JP2008213029A - Mold removal method in lost foam casting method - Google Patents

Mold removal method in lost foam casting method Download PDF

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JP2008213029A
JP2008213029A JP2007089370A JP2007089370A JP2008213029A JP 2008213029 A JP2008213029 A JP 2008213029A JP 2007089370 A JP2007089370 A JP 2007089370A JP 2007089370 A JP2007089370 A JP 2007089370A JP 2008213029 A JP2008213029 A JP 2008213029A
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casting
sand
frame
air
flask
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Akira Ikenaga
明 池永
Shinji Kinugawa
眞司 衣川
Yoichi Yonekita
洋一 米北
Hiroshi Takamichi
博 高道
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Taiyo Machinery Co Ltd
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Taiyo Machinery Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a lost foam casting method, wherein for a mold removal work in lost foam casting, a casting product can be easily taken out without arranging a large-scale dust collector and also without inverting a flask, and simultaneously, the whole of casting sand can be swiftly cooled. <P>SOLUTION: In the lost foam casting method where a lost foam is installed in a flask, and the pressure in the flask is reduced upon pouring, so as to attain the suction of generated gas and the strengthening in the consolidation of casting sand in the flask, prior to a mold removal operation, compressed air is injected into the flask, and, while fluidizing the casting sand at the inside and releasing the consolidated state, a casting product is taken out from the flask, and simultaneously, the casting sand is cooled while being stirred and mixed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、消失模型鋳造法における解枠方法に関する。  The present invention relates to a method for unraveling a vanishing model casting method.

消失模型を使用する消失模型鋳造法においては、一般に次のような工程で作業が行われる。
鋳物製品に対応する消失模型は発泡スチロールで成型されるが、これは、予備発泡機を用いて原料ビーズを発泡させ、成型機を用いて成型し、その後に塗布がなされ、乾燥されることで完成される。
この消失模型を、鋳枠に床砂を入れた状態で設置し、鋳砂を投入して振動テーブルで鋳砂を固めて行く。この振動テーブルとしては、種々の形態の装置が汎用されている。In the disappearance model casting method using the disappearance model, the operation is generally performed in the following steps.
Disappearance models corresponding to casting products are molded with expanded polystyrene, but this is completed by foaming the raw material beads using a pre-foaming machine, molding with a molding machine, and then applying and drying. Is done.
This vanishing model is installed in a state where floor sand is put in a casting frame, and the casting sand is thrown in and the casting sand is hardened by a vibration table. Various types of apparatuses are widely used as the vibration table.

図５は、完成された状態の鋳枠の縦断側面図である。
１は、鋳枠（フラスコ）であり、２はノーバインダーの鋳砂、３は、消失模型であり、４は、セキ鉢を示す。また、５は、鋳砂２の上に被せられたビニールシートであり、減圧効果を発揮させるためのものである。６は、減圧を行うために鋳枠１の底部に設けられたパイプ状のフィルターであり、７は、このフィルター６を保護するエキスバンドである。前記フィルター６は、エア流路１３を形成しており、これがガキュームホース８を介して鋳枠１の外部の減圧手段９、即ち、例えば、真空ポンプに接続される。FIG. 5 is a longitudinal side view of the finished casting frame.
1 is a casting frame (flask), 2 is a casting sand with no binder, 3 is a vanishing model, and 4 is a mortar. Reference numeral 5 denotes a vinyl sheet placed on the casting sand 2 for exhibiting a decompression effect. Reference numeral 6 denotes a pipe-like filter provided at the bottom of the casting frame 1 for decompression, and reference numeral 7 denotes an expander for protecting the filter 6. The filter 6 forms an air flow path 13, which is connected to a decompression means 9 outside the casting frame 1, that is, a vacuum pump, for example, via a vacuum hose 8.

このように、消失模型鋳造法においては、注湯時に減圧手段９を用いて鋳枠１を減圧するが、その理由は、注湯に伴って発泡模型が燃えることで大量のガスを発生するので、これを排気させること、また、注湯に際して、ノーバインダーの鋳砂２が振動テーブルで圧密充填した状態を維持させ、型崩れしないようにするためである。  Thus, in the disappearance model casting method, the casting frame 1 is decompressed using the decompression means 9 at the time of pouring, because the foamed model burns with the pouring and generates a large amount of gas. This is because the state is exhausted, and the pouring sand 2 of the non-binder is maintained in the state of being compactly filled with the vibration table at the time of pouring, so as not to lose its shape.

このような消失模型鋳造法としては、古くから種々提案されており、例えば、次の技術が挙げられる。
特開平６−１１４４９６。 特開平８−１６８５。 As such a disappearance model casting method, various proposals have been made for a long time, and examples thereof include the following techniques.
JP-A-6-114496. JP-A-8-1685.

上述した消失模型鋳造法において、鋳枠１を減圧しながら注湯すると、消失模型３を燃やしながら湯が進入して行き、この際発生するガスが減圧手段９により吸引せられる。
このように、注湯は旨く行い得るが、解枠は、湯が凝固した時に、鋳枠１をクレーン（或いは自動反転機）を用いて反転させという方法を採って行われている。
このような方法によると、大量の粉塵と熱風が発生すると共に鋳物製品に接する鋳砂が４００℃乃至５００℃という高温のまま排出されることになり、事後処理に困るため、混合ドラム等を用いて冷たい砂と混合して冷却しなければならない。また、粉塵発生に対処するために、大掛かりなフードや集塵機を敷設しなければならないという問題があった。In the disappearance model casting method described above, when the molten metal is poured while decompressing the casting frame 1, the hot water enters while burning the disappearance model 3, and the generated gas is sucked by the decompression means 9.
In this way, pouring can be performed well, but unraveling is performed by reversing the casting frame 1 using a crane (or automatic reversing machine) when the hot water solidifies.
According to such a method, a large amount of dust and hot air is generated, and the casting sand in contact with the casting product is discharged at a high temperature of 400 ° C. to 500 ° C. Must be mixed with cold sand and cooled. Moreover, in order to cope with dust generation, there was a problem that a large hood and a dust collector had to be laid.

本発明は、かかる現状に鑑み、消失模型鋳造における解枠作業を、大掛かりな除塵装置を敷設することなく、また、鋳枠を反転させることなく鋳物製品を簡単に取り出すことが出来ながら同時に鋳砂全体を迅速に冷却できるようにすることを目的とする。  In view of the present situation, the present invention is able to easily remove a cast product without laying a large dust removing device and inverting the cast frame while simultaneously removing the cast frame in the disappearance model casting. The purpose is to be able to cool the whole quickly.

本発明にかかる消失模型鋳造法における解枠方法は、上記課題を解決するために、請求項１に記載の通り、消失模型を鋳枠に設置し、注湯時に鋳枠を減圧して発生ガスの吸引と鋳枠内の鋳砂の圧密強化を図るようにした消失模型鋳造法において、
解枠作業に先行して、前記鋳枠に圧縮エアを注入し、内部の鋳砂を流動化させて圧密状態を解除しながら鋳物製品を鋳枠から取り出すと同時に鋳砂を攪拌混合しながら冷却する、
ことを特徴とする。In order to solve the above-mentioned problem, the dismantling method in the vanishing model casting method according to the present invention is as described in claim 1, wherein the vanishing model is installed on the casting frame, and the generated gas is reduced in pressure during pouring. In the disappearance model casting method, which aims to strengthen the suction of the casting sand and consolidation of the casting sand in the casting frame,
Prior to the demolition work, compressed air is injected into the casting frame, the cast sand inside is fluidized to release the compacted state, and the cast product is taken out of the casting frame and simultaneously cooled while stirring and mixing the casting sand. To
It is characterized by that.

本発明において用いる消失模型としては、発泡スチロールが主であるが、他に、光硬貨型樹脂製の消失模型であってもよく、その他、既存の消失模型は全て適用できる。
また、注入される圧縮エアについては、通常の大気の他に、窒素などの不活性ガスを混入するようにしてもよい。As the disappearance model used in the present invention, foamed polystyrene is mainly used. However, an disappearance model made of an optical coin type resin may be used, and other existing disappearance models can be applied.
The compressed air to be injected may be mixed with an inert gas such as nitrogen in addition to the normal atmosphere.

本発明の方法によれば、消失模型鋳造における解枠作業を、大掛かりな除塵装置を敷設することなく、また、鋳枠を反転させることなく簡単に行い得ることが出来ながら同時に圧縮エアの注入により鋳砂全体を混合攪拌し、鋳砂を液化状態にしてその圧力を解除、鋳物製品を楽に取り出すことができながら、同時に迅速に鋳砂を冷却して後処理することができるという顕著な効果を奏するに至った。
本発明のその他の具体的な効果は、以下の記載から明らかとなろう。According to the method of the present invention, the unpacking work in the disappearance model casting can be easily performed without laying a large dust removing device and without reversing the casting frame, while simultaneously injecting compressed air. The entire casting sand is mixed and stirred, the casting sand is liquefied, the pressure is released, the casting product can be easily removed, and at the same time, the casting sand can be quickly cooled and post-treated. I came to play.
Other specific effects of the present invention will be apparent from the following description.

本発明の方法の実施に際しては、前記エアの圧送により、解枠時の鋳枠内の鋳砂の温度を７０℃〜１３０℃にまで低下させるのが好ましい。
このように、鋳砂を注入するエアを用いて７０℃〜１３０℃程度に冷却することで、事後処理を楽に行い得る。
また、このような鋳砂をこのような低温にすることで、発生する粉塵温度も低くなり、また、鋳砂に接触して危険性が低く、解枠作業を安全に行い得る。In carrying out the method of the present invention, it is preferable to reduce the temperature of the casting sand in the casting frame at the time of unpacking to 70 ° C. to 130 ° C. by pumping the air.
Thus, post-processing can be easily performed by cooling to about 70 to 130 degreeC using the air which inject | pours casting sand.
Moreover, by making such casting sand into such a low temperature, the generated dust temperature is also lowered, and the danger of being in contact with the casting sand is low, so that the unpacking operation can be performed safely.

また、圧送される前記エアの風速が、５ｍ／分〜２０ｍ／分であるのが好ましい。
前記エアの風速をこのような数値とすることで、鋳砂を十分に流動化させ、攪拌混合して冷却することができ、以って、鋳砂の液化状態により鋳砂の圧力を解除し、鋳造製品の取り出しを楽に行い得るようにすることが出来ると共に解枠を楽に行い鋳砂を所望の温度にまで冷却できる。Moreover, it is preferable that the wind speed of the said air pumped is 5m / min-20m / min.
By setting the air speed to such a numerical value, the sand can be sufficiently fluidized, stirred and mixed to be cooled, and thus the pressure of the sand can be released depending on the liquefaction state of the sand. The cast product can be easily taken out and the frame can be easily released to cool the casting sand to a desired temperature.

尚、本発明の実施として、減圧手段としての真空ポンプと、エア供給手段としてのブロアとを兼用利用しているが、別途に受けるようにしてもよいことは勿論である。  In the embodiment of the present invention, the vacuum pump as the decompression means and the blower as the air supply means are used together, but it is of course possible to receive them separately.

以下、本発明の実施の形態を、図面を参照して以下詳述する。
図１は、消失模型鋳造法を実施するときの鋳枠の縦断側面図であり、図において、１は、鋳枠（フラスコ）であり、２はノーバインダーの鋳砂、３は、消失模型であり、４は、セキ鉢を示す。また、５は、鋳砂２の上に被せられたビニールシートであり、減圧効果を発揮させるためのものである。６は、減圧を行うために鋳枠１の底部に設けられたパイプ状のフィルターであり、７は、このフィルター６を保護するエキスバンドである。前記フィルター６は、エア流路１３を形成しており、これがバキュームホース８を介して鋳枠１の外部の減圧手段１０（エア供給手段１４を兼ねる）、即ち、ここでは、ルーツ型ブロアに接続されている。１１は、解枠時に鋳物製品１２を取り出すクレーンのフックを示す。Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a longitudinal side view of a casting frame when the vanishing model casting method is carried out. In the figure, 1 is a casting frame (flask), 2 is a casting sand with no binder, and 3 is a vanishing model. Yes, 4 indicates a boiled pot. Reference numeral 5 denotes a vinyl sheet placed on the casting sand 2 for exhibiting a decompression effect. Reference numeral 6 denotes a pipe-like filter provided at the bottom of the casting frame 1 in order to perform decompression. Reference numeral 7 denotes an expander for protecting the filter 6. The filter 6 forms an air flow path 13, which is connected to a decompression means 10 (also serving as an air supply means 14) outside the casting frame 1 via a vacuum hose 8, that is, here, a roots type blower. Has been. Reference numeral 11 denotes a crane hook for taking out the cast product 12 when the frame is released.

前記バキュームホース８による配管には、三方弁１５、１６が設けられており、鋳込み時の吸引に際しては、三方弁１５により大気開放がなされ、圧縮エアの送付時には、三方弁１６が大気開放されるように構成されている。  The piping by the vacuum hose 8 is provided with three-way valves 15, 16. At the time of casting, the three-way valve 15 is opened to the atmosphere, and when sending compressed air, the three-way valve 16 is opened to the atmosphere. It is configured as follows.

尚、本実施例では、１１ＫＷのルーツ型ブロアを用いている。このルーツ型ブロアは、消失模型、鋳造製品の条件に照らして、鋳枠その減圧とエア注入（ガス排気、鋳砂流動と冷却）の目的を達成するものが用いられる。
この１１ＫＷのルーツ型ブロアは、前記風速を発生させるに十分な風量を送ることができるものである。即ち、前記風速が１０ｍの場合に、鋳枠が１ｍの四角形であれば、１０立方メートル／分である。In this embodiment, an 11 KW roots type blower is used. This Roots type blower is used to achieve the purpose of decompression of the casting frame and air injection (gas exhaust, casting sand flow and cooling) in light of the conditions of the disappearance model and the cast product.
This 11 KW Roots-type blower can send a sufficient air volume to generate the wind speed. That is, when the wind speed is 10 m and the casting frame is a square of 1 m, it is 10 cubic meters / minute.

注湯時に減圧手段１０を用いて鋳枠１を減圧するが、その理由は、注湯に伴って発泡模型が燃えることで大量のガスを発生するので、これを排気させること、また、注湯に際して、ノーバインダーの鋳砂２が振動テーブルで圧密充填した状態を維持させ、型崩れしないようにするためである。  The casting frame 1 is decompressed using the decompression means 10 at the time of pouring, because the foamed model burns with the pouring to generate a large amount of gas. At this time, the non-binder casting sand 2 is maintained in a state of being compactly filled with a vibration table so as not to lose its shape.

そして、本発明の解枠方法は、次のように実施される。
先ず、消失模型３を、床砂を入れた状態で鋳枠１に設置する。この鋳枠１は、底部にフィルター６とこれを保護するエキスバンド７を備えたものである。この鋳枠１を、振動テーブル（図外）等で鋳砂２を充填して、消失模型３の周囲で圧密状態とする（図１参照）。しかる後、鋳枠１の上面にビニールシート５が被せられる。Then, the unpacking method of the present invention is carried out as follows.
First, the disappearance model 3 is installed in the casting frame 1 with the floor sand in the state. The cast frame 1 includes a filter 6 and an extract band 7 for protecting the filter 6 at the bottom. The casting frame 1 is filled with casting sand 2 with a vibration table (not shown) or the like, and is brought into a compacted state around the vanishing model 3 (see FIG. 1). Thereafter, the vinyl sheet 5 is put on the upper surface of the casting frame 1.

この状態で、注湯が行われるが、その際は、ルーツ型ブロアの減圧手段１０を稼動させて、三方弁１５が大気開放され（三方弁１６は閉鎖）、フィルター６を介して鋳枠１の内部を真空にし（ビニールシート５が外気吸引を遮断）、注湯時に内部で型崩れを起こさないように鋳砂を圧密にすると共に消失模型が燃えることで発生するガスを外部に吸引、排気するのである。  In this state, pouring is performed. At that time, the decompression means 10 of the roots type blower is operated, the three-way valve 15 is opened to the atmosphere (the three-way valve 16 is closed), and the casting frame 1 is passed through the filter 6. The inside of the chamber is evacuated (the vinyl sheet 5 shuts off outside air suction), and the cast sand is consolidated to prevent the inside of the mold from collapsing during pouring, and the gas generated by burning the disappearing model is sucked and exhausted to the outside. To do.

その後、５分程度経過して、湯が凝固すると、三方弁１５が閉鎖され、三方弁１６が大気開放され、そして、前記減圧手段１０を駆動して送風機能を発揮させ、これをエア供給手段１４として稼動させるのである。そして、鋳枠１の内部にフィルター６を介して鋳枠１の下部から上方に向けて圧縮エアを供給する。  Thereafter, when hot water solidifies after about 5 minutes, the three-way valve 15 is closed, the three-way valve 16 is opened to the atmosphere, and the pressure reducing means 10 is driven to exert a blowing function, which is used as an air supply means. 14 is operated. Then, compressed air is supplied into the inside of the casting frame 1 from the lower part of the casting frame 1 upward through the filter 6.

この際、上記ビニールシート５は予め取り除かれる。そして、この時、鋳砂２を通過するエアの流速は、１０ｍ／ｍｉｎ程度に設定されている。これにより、ノーバインダーの鋳砂２は流動し、攪拌され、鋳物で製品近辺の厚い鋳砂２と、ノーバインダーの鋳砂２は流動し、攪拌され、鋳物で製品近辺の厚い鋳砂２と、離れた位置の比較的冷たい鋳砂２とが混合され、熱交換を起こして全体が冷却されるのであり、約１００℃程度にまで温度降下する。この温度は、風量、送風時間によるが、７０℃〜１３０℃となれば十分であり、勿論、この温度近辺であっても本発明の目的は達成できる。  At this time, the vinyl sheet 5 is removed in advance. At this time, the flow velocity of air passing through the casting sand 2 is set to about 10 m / min. As a result, the non-binder casting sand 2 flows and is agitated, and the casting sand 2 is thick in the vicinity of the product, and the no-binder casting sand 2 is fluidized and agitated, and the casting is thick in the vicinity of the product 2 and The relatively cold casting sand 2 at a distant position is mixed, heat exchange is performed and the whole is cooled, and the temperature drops to about 100 ° C. Although this temperature depends on the air volume and the blowing time, it is sufficient that the temperature is 70 ° C. to 130 ° C. Of course, the object of the present invention can be achieved even in the vicinity of this temperature.

この圧縮エアを鋳砂２に吹き込むことで、鋳砂２を流動させ、迅速に温度降下を図るとについて、実験を行った結果を、図３及び図４のグラフに示す。
図３図は、この方法を行った実験であり、所定の円筒状の容器に入れた鋳砂の中間部を、その上下位置の鋳砂よりも高温に加熱（１８０℃）し、しかる後に圧縮エアを、１０ｍ／ｍｉｎで下方から送り込んだものであり、その鋳砂の流動、攪拌により、冷却が迅速なものとなることが分かる。
図４は、同様の条件で鋳砂が加熱されてが、これを自然冷却したときの温度降下を示す。
両者の比較から、圧縮エアの注入による鋳砂の流動、混合による温度降下が著しいことが分かる。The graph of FIG.3 and FIG.4 shows the result of having experimented about making the sand 2 flow by blowing this compressed air into the sand 2 and aiming at temperature fall rapidly.
FIG. 3 shows an experiment in which this method was performed, in which the intermediate portion of the cast sand placed in a predetermined cylindrical container was heated to a higher temperature (180 ° C.) than the cast sand at the upper and lower positions, and then compressed. It is understood that air is sent from below at 10 m / min, and cooling is quick due to the flow and stirring of the casting sand.
FIG. 4 shows the temperature drop when the casting sand is heated under the same conditions and is naturally cooled.
From the comparison between the two, it can be seen that the flow of casting sand due to injection of compressed air and the temperature drop due to mixing are remarkable.

しかる後、鋳砂２が圧縮エアにより流動され、攪拌されている状態で、フック１１を用いてクレーンで鋳物製品１２を吊り下げ、鋳枠１から取り出すのである。
このように、鋳砂２が圧縮エアにより流動されている状態は、液状化の状態であり、堆積の砂圧が無いに等しく、容易に引き抜くことが可能であり、従って、従来のように鋳枠１を反転させる必要はなく、それ故、発塵も少ないのである。Thereafter, in a state where the casting sand 2 is fluidized and stirred by the compressed air, the cast product 12 is suspended by the crane using the hook 11 and is taken out from the casting frame 1.
Thus, the state where the casting sand 2 is flowing by the compressed air is a liquefied state, which is equivalent to the absence of accumulated sand pressure, and can be easily pulled out. There is no need to invert the frame 1 and therefore less dust is generated.

上記のように、エア注入に際し、注湯時の減圧に用いた流路をそのまま利用し、ここを通じてエアを圧入させるようにすることで、格別にエア圧送のための流路を準備、作成する必要がなく、作業が簡単で済む。  As described above, when air is injected, the flow path used for pressure reduction during pouring is used as it is, and air is press-fitted through this to prepare and create a flow path for air pressure feeding. There is no need and work is easy.

本発明の方法及び装置は、消失模型を用いる鋳造方法に全て適用可能なもので、  The method and apparatus of the present invention are all applicable to a casting method using a disappearance model,

本発明にかかる消失模型鋳造のための解枠方法の一工程を示す全体の概略側面図である。It is the whole schematic side view which shows 1 process of the demolition method for vanishing model casting concerning this invention. 本発明にかかる消失模型鋳造のための解枠方法の一工程を示す全体の概略側面図である。It is the whole schematic side view which shows 1 process of the demolition method for vanishing model casting concerning this invention. 本発明にかかる消失模型鋳造のための解枠方法の実験例を示すグラフである。It is a graph which shows the experimental example of the open frame method for the vanishing model casting concerning this invention. 従来技術にかかる消失模型鋳造のための解枠方法の実験例を示すグラフである。It is a graph which shows the experimental example of the open frame method for vanishing model casting concerning a prior art. 従来技術にかかる消失模型鋳造のための解枠方法を示す概略縦断側面図である。It is a general | schematic longitudinal cross-sectional side view which shows the open frame method for the vanishing model casting concerning a prior art.

符号の説明Explanation of symbols

１：鋳枠
２：鋳砂
３：消失模型
６：フィルター
７：エキスバンド
１０：減圧手段
１４：エア供給手段1: Casting frame 2: Casting sand 3: Disappearance model 6: Filter 7: Extract band 10: Pressure reducing means 14: Air supply means

Claims (4)

消失模型を鋳枠に設置し、注湯時に鋳枠を減圧して発生ガスの吸引と鋳枠内の鋳砂の圧密強化を図るようにした消失模型鋳造法において、
解枠作業に先行して、前記鋳枠に圧縮エアを注入し、内部の鋳砂を流動化させて圧密状態を解除しながら鋳物製品を鋳枠から取り出すと同時に鋳砂を攪拌混合しながら冷却する、
ことを特徴とする消失模型鋳造法における解枠方法。In the disappearance model casting method, the disappearance model is installed in the casting frame, and the casting frame is decompressed during pouring to suck the generated gas and strengthen the consolidation of the casting sand in the casting frame.
Prior to the demolition work, compressed air is injected into the casting frame, the cast sand inside is fluidized to release the compacted state, and the cast product is taken out of the casting frame and simultaneously cooled while stirring and mixing the casting sand. To
A disassembling method in the disappearing model casting method characterized by the above. 前記エアの圧送により、解枠時の鋳枠内の鋳砂の温度を７０℃〜１３０℃にまで低下させる、
ことを特徴とする請求項１の消失模型鋳造法における解枠方法。By pumping the air, the temperature of the casting sand in the casting frame at the time of unpacking is reduced to 70 ° C. to 130 ° C.,
The disassembling method in the disappearance model casting method according to claim 1. 前記エアの圧送が、鋳枠の減圧に使用された流路を使用して行われる、
ことを特徴とする請求項１又は請求項３の消失模型鋳造法における解枠方法。The air pumping is performed using the flow path used to depressurize the casting frame.
The disassembling method in the vanishing model casting method according to claim 1 or claim 3, wherein: 圧送される前記エアの風速が、５ｍ／分〜２０ｍ／分である、
ことを特徴とする請求項１乃至請求項３の消失模型鋳造法における解枠方法。The wind speed of the air being pumped is 5 m / min to 20 m / min,
The disassembling method in the disappearance model casting method according to any one of claims 1 to 3.
JP2007089370A 2007-03-01 2007-03-01 Mold removal method in lost foam casting method Pending JP2008213029A (en)

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CN103822803A (en) * 2014-02-28 2014-05-28 湖北工业大学 Sand casting tail gas acquisition device and method
CN105397027A (en) * 2015-12-02 2016-03-16 株洲中航动力精密铸造有限公司 Casting method of casting
CN106513580A (en) * 2017-01-04 2017-03-22 烟台众达模具铸造有限责任公司 Lost foam resin sand negative-pressure casting process and special device thereof
CN107716863A (en) * 2017-09-12 2018-02-23 东方电气集团东方汽轮机有限公司 A kind of combustion engine turbine bucket casting method
CN109550893A (en) * 2017-09-25 2019-04-02 高淳县龙宁精密铸造有限公司 Pedestal evaporative pattern and its method for crucible former
CN109550895A (en) * 2017-09-25 2019-04-02 高淳县龙宁精密铸造有限公司 Crossbeam evaporative pattern and its method for casting beam
CN110026018A (en) * 2019-04-08 2019-07-19 黄莹 A kind of air separation pearlife suction unit, monitoring system and repair method
CN116079007A (en) * 2023-04-07 2023-05-09 蓬莱金创精密铸造有限公司 Casting die for automobile exhaust connector and manufacturing process

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103822803A (en) * 2014-02-28 2014-05-28 湖北工业大学 Sand casting tail gas acquisition device and method
CN105397027A (en) * 2015-12-02 2016-03-16 株洲中航动力精密铸造有限公司 Casting method of casting
CN106513580A (en) * 2017-01-04 2017-03-22 烟台众达模具铸造有限责任公司 Lost foam resin sand negative-pressure casting process and special device thereof
CN107716863A (en) * 2017-09-12 2018-02-23 东方电气集团东方汽轮机有限公司 A kind of combustion engine turbine bucket casting method
CN109550893A (en) * 2017-09-25 2019-04-02 高淳县龙宁精密铸造有限公司 Pedestal evaporative pattern and its method for crucible former
CN109550895A (en) * 2017-09-25 2019-04-02 高淳县龙宁精密铸造有限公司 Crossbeam evaporative pattern and its method for casting beam
CN110026018A (en) * 2019-04-08 2019-07-19 黄莹 A kind of air separation pearlife suction unit, monitoring system and repair method
CN116079007A (en) * 2023-04-07 2023-05-09 蓬莱金创精密铸造有限公司 Casting die for automobile exhaust connector and manufacturing process

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