JPH0263636A - Manufacture of lost foam pattern - Google Patents
Manufacture of lost foam patternInfo
- Publication number
- JPH0263636A JPH0263636A JP21558988A JP21558988A JPH0263636A JP H0263636 A JPH0263636 A JP H0263636A JP 21558988 A JP21558988 A JP 21558988A JP 21558988 A JP21558988 A JP 21558988A JP H0263636 A JPH0263636 A JP H0263636A
- Authority
- JP
- Japan
- Prior art keywords
- core body
- heat resistant
- core
- heat
- pattern
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 16
- 239000006260 foam Substances 0.000 title abstract 4
- 238000000034 method Methods 0.000 claims abstract description 11
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 9
- 239000000057 synthetic resin Substances 0.000 claims abstract description 9
- 239000003960 organic solvent Substances 0.000 claims abstract description 5
- 238000005266 casting Methods 0.000 claims description 7
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 229920006248 expandable polystyrene Polymers 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims description 3
- 239000002195 soluble material Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 239000003779 heat-resistant material Substances 0.000 claims description 2
- 238000004090 dissolution Methods 0.000 claims 1
- 239000000853 adhesive Substances 0.000 abstract description 12
- 230000001070 adhesive effect Effects 0.000 abstract description 12
- 229920002379 silicone rubber Polymers 0.000 abstract description 4
- 239000004945 silicone rubber Substances 0.000 abstract description 4
- 238000005187 foaming Methods 0.000 abstract description 3
- 239000011324 bead Substances 0.000 abstract description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 abstract 2
- 239000004793 Polystyrene Substances 0.000 abstract 1
- 238000012790 confirmation Methods 0.000 abstract 1
- 229920002223 polystyrene Polymers 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 239000004831 Hot glue Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004927 clay Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 229920006327 polystyrene foam Polymers 0.000 description 1
- 238000005507 spraying Methods 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
この発明は鋳物の鋳造に用いる消失模型の製造方法に関
するものである。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a method for manufacturing a disappearing model used for casting a casting.
従来の技術
従来、鋳物の鋳造用の消失模型の製造の際、たとえば第
１０図に示すような、中空部ａを有する消失模型すを形
成する場合がある。このような場合一般に第１１図に示
すようにいわゆる二つ割−ｃ、ｃに形成し、その各接着
面ｄ、ｄにそれぞれホットメルト接着剤等の接着剤（図
示省略）を塗布して接着し、上記消失模型すを形成する
のである。2. Description of the Related Art Conventionally, when manufacturing a vanishing model for casting a casting, a vanishing model having a hollow portion a as shown in FIG. 10, for example, is sometimes formed. In such cases, as shown in Figure 11, it is generally formed into two halves (c, c), and adhesive such as hot melt adhesive (not shown) is applied to each adhesive surface (d, d) to bond them. Then, the above-mentioned vanishing model is formed.
発明が解決しようとする課題
しかし上記のようにして形成された消失横型すは次のよ
うな欠点を有している。それは消失模型すの内側となる
部分の接着が完全になされでいるか否かの認否が困難で
ある。また接着剤が多ずぎる場合□、又は不足の場合、
それそ゛れ第１２図及び１３図に示すように接着のはみ
出し部ｅ、不足部ｆ等を生じる。この両部ｅ、ｆはそれ
ぞれ突条又は凹条を形成している。そして、このような
消失模型すを用いて鋳物を鋳造すると上記突条又は凹条
は忠実に鋳物製品Ｆに再現されてしまう。又上記二つ割
りＣ，Ｃにホットメルト接着剤等を塗布する場合は手作
業によるため面倒である。この発明はこのような課題を
解決するためけなされたもので、その目的は前記従来例
に述べた欠点をすべて解決することができ、接着剤が完
全に接着されているか否かの認否の必要がなく、又第１
２図、第１３図に示すようなはみ出し部ｅ及び不足部ｆ
等の生じることのない、又手作業の面倒さをなくすこと
のできる消失模型の製造方法を提供することである。Problems to be Solved by the Invention However, the vanishing horizontal mold formed as described above has the following drawbacks. It is difficult to confirm whether or not the inner part of the vanishing model has been completely adhered. Also, if there is too much adhesive, or if there is insufficient adhesive,
As a result, as shown in FIGS. 12 and 13, protruding portions e and insufficient portions f of the adhesive are formed. Both parts e and f form protrusions or grooves, respectively. If a casting is cast using such a vanishing model, the protrusions or grooves will be faithfully reproduced in the cast product F. Further, when applying a hot melt adhesive or the like to the above-mentioned two halves C and C, it is laborious because it is done manually. This invention was made to solve such problems, and its purpose is to solve all the drawbacks mentioned in the conventional example, and to eliminate the need to check whether or not the adhesive is completely bonded. There is no, and the first
The protruding part e and the missing part f as shown in Fig. 2 and Fig. 13
It is an object of the present invention to provide a method for manufacturing a disappearing model that does not cause such problems and eliminates the troublesome manual work.
課題を解決するための手段
上記の目的を達成するこの発明について述べるとそれは
、溶解性を有する材料により中子を形成し、該中子の外
面に耐熱性材料を用いて耐熱層を設けて耐熱中子を形成
し、該耐熱中子の外側に、発泡合成樹脂による模型を鋳
ぐるみ成型し、次に該模型の前記中子を溶解して流出さ
せる消失模型の製造方法である。Means for Solving the Problems The present invention, which achieves the above object, consists of forming a core from a soluble material, and providing a heat-resistant layer on the outer surface of the core using a heat-resistant material. This is a method for manufacturing a vanishing model, in which a core is formed, a model made of foamed synthetic resin is cast and molded on the outside of the heat-resistant core, and then the core of the model is melted and flowed out.
実施例
第１図において、ｌは溶解性を有する材料、−例として
発泡合成樹脂、例えば発泡ポリスチロールにより形成さ
れた中子である。なおこの場合は通常の、消失模型を形
成するようにして、」１記中子１が形成される。通常の
消失模型の製造方法は公知のため説明を省略する。EXAMPLE In FIG. 1, l is a core made of a soluble material, for example a foamed synthetic resin, such as foamed polystyrene. In this case, the core 1 is formed by forming a normal disappearing model. Since the manufacturing method of a normal disappearing model is well known, the explanation thereof will be omitted.
次に第２図に示すように土ｆｄ中子１の外面に耐熱層２
を形成して耐熱中子３が形成される。Next, as shown in Figure 2, a heat-resistant layer 2 is placed on the outer surface of the clay FD core 1
The heat-resistant core 3 is formed by forming.
」二記耐熱層２は一例としてシリコンゴムにより形成さ
れており同層２は一例として、シリコンゴムのエマルシ
ョンを、中′ｆ−１の表面に吹き付け、又は塗布 し、
のち乾燥したものである。2.The heat-resistant layer 2 is made of silicone rubber, for example, and the layer 2 is made by spraying or applying a silicone rubber emulsion onto the surface of the inner layer f-1.
It was later dried.
なお上記耐熱層２もシリコンゴムに限るものではなく、
他の適宜の耐熱層を用いてもよいことは勿論である。次
に上記耐熱中子３は第３図に示すように、消失模型の成
型用金型４中に収容される。５は支持部材を示す。そし
て金型４中に、前記耐熱中子３を埋設するようにし、予
め予備発泡させたポリスチレンビーズを充填する（図示
省略ン。そして金型４に形成した通孔６から、図示しな
いボイラにより蒸気を供給して発泡スチロールを形成さ
せて、模型７を形成する。この場合前記耐熱中子３は鋳
ぐるみ（インサート）成型される。なお本来ならばこの
場合蒸気により前記中子１は二次発泡を起こして変形し
てしまうところであるが、前記耐熱層２によりそれが免
れる。Note that the heat-resistant layer 2 is not limited to silicone rubber.
Of course, other appropriate heat-resistant layers may also be used. Next, as shown in FIG. 3, the heat-resistant core 3 is housed in a mold 4 for forming a disappearing model. 5 indicates a support member. Then, the heat-resistant core 3 is buried in the mold 4, and pre-foamed polystyrene beads are filled in the mold 4 (not shown). is supplied to form polystyrene foam to form the model 7. In this case, the heat-resistant core 3 is molded as an insert. Note that originally, in this case, the core 1 would be subjected to secondary foaming by steam. However, the heat-resistant layer 2 prevents this from happening.
次に第４図に示すように、前記金型４から、耐熱中子３
内蔵の模型７を取り出す。そして耐熱中７−３の耐熱層
２の一部を破り、この部分か゛ら中子Ｉを溶出させる。Next, as shown in FIG. 4, from the mold 4, the heat-resistant core 3
Take out the built-in model 7. Then, a part of the heat-resistant layer 2 of the heat-resistant medium 7-3 is broken, and the core I is eluted from this part.
第５図に示すものはその一方法であり、耐熱層２を破っ
た部分から有機溶剤８、−例としてアセトンを注入し、
中子ｌを溶解させ、第６図に示すように溶出させてしま
う。そして第７図に示ずように前記耐熱層２を剥離して
除去する。The method shown in FIG. 5 is one such method, in which an organic solvent 8, for example acetone, is injected from the broken part of the heat-resistant layer 2.
The core 1 is dissolved and eluted as shown in FIG. Then, as shown in FIG. 7, the heat-resistant layer 2 is peeled off and removed.
こうして第７図に、又第１０図に示すような中空の消失
模型が得られる。In this way, hollow disappearing models as shown in FIG. 7 and FIG. 10 are obtained.
次に第８図に示すものはワックスにより形成された中子
９であり、同中子９中に、中子９の外側から加えられる
エネルギーにより発熱する物質１０が内蔵させられてい
る。そしてそれは−例として誘導加熱により発熱する物
質であり、例として鉄粉が混入されている。この中子９
は、前記第２図、第３図、第４図に示し、かつ説明した
ものと同様な方法によって、耐熱中子を鋳ぐるみ成型し
た模型が形成される。そして前記同様にその耐熱層の一
部を破り、これを第９図に示すように誘導加熱装置ｌｌ
中におかれる。１２は高周波発生装置、１３はコイル、
１４は本体、１５は基台、１６は通−１７を有する支持
板、１８は容器を示す。そしてこの場合前記鉄粉はコイ
ル１３の発生する高周波磁界により起こされるヒステリ
シス損により発熱し、それによりフックスが溶解し、支
持板１６の下側に流下する。次にこの模型７を本体１４
から取り出し、該模型７内に残されている前記耐熱層２
を剥離して除去すると、前記第７図に、又第１図に示す
ような、中空の消失模型が得られる。Next, what is shown in FIG. 8 is a core 9 made of wax, and a substance 10 that generates heat by energy applied from the outside of the core 9 is built into the core 9. And it is - for example, a substance that generates heat by induction heating, and for example contains iron powder. This core 9
A model is formed by casting a heat-resistant core by a method similar to that shown and described in FIGS. 2, 3, and 4. Then, in the same manner as above, a part of the heat-resistant layer is torn, and this is placed in the induction heating device II as shown in FIG.
be placed inside. 12 is a high frequency generator, 13 is a coil,
14 is a main body, 15 is a base, 16 is a support plate having a through hole 17, and 18 is a container. In this case, the iron powder generates heat due to hysteresis loss caused by the high frequency magnetic field generated by the coil 13, thereby melting the hooks and flowing down to the lower side of the support plate 16. Next, this model 7 is attached to the main body 14.
The heat-resistant layer 2 left inside the model 7
When it is peeled off and removed, a hollow disappearing model as shown in FIG. 7 and as shown in FIG. 1 is obtained.
なお上記実施例においては発泡合成樹脂により形成した
中子を有機溶剤により溶解させ、ワックスにより形成し
た中子を外側から与えられるエネルギーにより溶解させ
るように形成したが、これは−例であり、これに限るも
のではなく、それが逆に、即ちそれぞれ互いにおき替え
て形成されても差支えはない。In the above example, the core made of foamed synthetic resin was dissolved by an organic solvent, and the core made of wax was dissolved by energy applied from the outside, but this is just an example. However, the present invention is not limited to this, and there is no problem even if they are formed in reverse, that is, by replacing each other.
発明の効果
この発明は前記のように構成され、溶解性の中子の外面
に耐熱層を設けて耐熱中子を形成し、該耐熱中子の外側
に発泡合成樹脂にょる模型を鋳ぐるみ成型し、次に前記
中子を溶解して流出させることにより、前記従来例に述
べたような二つ割りｃ、ｃを形成せずにすみ、従って前
記従来例の場合のように接着部の接着状況の良否の認否
の必要をなくすことができ、又第１２図、第１３図に示
すような接着剤はみ出し部ｅ及び不足部ｆ等の生じる恐
れをなくすことができき、又接着剤を塗布する手作業の
面倒さをなくすことができる。Effects of the Invention The present invention is constructed as described above, and a heat-resistant core is formed by providing a heat-resistant layer on the outer surface of a soluble core, and a model made of foamed synthetic resin is cast and molded on the outside of the heat-resistant core. Then, by melting and flowing out the core, it is no longer necessary to form the two halves c and c as described in the conventional example, and therefore the adhesion status of the bonded part can be changed as in the conventional example. It is possible to eliminate the need for checking whether the adhesive is good or not, and it is possible to eliminate the possibility of adhesive overflowing parts e and insufficient parts f as shown in Figs. 12 and 13. It can eliminate the hassle of work.
第１図〜第７図はそれぞれこの発明の実施例を示し、そ
れぞれ消失模型の製造の工程を順次に示す図、第８図、
第９図はそれぞれこの発明の他の実施例を示し、それぞ
れ消失模型の製造工程の一部を示す図、第１０図はこの
発明の、及び従来の消失模型の斜視図、第１＋図は従来
の、消失模型の製造の際の一工程を示す図、第１２図及
び第１３図はそれぞれ従来の消失模型製造の際に起こる
欠点を示す図である。
１・・・中子
２・・・耐熱層
３・・・耐熱中子
７・・・模型
８・・・有機溶剤FIGS. 1 to 7 each show an embodiment of the present invention, and FIGS.
9 shows other embodiments of the present invention, each showing a part of the manufacturing process of the vanishing model, FIG. 10 is a perspective view of the vanishing model of the present invention and the conventional vanishing model, and FIG. 1+ is a diagram of the conventional vanishing model. FIG. 12 and FIG. 13 are diagrams showing one step in manufacturing a vanishing model, respectively, and are diagrams showing defects that occur during conventional vanishing model manufacturing. 1... Core 2... Heat-resistant layer 3... Heat-resistant core 7... Model 8... Organic solvent
Claims (1)
外面に耐熱性材料を用いて耐熱層を設けて耐熱中子を形
成し、該耐熱中子の外側に発泡合成樹脂による模型を鋳
ぐるみ形成し、次に該模型中の前記中子を溶解して流出
させることを特徴とする消失模型の製造方法。 ２ 発泡合成樹脂は発泡ポリスチロールである請求項１
記載の消失模型の製造方法。 ３ 中子は発泡合成樹脂である請求項１又は２記載の消
失模型の製造方法。 ４ 溶解は有機溶剤により行なわれる請求項１又２又は
３記載の消失模型の製造方法。 ５ 中子はワックスである請求項１記載の消失模型の製
造方法。 ６ 中子は該中子の外部より与えられるエネルギーによ
り発熱する物質を有するものである請求項１又は２又は
３又は５記載の消失模型の製造方法。 ７ 溶解は誘導加熱により行なわれる請求項１又は２又
は４記載の消失模型の製造方法。[Claims] 1. A core is formed from a soluble material, a heat-resistant layer is provided on the outer surface of the core using a heat-resistant material, and a heat-resistant core is formed. 1. A method for manufacturing a disappearing model, which comprises forming a model made of foamed synthetic resin as a casting, and then melting and flowing out the core in the model. 2. Claim 1, wherein the foamed synthetic resin is foamed polystyrene.
The method for manufacturing the vanishing model described. 3. The method for manufacturing a vanishing model according to claim 1 or 2, wherein the core is made of foamed synthetic resin. 4. The method for producing a vanishing model according to claim 1, 2 or 3, wherein the dissolution is carried out using an organic solvent. 5. The method for producing a disappearing model according to claim 1, wherein the core is wax. 6. The method for manufacturing a vanishing model according to claim 1, 2, 3 or 5, wherein the core has a substance that generates heat by energy applied from outside the core. 7. The method for producing a disappearing model according to claim 1, 2 or 4, wherein the melting is performed by induction heating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21558988A JPH0263636A (en) | 1988-08-30 | 1988-08-30 | Manufacture of lost foam pattern |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21558988A JPH0263636A (en) | 1988-08-30 | 1988-08-30 | Manufacture of lost foam pattern |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0263636A true JPH0263636A (en) | 1990-03-02 |
| JPH0375251B2 JPH0375251B2 (en) | 1991-11-29 |
Family
ID=16674934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21558988A Granted JPH0263636A (en) | 1988-08-30 | 1988-08-30 | Manufacture of lost foam pattern |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0263636A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0721830A3 (en) * | 1995-01-11 | 1997-01-02 | Speedform Gmbh | Apparatus and method for making foamed resin articles |
| JP2008025764A (en) * | 2006-07-24 | 2008-02-07 | Nitta Ind Corp | Thermal expansion polymer wax actuator |
| CN106734912A (en) * | 2015-12-29 | 2017-05-31 | 马鞍山市三峰机械制造有限公司 | A kind of method that lost foam process casts scraper wearing piece |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55154650U (en) * | 1979-04-23 | 1980-11-07 | ||
| JPS55154651U (en) * | 1979-04-23 | 1980-11-07 | ||
| JPS63144841A (en) * | 1986-12-09 | 1988-06-17 | Mitsubishi Metal Corp | Production of ceramics mold for precision casting |
-
1988
- 1988-08-30 JP JP21558988A patent/JPH0263636A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55154650U (en) * | 1979-04-23 | 1980-11-07 | ||
| JPS55154651U (en) * | 1979-04-23 | 1980-11-07 | ||
| JPS63144841A (en) * | 1986-12-09 | 1988-06-17 | Mitsubishi Metal Corp | Production of ceramics mold for precision casting |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0721830A3 (en) * | 1995-01-11 | 1997-01-02 | Speedform Gmbh | Apparatus and method for making foamed resin articles |
| JP2008025764A (en) * | 2006-07-24 | 2008-02-07 | Nitta Ind Corp | Thermal expansion polymer wax actuator |
| CN106734912A (en) * | 2015-12-29 | 2017-05-31 | 马鞍山市三峰机械制造有限公司 | A kind of method that lost foam process casts scraper wearing piece |
| CN106734912B (en) * | 2015-12-29 | 2018-08-28 | 马鞍山市三峰机械制造有限公司 | A kind of method of lost foam process casting scraper wearing piece |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0375251B2 (en) | 1991-11-29 |
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