【発明の詳細な説明】本発明は、インベストメント法、すなわち、蝋模型をコ
ロイダルシリカとジルコンその他の耐火物粉末などで調
製したスラリーならびにジルコンその他の耐火物粒で被
覆して鋳型を製作する精密鋳造用蝋模型の表面処理方法
に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention is a precision casting method in which a wax model is coated with slurry prepared from colloidal silica, zircon and other refractory powders, and particles of zircon and other refractories to produce a mold. The present invention relates to a method for surface treatment of wax models.
精密鋳造用蝋模型の従来の表面処理方法としては、アセ
トンその他の有機溶剤で洗浄する方法が知られているが
、次のような欠点がある。As a conventional surface treatment method for wax models for precision casting, cleaning with acetone or other organic solvents is known, but it has the following drawbacks.
すなわち、第１に、蝋を溶解する。That is, first, the wax is melted.
その際にたとえば、パータンワックス、ゲートワックス
、ディップシールワックスその他で同一ツリーを構成し
た場合、！１１の種類や材質によっては、まだら状に白
色化した洗浄むらができる。For example, if the same tree is composed of pattern wax, gate wax, dip seal wax, etc. Depending on the type and material of the cleaner, uneven whitening may occur.
この白色化した部分は微視的にみると、やや海綿状をな
し、初層のコーティング作業で加湿液やスラリーからの
シリカ（Ｓ１０２）がその空隙部に浸透して蝋の表面に
、換言すれば、鋳型の内側に不規則なシリカの皮膜を形
成する。Microscopically, this whitened area has a somewhat spongy appearance, and during the first layer coating process, silica (S102) from the humidifying liquid and slurry penetrates into the voids and forms on the surface of the wax. For example, forming an irregular silica film on the inside of the mold.
この皮膜は脱脂すると、蝋とともに流出するものや、流
出の途中で他の部分に付着して残るもの、またそのまま
鋳型の表面に残留するものなどがるり、これらは鋳型へ
の付着力が弱いために、鋳型を焼成すると捲れて突起物
を形成し、溶湯にくるまれてザイグロ欠陥の一部となる
。When this film is degreased, some of it flows out with the wax, some of it sticks to other parts during the flow, and some of it remains on the surface of the mold.These films have a weak adhesion to the mold. When the mold is fired, it curls up to form a protrusion, which is wrapped in the molten metal and becomes part of the Zygro defect.
第２に、蝋を溶解するので、洗浄液の劣化が早く、不経
済である。Second, since the wax is dissolved, the cleaning solution deteriorates quickly and is uneconomical.
第３に、引火性のものが主体であるため、危険である。Third, it is dangerous because it is mainly flammable.
第４に、芳香族特有の匂いがあり、作業環境が悪くなる
。Fourth, there is a smell peculiar to aromatics, which makes the working environment worse.
第５に比較的高価である。Fifth, it is relatively expensive.
一方、蝋は非極性で、比較的極性の強い水性のコロイダ
ルシリカやそれで調製したスラリーには濡れにくく、ま
た接着しにくい性質を有しており、したがって１通常は
蝋模型をアセトンその他の有機溶剤で洗浄して脱脂し、
新たな表面を形成させて、界面活性剤を用いた加湿液や
スラリーで初層のコーティングが施される。On the other hand, wax is non-polar and has properties that make it difficult to wet or adhere to relatively polar water-based colloidal silica or slurries prepared using it. Wash and degrease with
A new surface is formed and a first layer of coating is applied with a surfactant-based humidifying solution or slurry.
しかしながら、このような方法は、蝋模型の洗浄におい
て前記欠点を持つとともに、蝋や界面活性剤の種類によ
っては、蝋と初層の付着力は比較的弱いもので、とくに
初層のコーティングでスタッコしない場合は、乾燥時の
割れや剥離、さらに第２層目以降のコーティング作業時
に加湿液やスラリーの水分によって初層のふくらみや割
れ、剥離などの現象を引き起こしやすい。However, such methods have the aforementioned drawbacks in cleaning wax models, and depending on the type of wax or surfactant, the adhesion between the wax and the first layer is relatively weak, especially when coating the first layer with stucco. Otherwise, phenomena such as cracking and peeling during drying, and furthermore, bulging, cracking, and peeling of the first layer due to moisture in the humidifying liquid or slurry during coating operations for the second and subsequent layers, are likely to occur.
本発明は、精密鋳造用蝋模型を適当な配合比のゴムとエ
マルジョンと界面活性剤とを含む水分散液で表面処理す
ることにより、従来の方法の上記の欠点を巧みに解消す
ることができる精密鋳造用蝋模型の表面処理方法を提供
することを目的とするものでめる。The present invention skillfully overcomes the above-mentioned drawbacks of conventional methods by surface treating a wax model for precision casting with an aqueous dispersion containing rubber, emulsion, and surfactant in an appropriate blending ratio. The purpose of this article is to provide a method for surface treatment of wax models for precision casting.
すなわち、本発明者が種々研究を重ねた結果、多くの水
に溶解するか、もしくは分散する天然または合成樹脂の
中で、天然または合成ゴムを主成分とするエマルジョン
が多種類の蝋によく濡れて、その皮膜は乾燥硬化後に蝋
によく接着して剥離しにくく、また耐水性があることを
見い出した。That is, as a result of various studies conducted by the present inventor, it has been found that among natural or synthetic resins that are soluble or dispersed in many types of water, emulsions containing natural or synthetic rubber as a main component are well wetted by various types of wax. They discovered that the film adheres well to wax after drying and hardening, is difficult to peel off, and is water resistant.
したがって、これらと界面活性剤および水の適量で水分
散液を調製して蝋模型を数秒間浸漬し、液切りして乾燥
すると、蝋模型は極めて薄いやや粘着性の皮膜で比較的
強固に被覆され、さらにこの皮膜はコロイダルシリカそ
の他で調製した加湿液やスラリーによく濡れ、また乾燥
後の初層と強固に接着した。Therefore, if you prepare an aqueous dispersion of these, a surfactant, and an appropriate amount of water, immerse the wax model in it for a few seconds, drain the liquid, and dry it, the wax model will be covered relatively firmly with an extremely thin, slightly sticky film. Furthermore, this film was well wetted by humidifying liquids and slurries prepared with colloidal silica and other materials, and also adhered strongly to the initial layer after drying.
換言すれば、このやや粘着性の皮膜は蝋と初層の中間で
蝋と初層のいずれにもよく接着していて、蝋と初層の付
着力を著るしく向上させ、初層の割れや剥離、さらに第
２層目のコーティング作業で加湿液やスラリーの水分に
よって引き起こされやすい初層のふくらみや割れ、剥離
などの現象を防止することができる。In other words, this slightly sticky film is intermediate between the wax and the first layer and adheres well to both the wax and the first layer, significantly improving the adhesion between the wax and the first layer and preventing cracking of the first layer. Furthermore, it is possible to prevent phenomena such as swelling, cracking, and peeling of the first layer that are likely to be caused by moisture in the humidifying liquid or slurry during the second layer coating process.
そして、表面処理のための水分散液の配合割合いは、最
も好ましい例としては重量比で、ゴムの固形分が０．５
〜１５％のゴムエマルジョンと、界面活性剤が０．０５
〜１０％と、適量の水とからなる。The mixing ratio of the aqueous dispersion for surface treatment is most preferably 0.5 by weight, and the solid content of the rubber is 0.5.
~15% rubber emulsion and 0.05% surfactant
~10% and an appropriate amount of water.
ここで、ゴムの固形分が０．５未満では蝋と初層の付着
力が低下し、また１５％を越えると粘度の増加によって
作業性が悪くなる。Here, if the solid content of the rubber is less than 0.5%, the adhesion between the wax and the first layer will be reduced, and if it exceeds 15%, the viscosity will increase, resulting in poor workability.
また界面活性剤の適量は蝋と界面活性剤の適応性にもよ
るが、上記のように重量比で０．０５〜１０％の範囲が
最も好ましく、０．０５％未満では蝋の濡れかやや悪く
なり、１０係を越えると蝋の付着力が低下してくる。The appropriate amount of surfactant also depends on the compatibility of the wax and surfactant, but as mentioned above, a range of 0.05 to 10% by weight is most preferable, and if it is less than 0.05%, the wax may become wet. When it gets worse and exceeds 10 degrees, the adhesive strength of the wax decreases.
通常のコロイダルシリカ系スラリーに、前記ゴム系エマ
ルジョンの適量を添加すると、スラリーの性質を低下さ
せないで、通常の方法で洗浄した蝋と初層の付着力を向
上し、さらに前記の方法によって表面処理した蝋と初層
の付着力は、よりいっそう向上することも確認した。When an appropriate amount of the rubber emulsion is added to an ordinary colloidal silica slurry, the adhesion between the wax and the initial layer washed by the ordinary method is improved without degrading the properties of the slurry, and the surface is further treated by the above method. It was also confirmed that the adhesion between the wax and the first layer was further improved.
この際のスラリーへの添加量は、蝋への付着力、乾燥し
たコーティング層の強度、作業性その他から、コロイダ
ルシリカ１０００リリアトルに対してゴムを主成分とす
る固形分が０〜１５グラムの範囲で最もよい結果が得ら
れ、これはまたバックアップ用のスラリーに配合するこ
とも、前コーティング層との付着力を向上し、また鋳型
に適度の弾性を与えて鋳型の割れを抑制するのに役立つ
。The amount added to the slurry at this time is determined from the adhesion to the wax, the strength of the dried coating layer, workability, etc., and the solid content mainly composed of rubber is in the range of 0 to 15 grams per 1000 liters of colloidal silica. The best results were obtained with this, and it can also be incorporated into the backup slurry to improve adhesion with the previous coating layer and also provide the mold with appropriate elasticity, helping to prevent mold cracking. .
つぎに、パターンワックスを使用した場合なＡとし、ゲ
ートワックスを使用した場合なりとし、それぞれ行なっ
た実１験例と本発明の実施例とを説明する。Next, a case A in which pattern wax is used and a case A in which gate wax is used will be described, and an experimental example and an example of the present invention conducted respectively will be described.
第１実験例蝋Ａをアセトンで２０秒間洗浄したところ、まだら状の
白色化した洗浄むらを生じた。First Experimental Example When Wax A was washed with acetone for 20 seconds, uneven whitening was observed.
乾燥後、コロイダルシリカ１０００ミリリツトル、ジル
コンフラワー３８００グラム、アニオン系界面活性剤０
．５ミリリツトルからなるスラリーで初層コーティング
をスタッコしないで行ない、室温２２℃。After drying, 1000ml colloidal silica, 3800g zircon flour, 0 anionic surfactant
．． The first coat was made without stucco with a slurry of 5 ml at room temperature 22°C.
湿度５０〜６０％で３時間乾燥して、コーティング層の
剥離試験を行なった。After drying at a humidity of 50 to 60% for 3 hours, a peel test of the coating layer was performed.
その結果、剥離した面積は試験面の９０係と不良であっ
た。As a result, the peeled area was 90 times that of the test surface, which was poor.
第２実験例蝋Ｂを前記第１実験例と同様にして剥離試験を行なった
ところ、１００％剥離した。Second Experimental Example Wax B was subjected to a peeling test in the same manner as in the first experimental example, and 100% peeling was achieved.
本発明の第１実施例蝋Ａを、ゴムを主成分とする固形分５グラムのゴムエマ
ルジョンとアニオン系界面活性剤４ミリリツトルおよび
水９０グラムからなる水分散液に２〜３秒間浸漬し、液
切りして乾燥したところ、極めて薄い無色でやや粘着性
の皮膜で被覆された。First Example of the Invention Wax A was immersed for 2 to 3 seconds in an aqueous dispersion consisting of a rubber emulsion with a solid content of 5 grams mainly composed of rubber, 4 milliliters of an anionic surfactant, and 90 grams of water. When cut and dried, it was coated with a very thin, colorless, slightly sticky film.
そして前記第１実験例と同様にしてコーティングし、剥
離試験をしたところ、蝋と初層の付着力がよく、全く剥
離しなかった。Then, when coating was performed in the same manner as in the first experimental example and a peel test was performed, the adhesion between the wax and the initial layer was good and no peeling occurred at all.
本発明の第２実施例蝋Ｂをアセトンで２０秒間洗浄して乾燥後、コロイダル
シリカ１０００ミリリアトル、ジルコンフラワー３８０
０グラム、アニオン系界面活性剤０．５ミリリツトル、
ゴムを出成分とする固形分４０グラムのゴムエマルジョ
ンからなるスラリーで前記第１実験例と同様にして剥離
試験をしたところ、処理した面積は試験面の５０係でめ
った。Second Example of the Invention Wax B was washed with acetone for 20 seconds and dried, followed by colloidal silica 1000 milliator and zircon flour 380.
0 grams, anionic surfactant 0.5 ml,
When a peeling test was conducted in the same manner as in the first experimental example using a slurry made of a rubber emulsion containing rubber as an ingredient and having a solid content of 40 grams, the treated area was 50 times smaller than the test surface.
本発明の第３実施例蝋Ｂを前記本発明の第１実施例と同様にして剥離試験を
したところ、剥離した面積は試験面の５係と良好でβっ
だ。When the wax B of the third embodiment of the present invention was subjected to a peel test in the same manner as the first embodiment of the present invention, the peeled area was 5 times the test surface, which was good and β.
本発明の第４実施例蝋Ｂを前記本発明の第１実施例と同様にして表面処理し
、前記本発明の第２実施例で述べたスラリーでコーティ
ングして剥離試験をしたところ、全く剥離しなかった。Fourth Example of the Present Invention Wax B was surface-treated in the same manner as in the first example of the present invention, coated with the slurry described in the second example of the present invention, and subjected to a peel test. I didn't.
その他の試験結果前記第２実験例と同様の試料を水に漬けたところ、コー
ティング層が割れたが、前記本発明の第１、第２、第３
、第４実施例と同様の試料は１０分間水に浸漬しても、
割れや剥離がなく、かつ、その他の異状も全く見られな
かった。Other test results When the same sample as in the second experimental example was immersed in water, the coating layer cracked.
, even if the sample similar to the fourth example was immersed in water for 10 minutes,
There was no cracking or peeling, and no other abnormalities were observed.
なお本発明の上記各実施例での界面活性剤は、アニオン
系のものをめげたが、カチオン系およびノニオン系の場
合は、成分的面からみて、ワックスとの濡れ性の面で、
理論的には、アニオン系より僅かに劣る程度で、実用上
には差し支えない。Although anionic surfactants were used as surfactants in the above embodiments of the present invention, cationic and nonionic surfactants have the following properties in terms of composition and wettability with wax:
Theoretically, it is slightly inferior to the anionic type, and there is no problem in practical use.
上述のように１本発明によれば、浸漬液に、ゴムエマル
ジョンと界面活性剤とを含む水分散液を用いるので、ゴ
ムエマルジョンは蝋と初層の付着がよく、また界面活性
剤は蝋への濡れがよく、したがって、蝋模型を有機溶剤
で洗浄する従来の方法に比較して、次の諸効果を奏する
ものである。As described above, according to the present invention, an aqueous dispersion containing a rubber emulsion and a surfactant is used as the immersion liquid, so the rubber emulsion has good adhesion between the wax and the initial layer, and the surfactant has good adhesion to the wax. Therefore, compared to the conventional method of cleaning a wax model with an organic solvent, the method has the following effects.
すなわち、第１に、蝋と初層の付着力が大きく、第２に
、その蝋をほとんど溶解しないので、蝋を白色化するな
どの変質をさ゛せることかないうえ、処理液も汚染され
にくい。That is, firstly, the adhesion between the wax and the first layer is strong, and secondly, the wax is hardly dissolved, so the wax does not undergo any deterioration such as whitening, and the processing liquid is also less likely to be contaminated.
また第３に、処理液が水性液でるるため、引火性がなく
、かつ、匂いが少ないため、作業環境がよいのみでなく
、容器その他を容易に水洗することもできるし、しかも
、総じて廉価である。Thirdly, since the treatment liquid is aqueous, it is not flammable and has little odor, which not only provides a good working environment, but also allows containers and other objects to be easily washed with water, and is generally inexpensive. It is.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1368080AJPS5944140B2 (en) | 1980-02-08 | 1980-02-08 | Surface treatment method for wax models for precision casting |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1368080AJPS5944140B2 (en) | 1980-02-08 | 1980-02-08 | Surface treatment method for wax models for precision casting |
| Publication Number | Publication Date |
|---|---|
| JPS56111546A JPS56111546A (en) | 1981-09-03 |
| JPS5944140B2true JPS5944140B2 (en) | 1984-10-26 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1368080AExpiredJPS5944140B2 (en) | 1980-02-08 | 1980-02-08 | Surface treatment method for wax models for precision casting |
| Country | Link |
|---|---|
| JP (1) | JPS5944140B2 (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7082106B2 (en) | 1993-01-08 | 2006-07-25 | Multi-Tech Systems, Inc. | Computer-based multi-media communications system and method |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2696788C1 (en)* | 2018-10-24 | 2019-08-06 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Комсомольский-на-Амуре государственный университет" (ФГБОУ ВО "КнАГУ") | Cast multilayer shell mold |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7082106B2 (en) | 1993-01-08 | 2006-07-25 | Multi-Tech Systems, Inc. | Computer-based multi-media communications system and method |
| US7082141B2 (en) | 1993-01-08 | 2006-07-25 | Multi-Tech Systems, Inc. | Computer implemented voice over data communication apparatus and method |
| US7092406B2 (en) | 1993-01-08 | 2006-08-15 | Multi-Tech Systems, Inc. | Computer implemented communication apparatus and method |
| US7542555B2 (en) | 1993-01-08 | 2009-06-02 | Multi-Tech Systems, Inc. | Computer-based multifunctional personal communication system with caller ID |
| Publication number | Publication date |
|---|---|
| JPS56111546A (en) | 1981-09-03 |
| Publication | Publication Date | Title |
|---|---|---|
| JP4008509B2 (en) | Organosilicon composition | |
| JP4227999B2 (en) | Method and composition for corrosion protection of metal substrates | |
| US2101472A (en) | Antifreezing means | |
| JPS6044145B2 (en) | Silicate treatment of coated substrate | |
| JPS59164373A (en) | Alkali aqueous paint solution and method | |
| US3080257A (en) | Fill-seal wood finishing method and product | |
| JPS5944140B2 (en) | Surface treatment method for wax models for precision casting | |
| US3928661A (en) | Selective coating of a substrate with poly(arylene sulfide) | |
| US2762732A (en) | Solution for and method of cleaning and coating metallic surfaces | |
| WO2017214781A1 (en) | Chromium-free washing-free coating agent, aluminium material and method for coating treatment of surface thereof | |
| US1896263A (en) | Rubber coated articles and process | |
| WO2019133642A1 (en) | Composition and methods for enhancing the application of materials on an elastomeric article and article thereof | |
| US5165962A (en) | Masking film composition and method of masking an article using same | |
| US1549411A (en) | Material and process for preparing metal for painting | |
| US1980518A (en) | Material for coating metal | |
| US1533326A (en) | Method for removing varnish and paint | |
| JP6566959B2 (en) | Method for removing a substrate with an organic coating | |
| US1348099A (en) | Concrete-hardening | |
| US817608A (en) | Process for decorating wood or other material. | |
| US1651996A (en) | Composition for covering stains on plaster walls | |
| JPS6189263A (en) | Novel coating composition | |
| US1878761A (en) | Process of coating metallic surfaces for prevention of corrosion | |
| CA2137052A1 (en) | Composition for cleaning and polishing surfaces | |
| JP2633334B2 (en) | Modified wood | |
| US783828A (en) | Patent-leather and method of producing same. |