JPH02169150A - Metallic mold for casting having polytitano-carboxysilane fiber material-containing coating - Google Patents
Metallic mold for casting having polytitano-carboxysilane fiber material-containing coatingInfo
- Publication number
- JPH02169150A JPH02169150A JP32360788A JP32360788A JPH02169150A JP H02169150 A JPH02169150 A JP H02169150A JP 32360788 A JP32360788 A JP 32360788A JP 32360788 A JP32360788 A JP 32360788A JP H02169150 A JPH02169150 A JP H02169150A
- Authority
- JP
- Japan
- Prior art keywords
- fiber material
- mold
- adhesive
- casting
- metallic mold
- 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
- 239000002657 fibrous material Substances 0.000 title claims abstract description 26
- 238000005266 casting Methods 0.000 title claims abstract description 23
- 239000011248 coating agent Substances 0.000 title claims abstract description 17
- 238000000576 coating method Methods 0.000 title claims abstract description 17
- 239000000853 adhesive Substances 0.000 claims abstract description 27
- 230000001070 adhesive effect Effects 0.000 claims abstract description 27
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 18
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 claims abstract description 10
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910001388 sodium aluminate Inorganic materials 0.000 claims abstract description 10
- 229910001928 zirconium oxide Inorganic materials 0.000 claims abstract description 10
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000000835 fiber Substances 0.000 claims description 14
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 4
- 239000006185 dispersion Substances 0.000 description 5
- 229910000881 Cu alloy Inorganic materials 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 235000019353 potassium silicate Nutrition 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の技術分野１
本発明は、熱衝撃性、離型性、耐久性および耐摩耗性の
優れた鋳造用金型およびその製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention 1] The present invention relates to a casting mold with excellent thermal shock resistance, mold releasability, durability and wear resistance, and a method for manufacturing the same.
［従来技術ｌ
従来、鋳造用金型は、２００〜３００シヨツト毎に市販
の軟塗型剤（セラミックを水ガラスに練込んだもの）に
て塗型をしながら使用される。[Prior Art 1] Conventionally, casting molds are used while being coated with a commercially available soft molding agent (ceramic mixed with water glass) every 200 to 300 shots.
しかし最終的ショツト数は銅合金鋳造用金型の場合、数
千ショットが限界である。これは、金型本体の表面にシ
ランまたは摩耗が生じる為である。従って塗型の煩雑さ
及び耐久性に問題がある。However, the final number of shots for copper alloy casting molds is limited to several thousand shots. This is because silane or abrasion occurs on the surface of the mold body. Therefore, there are problems with the complexity of the coating mold and the durability.
近年、無機系成分を主とする接着剤が研究されている。In recent years, adhesives containing mainly inorganic components have been researched.
例えば、特公昭５０−３３４９１号公報には、微粒状高
純度の酸化ジルコニウムとコロイド珪酸並びにそれらの
合計重量の２〜１０χのアルミン酸ナトリウムからなる
混合物を１０００℃以上で焼成して微粉砕して得られる
ことを特徴とする高耐熱性接着剤組成の製造方法が開示
されている。この方法で製造される接着剤はキユアリン
グ温度が低く、２５０〜３５０℃で１時間のキユアリン
グ時間で充分であると報告されている。For example, Japanese Patent Publication No. 50-33491 discloses that a mixture consisting of finely divided high-purity zirconium oxide, colloidal silicic acid, and sodium aluminate in an amount of 2 to 10x of their total weight is calcined at 1000°C or higher and pulverized. A method for producing a highly heat resistant adhesive composition is disclosed. Adhesives produced by this method have a low curing temperature, and a curing time of 1 hour at 250-350°C is reported to be sufficient.
更に、“化学と工業”、第３９巻、第１号、（１９８６
）第１３８〜１４０頁には、空気中で１２００ ”Ｃの
温度に耐えるポリチタノカルボシラン繊維が開示されて
いる。Furthermore, “Chemistry and Industry”, Volume 39, No. 1, (1986
) pages 138-140 disclose polytitanocarbosilane fibers that withstand temperatures of 1200''C in air.
しかし従来には、上記の高耐熱性無機系接着剤とこのポ
リチタノカルボシラン繊維とを組み合わせ、鋳造用金型
に応用する技術は開発されていない。However, no technology has been developed to date that combines the above-mentioned highly heat-resistant inorganic adhesive and this polytitanocarbosilane fiber and applies it to a casting mold.
［発明の解決しようとする課題ｊ
本発明は、鋳造用金型において上記の接着剤とポリチタ
ノカルボシラン繊維を利用することを鋭意研究して、従
来技術の鋳造用金型に比較して著しく優れた耐摩耗性、
離型性、耐熱衝撃性を持つ鋳造用金型を開発することを
課題としている。[Problems to be Solved by the Invention] The present invention has been made by intensive research into the use of the above-mentioned adhesive and polytitanocarbosilane fibers in a casting mold, and has achieved results in comparison with conventional casting molds. Exceptionally excellent wear resistance,
The objective is to develop a casting mold with good release properties and thermal shock resistance.
［発明の構成）
即ち、本発明者は、無機系接着剤によってポリチタノカ
ルボシラン繊維材料が金型の内面に無機系水性接着剤に
て貼り付けられており、上記無機系接着剤が酸化ジルコ
ニウムおよびシリカを主要成分とし且つアルミン酸ナト
リウムを少量成分とする組成を有し、上記繊維材料の繊
維の太さが８μ１１〜５ ｔｓｖａでありそして該繊維
材料と接着剤塗膜との合計厚が０．５〜１５ｍ＋ｉであ
ることを特徴とする、ポリチタノカルボシラン繊維材料
含有被覆を持つ上記鋳造用金型が上記の課題を解決し得
ることを見出した。[Structure of the Invention] That is, the present inventor has discovered that a polytitanocarbosilane fiber material is attached to the inner surface of a mold using an inorganic aqueous adhesive, and that the inorganic adhesive is oxidized. The fiber material has a composition containing zirconium and silica as main components and sodium aluminate as a minor component, the fiber thickness of the fiber material is 8μ11 to 5 tsva, and the total thickness of the fiber material and adhesive coating is It has been found that the above-mentioned casting mold having a polytitanocarbosilane fiber material-containing coating, characterized in that it is 0.5 to 15 m+i, can solve the above problems.
更に本発明は、ポリチタノカルボシラン繊維材料含有被
覆を持つ上記の鋳造用金型を製造するに当たって、酸化
ジルコニウムおよびシリカを主要成分とし且つアルミン
酸ナトリウムを少量成分とする組成の無機系接着剤を水
に分散または溶解した液を金型内面に塗布し、その上に
ポリチタノカルボシラン繊維材料を微細な状態でまたは
長い単繊維の群としてまたは織物または編み物の状態で
載せて貼り付け、室温から９０゛Ｃの範囲内の温度で水
分を除き、次いで１００〜３５０℃でキユアリング反応
させることを特徴とする、上記ポリチタノカルボシラン
繊維材料被覆を持つ鋳造用金型の製造方法にも関する。Furthermore, the present invention provides an inorganic adhesive having a composition containing zirconium oxide and silica as major components and a minor component of sodium aluminate when manufacturing the above-mentioned casting mold having a coating containing a polytitanocarbosilane fiber material. A solution prepared by dispersing or dissolving in water is applied to the inner surface of the mold, and a polytitanocarbosilane fiber material is placed thereon in a fine state, as a group of long single fibers, or in the form of a woven or knitted material, A method for manufacturing a casting mold having a polytitanocarbosilane fiber material coating as described above, characterized in that moisture is removed at a temperature within the range of room temperature to 90°C, and then a curing reaction is performed at 100 to 350°C. related.
本発明で使用し得る鋳造用金型は一般に用いる鉄製、銅
合金のものである。本発明において金型内面とは、金型
本体の内面だけでなく、場合によっては湯口、上がり、
押し湯等の内面を含めた意味である。Casting molds that can be used in the present invention are generally made of iron or copper alloy. In the present invention, the inner surface of the mold refers to not only the inner surface of the mold body, but also the sprue, riser,
This includes the inside of a hot water bath, etc.
本発明で用いる接着剤は、酸化ジルコニウムおよびシリ
カを主要成分とし且つアルミ酸ナトリウムを少量成分と
する組成を有するものであり、殊に５０〜７０重量％の
酸化ジルコニウム、２５〜３５重量％のシリカおよび残
量のアルミン酸ナトリウムより成る組成を存するものが
有利であることか判っている。この接着剤はキユアリン
グ後に１３００℃の耐熱性を有している。The adhesive used in the present invention has a composition containing zirconium oxide and silica as main components and sodium aluminate as a minor component, particularly 50 to 70% by weight of zirconium oxide and 25 to 35% by weight of silica. It has been found to be advantageous to have a composition consisting of the following: and the balance sodium aluminate. This adhesive has a heat resistance of 1300° C. after curing.
本発明で用いるポリチタノカルボシラン繊維の化学構造
並びに製法及び性質は、上述の“化学と工業”に説明さ
れている。The chemical structure, manufacturing method, and properties of the polytitanocarbosilane fiber used in the present invention are explained in "Chemistry and Industry" above.
この繊維材料の役割は、金型の耐熱性、耐摩耗性および
離型性を改善することである。この繊維材料の繊維は、
使用する金型及び成形体の寸法精度によって相違するが
、８μｍ〜５１の直径を有するものが有利である。しか
し更に太い繊維でも本発明の目的を達成することができ
る。繊維材料の状態は短い繊維でも、長い繊維の状態で
も、織物または編み物の形でもよく、金型内面に均一に
分布させることができればいずれの形でもよい。The role of this fiber material is to improve the heat resistance, wear resistance and mold release properties of the mold. The fibers of this textile material are
It is advantageous to have a diameter of 8 μm to 51 μm, although it differs depending on the mold used and the dimensional accuracy of the molded body. However, even thicker fibers can achieve the objectives of the present invention. The fiber material may be in the form of short fibers, long fibers, woven or knitted material, and may be in any form as long as it can be uniformly distributed on the inner surface of the mold.
本発明で用いる接着剤は、急激な水分の蒸発によって塗
膜に凹凸が生じるので、これを避ける為に空気乾燥また
は９０゛Ｃ程までの温度で２０分〜３時間乾燥させる。The adhesive used in the present invention is dried in air or at a temperature of up to 90° C. for 20 minutes to 3 hours to avoid unevenness in the coating film due to rapid evaporation of water.
キユアリングは、１００〜３５０ ’Ｃ程で２０分〜３
時間行うのが有利である。Cure for 20 minutes at 100-350'C.
It is advantageous to do it for hours.
更に高温では残留水分による塗膜表面へ悪影響があり、
更に低温では充分なキユアリングができない。Furthermore, at high temperatures, residual moisture can have a negative effect on the coating surface.
Furthermore, sufficient curing cannot be achieved at low temperatures.
本発明の鋳造用金型の製造の有利な実施態様を以下に示
す：
最初に、水に分散させた無機系接着剤分散液（５０〜９
５重量％の濃度）を金型の内面、即ち本体内面、湯口、
上がり、押し湯等に１００〜５００μ−１殊に２００〜
４００ ｕｒｎの厚さで塗布し、これに８μｍ〜５１Ｉ
Ｉｌｌの太さの微細なポリチタノカルボシラン繊維材料
を接着剤塗布面に均一な分布で圧定により貼り付けそし
て場合によっては上記と同じ接着剤分散液を繊維材料の
上から吹き付け、室温から９０℃までの温度で１時間以
上乾燥させ、次いで１３０〜３５０ ”Ｃの温度でキユ
アリングする。An advantageous embodiment of the production of the casting mold according to the invention is shown below: First, an inorganic adhesive dispersion (50 to 9
5% by weight) on the inner surface of the mold, i.e. the inner surface of the main body, the sprue,
100~500μ-1, especially 200~
Coat with a thickness of 400 urn, and apply 8μm to 51I on this.
A fine polytitanocarbosilane fiber material with a thickness of Ill is pasted on the adhesive application surface with uniform distribution by pressure, and in some cases, the same adhesive dispersion as above is sprayed onto the fiber material, and the material is heated at room temperature. Dry at a temperature of up to 90°C for at least 1 hour, then cure at a temperature of 130-350''C.
本発明のポリチタノカルボシラン繊維材料含有被覆を持
つ金型は、鋳造に必要とされる耐熱性を充分に有してい
る他に、耐摩耗性に優れ且つ鋳造後に成形体を金型から
取り出す際の離型性も卓越している。更に、軟塗型をせ
ずに１０．ＯＯＯシｇットの成形を実施しても、成形体
の表面状態に異常が生じず、充分に使用に耐える優れた
耐久性を持つものである。The mold having the polytitanocarbosilane fiber material-containing coating of the present invention not only has sufficient heat resistance required for casting, but also has excellent abrasion resistance and allows molding to be removed from the mold after casting. It also has excellent release properties when taken out. Furthermore, 10. Even when OOO shit is molded, no abnormality occurs in the surface condition of the molded product, and it has excellent durability that can be used satisfactorily.
本発明を以下に実施例を用いて更に詳細に説明する： 実崖別」。The present invention will be explained in more detail below using examples: Jitsugabetsu”.
６４．０重量％の酸化ジルコニウム、３１．２重量％の
シリカおよび４．８重量％のアルミン酸ナトリウムより
成る接着剤５０ｇを水１５ｄに分散させる。この分散物
を自動車エンジンのケーシング用銅合金鋳型の金型内面
に３００μ■のウェット塗膜厚で塗布し、室温で１時間
乾燥する。50 g of an adhesive consisting of 64.0% by weight zirconium oxide, 31.2% by weight silica and 4.8% by weight sodium aluminate are dispersed in 15 d of water. This dispersion was applied to the inner surface of a copper alloy mold for the casing of an automobile engine to a wet film thickness of 300 .mu.m and dried at room temperature for 1 hour.
この接着剤塗膜の上に長さ３＋ｍで太さ２０μ−のポリ
チタノカルボシラン（チラノ繊維、製造元：宇部興産株
式会社）微細繊維を均一な分布で付着圧定し、その上に
上記と同じ接着剤液を吹き付ける。その後に８５℃の温
度で１時間乾燥し、次いで１５（１”Ｃのキユアリング
温度で１時間キユアリングする０合計塗膜厚は１．００
０μ曙である。Polytitanocarbosilane (Tyrano Fiber, Manufacturer: Ube Industries, Ltd.) fine fibers with a length of 3+m and a thickness of 20μ- are adhered and pressed in a uniform distribution onto this adhesive coating, and the above-mentioned Spray the same adhesive solution. This is followed by drying at a temperature of 85°C for 1 hour, followed by curing for 1 hour at a curing temperature of 15 (1"C).The total film thickness is 1.00.
It is 0μ dawn.
こうして製造された鋳造用金型を、３５０〜４００℃に
冷却しながら自動車エンジンのケーシングの鋳造に用い
たところ、１０．０００ショット行っても、未だ表面に
変化がなかっく、成形体の表面状態も良好であった。離
型は非常に容易である。When the casting mold manufactured in this way was used to cast an automobile engine casing while being cooled to 350 to 400°C, there was still no change in the surface even after 10,000 shots, and the surface condition of the molded product remained unchanged. was also good. Demoulding is very easy.
１旌透」
実施例１を繰り返す、但し、無機系接着剤水性分散物と
して１７−の水に３８．７重Ｍχの酸化ジルコニウム、
５６．５重量％のシリカおよび４．８重量％のアルミン
酸ナトリウムより成るもの５０ｇを分散させた分散物及
び太さ３０ｔＩｍのチラノ繊維より成る織物を用いる点
だけが相違する。Example 1 is repeated, except that zirconium oxide of 38.7 weight Mx is added to 17- of water as an inorganic adhesive aqueous dispersion.
The only difference is that a dispersion of 50 g of 56.5% by weight silica and 4.8% by weight sodium aluminate is used and a fabric made of tyranno fibers with a thickness of 30 tIm is used.
こうして製造された鋳造用金型を、３５０〜４００℃に
冷却しながら自動車エンジンのケーシングの鋳造に用い
たところ、１０，０００ショット行っても、未だ表面に
変化がなかっく、成形体の表面状態も良好であった。離
型は非常に容易である。When the casting mold produced in this way was used to cast an automobile engine casing while being cooled to 350 to 400°C, there was still no change in the surface even after 10,000 shots, and the surface condition of the molded product remained unchanged. was also good. Demoulding is very easy.
止較旦
ポリチラノカルボシラン繊維材料で被覆していない自動
車エンジンのケーシング用の従来の銅合金製金型につい
て鋳造試験を行う、その際、２００シゴフト毎に市販の
塗型剤（セラミックを水ガラスに練込んだもの）にて塗
型をしながら８．０００ショットを行ったところ、金型
表面に摩耗が生じ、使用できない状態となった。Casting tests are carried out on conventional copper alloy molds for automobile engine casings that are not coated with polytyranocarbosilane fiber material, and every 200 molds are coated with a commercial mold coating (ceramic and water glass). When 8,000 shots were carried out while painting the mold with the mold (kneaded into the mold), abrasion occurred on the surface of the mold and the mold became unusable.
［発明の効果］
本発明の鋳造用金型は、従来の金型と比べて、優れた耐
熱性、耐摩耗性および離型性を有し、塗型を行う煩雑さ
が省略でき、優れた耐久性を示し、産業への貢献は顕著
なものである。[Effects of the Invention] Compared to conventional molds, the casting mold of the present invention has excellent heat resistance, abrasion resistance, and mold releasability, and eliminates the complexity of mold coating. It shows durability and its contribution to industry is remarkable.
Claims (1)
繊維材料が金型の内面に無機系水性接着剤にて貼り付け
られており、上記無機系接着剤が酸化ジルコニウムおよ
びシリカを主要成分とし且つアルミン酸ナトリウムを少
量成分とする組成を有し、上記繊維材料の繊維の太さが
８μｍ〜５ｍｍでありそして該繊維材料と接着剤塗膜と
の合計厚が０．５〜１５ｍｍであることを特徴とする、
ポリチタノカルボキシシラン繊維材料含有被覆を持つ上
記鋳造用金型。 ２）酸化ジルコニウムおよびシリカを主要成分とし且つ
アルミン酸ナトリウムを少量成分とする組成の無機系接
着剤を水に分散または溶解した液を金型内面に塗布し、
その上にポリチタノカルボシラン繊維材料を微細な状態
でまたは長い単繊維の群としてまたは織物または編み物
の状態で載せて貼り付け、室温から９０℃の範囲内の温
度で水分を除き、次いで１００〜３５０℃でキュアリン
グさせることを特徴とする、上記ポリチタノカルボシラ
ン繊維材料被覆を持つ鋳造用金型の製造方法。[Claims] 1) A polytitanocarboxysilane fiber material is attached to the inner surface of the mold using an inorganic water-based adhesive, and the inorganic adhesive binds zirconium oxide and silica. It has a composition containing sodium aluminate as a main component and a minor component, the fiber thickness of the fiber material is 8 μm to 5 mm, and the total thickness of the fiber material and adhesive coating is 0.5 to 15 mm. characterized by
The casting mold described above has a coating containing a polytitanocarboxysilane fiber material. 2) Applying a solution prepared by dispersing or dissolving in water an inorganic adhesive containing zirconium oxide and silica as main components and a small amount of sodium aluminate on the inner surface of the mold,
A polytitanocarbosilane fiber material is applied thereon in fine form or in groups of long filaments or in the form of a woven or knitted material, moisture is removed at a temperature ranging from room temperature to 90°C, and then 100°C A method for producing a casting mold having the polytitanocarbosilane fiber material coating described above, characterized by curing at ~350°C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32360788A JPH0683886B2 (en) | 1988-12-23 | 1988-12-23 | Mold for casting with coating containing polytitanocarbosilane fiber material and method of making same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32360788A JPH0683886B2 (en) | 1988-12-23 | 1988-12-23 | Mold for casting with coating containing polytitanocarbosilane fiber material and method of making same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02169150A true JPH02169150A (en) | 1990-06-29 |
| JPH0683886B2 JPH0683886B2 (en) | 1994-10-26 |
Family
ID=18156605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32360788A Expired - Lifetime JPH0683886B2 (en) | 1988-12-23 | 1988-12-23 | Mold for casting with coating containing polytitanocarbosilane fiber material and method of making same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0683886B2 (en) |
-
1988
- 1988-12-23 JP JP32360788A patent/JPH0683886B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0683886B2 (en) | 1994-10-26 |
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