JPH09216034A - Release agent of metallic mold for casting - Google Patents
Release agent of metallic mold for castingInfo
- Publication number
- JPH09216034A JPH09216034A JP8045384A JP4538496A JPH09216034A JP H09216034 A JPH09216034 A JP H09216034A JP 8045384 A JP8045384 A JP 8045384A JP 4538496 A JP4538496 A JP 4538496A JP H09216034 A JPH09216034 A JP H09216034A
- Authority
- JP
- Japan
- Prior art keywords
- silicone oil
- mold
- casting
- modified silicone
- release agent
- 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
Landscapes
- Mold Materials And Core Materials (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、鋳造用金型離型剤
に関する。更に詳しくは、鋳鉄等の鋳造時に用いられる
鋳造用金型離型剤に関する。TECHNICAL FIELD The present invention relates to a mold releasing agent for casting. More specifically, it relates to a mold release agent for casting used during casting of cast iron or the like.
【０００２】[0002]
【従来の技術】アルミニウムまたはその合金、マグネシ
ウム合金等の鋳造時に用いられる鋳造用金型離型剤とし
て種々のものが知られているが(例えば、特公昭60-5741
1号公報、特公平6-47145号公報、同7-10420号公報)、こ
れらはいずれも溶湯温度が約700℃以下の金属またはそ
の合金の鋳造時に用いられるものであって、溶湯温度が
1500℃前後の鋳鉄等の鋳造時には用いることができな
い。2. Description of the Related Art There are various known mold releasing agents used for casting aluminum or its alloys, magnesium alloys, etc. (for example, Japanese Examined Patent Publication No. 60-5741).
No. 1, Japanese Patent Publication No. 6-47145, No. 7-10420), these are all used when casting a metal or its alloy with a melt temperature of about 700 ° C. or less,
It cannot be used when casting cast iron at around 1500 ℃.
【０００３】また、永久的に鋳造による熱衝撃から金型
を保護することおよび離型性を確保することを目指し
て、セラミックス材の溶射皮膜を金型面に設けることな
ども行われているが、多数回の使用による熱履歴によっ
て生ずる皮膜の割れや剥離は避け難く、従って金型寿命
は十分なものとはいえない。Further, a thermal spray coating of a ceramic material has been provided on the surface of the mold for the purpose of permanently protecting the mold from thermal shock due to casting and ensuring mold releasability. However, cracking and peeling of the coating film caused by heat history due to many uses are inevitable, and therefore the mold life cannot be said to be sufficient.
【０００４】[0004]
【発明が解決しようとする課題】本発明の目的は、溶湯
温度の高い鋳鉄等の鋳造時に用いることができ、金型を
熱衝撃などによる破壊から保護し、かつ離型性をも確保
できる鋳造用金型離型剤を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is casting which can be used during casting of cast iron or the like having a high molten metal temperature, can protect a mold from damage due to thermal shock, and can also secure releasability. It is to provide a mold release agent for use.
【０００５】[0005]
【課題を解決するための手段】かかる本発明の目的は、
融点、軟化点または分解点が約1600℃以上の無機酸化物
および変性シリコーンオイルを含有する鋳造用金型離型
剤によって達成される。SUMMARY OF THE INVENTION The object of the present invention is as follows.
It is achieved by a mold release agent for casting containing an inorganic oxide having a melting point, a softening point or a decomposition point of about 1600 ° C. or higher and a modified silicone oil.
【０００６】[0006]
【発明の実施の形態】融点、軟化点または分解点が約16
00℃以上の無機酸化物としては、例えば平均粒径が約0.
1〜4μm、好ましくは約0.15〜１μm程度の粒状または粉
末状のTiO2、ZrO2(カルシア、イットリア、マグネシア
等を加えて安定化しているものが好ましい)、Al2O3等が
用いられ、これらは母材保護および離型作用を有する断
熱材として用いられる。DETAILED DESCRIPTION OF THE INVENTION The melting point, softening point or decomposition point is about 16
The inorganic oxide having a temperature of 00 ° C or higher has, for example, an average particle size of about 0.
1 to 4 μm, preferably about 0.15 to 1 μm granular or powdered TiO 2 , ZrO 2 (preferably stabilized by adding calcia, yttria, magnesia, etc.), Al 2 O 3, etc. are used, These are used as a heat insulating material having a base material protection and a releasing effect.
【０００７】また、変性シリコーンオイルとしては、ア
ルキル(炭素数2以上)変性、アルキル/アラルキル変性、
フッ素化アルキル変性、ポリオキシアルキレン変性等の
非反応型変性シリコーンオイルあるいはアミノ変性、ア
ミノ/アルコキシ変性、エポキシ変性、アルコール変
性、メルカプト変性、カルボン酸変性等の反応型変性シ
リコーンオイルのいずれをも用いることができ、好まし
くはアミノ/アルコール変性、ポリオキシアルキレン変
性等のシリコーンオイルが用いられる。これらの変性シ
リコーンオイルについては、金型への粘着、硬化による
一時的固定作用や常温での離型剤としての分散安定性な
どの効果がみられる。As the modified silicone oil, alkyl (C2 or more) modification, alkyl / aralkyl modification,
Use any non-reactive type modified silicone oil such as fluorinated alkyl modified or polyoxyalkylene modified or reactive modified silicone oil such as amino modified, amino / alkoxy modified, epoxy modified, alcohol modified, mercapto modified, carboxylic acid modified, etc. It is possible to use a silicone oil such as amino / alcohol-modified or polyoxyalkylene-modified silicone oil. These modified silicone oils have effects such as adhesion to a mold, temporary fixing action by curing, and dispersion stability as a release agent at room temperature.
【０００８】これらの各成分からなる鋳造用金型離型剤
は、無機酸化物による離型効果および断熱効果、離型膜
強度、スプレー塗布性などを勘案してそれらの配合比が
決定されるが、一般には金属酸化物が約5〜20体積%、好
ましくは約7〜12体積%を占めるような体積分率で配合さ
れて用いられる。With respect to the mold releasing agent for casting composed of these components, the compounding ratio thereof is determined in consideration of the releasing effect and heat insulating effect by the inorganic oxide, the releasing film strength, the spray coatability and the like. However, in general, the metal oxide is used by being blended in a volume fraction such that the metal oxide occupies about 5 to 20% by volume, preferably about 7 to 12% by volume.
【０００９】離型剤の金型面への塗布は、約50〜1000cs
t、好ましくは約100〜300cst(25℃)の粘度に調整された
離型剤を、約200〜300℃の金型面にスプレー塗布するこ
とによって行われる。このような離型剤塗布金型を用い
て、溶湯温度が約1500〜1700℃の鋳鉄、クロムモリブデ
ン特殊鋼等の各種特殊鋼の鋳造を行うと、離型膜は鋳造
品と共に金型から剥離する。鋳造製品面に付着している
離型膜は、ブラスト洗浄などにより容易に除去すること
ができる。The mold release agent is applied to the mold surface at about 50 to 1000 cs.
It is carried out by spray-coating a mold releasing agent adjusted to a viscosity of about 100 to 300 cst (25 ° C.) on the mold surface at about 200 to 300 ° C. Using such a mold coated with a mold release agent, when casting various kinds of special steel such as cast iron and chrome molybdenum special steel with a molten metal temperature of about 1500 to 1700 ℃, the mold release film peels from the mold together with the cast product. To do. The release film attached to the surface of the cast product can be easily removed by blast cleaning or the like.
【００１０】[0010]
【発明の効果】本発明に係る離型剤を用いることによ
り、溶湯温度が約1500℃前後の鋳造品の成形が可能とな
るばかりではなく、鋳造用金型の離型性寿命の延長も効
果的に達成される。EFFECTS OF THE INVENTION By using the mold release agent according to the present invention, not only is it possible to mold a cast product having a molten metal temperature of about 1500 ° C., but it is also effective to extend the mold release life of the casting mold. Will be achieved.
【００１１】[0011]
【実施例】次に、実施例について本発明を説明する。Next, the present invention will be described by way of examples.
【００１２】実施例 カルシア安定化ジルコニア(平均粒径1μm)10体積%およ
びアミノ/アルコキシ変性シリコーンオイル(信越シリコ
ーン製品FK-857)90体積%を撹拌混合し、粘度100cst(25
℃)の離型剤を調製し、これを210℃のクロムモリブデン
特殊鋼製金型の金型面にスプレー塗布して、溶湯温度16
00℃の含ニッケル特殊鋼の遠心鋳造を行った。その結
果、金型寿命(鋳造時に製品表面に型割れの転写による
高さ130μmの突起がみられた時点で判断)は500回とな
り、通常150〜380回であるセラミックス溶射皮膜の場合
よりも大幅に改善された。Example 10% by volume of calcia-stabilized zirconia (average particle size 1 μm) and 90% by volume of amino / alkoxy-modified silicone oil (Shin-Etsu Silicone product FK-857) were mixed with stirring to obtain a viscosity of 100 cst (25
(° C) release agent is sprayed onto the mold surface of a 210 ° C chrome molybdenum special steel mold, and the melt temperature is adjusted to 16
Centrifugal casting of nickel-containing special steel at 00 ° C was performed. As a result, the die life (determined when a protrusion with a height of 130 μm was observed on the product surface due to the transfer of die cracks during casting) was 500 times, which is significantly larger than that of the ceramic sprayed coating, which is usually 150 to 380 times. Was improved.
Claims (1)
上の無機酸化物および変性シリコーンオイルを含有して
なる鋳造用金型離型剤。1. A mold release agent for casting comprising an inorganic oxide having a melting point, a softening point or a decomposition point of about 1600 ° C. or higher and a modified silicone oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8045384A JPH09216034A (en) | 1996-02-07 | 1996-02-07 | Release agent of metallic mold for casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8045384A JPH09216034A (en) | 1996-02-07 | 1996-02-07 | Release agent of metallic mold for casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09216034A true JPH09216034A (en) | 1997-08-19 |
Family
ID=12717781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8045384A Pending JPH09216034A (en) | 1996-02-07 | 1996-02-07 | Release agent of metallic mold for casting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09216034A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11254086A (en) * | 1998-03-09 | 1999-09-21 | Acheson Ind Inc | Method and device for preparing mold wall for casting or forming to following casting cycle, atomized element with centrifugal separation and air control and using method for atomizing treatment for atomizing mold wall treating agent without substantially containing solvent |
| WO2009151139A1 (en) * | 2008-06-13 | 2009-12-17 | 新日本製鐵株式会社 | Method of casting iron-based alloy in semi-melted or semi-hardened state and mold for casting |
| CN104959530A (en) * | 2015-06-18 | 2015-10-07 | 和县科嘉阀门铸造有限公司 | Nano titanium dioxide improved pasty demolding agent for valve casting |
-
1996
- 1996-02-07 JP JP8045384A patent/JPH09216034A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11254086A (en) * | 1998-03-09 | 1999-09-21 | Acheson Ind Inc | Method and device for preparing mold wall for casting or forming to following casting cycle, atomized element with centrifugal separation and air control and using method for atomizing treatment for atomizing mold wall treating agent without substantially containing solvent |
| WO2009151139A1 (en) * | 2008-06-13 | 2009-12-17 | 新日本製鐵株式会社 | Method of casting iron-based alloy in semi-melted or semi-hardened state and mold for casting |
| CN102056689A (en) * | 2008-06-13 | 2011-05-11 | 新日本制铁株式会社 | Method of casting iron-based alloy in semi-melted or semi-hardened state and mold for casting |
| US9022093B2 (en) | 2008-06-13 | 2015-05-05 | Nippon Steel & Sumitomo Corporation | Method of casting semi-liquid or semi-solid iron-based alloy and die for casting |
| CN104959530A (en) * | 2015-06-18 | 2015-10-07 | 和县科嘉阀门铸造有限公司 | Nano titanium dioxide improved pasty demolding agent for valve casting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |