JPH0677786B2 - Vanishing model casting method - Google Patents
Vanishing model casting methodInfo
- Publication number
- JPH0677786B2 JPH0677786B2 JP63101683A JP10168388A JPH0677786B2 JP H0677786 B2 JPH0677786 B2 JP H0677786B2 JP 63101683 A JP63101683 A JP 63101683A JP 10168388 A JP10168388 A JP 10168388A JP H0677786 B2 JPH0677786 B2 JP H0677786B2
- Authority
- JP
- Japan
- Prior art keywords
- mold
- sand
- casting
- pouring
- oxygen
- 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.)
- Expired - Lifetime
Links
- 238000005266 casting Methods 0.000 title claims description 51
- 238000000034 method Methods 0.000 title claims description 18
- 239000004576 sand Substances 0.000 claims description 48
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 30
- 239000001301 oxygen Substances 0.000 claims description 30
- 229910052760 oxygen Inorganic materials 0.000 claims description 30
- 239000002184 metal Substances 0.000 claims description 25
- 239000011261 inert gas Substances 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 5
- 230000008033 biological extinction Effects 0.000 claims description 3
- 239000000178 monomer Substances 0.000 description 19
- 230000008034 disappearance Effects 0.000 description 14
- 239000007788 liquid Substances 0.000 description 12
- 239000007789 gas Substances 0.000 description 11
- 230000007547 defect Effects 0.000 description 10
- 238000002485 combustion reaction Methods 0.000 description 8
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- -1 for example Polymers 0.000 description 2
- 229920006327 polystyrene foam Polymers 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010115 full-mold casting Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Casting Devices For Molds (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は、消失模型を使用した鋳造方法に関し、更に詳
しくいえば、ガス欠陥や鋳はだ欠陥を防止すると共に鋳
込砂の劣化を防止し再利用を可能とする鋳造方法に関す
る。Description: TECHNICAL FIELD The present invention relates to a casting method using a vanishing model, and more specifically, it prevents gas defects and cast-out defects and prevents deterioration of casting sand. The present invention relates to a casting method that enables reuse.
（従来の技術） 従来、消失模型を使用する鋳造方法、例えばフルモール
ド鋳造方法において、消失模型に対し溶湯を注湯する時
に、鋳型内を酸素の希薄な状態にして実施すると、鋳型
内での燃焼が抑制され熱分解されて発生した液状のモノ
マーが溶湯圧により押し出され、鋳込砂の砂粒間へ吸収
される。これによって消失模型部でのモノマーの燃焼に
よる鋳物のガス欠陥や鋳はだ欠陥は防止される。なお、
このような鋳造方法は、例えば、特開昭62−234639号公
報に開示されている。(Prior Art) Conventionally, in a casting method using a vanishing model, for example, a full-mold casting method, when pouring the molten metal into the vanishing model, if the oxygen is diluted in the mold The liquid monomer generated by the suppression of combustion and thermal decomposition is extruded by the molten metal pressure and absorbed between the sand grains of the casting sand. As a result, gas defects and casting defect defects in the casting due to the burning of the monomer in the disappearance model portion are prevented. In addition,
Such a casting method is disclosed in, for example, Japanese Patent Laid-Open No. 62-234639.
（発明が解決しようとする課題） けれども、モノマーが液状で砂粒間に浸入すると、この
液状のモノマーが気化されずに砂とともに冷却されて凝
固し、回りの砂は所謂おこし菓子状に集結する。鋳込砂
はくり返し再利用されるため、回収砂中にこの集結した
砂が固まりのまま残り鋳込砂の劣化を生じさせる。(Problems to be Solved by the Invention) However, when the monomer is in a liquid state and enters between the sand grains, the liquid monomer is not vaporized and is cooled and solidified with the sand, and the surrounding sand is gathered in a so-called confectionery-like shape. Since the casting sand is reused repeatedly, the collected sand remains as a lump in the recovered sand, causing deterioration of the casting sand.
本発明は、液状のモノマーが砂中に凝固して残ることな
く、砂の集結を防止して、そのまま鋳込砂を再利用する
ことができる鋳造方法を提供することを目的とするもの
である。An object of the present invention is to provide a casting method in which the liquid monomer does not solidify and remain in the sand, the aggregation of the sand is prevented, and the cast sand can be reused as it is. .
（課題を解決するための手段） 上記課題を達成するための本発明の第１の消失模型鋳造
方法は、消失模型を鋳込砂に埋没させて鋳型を形成し該
消失模型に溶湯を注湯するようにした消失模型鋳造方法
において、溶湯の注湯時には鋳枠を蓋体で密閉して鋳型
内の空気を吸引し、注湯後は蓋体を開けるとともに鋳型
内に空気を吸引して酸素を取り入れることを特徴とする
ものである。(Means for Solving the Problem) In the first vanishing model casting method of the present invention for achieving the above-mentioned subject, a vanishing model is buried in casting sand to form a mold, and molten metal is poured into the vanishing model. In the disappearance model casting method, the mold is closed with a lid to suck air in the mold when pouring the molten metal, and after pouring, the lid is opened and air is sucked into the mold to draw oxygen. It is characterized by incorporating.
又、本発明の第２の消失模型鋳造方法は、消失模型を鋳
込砂に埋没させて鋳型を形成し該消失模型に溶湯を注湯
するようにした消失模型鋳造方法において、溶湯の注湯
時には鋳型内の空気を不活性気体と置換し、注湯後は蓋
体を開けるとともに鋳型内に空気を吸引し、又は、鋳型
内に空気又は酸素を送入して酸素を取り入れることを特
徴とするものである。Further, the second disappearance model casting method of the present invention is a disappearance model casting method in which a disappearance model is buried in pouring sand to form a mold and the melt is poured into the disappearance model. Sometimes the air in the mold is replaced with an inert gas, after pouring, the lid is opened and the air is sucked into the mold, or the air or oxygen is fed into the mold to take in oxygen. To do.
又、本発明の第３の消失模型鋳造方法は、発泡性粒子中
に不活性気体を封入した消失模型を鋳込砂に埋没させて
鋳型を形成し、該消失模型に溶湯を注湯し、注湯後、鋳
型内に空気を吸引し、又は、鋳型内に空気又は酸素を送
入して酸素を取り入れることを特徴とするものである。Further, the third vanishing model casting method of the present invention is to form a mold by burying the vanishing model in which an inert gas is enclosed in expandable particles in pouring sand, and pouring molten metal into the vanishing model, After pouring, air is sucked into the mold, or air or oxygen is fed into the mold to take in oxygen.
（作用） 鋳型内を酸素の希薄な状態として、消失模型に溶湯を注
湯すると鋳型内での燃焼が抑制されるため、消失模型は
熱分解して液状のモノマーとなり、溶湯の圧力により鋳
込砂の砂粒間に押し出される。そして注湯後、鋳型内に
酸素を取り入れると鋳型内は酸素がリッチとなり、液状
のモノマーは酸素と接触することによって砂粒間で気化
して燃焼し、砂から除去される。(Function) If the molten metal is poured into the extinction model with oxygen in the mold being diluted, combustion in the mold is suppressed, so the extinction model is thermally decomposed into a liquid monomer, and is cast by the pressure of the molten metal. Extruded between the sand grains. Then, after pouring, when oxygen is introduced into the mold, the oxygen becomes rich in the mold, and the liquid monomer is vaporized and burned between the sand grains by contacting with the oxygen, and is removed from the sand.
（実施例１） 以下、本発明の実施例１を第１図〜第４図に基づいて説
明する。Example 1 Hereinafter, Example 1 of the present invention will be described with reference to FIGS. 1 to 4.
鋳枠１は上部を開口させ、下部には空間室２を設置し、
該空間室２は、外部の図示しない吸引ポンプと連通さ
れ、鋳枠１内を減圧するように形成されている。消失模
型３は発泡樹脂、例えば発泡ポリスチロールで形成さ
れ、模型本体４、湯道堰５、湯道６から成るものであ
る。The flask 1 has an open upper part and a space chamber 2 installed in the lower part.
The space chamber 2 communicates with an external suction pump (not shown), and is formed so as to reduce the pressure inside the flask 1. The vanishing model 3 is formed of foamed resin, for example, polystyrene foam, and is composed of a model body 4, a runner weir 5, and a runner 6.
この消失模型３を鋳枠１内の予め敷かれた床砂上に載置
し、粘結剤を含まない鋳込砂７を充填せしめ、鋳型を形
成する。The vanishing model 3 is placed on the floor sand previously laid in the casting frame 1 and filled with the casting sand 7 containing no binder to form a mold.
次に、該鋳枠１の上部開口を蓋体８、例えば通気性のな
いビニールシートでシールし、図示しない吸引ポンプに
より減圧室２を通じて鋳枠１内の空気を吸引し、鋳枠内
を酸素の希薄な状態とする。Next, the upper opening of the casting flask 1 is sealed with a lid 8, for example, a non-breathable vinyl sheet, and the air inside the casting flask 1 is sucked through the decompression chamber 2 by a suction pump (not shown), and the inside of the casting flask is oxygenated. It is in a dilute state.
そして、消失模型３の湯道６の上端に向けて溶湯９を注
湯すると、溶湯９は湯道６、湯道堰５を通って模型本体
４に注入される。このとき、鋳型内は酸素が希薄な状態
であるため、鋳型砂内での燃焼が抑制され、消失模型３
は熱分解して液状のモノマー10となり、溶湯９の圧力に
よって消失模型部内から鋳込砂７の砂粒間へ押し出さ
れ、これと入れ代わりに消失模型部内には溶湯９が充満
する。Then, when the molten metal 9 is poured toward the upper end of the runner 6 of the vanishing model 3, the molten metal 9 is poured into the model body 4 through the runner 6 and the runner weir 5. At this time, since oxygen is diluted in the mold, combustion in the mold sand is suppressed, and the disappearance model 3
Is thermally decomposed into a liquid monomer 10, which is extruded by the pressure of the molten metal 9 from between the vanishing model portion into the sand grains of the casting sand 7, and in lieu of this, the molten model 9 is filled with the molten metal 9.
次いで、注湯後、上記蓋体８を一気に取外して鋳枠１の
上面を開口させる。すると、開口部より空気が吸い込ま
れ、鋳型内は酸素がリッチとなり、鋳込砂７中に押し出
された液状のモノマー10は高温のため、酸素と接触する
ことによって砂粒間で気化ガスとなって鋳型内の残熱に
より燃焼して鋳込砂７中から排除される。この結果、得
られた鋳物は可燃性ガスの巻き込みによるブローホール
等のガス欠陥がなく、また、鋳物の表面に炭素質の未燃
物質のない美麗な鋳はだのものであった。また、鋳込砂
７は、液状のモノマー10が燃焼により排除され、砂の集
結が無く、そのまま再利用が可能になった。Next, after pouring the molten metal, the lid 8 is removed all at once and the upper surface of the casting frame 1 is opened. Then, air is sucked in from the opening, oxygen becomes rich in the mold, and the liquid monomer 10 extruded into the casting sand 7 is at a high temperature, so when it comes into contact with oxygen, it becomes vaporized gas between the sand grains. The residual heat in the mold burns and removes it from the casting sand 7. As a result, the obtained casting was free from gas defects such as blowholes due to entrainment of combustible gas, and was a beautiful casting with no carbonaceous unburned substances on the surface of the casting. Further, the cast sand 7 was reused as it was because the liquid monomer 10 was removed by combustion and the sand did not aggregate.
なお、本実施例においては、鋳枠１の上部開口を蓋体８
で被覆し、空間室２を通じて空気を吸引して鋳型内を酸
素の希薄な状態としたが、鋳枠１内の空気を窒素ガス、
アルゴンガス等の不活性気体と置換して、酸素の希薄な
状態とすることが可能である。また、不活性気体と置換
して注湯後、蓋体８を取り外すとともに、空間室２、ま
たは鋳枠１の上部など適所から酸素（又は空気）を強制
的に送入しても良い。In the present embodiment, the upper opening of the casting frame 1 is covered with the lid 8.
And air was sucked through the space chamber 2 to make the inside of the mold lean of oxygen.
It is possible to make the oxygen lean by replacing it with an inert gas such as argon gas. Alternatively, after substituting with an inert gas and pouring the molten metal, the lid 8 may be removed and oxygen (or air) may be forcibly fed from a suitable place such as the space chamber 2 or the upper portion of the casting flask 1.
（実施例２） つぎに、第５図〜第７図に基づいて本発明の実施例２を
説明する。(Example 2) Next, Example 2 of the present invention will be described with reference to Figs.
鋳枠１の下部に設置された空間室２は、外部の図示しな
い吸引ポンプと連通され、鋳枠１内を減圧するように形
成されている。消失模型11は発泡樹脂、例えば発泡ポリ
スチロールで形成され、模型本体12、湯道堰13、湯道14
から成る。The space chamber 2 installed in the lower portion of the casting flask 1 is connected to an external suction pump (not shown) to reduce the pressure inside the casting flask 1. The disappearance model 11 is made of foamed resin, for example, polystyrene foam, and has a model body 12, a runner weir 13, and a runner 14.
Consists of.
この消失模型11は、発泡性粒子中に不活性気体、例えば
窒素ガスを封入したものを使用して形成されるものであ
って、例えば、スチロール樹脂の予備発泡工程におい
て、収容室の粒状樹脂を減圧状態とするとともに加熱
し、次いで不活性気体を充填させたのち大気圧に戻し、
発泡性粒子中に不活性気体を封入させるものである。な
お、不活性気体８は、一例として窒素ガスを例示した
が、要は高温下でもモノマーと反応せず、その燃焼を抑
制し得るものであれば良いものであって、酸素を希薄と
した空気や、アルゴンガス、ヘリウムガス等のいわゆる
不活性ガスを使用することができる。The disappearance model 11 is formed by using an expandable particle in which an inert gas, for example, nitrogen gas is filled, and, for example, in the step of pre-expanding the styrene resin, the granular resin in the storage chamber is After heating under reduced pressure and then filling with an inert gas, return to atmospheric pressure,
Inert gas is enclosed in expandable particles. The inert gas 8 is exemplified by nitrogen gas, but the point is that it does not react with the monomer even at a high temperature and can suppress the combustion thereof. Alternatively, a so-called inert gas such as argon gas or helium gas can be used.
そして、このようにして得られた発泡ビーズから成型し
た消失模型11を鋳枠１内の予め敷かれた床砂上に載置
し、粘結剤を含まない鋳込砂７を入れ、加振せしめて、
消失模型11の回りに鋳込砂７を充填せしめ、鋳型を形成
する。Then, the vanishing model 11 molded from the foamed beads obtained in this way is placed on the pre-laid floor sand in the flask 1 and the casting sand 7 containing no binder is put therein and shaken. hand,
The casting sand 7 is filled around the vanishing model 11 to form a mold.
そして、消失模型11の湯道14の上端に向けて溶湯９を注
湯すると、溶湯９は湯道14、湯道堰13を通って模型本体
12に注入される。Then, when the molten metal 9 is poured toward the upper end of the runway 14 of the disappearance model 11, the molten metal 9 passes through the runway 14 and the runway weir 13 and the model body
Injected into 12.
このとき、消失模型11の発泡性粒子中に不活性気体が封
入されているため、溶湯と置換された消失模型部内が酸
素の希薄な状態となり、消失模型11は燃焼を抑制され、
熱分解して液状のモノマー10となり、溶湯９の圧力によ
り周囲の鋳込砂７の砂粒間に押し出される。そして、注
湯後、吸引ポンプを作動させ、空間室２を通じて鋳枠１
内の空気を吸引して鋳型内に酸素を取り入れると、鋳型
内は酸素がリッチな状態となり、液状のモノマー10は酸
素と接触して砂中で気化ガスとなって鋳型の残熱によつ
て燃焼して鋳込砂７中から排除される。この結果、上記
実施例と同様にガス欠陥や鋳はだ欠陥の無い鋳物を得る
ことができるとともに、鋳込砂７はモノマーの凝固によ
る砂の集結が無く、そのまま再利用することができるも
のであった。At this time, since the inert gas is enclosed in the expandable particles of the disappearance model 11, the inside of the disappearance model part replaced with the molten metal becomes a state where oxygen is diluted, and the disappearance model 11 is suppressed from burning.
It is thermally decomposed into a liquid monomer 10 and is extruded between the sand grains of the surrounding casting sand 7 by the pressure of the molten metal 9. Then, after pouring the molten metal, the suction pump is operated and the flask 1 is passed through the space chamber 2.
When the air in the mold is sucked and oxygen is taken into the mold, the oxygen becomes rich in the mold, and the liquid monomer 10 comes into contact with oxygen and becomes vaporized gas in the sand, resulting in residual heat of the mold. It is burned and removed from the casting sand 7. As a result, it is possible to obtain a casting free from gas defects and casting defect defects as in the above-mentioned embodiment, and the casting sand 7 can be reused as it is because the sand is not aggregated by the solidification of the monomer. there were.
なお、本実施例においては、注湯後、吸引ポンプを作動
させて鋳枠１内の空気を吸引し、鋳型内に酸素を取り入
れるようにしたが、別途ブロワーを利用するなどして、
酸素または空気を強制的に送入しても良い。In this embodiment, after pouring, the suction pump was operated to suck the air in the flask 1 to take in oxygen into the mold, but by using a separate blower,
Oxygen or air may be forced in.
（効果） 以上詳述したように、本発明の鋳造方法によれば、消失
模型を鋳込砂に埋没させて鋳型を形成し、次いで鋳型内
を酸素の希薄な状態として、該消失模型に溶湯を注湯
し、その後、鋳型内に酸素を取り入れるようにしたか
ら、注湯時は溶湯と置換される部分での消失模型の燃焼
を抑制し、モノマーを液状のまま鋳型の砂粒間へ排出
し、このことによって、ガス欠陥のない、鋳はだの美麗
な鋳物を製造できると共に、注湯後、鋳型内を酸素のリ
ッチな状態として、モノマーを砂粒中で燃焼させ、この
ことによって、モノマーの凝固による砂の集結を無くし
て鋳込砂の劣化を防止し、そのまま再利用することがで
きるものである。(Effect) As described in detail above, according to the casting method of the present invention, the disappeared model is immersed in the casting sand to form a mold, and then the inside of the mold is made into a state in which oxygen is diluted, and the molten model is melted. Since the oxygen was introduced into the mold after that, the combustion of the vanishing model at the part replaced with the molten metal was suppressed during pouring, and the monomer was discharged as liquid between the sand grains of the mold. , By this, it is possible to produce a beautiful casting with no gas defects, and after pouring, the inside of the mold is rich in oxygen, and the monomer is burned in the sand grains. The sand can be reused as it is by preventing the sand from condensing due to solidification and preventing the deterioration of the cast sand.
第１図〜第７図は本発明の実施例を示し、第１図は実施
例１の注湯前の状態を示す断面図、第２図は同上注湯中
の状態を示す断面図、第３図は同上注湯後の状態を示す
断面図、第４図は同上モノマーの燃焼状態を示す断面
図、第５図は実施例２の注湯前の状態を示す断面図、第
６図は同上注湯中の状態を示す断面図、第７図は同上注
湯後のモノマーの燃焼状態を示す断面図である。 １…鋳枠、２…空間室 ３…消失模型、４…模型本体 ５…湯道堰、６…湯道 ７…鋳込砂、８…蓋体 ９…溶湯、10…モノマー1 to 7 show an embodiment of the present invention, FIG. 1 is a sectional view showing a state before pouring of Example 1, FIG. 2 is a sectional view showing a state during pouring of the same, FIG. FIG. 4 is a sectional view showing a state after pouring the same as above, FIG. 4 is a sectional view showing a combustion state of the same monomer as above, FIG. 5 is a sectional view showing a state before pouring of Example 2, and FIG. FIG. 7 is a cross-sectional view showing a state in hot water, and FIG. 7 is a cross-sectional view showing a combustion state of the monomer after pouring the same. DESCRIPTION OF SYMBOLS 1 ... Casting frame, 2 ... Space room 3 ... Disappearance model, 4 ... Model body 5 ... Runway weir, 6 ... Runway 7 ... Cast sand, 8 ... Lid 9 ... Molten metal, 10 ... Monomer
Claims (3)
し該消失模型に溶湯を注湯するようにした消失模型鋳造
方法において、溶湯の注湯時には鋳枠を蓋体で密閉して
鋳型内の空気を吸引し、注湯後は蓋体を開けるとともに
鋳型内に空気を吸引して酸素を取り入れることを特徴と
する消失模型鋳造方法。1. A vanishing model casting method in which a vanishing model is submerged in pouring sand to form a mold, and molten metal is poured into the vanishing model, and the casting frame is closed with a lid when pouring the molten metal. The method of extinction model casting is characterized in that the air in the mold is sucked, the lid is opened after pouring, and the air is sucked into the mold to take in oxygen.
し該消失模型に溶湯を注湯するようにした消失模型鋳造
方法において、溶湯の注湯時には鋳型内の空気を不活性
気体と置換し、注湯後は蓋体を開けるとともに鋳型内に
空気を吸引し、又は、鋳型内に空気又は酸素を送入して
酸素を取り入れることを特徴とする消失模型鋳造方法。2. A vanishing model casting method in which a vanishing model is buried in pouring sand to form a mold and the molten metal is poured into the vanishing model. In the pouring of the molten metal, the air in the mold is an inert gas. After the pouring, the lid is opened and air is sucked into the mold, or air or oxygen is fed into the mold to take in oxygen, which is a method for casting a lost model.
模型を鋳込砂に埋没させて鋳型を形成し、該消失模型に
溶湯を注湯し、注湯後、鋳型内に空気を吸引し、又は、
鋳型内に空気又は酸素を送入して酸素を取り入れること
を特徴とする消失模型鋳造方法。3. A mold is formed by immersing a vanishing model in which an inert gas is enclosed in expandable particles in pouring sand, pouring molten metal into the vanishing model, and then pouring air into the mold. Aspirate, or
A vanishing model casting method characterized in that air or oxygen is fed into a mold to take in oxygen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63101683A JPH0677786B2 (en) | 1988-04-25 | 1988-04-25 | Vanishing model casting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63101683A JPH0677786B2 (en) | 1988-04-25 | 1988-04-25 | Vanishing model casting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01273645A JPH01273645A (en) | 1989-11-01 |
| JPH0677786B2 true JPH0677786B2 (en) | 1994-10-05 |
Family
ID=14307145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63101683A Expired - Lifetime JPH0677786B2 (en) | 1988-04-25 | 1988-04-25 | Vanishing model casting method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0677786B2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01215435A (en) * | 1988-02-22 | 1989-08-29 | Taiyo Chuki Kk | Method for pouring residue in flask in lost foam pattern casting |
-
1988
- 1988-04-25 JP JP63101683A patent/JPH0677786B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01273645A (en) | 1989-11-01 |
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