JPS5874242A - Water mold coating material for casting mold - Google Patents
Water mold coating material for casting moldInfo
- Publication number
- JPS5874242A JPS5874242A JP17249281A JP17249281A JPS5874242A JP S5874242 A JPS5874242 A JP S5874242A JP 17249281 A JP17249281 A JP 17249281A JP 17249281 A JP17249281 A JP 17249281A JP S5874242 A JPS5874242 A JP S5874242A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- emulsion
- coating material
- water
- casting
- 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
- 239000011248 coating agent Substances 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 9
- 238000005266 casting Methods 0.000 title abstract description 20
- 238000000576 coating method Methods 0.000 title abstract description 7
- 239000000463 material Substances 0.000 title abstract description 5
- 238000001704 evaporation Methods 0.000 claims abstract description 4
- 230000008020 evaporation Effects 0.000 claims abstract description 4
- 239000002960 lipid emulsion Substances 0.000 claims 1
- 239000000839 emulsion Substances 0.000 abstract description 18
- 229920003002 synthetic resin Polymers 0.000 abstract description 5
- 239000000057 synthetic resin Substances 0.000 abstract description 5
- 229920001577 copolymer Polymers 0.000 abstract description 4
- 239000004593 Epoxy Substances 0.000 abstract description 2
- 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
- 238000010304 firing Methods 0.000 abstract 1
- 230000007547 defect Effects 0.000 description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910002804 graphite Inorganic materials 0.000 description 4
- 239000010439 graphite Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000004062 sedimentation Methods 0.000 description 3
- 239000004480 active ingredient Substances 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 230000002925 chemical effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002362 mulch Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C3/00—Selection of compositions for coating the surfaces of moulds, cores, or patterns
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mold Materials And Core Materials (AREA)
- Lubricants (AREA)
- Paints Or Removers (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は鋳型に塗布する為の鋳型用塗型剤をと関し、
特に中型及び小型鋳物用に好適な鋳型用水性塗型剤ζこ
関する。[Detailed Description of the Invention] This invention relates to a mold coating agent for coating a mold,
It particularly relates to a water-based mold coating agent suitable for medium-sized and small-sized castings.
鋳型に溶融した金属を流し込み、所定の形状を有する鋳
物を製造する際に発生しやすい、鋳飢不良、焼付き不良
、差し込み不良等の鋳物欠陥は主として鋳型に起因して
いる。これら不具合は高温度の溶融金属と鋳型表面が直
接接触することによって熱的、化学的な影響を受けるこ
とによって発生する。Casting defects such as casting defects, seizure defects, and insertion defects that tend to occur when molten metal is poured into a mold to produce a casting having a predetermined shape are mainly caused by the mold. These defects occur due to the thermal and chemical effects caused by direct contact between the high-temperature molten metal and the surface of the mold.
そこでこれら不具合を防止する為に鋳型剤を鋳型表面に
とぶ漬け、はけ塗り、スプレート等により塗布す裏方法
が古くより知られている。従来、最も広く知らりている
塗型剤としては、黒鉛系の塗型剤が知られている０これ
は黒鉛、１を砂粉、木炭粉等の基材に粘度、分、糖蜜等
の粘結材を加え溶剤で所定の濃度に調合して得られる。In order to prevent these problems, methods have long been known in which a molding agent is applied to the surface of the mold by dipping, brushing, spraying, or the like. Conventionally, the most widely known coating agent is a graphite-based coating agent. It is obtained by adding a binder and mixing with a solvent to a predetermined concentration.
これら黒鉛系塗型剤は大型の鋳型に対しては水性タイプ
が使用され、中ないし小型の鋳物に対してはアルコール
系の揮発性タイプが使用されている。しかし、このアル
コール系揮発性タイプのものは引火点が低（火災の危険
性を伴うという欠点を有する。As for these graphite-based mold coating agents, water-based types are used for large-sized molds, and alcohol-based volatile types are used for medium to small-sized castings. However, this alcohol-based volatile type has the disadvantage of a low flash point (accompanied by the risk of fire).
また前記水性タイプのものは、沈降偏析しやすく、塗布
前に樗畔等して沈降を防止させたとしても、塗布後、黒
鉛系塗型剤の有効成分である基材の塗布後のバラツキが
多く、中型ないし小型の鋳物用には不向きである。In addition, the water-based type mentioned above is prone to sedimentation and segregation, and even if the sedimentation is prevented by using a mulch before application, there will be variations in the base material, which is the active ingredient of the graphite-based coating agent, after application. In many cases, it is unsuitable for medium to small size castings.
そこでこの発明の目的は、火災の危険性のない、水性で
しかも塗型剤の有効成分を均一に塗布できる鋳型用水性
塗型剤を提供することである。SUMMARY OF THE INVENTION An object of the present invention is to provide a water-based mold coating agent that is water-based and does not pose a risk of fire, and which can uniformly apply the active ingredients of the mold coating agent.
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.
以下、この発明を詳述する。まずこの発明の要部である
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
量部、粘１５００〜ｔ、ｏｏｏ ｃ、ｐ、ｓ、及びｐＨ
６，５〜９．５尚好ましくは外観が乳白色、室温放置１
ケ月以上安定、６０°０放置１週間以上安定であり、且
つホモミキサーテ１０．００Ｏｒ、ｐ、ｍ“でｌθ分間
禮碑してもエマルション粒子が安定であるものである０
これう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
共重合エマルション、エポキシエステルーアクルポリエ
ステル共重合エマルジョン等である。This invention will be explained in detail below. First of all, the synthetic resin emulsion, which is the main part of this invention, is one that is used as a base resin for water-soluble paints, and has an evaporation residue of 40 to 50 parts by weight, a viscosity of 1500 to 1,500 tons, ooo c, p, s, and pH.
6.5 to 9.5 Preferably milky white appearance, left at room temperature 1
It is stable for more than 1 month, stable for more than 1 week when left at 60°0, and the emulsion particles are stable even after being exposed to a homomixture temperature of 10.00 Or, p, m for lθ minutes.Specifics of this synthetic resin emulsion Examples include acrylic-styrene copolymer emulsion, vinyl acetate-ethylene copolymer emulsion, and epoxy ester-acrylic polyester copolymer emulsion.
これらエマルジョンを塗布した鋳型を使用して得られた
鋳物は、鋳肌不良、焼付き不良、差し込み不良等を伴わ
ないことが実験により確認された。It has been confirmed through experiments that castings obtained using molds coated with these emulsions are free of casting surface defects, seizure defects, insertion defects, and the like.
（使用例１）
この鋳型にアクリル−スチレン共重合エマルションをエ
アスプレーガンにて均一に塗型した後、溶融した鋳鉄を
この鋳型に注湯し、鋳込み試験を１０枠行った。その結
果得られた鋳物には鋳造欠陥が全くみられなかった。こ
れに比べ塗型しなかったものは得られた鋳物のｌＯ枠中
、２枠の鋳肌不良があった。(Use Example 1) After uniformly applying an acrylic-styrene copolymer emulsion to this mold using an air spray gun, molten cast iron was poured into this mold, and a casting test was conducted for 10 molds. The resulting casting showed no casting defects. In comparison, two out of the 10 frames of the resulting castings that were not coated had casting surface defects.
（使用例２）
フェノール尿素系の樹脂を粘結剤として得られたパイプ
の継手中子用ホットボックス鋳型を造型し、この鋳型に
酢酸ビニル−アクリルエマルジョンを均一゛“７′−ガ
′にて塗型した。・こ０鋳型を使用して使用例Ｉと同様
にして、鋳込み試験をしたところ、鋳造欠陥は全く観察
されず、これに比べて塗型剤を塗布しなかった鋳型を使
用して得られた鋳物はｌＯ枠中、４枠の鋳肌不良があっ
た。(Use example 2) A hot box mold for a pipe joint core was made using a phenolic urea resin as a binder, and a vinyl acetate-acrylic emulsion was uniformly applied to this mold in a 7'-gauge. When a casting test was carried out in the same manner as in Application Example I using this mold, no casting defects were observed, compared to the mold that was not coated with a coating agent. The castings obtained by this process had poor casting surfaces in 4 out of 10 frames.
以Ｌ、上記各使用例及び上述の記載からも明らかな如く
、この発明の塗型剤眸水性であるので火災の危険性はな
く、水性の合成樹脂エマルジョンであるので非常に均＝
であり、黒鉛系塗型剤の如き沈降偏析する不具合のなく
、長期放置に於ても安定である。従って、塗布時のパラ
ツ算外なく、誰でも公知手法にて均一に塗布できる。
□
一又、エマルジョン粒子が非常に細かく、鋳型への密着
性が強固であり剥離する仁ともない。さらに注湯時°に
はエマルジョンはガスを発生し、塗型剤と溶融金属との
間にガスフィルムを形成し、この溶融金属の鋳型・・の
浸透を防止い鋳物の鋳肌不良を防止する。As is clear from the above usage examples and the above description, the coating agent of this invention is water-soluble, so there is no risk of fire, and since it is a water-based synthetic resin emulsion, it is very evenly coated.
It does not have the problem of sedimentation and segregation unlike graphite-based mold coating agents, and is stable even when left for a long time. Therefore, anyone can uniformly apply the coating using a known method without making any mistakes during coating.
□ First, the emulsion particles are very fine, and the adhesion to the mold is strong and there is no chance of peeling. Furthermore, when pouring, the emulsion generates gas, forming a gas film between the coating agent and the molten metal, which prevents the molten metal from penetrating the mold and prevents casting surface defects. .
従って本発明は実用上、非常に有用な鋳型用水性塗型剤
を提供している。Therefore, the present invention provides a water-based mold coating agent that is extremely useful in practice.
特許出願人 アイシン化工株式会社Patent applicant: Aisin Kako Co., Ltd.
Claims (1)
（！、Ｐ、Ｓ。 ｐＨ６，５〜９．５７７）合成ｍ脂エマルジ日ンからな
る鋳型用水性塗型剤。[Claims] Evaporation residue 40-50% by weight, viscosity 500-1,000
(!, P, S. pH 6.5-9.577) A water-based coating agent for molds consisting of a synthetic fat emulsion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17249281A JPS5874242A (en) | 1981-10-27 | 1981-10-27 | Water mold coating material for casting mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17249281A JPS5874242A (en) | 1981-10-27 | 1981-10-27 | Water mold coating material for casting mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5874242A true JPS5874242A (en) | 1983-05-04 |
Family
ID=15942975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17249281A Pending JPS5874242A (en) | 1981-10-27 | 1981-10-27 | Water mold coating material for casting mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5874242A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5978748A (en) * | 1982-10-27 | 1984-05-07 | Aisin Chem Co Ltd | Consumable casting pattern |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50160125A (en) * | 1974-06-19 | 1975-12-25 | ||
| JPS5342123A (en) * | 1976-09-29 | 1978-04-17 | Nippon Steel Corp | Mould paint for steel ingot casting |
| JPS5415418A (en) * | 1977-07-06 | 1979-02-05 | Nippon Steel Corp | Mold coat for casting steel ingot |
| JPS5530946A (en) * | 1978-08-25 | 1980-03-05 | Seiko Epson Corp | Type wheel and its manufacturing |
-
1981
- 1981-10-27 JP JP17249281A patent/JPS5874242A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50160125A (en) * | 1974-06-19 | 1975-12-25 | ||
| JPS5342123A (en) * | 1976-09-29 | 1978-04-17 | Nippon Steel Corp | Mould paint for steel ingot casting |
| JPS5415418A (en) * | 1977-07-06 | 1979-02-05 | Nippon Steel Corp | Mold coat for casting steel ingot |
| JPS5530946A (en) * | 1978-08-25 | 1980-03-05 | Seiko Epson Corp | Type wheel and its manufacturing |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5978748A (en) * | 1982-10-27 | 1984-05-07 | Aisin Chem Co Ltd | Consumable casting pattern |
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