JPS63112040A - Method for forming casting mold by expendable pattern using microwave heating - Google Patents
Method for forming casting mold by expendable pattern using microwave heatingInfo
- Publication number
- JPS63112040A JPS63112040A JP25577186A JP25577186A JPS63112040A JP S63112040 A JPS63112040 A JP S63112040A JP 25577186 A JP25577186 A JP 25577186A JP 25577186 A JP25577186 A JP 25577186A JP S63112040 A JPS63112040 A JP S63112040A
- Authority
- JP
- Japan
- Prior art keywords
- molding sand
- flask
- pattern
- mold
- microwave heating
- 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.)
- Pending
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims description 8
- 238000005266 casting Methods 0.000 title abstract 4
- 239000003110 molding sand Substances 0.000 claims abstract description 25
- 239000011247 coating layer Substances 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 abstract description 14
- 239000010410 layer Substances 0.000 abstract description 10
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 6
- 239000011248 coating agent Substances 0.000 abstract description 5
- 238000000576 coating method Methods 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 18
- 239000004576 sand Substances 0.000 description 16
- 230000035699 permeability Effects 0.000 description 5
- 239000011230 binding agent Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008034 disappearance Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 241000276425 Xiphophorus maculatus Species 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 239000004794 expanded polystyrene Substances 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 238000001615 p wave Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052845 zircon Inorganic materials 0.000 description 1
- GFQYVLUOOAAOGM-UHFFFAOYSA-N zirconium(iv) silicate Chemical compound [Zr+4].[O-][Si]([O-])([O-])[O-] GFQYVLUOOAAOGM-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、マイクロ波加熱を利用した消失模型による鋳
型造型法に関するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a mold making method using a vanishing model using microwave heating.
従来の技術
第４図に示すように、消失模型１０表面に水溶性の塗型
材２を塗布して後にフラスコ３内に入れ、鋳物砂４を充
填した後にマイクロ波加熱炉５にてマイクロ波を照射し
て消失模型２を消失させると同時に塗膜層６をもった鋳
型７を造型する方法が知られている。第４図において、
７ラスフ３は振動テーブルε上に載置されて鋳物砂４を
均一に充填できるように振動が与えられる。BACKGROUND ART As shown in FIG. 4, a water-soluble coating material 2 is applied to the surface of a vanishing model 10, which is then placed in a flask 3, which is then filled with molding sand 4 and then heated with microwaves in a microwave heating furnace 5. A method is known in which the disappearing model 2 is made to disappear by irradiation and at the same time a mold 7 having a coating layer 6 is formed. In Figure 4,
7 Rasf 3 is placed on a vibration table ε, and vibrations are applied to it so that it can be evenly filled with molding sand 4.
発明が解決しようとする問題点
前述の消失模型１を完全に消失させるためには４００℃
前後の高温まで鋳型温度を上げなげればならず、消失模
型自体はマイクロ波照射によって温度上昇しないので、
フラスコ３を透してマイク−波で鋳物砂４を４００℃前
後の高温まで加熱昇温する必要がある。Problems to be Solved by the Invention In order to completely disappear the above-mentioned disappearing model 1, a temperature of 400°C is required.
The mold temperature must be raised to a high temperature before and after, and the temperature of the disappearing model itself does not rise due to microwave irradiation, so
It is necessary to heat the molding sand 4 to a high temperature of around 400° C. using a microphone wave through the flask 3.
このために、鋳物砂４が充填されるフラスコ３の材質は
マイクロ波の透過性が良く、しかも耐熱性のもの、例え
ば高価なセラミックを使用せねばならず、プラス：２３
のコストが高いものとなる。For this reason, the material of the flask 3 filled with the foundry sand 4 must be one that has good microwave permeability and is heat resistant, such as expensive ceramic, plus: 23
The cost will be high.
そこで、本発明はマイクロ波の透過性が良ければ耐熱性
があまりない材質より成るフラスコを使用して鋳型造型
できるようにしたマイクｐ波加熱を利用した消失模型に
よる鋳型造型法を提供することを目的とする。Therefore, the present invention aims to provide a mold making method using a vanishing model using microphone p-wave heating, which enables mold making using a flask made of a material that has good microwave penetration but is not very heat resistant. purpose.
問題点を解決するための手段及び作用
消失模型の表面に塗型層を介して鋳物砂を層状に付着さ
せた後に、この消失模型をマイクロ波加熱して鋳物砂を
硬化させると同時に消失模型を消失させて鋳型を造型す
る方法であり、これによりフラスコがあまり高温となら
ないと共に、鋳型となる鋳物砂の層を薄くできるように
したものである。Means and Effects for Solving Problems After attaching molding sand to the surface of the vanishing model in a layer through a coating layer, the vanishing model is heated with microwaves to harden the foundry sand and at the same time, the vanishing model is This is a method of making a mold by causing the sand to disappear.This method prevents the flask from becoming too hot and allows the layer of foundry sand that will become the mold to be thin.
実施例
（第１実施例）
第１図に示すように、所定の温度で消失する゛ 材料
、例えば発泡ポリスチレンより所定の形状の消失模型１
０を作製し、その表面に無機粘結剤配合水溶性塗型材１
１を塗布する。Example (First Example) As shown in Fig. 1, a disappearing model 1 in a prescribed shape is made of a material that disappears at a prescribed temperature, for example, expanded polystyrene.
0, and coated the surface with water-soluble coating material 1 containing an inorganic binder.
Apply 1.
振動テーブル１２上に載置したフラスコ１３中に消失模
型１０をセットして鋳物砂１４を振動を与えながら充填
する。The vanishing model 10 is set in a flask 13 placed on a vibrating table 12, and molding sand 14 is filled while being vibrated.
この後直ちに消失模型１０を取り出す。この消失模型１
００表面に塗型材１１中の水分の凝集作用で塗型層１５
の上に鋳物砂１４が層状に付着している。Immediately after this, the disappearing model 10 is taken out. This disappearance model 1
A coating layer 15 is formed on the surface of 00 due to the agglomeration of water in the coating material 11.
A layer of molding sand 14 is adhered on top of the molding sand.
樹脂製のフラスコＩ６の中に発泡アルミナ１７を敷き、
前述の消失模型１０を置いて回りに発泡アルミナ１７を
充填する。Place foamed alumina 17 in a resin flask I6,
The aforementioned vanishing model 10 is placed and the surrounding area is filled with foamed alumina 17.
このものをマイクロ波加熱炉１ｇ内に封入してマイクロ
波加熱し鋳物砂１４を硬化させると同時に消失模型１０
を消失させて塗型層１５を有する鋳型１９とする。This material is sealed in 1 g of microwave heating furnace and heated by microwave to harden the molding sand 14 and at the same time disappear the model 10.
is removed to form a mold 19 having a coating layer 15.
前記鋳物砂１４は生型スクラビング再先砂（１１−ス分
０．３Ｘ） １００部、無機粘結剤３部、水１部の配合
で、５分混線後に１５０℃の熱風で水分を飛ばしたもの
であり、塗型材１１はジルコンフラワー１００部、無機
粘結剤３部、合成糊１部、水４０部の配合であり、マイ
クロ波出力はｇＫＷで５分間照射し、鋳型温度は４５０
℃、フラスコ１６表面温度は６３℃であった。The foundry sand 14 was a mixture of 100 parts of green scrubbing sand (11-s content 0.3X), 3 parts of inorganic binder, and 1 part of water, and after mixing for 5 minutes, the moisture was blown off with hot air at 150°C. The coating material 11 was a mixture of 100 parts of zircon flour, 3 parts of inorganic binder, 1 part of synthetic glue, and 40 parts of water, the microwave output was irradiated for 5 minutes at gKW, and the mold temperature was 450.
°C, and the flask 16 surface temperature was 63 °C.
（第２実施例）
第２図に示すように、第１実施例と同様にフラスコ１３
中に消失模型１０を鋳物砂１４で充填した後にマイクロ
波加熱炉１ｇ内に封入してマイクロ波出力８ＫＷで２分
間照射し、鋳型表面温度を８２℃として鋳物砂を若干硬
化させた後にフラスコ１３を反転して若干硬化した鋳物
砂で覆われた消失模型１０を取り出し、この消失模型１
０を鋳物砂（新砂＝７ラタリーサンド）２０を敷いたフ
ラスコ１６中に入れて回りに同様の鋳物砂２０を充填す
る。(Second Embodiment) As shown in FIG. 2, the flask 13 is similar to the first embodiment.
After filling the vanishing model 10 with molding sand 14, the flask 13 was sealed in a microwave heating furnace of 1 g and irradiated with a microwave output of 8 KW for 2 minutes to set the mold surface temperature to 82° C. and harden the molding sand slightly. is inverted and the vanishing model 10 covered with slightly hardened molding sand is taken out, and this vanishing model 1
0 into a flask 16 lined with foundry sand (new sand = 7 rattery sand) 20, and the same foundry sand 20 is filled around the flask 16.
このものをマイクロ波加熱炉１８内に封入して重力ｇＫ
Ｗのマイクロ波を８分間照射して塗型層１５を有する鋳
型１ｇとする。This material is sealed in the microwave heating furnace 18 and the gravity gK
A mold of 1 g having a coating layer 15 is prepared by irradiating W with microwaves for 8 minutes.
この時の鋳型温度は４４５℃、フラスコ１８０表面温度
は８６℃であった。At this time, the mold temperature was 445°C, and the flask 180 surface temperature was 86°C.
（第３実施例）
第３図に示すように、第２実施例と同様にして表面に若
干硬化した鋳物砂１４を有する消失模型１０を作製し、
この消失模型１０を硬ボード２１上に載置してマイク−
波加熱炉１８内に入れ、出力８ＫＷのマイクロ波を１３
分間照射して塗型層１５を有する鋳型１９とする。(Third Example) As shown in FIG. 3, a vanishing model 10 having slightly hardened molding sand 14 on the surface was prepared in the same manner as in the second example,
This disappearing model 10 is placed on a hard board 21 and a microphone is placed on it.
Place it in a wave heating furnace 18 and heat it with microwaves with an output of 8KW.
A mold 19 having a coated mold layer 15 is obtained by irradiation for a minute.
この時の鋳型温度は４８２℃であった。The mold temperature at this time was 482°C.
以上の各実施例で鋳型した鋳型は鋳物砂の層が第４図に
示す従来のものよりも非常に薄く、溶湯注入後の鋳物砂
落ち性が良いものとなりちまた、第１・第２実施例にお
いては表面に塗型層１５を介して鋳物砂１４が若干層状
に付着した消失模型１０を、マイクロ波透過性の良い耐
火物粒子である発泡アルミナ、プラタリーサンド新砂を
介してフラスコ１６中にセットし、それをマイクロ波加
熱炉１８内で加熱するの１断熱効果を持たせて鋳型への
マイクル波照射効率を向けると同時にフラスコ１８の表
面温度が低温度（６３℃、８６℃）であるからフラスコ
１８の熱による破損を防止でき、フラスコ１８は耐熱性
があまり要求されずにマイクロ波透過性が良い材料であ
れば良い。The molds made in each of the above embodiments have a much thinner layer of foundry sand than the conventional mold shown in FIG. In this case, the vanishing model 10 with a slight layer of molding sand 14 adhered to the surface via the coating layer 15 is placed in the flask 16 via foamed alumina, which is a refractory particle with good microwave permeability, and new platy sand. Set it and heat it in the microwave heating furnace 18 to provide an insulation effect and direct the efficiency of microwave irradiation to the mold, while at the same time keeping the surface temperature of the flask 18 at a low temperature (63°C, 86°C). The flask 18 can be prevented from being damaged by heat, and the flask 18 may be made of a material that does not require much heat resistance and has good microwave transparency.
同様忙鋳物砂１４で消失前型１０を支持するフラスコ１
３は、第１実施例ではマイクロ波加熱されないと共に、
第２．第３実施例では鋳型温度が８２℃と鋳型とする場
合の温度４４５℃に比べて著しく低温度であるから、フ
ラスコ１３０表面温度も低く熱による破損がなくて耐熱
性があまり要求されないので、マイクロ波透過性が良い
材料であれば良い。A flask 1 supporting a pre-disappearance mold 10 with similarly busy molding sand 14
3 is not microwave heated in the first embodiment, and
Second. In the third embodiment, the mold temperature is 82°C, which is significantly lower than the temperature of 445°C when the mold is used, so the surface temperature of the flask 130 is also low and there is no damage due to heat, so heat resistance is not required. Any material may be used as long as it has good wave permeability.
なお、第１・第２実施例におけるマイクロ波透過性の良
い耐火物粒子としては、ケイ砂、アルミナ、ジルコニア
、マグネシア、ムライト等の粒子及び発泡体などが利用
できる。In the first and second embodiments, particles of silica sand, alumina, zirconia, magnesia, mullite, etc., and foams can be used as the refractory particles having good microwave permeability.
発明の効果
鋳型となる鋳物砂を予じめ層状に付層した後に消失模型
をマイクロ波加熱するので、フラスコ耐熱性があまり要
求されずにマイクロ波透過性の良い材料を使用できるか
ら、高価なセラミックを使用せず九安価な樹脂を使用で
きてコストが安くなる。Effects of the invention Since the molding sand that will become the mold is layered in advance and then the vanishing model is heated with microwaves, there is no need for flask heat resistance and materials with good microwave transparency can be used, making it possible to use materials with good microwave permeability. It is possible to use cheaper resin without using ceramics, resulting in lower costs.
また、鋳物砂の層を薄くでき、溶湯注入後の砂落しが容
易となる。Additionally, the layer of foundry sand can be made thinner, making it easier to remove the sand after pouring the molten metal.
第１図〜第３図はそれぞれ異なる本発明の実施例を示す
工程順説明図、第４図は従来例の工程順説明図である。
１０は消失模型、１４は鋳物砂、１５は塗型層。FIGS. 1 to 3 are process order explanatory diagrams showing different embodiments of the present invention, and FIG. 4 is a process order explanatory diagram of a conventional example. 10 is a vanishing model, 14 is foundry sand, and 15 is a coating layer.
Claims (1)
層状に付着させた後に、この消失模型１０をマイクロ波
加熱して鋳物砂１４を硬化させると同時に消失模型１０
を消失させるようにしたことを特徴とするマイクロ波加
熱を利用した消失模型による鋳型造型法。After the molding sand 14 is attached to the surface of the vanishing model 10 in a layered manner via the coating layer 15, the vanishing model 10 is heated with microwaves to harden the molding sand 14, and at the same time, the vanishing model 10
A mold making method using a vanishing model using microwave heating, characterized in that the vanishing model is made to vanish.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25577186A JPS63112040A (en) | 1986-10-29 | 1986-10-29 | Method for forming casting mold by expendable pattern using microwave heating |
| PCT/JP1987/000671 WO1988001918A1 (en) | 1986-09-10 | 1987-09-10 | Method of shaping casting mold using perishable prototype |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25577186A JPS63112040A (en) | 1986-10-29 | 1986-10-29 | Method for forming casting mold by expendable pattern using microwave heating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63112040A true JPS63112040A (en) | 1988-05-17 |
Family
ID=17283392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25577186A Pending JPS63112040A (en) | 1986-09-10 | 1986-10-29 | Method for forming casting mold by expendable pattern using microwave heating |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63112040A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0234246A (en) * | 1988-07-22 | 1990-02-05 | Iwao Tezuka | Flask for forming casting mold for jewellery and method for forming casting mold |
-
1986
- 1986-10-29 JP JP25577186A patent/JPS63112040A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0234246A (en) * | 1988-07-22 | 1990-02-05 | Iwao Tezuka | Flask for forming casting mold for jewellery and method for forming casting mold |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR900001344B1 (en) | Making method for the casting mold | |
| US4919193A (en) | Mold core for investment casting, process for preparing the same and process for preparing mold for investment casting having therewithin said mold core | |
| US2836867A (en) | Process of making mold | |
| KR840007370A (en) | Manufacturing method of ceramic shell mold | |
| US3441078A (en) | Method and apparatus for improving grain structures and soundness of castings | |
| JPS61253143A (en) | Forming method for casting mold | |
| JPH0141422B2 (en) | ||
| CA1057486A (en) | Method of producing glazed ceramic building materials | |
| JPS63112040A (en) | Method for forming casting mold by expendable pattern using microwave heating | |
| JPH04319041A (en) | Cast mold and manufacture therefor | |
| US3114948A (en) | Investment casting apparatus and method | |
| JPS63242439A (en) | Production of mold for investment casting | |
| JPS61137646A (en) | Manufacture of casting mold | |
| JPS6358082B2 (en) | ||
| JPH08332547A (en) | Casting method and mold and its production | |
| JPH02303651A (en) | Method for molding hollow ceramic core | |
| JPS5973146A (en) | Formation of casting mold for precision casting | |
| JPS6363547A (en) | Composition for mold of block molding method | |
| JP3552298B2 (en) | Mold for hot impeller casting | |
| JPH02147146A (en) | Shell sand coat lost foam pattern casting method | |
| JPS60253505A (en) | Manufacture of ceramics product | |
| JPH0339774B2 (en) | ||
| JPS61125804A (en) | Manufacture of mold | |
| JPH10109137A (en) | Solid mold precision casting method | |
| JPS6228044A (en) | Manufacture of casting mold |