JPH079074A - Coating agent - Google Patents
Coating agentInfo
- Publication number
- JPH079074A JPH079074A JP17724293A JP17724293A JPH079074A JP H079074 A JPH079074 A JP H079074A JP 17724293 A JP17724293 A JP 17724293A JP 17724293 A JP17724293 A JP 17724293A JP H079074 A JPH079074 A JP H079074A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- alumina powder
- coating agent
- solvent
- org
- 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
Landscapes
- Mold Materials And Core Materials (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、塗型剤に係り、特に、
鋳造における砂型の表面に塗布されるのに好適なものに
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coating agent, and in particular,
It is suitable for being applied to the surface of a sand mold in casting.
【０００２】[0002]
【従来の技術】従来、この種の塗型剤は、例えば、アル
コールにアルミナパウダー（アルミナフラワー、あるい
は銀粉またはアルミ粉と称されることもある。）又は黒
鉛粉末を添加混合して得られたスラリー状の塗型剤が用
いられている。2. Description of the Related Art Heretofore, this type of coating agent has been obtained, for example, by adding alumina powder (sometimes referred to as alumina powder, silver powder or aluminum powder) or graphite powder to alcohol. A slurry type coating agent is used.
【０００３】この塗型剤は、シエルモールド法等で形成
された中子等の表面にはけ塗り等で塗布し、塗型剤が乾
燥した後に、固着されていない余分なアルミナパウダー
が鋳物製品中に混入しないように、エアブローにより表
面を清掃している。This mold coating agent is applied to the surface of a core or the like formed by a shell mold method by brush coating or the like, and after the mold coating agent is dried, excess alumina powder that is not adhered is cast. The surface is cleaned by air blow so that it does not get inside.
【０００４】このような塗型剤の塗布された中子を用い
ると、離型が容易であるとともに、鋳肌の良好な鋳物製
品が得られる。When a core coated with such a mold coating agent is used, it is easy to release the mold, and a cast product having a good casting surface can be obtained.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、上記従
来の塗型剤は、エアブローで表面清掃する際に、固着さ
れていないアルミナパウダーが除去されるだけでなく、
せっかく形成された塗型膜が剥離し、再度、塗型剤を塗
布しなければならないという欠点があった。However, the above conventional coating agent not only removes unfixed alumina powder when cleaning the surface by air blow, but also
There is a drawback that the coating film thus formed is peeled off and the coating agent has to be applied again.
【０００６】そこで、本発明は、上記欠点を解決するた
めになされたものであって、その目的は、固着性がよく
エアブローの表面清掃にも十分に耐え、しかも、剥離に
よって塗りむらの発生しない、所定の塗膜厚さの得られ
る塗型剤を提供することにある。Therefore, the present invention has been made in order to solve the above-mentioned drawbacks, and its purpose is to have good adhesiveness, to sufficiently withstand the surface cleaning of an air blow, and to prevent uneven coating due to peeling. The purpose of the present invention is to provide a mold coating agent having a predetermined coating thickness.
【０００７】[0007]
【課題を解決するための手段】本発明に係る塗型剤は、
上記目的を達成するために、ポリスチレン樹脂を溶解さ
せた有機溶剤中にアルミナパウダー又は黒鉛粉末を含ん
で構成されていることを特徴としている。The coating agent according to the present invention is
In order to achieve the above-mentioned object, it is characterized in that an organic solvent in which a polystyrene resin is dissolved contains alumina powder or graphite powder.
【０００８】ポリエチレン樹脂は、ポリスチレン、ポリ
エチレン又はポリプロピレン樹脂を発泡させた発泡スチ
ロールを用いることができ、梱包などに利用された廃棄
物として大量に発生するものを利用することができる。Polyethylene resin may be polystyrene foam obtained by foaming polystyrene, polyethylene or polypropylene resin, and a large amount of wastes used for packaging may be used.
【０００９】有機溶剤としては、周知のシンナーを用い
ることができる。すなわち、防蝕や着色のための塗料を
うすめるときの、エステル，ベンゼンなどの混合溶剤か
らなるラッカーシンナーを用いることができる。A well-known thinner can be used as the organic solvent. That is, it is possible to use a lacquer thinner composed of a mixed solvent of ester, benzene, etc. when diluting a paint for corrosion prevention or coloring.
【００１０】アルミナパウダーは、従来の鋳造現場で銀
粉と称される粉末をそのまま用いることができ、また黒
鉛粉末も従来と同様のものが使用できる。As the alumina powder, a powder called silver powder in a conventional casting site can be used as it is, and a graphite powder similar to the conventional one can be used.
【００１１】[0011]
【作用】上記構成において、ポリスチレン樹脂は、アル
ミナパウダー又は黒鉛粉末を、中子等の砂型表面にバイ
ンダーとして作用し、強固に付着させる。In the above construction, the polystyrene resin acts as a binder on the surface of the sand mold such as the core to firmly adhere the alumina powder or the graphite powder to it.
【００１２】[0012]
【実施例】ラッカーシンナー２０ｃｃに発泡スチロール
１ｇを溶解させ、その溶解液に常用されているアルミナ
パウダー４ｇを添加して塗型剤を得た。EXAMPLES 1 g of styrofoam was dissolved in 20 cc of lacquer thinner, and 4 g of alumina powder which was commonly used was added to the solution to obtain a mold coating agent.
【００１３】[0013]
【実験例】上述の実施例で得られた塗型剤をシエルモー
ルド法で得られた中子にはけ塗りで塗布し、乾燥後に従
来と同様のエアブローで表面清掃したが、塗型剤の剥離
は認められなかった。[Experimental Example] The mold-releasing agent obtained in the above-mentioned example was applied to the core obtained by the shell mold method by brush coating, and after drying, the surface was cleaned with the same air blow as before. No peeling was observed.
【００１４】また、塗型剤の乾燥後、塗布を繰り返す
と、その繰り返しによって塗型膜が厚くなり、所望の塗
型膜厚を得ることもできた。Further, when the coating was repeated after drying the coating agent, the coating film was thickened by the repetition, and the desired coating film thickness could be obtained.
【００１５】[0015]
【発明の効果】本発明に係る塗型剤は、ポリスチレン樹
脂を溶解させた有機溶剤中にアルミナパウダー又は黒鉛
粉末を含ませたので、ポリスチレン樹脂が粘結剤として
働き、アルミナパウダー等を中子等の砂型表面に強固に
付着させることができる。EFFECTS OF THE INVENTION Since the coating agent according to the present invention contains alumina powder or graphite powder in the organic solvent in which polystyrene resin is dissolved, the polystyrene resin acts as a binder and the alumina powder or the like is used as a core. It can be firmly attached to the sand mold surface such as.
Claims (1)
中にアルミナパウダー又は黒鉛粉末を含んで構成されて
いることを特徴とする塗型剤。1. A mold coating agent comprising an alumina solvent or a graphite powder in an organic solvent in which a polystyrene resin is dissolved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17724293A JP3176767B2 (en) | 1993-06-24 | 1993-06-24 | Coating agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17724293A JP3176767B2 (en) | 1993-06-24 | 1993-06-24 | Coating agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH079074A true JPH079074A (en) | 1995-01-13 |
| JP3176767B2 JP3176767B2 (en) | 2001-06-18 |
Family
ID=16027642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17724293A Expired - Fee Related JP3176767B2 (en) | 1993-06-24 | 1993-06-24 | Coating agent |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3176767B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007020586A1 (en) * | 2007-05-02 | 2008-11-06 | Ashland-Südchemie-Kernfest GmbH | Coating materials for casting molds and cores to avoid reaction gas defects |
-
1993
- 1993-06-24 JP JP17724293A patent/JP3176767B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007020586A1 (en) * | 2007-05-02 | 2008-11-06 | Ashland-Südchemie-Kernfest GmbH | Coating materials for casting molds and cores to avoid reaction gas defects |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3176767B2 (en) | 2001-06-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |