JPS5978748A - Consumable casting pattern - Google Patents
Consumable casting patternInfo
- Publication number
- JPS5978748A JPS5978748A JP18834882A JP18834882A JPS5978748A JP S5978748 A JPS5978748 A JP S5978748A JP 18834882 A JP18834882 A JP 18834882A JP 18834882 A JP18834882 A JP 18834882A JP S5978748 A JPS5978748 A JP S5978748A
- Authority
- JP
- Japan
- Prior art keywords
- casting
- model
- pattern
- consumable
- synthetic resin
- 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
- 238000005266 casting Methods 0.000 title abstract description 28
- 239000000839 emulsion Substances 0.000 claims abstract description 22
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 8
- 239000000057 synthetic resin Substances 0.000 claims abstract description 8
- 239000011248 coating agent Substances 0.000 claims abstract description 3
- 238000000576 coating method Methods 0.000 claims abstract description 3
- 238000001704 evaporation Methods 0.000 claims abstract description 3
- 230000008020 evaporation Effects 0.000 claims abstract description 3
- 239000006260 foam Substances 0.000 claims abstract description 3
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 7
- 229920001577 copolymer Polymers 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 6
- 229920006248 expandable polystyrene Polymers 0.000 abstract description 4
- HDERJYVLTPVNRI-UHFFFAOYSA-N ethene;ethenyl acetate Chemical group C=C.CC(=O)OC=C HDERJYVLTPVNRI-UHFFFAOYSA-N 0.000 abstract description 2
- 229920001038 ethylene copolymer Polymers 0.000 abstract description 2
- 238000009499 grossing Methods 0.000 abstract 1
- 239000004794 expanded polystyrene Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000004088 foaming agent Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 241000123069 Ocyurus chrysurus Species 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920006327 polystyrene foam Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
- B22C7/02—Lost patterns
- B22C7/023—Patterns made from expanded plastic materials
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
Description
【発明の詳細な説明】
この発明はフルモールド法やマグネットモールド法等に
使用する消失模型（以下単に模型という）関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vanishing model (hereinafter simply referred to as a model) used in a full mold method, a magnetic mold method, etc.
従来この種の模型は発泡ポリスチレンにて形成されてい
た。そして鋳物を製造する場合は、予め」配板模型を鋳
物砂又は鉄粒に埋め込み、鋳型を形成さセ、そのまま溶
湯を鋳型に注入する作業がなされる。この際模型（発泡
ポリスチレン）は溶湯によって容易に燃焼気化して消失
する。この模型の利点の一つは木型に比べて約１／６と
安価であり、機械加工性が木材より良好なので木型を作
る工数の１／２〜１／３で模型を作ることができる。Previously, this type of model was made of expanded polystyrene. When manufacturing a casting, a plate model is first embedded in foundry sand or iron grains to form a mold, and then molten metal is poured into the mold. At this time, the model (foamed polystyrene) is easily burned and vaporized by the molten metal and disappears. One of the advantages of this model is that it is about 1/6 cheaper than a wooden mold, and has better machinability than wood, so it can be made in 1/2 to 1/3 of the man-hours required to make a wooden mold. .
したがって鋳物の製作数が１個または数個の場合、特に
有効である。又他の利点として、造型り数も中子を使用
しないし、上型と下型の型合せの作業もないので、他の
従来法の造型より簡単である点を挙げることができる。Therefore, it is particularly effective when the number of castings produced is one or several. Another advantage is that the molding process is simpler than other conventional methods, as no core is used and there is no need to match the upper and lower molds.
また模型は発泡ポリスチレンにて形成されているので、
比重が小さく、大型模型でもクレーン等が不要であり、
極めて取扱いが容易である。現在わが国において模型を
使用して鋳物を製造している鋳物会社は１００社を越え
ており、この他、多蚊の会社が採用を検討している。Also, since the model is made of expanded polystyrene,
It has a low specific gravity and does not require a crane etc. even for large models.
Extremely easy to handle. Currently, there are over 100 foundry companies in Japan that manufacture castings using models, and many other companies are considering adoption.
しかし、発泡ポリスチレンの完全な独立気泡にて形成さ
れている模型の表面がミクロ的に観察すると、波状とな
っている。したがって得られた鋳物表面も波状となり、
美観的に乏しく、顧客の要望を満足しがたい。However, when the surface of a model made of completely closed cells of polystyrene foam is observed microscopically, it appears wavy. Therefore, the surface of the obtained casting also becomes wavy,
It is aesthetically poor and difficult to satisfy customer requests.
そこでこの発明の目的は鋳物の表面の波うちかない、極
めて平滑な表面を有する鋳物を製作することのできる模
型を提供することである。SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a model capable of manufacturing a casting having an extremely smooth surface without waviness on the surface of the casting.
この発明の目的は特許請求の範囲に記載した事項を実施
することによって達成される。The objects of the invention are achieved by carrying out the matters described in the claims.
この発明の要部は模型の表面に合成樹脂エマルジョンを
塗布し、その表面の波状を平滑にした点にある。The main part of this invention is that a synthetic resin emulsion is applied to the surface of the model to smooth out the wavy shape of the surface.
この発明で使用する合成樹脂エマルジョンとは、水溶性
塗料のベースレジンとして使用されているもののうち蒸
発残分４０〜５０重量％、粘度５００〜１．０００ Ｃ
，Ｐ、Ｓ及びＰ）Ｉ ｆｆ、５〜８．５の性状を有する
ものを意図している。尚好ましくは外観が乳白色、室温
放置１ケ月以上安定、６０°Ｃ放置１週間以上安定であ
り、且つホモミキサーで１．００Ｏｒ、ｐ、ｍで１０分
間撹拌してもエマルジョン粒子が安定であるものである
。これら合成樹脂エマルジョンの具体的な例は、アクリ
ル−スチレン共重合エマルジョン、酢酸ビニル−エチレ
ン共重合エマルジョン、エポキシエステル−アクリルス
チレン共重合エマルジョン、エポキシ−アクリルポリエ
ステル共重合エマルジョン等である。The synthetic resin emulsion used in this invention is one that is used as a base resin for water-soluble paints and has an evaporation residue of 40 to 50% by weight and a viscosity of 500 to 1.000 C.
, P, S and P)I ff, which are intended to have properties of 5 to 8.5. Preferably, the emulsion particles have a milky white appearance, are stable for one month or more when left at room temperature, are stable for one week or more when left at 60°C, and are stable even when stirred with a homomixer for 10 minutes at 1.00 Or, p, m. It is. Specific examples of these synthetic resin emulsions include acrylic-styrene copolymer emulsion, vinyl acetate-ethylene copolymer emulsion, epoxy ester-acrylic styrene copolymer emulsion, and epoxy-acrylic polyester copolymer emulsion.
これら合成樹脂エマルジョンを塗布した模型を使用して
得られた鋳物は、表面が極めて羊滑であり、美観を有し
ていることが確認された。It was confirmed that the surfaces of the castings obtained using the models coated with these synthetic resin emulsions were extremely smooth and had a beautiful appearance.
この発明の模型に使用する材料は発泡ポリスチレンであ
り、その成分は約８２％の炭素と約８％の水素にて構成
されており、ベンゼンとエチレンから製造されるスチレ
ンモノマーを重合して作られる。また発泡に際しては、
発泡剤を含浸させて約１２０°Ｃに過熱して発泡させる
。しかし、包装材のような発泡ポリスチレンは粗雑であ
ってセルとセルが完全に密着しておらず、機械加工性が
悪い。The material used for the model of this invention is expanded polystyrene, which is composed of about 82% carbon and about 8% hydrogen, and is made by polymerizing styrene monomer made from benzene and ethylene. . Also, when foaming,
It is impregnated with a foaming agent and heated to about 120°C to foam. However, foamed polystyrene used as a packaging material is rough and the cells are not completely adhered to each other, resulting in poor machinability.
また、むしれやすく、良好な平面が得がたいので、フル
モールド用の発泡ポリスチレンを使用する必要がある。In addition, it is easy to peel off and it is difficult to obtain a good flat surface, so it is necessary to use expanded polystyrene for full molding.
尚好ましくは、発泡ポリスチレンの密度が高いもの程、
溶湯を注入した後その構成する炭素が残 となって発生
しやすいので、密度２０Ｋｇ／ｃｍ以下の模型を使用す
ると好ましい。Preferably, the higher the density of the expanded polystyrene,
It is preferable to use a model with a density of 20 kg/cm or less, since the carbon that makes up the molten metal tends to remain as a residue after pouring the molten metal.
模型に合成樹脂エマルジョンを塗布する際は、周知の塗
布方法がいずれも好ましく適用でき、特に制限を設けな
いが、スプレーガン布等かＩｔ−Ｔましい。塗布膜厚は
、模型の表面の波状が平滑に修正される程度で良く、あ
まり厚膜にするとガス化（こ支障をきたし、好ましくな
い。When applying the synthetic resin emulsion to the model, any well-known application method can be preferably applied, and there are no particular restrictions, but spray gun cloth or It-T is preferred. The thickness of the coating film should be such that the undulations on the surface of the model are smoothed out, and if the film is too thick, gasification may occur, which is not preferable.
また、鋳物製作時に」配板残 の発生がメしく、鋳肌不
良等の不具合を伴う場合は鋳型を若干減圧下に保持して
おくと、これらの不具合は解消される。In addition, if the production of plate residue during casting production is accompanied by problems such as poor casting surfaces, these problems can be resolved by holding the mold under slightly reduced pressure.
（使用例１）
フルモールド法用ポリスチレンに発泡剤を含浸させ、金
型内で１２０℃に過熱してエキゾーストマニホールド用
模型を得た。この模型に茜発残４）３４重量％、粘度的
１１３００．Ｐ、Ｓ 、 Ｐ）！ ７５ 、指触乾繰性
３６分の性状を有するアクリルスチレン共重合エマルジ
ョンをスプレーガンにて均一番こ塗存し、石ψ化させた
。この模型をフルモールド法用模型として使用し、減圧
下で鋳込み試験をｌＯ枠行った。(Use Example 1) Polystyrene for full molding was impregnated with a foaming agent and heated to 120° C. in a mold to obtain a model for an exhaust manifold. This model has madder residue 4) 34% by weight, viscosity 11300. P, S, P)! 75, an acrylic styrene copolymer emulsion having a dryness to the touch of 36 minutes was uniformly applied using a spray gun and petrified. This model was used as a model for the full mold method, and a casting test was conducted in a 1O frame under reduced pressure.
（使用例２）
アクリル−スチレン共重合エマルジョンの粘度を約３０
０１１ Ｃ，Ｐ、Ｓとし、模型の形状を歯車とし、この
模型に上記エマルジョンを浸漬して塗布した以外は使用
例１と同様にして鋳込み試験を１０枠行った。(Usage example 2) The viscosity of the acrylic-styrene copolymer emulsion is approximately 30
011 C, P, and S, and the model was shaped like a gear, and a casting test was conducted in 10 frames in the same manner as in Use Example 1, except that the above emulsion was applied by dipping into the model.
（使用例３）
アクリル−スチレン共重合エマルジョンの粘１＾を約８
００℃ｃ、ｐ、ｓとし、模型にこのエマルジョンをへヶ
塗りした以外は使用例１と同様にして鋳込み試験をｌＯ
枠行った。(Use example 3) The viscosity of the acrylic-styrene copolymer emulsion is approximately 8
The casting test was carried out in the same manner as in Example 1 except that the emulsion was applied to the model at 00°C, p, and s.
I went to the frame.
（使用例４）
使用例１と同じ性状を有するエポキシエステル−アクリ
ルスチレン共重合エマルジョンを使用して、使用例２と
同様にして鋳込み試験を１０枠行った。(Use Example 4) Using an epoxy ester-acrylic styrene copolymer emulsion having the same properties as in Use Example 1, a casting test was conducted in 10 frames in the same manner as in Use Example 2.
（比較使用例）
アクリルスチレン共重合エマルジョンを模型番こ塗在し
なかった以外は使用例２と同様にして鋳込み試験ｌＯ枠
を行った。(Comparative Use Example) A casting test was carried out in the same manner as in Use Example 2 except that the acrylic styrene copolymer emulsion was not coated on the model number.
鋳込み試験の結果、各使用例及び比較例で得られた鋳物
には鋳肌不良、続刊き不良、差し込み不良等の鋳物欠陥
は見られなかった。しかし、比較使用例で得られた鋳物
の表面はいずれも模型表面に対応した波状を有し、鋳物
の商品的価値を著しく損なっていたのに対し、使用例で
得られた鋳物には、このような不具合は全くみられなか
った。As a result of the casting test, no casting defects such as poor casting surface, poor continuous casting, or poor insertion were observed in the castings obtained in each usage example and comparative example. However, the surfaces of the castings obtained in the comparative usage examples all had a wavy pattern corresponding to the model surface, which significantly impaired the commercial value of the castings. No such defects were observed.
したがってこの発明は、鋳物の表面が波状とならない、
極めて平滑な表面を有する鉢物を製作することができる
模型を提供している。Therefore, this invention prevents the surface of the casting from becoming wavy.
To provide a model with which a potted plant having an extremely smooth surface can be manufactured.
特許出願人 アイシン化工株式会社 代表者 栗 本 清 二Patent applicant: Aisin Kako Co., Ltd. Representative: Seiji Kurimoto
Claims (1)
重量％、粘度５００〜１．０００Ｃ、Ｐ 、 Ｓ 、
Ｐ Ｈ６，５〜９．５の合成樹脂エマルジョンを塗／１
１シてなる消失模型。The evaporation residue is 40-50% on the pre-formed styrene foam model.
Weight%, viscosity 500-1.000C, P, S,
Coating synthetic resin emulsion with pH 6.5 to 9.5/1
A disappearing model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18834882A JPS5978748A (en) | 1982-10-27 | 1982-10-27 | Consumable casting pattern |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18834882A JPS5978748A (en) | 1982-10-27 | 1982-10-27 | Consumable casting pattern |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5978748A true JPS5978748A (en) | 1984-05-07 |
Family
ID=16222044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18834882A Pending JPS5978748A (en) | 1982-10-27 | 1982-10-27 | Consumable casting pattern |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5978748A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5685356A (en) * | 1994-07-12 | 1997-11-11 | Gc Corporation | Method of making dental wax pattern |
| DE102004008933B4 (en) * | 2003-02-25 | 2016-10-20 | Dow Global Technologies, Inc. | MODEL MATERIAL COMPOUND, VOLATILE MODEL, COMBINATION OF A VOLATILE MODEL AND A SHAPE SHAPING THE MODEL, AND METHOD FOR PRODUCING A SHAPE SHAPE |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53114728A (en) * | 1977-03-18 | 1978-10-06 | Hitachi Metals Ltd | Model of foaming body for casting and its preparation |
| JPS5874242A (en) * | 1981-10-27 | 1983-05-04 | Aisin Chem Co Ltd | Water mold coating material for casting mold |
-
1982
- 1982-10-27 JP JP18834882A patent/JPS5978748A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53114728A (en) * | 1977-03-18 | 1978-10-06 | Hitachi Metals Ltd | Model of foaming body for casting and its preparation |
| JPS5874242A (en) * | 1981-10-27 | 1983-05-04 | Aisin Chem Co Ltd | Water mold coating material for casting mold |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5685356A (en) * | 1994-07-12 | 1997-11-11 | Gc Corporation | Method of making dental wax pattern |
| DE102004008933B4 (en) * | 2003-02-25 | 2016-10-20 | Dow Global Technologies, Inc. | MODEL MATERIAL COMPOUND, VOLATILE MODEL, COMBINATION OF A VOLATILE MODEL AND A SHAPE SHAPING THE MODEL, AND METHOD FOR PRODUCING A SHAPE SHAPE |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3761554A (en) | Method of making plastic articles with a substantially enveloped core | |
| CN102343758B (en) | Production method of gypsum relief product | |
| US3747663A (en) | Production of moulds | |
| CN108838325A (en) | A kind of method that ultrasonic wave added V method casts municipal manhole cover | |
| US3698929A (en) | Metallizing expanded plastics articles | |
| JPS5978748A (en) | Consumable casting pattern | |
| US2007025A (en) | Molded product and method of producing it | |
| US2183424A (en) | Mold material for casting metals | |
| US2641859A (en) | Method of sculpturing | |
| CN105014012A (en) | A kind of preparation technology of lost foam | |
| US4136140A (en) | Moldable foamed polymer composition and a process therefor | |
| JP2014091323A (en) | Metallic tone coating layer, its metallic tone sheet and decorative sheet, and method of forming metallic tone coating layer | |
| US3573071A (en) | Cemented metal powder and fibers and method of making a composite article therefrom | |
| US1577357A (en) | Method of plating composition bodies | |
| US2678510A (en) | Method of making relief printing plate matrices and article | |
| CN106220887B (en) | Expandable copolymer resin and preparation method thereof | |
| JP3781322B2 (en) | Foamed resin composite molded body and method for producing the same | |
| US1296498A (en) | Psocess of reproducing articles in metal | |
| US2236988A (en) | Cellular concrete | |
| JPH10258336A (en) | Manufacture of coating mold for lost foam pattern | |
| JPS5865610A (en) | Casting molding method for cement group mortar | |
| CN1011493B (en) | Precoated sand for titanium alloy molten film casting and shell making process thereof | |
| JPH03500026A (en) | Fireproof composition for foamable mold casting method and foamable mold coating | |
| JPS63317303A (en) | Manufacture of cement hardened material product with glossy surface | |
| JPS6160239A (en) | Production of casting mold |