19 | 1994-12-06 | Vesuvius Crucible Company | Liner for submerged entry nozzle |
| US5322109A (en) * | 1993-05-10 | 1994-06-21 | Massachusetts Institute Of Technology, A Massachusetts Corp. | Method for pressure infiltration casting using a vent tube |
| US5479690A (en) * | 1993-12-01 | 1996-01-02 | Hoskins Manufacturing Company | Tube making mechanism having a fill tube for depositing a ceramic powder into the tube as it is being made |
| US5681499A (en) * | 1994-06-15 | 1997-10-28 | Vesuvius Crucible Company | Method and compositions for making refractory shapes having dense, carbon free surfaces and shapes made therefrom |
| US5620043A (en) * | 1995-06-09 | 1997-04-15 | Ford Motor Company | Transferring molten metal for low pressure casting |
| DE19639358A1 (en) * | 1996-09-25 | 1998-03-26 | Bayer Ag | Riser pipe made of sintered ceramic material for use in light metal melts |
| US6148899A (en) * | 1998-01-29 | 2000-11-21 | Metal Matrix Cast Composites, Inc. | Methods of high throughput pressure infiltration casting |
| US6716275B1 (en) * | 2001-12-11 | 2004-04-06 | Sandia Corporation | Gas impermeable glaze for sealing a porous ceramic surface |
-
2003
- 2003-02-18 US US10/369,144 patent/US20040159418A1/en not_active Abandoned
-
2004
- 2004-02-17 JP JP2004039382A patent/JP2004268141A/en not_active Withdrawn
- 2004-02-18 FR FR0401628A patent/FR2851184A1/en active Pending
- 2004-02-18 DE DE102004007803A patent/DE102004007803A1/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011016166A (en) * | 2009-07-10 | 2011-01-27 | Sukegawa Electric Co Ltd | Casting apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2851184A1 (en) | 2004-08-20 |
| US20040159418A1 (en) | 2004-08-19 |
| DE102004007803A1 (en) | 2004-10-14 |
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