JPH079081A - Lost foam pattern casting method - Google Patents
Lost foam pattern casting methodInfo
- Publication number
- JPH079081A JPH079081A JP15769593A JP15769593A JPH079081A JP H079081 A JPH079081 A JP H079081A JP 15769593 A JP15769593 A JP 15769593A JP 15769593 A JP15769593 A JP 15769593A JP H079081 A JPH079081 A JP H079081A
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、消失模型鋳造方法に係
り、特に、消失性材料からなる膜状成形体と発泡成形体
を組み合せた消失模型により鋳造する場合に、消失模型
に対して補正を考慮しないで所定形状の製品を製造でき
るようにしたものに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vanishing model casting method, and more particularly, in the case of casting a vanishing model in which a film-shaped molded body made of a vanishable material and a foamed molded body are combined, the vanishing model is corrected. The present invention relates to a product capable of manufacturing a product having a predetermined shape without considering the above.
【０００２】[0002]
【従来の技術】消失模型鋳造方法の一つとして、消失性
の膜状成形体と発泡成形体を一体化した消失模型を使用
する方法がある。この方法を図１２を参照して説明す
る。図示したものは自動車用エンジンのインテークマニ
ホールドのような中空部を有する製品を鋳造する場合の
消失模型である。まず、消失性材料からなる膜状成形体
１０１を成形する。このものは消失性材料（例えば、ポ
リエチレン、ポリプロピレン等）よりなり、ブロー成形
等により形成されるものであって、タンク部１０５と複
数のポート部１０７とよりなり、その内面は製品の中空
部内面の所定形状に形成される。2. Description of the Related Art As one of the methods of casting a disappearing model, there is a method of using a disappearing model in which an extinguishing film-like molded product and a foamed molded product are integrated. This method will be described with reference to FIG. What is shown is a vanishing model when casting a product having a hollow portion such as an intake manifold of an automobile engine. First, the film-shaped molded body 101 made of a disappearing material is molded. This is made of a fusible material (for example, polyethylene, polypropylene, etc.) and is formed by blow molding or the like. It is composed of a tank portion 105 and a plurality of port portions 107, the inner surface of which is the inner surface of the hollow portion of the product. Is formed into a predetermined shape.
【０００３】次に、上記膜状成形体１０１を発泡成形型
内に配置し、発泡成形型と膜状成形体との間に発泡ビー
ズを充填し、それを蒸気により加熱・発泡させて膜状成
形体１０１と発泡成形体１０３とを一体化させ、消失模
型１０９を形成する。Next, the film-shaped molded product 101 is placed in a foam molding die, foam beads are filled between the foam molding die and the film-molded product, and the beads are heated and foamed by steam to form a film-shaped product. The molded body 101 and the foamed molded body 103 are integrated to form a vanishing model 109.
【０００４】次に、上記消失模型１０９を発泡成形型よ
り取り出し、膜状成形体１のはみ出した部分を除去し、
消失模型１０９にランナー・湯口を接着・固定し、消失
模型１０９の表面に塗型剤を塗布する。そして、消失模
型１０９を鋳枠内に配置して乾燥砂を充填し鋳型を完成
させた後、湯口から溶湯を注湯する。それによって、消
失模型が消失してその部分が溶湯と置換され、消失模型
と同じ形状の製品が鋳造される。Next, the disappearing model 109 is taken out from the foaming mold and the protruding portion of the film-shaped molded body 1 is removed.
A runner and a sprue are adhered and fixed to the disappearing model 109, and a coating agent is applied to the surface of the disappearing model 109. Then, the vanishing model 109 is placed in the flask and filled with dry sand to complete the mold, and then the molten metal is poured from the gate. As a result, the disappeared model disappears and the portion is replaced with the molten metal, and a product having the same shape as the disappeared model is cast.
【０００５】[0005]
【発明が解決しようとする課題】このような膜状成形体
１０１と発泡成形体１０３とを一体化した消失模型１０
９を使用して鋳造を行う場合、消失模型１０９の寸法形
状の変化が著しく、安定した品質の製品が製造できない
という問題があった。すなわち、膜状成形体１０１は成
形後の収縮率が小さく経時変化も少ないのに対して、発
泡成形体１０３は成形後の収縮率が大きく経時変化も顕
著であるので、消失模型として所定の寸法形状を得るの
が困難であった。Disappearance model 10 in which such a film-shaped molded body 101 and a foamed molded body 103 are integrated.
When casting is performed using No. 9, there is a problem that the dimensional shape of the disappearance model 109 is remarkably changed and a product of stable quality cannot be manufactured. That is, the film-shaped molded body 101 has a small shrinkage rate after molding and little change with time, whereas the foamed molded body 103 has a large shrinkage rate after molding and a remarkable change with time. It was difficult to get the shape.
【０００６】又、発泡成形体は発泡成形時より３０日程
度経過すると収縮が安定するが、成形当初よりかなり収
縮するので、膜状成形体と発泡成形体との間で応力が発
生し、図１２中一点鎖線で示すような反りによる変形又
は符号１１１で示すような割れやひびが入るなど正確な
形状の品質管理が困難であった。又、消失模型の寸法形
状を発泡成形体の収縮を見込んで予め製品とは異なる寸
法形状に設定しなければならないという問題もあった。
本発明はこのような点に基づいてなされたものでその目
的とするところは、正確な寸法形状の製品を安定して製
造することができる消失模型鋳造方法を提供することに
ある。Although the shrinkage of the foamed molded product is stable after about 30 days from the time of foam molding, it shrinks considerably from the beginning, so that stress is generated between the film-shaped molded product and the foamed molded product. It was difficult to accurately control the quality of the shape such as the deformation due to the warp as indicated by the alternate long and short dash line in 12 or the crack or crack as indicated by the reference numeral 111. There is also a problem that the size and shape of the disappearance model must be set in advance to a size and shape different from that of the product in consideration of shrinkage of the foamed molded product.
The present invention has been made on the basis of such a point, and an object of the present invention is to provide a vanishing model casting method capable of stably producing a product having an accurate size and shape.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成するべく
本願発明による消失模型鋳造方法は、消失性材料からな
る膜状成形体を成形し、上記膜状成形体に発泡成形体を
一体化して消失模型を形成し、上記消失模型を鋳枠内に
配置して砂を充填し鋳型を形成させた後、上記消失模型
に溶湯を注湯し、所定形状の製品を鋳造する消失模型鋳
造方法において、上記鋳型の形成時期を発泡成形体の発
泡成形時より１５時間〜２０日後に行うようにしたこと
を特徴とするものである。In order to achieve the above object, a method for casting a disappearing model according to the present invention is to form a film-shaped molded product made of a disappearing material, and integrate the foamed molded product with the film-shaped molded product. In the vanishing model casting method of forming a vanishing model, placing the vanishing model in a casting mold to form a mold by filling with sand, pouring molten metal into the vanishing model, and casting a product of a predetermined shape. The mold is formed 15 hours to 20 days after the foam molding of the foam molded article.
【０００８】[0008]
【作用】本発明は、鋳型の形成時期を発泡成形体の成形
時より１５時間〜２０日後に行うようにしたものであ
る。発泡成形体は、発泡成形時に冷却され型寸法より収
縮した状態で成形型より取り出されるが、大気中に開放
されると発泡ビーズ内部の潜熱によって膨張を始め、発
泡成形時より１５時間後に最も型寸法に近い状態となる
とともに、水分が鋳造に影響を及ぼさない量まで減少す
る。そして、この収縮率の最小安定期は発泡成形時より
２０日後まで続く。この間、消失模型は製品の所定形状
になる。そこで、この間に鋳型を形成すれば、消失模型
の変形は抑えられ、消失模型に溶湯を注湯することによ
り所望の寸法形状の製品を製造することができる。又、
これにより消失模型は発泡成形体の収縮変形を見込んで
過大の寸法形状を設計する必要がない。According to the present invention, the mold is formed 15 hours to 20 days after the foamed molded product is molded. The foamed molded product is taken out of the mold in a state of being cooled during foam molding and shrinking from the mold size. However, when it is opened to the atmosphere, it begins to expand due to latent heat inside the foam beads, and after 15 hours from the time of foam molding, the mold is most expanded. As it approaches the size, the water content is reduced to an amount that does not affect casting. Then, the minimum stable period of the shrinkage rate continues until 20 days after the foam molding. During this time, the disappearance model becomes the predetermined shape of the product. Therefore, if a mold is formed in the meantime, deformation of the disappearance model can be suppressed, and by pouring molten metal into the disappearance model, a product having a desired size and shape can be manufactured. or,
As a result, it is not necessary to design the vanishing model with an excessively large size and shape in consideration of shrinkage deformation of the foamed molded product.
【０００９】[0009]
【実施例】以下、図１乃至図１１を参照して本発明の一
実施例を説明する。本実施例は自動車用エンジンのイン
テークマニホールドを本発明の方法により製造するもの
である。まず、膜状成形体１を成形する。この膜状成形
体１は熱可塑性の消失性材料（例えば、ポリエチレン、
ポリプロピレン等）よりなり、中空状のものである。こ
の膜状成形体の成形に際しては、図１に示すようにブロ
ー成形型３内に消失性材料よりなるパリソン（膜状体）
４を挿入し、吹き込み口５を介して空気等を吹き込む。
これにより、図２に示すように消失性材料を成形型３の
中空形状に沿って膨張させ、所定形状の膜状成形体１を
形成するものである。上記膜状成形体１は内面が製品の
中空部内面の形状と一致するように形成する。この膜状
成形体１は収縮率が小さく、かつ、経時変化も少なく寸
法形状が安定しているものである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In this embodiment, an intake manifold for an automobile engine is manufactured by the method of the present invention. First, the film-shaped molded body 1 is molded. This film-shaped molded body 1 is made of a thermoplastic dissipative material (for example, polyethylene,
It is made of polypropylene or the like) and is hollow. When molding this film-shaped molded product, as shown in FIG. 1, a parison (film-shaped product) made of a fusible material is formed in the blow mold 3.
4 is inserted, and air or the like is blown in through the blowing port 5.
As a result, as shown in FIG. 2, the fugitive material is expanded along the hollow shape of the molding die 3 to form the film-shaped molded body 1 having a predetermined shape. The film-shaped molded product 1 is formed so that the inner surface thereof matches the shape of the inner surface of the hollow portion of the product. The film-shaped molded product 1 has a small shrinkage ratio, a small change with time, and a stable size and shape.
【００１０】次に、図３に示すように膜状成形体１の表
面に発泡成形体７を一体化させて消失模型９を形成す
る。これはたとえばインサート成形法により行うもので
あって、膜状成形体１を発泡成形型１１の中空部１３内
の所定位置に配置・固定し、発泡成形型１１の中空部１
３と膜状成形体１との間に発泡ビーズを充填し、次に発
泡成形型１１内に蒸気を供給し加熱・発泡させるもので
ある。尚、この場合、吹き込み口５にノズル１４を配置
して膜状成形体１の内部に流体等を充填し、バックアッ
ブするものである。これにより、膜状成形体１と発泡成
形体７が一体化したものが形成され、このものから、吹
き込み口５等の不要部分を除去して、図４に示すような
消失模型９が形成される。Next, as shown in FIG. 3, the foamed molded body 7 is integrated with the surface of the film-shaped molded body 1 to form a vanishing model 9. This is performed by, for example, the insert molding method, and the film-shaped molded body 1 is arranged and fixed at a predetermined position in the hollow portion 13 of the foam molding die 11 to form the hollow portion 1 of the foam molding die 11.
3 is filled with foam beads, and then steam is supplied into the foam mold 11 to heat and foam. In this case, the nozzle 14 is arranged at the blowing port 5 to fill the inside of the film-shaped molded product 1 with a fluid or the like and back up. As a result, the film-shaped molded body 1 and the foamed molded body 7 are integrated, and unnecessary parts such as the blow-in port 5 are removed from the molded body to form the disappearance model 9 as shown in FIG. It
【００１１】次に、図５に示すように消失模型９にラン
ナー・湯口１５を接着・固定し、消失模型９の表面に塗
型剤を塗布する。そして、消失模型９を鋳枠１７内に配
置し、その周囲に砂１９を充填して鋳型を形成し、しか
る後、消失模型９に溶湯を注湯する。これにより、溶湯
が消失模型９を消失させて金属との置換がなされ所定形
状の製品が鋳造される。後はこのものからランナー・湯
口の部分を切除して、図６に示すような所定形状の製品
２１が得られる。Next, as shown in FIG. 5, the runner / gate 15 is adhered / fixed to the disappearing model 9, and a coating agent is applied to the surface of the disappearing model 9. Then, the vanishing model 9 is placed in the casting frame 17, sand 19 is filled around it to form a mold, and then molten metal is poured into the vanishing model 9. As a result, the molten metal causes the disappeared model 9 to disappear and is replaced with a metal, and a product having a predetermined shape is cast. After that, the runner and the sprue are cut off from this product to obtain a product 21 having a predetermined shape as shown in FIG.
【００１２】ところで、上記の鋳型の形成時期である
が、これは発泡成形体７の発泡成形時から１５時間〜２
０日後に行うものである。その理由を図７乃至図１１に
基づいて説明する。図７は、発泡成形体７の発泡成形後
の寸法変化を示すもので、横軸は時間（日時）を示し、
成形時とは型から抜き出した状態である。又、縦軸は型
寸法を０として発泡成形体７の収縮率（％）を示すもの
である。By the way, the time for forming the above-mentioned mold is 15 hours to 2 from the time of foam molding of the foam molded body 7.
It will be done in 0 days. The reason will be described based on FIGS. 7 to 11. FIG. 7 shows a dimensional change of the foam molded body 7 after foam molding, in which the horizontal axis represents time (date and time),
At the time of molding is a state of being extracted from the mold. The vertical axis represents the shrinkage rate (%) of the foamed molded body 7 with the mold dimension set to 0.
【００１３】又、図８〜図１１は、発泡成形体７の寸法
変化に伴う消失模型９の形状の変化を示す図であり、消
失模型９の一部を拡大して示すものである。図７中Ａで
示すように、発泡成形体７は発泡成形後、成形型を冷却
して型抜きするため収縮して、型寸法より小さくなって
いる。このとき、消失模型９は、膜状成形体１が変形し
ていないのに対して発泡成形体７が収縮した状態とな
り、図８に示す所定の寸法形状と比較すると、図９に示
すように変形した状態となっている。FIGS. 8 to 11 are views showing changes in the shape of the disappearance model 9 due to the dimensional changes of the foamed molded body 7, and show a part of the disappearance model 9 in an enlarged manner. As indicated by A in FIG. 7, after the foam molding, the foam molded body 7 contracts to cool the molding die for die cutting after the foam molding, and is smaller than the die size. At this time, the disappearance model 9 is in a state in which the foamed molded body 7 is contracted while the film-shaped molded body 1 is not deformed, and when compared with the predetermined size and shape shown in FIG. 8, as shown in FIG. It is in a deformed state.
【００１４】続いて、上記発泡成形体７は成形型より取
り出されて大気に開放されると次第に膨張する。これ
は、発泡ビーズ内部の潜熱により、ビーズ内に封入され
た気体が膨張するからである。そして、発泡成形体７は
発泡成形時より１５時間後、膨張して図７中Ｂで示すよ
うに最も成形型寸法に近付き、消失模型９は図１０に示
すように変形のない形状となる。又、この発泡成形時よ
り１５時間後に、発泡成形体７中の水分が鋳造に影響を
及ぼさない量まで減少する。そして、発泡成形体７の収
縮率は発泡成形後２４時間を境にして収縮に向かうが、
収縮率の最小安定時期は発泡成形時より２０日後まで継
続する。Subsequently, the foamed molded body 7 is gradually expanded when taken out from the molding die and opened to the atmosphere. This is because the gas enclosed in the beads expands due to the latent heat inside the expanded beads. Then, after 15 hours from the time of foam molding, the foam molded body 7 expands and comes closest to the mold size as shown by B in FIG. 7, and the disappearance model 9 becomes a shape without deformation as shown in FIG. Also, 15 hours after the foam molding, the water content in the foam molded body 7 decreases to an amount that does not affect the casting. Then, the shrinkage rate of the foam-molded body 7 tends to shrink at 24 hours after foam-molding,
The minimum stable period of shrinkage continues until 20 days after foam molding.
【００１５】更に、発泡成形時から２０日経過後は、発
泡ビーズ内の熱が逃げて常温になると、発泡ビーズ内は
負圧状態となるので、発泡ビーズ内に大気中から空気が
入り込み、成形時の気体が外気と置換されていく。した
がって、発泡成形体７は収縮していき、図１０に示すよ
うに消失模型９は変形した状態となる。その後図７中Ｃ
で示すように、発泡成形時から３０日後、収縮量は一定
となる。Further, after 20 days have passed from the time of foam molding, when the heat inside the foam beads escapes and reaches room temperature, the inside of the foam beads becomes a negative pressure state, so air enters from the atmosphere into the foam beads, and at the time of molding. The gas is replaced with outside air. Therefore, the foamed molded body 7 shrinks, and the disappearing model 9 is deformed as shown in FIG. After that, C in Fig. 7
As shown by, the shrinkage amount becomes constant 30 days after the foam molding.
【００１６】このような発泡成形体７の寸法変化と消失
模型９の形状変化の状態から、消失模型を鋳枠に配置し
砂を充填する鋳型の形成時期を発泡成形体７が型寸法に
最も近付く発泡成形時より１５時間〜２０日後とするこ
とにより、消失模型９が変形のない、製品の所定の寸法
形状に最も近い時期に、鋳型を形成するものである。一
端、鋳型を形成した後は、消失模型は砂により固定され
るので変形することはなく、消失模型９に対して溶湯を
注湯する時期は任意であるが、その時期は可及的に早い
ほうが望ましいものである。From the state of the dimensional change of the foamed molded body 7 and the shape change of the vanishing model 9, the foamed molded body 7 is placed in the mold dimension at the time of forming the mold in which the vanishing model is placed in the flask and is filled with sand. By 15 hours to 20 days after the approaching foam molding, the mold is formed at the time when the disappearing model 9 is closest to the predetermined size and shape of the product without deformation. On the other hand, after the mold is formed, the vanishing model is fixed by sand so that it does not deform, and the time for pouring the molten metal to the vanishing model 9 is arbitrary, but that time is as early as possible. It is more desirable.
【００１７】以上本実施例によると次のような効果を奏
することができる。まず、鋳型を形成する時期を発泡成
形体７が型寸法に最も近付く発泡成形時より１５時間〜
２０日後としたので、消失模型９が製品の所定の寸法形
状となる時期に溶湯を注湯することにより、変形のない
正確な寸法形状の製品を得ることができる。又、これに
より、消失模型９は発泡成形体の収縮変形を見込んで過
大な寸法形状を設計する必要がなく、製品形状からの修
正が不要であり、品質の安定又は製造が容易になるもの
である。According to this embodiment, the following effects can be obtained. First, the time for forming the mold is 15 hours from the time of foam molding when the foam molded body 7 comes closest to the mold size.
Since it is after 20 days, by pouring the molten metal at the time when the disappearance model 9 has a predetermined size and shape of the product, it is possible to obtain a product having an accurate size and shape without deformation. Further, as a result, the disappearing model 9 does not need to be designed with an excessively large size and shape in consideration of the shrinkage deformation of the foamed molded body, and the correction from the product shape is not necessary, so that the quality is stable or the manufacturing is easy. is there.
【００１８】尚、本発明は上記一実施例に限定されな
い。まず、膜状成形体１と発泡成形体７とを一体化する
方法としては、インサート成形のほか、発泡成形体を分
割成形したものを接着や溶着等により一体化する等の手
段によってもよい。この場合は発泡成形時より１５時間
〜２０日後に一体化するものである。又、上記実施例で
は膜状成形体１の外表面に発泡成形体７を一体化したも
のを示したが、膜状成形体と発泡成形体との組み合わせ
の態様は任意であり、膜状成形体の内表面に発泡成形体
を一体化するような場合でもよい。The present invention is not limited to the above embodiment. First, as a method for integrating the film-shaped molded product 1 and the foamed molded product 7, in addition to insert molding, a method may be used in which the foamed molded product is divided and molded, and the molded product is integrated by adhesion or welding. In this case, they are integrated after 15 hours to 20 days from the time of foam molding. Further, although the foamed molded body 7 is integrated on the outer surface of the membranous molded body 1 in the above-mentioned embodiment, the combination of the membranous molded body and the foamed molded body is arbitrary, and the membranous molded body may be formed. The case where the foamed molded body is integrated with the inner surface of the body may be used.
【００１９】[0019]
【発明の効果】以上詳述したように本発明の消失模型鋳
造方法によると、鋳型の形成時期を発泡成形体の成形時
より１５時間〜２０日後に行うことにより変形のない正
確な寸法形状の製品を製造することができ、又、消失模
型の製造も容易となるものである。As described in detail above, according to the vanishing model casting method of the present invention, the mold is formed at a time of 15 hours to 20 days after the foamed molded article is molded, so that an accurate dimensional shape without deformation can be obtained. The product can be manufactured, and the disappearance model can be easily manufactured.
【図面の簡単な説明】[Brief description of drawings]
【図１】本発明の一実施例を示す図でブロー成形型の断
面図である。FIG. 1 is a sectional view of a blow molding die showing an embodiment of the present invention.
【図２】本発明の一実施例を示す図で図１のＤ−Ｄ断面
図である。FIG. 2 is a view showing an embodiment of the present invention and is a sectional view taken along the line DD of FIG.
【図３】本発明の一実施例を示す図で発泡成形型による
発泡成形の様子を示す断面図である。FIG. 3 is a cross-sectional view showing an embodiment of the present invention in which foam molding is performed by a foam molding die.
【図４】本発明の一実施例を示す図で消失模型を示す断
面図である。FIG. 4 is a cross-sectional view showing a vanishing model in a view showing an embodiment of the present invention.
【図５】本発明の一実施例を示す図で鋳型を示す断面図
である。FIG. 5 is a cross-sectional view showing a mold according to an embodiment of the present invention.
【図６】本発明の一実施例を示す図で製品を示す断面図
である。FIG. 6 is a cross-sectional view showing a product according to an embodiment of the present invention.
【図７】本発明の一実施例を示す図で発泡成形体の経時
変化の状態を示す図である。FIG. 7 is a view showing an example of the present invention and is a view showing a state of change over time of the foamed molded article.
【図８】本発明の一実施例を示す図で消失模型の所定形
状を示す図である。FIG. 8 is a diagram showing an embodiment of the present invention and is a diagram showing a predetermined shape of a vanishing model.
【図９】本発明の一実施例を示す図で消失模型の寸法変
化の状態を示す図である。FIG. 9 is a diagram showing an embodiment of the present invention and is a diagram showing a state of dimensional change of a vanishing model.
【図１０】本発明の一実施例を示す図で消失模型の寸法
変化の状態を示す図である。FIG. 10 is a diagram showing an example of the present invention and is a diagram showing a state of dimensional change of a vanishing model.
【図１１】本発明の一実施例を示す図で消失模型の寸法
変化の状態を示す図である。FIG. 11 is a diagram showing an example of the present invention and is a diagram showing a state of dimensional change of a vanishing model.
【図１２】従来の消失模型を示す断面図である。FIG. 12 is a cross-sectional view showing a conventional disappearance model.
１ 膜状成形体 ７ 発泡成形体 ９ 消失模型 １７ 鋳枠 １９ 砂 1 Membrane-shaped molded body 7 Foamed molded body 9 Disappearance model 17 Casting frame 19 Sand
Claims (1)
し、上記膜状成形体に発泡成形体を一体化して消失模型
を形成し、上記消失模型を鋳枠内に配置して砂を充填し
鋳型を形成させた後、上記消失模型に溶湯を注湯し、所
定形状の製品を鋳造する消失模型鋳造方法において、上
記鋳型の形成時期を発泡成形体の発泡成形時より１５時
間〜２０日後に行うようにしたことを特徴とする消失模
型鋳造方法。1. A film-shaped molded product made of a fugitive material is molded, and a foamed molded product is integrated with the film-shaped molded product to form a vanishing model, and the vanishing model is placed in a flask to remove sand. In a disappearance model casting method in which a molten metal is poured into the disappearance model after filling and a mold is formed to cast a product having a predetermined shape, the mold is formed at a time of from 15 hours to 20 hours from the time of foam molding of the foam molded body. A vanishing model casting method characterized by being performed after a day.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15769593A JP3173686B2 (en) | 1993-06-28 | 1993-06-28 | Vanishing model casting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15769593A JP3173686B2 (en) | 1993-06-28 | 1993-06-28 | Vanishing model casting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH079081A true JPH079081A (en) | 1995-01-13 |
| JP3173686B2 JP3173686B2 (en) | 2001-06-04 |
Family
ID=15655369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15769593A Expired - Fee Related JP3173686B2 (en) | 1993-06-28 | 1993-06-28 | Vanishing model casting method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3173686B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002143985A (en) * | 2000-11-15 | 2002-05-21 | Achilles Corp | Foaming block body for casting lost foam pattern |
-
1993
- 1993-06-28 JP JP15769593A patent/JP3173686B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002143985A (en) * | 2000-11-15 | 2002-05-21 | Achilles Corp | Foaming block body for casting lost foam pattern |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3173686B2 (en) | 2001-06-04 |
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